CN103908848B - Dedusting purification method and system - Google Patents
Dedusting purification method and system Download PDFInfo
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- CN103908848B CN103908848B CN201410126278.3A CN201410126278A CN103908848B CN 103908848 B CN103908848 B CN 103908848B CN 201410126278 A CN201410126278 A CN 201410126278A CN 103908848 B CN103908848 B CN 103908848B
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- udst separation
- injection device
- separation gas
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- 238000000034 method Methods 0.000 title claims abstract description 39
- 238000000746 purification Methods 0.000 title claims abstract description 14
- 238000000926 separation method Methods 0.000 claims abstract description 183
- 238000002347 injection Methods 0.000 claims abstract description 117
- 239000007924 injection Substances 0.000 claims abstract description 117
- 238000013461 design Methods 0.000 claims abstract description 24
- 239000007787 solid Substances 0.000 claims abstract description 10
- 239000007789 gas Substances 0.000 claims description 234
- 238000002485 combustion reaction Methods 0.000 claims description 23
- 238000004140 cleaning Methods 0.000 claims description 22
- 239000003507 refrigerant Substances 0.000 claims description 20
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims description 12
- 239000002826 coolant Substances 0.000 claims description 11
- 238000010438 heat treatment Methods 0.000 claims description 11
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 8
- 229910052799 carbon Inorganic materials 0.000 claims description 5
- 239000007788 liquid Substances 0.000 claims description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 4
- 229910002092 carbon dioxide Inorganic materials 0.000 claims description 4
- 239000001569 carbon dioxide Substances 0.000 claims description 4
- 235000011089 carbon dioxide Nutrition 0.000 claims description 4
- 239000000446 fuel Substances 0.000 claims description 4
- 239000011261 inert gas Substances 0.000 claims description 4
- VUZPPFZMUPKLLV-UHFFFAOYSA-N methane;hydrate Chemical compound C.O VUZPPFZMUPKLLV-UHFFFAOYSA-N 0.000 claims description 4
- 229910052757 nitrogen Inorganic materials 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 238000006243 chemical reaction Methods 0.000 description 12
- 239000000428 dust Substances 0.000 description 7
- 238000005259 measurement Methods 0.000 description 6
- 239000006256 anode slurry Substances 0.000 description 5
- 238000001816 cooling Methods 0.000 description 5
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 238000002844 melting Methods 0.000 description 4
- 230000008018 melting Effects 0.000 description 4
- HJTAZXHBEBIQQX-UHFFFAOYSA-N 1,5-bis(chloromethyl)naphthalene Chemical compound C1=CC=C2C(CCl)=CC=CC2=C1CCl HJTAZXHBEBIQQX-UHFFFAOYSA-N 0.000 description 3
- GOLCXWYRSKYTSP-UHFFFAOYSA-N arsenic trioxide Inorganic materials O1[As]2O[As]1O2 GOLCXWYRSKYTSP-UHFFFAOYSA-N 0.000 description 3
- OBSZRRSYVTXPNB-UHFFFAOYSA-N tetraphosphorus Chemical compound P12P3P1P32 OBSZRRSYVTXPNB-UHFFFAOYSA-N 0.000 description 3
- 229910000410 antimony oxide Inorganic materials 0.000 description 2
- 238000009530 blood pressure measurement Methods 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- VTRUBDSFZJNXHI-UHFFFAOYSA-N oxoantimony Chemical compound [Sb]=O VTRUBDSFZJNXHI-UHFFFAOYSA-N 0.000 description 2
- 229910052698 phosphorus Inorganic materials 0.000 description 2
- 239000011574 phosphorus Substances 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 238000007670 refining Methods 0.000 description 2
- 239000006227 byproduct Substances 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 239000003915 liquefied petroleum gas Substances 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000000505 pernicious effect Effects 0.000 description 1
- 238000011112 process operation Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000001698 pyrogenic effect Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000000859 sublimation Methods 0.000 description 1
- 230000001502 supplementing effect Effects 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
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- Filtering Of Dispersed Particles In Gases (AREA)
Abstract
The invention discloses and a kind ofly can treat dedusting purification method and the system that udst separation gas carries out temperature control.Through admission line, the method comprises will be treated that udst separation gas is sent in dedusting purifier and realize gas solid separation, then export the operation of udst separation gas from dedusting purifier through discharge duct, simultaneously to treating that udst separation gas carries out temperature control in admission line, namely when treating to inject temperature-reducing medium in udst separation gas to this when the temperature of udst separation gas exceedes design temperature, when the temperature until udst separation gas injects temperature raising medium lower than treating to this during design temperature in udst separation gas, thus will treat that udst separation gas remains within the scope of design temperature and enter dedusting purifier.The mode of the method employing injection temperature-reducing medium/temperature raising medium is treated udst separation gas and is carried out temperature adjustment, control the heat-exchanger rig of fast response time, not Structure of need complexity, and the temperature can treating udst separation gas regulates on a large scale.
Description
Technical field
The present invention relates to dedusting purification method and dedusting cleaning system.
Background technology
Through admission line, dry gaseous udst separation technique comprises will be treated that udst separation gas is sent in dedusting purifier and realize gas solid separation, then export the operation of udst separation gas from dedusting purifier through discharge duct.The temperature and pressure scope often treating udst separation gas in aforesaid operations has certain requirement.Such as, in high-temperature gas dry method dust process for purifying, when until udst separation gas temperature superelevation, easily damage is brought to dedusting purifier, simultaneously also be unfavorable for high-temperature pipe Component selection and cost control, and when when udst separation gas temperature is too low, the fractions treating in udst separation gas usually can be condensed into again liquid and cause pipeline to pollute and part blocks, therefore, the temperature need treating udst separation gas during the purification of high-temperature gas dry method dust compares strict restriction.Again such as, in flammable explosive gas dry method dust process for purifying, when when udst separation gas pressure is too high, easily there is gas leak in system pipeline element, and when when udst separation gas pressure is too low, easily occur again to leak in outside air, thus cause potential safety hazard.At present, when technological requirement can not be met until the temperature of udst separation gas or pressure, usually udst separation gas enters the passive processing mode of cleaning system to take not allow this part treat, thus the subsequent treatment difficulty both added this part gas, also reduce dedusting purification operating efficiency simultaneously.
Summary of the invention
First technical problem to be solved by this invention is to provide a kind ofly can treat dedusting purification method and the system that udst separation gas carries out temperature control.
Second technical problem to be solved by this invention is to provide a kind ofly can treat the dedusting cleaning system that udst separation gas carries out pressure control.
For solving above-mentioned first technical problem, through admission line, dedusting purification method of the present invention comprises will be treated that udst separation gas is sent in dedusting purifier and realize gas solid separation, then export the operation of udst separation gas from dedusting purifier through discharge duct, simultaneously to treating that udst separation gas carries out temperature control in admission line in aforesaid operations process, namely when treating to inject temperature-reducing medium in udst separation gas to this when the temperature of udst separation gas exceedes design temperature, when the temperature until udst separation gas injects temperature raising medium lower than treating to this during design temperature in udst separation gas, thus will treat that udst separation gas remains within the scope of design temperature and enter dedusting purifier.The mode of the method employing injection temperature-reducing medium/temperature raising medium is treated udst separation gas and is carried out temperature adjustment, control the heat-exchanger rig of fast response time, not Structure of need complexity, and the temperature can treating udst separation gas regulates, extend the scope of application of dedusting process for purifying on a large scale.
As a kind of preferred embodiment to above-mentioned gas dust-removing and purifying method, before and after on described admission line, the first Tube Temperature Sensor and second pipe temperature sensor are set respectively, admission line is connected temperature-reducing medium injection device and temperature raising medium injection device between the first Tube Temperature Sensor with second pipe temperature sensor, if the first Tube Temperature Sensor measuring tempeature is T
1, second pipe temperature sensor measurement temperature is T
2, treat that the minimum allowable temperature of udst separation gas is T
min, treat that the maximum safety temperature of udst separation gas is T
maxif detect T
1< T
mintime temperature raising medium injection device to open and temperature-reducing medium injection device keeps cutting out, when detecting T
2>=T
minrear temperature raising medium injection device cuts out, if detect T
1> T
maxtime temperature-reducing medium injection device to open and temperature raising medium injection device keeps cutting out, when detecting T
2≤ T
maxrear heating and cooling medium injection device cuts out.
As the another kind of preferred embodiment to above-mentioned gas dust-removing and purifying method, before and after on described admission line, the first Tube Temperature Sensor and second pipe temperature sensor are set respectively, admission line is connected temperature-reducing medium injection device and temperature raising medium injection device between the first Tube Temperature Sensor with second pipe temperature sensor, admission line is connected between second pipe temperature sensor with dedusting purifier the input of gas circulation line, on admission line the first Tube Temperature Sensor with treat the output being connected gas circulation line between udst separation source of the gas, gas circulation line is provided with power set and valve, if the first Tube Temperature Sensor measuring tempeature is T
1, second pipe temperature sensor measurement temperature is T
2, treat that the minimum allowable temperature of udst separation gas is T
min, treat that the maximum safety temperature of udst separation gas is T
maxif then detect T
1< T
mintime temperature raising medium injection device to open and temperature-reducing medium injection device keeps cutting out, when detecting T
min≤ T
2≤ T
maxrear temperature raising medium injection device cuts out, and when detecting T
2< T
minor T
2> T
maxin time, cuts off the air supply channel to dedusting purifier and will treat udst separation vapor return by gas circulation line, if detect T
1> T
maxtime temperature-reducing medium injection device to open and temperature raising medium injection device keeps cutting out, when detecting T
min≤ T
2≤ T
maxrear heating and cooling medium injection device cuts out, and when detecting T
2< T
minor T
2> T
maxin time, cuts off the air supply channel to dedusting purifier and will treat udst separation vapor return by gas circulation line.
In above-mentioned gas dust-removing and purifying method, described temperature-reducing medium can adopt inertia refrigerant or at least one in the cooled gas of udst separation; When temperature-reducing medium adopts inertia refrigerant, described inertia refrigerant can be selected from one or more in cryogenic inert gas, liquid nitrogen, dry ice.Described temperature raising medium then can adopt combustion furnace furnace gas, and the burning of this combustion furnace employing carbon-based fuel generates the high-temperature furnace gas based on carbon dioxide and water.
For solving the dedusting cleaning system that above-mentioned first technical problem provides, comprise the dedusting purifier that connects admission line and discharge duct and treat that udst separation gas is sent in dedusting purifier through admission line realize gas solid separation for driving, then export the power set of udst separation gas from dedusting purifier through discharge duct, this system also comprises for the temperature controller treated the temperature measuring equipment that udst separation gas carries out thermometric and be connected with temperature measuring equipment in admission line, this temperature controller connects the keying executing agency on temperature-reducing medium injection device and temperature raising medium injection device respectively, treat to inject temperature-reducing medium in udst separation gas to this when starting temperature-reducing medium injection device when the temperature of udst separation gas exceedes design temperature, when the temperature until udst separation gas is treated to inject temperature raising medium in udst separation gas to this lower than starting temperature raising medium injection device during design temperature, thus will treat that udst separation gas remains within the scope of design temperature and enter dedusting purifier.
As a kind of preferred embodiment to above-mentioned gas dust separation system, before and after on described admission line, the first Tube Temperature Sensor and second pipe temperature sensor are set respectively, admission line is connected temperature-reducing medium injection device and temperature raising medium injection device between the first Tube Temperature Sensor with second pipe temperature sensor, if the first Tube Temperature Sensor measuring tempeature is T
1, second pipe temperature sensor measurement temperature is T
2, treat that the minimum allowable temperature of udst separation gas is T
min, treat that the maximum safety temperature of udst separation gas is T
maxif then detect T
1< T
mintime temperature raising medium injection device to open and temperature-reducing medium injection device keeps cutting out, when detecting T
2>=T
minrear temperature raising medium injection device cuts out, if detect T
1> T
maxtime temperature-reducing medium injection device to open and temperature raising medium injection device keeps cutting out, when detecting T
2≤ T
maxrear heating and cooling medium injection device cuts out.
As the another kind of preferred embodiment to above-mentioned gas dust separation system, before and after on described admission line, the first Tube Temperature Sensor and second pipe temperature sensor are set respectively, admission line is connected temperature-reducing medium injection device and temperature raising medium injection device between the first Tube Temperature Sensor with second pipe temperature sensor, admission line is connected between second pipe temperature sensor with dedusting purifier the input of gas circulation line, on admission line the first Tube Temperature Sensor with treat the output being connected gas circulation line between udst separation source of the gas, gas circulation line is provided with power set and valve, if the first Tube Temperature Sensor measuring tempeature is T
1, second pipe temperature sensor measurement temperature is T
2, treat that the minimum allowable temperature of udst separation gas is T
min, treat that the maximum safety temperature of udst separation gas is T
maxif then detect T
1< T
mintime temperature raising medium injection device to open and temperature-reducing medium injection device keeps cutting out, when detecting T
min≤ T
2≤ T
maxrear temperature raising medium injection device cuts out, and when detecting T
2< T
minor T
2> T
maxin time, cuts off the air supply channel to dedusting purifier and will treat udst separation vapor return by gas circulation line, if detect T
1> T
maxtime temperature-reducing medium injection device to open and temperature raising medium injection device keeps cutting out, when detecting T
min≤ T
2≤ T
maxrear heating and cooling medium injection device cuts out, and when detecting T
2< T
minor T
2> T
maxin time, cuts off the air supply channel to dedusting purifier and will treat udst separation vapor return by gas circulation line.
As a kind of specific embodiments of temperature-reducing medium injection device in above-mentioned gas dust separation system, described power set are arranged on discharge duct, discharge duct is provided with gas cooler between dedusting purifier and power set, be connected with as temperature-reducing medium injection device appendix between the exhaust end of power set and described admission line, this appendix be provided with the control valve be connected with temperature controller.
As a kind of specific embodiments of temperature raising medium injection device in above-mentioned gas dust separation system, described admission line connects combustion furnace furnace gas efferent duct, the inlet end of this combustion furnace furnace gas efferent duct is connected with combustion furnace, exhaust end is connected with admission line, and combustion furnace furnace gas efferent duct is provided with the control valve be connected with temperature controller.
For solving above-mentioned second technical problem, dedusting cleaning system of the present invention comprises the dedusting purifier that connects admission line and discharge duct and treats that udst separation gas is sent in dedusting purifier through admission line realize gas solid separation for driving, then export the power set of udst separation gas from dedusting purifier through discharge duct, described power set to be arranged on discharge duct and to adopt frequency conversion fan; This system also comprises for the voltage regulator controllers treated the pressure sensor that udst separation gas carries out pressure measurement and be connected with pressure sensor in admission line, this voltage regulator controllers connects the frequency conversion executing agency of frequency conversion fan, if the measurement pressure of pressure sensor is P
1, treat that the minimum allowable pressure of udst separation gas is P
min, treat that the maximum allowable pressure of udst separation gas is P
max, then P is worked as
1> P
maxthe operating frequency of Shi Zeng great frequency conversion fan, works as P
1< P
mintime reduce the operating frequency of frequency conversion fan.Visible, this dedusting cleaning system can be controlled by the pressure adjustment of frequency conversion fan operating frequency being treated to udst separation gas, makes it be tending towards P
minwith P
maxbetween, realize treating the object that udst separation gas carries out pressure control.
To part provide in the following description below in conjunction with the drawings and specific embodiments aspect that the present invention is described further, the present invention adds and advantage, part will become obvious from the following description, or be recognized by practice of the present invention.
Accompanying drawing explanation
Fig. 1 is the structural representation of dedusting cleaning system in the specific embodiment of the invention.
Detailed description of the invention
Dedusting cleaning system as shown in Figure 1, comprise the dedusting purifier 2 that connects admission line A1 and discharge duct A2 and treat that udst separation gas G1 is sent in dedusting purifier 2 through admission line A1 realize gas solid separation for driving, then export the power set 3 of udst separation gas G2 from dedusting purifier 2 through discharge duct A2, power set 3 are arranged on discharge duct A2, and the input of admission line A1 connects treats udst separation source of the gas 1, this dedusting cleaning system also comprises for the temperature controller treated the temperature measuring equipment that udst separation gas G1 carries out thermometric and be connected with temperature measuring equipment in admission line A1, this temperature controller connects the keying executing agency on temperature-reducing medium injection device and temperature raising medium injection device respectively, treat to inject temperature-reducing medium S1 in udst separation gas G1 to this when starting temperature-reducing medium injection device when the temperature of udst separation gas G1 exceedes design temperature, when the temperature until udst separation gas G1 is treated to inject temperature raising medium S2 in udst separation gas G1 to this lower than starting temperature raising medium injection device during design temperature, thus will treat that udst separation gas G1 remains within the scope of design temperature and enter dedusting purifier 2.
In above-mentioned dedusting cleaning system, discharge duct A2 is provided with gas cooler 6 between dedusting purifier 2 and power set 3, be connected with the appendix 8 as temperature-reducing medium injection device between the exhaust end of power set 3 and described admission line A1, this appendix 8 be provided with the control valve K5 be connected with temperature controller.As opening controlling valve K5, being injected into as temperature-reducing medium S1 through gas cooler 6 cooled udst separation gas G2 that the exhaust end of power set 3 is discharged is treated in udst separation gas G1, thus treats udst separation gas G1 and lower the temperature.Temperature-reducing medium S1 can use through the cooled gas of udst separation G2 completely, but, if temperature-reducing medium S1 uses through the cooled gas of udst separation G2 completely, then not only can reduce the udst separation gas G2 unit interval interior from the output quantity dedusting cleaning system, and, if when the cooling extent treating udst separation gas G1 is larger, the gas of the udst separation G2 then needing temperature lower, requirement that like this will be higher to udst separation gas G2 cooling down proposition, thus increase its cooling difficulty.
Therefore, as effectively supplementing above-mentioned temperature-reducing medium injection device, temperature-reducing medium injection device also comprises an inertia refrigerant injection device.As shown in Figure 1, this inertia refrigerant injection device comprises inertia refrigerant memory device 5, the output of this inertia refrigerant memory device 5 is connected with inertia refrigerant output channel, the output of inertia refrigerant output channel is connected on described appendix 8, inertia refrigerant output channel is provided with the control valve K3 be connected with temperature controller simultaneously.Certainly, the output of inertia refrigerant output channel also can be connected directly between on admission line A1, but is preferably connected on described appendix 8 according to mode above.Like this, when the control valve K3 on the control valve K5 stated on appendix 8 and inertia refrigerant output channel all opens, can through the cooled gas of udst separation G2 as main temperature-reducing medium S1, inertia refrigerant is as auxiliary temperature-reducing medium S1, these two kinds of temperature-reducing medium S1 are mixed fully at the latter end of appendix 8, thus utilize inertia refrigerant first by the further cooling down of udst separation gas G2, promote cooling efficiency.Wherein, the suggestion of inertia refrigerant adopts one or more in cryogenic inert gas, liquid nitrogen, dry ice.Certainly, those skilled in the art's inertia refrigerant that also other can be selected suitable according to concrete technology.
As Fig. 1, in above-mentioned dedusting cleaning system, admission line A1 is also connected with combustion furnace furnace gas efferent duct 9, the inlet end of this combustion furnace furnace gas efferent duct 9 is connected with combustion furnace 4, exhaust end is connected with admission line A1, combustion furnace furnace gas efferent duct 9 is provided with the control valve K2 be connected with temperature controller.This combustion furnace 4 preferably adopt carbon-based fuel (such as natural gas, clean gas, liquefied petroleum gas) to burn to generate using the high-temperature furnace gas of carbon dioxide and water as temperature raising medium S2, can not pernicious gas be produced like this, nonpollution environment.
Embodiment 1
Dedusting cleaning system in above-mentioned detailed description of the invention is specially the system for carrying out udst separation to Electric Cooker phosphorus furnace gas.Therefore, treat that udst separation source of the gas 1 is phosphor furnace accordingly.The yellow phosphorus furnace gas that phosphor furnace produces by after this dedusting cleaning system udst separation, then obtains yellow phosphorus product through condensation washing, refining spearation.In this dedusting process for purifying, udst separation gas G1(and yellow phosphorus furnace gas are treated in requirement) temperature remain 187.5-350 DEG C, treat that udst separation gas G1 will cause the phosphorus steam-condensation in furnace gas and occluding device lower than 187.5 DEG C, undesirable higher than process operation economy when 350 DEG C until udst separation gas G1.The dedusting purifier 2 of this embodiment specifically adopts high-temperature gas filter, installs the filter element of high temperature resistant sintered porous material filter core in high-temperature gas filter.
As Fig. 1, in order to treat that udst separation gas G1 remains on 187.5-350 DEG C and enters dedusting purifier 2, before and after on described admission line A1, the first Tube Temperature Sensor Ta and second pipe temperature sensor Tb is set respectively, admission line A1 is connected above-mentioned temperature-reducing medium injection device and temperature raising medium injection device between the first Tube Temperature Sensor Ta with second pipe temperature sensor Tb, if the first Tube Temperature Sensor Ta measuring tempeature is T
1, second pipe temperature sensor Tb measuring tempeature is T
2, treat that the minimum allowable temperature of udst separation gas is T
min(namely 187.5 DEG C), treat that the maximum safety temperature of udst separation gas is T
max(namely 350 DEG C), if then detect T
1during < 187.5 DEG C, temperature raising medium injection device opens and temperature-reducing medium injection device maintenance cut out (control valve K2 opens, and control valve K3, K5 keep closing), when detecting T
2after>=187.5 DEG C, temperature raising medium injection device cuts out (control valve K2 closes), if detect T
1during > 350 DEG C, temperature-reducing medium injection device opens and temperature raising medium injection device maintenance cut out (control valve K3, K5 open, and control valve K2 keeps closing), when detecting T
2after≤350 DEG C, heating and cooling medium injection device cuts out (control valve K3, K5 close).
In the dedusting process for purifying of embodiment 1, owing to treating that the minimum allowable temperature of udst separation gas is T
min(namely 187.5 DEG C) with treat that the maximum safety temperature of udst separation gas is T
maxwider range between (namely 350 DEG C), therefore, before and after above on described admission line A1, the first Tube Temperature Sensor Ta and second pipe temperature sensor Tb is set respectively, admission line A1 is connected temperature-reducing medium injection device and temperature raising medium injection device between the first Tube Temperature Sensor Ta with second pipe temperature sensor Tb, if the first Tube Temperature Sensor Ta measuring tempeature is T
1, second pipe temperature sensor Tb measuring tempeature is T
2, treat that the minimum allowable temperature of udst separation gas is T
min, treat that the maximum safety temperature of udst separation gas is T
maxif detect T
1< T
mintime temperature raising medium injection device to open and temperature-reducing medium injection device keeps cutting out, when detecting T
2>=T
minrear temperature raising medium injection device cuts out, if detect T
1> T
maxtime temperature-reducing medium injection device to open and temperature raising medium injection device keeps cutting out, when detecting T
2≤ T
maxthe control method that rear heating and cooling medium injection device cuts out can meet and will treat that udst separation gas G1 remains on the technical requirement entering dedusting purifier 2 in 187.5-350 DEG C.
Embodiment 2
Dedusting cleaning system in above-mentioned detailed description of the invention is specially the system for carrying out udst separation to lead anode slurry melting furnace gas.Treat that udst separation source of the gas 1 is reverberatory furnace accordingly.(lead anode slurry is the byproduct produced in electrolytic lead refining process to lead anode slurry melting furnace gas, at present mainly through pyrogenic attack technique recovery valuables wherein, need during process to carry out melting to lead anode slurry, thus produce furnace gas) in main component be arsenic trioxide, antimony oxide, because the de-sublimation temperature of antimony oxide is higher than arsenic trioxide, high purity sb2o3 is obtained in order to reclaim, the dedusting process for purifying of embodiment 2 requires to treat udst separation gas G1(and lead anode slurry melting furnace gas) remain on the comparatively close limit of 400-480 DEG C, be intended to be recovered to high purity sb2o3 particle by dedusting purifier 2, arsenic trioxide keeps gaseous state to discharge from dedusting purifier 2.The dedusting purifier 2 of this embodiment adopts high-temperature gas filter equally, installs the filter element of high temperature resistant sintered porous material filter core in high-temperature gas filter.Because reverberatory furnace temperature fluctuation range is comparatively large, the dedusting process for purifying of embodiment 2 requires again to treat that udst separation gas G1 remains on the comparatively close limit of 400-480 DEG C simultaneously, and the temperature control that therefore embodiment 2 treats udst separation gas G1 requires higher.
As Fig. 1, in order to treat that udst separation gas G1 remains on 400-480 DEG C and enters dedusting purifier 2, before and after on described admission line A1, the first Tube Temperature Sensor Ta and second pipe temperature sensor Tb is set respectively, admission line A1 is connected temperature-reducing medium injection device and temperature raising medium injection device between the first Tube Temperature Sensor Ta with second pipe temperature sensor Tb, at second pipe temperature sensor Tb and the input being connected gas circulation line A3 between dedusting purifier 2 on admission line A1, on admission line A1 the first Tube Temperature Sensor Ta with treat the output being connected gas circulation line A3 between udst separation source of the gas 1, gas circulation line A3 is provided with power set and valve, if the first Tube Temperature Sensor Ta measuring tempeature is T
1, second pipe temperature sensor Tb measuring tempeature is T
2, treat that the minimum allowable temperature of udst separation gas is T
min(namely 400 DEG C), treat that the maximum safety temperature of udst separation gas is T
max(namely 480 DEG C), if detect T
1< T
mintime temperature raising medium injection device to open and temperature-reducing medium injection device keeps cutting out (control valve K2 opens, and control valve K3, K5 keep closedown), when detecting T
min≤ T
2≤ T
maxrear temperature raising medium injection device cuts out, and when detecting T
2< T
minor T
2> T
maxin time, cuts off the air supply channel (closing the valve K1 in Fig. 1) to dedusting purifier 2 and will treat udst separation gas G1 loopback (open valve K4, power set 7 are starting state) by gas circulation line A3, if detect T
1> T
maxtime temperature-reducing medium injection device to open and temperature raising medium injection device keeps cutting out (control valve K3, K5 open, and control valve K2 keeps closedown), when detecting T
min≤ T
2≤ T
maxrear heating and cooling medium injection device cuts out, and when detecting T
2< T
minor T
2> T
maxin time, cuts off the air supply channel (closing the valve K1 in Fig. 1) to dedusting purifier 2 and will treat udst separation gas G1 loopback (open valve K4, power set 7 are starting state) by gas circulation line A3.Visible, the temperature control method temperature control of embodiment 2 is more accurate, is suitable for treating the stricter occasion of udst separation gas G1 temperature requirement.
Embodiment 3
Embodiment 3 is the improvement carried out on embodiment 2 basis.Because reverberatory furnace fluctuation of operating conditions is comparatively large, and the temperature control method more complicated of embodiment 2, no matter treat the G1 loopback of udst separation gas or inject temperature raising medium/temperature-reducing medium, all can cause in admission line A1 the fluctuation treating udst separation gas G1 pressure.Therefore, control to treat udst separation gas G1 pressure, power set 3 specifically have employed frequency conversion fan, dedusting cleaning system has also been set up for the voltage regulator controllers treated the pressure sensor Pa that udst separation gas G1 carries out pressure measurement and be connected with pressure sensor Pa in admission line A1, this voltage regulator controllers connects the frequency conversion executing agency of frequency conversion fan, if the measurement pressure of pressure sensor Pa is P
1, treat that the minimum allowable pressure of udst separation gas is P
min, treat that the maximum allowable pressure of udst separation gas is P
max, then P is worked as
1> P
maxthe operating frequency of Shi Zeng great frequency conversion fan, works as P
1< P
mintime reduce the operating frequency of frequency conversion fan.The pressure that this makes it possible to by treating udst separation gas to the adjustment of frequency conversion fan operating frequency controls, and makes it be tending towards P
minwith P
maxbetween, realize treating the object that udst separation gas carries out pressure control.Embodiment 2 is treated that udst separation gas temperature control technique means and its treat that udst separation gas pressure control technology combines by embodiment 3, the air pressure fluctuation problem caused when compensate for injection temperature raising medium/temperature-reducing medium to a certain extent, achieves the combination of temperature control technique of the present invention and pressure control technology.
Claims (12)
1. dedusting purification method, comprise and will treat that udst separation gas (G1) is sent in dedusting purifier (2) through admission line (A1) and realize gas solid separation, then export the operation of udst separation gas (G2) from dedusting purifier (2) through discharge duct (A2), it is characterized in that: simultaneously to treating that udst separation gas (G1) carries out temperature control in admission line (A1) in aforesaid operations process, temperature-reducing medium (S1) is injected in treat udst separation gas (G1) to this when the temperature of udst separation gas (Q1) exceedes design temperature, when the temperature until udst separation gas (G1) injects temperature raising medium (S2) in treating udst separation gas (G1) to this during design temperature, thus will treat that udst separation gas (G1) remains within the scope of design temperature and enter dedusting purifier (2), before and after described admission line (A1) is upper, the first Tube Temperature Sensor (Ta) and second pipe temperature sensor (Tb) are set respectively, admission line (A1) is positioned between the first Tube Temperature Sensor (Ta) with second pipe temperature sensor (Tb) and is connected temperature-reducing medium injection device and temperature raising medium injection device, if the first Tube Temperature Sensor (Ta) measuring tempeature is T
1, second pipe temperature sensor (Tb) measuring tempeature is T
2, treat that the minimum allowable temperature of udst separation gas is T
min, treat that the maximum safety temperature of udst separation gas is T
maxif detect T
1< T
mintime temperature raising medium injection device to open and temperature-reducing medium injection device keeps cutting out, when detecting T
2>=T
minrear temperature raising medium injection device cuts out, if detect T
1> T
maxtime temperature-reducing medium injection device to open and temperature raising medium injection device keeps cutting out, when detecting T
2≤ T
maxrear heating and cooling medium injection device cuts out.
2. dedusting purification method as claimed in claim 1, is characterized in that: described temperature-reducing medium adopts inertia refrigerant or at least one in the cooled gas of udst separation (G2); Described inertia refrigerant is selected from one or more in cryogenic inert gas, liquid nitrogen, dry ice.
3. dedusting purification method as claimed in claim 1, is characterized in that: described temperature raising medium adopts combustion furnace furnace gas, and the burning of this combustion furnace employing carbon-based fuel generates the high-temperature furnace gas based on carbon dioxide and water.
4. dedusting purification method, comprise and will treat that udst separation gas (G1) is sent in dedusting purifier (2) through admission line (A1) and realize gas solid separation, then export the operation of udst separation gas (G2) from dedusting purifier (2) through discharge duct (A2), it is characterized in that: simultaneously to treating that udst separation gas (G1) carries out temperature control in admission line (A1) in aforesaid operations process, temperature-reducing medium (S1) is injected in treat udst separation gas (G1) to this when the temperature of udst separation gas (Q1) exceedes design temperature, when the temperature until udst separation gas (G1) injects temperature raising medium (S2) in treating udst separation gas (G1) to this during design temperature, thus will treat that udst separation gas (G1) remains within the scope of design temperature and enter dedusting purifier (2), before and after described admission line (A1) is upper, the first Tube Temperature Sensor (Ta) and second pipe temperature sensor (Tb) are set respectively, admission line (A1) is positioned between the first Tube Temperature Sensor (Ta) with second pipe temperature sensor (Tb) and is connected temperature-reducing medium injection device and temperature raising medium injection device, admission line (A1) is positioned at the input being connected gas circulation line (A3) between second pipe temperature sensor (Tb) with dedusting purifier (2), admission line (A1) is positioned at the first Tube Temperature Sensor (Ta) and the output treating to be connected between udst separation source of the gas (1) gas circulation line (A3), gas circulation line (A3) is provided with power set and valve, if the first Tube Temperature Sensor (Ta) measuring tempeature is T
1, second pipe temperature sensor (Tb) measuring tempeature is T
2, treat that the minimum allowable temperature of udst separation gas is T
min, treat that the maximum safety temperature of udst separation gas is T
maxif detect T
1< T
mintime temperature raising medium injection device to open and temperature-reducing medium injection device keeps cutting out, when detecting T
min≤ T
2≤ T
maxrear temperature raising medium injection device cuts out, and when detecting T
2< T
minor T
2> T
maxin time, cuts off the air supply channel to dedusting purifier (2) and will treat udst separation gas (G1) loopback by gas circulation line (A3), if detect T
1> T
maxtime temperature-reducing medium injection device to open and temperature raising medium injection device keeps cutting out, when detecting T
min≤ T
2≤ T
maxrear heating and cooling medium injection device cuts out, and when detecting T
2< T
minor T
2> T
maxin time, cuts off the air supply channel to dedusting purifier (2) and will treat udst separation gas (G1) loopback by gas circulation line (A3).
5. dedusting purification method as claimed in claim 4, is characterized in that: described temperature-reducing medium adopts inertia refrigerant or at least one in the cooled gas of udst separation (G2); Described inertia refrigerant is selected from one or more in cryogenic inert gas, liquid nitrogen, dry ice.
6. dedusting purification method as claimed in claim 4, is characterized in that: described temperature raising medium adopts combustion furnace furnace gas, and the burning of this combustion furnace employing carbon-based fuel generates the high-temperature furnace gas based on carbon dioxide and water.
7. dedusting cleaning system, comprise and connect admission line A1) and discharge duct (A2) dedusting purifier (2) and treat that udst separation gas (G1) is sent in dedusting purifier (2) through admission line (A1) for driving and realize gas solid separation, then export the power set (3) of udst separation gas (G2) from dedusting purifier (2) through discharge duct (A2), it is characterized in that: this system also comprises for the temperature controller treated the temperature measuring equipment that udst separation gas (G1) carries out thermometric and be connected with temperature measuring equipment in admission line (A1), this temperature controller connects the keying executing agency on temperature-reducing medium injection device and temperature raising medium injection device respectively, temperature-reducing medium is injected when starting when the temperature of udst separation gas (G1) exceedes design temperature during temperature-reducing medium injection device treats udst separation gas (G1) to this, when the temperature until udst separation gas (G1) injects temperature raising medium lower than starting during design temperature during temperature raising medium injection device treats udst separation gas (G1) to this, thus will treat that udst separation gas (G1) remains within the scope of design temperature and enter dedusting purifier (2), before and after described admission line (A1) is upper, the first Tube Temperature Sensor (Ta) and second pipe temperature sensor (Tb) are set respectively, admission line (A1) is positioned between the first Tube Temperature Sensor (Ta) with second pipe temperature sensor (Tb) and is connected temperature-reducing medium injection device and temperature raising medium injection device, if the first Tube Temperature Sensor (Ta) measuring tempeature is T
1, second pipe temperature sensor (Tb) measuring tempeature is T
2, treat that the minimum allowable temperature of udst separation gas is T
min, treat that the maximum safety temperature of udst separation gas is T
maxif detect T
1< T
mintime temperature raising medium injection device to open and temperature-reducing medium injection device keeps cutting out, when detecting T
2>=T
minrear temperature raising medium injection device cuts out, if detect T
1> T
maxtime temperature-reducing medium injection device to open and temperature raising medium injection device keeps cutting out, when detecting T
2≤ T
maxrear heating and cooling medium injection device cuts out.
8. dedusting cleaning system as claimed in claim 7, it is characterized in that: described power set (3) are arranged on discharge duct (A2), discharge duct (A2) is positioned between dedusting purifier (2) and power set (3) and is provided with gas cooler (6), be connected with the appendix (8) as temperature-reducing medium injection device between the exhaust end of power set (3) and described admission line (A1), this appendix (8) be provided with the control valve (K5) be connected with temperature controller.
9. dedusting cleaning system as claimed in claim 7, it is characterized in that: described admission line (A1) connects combustion furnace furnace gas efferent duct (9), the inlet end of this combustion furnace furnace gas efferent duct (9) is connected with combustion furnace (4), exhaust end is connected with admission line (A1), combustion furnace furnace gas efferent duct (9) is provided with the control valve (K2) be connected with temperature controller.
10. dedusting cleaning system, comprise and connect admission line A1) and discharge duct (A2) dedusting purifier (2) and treat that udst separation gas (G1) is sent in dedusting purifier (2) through admission line (A1) for driving and realize gas solid separation, then export the power set (3) of udst separation gas (G2) from dedusting purifier (2) through discharge duct (A2), it is characterized in that: this system also comprises for the temperature controller treated the temperature measuring equipment that udst separation gas (G1) carries out thermometric and be connected with temperature measuring equipment in admission line (A1), this temperature controller connects the keying executing agency on temperature-reducing medium injection device and temperature raising medium injection device respectively, temperature-reducing medium is injected when starting when the temperature of udst separation gas (G1) exceedes design temperature during temperature-reducing medium injection device treats udst separation gas (G1) to this, when the temperature until udst separation gas (G1) injects temperature raising medium lower than starting during design temperature during temperature raising medium injection device treats udst separation gas (G1) to this, thus will treat that udst separation gas (G1) remains within the scope of design temperature and enter dedusting purifier (2), before and after described admission line (A1) is upper, the first Tube Temperature Sensor (Ta) and second pipe temperature sensor (Tb) are set respectively, admission line (A1) is positioned between the first Tube Temperature Sensor (Ta) with second pipe temperature sensor (Tb) and is connected temperature-reducing medium injection device and temperature raising medium injection device, admission line (A1) is positioned at the input being connected gas circulation line (A3) between second pipe temperature sensor (Tb) with dedusting purifier (2), admission line (A1) is positioned at the first Tube Temperature Sensor (Ta) and the output treating to be connected between udst separation source of the gas (1) gas circulation line (A3), gas circulation line (A3) is provided with power set and valve, if the first Tube Temperature Sensor (Ta) measuring tempeature is T
1, second pipe temperature sensor (Tb) measuring tempeature is T
2, treat that the minimum allowable temperature of udst separation gas is T
min, treat that the maximum safety temperature of udst separation gas is T
maxif detect T
1< T
mintime temperature raising medium injection device to open and temperature-reducing medium injection device keeps cutting out, when detecting T
min≤ T
2≤ T
maxrear temperature raising medium injection device cuts out, and when detecting T
2< T
minor T
2> T
maxin time, cuts off the air supply channel to dedusting purifier (2) and will treat udst separation gas (G1) loopback by gas circulation line (A3), if detect T
1> T
maxtime temperature-reducing medium injection device to open and temperature raising medium injection device keeps cutting out, when detecting T
min≤ T
2≤ T
maxrear heating and cooling medium injection device cuts out, and when detecting T
2< T
minor T
2> T
maxin time, cuts off the air supply channel to dedusting purifier (2) and will treat udst separation gas (G1) loopback by gas circulation line (A3).
11. dedusting cleaning systems as claimed in claim 10, it is characterized in that: described power set (3) are arranged on discharge duct (A2), discharge duct (A2) is positioned between dedusting purifier (2) and power set (3) and is provided with gas cooler (6), be connected with the appendix (8) as temperature-reducing medium injection device between the exhaust end of power set (3) and described admission line (A1), this appendix (8) be provided with the control valve (K5) be connected with temperature controller.
12. dedusting cleaning systems as claimed in claim 10, it is characterized in that: described admission line (A1) connects combustion furnace furnace gas efferent duct (9), the inlet end of this combustion furnace furnace gas efferent duct (9) is connected with combustion furnace (4), exhaust end is connected with admission line (A1), combustion furnace furnace gas efferent duct (9) is provided with the control valve (K2) be connected with temperature controller.
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| CN105674757B (en) * | 2016-01-29 | 2018-04-20 | 成都易态科技有限公司 | The cooling processing method of industrial furnace gas purification |
| CN107413156B (en) * | 2017-09-08 | 2018-09-14 | 上海超惠通风环保设备有限公司 | Multimedium highly concentrated nano grade dust recycles clean emission processing system |
| CN112871883A (en) * | 2020-12-25 | 2021-06-01 | 广东电网有限责任公司 | Dust removing device |
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Denomination of invention: Gas dust removal and purification method and system Granted publication date: 20151007 Pledgee: China Construction Bank Corporation Chengdu No.1 Sub-branch Pledgor: INTERMET TECHNOLOGIES CHENGDU Co.,Ltd. Registration number: Y2024980037528 |
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