CN104769359B - The gasification combustion method of burned thing - Google Patents
The gasification combustion method of burned thing Download PDFInfo
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- CN104769359B CN104769359B CN201480002335.5A CN201480002335A CN104769359B CN 104769359 B CN104769359 B CN 104769359B CN 201480002335 A CN201480002335 A CN 201480002335A CN 104769359 B CN104769359 B CN 104769359B
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Abstract
The present invention provides a kind of gasification combustion method of the burned thing for the discharge that carbon dioxide is greatly reduced.The present invention is the gasification combustion method for the burned thing for making burned thing burning using primary combustion stove 10, and it includes following process：By in primary combustion stove 10 initial stage temperature adjustment to more than 800 DEG C of process；Into more than 800 DEG C of primary combustion stove 10, the oxygen of the theoretical amount fewer than also during more complete than the burned thing burning of supply or the process containing aerobic gas；And, supplied into more than 800 DEG C of primary combustion stove 10 and be burned thing, by making burned thing thermal decomposition so that while unburned gas is produced, carrying out imperfect combustion and making the process of coal smoke generation；By the way that one side is by forced exhaust in primary combustion stove 10 and depressurizes, continuously or intermittently carry out oxygen or supply containing aerobic gas on one side, so as to produce more than 1000 DEG C of unburned gas and coal smoke, and further thermally decompose and reduce the nonvolatile component that at least a portion is produced by the thermal decomposition of burned thing.
Description
Technical field
It can suppress carbon dioxide discharge the present invention relates to one kind, and can be by the quilt of industrial waste or general discarded object etc.
The gasification combustion method for the burned thing that comburant high-temp combustion is handled.
Background technology
In the boiler, in order to which high efficiency obtains heat energy and makes the burning completely such as fossil fuel of oil or micro mist charcoal etc..For
Burning completely is carried out, it is necessary to air needed for supplying fuel combustion.By supplying the air needed for burning, it can produce its high
The heat energy of temperature, thus, heat exchanger etc. can be used to produce the warm water of high temperature or the vapor of HTHP.In addition, in firepower
In generating, gas-turbine is rotated due to the vapor of HTHP and it is generated electricity.
However, in the above-mentioned methods, due in order that the burning completely such as fossil fuel and the air of excess supply, thus deposit
The problem of combustible loss becomes big.In addition, in the combustion process of the fossil fuel carried out to obtain heat energy etc., normal temperature
When fossil fuel containing aerobic gas with burning, the stage at about 450 DEG C or so of initial stage is risen in combustion furnace from normal temperature, is produced
Substantial amounts of carbon monoxide.Then, the temperature in combustion furnace hastily rises, but is due to that carbon monoxide is unstable material,
Combined when about 650 DEG C or so are reached in combustion furnace with remaining oxygen.As a result, producing substantial amounts of carbon dioxide.Due to the dioxy
It is stable material to change carbon, so as to hardly decompose in combustion.Accordingly, it is difficult to suppress the generation of carbon dioxide, as
Discharge gas is discharged in large quantities into air, causes the deterioration of natural environment.
Xian Hang Ji Intraoperative documents
Patent document
Patent document 1：Japanese Unexamined Patent Publication 11-294735 publications
The content of the invention
The problem that the present invention is solved
The present invention is to develop in view of the above problems, and its object is to provide one kind can significantly cut down carbon dioxide row
The gasification combustion method of the burned thing gone out.
Scheme for solving problem
The present application persons etc. are ground to solve the above problems a little for the gasification combustion method for being burned thing
Study carefully.As a result, being pre-adjusted into more than 800 DEG C of primary combustion stove, theory during burning more complete than burned thing is supplied
The oxygen of few amount or containing aerobic gas than also, by thermally decomposing burned thing, discovery can further suppress carbon monoxide
And the generation of carbon dioxide, so as to complete the present invention.
That is, it is to use once to fire according to the gasification combustion method of the burned thing of the present invention in order to solve above-mentioned problem
Burning stove makes the gasification combustion method of burned thing of burned thing burning, and it includes following process：By in above-mentioned primary combustion stove
Initial stage temperature adjustment to more than 800 DEG C of process；Into more than 800 DEG C of above-mentioned primary combustion stove, supply is fired than above-mentioned
The oxygen of the theoretical amount fewer than also when burning thing burns completely or the process containing aerobic gas；And it is above-mentioned to more than 800 DEG C
The above-mentioned burned thing of supply in primary combustion stove, by make burned thing thermal decomposition so that unburned gas produce it is same
When, the process for carrying out imperfect combustion and producing coal smoke；By one side by forced exhaust in above-mentioned primary combustion stove and depressurize,
Above-mentioned oxygen or the supply containing aerobic gas are continuously or intermittently carried out on one side, so as to produce more than 1000 DEG C above-mentioned unburned
Burn gas and coal smoke, and further thermally decompose and reduce at least a portion by the thermal decomposition of above-mentioned burned thing and not waving for producing
Send out composition.
According to above-mentioned composition, before burned thing burning is made, first by the temperature adjustment in primary combustion stove to 800 DEG C
Very high state of temperature above.Then, oxygen is supplied into primary combustion stove or containing aerobic gas.In addition, also to once
The burned thing of supply in combustion furnace.When supplying burned thing into primary combustion stove, due in primary combustion stove in 800 DEG C with
On high temperature state, burned thing is thermal decomposited.Thus, it is burned among the catabolite of thing, evaporating into for gasification is allocated as
Produced for unburned gas.In addition, a part for burned thing, because oxygen for being supplied into primary combustion stove etc. is than burned
The theoretical amount fewer than also that thing can burn completely, therefore imperfect combustion.Thus, substantial amounts of high temperature coal smoke is produced.
Here, because one side is by above-mentioned unburned gas etc. is from primary combustion stove forced exhaust and depressurizes, on one side continuously
Or the supply of oxygen etc. is discontinuously carried out, therefore the thermal decomposition of burned thing and imperfect combustion are with more than 1000 DEG C of the condition of high temperature
It is lower to produce.As a result, the temperature produced in more than 1000 DEG C of unburned gas and coal smoke, primary combustion stove also turns into 1000 DEG C
More than.Thus, because at least a portion for the nonvolatile component for being burned the thermal decomposition of thing and producing also further is thermally decomposed, press down
Make the yield of the nonvolatile component.In addition, the yield of carbon monoxide can be suppressed, carbon monoxide is contained in coal smoke
In the case of, because oxygen for being supplied into primary combustion stove etc. is the amount fewer than also than the theory for making burned thing burn completely, because
This suppresses the change to carbon dioxide.Moreover, due to the condition of high temperature as more than 1000 DEG C, carbon monoxide in primary combustion stove
Also thermal decomposition, can further suppress the generation of carbon dioxide.
In above-mentioned composition, it preferably includes following process：Produced to the supply of preliminary combustion stove in primary combustion stove
More than 1000 DEG C of unburned gas and coal smoke, in the preliminary combustion stove, pass through the unburned gas of ratio with 50 DEG C~300 DEG C
The oxygen of the theory amount few than also when body and coal smoke burn completely or containing aerobic gas contact so that the unburned gas and
The process of coal smoke thermal decomposition.
According to above-mentioned composition, by unburned gas for will being produced in primary combustion stove etc., in preliminary combustion stove
Contacted with oxygen or containing aerobic gas, so that thermal decomposition coal smoke and unburned gas etc..Here, because above-mentioned oxygen etc. is 50 DEG C
~300 DEG C of high temperature material, therefore the thermal decomposition of coal smoke and unburned gas etc. carries out under atmosphere at higher temperature.Therefore, may be used
More efficiently carry out above-mentioned thermal decomposition.However, the amount of oxygen supplied into preliminary combustion stove etc., due to be more unburned than above-mentioned
The theoretical amount fewer than also for the situation that gas etc. burns completely, therefore an oxygen contained in coal smoke or unburned gas etc. can be suppressed
Change the change of the carbon monoxide produced by carbon or this process and turn to carbon dioxide.If that is, above-mentioned composition when, carbon dioxide can be suppressed
Produce, and more heat resolve unburned gas etc..
In addition, in above-mentioned composition, preferably including following process：By in after-burning stove initial stage temperature adjustment extremely
More than 800 DEG C of process；Into more than 800 DEG C of after-burning stoves, supply during than unburned gas or the complete burning of coal smoke
The oxygen of the theoretical amount fewer than also or the process containing aerobic gas；And into more than 800 DEG C of after-burning stove, supply from one
Unburned gas and coal smoke that secondary combustion furnace or preliminary combustion fire grate goes out, and the work for thermally decomposing the unburned gas and coal smoke
Sequence.
According to above-mentioned composition, the unburned gas produced in primary combustion stove or preliminary combustion stove is made and soot combustion
Before, first by the very high state of temperature of the temperature adjustment in after-burning stove to more than 800 DEG C.Then, to second-time burning
Oxygen is supplied in stove or containing aerobic gas.In addition, also supplying unburned gas etc. into after-burning stove.Into after-burning stove
When supplying unburned gas etc., the state of the high temperature due to being in more than 800 DEG C in after-burning stove, therefore unburned gas etc.
By complete thermal decomposition, the yield of carbon monoxide is also seldom.In addition, in the case of containing carbon monoxide, due to
Oxygen of supply etc. is the amount fewer than also than the theory for making unburned gas etc. burn completely in after-burning stove, therefore is suppressed to two
The change of carbonoxide.Moreover, in the state that the temperature at initial stage than 800 DEG C is at higher temperature in after-burning stove, therefore also can heat point
Carbon monoxide is solved, can further suppress the generation of carbon dioxide.
In addition, in above-mentioned composition, micronized and/or liquid change are used preferably as above-mentioned burned thing
Stone fuel, the micronized and/or liquid fossil fuel are nebulized and sprayed, and are supplied into above-mentioned primary combustion stove
Give.By will be sprayed as the micronized of burned thing and/or liquid fossil fuel, and into primary combustion stove
Supply, so as to make the burned gasification of thing at high temperature more efficient carry out.
The effect of invention
The present invention has obtained effect as described below by the composition of described above.
That is, according to the present invention, temperature adjustment at initial stage is supplied to more than 800 DEG C of primary combustion stove due to being burned thing
It is interior, thus the thermal decomposition burned thing and produce unburned gas.In addition, the oxygen that is supplied into primary combustion stove or containing
The gas of oxygen, due to the theoretical amount fewer than also for that can be burnt completely than burned thing, therefore can make burned thing incomplete
Burn and produce coal smoke.Here, also contain carbon monoxide in coal smoke, but due to being in the shape of hypoxgia in primary combustion stove
State, thus can suppress carbon monoxide become turn to carbon dioxide.Further, since being in more than 1000 DEG C of high temperature in primary combustion stove
State, carbon monoxide is thermal decomposited.As a result, the present invention can provide it is a kind of can significantly cut down carbon dioxide discharge fired
Burn the gasification combustion method of thing.
Brief description of the drawings
Fig. 1 is the stereogram for the outline for representing the gasified combustion apparatus according to present embodiment.
Fig. 2 is the stereogram for the air pipe line for representing the preliminary combustion stove in gasified combustion apparatus.
Embodiment
For the gasification combustion method of the burned thing of present embodiment, following say is carried out based on Fig. 1 and Fig. 2
It is bright.Fig. 1 is the explanation figure for representing the gasified combustion apparatus outline according to present embodiment.Fig. 2 is to represent to fire in above-mentioned gasification
The stereogram of the air pipe line of preliminary combustion stove in burning device.
Illustrated firstly, for the gasified combustion apparatus of the gasification combustion method for present embodiment.Such as Fig. 1 institutes
Show, gasified combustion apparatus 13 is the device that can significantly reduce carbon dioxide discharge and the burned thing of incendivity, and it at least possesses
Primary combustion stove 10, preliminary combustion stove 11, after-burning stove 12 and cyclone separator 15.Preliminary combustion stove 11 is between primary combustion
Set between stove 10 and after-burning stove 12.Primary combustion stove 10 is connected via the 1st communicating pipe 5 with preliminary combustion stove 11.In addition,
Preliminary combustion stove 11 is connected via the 2nd communicating pipe 8 with after-burning stove 12.And then, cyclone separator 15 via discharge pipe 32 with
After-burning stove 12 is connected.
Be not particularly limited, for example, can enumerate as above-mentioned burned thing, general discarded object or industrial waste etc. it is useless
Gurry, fossil fuel, biomass fuel, domestic animal Dung urine etc..It is not particularly limited as above-mentioned fossil fuel, such as except coal
Outside, the micro mist charcoal or natural-gas of micronized, liquid oil, heavy oil, lam-oil etc. can be enumerated.
Primary combustion stove 10 is by thermal decomposition and the above-mentioned burned thing of imperfect combustion so as to produce unburned gas and coal
Cigarette.In the body of heater 1 of primary combustion stove 10, the central lower side inside it is provided with the stove for disposing burned thing
Bed 2.Siege 2 is preferably to have aeration.Thus, oxygen effectively can be supplied to burned thing.As siege 2, for example,
Following material can be used：With upper framework and underframe, and it is provided with therebetween by heating resisting metal (for example, stainless steel
Deng) or ceramics composition, the structure of the shape of netted, cellular, cellular, fibrous, crystal whisker-shaped or these combination of more than two kinds
Part.It should be noted that siege 2 can also design multiple.Now, each siege arbitrarily distance can be configured up and down.In addition,
In body of heater 1, it is provided with as in order to the conveyer 3 of the burned thing feed mechanism of the burned thing of supply on siege 2.And then,
As in order to adjust inside primary combustion stove 10 initial stage temperature thermoregulation mechanism burner 4 be arranged at body of heater 1 appoint
The position of meaning.Burner 4 is also designed to multiple.
Body of heater 1 is the rectangular-shape for possessing heat resistance, and the part at the top of it preferably has such as inclined plane.Inclined plane court
Tilted to the wall of the opposite side of wall with being provided with for the 1st communicating pipe 5.Thus, what is produced inside primary combustion stove 10 is unburned
Gas and coal smoke are burnt easily to discharging the 1st communicating pipe 5.1st communicating pipe 5 was arranged at the top of body of heater 1, thus, to the upper of body of heater 1
The unburned gas and coal smoke that portion rises are easily to discharging the 1st communicating pipe 5.It should be noted that the lower section of siege 2 is provided with use
In the outlet 14 of the burning ash produced after the burned thing burning of discharge.And then, the bottom of body of heater 1 is provided with refractory brick 6.
In addition, conveyer 3 is provided with electric covering 7, the electric covering 7 can be accorded with by electronic roll-up device (not shown) in flechette-type
Number represent above-below direction lifting.And then, in primary combustion stove 10, it is provided with and is fired for being supplied into primary combustion stove 10
Burn the electric plating propulsion 9 of thing.Electric plating propulsion 9, is moved by the direction represented when electric covering 7 is open state to flechette-type symbol
It is dynamic, so as to push burned thing, the burned thing is supplied into primary combustion stove 10 via conveyer 3.
It should be noted that as the feed mechanism of burned thing, being not limited to the embodiment of conveyer 3.For example, making
To be burned thing, it is possible to use the liquid fossil fuel of fossil fuel, oil of the micronized of micro mist charcoal etc. etc., by it
Sprayed downwards from the top of primary combustion stove 10.Supplied by such processes into primary combustion stove 10 burned
Thing, thing is burned so as to effective thermal decomposition.
Burner 4 for the inside of regulation primary combustion stove 10 initial stage temperature thermoregulation mechanism.It is used as burner 4
Species, is not particularly limited, for example, can be used with the burner for fuel such as lam-oil, heavy oil, natural-gas.
In addition, in the present embodiment, burner 4 also has as to supply oxygen inside primary combustion stove 10 or containing aerobic
Gas feed mechanism function.Specifically, burner 4 is made to burn, the temperature at initial stage of the inside of primary combustion stove 10 reaches
At more than 800 DEG C, stop the fuel of supplied burner 4, only sustainable supply oxygen or containing aerobic gas.Hereby it is achieved that conduct
The function of oxygen or the feed mechanism containing aerobic gas is supplied inside to primary combustion stove 10.The supply of burned thing can stop
After the fuel of supplied burner 4, carried out before supply oxygen or containing aerobic gas.
Here, supplying oxygen or the quantity delivered containing aerobic gas by burner 4, being set to can than above-mentioned burned thing
The theoretical amount fewer than also burnt completely.Thus, burned thing can be made to thermally decompose at high temperature and imperfect combustion.In addition, logical
The oxygen for not supplying sufficient quantity is crossed, so as to suppress the generation of carbon monoxide and carbon dioxide.For oxygen or containing aerobic gas
For the occurrence of quantity delivered, can suitably it be set according to species of burned thing etc..It should be noted that as containing
The gas of above-mentioned oxygen is not particularly limited, such as can enumerate air.
Preliminary combustion stove 11 is by the unburned gas and coal smoke that make to produce in primary combustion stove 10, with oxygen or containing aerobic
Gas contact so that the unburned gas etc. burn.As shown in figure 1, preliminary combustion stove 11 is connected with for once firing
Burn the 1st communicating pipe 5 that stove 10 is connected.Coal smoke and unburned gas for being discharged from primary combustion stove 10 etc., from the 1st communicating pipe 5
The flue 21 of inside is fed to via the 1st connection tube inlet 5a.
Oxygen or the air pipe line containing aerobic gas are internally imported in addition, being provided with the top of preliminary combustion stove 11
23.Air pipe line 23 is connected with air taken-into tube 22, and the air taken-into tube 22 is connected with the air blower 25 for being taken into air.Separately
Outside, air pipe line 23, which is provided with, makes cooling water circulation, the cooling tubing 24 for cooling down the air pipe line 23.In air pipe line 23
End be configured with abacus 11a, from abacus 11a hole towards the flow direction of coal smoke and unburned gas etc. injection oxygen etc.
(reference picture 2).It should be noted that being provided with refractory brick 6 in the bottom of preliminary combustion stove 11.
After-burning stove 12 makes in preliminary combustion stove 11 that also unburned unburned gas and coal smoke burn completely.It is secondary
The body of heater 31 of combustion furnace 12 is connected with the 2nd communicating pipe 8 for being connected with preliminary combustion stove 11.Thus, can internally import from
Unburned gas and coal smoke that preliminary combustion stove 11 is discharged etc..In addition, after-burning stove 12 is provided with burner 4, the burner
For adjust after-burning stove 12 inside initial stage temperature thermoregulation mechanism and be also to the inside of after-burning stove 12 supply
Oxygen or the feed mechanism containing aerobic gas.And then, in body of heater 31, the central lower side inside it, with primary combustion
Stove 10 has been uniformly set siege 2.Siege 2 is preferably to have aeration.By setting siege 2, it can make from preliminary combustion stove 11
Coal smoke of the high temperature of discharge etc. passes through, and can further thermally decompose.In addition, identical with the situation of primary combustion stove 10, siege 2 also may be used
It is designed as multiple.And then, the discharge pipe 32 for discharging waste gas is provided with the top of after-burning stove 12.Need explanation
It is that in after-burning stove 12, the lower section of siege 2 is also equipped with the burning ash produced by for discharging after burned thing burning
Outlet 14, and then, the bottom of body of heater 31 is provided with refractory brick 6.
Cyclone separator 15 carries out dust for the discharge gas of the coal smoke discharged from after-burning stove 12 etc., also with making
The function of the discharge gas cooling to 200 DEG C or so in the condition of high temperature.Cyclone separator 15 at least have conus portion 28 and
It is arranged at the dust collecting part 29 of the lower section of conus portion 28.Conus portion 28 converges coniform mode with dust collecting part 29 downward
It is configured.The coal dust of discharge gas separation of the dust collecting part 29 for being discharged from after-burning stove 12 carries out dust.In addition, in circle
Aiutage 27 is provided with the top in tapering 28.And then, aiutage 27 is provided with the air blower 26 for supplying air.
Then, illustrated for the gasification combustion method of the burned thing of present embodiment.
In the gasification combustion method of present embodiment, enter to be about to first inside primary combustion stove 10 initial stage temperature adjustment extremely
More than 800 DEG C of process.Initial stage, the regulation of temperature was carried out by making burner 4 burn.The temperature at initial stage of primary combustion stove 10
For more than 800 DEG C, it is not particularly limited, preferably more than 850 DEG C.Initial stage, temperature can exist according to species of burned thing etc.
Suitably set in the range of said temperature.By the way that the temperature at initial stage of primary combustion stove 10 is adjusted into more than 800 DEG C, it can make to be burned
The reaction of the thermal decomposition of thing is produced.For the upper limit of temperature at initial stage, it is considered preferred to temperature in stove thereafter rise and
The heat resistance of primary combustion stove 10 is suitably set.It should be noted that the temperature at initial stage inside primary combustion stove 10 is
The value determined in the vicinity of the upper top surface of the primary combustion stove 10.
Secondly, oxygen is supplied into primary combustion stove 10 or containing aerobic gas.While pressure in primary combustion stove 10 is arranged
Gas is simultaneously depressurized while carrying out oxygen or the supply containing aerobic gas.Here, the forced exhaust in primary combustion stove 10, by setting
In preliminary combustion stove 11 air blower 25 and be arranged at the air blower 26 of cyclone separator 15 described later and carry out.In present embodiment
In, burner 4 is burnt and the temperature at initial stage inside primary combustion stove 10 is adjusted to after more than 800 DEG C, stop supplied burner 4
Fuel, only sustainable supply oxygen or containing aerobic gas.Thus, oxygen can be supplied into primary combustion stove 10 or containing aerobic gas
Body.Oxygen or supply containing aerobic gas can be carried out continuously or intermittently.In addition, being arranged for the pressure in primary combustion stove 10
For gas, also can continuously or intermittently it carry out.Oxygen or quantity delivered containing aerobic gas are burnt completely than burned thing
The theoretical amount fewer than also of situation.
Then, burned thing is supplied into primary combustion stove 10.The supply of burned thing, by being put into simultaneously from conveyer 3
It is placed on siege 2 to carry out.It should be noted that the supply of burned thing, also can be before supply oxygen or containing aerobic gas
Carry out.Or, can be while oxygen be supplied or containing aerobic gas, or carry out after supply.And then, in this process, once fire
The forced exhaust burnt in stove 10 also can be carried out continuously or intermittently.
When burned thing is put into the primary combustion stove 10 under more than 800 DEG C of atmosphere, the burned thing is produced
Pyrolysis.Thus, the catabolite of burned thing is generated.Among the catabolite, volatile ingredient is used as unburned gas
Produce.In unburned gas, the imflammable gas containing hydrocarbon etc..And then, the unburned gas of generation is in described later extremely high
The state of warm (for example, more than 1000 DEG C).Further, since in primary combustion stove 10 being the state of hypoxgia, therefore it is burned thing
Imperfect combustion, also produces the coal smoke containing carbon monoxide.However, because the temperature in primary combustion stove 10 is more than 1000 DEG C
High temperature, and oxygen is also at seldom state, and carbon monoxide, which will not become, to be turned to carbon dioxide and be thermal decomposited.As a result, big
Amount ground produces more than 1000 DEG C of black smoke (coal smoke).In above-mentioned coal smoke, such as the particulate containing carbon.
Here, in this process, as described above, by carrying out the decompression based on the forced exhaust in primary combustion stove 10.And
And, coal smoke of high temperature etc. is sent into preliminary combustion stove 11 and after-burning stove 12.Therefore, what is produced in primary combustion stove 10 is big
Holdup time in the high temperature unburned gas of amount or the stove of high temperature coal smoke is short.On the other hand, due into primary combustion stove 10
Continuously or intermittently sustainable supply oxygen or containing aerobic gas, for burned thing, is continuing to supply than making it fire completely
The oxygen of the theoretical amount fewer than also of the situation of burning.As a result, because the imperfect combustion for being burned thing also continues, therefore once fire
The temperature burnt in stove 10 rises to 1000 DEG C~1400 DEG C or so by 800 DEG C of temperature at initial stage in very short time.
In addition, (when burned thing is, for example, carbon compound, volatility is low to be consolidated the nonvolatile component in above-mentioned catabolite
The carbon component of body) in, because the temperature inside primary combustion stove 10 turns into more than 1000 DEG C of the condition of high temperature, produce thermal decomposition.
Thus, in present embodiment, volume reduction, the minimizing of nonvolatile component can also be realized.
It should be noted that for the in-furnace temperature of primary combustion stove 10, in order to prevent from being increased over this once
The heat resistance of combustion furnace 10, can also carry out the control of in-furnace temperature.As the control method of in-furnace temperature, for example, it can enumerate,
Adjust the oxygen that is supplied into primary combustion stove 10 or quantity delivered, regulation exhaust velocity containing aerobic gas etc..
Then, in the substantial amounts of unburned gas and coal smoke that primary combustion stove 10 is produced and is discharged, via the 1st communicating pipe 5
It is fed to preliminary combustion stove 11.In preliminary combustion stove 11, the oxygen of high temperature is imported or containing aerobic gas from air pipe line 23.Make
For oxygen or the temperature containing aerobic gas, or normal temperature, but be preferably in the range of 50 DEG C~300 DEG C.It is normal by importing
The oxygen of temperature or containing aerobic gas, thermally decomposes in preliminary combustion stove 11 unburned gas and coal smoke, but by by oxygen etc.
Temperature be adjusted in above-mentioned number range, turn into state at higher temperature in preliminary combustion stove 11, specifically, as more than 900 DEG C
To the state of more than 1100 DEG C of high temperature.Therefore, the thermal decomposition of unburned gas or coal smoke can be carried out.Further, since also making one
Carbonoxide is thermally decomposed, so as to also can more reduce the generation of carbon dioxide.However, the oxygen that is supplied into preliminary combustion stove 11 or containing
The quantity delivered of aerobic gas, for the theoretical amount fewer than also of situation about being burnt completely than unburned gas and coal smoke etc..Therefore,
The state of hypoxgia is also in preliminary combustion stove 11.Thus, the change from carbon monoxide to carbon dioxide is suppressed.
Then, from preliminary combustion stove 11 discharge high temperature discharge gas, by forced exhaust via the 2nd communicating pipe 8 to
After-burning stove 12 is supplied.Forced exhaust is by being arranged at the air blower 25 of preliminary combustion stove 11, and is arranged at rotation described later
The air blower 26 of wind separator 15 is carried out.In after-burning stove 12, before supply discharge gas, in advance by internal temperature at initial stage
Degree (temperature of upper adjacent top surface) regulation, to more than 800 DEG C, is more preferably adjusted in the way of as more than 850 DEG C.It is used as tune
The thermoregulation mechanism of the temperature in after-burning stove 12 is saved, can be enumerated for burner of primary combustion stove 10 etc..Burner
Deng set location be not particularly limited, can design as needed in arbitrary position.In addition, the temperature adjuster of burner etc.
Structure is also designed to multiple.It should be noted that for after-burning stove 12 initial stage temperature the upper limit for, preferably consider
Temperature in stove afterwards rise and after-burning stove heat resistance and suitably set.
In in after-burning stove 12, oxygen is supplied or containing aerobic gas.While to carrying out pressure row in after-burning stove 12
Gas is while carry out the supply of oxygen etc..In present embodiment, make burner combustion and by the temperature at initial stage inside after-burning stove 12
Degree is adjusted to after more than 800 DEG C, stops the fuel of supplied burner, only continues to supply oxygen or containing aerobic gas.Thus, can be to
Oxygen is supplied in after-burning stove 12 or containing aerobic gas.Oxygen or supply containing aerobic gas can continuously or intermittently be entered
OK.Oxygen or the quantity delivered containing aerobic gas, for situation about being burnt completely than unburned gas and coal smoke etc. theory than also few
Amount.
The imperfect combustion unburned gas and during coal smoke in after-burning stove 12, the temperature in stove maintain 1000 DEG C~
In the range of 1300 DEG C.Thus, can thermal decomposition is supplied to after-burning stove 12 completely unburned gas etc..Further, since
In the presence of carbon monoxide, the state of hypoxgia is also in after-burning stove 12, thus will not become and turn to two
Carbonoxide.Further, because, in more than 1000 DEG C of the condition of high temperature, carbon monoxide is thermal decomposited in after-burning stove 12.
Discharge gas generated in after-burning stove 12, is forced exhaust from discharge pipe 32 afterwards.Here, above-mentioned discharge gas is strong
System exhaust (including the forced exhaust in primary combustion stove 10 and preliminary combustion stove 11.), pass through the air blast in cyclone separator 15
Machine 26 is carried out to the wind pushing air of aiutage 27.That is, by air blower 26 to the wind pushing air of aiutage 27, so that in cyclonic separation
The conus portion 28 of device 15 turns into the state of negative pressure.As a result, the discharge gas of the high temperature generated in after-burning stove 12 is from row
Outlet pipe 32 is sucked into the conus portion 28 of cyclone separator 15.
Secondly, the discharge gas of cyclone separator 15 is sucked into, the tangential direction of the internal face of conus portion 28 is blown to.Row
The flowing of outlet bodily form curl.Because the coal dust in discharge gas has weight, therefore caught by the spiral helicine flowing,
And rotated in conus portion 28 while flowing down downwards.Then, coal dust is piled up in dust collecting part 29.On the other hand, with coal dust
Aiutage 27 of the cleaning discharge gas of separation with the air that is sent from air blower 26 together from the top of conus portion 28 is put to outside
Go out.
Here, because the air that is supplied from air blower 26 is normal temperature, therefore the discharge gas supplied to cyclone separator 15
It is cooled.Specifically, the discharge gas of about 1000 DEG C~1300 DEG C of high temperature is cooled to 200 DEG C or so.Thus, two can be suppressed
The generation of the harmful substance of Evil English etc..
It should be noted that in present embodiment, the unburned thing of unburned gas etc. can be made in preliminary combustion stove 11
In the case of fully burning, the processing in after-burning stove 12 can be omitted in.During this situation, discharged from preliminary combustion stove 11
Waste gas is by direct forced exhaust to cyclone separator 15 etc..
By with upper type, in the gasification combustion method of the burned thing of present embodiment, can more suppress than existing method
The discharge of carbon dioxide simultaneously can make burned thing burning.
(other items)
In the gasification combustion method of the burned thing of present embodiment, due in the stove of primary combustion stove and after-burning stove
Temperature is high temperature extremely, can carry out Waste Heat Reuse as the heat energy of boiler or TRT.In the heat energy as boiler
In the case of utilization, by heat exchanger (not shown) being connected with primary combustion stove or after-burning stove etc. so as to being given up
Heat utilization.In addition, in the case where being utilized as the heat energy of generating, for example can be by the way that gas turbine and after-burning stove be connected
Connect, drive the generator being connected with the gas turbine so that it generates electricity.
In existing boiler or TRT, during in order to obtain heat energy and combustion of fossil fuels etc., substantial amounts of dioxy is produced
Change carbon, but in the present embodiment, due to carrying out burned thing burning in the state of hypoxgia, even if generation carbon monoxide
Its change can be suppressed and turn to carbon dioxide.The condition of high temperature waited in primary combustion stove as 1000 DEG C is additionally, since, carbon monoxide can be made
Thermal decomposition.As a result, compared with existing boiler or TRT, it is possible to decrease the discharge of carbon dioxide.
And then, it is possible to use the high-temperature water made by above-mentioned heat exchanger carries out the synthesis of hydrocarbon.During this situation, using upper
Stating high-temperature water will be adjusted under 220 DEG C~270 DEG C of atmosphere for synthesizing the reative cell of hydrocarbon, can make the gaseous mixture of carbon monoxide and hydrogen
Body is contacted with iron class catalyst, cobalt class catalyst or ruthenium class catalyst, and hydrocarbon is synthesized by the general uncommon reaction of Fischer-Toro.
The burned thing of the hydrocarbon arrived, the also recycling gasification combustion method in present embodiment.In addition, also can be by according to above-mentioned side
What method generated electricity is electrically used in the energy of electric decomposition of water.It is recycling in upper by hydrogen obtained from the electric decomposition of water
In the synthesis for stating hydrocarbon.
The explanation of symbol
1 body of heater
2 sieges
3 conveyers
4 burners
5 communicating pipes
5a connects tube inlet
6 refractory brick
7 electric coverings
8 communicating pipes
9 electric plating propulsions
10 primary combustion stoves
11 preliminary combustion stoves
11a abacuses
12 after-burning stoves
13 gasified combustion apparatus
14 outlets
15 cyclone separators
21 flues
22 air taken-into tube
23 air pipe lines
24 cooling tubings
25th, 26 air blower
27 aiutages
28 conus portions
29 dust collecting parts
31 bodies of heater
32 discharge pipes
Claims (2)
1. a kind of gasification combustion method of burned thing, it is at least to use primary combustion stove, preliminary combustion stove and secondary combustion
Burning stove makes the gasification combustion method of burned thing of burned thing burning, and it includes following process：
By in the primary combustion stove initial stage temperature adjustment to more than 800 DEG C of process,
Into more than 800 DEG C of the primary combustion stove, while by forced exhaust in the primary combustion stove and depressurizing continuous on one side
The oxygen of ground or theory when discontinuously supplying burning more complete than the burned thing amount fewer than also or the work containing aerobic gas
Sequence, and
The burned thing is supplied to being supplied in the oxygen or the primary combustion stove containing aerobic gas, by making the quilt
Comburant thermal decomposition so as to produce while more than 1000 DEG C of unburned gas, progress imperfect combustion and produce 1000 DEG C with
On coal smoke, and further thermally decompose and reduce at least a portion by the thermal decomposition of the burned thing produce it is non-volatile into
The process divided,
To the preliminary combustion stove supply more than 1000 DEG C of the unburned gas being produced in the primary combustion stove and
Coal smoke, in the preliminary combustion stove, passes through reason when unburned gas described in the ratio with 50 DEG C~300 DEG C and the complete burning of coal smoke
Contacted by the oxygen of the amount fewer than also or containing aerobic gas, so that the unburned gas and the process of coal smoke thermal decomposition,
By in the after-burning stove initial stage temperature adjustment to more than 800 DEG C of process,
Into more than 800 DEG C of the after-burning stove, the unburned gas or coal than going out from the preliminary combustion fire grate are supplied
The oxygen of the theoretical amount fewer than also when cigarette burns completely or the process containing aerobic gas, and
Into more than 800 DEG C of the after-burning stove, the unburned gas and coal smoke gone out from the preliminary combustion fire grate is supplied,
And the process for thermally decomposing the unburned gas and coal smoke.
2. the gasification combustion method of burned thing according to claim 1, it is characterised in that：
Micronized is used as the burned thing and/or liquid fossil fuel, by the micronized and/or liquid
Fossil fuel nebulize spraying, to be supplied into the primary combustion stove.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2014-118257 | 2014-06-09 | ||
| JP2014118257A JP5969540B2 (en) | 2014-06-09 | 2014-06-09 | Gasification combustion method for combustibles |
| PCT/JP2014/066221 WO2015190003A1 (en) | 2014-06-09 | 2014-06-19 | Gasification and combustion method for material to be combusted |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104769359A CN104769359A (en) | 2015-07-08 |
| CN104769359B true CN104769359B (en) | 2017-07-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201480002335.5A Expired - Fee Related CN104769359B (en) | 2014-06-09 | 2014-06-19 | The gasification combustion method of burned thing |
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Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000297914A (en) * | 1999-04-13 | 2000-10-24 | Hitachi Metals Ltd | Method for treating combustion gas |
| JP2005273975A (en) * | 2004-03-24 | 2005-10-06 | Itaru Watanabe | Waste treatment apparatus and waste treatment method |
| JP2006097915A (en) * | 2004-09-28 | 2006-04-13 | Hitachi Metals Ltd | Incineration facility |
| JP2007163078A (en) * | 2005-12-15 | 2007-06-28 | Jfe Engineering Kk | Waste disposal method and device |
| CN101541926B (en) * | 2006-10-23 | 2013-03-20 | 学校法人长崎综合科学大学 | Biomass gasification apparatus |
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