CN105107368B - Denitration agent for flue gas denitrification as well as preparation method and application of denitration agent - Google Patents
Denitration agent for flue gas denitrification as well as preparation method and application of denitration agent Download PDFInfo
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- CN105107368B CN105107368B CN201510561950.6A CN201510561950A CN105107368B CN 105107368 B CN105107368 B CN 105107368B CN 201510561950 A CN201510561950 A CN 201510561950A CN 105107368 B CN105107368 B CN 105107368B
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Abstract
The invention discloses a denitration agent for flue gas denitrification as well as a preparation method and an application of the denitration agent. According to the denitration agent and the preparation method, titanium dioxide, attapulgite clay or imvite particles are adopted as an inert carrier, calcium hydroxide and yttrium hydroxide are dissolved into glycerol so that calcium hydroxide and yttrium hydroxide react with a sulphur source so as to generate denitration agent particles; the denitration agent particles react with NOx gas in flue gas in a denitration reactor, so as to reduce the NOx gas into non-toxic and harmless N2 gas, after reaction, the denitration agent is fluidized and then enters into another reactor to react with gasified synthetic gas inside the reactor, so as to be regenerated into denitration agent particles with denitrification property, then the denitration agent particles return to the denitration reactor. The denitration agent as well as the preparation method and the application thereof have the advantages that the preparation process is simple in technology, strong in controllability, safe and reliable, and free of secondary pollution, the prepared denitration agent is high in denitration efficiency, and the technical problems that in the denitration process in the prior art, the catalyst is high in price and difficult to recycle, and the like are solved.
Description
Technical field
The invention belongs to process the environmental protection technical field of nitrogen-containing oxide flue gas, it is related to one kind and catches from industrial smoke
Obtain NOxGas the denitrfying agent granule of harmless treatment, and in particular to a kind of denitrfying agent of denitration from flue gas and its preparation side
Method and application.
Background technology
In coal in China consumption, 80% coal is used as steam coal and directly burns, and there are a large amount of sulfur in its combustion product gases
The pollutant such as oxide, nitrogen oxides and carbon dioxide.At present, China to the control of sulfur dioxide and dust achieved with substantially into
Effect.2010, national sulfur dioxide and dust discharge amount were respectively 2185.1 and 829.1 ten thousand tons, reduce 1.3% than 2009
With 2.1%.But national nitrogen oxide emission increased 9.4% than 2009 within 2010, reach 1852.4 ten thousand tons.It can be seen that, phase
Than in the reduction of the gross contamination emission such as sulfur dioxide and dust, discharged nitrous oxides total amount quickly increases.According to expert
Prediction, according to current development trend, if not taking effective control measure, is up to 3540 to the year two thousand thirty nitrogen oxide emission
Ten thousand tons, huge injury certainly will be caused to China's ecological environment and national economy.Contribution of the nitrogen oxides to China's Acid Rain Pollution be in
Ascendant trend, NO in acid rain3 —Ion concentration substantially increases, and NOxGas has stronger greenhouse effect.Therefore, control nitrogen oxidation
The discharge of thing, the discharge for especially controlling coal fired thermal power plant nitrogen oxides are extremely urgent.
Industrially mainly include using more gas denitrifying technology at present：Selective catalytic reduction（SCR）, selectivity
Noncatalytic reduction（SNCR）, electron beam irradiation method, impulse electric corona plasma method, red-hot charcoal method, wet type Absorption via Chemical Complexation, activity
Carbon adsorption, microbial method etc..Consider the factors such as engineering reliability, initial cost, operating cost, denitration efficiency, at present quilt
Large-scale industrial application is SCR methods and SNCR methods.SCR methods are referred in the presence of catalyst, reducing agent（Such as liquefied ammonia）With cigarette
Reaction of nitrogen oxides in gas generates harmless nitrogen and water, so as to remove the NOx in flue gas.The catalyst for using mainly includes
Molecular sieve catalyst, absorbent charcoal based catalyst, FeTiOx composite oxide catalysts and V2O5-WO3/TiO2Catalyst.Expensive
The one-time investment that catalyst and bulky catalytic tower cause SCR technology is excessive, and must change after catalyst poisoning,
Its operating cost is increased again, limits the extensive application of the technology.SNCR methods reaction temperature is generally greater than 850 DEG C, by NH3、
The reducing agents such as carbamide are sprayed in flue gas, are carried out selective reaction with NOx and are reduced NOx, generate nitrogen and water.SNCR methods are not used
Catalyst, compared with SCR method, one-time investment greatly reduces, and flow process is succinct, and system operation reliability is strong, and maintenance is convenient fast
Victory, but the method haves the shortcomings that desulfuration efficiency is relatively low.The denitrating flue gas situation very severe of China, is badly in need of exploitation more efficient
, the denitration technology of more economical property.
Chemical chain technology is a kind of brand-new chemical engineering unit operation theory, it with solid particle between two reactors
Completing the transmission and transfer of oxygen atom, at present, chemical chain technology realizes the burning or gasification of solid fuel to circular response, tool
There is CO2From separating, energy utilization efficiency high and the advantages of good oxygen carrier cycle performance.But, yet there are no chemical chain skill
Art is used for the report in denitrating flue gas field.
The content of the invention
The drawbacks described above existed for denitrating flue gas in prior art and deficiency, object of the present invention is to provide a kind of
Denitrfying agent of denitration and its preparation method and application from flue gas.The present invention is with titanium dioxide, attapulgite clay or montmorillonite
Grain is inert carrier, and calcium hydroxide and Yttrium trihydroxide are dissolved in glycerol, makes calcium hydroxide and Yttrium trihydroxide with thioaldehydes or sulfur
Ketone or the reaction of the Organic substance such as thiocarboxylic acid or thiourea or thioamides, generation active component is CaxSx+3yY2yDenitrfying agent granule.
Denitrfying agent granule is uninterruptedly circulated between two reactors, realizes the circular regeneration of denitrating flue gas and denitrfying agent.By adopting this
The technical scheme of invention, can be so that in the current commercialization denitration technology of effectively solving, catalyst is on the high side, be difficult to recycling etc.
Technical problem.
For achieving the above object, the present invention is achieved using following technical proposals：
A kind of preparation method of the denitrfying agent of the denitration from flue gas, it comprises the following steps：
（1）Prepare reactant liquor：Calcium hydroxide and Yttrium trihydroxide granule are dissolved in polyhydric alcohol simultaneously and obtain the first solution, the
In one solution, Y/Ca mol ratios are 0.1-2, and in solution, the molar concentration sum of both Y-ion, Ca ions is 0.01-10 mol/
First solution is placed in ultrasound 0.5-5 h under 200-600 W ultrasound conditions and is completely dissolved to granule by L；
（2）Dipping：First solution is added in inert carrier particle, under the ultrasonic power conditions of 200-600 W
Ultrasound makes effects of ion be evenly distributed in carrier particle exterior surface；
（3）Dropwise dropwise reaction liquid：Under 200-600 W ultrasound conditions, the use of polyhydric alcohol is that solvent dissolving sulphur source is obtained
Second solution；Second solution is added dropwise over into step（2）In solution after the completion of impregnating, persistently stir during Deca
Mix, promote the formation of sulfide in solution；
（4）Stand and roasting：By step（3）The mixed liquor of acquisition stands 2-8 h and filters, by solid particle in noble gases
N2In 50-300 under atmosphereoRoasting in C temperature ranges is dried, that is, obtain being loaded with the denitrfying agent granule of Ca-S-Y active components.
Further improvement to above-mentioned technical proposal：The step（1）Middle calcium hydroxide and Yttrium trihydroxide particle diameter are in 0.5-
In 500 μ ms.
Further improvement to above-mentioned technical proposal：The step（1）Middle polyhydric alcohol is glycerol, ethylene glycol or butanediol
In one or more.
Further improvement to above-mentioned technical proposal：The step（2）Middle inert carrier is particle diameter in 0.6-300 μm of model
One or more in titanium dioxide, attapulgite clay or montmorillonite in enclosing.
Further improvement to above-mentioned technical proposal：The step（2）In dipping process, the volume/inertia of the first solution
Carrier granular volume ratio is in the range of 1.5-10.
Further improvement to above-mentioned technical proposal：The step（1）Middle sulphur source is thioaldehydes, thioketone, thiocarboxylic acid, thiourea
Or one or more in thioamides.
Further improvement to above-mentioned technical proposal：The step（3）In the second solution with the speed of 0.2-10 ml/s by
Drop instills step（2）In solution after the completion of impregnating.
Present invention also offers using denitrfying agent obtained in the preparation method, the active component of the denitrfying agent is
CaxSx+3yY2y。
Present invention also offers described denitrfying agent is in the application for the denitration from flue gas, it comprises the following steps：
（1）The denitrfying agent sends into Benitration reactor by screw(-type) feeder, and flue gas enters from Benitration reactor bottom inlet
Enter, flue gas is flowed up from below Benitration reactor, contact and react with the denitrfying agent for being added, reaction temperature control exists
300-800℃；The NOx gas reductions contained in flue gas are N by the reaction2, the active component in denitrfying agent inactivated gradually, is inactivated
Denitrfying agent from lower part outlet flow out Jing material returning devices enter regeneration reactor；
（2）Denitrfying agent meets with the gasification synthesis gas being passed through from reactor bottom into after regeneration reactor, high temperature and high speed
Gasification synthesis gas denitrfying agent is carried, denitrfying agent is regenerated after gasification synthesis gas reduction while being carried, anti-from regeneration
Device outlet expellant gas and solid particle is answered to flow through cyclone dust extractor and realize gas solid separation, the denitrfying agent after regeneration returns denitration
Reactor.
Compared with prior art, advantages of the present invention and good effect are：
1st, in the present invention, denitrfying agent granule is prepared by chemical reaction infusion process, with calcium hydroxide, Yttrium trihydroxide, the third three
The Organic substance such as alcohol, thioaldehydes or thioketone or thiocarboxylic acid is raw material, and cheap and prepared denitrfying agent granule is to environment friend
It is good, continuously can recycle in denitrating system；
2nd, the present invention prepared by denitrfying agent granule feasible system in denitration/regenerative process uninterrupted continuous operation,
Regenerative process can be completed in a reactor, be enormously simplify the regeneration technology of denitrfying agent, reduced energy consumption and cost, and
And significantly improve the efficiency of whole denitrating system；
3rd, in the application process of denitrfying agent of the present invention, used apparatus main body is only Benitration reactor, regenerates instead
Device, cyclone separator and material returning device are answered, apparatus structure is simple, and operating procedure is easy, and system controllability and measurability is high, safe and reliable；
4th, have the advantages that denitrating flue gas rate is high using technical scheme of the present invention, reachable 90 more than %, and NOxGas
It is converted into N2, whole process do not produce secondary pollution.
The present invention can both make flue gas qualified discharge, be capable of achieving NO in flue gas againxThe harmless treatment of gas, overcomes existing
Technology exist denitrating catalyst it is on the high side, be difficult to recycle etc. technical problem.
After the specific embodiment of the present invention is read in conjunction with the accompanying, the other features and advantages of the invention will become more clear
Chu.
Description of the drawings
Fig. 1 is that, using the first Deca mode in the embodiment of the present invention 1, the SEM scannings of the solid product for preparing are shone
Piece.
Fig. 2 is that, using second Deca mode in the embodiment of the present invention 1, the SEM scannings of the solid product for preparing are shone
Piece.
Fig. 3 is the denitration efficiency figure embodied during Example 1 and Example 2 of the present invention is tested.
Fig. 4 is schematic flow sheet when carrying out denitrating flue gas in the present invention using denitrfying agent, wherein, 1, screw(-type) feeder；
2nd, regeneration reactor；3rd, tedge；4th, cyclone separator；5th, the first pressure fan；6th, the second pressure fan；7th, Benitration reactor；8、
Material returning device.
Specific embodiment
With reference to the accompanying drawings and detailed description technical scheme is described in further detail.
A kind of preparation method of the denitrfying agent of the denitration from flue gas, preparation process are comprised the following steps：
（1）Prepare reactant liquor.Calcium hydroxide of the particle diameter in 0.5-500 μ ms and Yttrium trihydroxide powder are taken, is dissolved in
The first solution is obtained in 40-200 ml glycerol, in first solution Y/Ca mol ratios in the range of 0.1-2, in solution
The molar concentration sum of both Y-ion, Ca ions is 0.01-10 mol/L.Solution is placed in ultrasonic generator in 200-
Ultrasound 0.5-5 h under 600 W ultrasonic power conditions so that calcium hydroxide and Yttrium trihydroxide are completely dissolved；
（2）Dipping.Titanium dioxide, attapulgite clay or montmorillonite particle using particle diameter in 0.6-300 μ ms as
Inert carrier pours beaker into, and the first solution for having dissolved calcium hydroxide and Yttrium trihydroxide powder is poured in solid particle, wherein
In the range of 1.5-10, ultrasonic 0.5-5 h are carrying effects of ion to liquor capacity/inert carrier particle stacking volume ratio
Body particle exterior surface is evenly distributed；
（3）Dropwise dropwise reaction liquid.Take the thioaldehydes or thioketone or thiocarboxylic acid or thiourea or thio acyl of quality 0.7-47 g
Amine, obtains the second solution in being dissolved in the glycerol solvent of volume 50-500 ml, it is ultrasonic that course of dissolution betides 200-600 W
In the ultrasonic generator of power, the time is 0.5-5 h；The 50-500 ml glycerin solutions of sulphur source will be dissolved, with 0.2-10
The speed of ml/s dropwise instills（2）In the solution that step is prepared, persistently stirred using magneton or stirring paddle during Deca；
（4）Stand and roasting.By（3）The mixed liquor that step is prepared stands 2-8 h, in noble gases N after filtration2Atmosphere
Under in 50-300oRoasting in C temperature ranges is dried, that is, obtain being loaded with the denitrfying agent granule of CaS active components.
Step the（1）Step, is Y/Ca mole in control denitrfying agent active component the reason for Y/Ca mol ratios in control solution
Than.The incorporation of Y components in denitrfying agent can reduce the particle diameter of the active component for loading on a inert carrier, living during delayed response
Property component sintering, promote denitrfying agent denitration activity.Content of the auxiliary agent in denitrfying agent has an optimum.When the content mistake of Y
When low, active component particles particle diameter is larger, and activity is less；When the too high levels of Y, the incorporation of Y-ion changes active component
Lattice, have impact on the electron-hole number in crystal, equally inhibit denitration activity.So, Y/Ca is controlled in this experiment and is rubbed
That ratio is in the range of 0.1-2.
Step the（3）The glycerin solution for having dissolved sulfurous organic compound is dropwise instilled calcium hydroxide and Yttrium trihydroxide by step
In solution, drop rate need to be controlled within the specific limits.It is found through experiments, drop rate is excessive, forms calcium sulfide and sulfuration
The speed of yttrium particle is too fast, causes its grain diameter excessive.The grain diameter of this active component is once excessive, and denitration performance is just
Drastically decline.Through experimental verification, drop rate need to be controlled in the speed range of 0.2-10 ml/s, the denitration for preparing
Agent denitration performance is ideal.Depart from this scope, denitrfying agent granule denitration performance is poor, or even cannot practical application on a large scale.
Embodiment 1
The invention provides one kind removes NO from flue gasxDenitrfying agent preparation method, comprise the following steps：
1st, prepare reactant liquor：Take 1.0 g calcium hydroxide particles and 0.3 g Yttrium trihydroxide granules are put in beaker, addition 30
The dissolving of ml glycerol obtains the first solution, is placed in ultrasonic generator the ultrasound 2h under 300 W ultrasonic power conditions.
2nd, impregnate：After calcium hydroxide and Yttrium trihydroxide are completely dissolved, solution is poured into 4 g particle diameters in 0.6-300 μm of model
In the titanium dioxide granule for enclosing.Under 300 W ultrasonic power conditions ultrasonic 0.5 h is placed in ultrasonic generator equally, can be real
Homogeneous impregnation of the ion in carrier surface in existing solution.
3rd, dropwise reaction liquid：The thioaldehydes for taking 1.5 g is dissolved in the glycerol of 70 ml, using two ways Deca：（1）Make
The solution is dropwise instilled in impregnation liquid with the speed of 0.5 ml/s with dropper；（2）Using beaker by the solution of 70 ml in 4s
All pour in impregnation liquid.Persistently stirred using magneton or stirring paddle during Deca.
4th, stand and roasting：The mixed liquor obtained after stirring is stood and filter after 1.5 h, in noble gases N2Under atmosphere in
150 oRoasting in C temperature ranges is dried, that is, obtain denitrfying agent granule.
Distinguished as shown in Figure 1 and Figure 2 using the denitrfying agent granule SEM electromicroscopic photographs that two kinds of Deca modes are prepared.From figure
In understand, active component shown in Fig. 1 carrier particle exterior surface load it is more homogeneous, particle diameter is less；And the load shown in Fig. 2
It is very big in the active component granularity of denitrfying agent particle exterior surface, reduce desulphurizing activated.
Embodiment 2
The invention provides one kind removes NO from flue gasxDenitrfying agent preparation method, comprise the following steps：
1st, prepare reactant liquor：Take 2.0 g calcium hydroxide particles and during 0.7 g Yttrium trihydroxide granules are put in beaker plus 30 ml
Glycerol dissolves, and is placed in ultrasonic generator the ultrasound 1h under 300 W ultrasonic power conditions.
2nd, impregnate：After calcium hydroxide and Yttrium trihydroxide are completely dissolved, 10g particle diameters are poured in 0.6-300 μ ms
Titanium dioxide granule is equally placed in ultrasonic generator the ultrasound 0.5 under 300 W ultrasonic power conditions as inert carrier
h。
3rd, dropwise reaction liquid：The thioaldehydes for taking 3.5 g is dissolved in the glycerol of 70 ml, by the solution with the speed of 1.5 ml/s
Rate is dropwise instilled in the inert carrier impregnated of aqua calcises, is persistently stirred using magneton or stirring paddle during Deca.
4th, stand and roasting：2.5 h are stood under the conditions of the mixed liquor obtained after stirring is placed in lucifuge, is filtered, in inertia
Gas N2In 200 under atmosphereoRoasting in C temperature ranges is dried, that is, obtain denitrfying agent granule.
In Example 1 and Example 2 of the present invention experiment the denitration efficiency figure that embodies as shown in figure 3, as can be seen from Figure 3, two
The denitration rate that gained denitrfying agent granule is prepared in embodiment is above 99.0% before denitration during 30 min, and embodiment 1 is made
Standby denitrfying agent activity is slightly above denitrfying agent prepared by embodiment 2.
Embodiment 3
As shown in figure 4, a kind of device for carrying out denitrating flue gas using prepared denitrfying agent being related in the present invention includes
Screw(-type) feeder 1, regeneration reactor 2, tedge 3, cyclone separator 4, the first pressure fan 5, the second pressure fan 6, denitration reaction
Device 7 and material returning device 8.
Preparation-obtained denitrfying agent granule Jing screw(-type) feeders 1 are entered from 2 front lower portion of regeneration reactor, Jing gasification synthesis
Gas carries up into tedge 3, has an interface transition to connect between tedge 3 and regeneration reactor 2；Gasification synthesis gas are dragged
Drag denitrfying agent granule to flow out in the outlet of tedge 3, gas solid separation is realized into cyclone separator 4.Gas phase is from cyclone separator 4
Emptying is flowed out in portion's outlet.Separator dipleg is longer, extends downwardly into inside Benitration reactor 7, and denitrfying agent granule is fallen into by dipleg
Benitration reactor 7.
Benitration reactor is a multicell bubbling bed reactor.After flue gas containing NOx enters reactor, and it is deposited under reactor
The denitrfying agent particle reaction in portion, the gas after denitration are escaped from the outlet on reactor top, denitrfying agent granule blowing in gas
Downstream chamber is moved to from upstream chamber under effect, is fallen in material returning device 8 from the lower part outlet of downstream chamber；Denitrfying agent granule enters returning charge
It is deposited in after device above distribution grid, particle layers are higher than highly material returning device side exit, and granule can under gravity from returning charge
The side exit of device flows out.Side exit connects an inclined dipleg, and the dipleg other end accesses regeneration reactor, denitrfying agent granule
Regeneration reactor is returned by dipleg to regenerate again, continuous application is realized.
Present invention also offers the application process of prepared denitrfying agent denitration from flue gas, can adopt following technical proposals
It is achieved：
（1）The denitrfying agent granule for preparing gained is sent into into Benitration reactor, nitrogenous flue gas by screw(-type) feeder（It is main into
It is divided into N2、O2、CO2, NO and NO2）Send into from the gas approach of Benitration reactor bottom.Flue gas from below Benitration reactor upwards
Flowing, contacts and reacts with the denitrfying agent granule for being added, and reaction temperature is controlled at 300-800 DEG C.Denitrfying agent can be captured
NOx in flue gas（Including NO and NO2）Oxygen in gas molecule is simultaneously reduced to N2.Active component in denitrfying agent is lost gradually
It is living.As in Benitration reactor, operating gas velocity is relatively low, the denitrfying agent granule of inactivation enters the returning charge valve of reactor bottom, by returning
Material valve loosens the synergism of wind and fluidized wind, flows out Jing material returning devices from lower part outlet and enters regeneration reactor；
（2）Reacted denitrfying agent meets with the gasification synthesis gas being passed through from reactor bottom into after regeneration reactor,
In regeneration reactor, synthesis gas flow velocity upwards is far above Benitration reactor.Denitrfying agent granule is carried by gasification synthesis gas, on Jing
Discharge from the horizontal flue of reactor head after riser.CO, H while granule is carried and in synthesis gas2Composition is not still
Disconnected reaction, by the oxygen evolution captured in the NOx gases from flue gas to CO and H2, denitrfying agent realization regeneration, CO and H2Composition also with
Be converted into CO2And H2O.Reacted gaseous product and solid particle realize gas solid separation after flowing through cyclone dust extractor, after regeneration
Denitrfying agent granule return Benitration reactor, CO2And H2O is then discharged from cyclone dust extractor top.The decline of cyclone separator bottom
In the bed that pipe is led directly in Benitration reactor, the denitrfying agent granule for separating in Benitration reactor carries out flue gas again and takes off
Nitre reacts.Realize the uninterrupted recycling of denitrfying agent.
Above example is only illustrating technical scheme, rather than is limited；Although with reference to aforementioned reality
Example has been described in detail to the present invention, to those skilled in the art, still can be to previous embodiment institute
The technical scheme of record is modified, or carries out equivalent to which part technical characteristic；And these modifications or replacement, and
The spirit and scope of the essence disengaging claimed technical solution of the invention of appropriate technical solution are not made.
Claims (10)
1. a kind of preparation method of the denitrfying agent of the denitration from flue gas, it is characterised in that it comprises the following steps：
（1）Prepare reactant liquor：Calcium hydroxide and Yttrium trihydroxide granule are dissolved in polyhydric alcohol simultaneously and obtain the first solution, first is molten
In liquid, Y/Ca mol ratios are 0.1-2, and in solution, the molar concentration sum of both Y-ion, Ca ions is 0.01-10 mol/L, will
First solution is placed in ultrasound 0.5-5 h under 200-600 W ultrasound conditions and is completely dissolved to granule；
（2）Dipping：First solution is added in inert carrier particle, the ultrasound under the ultrasonic power conditions of 200-600 W
Effects of ion is made to be evenly distributed in carrier particle exterior surface；
（3）Dropwise dropwise reaction liquid：Under 200-600 W ultrasound conditions, the use of polyhydric alcohol is that solvent dissolving sulphur source obtains second
Solution；Second solution is added dropwise over into step（2）In solution after the completion of impregnating, persistently stir during Deca, promote
Enter the formation of sulfide in solution；
（4）Stand and roasting：By step（3）The mixed liquor of acquisition stands 2-8 h and filters, by solid particle in noble gases N2Atmosphere
In 50-300 under enclosingoRoasting in C temperature ranges is dried, that is, obtain being loaded with the denitrfying agent granule of Ca-S-Y active components.
2. the preparation method of denitrfying agent according to claim 1, it is characterised in that：The step（1）Middle calcium hydroxide and
Yttrium trihydroxide particle diameter is in 0.5-500 μ ms.
3. the preparation method of denitrfying agent according to claim 1, it is characterised in that：The step（1）Middle polyhydric alcohol is third
One or more in triol, ethylene glycol or butanediol.
4. the preparation method of denitrfying agent according to claim 1, it is characterised in that：The step（2）Middle inert carrier is
Particle diameter one or more in the titanium dioxide in 0.6-300 μ ms, attapulgite clay or montmorillonite.
5. the preparation method of denitrfying agent according to claim 1, it is characterised in that：The step（2）In dipping process, the
The volume of one solution/inert carrier particle volume ratio is in the range of 1.5-10.
6. the preparation method of denitrfying agent according to claim 1, it is characterised in that：The step（3）Middle sulphur source be thioaldehydes,
One or more in thioketone, thiocarboxylic acid, thiourea or thioamides.
7. the preparation method of denitrfying agent according to claim 1, it is characterised in that：The step（3）In the second solution with
The speed of 0.2-10 ml/s dropwise instills step（2）In solution after the completion of impregnating.
8. denitrfying agent obtained in the preparation method according to any one of claim 1-7.
9. denitrfying agent according to claim 8, it is characterised in that：The active component of the denitrfying agent is CaxSx+3yY2y。
10. the denitrfying agent described in claim 8 is in the application for the denitration from flue gas, it is characterised in that it includes following step
Suddenly：
（1）The denitrfying agent sends into Benitration reactor by screw(-type) feeder, and flue gas is entered from Benitration reactor bottom inlet, cigarette
Gas is flowed up from below Benitration reactor, is contacted and is reacted with the denitrfying agent for being added, and reaction temperature is controlled in 300-
800℃；The NOx gas reductions contained in flue gas are N by the reaction2, the active component in denitrfying agent inactivated gradually, inactivation it is de-
Nitre agent is flowed out Jing material returning devices from lower part outlet and enters regeneration reactor；
（2）Denitrfying agent meets with the gasification synthesis gas being passed through from reactor bottom into after regeneration reactor, the gas of high temperature and high speed
It is combined to gas to carry denitrfying agent, denitrfying agent is regenerated after being reduced by gasification synthesis gas while being carried, from regeneration reactor
Outlet expellant gas and solid particle flow through cyclone separator and realize gas solid separation, and the denitrfying agent after regeneration returns denitration reaction
Device.
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| CN102989466A (en) * | 2012-12-27 | 2013-03-27 | 北京石油化工学院 | Flue gas desulfurization and denitrification catalyst for reduction method and applications of catalyst |
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| EP2408536B1 (en) * | 2009-03-20 | 2014-07-30 | Basf Se | Process for separating acid gases using amine impregnated metal organic frameworks |
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|---|---|---|---|---|
| EP2408536B1 (en) * | 2009-03-20 | 2014-07-30 | Basf Se | Process for separating acid gases using amine impregnated metal organic frameworks |
| CN103007923A (en) * | 2012-12-13 | 2013-04-03 | 成都东方凯特瑞环保催化剂有限责任公司 | SCR (Selective Catalytic Reduction) denitration catalyst and preparation method thereof |
| CN102989466A (en) * | 2012-12-27 | 2013-03-27 | 北京石油化工学院 | Flue gas desulfurization and denitrification catalyst for reduction method and applications of catalyst |
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| CN105107368A (en) | 2015-12-02 |
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