CN204447733U - The adsorption plant of desulfurization and denitrification integral purification - Google Patents
The adsorption plant of desulfurization and denitrification integral purification Download PDFInfo
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- CN204447733U CN204447733U CN201520044436.0U CN201520044436U CN204447733U CN 204447733 U CN204447733 U CN 204447733U CN 201520044436 U CN201520044436 U CN 201520044436U CN 204447733 U CN204447733 U CN 204447733U
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- reaction tower
- desulfurization
- adsorbent
- powder storehouse
- absorbent preparation
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Abstract
The adsorption plant of desulfurization and denitrification integral purification of the present utility model, it is characterized in that: comprise absorbent preparation case and reaction tower, absorbent preparation case is by the top of slurry supply pump and pipeline coupled reaction tower, conveying adsorbent slurries, the entrance of absorbent preparation case connects water inlet pipe, active carbocoal powder storehouse, ferric oxide powder storehouse and vanadic anhydride powder storehouse respectively.The beneficial effects of the utility model are: 1. sulphur nitre removal efficiency is high, can remove the pollutants such as flue dust simultaneously, also have fume treatment flow process simple, and water consumption is few, does not need large-scale drain treatment apparatus; 2. adsorbent wide material sources, cheap, and reusable edible; 3. technological process is simple, and operation is easy, adapts to strong to boiler load change; 4. reaction tower and regenerator volume little, reduce floor space, also can split design, be both applicable to old repowering, be again suitable for new power plant construction.
Description
Technical field
The present invention relates to adsorbent and the adsorption plant of the purification of a kind of desulfurization and denitrification integral.
Background technology
Industrialization SO
2/ NO
xcombined removal technique adopts high-performance lime/lime stone flue gas desulfurization (FGD) system to remove SO
2nO_x removal is carried out with by SCR technique.This technique can remove the SO of more than 90%
2with more than 80% NO
x.But the subject matter of this process integration is the SO of in flue gas 0.2% ~ 2%
2be oxidized to SO
3, and SO
3caSO is generated with free CaO and ammonia react
4cause catalyst surface fouling with ammonium salt, reduce SCR denitration efficiency, blocking and the corrosion of air preheater can be increased simultaneously.The situation of carbon based material separately for desulphurization denitration is generally little, because find in continuous experimental exploring process, by by carbon based material modification, greatly can improve the performance of desulphurization denitration.Metal oxide is used for this catalyst and achieves very considerable progress.
Integrated gasification combined cycle for power generation (IGCC) is a high efficiency, oligosaprobic coal-fired power generator set, and it can not only meet increasingly strict environmental protection requirement, and can significantly improve generating efficiency.Solid by-product in IGCC system is the product of the not completely pyrolysis of coal after fast pyrogenation, not only containing abundant oxygen element and protium in this solid product (semicoke), physical property and active carbon are very similar, all there is abundant surface texture and hole, become a kind of Novel carbon sill of alternative active carbon.According to thermodynamic analysis, di-iron trioxide has curability in 400K-1600K temperature range, and in this temperature range, the Free enthalpy change of di-iron trioxide and sulfur dioxide reaction is negative value, shows that reaction can be carried out automatically.Data is had to show: the desulphurization reaction below 723K temperature is irreversible reaction, and theoretical desulfurization degree is close to 100%.By the V of difference amount
2o
5load effectively can improve the efficiency of single semicoke desulphurization denitration in semicoke, and it mainly comes from V
2o
5the generating rate of intermediate product can be promoted, thus increase denitrification efficiency.
Summary of the invention
The present invention, for making up the deficiencies in the prior art, provides adsorbent and the adsorption plant of the desulfurization and denitrification integral purification that a kind of denitrification efficiency is high, handling process simple, sorbent circulation utilizes, price is low.
The present invention is achieved by the following technical solutions:
The adsorption plant of desulfurization and denitrification integral purification of the present invention, it is characterized in that: comprise absorbent preparation case and reaction tower, absorbent preparation case is by the top of slurry supply pump and pipeline coupled reaction tower, conveying adsorbent slurries, the entrance of absorbent preparation case connects water inlet pipe, active carbocoal powder storehouse, ferric oxide powder storehouse and vanadic anhydride powder storehouse respectively.
Reaction tower bottom is connected regeneration case by pneumatic conveyer with pipeline, the adsorbent powder after conveying uses, and regeneration case is connected absorbent preparation case by pipeline with pneumatic conveyer, the adsorbent powder after conveying activation.
Reaction tower is provided with the soot blower for blowing the absorbent powder after use.
Be provided with resistant to elevated temperatures quartz plate in reaction tower, the absorbent powder fallen after sprinkling is laid on quartz plate, make the flue gas that passes through by after quartz plate with sorbent reactions.
Be provided with the atomizer for spraying adsorbent slurries in reaction tower, water inlet pipe, semi-coke powder storehouse, ferric oxide powder storehouse and vanadic anhydride powder storehouse are respectively equipped with valve.
The method of flue gas desulfurization and denitrification of the present invention, is characterized in that: comprise the following steps: semicoke, di-iron trioxide, vanadic anhydride respectively with powder-form mixing, and add ammoniacal liquor, after utilizing agitator to stir 12h, make adsorbent slurries; Flue gas enters bottom reaction tower, utilize slurry supply pump that high concentration adsorbent slurries in absorbent preparation case are transported to the top of reaction tower and spray in reaction tower, sulfur dioxide in ammoniacal liquor and flue gas and reaction of nitrogen oxides, flue-gas temperature is utilized to dry adsorbent slurries, become Powdered, drop on quartz plate; After absorbent powder removal efficiency reduces, adopt soot blower and pneumatic conveyer that the adsorbent in reaction tower is sent into regeneration case, in regeneration case after high-temperature process, semicoke activity recovery, then utilize pneumatic conveyer to send absorbent preparation case back to by pipeline, recycle; Neat stress after purification is discharged from reaction tower top.Be discharged in air.Water inlet pipe is for adding ammoniacal liquor and fresh water (FW).
The invention has the beneficial effects as follows:
1. sulphur nitre removal efficiency is high, can remove the pollutants such as flue dust simultaneously, also has fume treatment flow process simple, and water consumption is few, does not need large-scale drain treatment apparatus; 2. adsorbent wide material sources, cheap, and reusable edible; This adsorbent, originally as Powdered, so can not there is serious powder phenomenon-tion in desulphurization denitration process, can not affect its performance.3. technological process is simple, and operation is easy, adapts to strong to boiler load change; 4. reaction tower and regenerator volume little, reduce floor space, also can split design, be both applicable to old repowering, be again suitable for new power plant construction.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
In figure: 1 plant area's fresh water (FW), 2 semi-coke powder storehouses, 3 ferric oxide powder storehouses, 4 vanadic anhydride powder storehouses, 5 absorbent preparation casees, 6 slurry supply pumps, 7 reaction towers, 8 former flue gases, 9 neat stress, 10 regeneration casees, 11 pneumatic conveyers, 12 pneumatic conveyers.
Detailed description of the invention
Accompanying drawing is a kind of specific embodiment of the present invention.
The adsorption plant of desulfurization and denitrification integral purification of the present invention, comprise absorbent preparation case 5 and reaction tower 7, absorbent preparation case passes through the top of slurry supply pump 6 and pipeline coupled reaction tower, conveying adsorbent slurries, the entrance of absorbent preparation case connects water inlet pipe 1, semi-coke powder storehouse 2, ferric oxide powder storehouse 3 and vanadic anhydride powder storehouse 4 respectively.
Reaction tower bottom is connected regeneration case by pneumatic conveyer 12 with pipeline, adsorbent powder after conveying uses, regeneration case is connected absorbent preparation case by pipeline with pneumatic conveyer 11, adsorbent powder after conveying activation, reaction tower is provided with the soot blower for blowing the absorbent powder after use.
Be provided with resistant to elevated temperatures quartz plate in reaction tower, the absorbent powder fallen after sprinkling is laid on quartz plate, make the flue gas that passes through by after quartz plate with sorbent reactions.
Be provided with the atomizer for spraying adsorbent slurries in reaction tower, water inlet pipe 1, semi-coke powder storehouse 2, ferric oxide powder storehouse 3 and vanadic anhydride powder storehouse 4 are respectively equipped with valve.
The method of flue gas desulfurization and denitrification of the present invention, comprises the following steps: semicoke, di-iron trioxide, vanadic anhydride, respectively with powder-form, mix, and add ammoniacal liquor in absorbent preparation case 5, after utilizing agitator to stir 12h, makes adsorbent slurries; Former flue gas 8 enters bottom reaction tower 7, utilize centrifugal pump (i.e. slurry supply pump 6) to spray in reaction tower 7 by adsorbent slurries, the sulfur dioxide in ammoniacal liquor and flue gas and reaction of nitrogen oxides, utilize flue-gas temperature to dry adsorbent slurries, become Powdered, drop on quartz plate; After absorbent powder removal efficiency reduces, adopt soot blower and pneumatic conveyer 12 that the adsorbent in reaction tower is sent into regeneration case 10, in regeneration case after high-temperature process, semicoke activity recovery, then utilize pneumatic conveyer 11 to send absorbent preparation case 5 back to by pipeline, recycle.Neat stress 9 after purification is discharged from reaction tower top, is discharged in air.Water inlet pipe 1 is for adding ammoniacal liquor and fresh water (FW).
The present invention's select the method for solution co-precipitation to prepare implantation multi-element metal oxide adsorbent that active carbocoal is carrier.Desulphurization denitration adsorbent adopts di-iron trioxide and the vanadic anhydride of semicoke load different proportion, is prepared into powdered granule, with the sulfur dioxide in flue gas and reaction of nitrogen oxides in reaction tower.This technique mainly comprises: absorbent preparation case, the di-iron trioxide of different proportion and vanadic anhydride are implanted in semicoke by adding ammoniacal liquor by semicoke, slurry supply pump is utilized to spray in reaction tower by the slurries prepared, flue-gas temperature is utilized to dry slurries, become Powdered, fall on quartz plate, and prevent These powdered adsorbents from coming off; After adsorbent removal efficiency reduces, the adsorbent in replaceable reaction tower, the adsorbent changed, after high-temperature process, can reuse.
Operation principle is: the major pollutants in former flue gas are sulfur dioxide and nitrogen oxide.The semicoke adopted in the present invention has relatively advanced pore structure and very large specific area, and itself comprises physical absorption and chemisorbed to the absorption of sulfur dioxide.As dry-steam in flue gas and O
2when existing, mainly physical absorption occurs, adsorbance is less.When containing sufficient water vapor and O in flue gas
2, semicoke absorption sulfur dioxide in flue gas is a chemisorbed and the simultaneous process of physical absorption.In active carbocoal, add metal oxide mainly come from vanadic anhydride and di-iron trioxide to the catalytic oxidation of sulfur dioxide in flue gas and nitrogen oxide and adsorption and oxidation effect, the metal oxide of load can promote the generating rate of intermediate product, reduce consuming of active carbocoal itself, thus strengthen denitrification efficiency.This adsorbent this as Powdered, so serious powder phenomenon-tion can not be there is in desulphurization denitration process.
Claims (5)
1. the adsorption plant of a desulfurization and denitrification integral purification, it is characterized in that: comprise absorbent preparation case and reaction tower, absorbent preparation case is by the top of slurry supply pump and pipeline coupled reaction tower, conveying adsorbent slurries, the entrance of absorbent preparation case connects water inlet pipe, active carbocoal powder storehouse, ferric oxide powder storehouse and vanadic anhydride powder storehouse respectively.
2. the adsorption plant of desulfurization and denitrification integral purification according to claim 1, it is characterized in that: reaction tower bottom is connected regeneration case by pneumatic conveyer with pipeline, adsorbent powder after conveying uses, regeneration case is connected absorbent preparation case by pipeline with pneumatic conveyer, the adsorbent powder after conveying activation.
3. the adsorption plant of desulfurization and denitrification integral purification according to claim 1 and 2, is characterized in that: be provided with resistant to elevated temperatures quartz plate in reaction tower.
4. the adsorption plant of desulfurization and denitrification integral purification according to claim 1 and 2, it is characterized in that: be provided with the atomizer for spraying adsorbent slurries in reaction tower, water inlet pipe, semi-coke powder storehouse, ferric oxide powder storehouse and vanadic anhydride powder storehouse are respectively equipped with valve.
5. the adsorption plant of desulfurization and denitrification integral purification according to claim 1 and 2, is characterized in that: reaction tower is provided with the soot blower for blowing the absorbent powder after use.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520044436.0U CN204447733U (en) | 2015-01-22 | 2015-01-22 | The adsorption plant of desulfurization and denitrification integral purification |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520044436.0U CN204447733U (en) | 2015-01-22 | 2015-01-22 | The adsorption plant of desulfurization and denitrification integral purification |
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| Publication Number | Publication Date |
|---|---|
| CN204447733U true CN204447733U (en) | 2015-07-08 |
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ID=53654683
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520044436.0U Expired - Fee Related CN204447733U (en) | 2015-01-22 | 2015-01-22 | The adsorption plant of desulfurization and denitrification integral purification |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104667735A (en) * | 2015-01-22 | 2015-06-03 | 山东台鹰环境工程有限公司 | Desulfurization and denitrification integrated purification adsorbent, adsorption equipment and adsorption method |
-
2015
- 2015-01-22 CN CN201520044436.0U patent/CN204447733U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104667735A (en) * | 2015-01-22 | 2015-06-03 | 山东台鹰环境工程有限公司 | Desulfurization and denitrification integrated purification adsorbent, adsorption equipment and adsorption method |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: Mulberry road Licheng District 250010 in Shandong city of Ji'nan province 58-3 Patentee after: Environmental Engineering Co., Ltd. Taiwan Eagle Address before: Mulberry road Licheng District 250010 in Shandong city of Ji'nan province 58-3 Patentee before: Shandong Taiying Environment Engineering Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150708 Termination date: 20190122 |