CN201823475U - Calcium-based CO2 absorbing and regenerating device - Google Patents
Calcium-based CO2 absorbing and regenerating device Download PDFInfo
- Publication number
- CN201823475U CN201823475U CN2010205794870U CN201020579487U CN201823475U CN 201823475 U CN201823475 U CN 201823475U CN 2010205794870 U CN2010205794870 U CN 2010205794870U CN 201020579487 U CN201020579487 U CN 201020579487U CN 201823475 U CN201823475 U CN 201823475U
- Authority
- CN
- China
- Prior art keywords
- calcium
- links
- flue gas
- separator
- calcium oxide
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/151—Reduction of greenhouse gas [GHG] emissions, e.g. CO2
Landscapes
- Treating Waste Gases (AREA)
Abstract
The utility model discloses a calcium-based CO2 absorbing and regenerating device used in the technical field of a coal-fired boiler. The calcium-based CO2 absorbing and regenerating device comprises an absorption reactor, a calcium carbonate separator, a regeneration reactor, a calcium oxide separator, a calcium oxide grinder, a flue gas heat exchanger, a calcium carbonate heat exchanger, a heater, pipelines and valves. In the regeneration reactor, CaO in a calcium-based absorbent absorbs low-concentration CO2 of mixed flue gas escaping from a boiler so as to generate CaCO3. Pure CaCO3 is separated from the calcium oxide separator, transmitted to the regeneration reactor, and then heated and decomposed to generate CaO and high-concentration CO2; the generated high-concentration CO2 (98%) is collected for other industrial applications. After heated by the flue gas heat exchanger and the calcium carbonate heat exchanger, the separated pure CaCO3 is transmitted into the regeneration reactor for realizing the cyclic utilization. The calcium-based CO2 absorbing and regenerating device has the advantages of reasonable structure, low energy consumption and good environment-friendly property.
Description
Technical field:
The utility model relates to a kind of calcium base CO
2Absorption and regenerating unit and technological process and method are used in coal-burning boiler and need reduce the CO2 emission occasion.
Background technology:
Global warming mainly is because with CO
2Be that the main a large amount of dischargings of greenhouse gases cause the aggravation of global greenhouse effect to cause, control and minimizing CO
2Discharge capacity have important function for the influence that solves atmosphere greenhouse effects and global warming.China is CO
2Discharging big country, discharge capacity accounts for world CO
21/5 of total emission volumn, wherein most of CO
2Produce by fire coal.In quite long period in future, China can not change based on the energy general layout of coal, and the coal consumption amount is sustainable growth, is in the main production of energy with fossil fuel, CO
2Discharge capacity account for the caused CO of human comings and goings
2More than 70% of total emission volumn is CO
2Maximum single-point fixed discharge, control and slow down CO in coal-fired the production
2Discharging have significant effect for solving atmosphere greenhouse effects and global warming, therefore separation of C O from the tail gas of coal-burning boiler
2Be very important, from burning and gas-exhausting, separate and reclaim CO
2Technology become very important.
Have based on this, make the utility model.
The utility model content:
At above-mentioned technical problem to be solved, main purpose of the present utility model provides a kind of rational in infrastructure, applied widely, energy consumption is low and the feature of environmental protection is good calcium base CO
2Absorb and regenerating unit.
The technical scheme that the utility model is taked is as follows: a kind of calcium base CO
2Absorb and regenerating unit, it is characterized in that: comprise the flue gas heat exchange device, the flue gas heat exchange device links to each other with the smoke discharge pipe of boiler, absorption reactor thermally links to each other with the flue gas heat exchange device, in absorption reactor thermally, be provided with calcium-base absorbing agent, the calcium carbonate heat exchanger links to each other with absorption reactor thermally, the calcium oxide separator links to each other with the calcium carbonate heat exchanger, the flue gas heat exchange device links to each other with the calcium oxide separator, the calcium carbonate heat exchanger links to each other with the flue gas heat exchange device, regeneration reactor links to each other with the calcium carbonate heat exchanger, is provided with heater in regeneration reactor, is provided with flue gas and collects mouth above regeneration reactor, the calcium carbonate separator links to each other with regeneration reactor, the calcium oxide grinder links to each other with the calcium carbonate separator, and absorption reactor thermally links to each other with the calcium oxide grinder, is provided with discharge gate on the calcium oxide grinder.
Preferably: also be provided with calcium oxide charging aperture and calcium acetate charging aperture, the calcium oxide charging aperture links to each other with absorption reactor thermally respectively with the calcium acetate charging aperture.
Preferably: absorption reactor thermally links to each other with the calcium oxide separator by blow-down pipe, makes the unreacted calcium oxide that separates in the calcium oxide separator continue to be recycled in the absorption reactor thermally and reacts.
Preferably: regeneration reactor links to each other by the drain of valve with the calcium carbonate separator, calcium carbonate after the separation is recycled to continues reaction in the regeneration reactor.
Operation principle of the present utility model is as follows:
CaO in the calcium-base absorbing agent absorbs in absorption reactor thermally from the boiler low concentration CO the mixed flue gas that comes out
2, generate CaCO
3Gas-solid mixture is isolated pure CaCO in the calcium oxide separator
3, unreacting mixture is got back to absorption reactor thermally, residual air emptying, isolated pure CaCO
3Deliver in the regeneration reactor after flue gas heat exchange device, the heating of calcium carbonate heat exchanger, heating makes it decompose the CO that generates CaO and high concentration
2, to the high concentration CO that generates
2Collect, the CaO of generation sends absorption reactor thermally once more back to, finishes a working cycles.Lime stone class natural carbonate relatively is fit to be CO
2Absorbent, but CO in the natural limestone burning forging product carbonation
2Capture ability is decayed with the increase of circulation, with acetic acid solution lime stone is carried out modifiedly, and the product calcium acetate after modified as calcium-base absorbing agent, is recovered its activity, and calcining afterwards CaO has formed a large amount of holes, and this structure helps CO
2Carbonation reaction with CaO.
The beneficial effects of the utility model are as follows:
1, adopt CaO in the calcium-base absorbing agent in absorption reactor thermally, to absorb from the boiler low concentration CO the mixed flue gas that comes out
2, generate CaCO
3And from the calcium oxide separator, isolate pure CaCO
3, to deliver in the regeneration reactor, heating makes it decompose the CO that generates CaO and high concentration
2, to the high concentration CO that generates
2(98%) collects,, thereby reduced CO effectively for other commercial Application
2Discharging.
2, it is modified to adopt acetic acid solution that lime stone is carried out, the product calcium acetate after modified as CO
2Absorbent, the activity of recovery calcium-base absorbing agent.
3, carry out heat recovery and utilization again by flue gas heat exchange device, calcium carbonate heat exchanger etc., saved the energy effectively.
4, absorption reactor thermally and regeneration reactor are controlled by valve, have realized the recycling of system effectively.
Below in conjunction with accompanying drawing 1 and specific embodiment the utility model is further described in detail.
Description of drawings:
Fig. 1 is calcium base CO of the present utility model
2Absorb structural representation with regenerating unit.
The specific embodiment:
As shown in Figure 1, calcium base CO of the present utility model
2Absorb and regenerating unit, comprise flue gas heat exchange device 6, flue gas heat exchange device 6 links to each other with the smoke discharge pipe 13 of boiler, absorption reactor thermally 1 links to each other with flue gas heat exchange device 6 by valve 15, calcium oxide charging aperture 11 links to each other with absorption reactor thermally 1 respectively with calcium acetate charging aperture 12, in absorption reactor thermally 1, be provided with calcium-base absorbing agent, be used for absorbing the CO of mixed flue gas
2Calcium carbonate heat exchanger 7 links to each other with absorption reactor thermally 1 by valve 9, calcium carbonate heat exchanger 7 is used for absorbing the heat that absorption reactor thermally 1 reaction is produced, calcium oxide separator 3 links to each other with calcium carbonate heat exchanger 7, calcium oxide separator 3 is mainly used in the small amounts calcium that is mingled with in the calcium carbonate that will generate to be separated, absorption reactor thermally 1 links to each other with calcium oxide separator 3 by blow-down pipe, making the unreacted calcium oxide that separates in the calcium oxide separator 3 continue to be recycled in the absorption reactor thermally 1 reacts, flue gas heat exchange device 6 links to each other with calcium oxide separator 3, calcium carbonate heat exchanger 7 links to each other with flue gas heat exchange device 6, regeneration reactor 2 links to each other with calcium carbonate heat exchanger 7, in regeneration reactor 2, be provided with heater 8, above regeneration reactor 2, be provided with flue gas and collect mouth 14, the charging aperture of calcium carbonate separator 4 links to each other with regeneration reactor 2 by valve 17, calcium carbonate separator 4 is mainly used in a small amount of calcium carbonate that is mingled with in the calcium oxide that will generate to be separated, regeneration reactor 2 links to each other with the drain of calcium carbonate separator 4 by valve 18, calcium carbonate after the separation is recycled to continues reaction in the regeneration reactor 2, calcium oxide grinder 5 links to each other with calcium carbonate separator 4, after grinding, the calcium oxide that is used for reclaiming is delivered to absorption reactor thermally 1 reuse, absorption reactor thermally 1 links to each other with calcium oxide grinder 5 by valve 16, on calcium oxide grinder 5, be provided with discharge gate 10, be used for the calcium oxide discharging of will scrap.
Operation principle of the present utility model is as follows:
The mixed flue gas that comes out from boiler enters into the flue gas heat exchange device through smoke discharge pipe 13, enters absorption reactor thermally 1 after heat exchange, and the CaO in the calcium-base absorbing agent absorbs low concentration CO in absorption reactor thermally 1
2, generate CaCO
3Reaction equation is: CaO+CO
2-＞CaCO3+178Kj/mol.The gas-solid mixture that comes out from absorption reactor thermally 1 is through isolating pure CaCO calcium oxide separator 3 behind the calcium carbonate heat exchanger 7
3, unreacted mixture is got back to absorption reactor thermally 1 and is continued reaction, and residual air is from the 3 top emptying of calcium oxide separator, isolated pure CaCO
3After flue gas heat exchange device 6,7 heating of calcium carbonate heat exchanger, deliver in the regeneration reactor 2, make it decompose the CO that generates CaO and high concentration by heater 8 heating
2, reaction equation is: CaCO
3---＞CaO+CO
2-178Kj/mol.And high concentration CO to generating
2(98%) collecting mouth 14 from flue gas collects, the CaO that generates separates through calcium carbonate separator 4, unreacted calcium carbonate is recycled to the regeneration reactor reaction, calcium oxide after the separation is delivered in the calcium oxide grinder 5 and grinds to form powder, and then send back in the absorption reactor thermally 1 and use, in order to ensure recycling of whole system, new CaO adds from charging aperture 11, and the CaO that scraps emits from floss hole 10.
Lime stone class natural carbonate relatively is fit to be CO
2Absorbent, but CO in the natural limestone burning forging product carbonation
2Capture ability with the circulation increase decay, with acetic acid solution lime stone is carried out modified, the product calcium acetate after modified as CO
2Absorbent recovers its activity.Calcium acetate adds from charging aperture 12, and the reaction equation in the calcination process is: Ca (CH
3CO
2)
2---＞CaCO
3+ CH
3COCH
3, therefore calcining back CaO has formed a large amount of holes, and this structure helps CO
2Carbonation reaction with CaO.
Absorption reactor thermally 1 of the present utility model and regeneration reactor 2 all have valve 9 controls, absorption and recovery time need 10-20 minute, can guarantee that 10-20 divides the reaction time by in absorption reactor thermally 1 and regeneration reactor 2, helical blade being set, finish a working cycles.
Claims (4)
1. calcium base CO
2Absorb and regenerating unit, it is characterized in that: comprise the flue gas heat exchange device, the flue gas heat exchange device links to each other with the smoke discharge pipe of boiler, absorption reactor thermally links to each other with the flue gas heat exchange device, in absorption reactor thermally, be provided with calcium-base absorbing agent, the calcium carbonate heat exchanger links to each other with absorption reactor thermally, the calcium oxide separator links to each other with the calcium carbonate heat exchanger, the flue gas heat exchange device links to each other with the calcium oxide separator, the calcium carbonate heat exchanger links to each other with the flue gas heat exchange device, regeneration reactor links to each other with the calcium carbonate heat exchanger, is provided with heater in regeneration reactor, is provided with flue gas and collects mouth above regeneration reactor, the calcium carbonate separator links to each other with regeneration reactor, the calcium oxide grinder links to each other with the calcium carbonate separator, and absorption reactor thermally links to each other with the calcium oxide grinder, is provided with discharge gate on the calcium oxide grinder.
2. a kind of calcium base CO according to claim 1
2Absorb and regenerating unit, it is characterized in that: also be provided with calcium oxide charging aperture and calcium acetate charging aperture, the calcium oxide charging aperture links to each other with absorption reactor thermally respectively with the calcium acetate charging aperture.
3. a kind of calcium base CO according to claim 1
2Absorb and regenerating unit, it is characterized in that: absorption reactor thermally links to each other with the calcium oxide separator by blow-down pipe.
4. a kind of calcium base CO according to claim 1
2Absorb and regenerating unit, it is characterized in that: regeneration reactor links to each other by the drain of valve with the calcium carbonate separator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205794870U CN201823475U (en) | 2010-10-28 | 2010-10-28 | Calcium-based CO2 absorbing and regenerating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205794870U CN201823475U (en) | 2010-10-28 | 2010-10-28 | Calcium-based CO2 absorbing and regenerating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201823475U true CN201823475U (en) | 2011-05-11 |
Family
ID=43962036
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205794870U Expired - Lifetime CN201823475U (en) | 2010-10-28 | 2010-10-28 | Calcium-based CO2 absorbing and regenerating device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201823475U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101972599A (en) * | 2010-10-28 | 2011-02-16 | 绍兴文理学院 | Calcium-based CO2 absorbing and regenerating device |
| CN105431219A (en) * | 2013-06-14 | 2016-03-23 | Zeg动力股份公司 | Method for sustainable energy production in a power plant comprising a solid oxide fuel cell |
-
2010
- 2010-10-28 CN CN2010205794870U patent/CN201823475U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101972599A (en) * | 2010-10-28 | 2011-02-16 | 绍兴文理学院 | Calcium-based CO2 absorbing and regenerating device |
| CN101972599B (en) * | 2010-10-28 | 2012-05-30 | 绍兴文理学院 | Calcium-based CO2 absorbing and regenerating device |
| CN105431219A (en) * | 2013-06-14 | 2016-03-23 | Zeg动力股份公司 | Method for sustainable energy production in a power plant comprising a solid oxide fuel cell |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101972599B (en) | Calcium-based CO2 absorbing and regenerating device | |
| WO2019105193A1 (en) | Factory, power plant, or refinery flue gas capture, conversion, and application total recycling system | |
| CN101797470B (en) | Method for circularly trapping SO2 and CO2 by using calcium-based absorbent | |
| CN101780371B (en) | Method for jointly removing carbon dioxide and sulfur dioxide from smoke | |
| CN105727729B (en) | Based on the continuous circulation carbon dioxide capture system of absorption in situ/desorption mode | |
| CN102824849B (en) | Method for reducing NOx emission in FCC (Fluid Catalytic Cracking) regeneration process | |
| CN102527225A (en) | Method for trapping carbon dioxide from smoke by renewable carbide slag | |
| CN102618349A (en) | Oxygen carrier for methane chemical looping combustion and preparation method for oxygen carrier | |
| CN102309917A (en) | Carbon dioxide catching system | |
| CN101596397A (en) | The direct mineralising partition method of non-separating carbon dioxide from smoke | |
| CA3047845A1 (en) | Removal of greenhouse gases and heavy metals from an emission stream | |
| CN103055661A (en) | Device and method for removing acidic gas from smoke at high temperature | |
| CN102815926A (en) | High-temperature calcium-based coal ash absorbent for CO2 and preparation method of high-temperature calcium-based coal ash absorbent | |
| Zhang | Absorption principle and techno-economic analysis of CO2 absorption technologies: A review | |
| CN115350575A (en) | Method for eliminating industrial flue gas atmospheric pollutants and capturing, converting and utilizing carbon dioxide | |
| CN201823475U (en) | Calcium-based CO2 absorbing and regenerating device | |
| CN100427180C (en) | Method for deacidizing low sulfur dioxide concentration by using gas produced by biomass pyrolysis | |
| CN201823474U (en) | Calcium-based CO2 regeneration furnace | |
| CN203963950U (en) | A kind of solid waste pyrolytic gasification treatment system | |
| CN101550846A (en) | A chemical looping combustion power generation process and system using landfill gas | |
| CN202803106U (en) | Device for circularly catching carbon dioxide by taking CaO as carrier | |
| CN103936543B (en) | A kind of method with acetylene synchronization gain carbon-dioxide absorbent | |
| CN217410255U (en) | System for realizing direct carbon capture of air by coupling new energy power generation | |
| CN106824094B (en) | It is a kind of to remove power-plant flue gas CO using modified gangue2System and its implementation method | |
| JP2013081873A (en) | Co2 recovery method for reactivatable solid absorbent |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20110511 Effective date of abandoning: 20120530 |