CN104888583A - Capture and absorption tower for carbon dioxide in flue gas - Google Patents
Capture and absorption tower for carbon dioxide in flue gas Download PDFInfo
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- CN104888583A CN104888583A CN201510320542.1A CN201510320542A CN104888583A CN 104888583 A CN104888583 A CN 104888583A CN 201510320542 A CN201510320542 A CN 201510320542A CN 104888583 A CN104888583 A CN 104888583A
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- tower body
- absorption tower
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Abstract
The invention discloses a capture and absorption tower for carbon dioxide in flue gas. The capture and absorption tower comprises a one-stage tower body with a flue gas inlet, a two-stage tower body with a flue gas outlet and a circulating flue for communicating the one-stage tower body with the two-stage tower body; a slurry pond is formed below the one-stage tower body and the two-stage tower body and integrally communicated with the one-stage tower body, the two-stage tower body and the circulating flue to form the absorption tower with a U-shaped section; the one-stage tower body adopts a liquid-column tower structure and is provided with a front spraying mechanism; the front spraying mechanism is connected with the slurry pond through a first circulating pump; the first circulating pump is a variable frequency pump. According to the capture and absorption tower for carbon dioxide in flue gas, the one-tower double-circulation structure is adopted, the one-stage tower body is designed to adopt the liquid column tower structure, and the spraying height of a liquid column is controlled by the front spraying mechanism through the variable frequency pump, so that investment is reduced, the occupied area is reduced, meanwhile, resistance of the absorption tower is reduced, and energy consumption of a system is effectively reduced since the variable frequency pump can adjust according to flue gas load conditions of a power plant.
Description
Technical field
The present invention relates to a kind of absorption tower, particularly a kind of smoke carbon dioxide capture absorption tower.
Background technology
The earth environment that the mankind depend on for existence in the positive serious threat of greenhouse effects, and the key of whole world reply greenhouse effects reduces greenhouse gas emission, wherein mainly reduces the CO2 emission of energy-consuming.According to EIA " world energy outlook 2013 ", coal demand amplification is that in variety of energy sources, amplification is maximum, from 2007 to the year two thousand thirty, coal demand is by rising about 64%, therefore, in the world, reducing the CO2 emission caused due to consumption of coal is one of main path controlling its total release.2009, the CO2 emissions that AND ENERGY RESOURCES CONSUMPTION IN CHINA produces exceed the U.S. became global first CO2 emission state.The situation that China's CO2 emissions comparatively fast increase, will more and more be subject to concern and the pressure of international community.In China, coal-burning power plant's CO2 emission is one of primary discharge source of greenhouse gases, and its CO2 emission accounts for 50% of China's CO2 emission total amount; And by 2010, China's Thermal generation unit was increased to 700,000,000 kilowatts, coal for power generation will reach 1,600,000,000 tons, and from 2010 years to the year two thousand twenty, national consumption of coal total amount is also by sustainable growth.Therefore, coal-burning power plant's CO2 emission is reduced most important for control China CO2 emission total amount.
At present, the technology main flow of carbon dioxide eliminating process is broadly divided into three major types: solvent absorption, membrane separation process and solid absorbent absorption method.Wherein, solvent absorption technology is the most attractive, application also the most a kind of isolation technics, and most coal-fired plant flue gas absorption unit of dioxide carbon all have employed such technology.Solvent absorption technology can also be divided into many groups, great majority are comparative maturity all, but higher energy consumption prevents the popularization of collecting carbonic anhydride technology, and the improvement on carbon trapping absorption tower reduces the important channel of coal-fired plant flue gas carbon dioxide absorption technique overall energy consumption just.
In conventional coal-fired plant flue gas carbon dioxide capture device, absorption tower adopts packed tower, built-in structured packing or dumped packing, this type of turriform have mass transfer fully, capture rate advantages of higher.But due to the relation of packing layer, the resistance on absorption tower is comparatively large, energy consumption is high and not easily regulate.Coal-burning power plant's carbon capturing device does not need very high capture rate in actual motion, generally all controls about 90%, and reduce energy consumption, simplify regulation and control be the problem that carbon capturing device need solve always.Therefore, develop a kind of low energy consumption, the easy collecting carbonic anhydride absorption tower regulated seems very urgent and important.
Summary of the invention
In view of this, the object of the present invention is to provide a kind of smoke carbon dioxide capture absorption tower that effectively can reduce energy consumption, simplify regulation and control.
Smoke carbon dioxide capture absorption tower of the present invention, comprise the one-level tower body being provided with gas approach, the secondary tower body being provided with exhanst gas outlet and be communicated with the cycle flue of described one-level tower body and secondary tower body, slurry pool is formed at the below of described one-level tower body and secondary tower body and is integrally formed U-shaped absorption tower, cross section with one-level tower body and secondary tower body and cycle flue UNICOM; Described one-level tower body is liquid column tower structure and is provided with front spraying mechanism, and described front spraying mechanism is connected with slurry pool by the first circulating pump, and described first circulating pump is variable frequency pump.
Further, described front spraying mechanism comprises front gunite layer and is connected to the front shower nozzle of front gunite layer, and the spout of described front shower nozzle is arranged upward; Described front gunite layer is connected with slurry pool by front circulating line, and described first circulating pump is located between front circulating line.
Further, gunite layer before described in one deck is set altogether.
Further, described secondary tower body is spray column structure and is provided with rear spraying mechanism, and described rear spraying mechanism is connected with slurry pool by the second circulating pump.
Further, described rear spraying mechanism comprises rear gunite layer and is connected to the rear shower nozzle of rear gunite layer, and the spout of described rear shower nozzle is arranged down; Described rear gunite layer is connected with slurry pool by Posterior circle pipeline, and described second circulating pump is located between Posterior circle pipeline.
Further, two to four layers of described rear gunite layer are set altogether, and are provided with switching control pilot between gunite layer and Posterior circle pipeline afterwards described in each.
Further, described gas approach is located at the top of one-level tower body, and described exhanst gas outlet is located at the top of secondary tower body.
Further, demister is provided with between described rear spraying mechanism and exhanst gas outlet.
Further, be provided with slurries division board in described slurry pool, slurry pool is divided into just to the one-level slurry pool of one-level tower body with just to the secondary slurry pool of secondary tower body by described slurries division board.
Further, this absorption tower also comprises Based Intelligent Control mechanism, and described Based Intelligent Control mechanism comprises automatic controller and the detector for Real-Time Monitoring flue gas load, and described detector, the first circulating pump and switching control pilot are connected with automatic controller respectively.
Beneficial effect of the present invention: smoke carbon dioxide capture absorption tower of the present invention, adopt single tower double circulation structure, one-level tower body is designed to liquid column tower structure, front spraying mechanism controls the height of liquid column-spraying by variable frequency pump, can not only investment reduction, occupation of land, can reduce absorption tower resistance, variable frequency pump can regulate for power-plant flue gas load condition, effectively reduces system energy consumption simultaneously.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the invention will be further described:
Fig. 1 is structural representation of the present invention;
Fig. 2 is the theory diagram of Based Intelligent Control mechanism of the present invention.
Detailed description of the invention
Fig. 1 is structural representation of the present invention, as shown in the figure: the smoke carbon dioxide capture absorption tower of the present embodiment, comprise the one-level tower body 1 being provided with gas approach 11, the secondary tower body 2 being provided with exhanst gas outlet 21 and be communicated with the cycle flue 3 of described one-level tower body 1 and secondary tower body 2, slurry pool is formed at the below of described one-level tower body 1 and secondary tower body 2 and is integrally formed U-shaped absorption tower, cross section with one-level tower body 1 and secondary tower body 2 and cycle flue 3 UNICOM; Described one-level tower body 1 is liquid column tower structure and is provided with front spraying mechanism, and described front spraying mechanism is connected with slurry pool by the first circulating pump 41, and described first circulating pump 41 is variable frequency pump; Described gas approach 11 is preferably located at the top of one-level tower body 1, and described exhanst gas outlet 21 is preferably located at the top of secondary tower body 2; Adopt single tower double circulation structure, one-level tower body 1 is designed to liquid column tower structure, front spraying mechanism controls the height of liquid column-spraying by variable frequency pump, can not only investment reduction, occupation of land, absorption tower resistance can be reduced simultaneously, variable frequency pump can regulate for power-plant flue gas load condition, effectively reduces system energy consumption.
In the present embodiment, described front spraying mechanism comprises front gunite layer 121 and is connected to the front shower nozzle 122 of front gunite layer 121, and the spout of described front shower nozzle 122 is arranged upward; Described front gunite layer 121 is connected with slurry pool by front circulating line 51, and described first circulating pump 41 is located between front circulating line 51; Inlet and the liquid outlet of the first circulating pump 41 are all connected front circulating line 51; In order to simplify adjustment further, this absorption tower only arranges gunite layer 121 before described in one deck, and front gunite layer 121 can be in conplane many showers, and front shower nozzle 122 also comes on shower.
In the present embodiment, described secondary tower body 2 is spray column structure and is provided with rear spraying mechanism, and described rear spraying mechanism is connected with slurry pool by the second circulating pump 42; Described rear spraying mechanism comprises rear gunite layer 221 and is connected to the rear shower nozzle 222 of rear gunite layer 221, and the spout of described rear shower nozzle 222 is arranged down; Described rear gunite layer 221 is connected with slurry pool by Posterior circle pipeline 52, and described second circulating pump 42 is located between Posterior circle pipeline 52; Two to four layers of described rear gunite layer 221 are set altogether, and are provided with switching control pilot 6 between gunite layer 221 and Posterior circle pipeline 52 afterwards described in each; By the keying of switching control pilot 6, the number of plies that after controlling, gunite layer 221 acts on, thus corresponding with one-level tower body 1, regulate for power-plant flue gas load condition, to reduce system energy consumption further.
In the present embodiment, between described rear spraying mechanism and exhanst gas outlet 21, be provided with demister 7; Demister 7 can be dull and stereotyped or chevron shaped fixed board-like demister, also can be other forms such as the combination of wet electrical dust precipitator or fixed board-like demister and wet electrical dust precipitator, flue gas droplet content can be controlled in OK range, enter air again.
In the present embodiment, be provided with slurries division board 81 in described slurry pool, slurry pool is divided into just to the one-level slurry pool 8a of one-level tower body 1 with just to the secondary slurry pool 8b of secondary tower body 2 by described slurries division board; This structure is conducive to the relatively independent operation of guarantee two tower body.
In the present embodiment, this absorption tower also comprises Based Intelligent Control mechanism, described Based Intelligent Control mechanism comprises automatic controller 91 and the detector 92 for Real-Time Monitoring flue gas load, and described detector 92, first circulating pump 41 and switching control pilot 6 are connected with automatic controller 91 respectively; As shown in Figure 2, set up the control accuracy that this absorption tower can be improved by Based Intelligent Control mechanism, reduce labor strength; Automatic controller 91 can be single-chip microcomputer, detector 92 will reach automatic controller 91 by signal by detecting the signals such as flue gas flow rate, flow, concentration, automatic controller 91 by the open/close states of the power and switching control pilot 6 of establishing programme-control first circulating pump 41 in it, to complete automatic control.
What finally illustrate is, above embodiment is only in order to illustrate technical scheme of the present invention and unrestricted, although with reference to preferred embodiment to invention has been detailed description, those of ordinary skill in the art is to be understood that, can modify to technical scheme of the present invention or equivalent replacement, and not departing from aim and the scope of technical solution of the present invention, it all should be encompassed in the middle of right of the present invention.
Claims (10)
1. a smoke carbon dioxide capture absorption tower, it is characterized in that: comprise the one-level tower body being provided with gas approach, the secondary tower body being provided with exhanst gas outlet and be communicated with the cycle flue of described one-level tower body and secondary tower body, slurry pool is formed at the below of described one-level tower body and secondary tower body and is integrally formed U-shaped absorption tower, cross section with one-level tower body and secondary tower body and cycle flue UNICOM; Described one-level tower body is liquid column tower structure and is provided with front spraying mechanism, and described front spraying mechanism is connected with slurry pool by the first circulating pump, and described first circulating pump is variable frequency pump.
2. smoke carbon dioxide capture absorption tower according to claim 1, is characterized in that: described front spraying mechanism comprises front gunite layer and is connected to the front shower nozzle of front gunite layer, and the spout of described front shower nozzle is arranged upward; Described front gunite layer is connected with slurry pool by front circulating line, and described first circulating pump is located between front circulating line.
3. smoke carbon dioxide capture absorption tower according to claim 2, is characterized in that: arrange gunite layer before described in one deck altogether.
4. the smoke carbon dioxide capture absorption tower according to any one of claims 1 to 3, is characterized in that: described secondary tower body is spray column structure and is provided with rear spraying mechanism, and described rear spraying mechanism is connected with slurry pool by the second circulating pump.
5. smoke carbon dioxide capture absorption tower according to claim 4, is characterized in that: described rear spraying mechanism comprises rear gunite layer and is connected to the rear shower nozzle of rear gunite layer, and the spout of described rear shower nozzle is arranged down; Described rear gunite layer is connected with slurry pool by Posterior circle pipeline, and described second circulating pump is located between Posterior circle pipeline.
6. smoke carbon dioxide capture absorption tower according to claim 5, is characterized in that: arrange two to four layers of described rear gunite layer altogether, and is provided with switching control pilot between gunite layer and Posterior circle pipeline afterwards described in each.
7. smoke carbon dioxide capture absorption tower according to claim 6, it is characterized in that: described gas approach is located at the top of one-level tower body, described exhanst gas outlet is located at the top of secondary tower body.
8. smoke carbon dioxide capture absorption tower according to claim 7, is characterized in that: be provided with demister between described rear spraying mechanism and exhanst gas outlet.
9. smoke carbon dioxide capture absorption tower according to claim 4, it is characterized in that: be provided with slurries division board in described slurry pool, slurry pool is divided into just to the one-level slurry pool of one-level tower body with just to the secondary slurry pool of secondary tower body by described slurries division board.
10. smoke carbon dioxide capture absorption tower according to claim 5, it is characterized in that: this absorption tower also comprises Based Intelligent Control mechanism, described Based Intelligent Control mechanism comprises automatic controller and the detector for Real-Time Monitoring flue gas load, and described detector, the first circulating pump and switching control pilot are connected with automatic controller respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510320542.1A CN104888583A (en) | 2015-06-11 | 2015-06-11 | Capture and absorption tower for carbon dioxide in flue gas |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510320542.1A CN104888583A (en) | 2015-06-11 | 2015-06-11 | Capture and absorption tower for carbon dioxide in flue gas |
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| CN104888583A true CN104888583A (en) | 2015-09-09 |
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| CN201510320542.1A Pending CN104888583A (en) | 2015-06-11 | 2015-06-11 | Capture and absorption tower for carbon dioxide in flue gas |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109224794A (en) * | 2018-09-29 | 2019-01-18 | 南京硫研环保科技有限公司 | A kind of integrated efficient absorption reaction device |
| CN113813749A (en) * | 2021-10-25 | 2021-12-21 | 北京美斯顿科技开发有限公司 | A energy-conserving wisdom carbon island for whole factory exhaust gas carbon entrapment |
| CN113926303A (en) * | 2021-09-10 | 2022-01-14 | 中国石油化工股份有限公司 | Low partial pressure carbon dioxide entrapment absorption tower |
| CN115178056A (en) * | 2022-07-29 | 2022-10-14 | 北京石大油源科技开发有限公司 | Efficient capturing method and device for medium and high-concentration carbon dioxide |
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| CN1167003A (en) * | 1996-05-30 | 1997-12-10 | 三菱重工业株式会社 | Method for treating fume and system thereof |
| US6138378A (en) * | 1997-11-11 | 2000-10-31 | Mitsubishi Heavy Industries, Ltd. | Wet gas processing method and the apparatus using the same |
| CN1795965A (en) * | 2004-12-29 | 2006-07-05 | 清华大学 | Liquid column jet type stack gas desulfurization |
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| CN202823161U (en) * | 2012-09-19 | 2013-03-27 | 浙江蓝天求是环保集团有限公司 | U-shaped combined wet desulphurization device |
| CN204684919U (en) * | 2015-06-11 | 2015-10-07 | 中电投远达环保工程有限公司 | Smoke carbon dioxide capture absorption tower |
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- 2015-06-11 CN CN201510320542.1A patent/CN104888583A/en active Pending
Patent Citations (6)
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| CN1167003A (en) * | 1996-05-30 | 1997-12-10 | 三菱重工业株式会社 | Method for treating fume and system thereof |
| US6138378A (en) * | 1997-11-11 | 2000-10-31 | Mitsubishi Heavy Industries, Ltd. | Wet gas processing method and the apparatus using the same |
| CN1795965A (en) * | 2004-12-29 | 2006-07-05 | 清华大学 | Liquid column jet type stack gas desulfurization |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109224794A (en) * | 2018-09-29 | 2019-01-18 | 南京硫研环保科技有限公司 | A kind of integrated efficient absorption reaction device |
| CN113926303A (en) * | 2021-09-10 | 2022-01-14 | 中国石油化工股份有限公司 | Low partial pressure carbon dioxide entrapment absorption tower |
| CN113926303B (en) * | 2021-09-10 | 2022-08-02 | 中国石油化工股份有限公司 | Low partial pressure carbon dioxide entrapment absorption tower |
| CN113813749A (en) * | 2021-10-25 | 2021-12-21 | 北京美斯顿科技开发有限公司 | A energy-conserving wisdom carbon island for whole factory exhaust gas carbon entrapment |
| CN115178056A (en) * | 2022-07-29 | 2022-10-14 | 北京石大油源科技开发有限公司 | Efficient capturing method and device for medium and high-concentration carbon dioxide |
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Application publication date: 20150909 |