CN104014222A - Sleeve-type adsorber and method for adsorbing and desorbing CO2 by utilizing sleeve-type adsorber - Google Patents
Sleeve-type adsorber and method for adsorbing and desorbing CO2 by utilizing sleeve-type adsorber Download PDFInfo
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- CN104014222A CN104014222A CN201410283495.3A CN201410283495A CN104014222A CN 104014222 A CN104014222 A CN 104014222A CN 201410283495 A CN201410283495 A CN 201410283495A CN 104014222 A CN104014222 A CN 104014222A
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- absorber
- sleeve
- desorption
- adsorber
- sleeve pipe
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- 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
- Y02C—CAPTURE, STORAGE, SEQUESTRATION OR DISPOSAL OF GREENHOUSE GASES [GHG]
- Y02C20/00—Capture or disposal of greenhouse gases
- Y02C20/40—Capture or disposal of greenhouse gases of CO2
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Abstract
The invention discloses a sleeve-type adsorber, and relates to a device for capturing CO2 in flue gas and a method for adsorbing and desorbing the CO2 by utilizing the sleeve-type adsorber. The sleeve-type adsorber is an improvement of the conventional adsorber; a flue gas outlet is formed in the upper end of the adsorber; a flue gas inlet is formed in the lower end of the adsorber; a sleeve is arranged on the outer side of the wall surface of the adsorber; a water outlet is formed in the upper part of the sleeve; a water inlet is formed in the lower part of the sleeve; a water inlet and outlet channel is formed between the wall surface of the adsorber and the sleeve. The CO2 can be adsorbed by utilizing the sleeve-type adsorber. Cold water is introduced in an adsorbing process of the sleeve-type adsorber disclosed by the invention, so that the adsorption time can be shortened by 40 seconds, and the adsorption amount can be improved by 0.08 mol/kg; hot water is introduced when the sleeve-type adsorber is used for desorbing, so that the desorption time can be shortened by 90 seconds, and the desorption rate can be increased from 0.76 to 0.81. According to the sleeve-type adsorber, the problem about thermal effect during the adsorbing process can be solved effectively; the adsorption rate and the desorption rate for adsorbing and capturing the CO2 can be increased.
Description
Technical field
The present invention relates to a kind of CO in flue gas that catches
2device and utilize its adsorption and desorption CO
2method, be specifically related to a kind of bushing type absorber and utilize its adsorption and desorption CO
2method.
Background technology
The country that fossil fuel is important energy source be take in China, CO
2total emission volumn occupies first of countries in the world, and main emission source is coal-burning power plant, contained CO in coal-burning power plant's discharge flue gas
2, be the principal element that causes greenhouse effects.So CO in separating flue mist
2, be a problem in the urgent need to address.
The separation method of mist comprises absorption process, absorption method, membrane separation process etc., and wherein the absorption method advantages such as simple, corrosion-free and energy consumption is low with equipment, become the focus that people study application in engineering reality.Yet, if adopt absorption method to catch CO in flue gas
2, because flue gas in coal-burning power plant has high flow velocities and temperature, and contained CO
2concentration is lower, causes absorption method to catch CO in flue gas
2research, there are many technological difficulties, the method that there is no at present obtains engineering application.
Summary of the invention
The object of this invention is to provide a kind of bushing type absorber and utilize its adsorption and desorption CO
2method, can effectively solve the fuel factor problem of adsorption process, improve absorption and catch CO
2adsorption desorption rate.
The object of the invention is to be achieved through the following technical solutions:
A bushing type absorber, is the improvement to existing absorber, and the upper end of absorber is exhanst gas outlet, lower end is gas approach, and absorber wall arranged outside has sleeve pipe, and the top of sleeve pipe is provided with delivery port, bottom is provided with water inlet, forms Inlet and outlet water passage between absorber wall and sleeve pipe.
Utilize above-mentioned bushing type absorber CO absorption
2method be: fill adsorbent in absorber, in adsorption process, the passage forming to sleeve pipe and absorber passes into the cooling absorber wall of cold water, takes away adsorption process liberated heat, strengthen the outside heat-transfer effect of absorber wall, reach the effect that reduces absorber internal temperature.
Utilize above-mentioned bushing type absorber desorption CO
2method be: adsorbent CO absorption in above-mentioned bushing type absorber
2after saturated, carry out in desorption process, the passage forming to sleeve pipe and absorber passes into hot water heating absorber wall, to supplement the necessary caloric receptivity of desorption process.
In the bushing type absorber adsorption process of the present invention's design, pass into cold water, can reduce the adsorption time of 40s, and improve the adsorbance of 0.08mol/kg; During bushing type absorber desorption, logical hot water, can reduce the desorption time of 90s, and desorption rate is brought up to 0.81 from 0.78.
Accompanying drawing explanation
Fig. 1 is the structural representation of bushing type absorber;
Fig. 2 be adsorbance over time;
Fig. 3 distributes for the axial temperature of absorption after saturated;
Fig. 4 be desorption rate over time;
Fig. 5 is the distribution vertically of absorber temperature;
In figure: 1-absorber, 2-sleeve pipe, 3-water inlet, 4-delivery port, 5-gas approach, 6-exhanst gas outlet.
The specific embodiment
Below in conjunction with accompanying drawing, technical scheme of the present invention is further described; but do not limit to so; every technical solution of the present invention is modified or is equal to replacement, and not departing from the spirit and scope of technical solution of the present invention, all should be encompassed in protection scope of the present invention.
The specific embodiment one: be the impact of the fuel factor in reduction adsorption desorption process on process, present embodiment is carried out improvement as shown in Figure 1 to absorber 1 shell mechanism, at absorber 1 wall, make again a sleeve pipe 2 that caliber is slightly large outward, the top of sleeve pipe 2 is provided with delivery port 4, bottom is provided with water inlet 3, and the upper end of absorber 1 is exhanst gas outlet 6, and lower end is gas approach 5, sleeve pipe 2 and absorber 1 wall have formed the structure of approximate double-tube heat exchanger, form a new-type bushing type absorber.At absorber 1, carry out in the process of adsorption operations, the passage consisting of to sleeve pipe 2 and absorber 1 feedwater piping that arranges passes into the cooling absorber wall of cold water, strengthens the outside heat-transfer effect of absorber wall, reaches the effect that reduces absorber 1 internal temperature; During desorption, then pass into hot water heating absorber wall in sleeve pipe 2, to supplement the necessary caloric receptivity of desorption process.
The specific embodiment two: when present embodiment be take the absorption of bushing type absorber, logical cold water is example:
During absorption, in bushing type absorber, pass into 7 ℃ of cold water, flow 100L/min, in absorber, initial pressure is 0.1MPa, temperature is environment temperature 300K.Simulated flue gas temperature is 330K, flow 50L/min, CO in flue gas
2concentration 15%.For ease of analyzing, adsorption process analog result and the conventional absorber analog result of the bushing type absorber of logical cold water are drawn in the curve map of Fig. 2 and 3 in the lump.
Fig. 2 has shown CO in the bushing type absorber adsorption process of logical cold water and former absorber adsorption process
2adsorbance is curve over time, because cold water in sleeve pipe flows, has taken away the heat that part adsorption process discharges, so adsorption rate gets a promotion, the time that absorption reaches capacity has dropped to 320s by original 360s, and adsorption rate promotes greatly; And saturated extent of adsorption has also risen to 2.50mol/kg from 2.42mol/kg, the heat exchange that cooling collar is strengthened absorber outer wall is set as seen, to improving adsorption rate and saturated extent of adsorption, there is obvious effect.
Fig. 3 represents to adsorb when saturated the situation of change of axial temperature in absorber, can see, bushing type absorber temperature in absorber when reducing absorption is to have effect clearly, adsorbent axial temperature T
s0.5 ℃ of left and right of average reduction, this has also explained and has set up after cooling collar, the reason that adsorption rate and adsorbance are improved: cooling collar has reduced absorber internal temperature field, is conducive to the carrying out of adsorption process.
By result of calculation, find, adopt bushing type absorber and pass into the method for cold water, can effectively improve adsorption rate and saturated extent of adsorption.
The specific embodiment three: when present embodiment be take bushing type absorber desorption, logical hot water is example:
The temperature of the hot water passing into casing space is 340K, flow 100L/min, and the initial temperature condition of desorption is that normal pressure-variable adsorption proceeds to temperature when saturated, contained CO in adsorbent during desorption
2saturated extent of adsorption 2.40mol/kg when amount is saturated for adsorbing.In desorption device sleeve pipe, pass into hot water, desorption rate over time curve as shown in Figure 4, desorption end of a period axial temperature distributes as shown in Figure 5.
Fig. 4 has shown the step-down desorption of bushing type absorber and the CO of conventional absorber step-down desorption
2desorption rate is curve over time, because hot water flow in sleeve pipe is supplemented the heat that desorption process needs, so desorption rate get a promotion, desorption completely the time by original 600s, dropped to 510s left and right, desorption arrives speed completely and greatly promotes; And desorption rate has also risen to 0.81 from 0.78, the heat exchange that heating muff is strengthened desorption device outer wall is set as seen, to improving desorption rate and desorption rate, there is obvious effect.
The situation of change of axial temperature in absorber when Fig. 5 has shown desorption 960s, can see, bushing type absorber during to rising desorption the temperature of absorber be to have effect clearly, the axial temperature 1 ℃ of left and right that on average raises, desorption process is the process of a heat absorption, can cause the decline of temperature in absorber, and heating muff is to desorption system additional heat in desorption, improved desorption device internal temperature field, be conducive to desorption and carry out fast.In addition, the temperature of desorption device outlet (being 350mm place) is lower, than the low 2.4 ℃ of left and right of the position temperature of z=0, because can absorb heat from adsorbent in the process of gas outside moving to desorption device, position from outlet away from more, adsorbent absorbed heat is fewer, and axial temperature is higher; Position from outlet close to more, absorbed heat is more, and temperature is lower.
In addition, the logical hot water of desorption process makes the average of axial temperature raise 1 ℃, the axial temperature that during this value ratio absorption, logical cold water has increased by 0.5 ℃ of left and right is low, the cold water of logical 280K when this is because adsorbs, and the boundary condition of original environment temperature is 300K, be equivalent to increase the heat transfer temperature difference of 20K, and the hot water of logical 340K during desorption, be equivalent to increase the heat transfer temperature difference of 40K, more obvious to the change of temperature.
Claims (4)
1. a bushing type absorber, comprises absorber, it is characterized in that the wall arranged outside of described absorber has sleeve pipe, and the top of sleeve pipe is provided with delivery port, and bottom is provided with water inlet, forms Inlet and outlet water passage between absorber wall and sleeve pipe.
2. bushing type absorber according to claim 1, the upper end that it is characterized in that described absorber is exhanst gas outlet, lower end is gas approach.
3. one kind is utilized the bushing type absorber CO absorption described in claim 1 or 2
2method, it is characterized in that described method is: fill adsorbent in absorber, in adsorption process, the passage forming to sleeve pipe and absorber passes into the cooling absorber wall of cold water, takes away adsorption process liberated heat.
4. one kind is utilized the bushing type absorber desorption CO described in claim 1 or 2
2method, it is characterized in that described method is: adsorbent CO absorption in bushing type absorber
2after saturated, carry out in desorption process, the passage forming to sleeve pipe and absorber passes into hot water heating absorber wall, to supplement the necessary caloric receptivity of desorption process.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410283495.3A CN104014222A (en) | 2014-06-19 | 2014-06-19 | Sleeve-type adsorber and method for adsorbing and desorbing CO2 by utilizing sleeve-type adsorber |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410283495.3A CN104014222A (en) | 2014-06-19 | 2014-06-19 | Sleeve-type adsorber and method for adsorbing and desorbing CO2 by utilizing sleeve-type adsorber |
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| CN104014222A true CN104014222A (en) | 2014-09-03 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110046474A (en) * | 2019-05-28 | 2019-07-23 | 中国恩菲工程技术有限公司 | Simulate the method and system of alternating temperature pressure swing adsorber |
Citations (5)
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|---|---|---|---|---|
| GB2015804A (en) * | 1978-02-24 | 1979-09-12 | Rca Corp | Optical record member |
| GB2155804A (en) * | 1984-03-06 | 1985-10-02 | Boc Group Plc | Improvements in pressure swing adsorption techniques |
| CN1676197A (en) * | 2005-01-04 | 2005-10-05 | 华南理工大学 | Active carbon fiber fixed bed continuous adsorption and desorption apparatus |
| CN1772348A (en) * | 2005-10-21 | 2006-05-17 | 中国科学院广州地球化学研究所 | Purifying method and apparatus for air with low concentration organic pollutant |
| CN102274672A (en) * | 2011-08-05 | 2011-12-14 | 湖北锡鹏科技开发有限公司 | General partition wall vibrating process and device for recovering volatile organic matters |
-
2014
- 2014-06-19 CN CN201410283495.3A patent/CN104014222A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2015804A (en) * | 1978-02-24 | 1979-09-12 | Rca Corp | Optical record member |
| GB2155804A (en) * | 1984-03-06 | 1985-10-02 | Boc Group Plc | Improvements in pressure swing adsorption techniques |
| CN1676197A (en) * | 2005-01-04 | 2005-10-05 | 华南理工大学 | Active carbon fiber fixed bed continuous adsorption and desorption apparatus |
| CN1772348A (en) * | 2005-10-21 | 2006-05-17 | 中国科学院广州地球化学研究所 | Purifying method and apparatus for air with low concentration organic pollutant |
| CN102274672A (en) * | 2011-08-05 | 2011-12-14 | 湖北锡鹏科技开发有限公司 | General partition wall vibrating process and device for recovering volatile organic matters |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110046474A (en) * | 2019-05-28 | 2019-07-23 | 中国恩菲工程技术有限公司 | Simulate the method and system of alternating temperature pressure swing adsorber |
| CN110046474B (en) * | 2019-05-28 | 2023-08-22 | 中国恩菲工程技术有限公司 | Method and system for simulating variable-temperature and variable-pressure adsorbers |
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Application publication date: 20140903 |