CN109200749A - A kind of temp.-changing adsorption carbon capture system of microwave heating auxiliary desorption process - Google Patents
A kind of temp.-changing adsorption carbon capture system of microwave heating auxiliary desorption process Download PDFInfo
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- CN109200749A CN109200749A CN201811152703.0A CN201811152703A CN109200749A CN 109200749 A CN109200749 A CN 109200749A CN 201811152703 A CN201811152703 A CN 201811152703A CN 109200749 A CN109200749 A CN 109200749A
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- 238000001179 sorption measurement Methods 0.000 title claims abstract description 128
- 238000003795 desorption Methods 0.000 title claims abstract description 56
- 238000000034 method Methods 0.000 title claims abstract description 56
- 229910052799 carbon Inorganic materials 0.000 title claims abstract description 46
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 45
- 238000010438 heat treatment Methods 0.000 title claims abstract description 36
- 238000001816 cooling Methods 0.000 claims abstract description 36
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 17
- 229910021536 Zeolite Inorganic materials 0.000 claims abstract description 9
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 claims abstract description 9
- 239000010457 zeolite Substances 0.000 claims abstract description 9
- 239000000463 material Substances 0.000 claims description 14
- 230000008676 import Effects 0.000 claims description 13
- 239000003546 flue gas Substances 0.000 claims description 12
- 239000007789 gas Substances 0.000 claims description 12
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 11
- 239000003463 adsorbent Substances 0.000 claims description 11
- 230000005611 electricity Effects 0.000 claims description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 abstract description 37
- 229910002092 carbon dioxide Inorganic materials 0.000 abstract description 22
- 239000001569 carbon dioxide Substances 0.000 abstract description 14
- 238000006243 chemical reaction Methods 0.000 abstract description 6
- 238000009776 industrial production Methods 0.000 abstract description 4
- 238000009413 insulation Methods 0.000 abstract 1
- 229960004424 carbon dioxide Drugs 0.000 description 17
- 238000010521 absorption reaction Methods 0.000 description 12
- 241000196324 Embryophyta Species 0.000 description 8
- 238000005265 energy consumption Methods 0.000 description 8
- 235000011089 carbon dioxide Nutrition 0.000 description 6
- 239000000498 cooling water Substances 0.000 description 5
- 239000002134 carbon nanofiber Substances 0.000 description 3
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 3
- 238000002485 combustion reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000002803 fossil fuel Substances 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 241001138386 Canavalia cathartica Species 0.000 description 1
- 239000006096 absorbing agent Substances 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 239000002156 adsorbate Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003575 carbonaceous material Substances 0.000 description 1
- 150000001768 cations Chemical class 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000001351 cycling effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000005431 greenhouse gas Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 239000002594 sorbent Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
- B01D53/04—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography with stationary adsorbents
- B01D53/0462—Temperature swing adsorption
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/50—Carbon oxides
- B01D2257/504—Carbon dioxide
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2259/00—Type of treatment
- B01D2259/40—Further details for adsorption processes and devices
- B01D2259/40083—Regeneration of adsorbents in processes other than pressure or temperature swing adsorption
- B01D2259/40088—Regeneration of adsorbents in processes other than pressure or temperature swing adsorption by heating
- B01D2259/40094—Regeneration of adsorbents in processes other than pressure or temperature swing adsorption by heating by applying microwaves
-
- 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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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Separation Of Gases By Adsorption (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
Abstract
本发明公开了一种微波加热辅助解吸过程的变温吸附碳捕集系统，包括变温吸附碳捕集单元、微波解吸单元以及冷却单元；所述碳捕集单元包括空压机、两个电控阀、两个吸附塔和一个四通换向阀；所述微波解吸单元包括分别设置在两个吸附塔上的微波加热装置；两个吸附塔均包裹有保温层；所述冷却单元由冷却塔、水泵、电控三通阀构成；微波解吸单元为变温吸附碳捕集单元提供解吸过程所需的热量，其具有加热速度快、能源利用率高的优势；本发明吸附温度为20℃‑35℃，脱附温度为110℃‑130℃，保证了沸石13X吸附能力的最大化；采用两个或多个反应塔的循环模式能够确保变温吸附碳捕集过程的连续性，提高二氧化碳捕集速率，有利于工业生产。
The invention discloses a temperature-swing adsorption carbon capture system for a microwave heating-assisted desorption process, comprising a temperature-swing adsorption carbon capture unit, a microwave desorption unit and a cooling unit; the carbon capture unit includes an air compressor and two electronically controlled valves , two adsorption towers and a four-way reversing valve; the microwave desorption unit includes microwave heating devices respectively arranged on the two adsorption towers; both adsorption towers are wrapped with a thermal insulation layer; the cooling unit is composed of a cooling tower, It is composed of a water pump and an electronically controlled three-way valve; the microwave desorption unit provides the heat required for the desorption process for the temperature swing adsorption carbon capture unit, which has the advantages of fast heating speed and high energy utilization rate; the adsorption temperature of the present invention is 20°C-35°C , the desorption temperature is 110℃-130℃, which ensures the maximization of the adsorption capacity of zeolite 13X; the circulation mode using two or more reaction towers can ensure the continuity of the temperature swing adsorption carbon capture process and improve the carbon dioxide capture rate. conducive to industrial production.
Description
Technical field
The present invention relates to a kind of Microwave assisted desorption carbon capture technical fields, and in particular to a kind of microwave heating auxiliary solution
It is drawn through the temp.-changing adsorption carbon capture system of journey.
Background technique
According to U.S.National Oceanic and Atmospheric Administration be located at Hawaii emit receive Mauna Loa Greenhouse station see
It surveys, carbon dioxide mean concentration reaches 403.38ppm in the atmosphere of in September, 2017, and mean concentration increases compared with the same period of last year
2.35ppm.Although regulation related with combustion of fossil fuels and guide are more and more, and exist including solar energy and wind-power electricity generation
Interior low-carbon technology is rapidly developed, but the concentration of carbon dioxide still rises at an amazing speed in atmosphere.Joint
A latest report of state shows that the amount of last year whole world carbon emission has reached nearly 3,000,000 years peaks.In order to alleviate greenhouse effect
The influence answered, the content for reducing atmospheric greenhouse gas are extremely urgent.Since the carbon dioxide concentration in air is lower, directly from sky
Trapping carbon dioxide is very inefficient in gas, therefore controls the large-scale CO2 emission source such as ground such as power plant, cement plant and smeltery
CO2 emission is most important.Currently, trapping carbon dioxide from coal-fired plant flue gas has become a kind of alleviation greenhouse
The important way of effect.
Currently, there are three types of the carbon capture methods of mainstream, including absorption process carbon capture, absorption method carbon capture, membrane separation process carbon
Trapping.Wherein, absorption method has that process flow is simple, low energy consumption equipment is simple, easily realizes automatic operation and does not have to consider
The advantages such as corrosion problems have prospect very much.Absorption method carbon capture mainly includes temp.-changing adsorption, pressure-variable adsorption and Electrical swing absorption
Three kinds of modes, wherein temperature swing adsorption process is simple, suitable distribution carbon capture system, but its productivity for trapping carbon dioxide
Lower, the present invention substantially reduces the time-consuming of sorption cycle by microwave device and cooling device, improves productivity.
Compared with conventional heating regeneration, microwave heating technique has many advantages.Microwave heating can be to adsorption material
Material inside and outside heats together, and heating is exceedingly fast, and instantaneously reaches a high temperature, and thermal losses is small, the thermal efficiency is high, can largely save energy；Microwave adds
Hot homogeneous heating, temperature gradient-pole is small in microwave field, therefore the thermal efficiency is high；It is carried out since microwave can be transmitted to inside adsorbent material
Heating, the temperature rise of material are no longer conducted heat from surface of material to inner layer not against heat transfer, so, the heating rate of adsorbent material
Quickly, temperature required for desorption cracking can be reached using microwave heating method；In addition, microwave adds relative to conventional heating
The occupied area of thermal method equipment is smaller, and is more advantageous to and realizes high automation control mode.
On the one hand, part inventor is mainly innovated with developing novel sorbent material.Such as Publication No.
The preparation method for a kind of high performance carbon base carbon dioxide adsorbent material that the patent of CN105664850A provides, by introducing strong gold
Attribute metal cation adulterates carbon material, to obtain the adsorption material to carbon dioxide under low pressure with good adsorption properties
Material, preparation method is easy, is easy to amplify, and has good universality.Also just like the patent of Publication No. CN106378091A
Propose a kind of carbon dioxide absorber of carbon nano-fiber adsorbent material with N doping, carbon nano-fiber absorption obtained
Material has preferable adsorption capacity, higher selectivity and cyclical stability, prepared carbon nano-fiber to carbon dioxide
With good flexible and mechanical strength, strong operability, the collecting carbonic anhydride needs in different discharge places can be met.More than
Apply for a patent, developed just for the kind for the adsorbent that carbon capture process uses, be not related to temp.-changing adsorption
Description innovation in the heating means and system level to adsorbent that process uses, is not present technologic innovation, and adsorb
The determination that the heating time of the desorption of process is too long does not overcome.
On the other hand, some inventors attempt in the equipment of collecting carbonic anhydride as innovated on absorption tower structure.
Such as the patent that notification number is CN107126814A proposes a kind of novel radial flow adsorption tower for pressure-variable adsorption, unstripped gas by
Center tube passage imports annular outer passageway, and radial inflow adsorbent layer through isocon, enters in annular after adsorbing separation and leads to
Road, flowing of the gas outside adsorption tower, in internal channel constitute the U-shaped type of flow, make static pressure variation tendency outer, in internal channel
It is identical in the axial flow direction of air-flow, realize being uniformly distributed for air-flow, the structure good, gas process with gas homogeneity
The advantages such as long, adsorbent utilization rate height and bed are stable.For another example application No. is the patent of AU20070902503 (Chinese publication numbers
CN101795750A the adsorption tower and stripper of a kind of stand-alone configuration) are proposed, is suitable for from the power station of combustion of fossil fuels
Waste gas stream in capture carbon dioxide.It is still conventional without solving although these patents are optimized in equipment level
Adsorption process energy consumption it is excessively high and, desorption time is long, the disadvantage of inefficiency.
In summary existing patent not can solve the intrinsic problem of current carbon capture adsorption process from the point of view of, that is, desorb
Process energy consumption is high, and rate is slow, the low problem of cycling rate.Need a kind of completely new desorption heating means at present to promote desorption process
Progress rapidly and efficiently
Summary of the invention
The purpose of the invention is to overcome the deficiencies in the prior art, the present invention provides a kind of microwave heating auxiliary solution and is drawn through
The temp.-changing adsorption carbon capture system of journey assists desorption technique and temp.-changing adsorption carbon capture technology as core, simultaneously using microwave heating
The speed for being accelerated bed cooling after desorption using cooling tower, is met under conditions of guaranteeing energy consumption, and carbon capture productivity is improved
Demand.
In order to solve the above-mentioned technical problem, the present invention proposes that a kind of temp.-changing adsorption carbon of microwave heating auxiliary desorption process is caught
Collecting system is made of temp.-changing adsorption carbon capture unit, microwave desorption unit and cooling unit；The carbon capture unit includes sky
Press, the first electrically-controlled valve, the second electrically-controlled valve, the first adsorption tower, the second adsorption tower and four-way reversing valve；The air inlet of the air compressor machine
Mouth is connected with by the entrance of pretreated coal-fired plant flue gas；The exhaust outlet of the air compressor machine and inlet manifold road phase
Even, the end of the inlet manifold is divided into two branches in parallel and is connected respectively with the first adsorption tower, the second adsorption tower, and described the
One electrically-controlled valve, the second electrically-controlled valve are separately positioned on every branch road, the top outlet of first adsorption tower and the second adsorption tower
Mouth is respectively connected to two imports of the four-way reversing valve；The one outlet of the four-way reversing valve leads to atmospheric outlet, institute
Enrichment CO is led in another outlet for stating four-way reversing valve2Gas vent；The microwave desorption unit includes being separately positioned on institute
State the microwave heating equipment on the first adsorption tower and the second adsorption tower；The periphery of first adsorption tower and second adsorption tower
It is enclosed with insulating layer；The outlet of the cooling tower is connected to the import of the water pump, and the outlet of the water pump passes through described first
Electrocontrolled tee valve is connected with the working medium import of first adsorption tower and the second adsorption tower respectively, first adsorption tower and second
After the sender property outlet of adsorption tower is connected with the second Electrocontrolled tee valve, it is then connected to the import of the cooling tower.
Further, the adsorbent material filled in first adsorption tower and the second adsorption tower is zeolite 13X.
The adsorption temp range of first adsorption tower and the second adsorption tower is 20 DEG C -35 DEG C, and desorption temperature range is 110
℃-130℃。
The desorption temperature-rise period of microwave heating method auxiliary temp.-changing adsorption carbon capture of the present invention, while cooling tower acceleration cooled down
Journey improves the productivity of temp.-changing adsorption trapping carbon dioxide to shorten circulation time-consuming.Compared with prior art, beneficial effect is:
(1) heat needed for microwave desorption unit provides desorption process for temp.-changing adsorption carbon capture unit has heating
The advantage that speed is fast, energy utilization rate is high, and the desorption energy consumption of temp.-changing adsorption carbon capture is substantially less than absorption process carbon capture
(2) desorption and adsorption process are accelerated using microwave desorption unit and cooling unit, improves CO2The production of trapping
Rate is conducive to industrial production.
(3) low temperature (20 DEG C -35 DEG C) of adsorption process is guaranteed using microwave desorption unit and cooling unit and be desorbed
The high temperature (110 DEG C -130 DEG C) of journey, ensure that the maximization of zeolite 13X adsorption capacity.
(4) it can ensure the continuity of temp.-changing adsorption carbon capture process using the circulation pattern of two or more reaction towers,
Collecting carbonic anhydride rate is improved, industrial production is conducive to.
Detailed description of the invention
Fig. 1 is the temp.-changing adsorption carbon capture system schematic that a kind of microwave heating of the present invention assists desorption process.
In figure:
Entrance 2- air compressor machine the first electrically-controlled valve of 3- of 1- coal-fired plant flue gas
4- the second electrically-controlled valve 5- the first adsorption tower the second adsorption tower of 6-
7- four-way reversing valve 8- atmospheric outlet 9- is enriched with CO2Gas vent
10- water circulating cooling tower 11- water pump the first Electrocontrolled tee valve of 12-
13- microwave heating equipment 14- insulating layer the second Electrocontrolled tee valve of 15-
Specific embodiment
Technical solution of the present invention is described in further detail in the following with reference to the drawings and specific embodiments, it is described specific
Embodiment is only explained the present invention, is not intended to limit the invention.
The temp.-changing adsorption carbon capture system of microwave heating proposed by the present invention auxiliary desorption process is a kind of to be added using microwave
Heat method provide desorption needed for temperature, using cooling tower provide adsorb required for temperature, then with common temp.-changing adsorption system
System combines, to reach relatively low energy consumption, CO in high yield trapping power-plant flue gas2Demand.
As shown in Figure 1, a kind of temp.-changing adsorption carbon capture system of microwave heating auxiliary desorption process of the present invention, is inhaled by alternating temperature
Attached carbon capture unit, microwave desorption unit and cooling unit composition.
The carbon capture unit includes air compressor machine 2, the first electrically-controlled valve 3, the second electrically-controlled valve 4, the suction of the first adsorption tower 5, second
Attached tower 6 and four-way reversing valve 7.The adsorbent material filled in first adsorption tower 5 and the second adsorption tower 6 is zeolite 13X.It is described
The air inlet of air compressor machine 2 is connected with by the entrance 1 of pretreated coal-fired plant flue gas；The exhaust outlet of the air compressor machine 2
It is connected with inlet manifold road, the end of the inlet manifold is divided into two branches in parallel and inhales respectively with the first adsorption tower 5, second
Attached tower 6 is connected, and first electrically-controlled valve 3, the second electrically-controlled valve 4 are separately positioned on every branch road, first adsorption tower 5 and the
The top gas outlet of two adsorption towers 6 is respectively connected to two imports of the four-way reversing valve 7；The one of the four-way reversing valve 7
Lead to atmospheric outlet 8 for a outlet, and enrichment CO is led in another outlet of the four-way reversing valve 72Gas vent 9, thus firing
The entrance 1 of coal-fired plant's flue gas, the first adsorption tower 5, the second adsorption tower 6, atmospheric outlet 8, enrichment CO2Between gas vent 9
Form flue gas road.
The microwave desorption unit includes microwave heating equipment 13, insulating layer 14 and reaction kettle body, reaction kettle therein
Body is served as by the first adsorption tower 5 and the second adsorption tower 6, and the main function of the microwave heating equipment 13 is required for generating desorption
Microwave energy, and then be converted to thermal energy；The insulating layer 14 can reduce the loss of energy.First adsorption tower 5 and
Two adsorption towers 6 are the spaces for realizing adsorbate and microwave field interactions, and microwave energy is converted to thermal energy herein to realize desorption
The process of desorption.In the present invention, the adsorption temp range of first adsorption tower 5 and the second adsorption tower 6 is 20 DEG C -35 DEG C, solution
Inhaling temperature range is 110 DEG C -130 DEG C.
The cooling unit is made of cooling tower 10, water pump 11, the first Electrocontrolled tee valve 12 and the second Electrocontrolled tee valve 15；
The outlet of the cooling tower 10 is connected to the import of the water pump 11, and the outlet of the water pump 11 passes through the described first automatically controlled threeway
Valve 12 is connected with the working medium import of first adsorption tower 5 and the second adsorption tower 6 respectively, and first adsorption tower 5 and second is inhaled
The sender property outlet of attached tower 6 is connected with the second electric T-shaped valve 15, is then connected to the import of the cooling tower 10.To in cooling tower
10, chilled(cooling) water return (CWR) is formed between water pump 11, the first adsorption tower 5 and the second adsorption tower 6.The cooling working medium of the cooling tower 10 is
Water, cooling water enter above two adsorption towers, flow back in cooling tower again after cooling adsorption tower, this process is provided dynamic by water pump 11
Energy.
The entrance 1 of the coal-fired plant flue gas, can be attached according to multiple groups double suction by pipe fitting a plurality of branch in parallel
Tower, then its structure setting is identical, end and the four-way of the every group of double reaction tower structure settings on every air intake branch road
Between reversal valve (7).Cooling water channel and microwave unit guarantee adsorption process low temperature (20 DEG C -35 DEG C) and desorption process high temperature
(110 DEG C -130 DEG C), it is ensured that the efforts ability of zeolite.
The workflow of carbon capture unit is passed through by pretreated carbonated coal-fired plant flue gas in the present invention
The first electronic valve 3 shown in state 1 enters in the first adsorption tower 5 as shown in figure 1, in the first absorption of the cooling of cooled water loop
It is adsorbed in tower 5 (20 DEG C -35 DEG C) by zeolite 13X, remaining flue gas is emitted in atmosphere 8；At this point, heated by microwave device adds
6 (110 DEG C -130 DEG C) the beginning desorption processes of the second adsorption tower of heat discharge high concentration CO2, and be discharged by four-way reversing valve 7,
Complete the trapping process of carbon dioxide.Assuming that first circulation of carbon capture unit is completed, four-way reversing valve 7 turns 90 clockwise
Degree, the second electronic valve 4 is opened at this time, as shown in figure 1 shown in state 2, desorption process occurs in the first adsorption tower 5 at this time, second inhales
Adsorption process occurs in attached tower 6, and then realizes double tower absorption, the switching of desorption state.
The workflow of microwave desorption unit is in the present invention, and microwave heating equipment 13 generates microwave, when four-way reversing valve 7
In state 1, the second adsorption tower 6 is heated；When four-way reversing valve 7 is in state 2, the first adsorption tower 5 is heated,
To maintain 110 DEG C -130 DEG C of desorption temperature.
The workflow of cooling unit is in the present invention, and when four-way reversing valve 7 is in state 1, cooling water passes through first
Electrocontrolled tee valve 12 enters in the first adsorption tower 5, cools down to it, and when four-way reversing valve 7 is in state 2, cooling water is logical
It crosses the second Electrocontrolled tee valve 15 to enter in the second adsorption tower 6, it is cooled down, it is cold to maintain 20 DEG C -35 DEG C of desorption temperature
But water route passes through the switching of the first Electrocontrolled tee valve 12, realizes between different adsorption towers (the first adsorption tower 5 and the second adsorption tower 6)
Switching.The reflux of second Electrocontrolled tee valve 15 control cooling water.
To sum up, temperature needed for the present invention provides desorption using the method for microwave heating provides absorption institute using cooling tower
The temperature needed, then combined with common temperature swing adsorption system, to reach relatively low energy consumption, high yield trapping power-plant flue gas
Middle CO2Demand.Cooling unit guarantees adsorption process low temperature (20 DEG C -35 DEG C), and microwave unit guarantees desorption process high temperature (110
DEG C -130 DEG C), to ensure the ability to work of zeolite.
The present invention has the advantage that heating speed is fast, energy utilization rate is high, and the desorption energy consumption of temp.-changing adsorption carbon capture is aobvious
It writes and is lower than absorption process carbon capture；Desorption and adsorption process are accelerated using microwave desorption unit and cooling unit, improve CO2Trapping
Productivity；Guarantee the low temperature (20 DEG C -35 DEG C) and desorption process of adsorption process using microwave desorption unit and cooling unit
High temperature (110 DEG C -130 DEG C), ensure that the maximization of zeolite 13X adsorption capacity；Using the circulation of two or more reaction towers
Mode can ensure the continuity of temp.-changing adsorption carbon capture process, improve collecting carbonic anhydride rate, be conducive to industrial production.
Although above in conjunction with attached drawing, invention has been described, and the invention is not limited to above-mentioned specific implementations
Mode, the above mentioned embodiment is only schematical, rather than restrictive, and those skilled in the art are at this
Under the enlightenment of invention, without deviating from the spirit of the invention, many variations can also be made, these belong to of the invention
Within protection.
Claims (3)
1. a kind of temp.-changing adsorption carbon capture system of microwave heating auxiliary desorption process, by temp.-changing adsorption carbon capture unit, microwave
Desorption unit and cooling unit composition；It is characterized by:
The carbon capture unit includes air compressor machine (2), the first electrically-controlled valve (3), the second electrically-controlled valve (4), the first adsorption tower (5),
Two adsorption towers (6) and four-way reversing valve (7)；The air inlet of the air compressor machine (2) and the pretreated coal-fired plant flue gas of process
Entrance (1) is connected；The exhaust outlet of the air compressor machine (2) is connected with inlet manifold road, and the end of the inlet manifold is divided into
Two branches in parallel are connected with the first adsorption tower (5), the second adsorption tower (6) respectively, first electrically-controlled valve (3), the second electricity
Control valve (4) is separately positioned on every branch road, the top gas outlet difference of first adsorption tower (5) and the second adsorption tower (6)
It is connected to two imports of the four-way reversing valve (7)；The one outlet of the four-way reversing valve (7) leads to atmospheric outlet (8),
Enrichment CO is led in another outlet of the four-way reversing valve (7)2Gas vent (9)；
The microwave desorption unit includes that the microwave being separately positioned on first adsorption tower (5) and the second adsorption tower (6) adds
Thermal (13)；The periphery of first adsorption tower (5) and second adsorption tower (6) is enclosed with insulating layer (14)；
The cooling unit is by cooling tower (10), water pump (11), the first Electrocontrolled tee valve (12) and the second Electrocontrolled tee valve (15)
It constitutes；The outlet of the cooling tower (10) is connected to the import of the water pump (11), and the outlet of the water pump (11) passes through described
First Electrocontrolled tee valve (12) is connected with the working medium import of first adsorption tower (5) and the second adsorption tower (6) respectively, and described
The sender property outlet of one adsorption tower (5) and the second adsorption tower (6) is connected with the second Electrocontrolled tee valve (15), is then connected to the cooling
The import of tower (10).
2. assisting the temp.-changing adsorption carbon capture system of desorption process according to microwave heating described in claims 1, which is characterized in that
The adsorbent material filled in first adsorption tower (5) and the second adsorption tower (6) is zeolite 13X.
3. assisting the temp.-changing adsorption carbon capture system of desorption process according to microwave heating described in claims 1, which is characterized in that
The adsorption temp range of first adsorption tower (5) and the second adsorption tower (6) is 20 DEG C -35 DEG C, and desorption temperature range is 110
℃-130℃。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811152703.0A CN109200749A (en) | 2018-09-29 | 2018-09-29 | A kind of temp.-changing adsorption carbon capture system of microwave heating auxiliary desorption process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201811152703.0A CN109200749A (en) | 2018-09-29 | 2018-09-29 | A kind of temp.-changing adsorption carbon capture system of microwave heating auxiliary desorption process |
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Cited By (7)
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| CN110813017A (en) * | 2019-12-12 | 2020-02-21 | 上海穗杉实业股份有限公司 | A system and method for purifying carbon dioxide |
| CN113209815A (en) * | 2020-01-21 | 2021-08-06 | 中国石油化工股份有限公司 | Equipment for treating VOCs (volatile organic compounds) by microwave enhanced catalytic oxidation |
| CN113617187A (en) * | 2021-10-11 | 2021-11-09 | 德仕能源科技集团股份有限公司 | A method of recovering carbon dioxide |
| CN114602290A (en) * | 2022-03-31 | 2022-06-10 | 上海交通大学 | Two-stage continuous mineralized carbon capture system and operation method |
| CN116951803A (en) * | 2023-07-20 | 2023-10-27 | 上海交通大学 | CO2 recirculating purged heat pump driven direct air carbon capture system and method therefor |
| EP4054741A4 (en) * | 2019-11-04 | 2023-12-06 | Soletair Power Oy | Method and apparatus for recovering carbon dioxide and use of the method |
| CN119926111A (en) * | 2025-03-11 | 2025-05-06 | 哈尔滨电气科学技术有限公司 | A preheating treatment carbon dioxide adsorption system and operation method thereof |
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| CN114602290A (en) * | 2022-03-31 | 2022-06-10 | 上海交通大学 | Two-stage continuous mineralized carbon capture system and operation method |
| CN116951803A (en) * | 2023-07-20 | 2023-10-27 | 上海交通大学 | CO2 recirculating purged heat pump driven direct air carbon capture system and method therefor |
| CN119926111A (en) * | 2025-03-11 | 2025-05-06 | 哈尔滨电气科学技术有限公司 | A preheating treatment carbon dioxide adsorption system and operation method thereof |
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