CN116272315A - Micro-interface oscillation absorber, regenerator, carbon capture and regeneration system and method - Google Patents
Micro-interface oscillation absorber, regenerator, carbon capture and regeneration system and method Download PDFInfo
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- 238000011069 regeneration method Methods 0.000 title claims abstract description 162
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- 238000000034 method Methods 0.000 title claims abstract description 53
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 35
- 229910052799 carbon Inorganic materials 0.000 title claims abstract description 33
- 239000007788 liquid Substances 0.000 claims abstract description 389
- 238000010521 absorption reaction Methods 0.000 claims abstract description 232
- 230000001172 regenerating effect Effects 0.000 claims abstract description 27
- 239000002994 raw material Substances 0.000 claims abstract description 18
- 238000005507 spraying Methods 0.000 claims description 45
- 238000007872 degassing Methods 0.000 claims description 43
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- 238000009987 spinning Methods 0.000 claims description 15
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- 238000006243 chemical reaction Methods 0.000 abstract description 6
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- 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
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/77—Liquid phase processes
- B01D53/78—Liquid phase processes with gas-liquid contact
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- 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
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/62—Carbon oxides
-
- 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
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/96—Regeneration, reactivation or recycling of reactants
-
- 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
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- Environmental & Geological Engineering (AREA)
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- General Chemical & Material Sciences (AREA)
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Abstract
The invention belongs to CO 2 The technical field of trapping and utilizing sealing and storage, in particular discloses a micro-interface oscillation absorber, a regenerator, a carbon trapping and regenerating system and a method with lower energy consumption. The micro-interface oscillation absorber can enable absorption liquid to form innumerable absorption liquid mist drops with high specific surface area through the arranged oscillation absorption unit, and the absorption liquid mist drops and CO in the raw material gas rotating at high speed 2 The reaction increases the area of the effective phase boundary of gas and liquid, strengthens the interaction between two phases and effectively improves CO 2 Efficiency of trapping and reduced absorption liquid loss. Capturing CO using the micro-interface oscillation absorber 2 The high-speed rotation of the raw gas and the injection of the absorption liquid mainly depend on the initial speed of the absorption liquid fed into the absorber body, and no additional pressurization is needed, so that CO 2 The energy consumption in the trapping process is relatively lowLow. Based on the same working principle, the micro-interface oscillation regenerator can effectively desorb CO through the arranged oscillation regeneration unit 2 The rich liquid is regenerated into the absorption liquid, high-frequency oscillation is not required to be additionally applied, and the energy consumption is low.
Description
Technical Field
The invention belongs to CO 2 The technical field of trapping and utilizing sealing, in particular to a micro-interface oscillation absorber, a regenerator, a carbon trapping and regenerating system and a method.
Background
CO 2 Is a greenhouse gas which absorbs long wave radiation reflected from the ground and re-emits the radiation, and is the main gas responsible for the greenhouse effect. For CO 2 The trapping method mainly comprises a chemical absorption method, a physical adsorption method, a membrane separation method, a low-temperature distillation method and the like, wherein the chemical absorption method is the most mature in technology, but the problems of low regeneration efficiency, high energy consumption, large trapping equipment and the like still exist.
At present, researchers further develop methods and devices for capturing and regenerating carbon with more excellent efficacy based on a chemical absorption method. For example: the Chinese patent application with publication number of CN104307337A discloses a method and a system for capturing and separating carbon dioxide in hot blast stove flue gas, wherein the method comprises the following steps: the flue gas at the outlet of the hot blast stove is subjected to temperature control treatment and is sprayed into a high-pressure mixing absorption tower through a flue gas pressurizing device; pressurizing the ammonia water solution by an ammonia water pressurizing device and spraying the pressurized ammonia water solution into the absorption tower; the solution formed in the absorption tower flows into the high-frequency oscillation separation tower from the bottom through the flow guide pipe; the residual unabsorbed dissolved gas is directly discharged into the atmosphere from the upper part of the absorption tower through a constant pressure discharge device; the mixed liquid entering the high-frequency oscillation separation tower from the lower part of the absorption tower is separated out of carbon dioxide through a high-frequency oscillator arranged in the high-frequency oscillation separation tower; the precipitated carbon dioxide is subjected to concentration detection and collected; the ammonia water solution at the lower part is collected again to remove impurities and then recycled.
Although the method and the system pressurize the flue gas and the ammonia water by the pressurizing device and then spray the pressurized flue gas and the ammonia water into the high-pressure mixed absorption tower to absorb CO 2 Introducing a high-frequency oscillator into the separation tower, and using bicarbonateInstability of ammonium solution to CO in aqueous ammonia 2 Precipitation of CO 2 But the method and system employ a flue gas pressurization device and an ammonia pressurization device to promote CO 2 Is used to promote CO by using a high-frequency oscillator 2 Precipitation, no matter CO 2 In the trapping process, also CO 2 The equipment used in the desorption process has larger energy consumption, is unfavorable for energy conservation and environmental protection, and has higher manufacturing and using costs.
Disclosure of Invention
The invention provides a micro-interface oscillation absorber, which aims to improve CO 2 The trapping efficiency is reduced while the energy consumption is reduced.
The technical scheme adopted for solving the technical problems is as follows: the micro-interface oscillation absorber comprises an absorber body, an absorber defogging device and an oscillation absorption unit;
the top of the absorber body is provided with a purified gas outlet, the side part of the absorber body is provided with a raw gas inlet and an absorber liquid inlet, and the bottom of the absorber body is provided with an absorber liquid outlet;
the absorber demisting device is arranged in the inner cavity of the absorber body, and the air outlet side of the absorber demisting device corresponds to the purified air outlet;
The oscillation absorption unit is arranged in the inner cavity of the absorber body and is positioned at the lower side of the absorber demister; the number of the oscillation absorption units is at least two, and the oscillation absorption units are uniformly distributed around the central line of the absorber body;
the vibration absorption unit comprises an absorption unit main body which is vertically arranged, the absorption unit main body is of a cylindrical structure with a closed upper end, an inner cavity of the absorption unit main body is an absorption rotation-making cavity, and the absorption rotation-making cavity mainly comprises a first cylindrical cavity and a first conical cavity which are communicated up and down;
an absorption unit air inlet is formed in the side wall of the absorption unit main body, and the inflow direction of the absorption unit air inlet is tangential to the absorption cyclone cavity and is communicated with the raw gas air inlet;
the side wall of the absorption unit main body at the lower side of the absorption unit air inlet is provided with at least two first liquid spraying structures, each first liquid spraying structure comprises at least two absorption liquid spraying holes uniformly distributed along the circumferential direction of the absorption unit main body, and each absorption liquid spraying hole is respectively communicated with the liquid inlet of the absorber;
a first degassing pipe is arranged on the absorption unit main body along the central line of the absorption unit main body, an air outlet at the upper end of the first degassing pipe corresponds to the air inlet side of the absorber demisting device, and an air inlet at the lower end of the first degassing pipe penetrates into the absorption cyclone cavity from the central part of the upper end of the absorption unit main body and extends to the lower sides of all absorption liquid spraying holes;
The lower end opening of the first conical cavity is an absorption unit underflow opening, and the absorption unit underflow opening is communicated with the lower part of the inner cavity of the absorber body.
Further, the micro-interface oscillation absorber further comprises an absorber downcomer;
an absorption unit underflow pipe is arranged on the absorption unit underflow port and is communicated with the lower part of the inner cavity of the absorber body through the absorption unit underflow pipe;
the absorber downcomer is arranged in the inner cavity of the absorber body and is positioned between two adjacent oscillation absorption units, the liquid inlet at the upper end of the absorber downcomer corresponds to the air inlet side of the absorber demister, and the liquid outlet at the lower end of the absorber downcomer is communicated with the lower part of the inner cavity of the absorber body.
Further, the column cone ratio of the absorption spinning cavity is 2-3:1;
the depth of the first degassing pipe extending into the absorption spiral cavity is 1/5-3/5 of the height of the first columnar cavity, and the inner diameter of the first degassing pipe is 1/4-1/3 of the diameter of the first columnar cavity;
the taper angle of the first conical cavity is 20-30 degrees.
Based on the same working principle, the invention also provides a device capable of effectively desorbing CO 2 The micro-interface oscillation regenerator with low energy consumption comprises a regenerator body, a regenerator demisting device and an oscillation regeneration unit;
The top of the regenerator body is provided with an acid gas outlet, the side part of the regenerator body is provided with a regenerator gas inlet, a regenerator liquid inlet and a regenerator first liquid outlet, and the bottom of the regenerator body is provided with a regenerator second liquid outlet;
the demisting device of the regenerator is arranged in the inner cavity of the regenerator body, and the air outlet side of the demisting device corresponds to the acid gas outlet;
the oscillation regeneration unit is arranged in the inner cavity of the regenerator body and is positioned at the lower side of the demister of the regenerator; the number of the oscillation regeneration units is at least two, and the oscillation regeneration units are uniformly distributed around the central line of the regenerator body;
the oscillation regeneration unit comprises a regeneration unit main body which is vertically arranged, the regeneration unit main body is of a cylindrical structure with a closed upper end, an inner cavity of the regeneration unit main body is a regeneration spinning cavity, and the regeneration spinning cavity mainly comprises a second cylindrical cavity and a second conical cavity which are vertically communicated;
a regeneration unit air inlet is arranged on the side wall of the regeneration unit main body, and the inflow direction of the regeneration unit air inlet is tangential to the regeneration swirl generating cavity and is communicated with the regenerator air inlet;
at least two second liquid spraying structures are arranged on the side wall of the regeneration unit main body at the lower side of the regeneration unit air inlet, each second liquid spraying structure comprises at least two regeneration liquid spraying holes which are uniformly distributed along the circumferential direction of the regeneration unit main body, and each regeneration liquid spraying hole is respectively communicated with the liquid inlet of the regenerator;
The upper end air outlet of the second degassing pipe corresponds to the air inlet side of the demister of the regenerator, and the lower end air inlet of the second degassing pipe penetrates into the regeneration swirl making cavity from the central part of the upper end of the regeneration unit main body and extends to the lower sides of all regeneration liquid spraying holes;
the lower end opening of the second conical cavity is a regeneration unit underflow opening, and the regeneration unit underflow opening is communicated with the lower part of the inner cavity of the regenerator body.
Further, the micro-interface oscillation regenerator also comprises a regenerator downcomer and a breather pipe;
the regeneration unit underflow opening is provided with a regeneration unit underflow pipe and is communicated with the lower part of the inner cavity of the regenerator body through the regeneration unit underflow pipe;
the lower end of the lower liquid outlet of the lower liquid inlet corresponds to the lower part of the inner cavity of the regenerator body;
the breather pipe is vertically arranged in the inner cavity of the regenerator body and is positioned at the lower side of the demister of the regenerator.
Further, the column cone ratio of the regeneration spinning cavity is 2-3:1;
The depth of the second degassing pipe extending into the regeneration rotary cavity is 1/5-3/5 of the height of the second cylindrical cavity, and the inner diameter of the second degassing pipe is 1/4-1/3 of the diameter of the second cylindrical cavity;
the taper angle of the second conical cavity is 20-30 degrees.
The invention also provides a carbon capturing and regenerating system with lower energy consumption, which comprises a raw material gas fan and CO 2 The device comprises an absorber, a rich liquid pump, a lean liquid pump, a first heat exchanger, a second heat exchanger and an absorption liquid regenerator; the CO 2 The absorber is the micro-interface oscillation absorber, and the absorption liquid regenerator is the micro-interface oscillation regenerator;
the gas outlet of the raw gas fan is connected with the raw gas inlet of the micro-interface oscillation absorber;
an absorber liquid outlet of the micro-interface oscillation absorber is connected with a liquid inlet of a rich liquid pump, a liquid outlet of the rich liquid pump is connected with a medium inlet of a first heat exchanger, and a medium outlet of the first heat exchanger is connected with a regenerator liquid inlet of the micro-interface oscillation regenerator;
the first liquid outlet of the regenerator of the micro-interface oscillation regenerator is connected with the heat exchange inlet of the second heat exchanger, the heat exchange outlet of the second heat exchanger is connected with the air inlet of the regenerator of the micro-interface oscillation regenerator, the medium inlet of the second heat exchanger is connected with the medium outlet of the heat medium source, and the medium outlet of the second heat exchanger is connected with the medium inlet of the cold medium source;
The second liquid outlet of the regenerator of the micro-interface oscillation regenerator is connected with the heat exchange inlet of the first heat exchanger, the heat exchange outlet of the first heat exchanger is connected with the liquid inlet of the lean liquid pump, and the liquid outlet of the lean liquid pump is connected with the liquid inlet of the absorber of the micro-interface oscillation absorber.
Further, the carbon capture and regeneration system further comprises a first condenser, a second condenser, a first separator, a second separator and a filter;
the purified gas outlet of the micro-interface oscillation absorber is connected with the tangential gas inlet of the first separator, and the bottom liquid outlet of the first separator is connected with the liquid inlet of the rich liquid pump;
the acid gas outlet of the micro-interface oscillation regenerator is connected with the tangential gas inlet of the second separator through the first condenser, the bottom liquid outlet of the second separator is connected with the liquid inlet of the lean liquid pump, and the liquid outlet of the lean liquid pump is connected with the liquid inlet of the absorber of the micro-interface oscillation absorber through the second condenser;
the filter is connected in parallel on a pipeline between the second condenser and the liquid inlet of the absorber.
The invention also provides a carbon capturing and regenerating method, which adopts the carbon capturing and regenerating system to capture CO 2 And regenerating the absorption liquid.
Further, the above-described carbon capturing and regenerating method includes an apparatus control step that includes:
controlling the working temperature of the micro-interface oscillation absorber to be not more than 40 ℃, the working pressure to be 20 KPa-6 MPa, and the gas-liquid ratio to be 150-300:1;
the working temperature of the micro-interface oscillation regenerator is controlled to be 110-150 ℃, the working pressure is 1-100 Kpa, the gas-liquid ratio is 50-100:1, the temperature of lean liquid flowing out of the second liquid outlet of the regenerator is 110-120 ℃, and the temperature of rich liquid flowing in of the liquid inlet of the regenerator is 90-100 ℃.
The beneficial effects of the invention are as follows:
1) The micro-interface oscillation absorber is characterized in that a plurality of oscillation absorption units which are uniformly distributed around the central line of the absorber body are arranged in the inner cavity of the absorber body, and a raw gas inlet is communicated with an absorption unit inlet arranged on the side wall of the absorption unit main body, so that an absorption unit can be used for absorbingThe raw gas flowing from the raw gas inlet is tangentially fed into the absorption cyclone making cavity through the primary gas inlet, so that the raw gas forms a high-speed cyclone in the absorption cyclone making cavity, meanwhile, the liquid inlet of the absorber is respectively communicated with a plurality of absorption liquid spraying holes formed in the side wall of the main body of the absorption unit, and then the absorption liquid is radially sprayed into the absorption cyclone making cavity through the absorption liquid spraying holes, so that the sprayed absorption liquid is continuously cut by the high-speed rotating raw gas, thereby forming innumerable absorption liquid mist drops with high specific surface area, the gas-liquid mass transfer area is greatly increased, and the absorption liquid mist drops are subjected to the self-revolution coupling induced micro-interface oscillation process in the cyclone field, so that the internal-external exchange frequency of the absorption liquid mist drops can be accelerated, and the CO in the raw gas is greatly improved 2 The reaction rate with the absorption liquid effectively improves the CO 2 Efficiency of trapping and reduced absorption liquid loss. In addition, the micro-interface oscillation absorber is utilized to trap CO 2 In the process, the raw material gas rotates at a high speed, and the absorption liquid is injected mainly depending on the initial speed of the absorption liquid fed into the absorber body, so that additional pressurization is not needed, and CO 2 The energy consumption in the trapping process is low, and the manufacturing and using cost is low because no additional pressurizing equipment is arranged.
2) According to the micro-interface oscillation regenerator, a plurality of oscillation regeneration units which are uniformly distributed around the central line of the regenerator body are arranged in the inner cavity of the regenerator body, the air inlet of the regenerator is communicated with the air inlet of the regeneration unit which is arranged on the side wall of the main body of the regeneration unit, and then hot steam flowing in from the air inlet of the regenerator can be fed into the regeneration cyclone cavity along the tangential direction through the air inlet of the regeneration unit, so that the hot steam forms a high-speed cyclone in the regeneration cyclone cavity, meanwhile, the liquid inlet of the regenerator is respectively communicated with a plurality of regeneration liquid spraying holes which are arranged on the side wall of the main body of the regeneration unit, and further the absorption liquid can absorb CO through the regeneration liquid spraying holes 2 The formed rich liquid is radially sprayed into the regeneration cyclone cavity, so that the sprayed rich liquid is continuously cut by the high-speed rotating hot vapor, the rich liquid jet forms countless rich liquid fog drops under the shearing action of the high-speed vapor cyclone, the cyclone motion of the rich liquid fog drops in the regeneration cyclone cavity overcomes the limit of gravity on the rich liquid fog drops, and severe micro-interface oscillation is generated, thereby greatly increasing the rich liquid and the hot vapor The contact area of the steam and the end movement degree of the liquid effectively promote the heat transfer mixing effect, thereby leading the micro bubbles in the rich liquid to continuously migrate and aggregate under the action of rotating turbulence, finally separating under a centrifugal field and completing CO 2 Is desorbed from the reactor; CO precipitation from rich solution 2 The waste liquid is changed into lean liquid after the waste liquid is changed into the lean liquid, the lean liquid flows to the lower part of the inner cavity of the regenerator body from the bottom flow port of the regeneration unit under the action of gravity, and then most of lean liquid can flow out from the second liquid outlet of the regenerator at the bottom of the regenerator body, so that the regeneration of the absorption liquid is realized, and a small part of lean liquid (mainly water phase in the lean liquid) can flow out from the first liquid outlet of the regenerator at the side part of the regenerator body and can be heated again to be used as hot vapor for reuse. In addition, the micro-interface oscillation regenerator is utilized to desorb CO 2 In the regeneration process of the absorption liquid, the hot vapor rotates at a high speed and the rich liquid is sprayed into the main body of the regenerator mainly depending on the initial speed of the absorption liquid, and high-frequency oscillation is not required to be applied additionally, so that CO 2 The energy consumption in the desorption process is lower, and the manufacturing and using cost is lower because no additional high-frequency oscillation equipment is arranged.
3) CO employed by the carbon capture and regeneration system 2 The absorber is the micro-interface oscillation absorber, the adopted absorption liquid regenerator is the micro-interface oscillation regenerator, and CO is trapped by using the absorption liquid regenerator 2 The absorption liquid is regenerated, so that the device is high in efficiency, low in energy consumption, environment-friendly, cost-saving, suitable for carbon capture in various scenes, high in gas-liquid ratio, small in equipment height and size, convenient to maintain, simple in structure, free of internal moving parts, resistant to blockage and scaling and the like.
4) The carbon trapping and regenerating method can not only further improve CO trapping by effectively controlling the working parameters of the micro-interface oscillation absorber and the micro-interface oscillation regenerator 2 And the efficiency of absorbing liquid regeneration is ensured, the long-time stable operation of the system is ensured, and the service life of each device in the carbon capturing and regenerating system can be ensured.
Drawings
FIG. 1 is a schematic diagram of an embodiment of a micro-interface oscillation absorber of the present invention;
FIG. 2 is a schematic view of the arrangement of a plurality of shock absorbing elements in the inner cavity of the absorber body according to the present invention;
FIG. 3 is a schematic diagram of an embodiment of an oscillation absorbing unit according to the present invention;
FIG. 4 is a schematic diagram of the structure of a micro-interface oscillation regenerator according to the present invention;
FIG. 5 is a schematic view of the arrangement of a plurality of oscillation regeneration units in the inner cavity of the regenerator body according to the present invention;
fig. 6 is a schematic diagram of an embodiment of an oscillation regeneration unit in the present invention;
FIG. 7 is a schematic diagram of an embodiment of a carbon capture and regeneration system according to the present invention;
marked in the figure as: raw gas fan 100, CO 2 Absorber 200, absorber body 210, purified gas outlet 211, feed gas inlet 212, absorber liquid inlet 213, absorber liquid outlet 214, absorber mist eliminator 220, oscillating absorber unit 230, first cylindrical chamber 231, first conical chamber 232, absorber unit inlet 233, absorbing spray liquid orifice 234, first degassing tube 235, absorber unit downcomer 236, absorber downcomer 240, rich liquid pump 310, lean liquid pump 320, first heat exchanger 410, second heat exchanger 420, absorbing liquid regenerator 500, regenerator body 510, sour gas outlet 511, regenerator inlet 512, regenerator liquid inlet 513, regenerator first liquid outlet 514, regenerator second liquid outlet 515, regenerator mist eliminator 520, oscillating regenerator unit 530, second cylindrical chamber 531, second conical chamber 532, regenerator unit inlet 533, regeneration orifice 534, second degassing tube 535, regenerator unit downcomer 536, regenerator 540, 550, first condenser 610, second condenser 620, first separator 710, second separator 720, filter 800.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
In the description of the present invention, it should be noted that, directions or positional relationships indicated by terms such as "left", "right", "upper", "lower", "top", "bottom", "inner", "outer", etc., are based on directions or positional relationships shown in the drawings, are merely for convenience of description, and do not indicate or imply that the apparatus or component in question must have a specific direction, be constructed and operated in a specific direction, and thus should not be construed as limiting the present invention; the term "plurality" refers to two or more than two; the expression "consisting essentially of or consisting of … …" is to be interpreted as also containing structural elements not mentioned in this sentence; the term "micro-interface oscillation" refers to: particles in the swirling flow field revolve around the cylindrical cone spiral line and can rotate around the axis of the particle at a high speed, and the revolving movement can cause periodic change of acting force between the medium and the micro particles, so that the two-phase interface is deformed, and further the two-phase interface is promoted to oscillate. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Referring to fig. 1, 2 and 3, the micro-interface vibration absorber includes an absorber body 210, an absorber defogging device 220 and a vibration absorbing unit 230;
the absorber body 210 is a main body component of the micro-interface oscillation absorber, and is mainly used for mounting other parts; the absorber body 210 may have various structures such as a rectangular box, a cylindrical or prismatic tank, and the absorber body 210 may be made of various materials, for example: carbon steel, stainless steel, and other materials; the top of the absorber body 210 is provided with a purified gas outlet 211, the side part of the absorber body is provided with a raw gas inlet 212 and an absorber liquid inlet 213, and the bottom of the absorber body is provided with an absorber liquid outlet 214; the purified gas outlet 211 is generally in communication with an upper portion of the interior cavity of the absorber body 210, the raw gas inlet 212 and the absorber liquid inlet 213 are generally in communication with a middle portion of the interior cavity of the absorber body 210, and the absorber liquid outlet 214 is generally in communication with a lower portion of the interior cavity of the absorber body 210; CO 2 The absorbed raw material gas is formed into a purified gas, and the purified gas outlet 211 is mainly used for discharging the purified gas; the feed gas inlet 212 is mainly used for introducing the feed gas to be treated into the micro-interface oscillation absorber, and the feed gas can be various, for example: flue gas, natural gas, coal gas, and the like; absorber liquid inlet 213 is mainly used for introducing the micro-interface oscillation absorber for absorbing CO 2 Can be absorbed byTo be various, for example: ionic liquids, alcohol amine solutions, and the like; CO absorption 2 The absorption liquid forms rich liquid, and the absorber liquid outlet 214 is mainly used for discharging the rich liquid;
the absorber demister 220 is disposed in the inner cavity of the absorber body 210, and its air outlet side corresponds to the purified gas outlet 211; the absorber demister 220 is mainly used for demisting in the inner cavity of the absorber body 210, so as to prevent the discharged purified gas from taking away excessive absorption liquid, reduce the loss of the absorption liquid and avoid polluting the environment; the absorber defogger 220 is generally located above the feed gas inlet 212 and absorber liquid inlet 213, and can be various, such as: comprises an upper separation net, a lower separation net and demisting fillers, wherein the upper separation net and the lower separation net are arranged at intervals up and down; the upper and lower screens are generally made of hydrophilic materials, preferably hydrophilic stainless steel screen materials; the demisting filler is generally made of clear water materials; in order to facilitate the replacement of the defogging filler, a filler loading and unloading port corresponding to the defogging filler is generally provided on the absorber body 210;
the oscillation absorption unit 230 is mainly used for generating micro-interface oscillation to effectively absorb CO 2 It is generally made of a corrosion resistant material, preferably a stainless steel material; the oscillation absorbing unit 230 is disposed in the inner cavity of the absorber body 210 and is located at the lower side of the absorber defogging device 220; at least two oscillation absorbing units 230 are uniformly distributed around the center line of the absorber body 210, so that a plurality of oscillation absorbing units 230 can reach a better working state; the oscillation absorption units 230 may be configured in a single-stage, or multistage series, or multistage parallel structure, and typically the pressure drop of the single-stage oscillation absorption units 230 is controlled to be 500Pa or less;
the oscillation absorption unit 230 comprises an absorption unit main body which is vertically arranged, the absorption unit main body is of a cylindrical structure with a closed upper end, an inner cavity of the absorption unit main body is an absorption rotation-making cavity, and the absorption rotation-making cavity mainly comprises a first columnar cavity 231 and a first conical cavity 232 which are communicated up and down; the first columnar cavity 231 may have various columnar structures, preferably a cylindrical structure; the first tapered cavity 232 may be of various tapered configurations, preferably a conical configuration;
an absorption unit air inlet 233 is arranged on the side wall of the absorption unit main body, and the inflow direction of the absorption unit air inlet 233 is tangential to the absorption cyclone cavity and is communicated with the raw gas air inlet 212; in this way, it is advantageous to swirl the gas flowing from the absorption unit gas inlet 233 into the absorption cyclone chamber; in order to achieve good flow guiding effect, a cyclone flow guiding structure can be further arranged on the cavity wall of the absorption cyclone making cavity, for example: spiral diversion trench;
At least two first liquid spraying structures are arranged on the side wall of the absorption unit main body at the lower side of the absorption unit air inlet 233, each first liquid spraying structure comprises at least two absorption liquid spraying holes 234 which are uniformly distributed along the circumferential direction of the absorption unit main body, and each absorption liquid spraying hole 234 is respectively communicated with the absorber liquid inlet 213; by arranging a plurality of absorption liquid spraying holes 234, not only the inlets of the gas phase and the liquid phase are separated, but also the flow field coupling linkage function of the gas phase and the liquid phase is provided, the absorption and reaction functions of the gas phase and the liquid phase are increased, and the CO is enhanced 2 Is a natural absorption effect; preferably, 8-20 rows of first liquid spraying structures are distributed on the side wall of the absorption unit main body at intervals along the height direction, and the number of absorption liquid spraying holes 234 in each row of first liquid spraying structures is preferably controlled to be 8-15, and the aperture of the absorption liquid spraying holes 234 is preferably controlled to be 0.7-2.0 mm; in the embodiment of fig. 3, eight rows of first liquid ejecting structures are arranged on the side wall of the absorption unit main body at intervals in the height direction;
a first degassing pipe 235 is arranged on the absorption unit main body along the central line of the absorption unit main body, an air outlet at the upper end of the first degassing pipe 235 corresponds to the air inlet side of the absorber demister 220, and an air inlet at the lower end of the first degassing pipe penetrates into the absorption cyclone cavity from the central part of the upper end of the absorption unit main body and extends to the lower sides of all absorption spray holes 234; the lower air inlet of the first degassing pipe 235 extends to the lower side of all the absorption liquid spraying holes 234, mainly to avoid the formed absorption liquid droplets from being carried out through the first degassing pipe 235 as much as possible, ensuring that the absorption liquid droplets can fully absorb CO 2 The method comprises the steps of carrying out a first treatment on the surface of the The extending part of the first degassing pipe 235 can also form an annular channel with the cavity wall of the absorption cyclone-making cavity, so that the raw material gas can form cyclone;
the lower end opening of the first conical cavity 232 is an absorption unit bottom flow port, and the absorption unit bottom flow port is communicated with the lower part of the inner cavity of the absorber body 210;
in the use process, the raw material gas flowing in from the raw material gas inlet 212 is tangentially fed into the absorption cyclone making cavity through the absorption unit air inlet 233, so that the raw material gas forms a high-speed cyclone in the absorption cyclone making cavity, meanwhile, the absorption liquid flowing in from the absorber liquid inlet 213 is radially sprayed into the absorption cyclone making cavity through the absorption liquid spraying hole 234, the sprayed absorption liquid is continuously cut by the high-speed rotating raw material gas, so that innumerable absorption liquid mist drops with high specific surface area are formed, the gas-liquid mass transfer area is greatly increased, and the rotation-revolution coupling induction micro-interface oscillation process of the absorption liquid mist drops in the cyclone field can accelerate the internal-external exchange frequency of the absorption liquid mist drops, thus greatly improving the CO 2 The reaction rate with the absorption liquid effectively improves the CO 2 The efficiency of trapping and further reduces the loss of absorption liquid; in addition, CO is captured 2 In the process, the raw material gas rotates at a high speed, and the absorption liquid is injected mainly according to the initial speed of the absorption liquid fed into the absorber body 210, so that additional pressurization is not needed, and the energy consumption is low; the rich liquid flows into the lower part of the inner cavity of the absorber body 210 from the bottom flow port of the absorption unit under the action of gravity and finally flows out from the liquid outlet 214 of the absorber; the purified gas is discharged to the upper portion of the inner chamber of the absorber body 210 through the first degassing pipe 235, and is discharged from the purified gas outlet 211 after being defogged through the absorber defogging device 220.
In order to facilitate the diversion of the rich liquid, as shown in fig. 3, an absorption unit underflow pipe 236 is arranged on the absorption unit underflow port, and is communicated with the lower part of the inner cavity of the absorber body 210 through the absorption unit underflow pipe 236;
in order to prevent condensed absorption liquid in the absorber demister 220 from dripping into the absorption cyclone chamber from the upper end gas outlet of the first degassing pipe 235, CO is affected 2 Is generally provided with a shielding structure at the upper outlet of the first degassing tube 235, such as: the figure 1 shows a herringbone shelter;
in order to facilitate the condensed absorption liquid in the absorber demister 220 to be guided to the lower portion of the inner cavity of the absorber body 210, as shown in fig. 1, the micro-interface oscillating absorber further includes an absorber downcomer 240, where the absorber downcomer 240 is disposed in the inner cavity of the absorber body 210 and between two adjacent oscillating absorption units 230, and a plurality of vertical absorber downcomers 240 may be generally disposed according to the size and actual needs of the absorber; the upper liquid inlet of the absorber downcomer 240 corresponds to the gas inlet side of the absorber demister 220, and the lower liquid outlet of the absorber downcomer 240 communicates with the lower portion of the inner chamber of the absorber body 210.
Preferably, the column cone ratio of the absorption spinning cavity is controlled to be 2-3:1; the column-cone ratio of the absorption spin-making chamber refers to the height ratio of the first column-shaped chamber 231 to the first cone-shaped chamber 232; when the column cone ratio is within this range, CO is caused by the longer first column cavity 231 2 The reaction with the absorption liquid is more complete; the first conical cavity 232 is shorter, so that the speed of the rich liquid flowing out of the absorption cyclone cavity can be increased more quickly, and the oscillation absorption unit 230 can achieve better CO 2 Capturing effect;
the depth of the first degassing pipe 235 extending into the absorption spiral cavity is 1/5-3/5 of the height of the first columnar cavity 231, and the inner diameter of the first degassing pipe 235 is 1/4-1/3 of the diameter of the first columnar cavity 231; thus, the purified gas in the absorption cyclone cavity can be ensured to be smoothly discharged, and the absorption liquid and CO are not influenced 2 Reacting;
the cone angle of the first cone-shaped cavity 232 is preferably controlled to be 20-30 degrees, so that the speed of the rich liquid flowing out of the absorption cyclone cavity can be ensured to reach a better state, and the CO is indirectly promoted 2 Is effective in trapping.
As shown in fig. 4, 5 and 6, the present invention further provides a micro-interface oscillation regenerator, which includes a regenerator body 510, a regenerator defogging device 520 and an oscillation regeneration unit 530;
the regenerator body 510 is a main body component of the micro-interface oscillation regenerator, and is mainly used for mounting other parts; the regenerator body 510 may have various structures such as a rectangular box, a cylindrical or prismatic tank, and the regenerator body 510 may be made of various materials, for example: carbon steel, stainless steel, and other materials; the top of the regenerator body 510 is provided with an acid gas outlet 511, and the side thereof is provided with a regenerator An air inlet 512, a regenerator liquid inlet 513 and a regenerator first liquid outlet 514, and a regenerator second liquid outlet 515 is arranged at the bottom of the air inlet; the sour gas outlet 511 is generally in communication with an upper portion of the interior cavity of the regenerator body 510, the regenerator gas inlet 512 and the regenerator liquid inlet 513 are generally in communication with a middle portion of the interior cavity of the regenerator body 510, and the regenerator first liquid outlet 514 and the regenerator second liquid outlet 515 are generally in communication with a lower portion of the interior cavity of the regenerator body 510; desorbed CO 2 The acid gas outlet 511 is mainly used for discharging acid gas; regenerator gas inlet 512 is mainly used for introducing hot vapor which is in heat and mass transfer with rich liquid into the micro-interface oscillation regenerator; the regenerator liquid inlet 513 is mainly used for introducing rich liquid into the micro-interface oscillation regenerator; CO precipitation from rich solution 2 The waste liquid is changed into lean liquid, the first liquid outlet 514 of the regenerator is mainly used for discharging water phase in the lean liquid, and the second liquid outlet 515 of the regenerator is mainly used for discharging most of lean liquid, namely regenerated absorption liquid;
the regenerator demister 520 is arranged in the inner cavity of the regenerator body 510, and the air outlet side of the regenerator demister corresponds to the acid gas outlet 511; the demister 520 is mainly used for demisting in the inner cavity of the regenerator body 510, prevents the discharged acid gas from taking away excessive absorption liquid, and is beneficial to reducing the loss of the absorption liquid; the regenerator demister 520 is generally located above the regenerator inlet 512, the regenerator inlet 513, and the regenerator first outlet 514, and can be various, such as: comprises an upper separation net, a lower separation net and demisting fillers, wherein the upper separation net and the lower separation net are arranged at intervals up and down; the upper and lower screens are generally made of hydrophilic materials, preferably hydrophilic stainless steel screen materials; the demisting filler is generally made of clear water materials; in order to facilitate the replacement of the defogging filler, a filler loading and unloading port corresponding to the defogging filler is generally arranged on the regenerator body 510;
The oscillation regeneration unit 530 is mainly used for generating micro-interface oscillation to effectively desorb CO 2 It is generally made of a corrosion resistant material, preferably a stainless steel material; the oscillation regeneration unit 530 is disposed in the inner cavity of the regenerator body 510 and is located at the lower side of the regenerator defogging device 520; the oscillation regeneration unit 530 is at leastTwo, and evenly distributed around the center line of the regenerator body 510, so that the plurality of oscillation regeneration units 530 can reach a better working state; the oscillation regeneration unit 530 may be configured as a single stage, or a multistage series, or a multistage parallel structure, and typically the pressure drop of the single stage oscillation regeneration unit 530 is controlled to be 500Pa or less;
the oscillation regeneration unit 530 comprises a vertically arranged regeneration unit main body, the regeneration unit main body is of a cylindrical structure with a closed upper end, an inner cavity of the regeneration unit main body is a regeneration rotation-making cavity, and the regeneration rotation-making cavity mainly comprises a second cylindrical cavity 531 and a second conical cavity 532 which are communicated up and down; the second cylindrical cavity 531 may have a variety of cylindrical structures, preferably cylindrical structures; the second tapered cavity 532 may be of various tapered configurations, preferably conical;
a regeneration unit air inlet 533 is arranged on the side wall of the regeneration unit main body, and the inflow direction of the regeneration unit air inlet 533 is tangential to the regeneration swirl generating cavity and is communicated with the regenerator air inlet 512; in this way, the gas flowing into the regeneration cyclone chamber from the regeneration unit inlet 533 is facilitated to form a cyclone; in order to achieve good flow guiding effect, a rotational flow guiding structure can be further arranged on the cavity wall of the regeneration spinning cavity, for example: spiral diversion trench;
At least two second liquid spraying structures are arranged on the side wall of the regeneration unit main body at the lower side of the regeneration unit air inlet 533, the second liquid spraying structures comprise at least two regeneration liquid spraying holes 534 which are uniformly distributed along the circumferential direction of the regeneration unit main body, and each regeneration liquid spraying hole 534 is respectively communicated with the regenerator liquid inlet 513; by arranging the plurality of regeneration spray holes 534, not only the inlets of the gas phase and the liquid phase are separated, but also the flow field coupling linkage function of the gas phase and the liquid phase is provided, the absorption and reaction functions of the gas phase and the liquid phase are increased, and the CO is enhanced 2 Is a desorption effect of (a); preferably, 8-20 rows of second liquid spraying structures are distributed on the side wall of the regeneration unit main body at intervals along the height direction, and the number of regeneration liquid spraying holes 534 in each row of second liquid spraying structures is preferably controlled to be 8-15, and the aperture of the regeneration liquid spraying holes 534 is preferably controlled to be 0.7-2.0 mm; in the embodiment of fig. 6, five rows of second liquid ejecting structures are arranged on the side wall of the regeneration unit main body at intervals in the height direction;
a second degassing pipe 535 is arranged on the regeneration unit body along the central line of the regeneration unit body, the upper end air outlet of the second degassing pipe 535 corresponds to the air inlet side of the demister 520 of the regenerator, and the lower end air inlet of the second degassing pipe penetrates into the regeneration spinning chamber from the central part of the upper end of the regeneration unit body and extends to the lower sides of all regeneration spray holes 534 (not shown in fig. 6); the air inlet at the lower end of the second degassing pipe 535 extends to the lower side of all the regeneration spray holes 534, mainly to avoid the formed rich liquid droplets from being carried out through the second degassing pipe 535 as much as possible, so as to ensure that the rich liquid droplets can fully desorb CO 2 The method comprises the steps of carrying out a first treatment on the surface of the The extended part of the second degassing pipe 535 can also form an annular channel with the cavity wall of the regeneration swirl making cavity, which is further beneficial to the formation of swirl of hot vapor;
the lower end opening of the second conical cavity 532 is a regeneration unit bottom flow port, and the regeneration unit bottom flow port is communicated with the lower part of the inner cavity of the regenerator body 510;
in the use process, the hot vapor flowing in from the regenerator air inlet 512 is sent into the regeneration cyclone chamber along the tangential direction through the regenerator unit air inlet 533, so that the hot vapor forms a high-speed cyclone in the regeneration cyclone chamber, meanwhile, the rich liquid flowing in from the regenerator liquid inlet 513 is radially sprayed into the regeneration cyclone chamber through the regeneration spray holes 534, the sprayed rich liquid is continuously cut by the high-speed rotating hot vapor, the rich liquid jet forms countless rich liquid droplets under the shearing action of the high-speed vapor cyclone, the cyclone motion of the rich liquid droplets in the regeneration cyclone chamber overcomes the limit of gravity on the rich liquid droplets, and severe micro-interface oscillation is generated, the contact area of the rich liquid and the hot vapor and the end motion degree of the liquid are greatly increased, the heat transfer mixing effect is effectively promoted, so that the micro bubbles in the rich liquid are continuously migrated and aggregated under the action of the rotating turbulence, and finally are separated under the centrifugal field, and CO is completed 2 Desorbing; the lean solution flows from the bottom flow port of the regeneration unit to the lower part of the inner cavity of the regenerator body 510 under the action of gravity, most of the lean solution can flow out from the second liquid outlet 515 of the regenerator at the bottom of the regenerator body 510, so that the regeneration of the absorption solution is realized, and a small part of the lean solution can flow out from the first liquid outlet 514 of the regenerator at the side part of the regenerator body 510 and can be heated again to be reused as hot vapor; acid gas passing through the firstThe second degassing pipe 535 is discharged to the upper part of the inner cavity of the regenerator body 510, and is discharged from the acid gas outlet 511 after demisting by the regenerator demister 520.
In order to facilitate the flow guiding of lean liquid, as shown in fig. 6, a regeneration unit bottom flow pipe 536 is arranged on the regeneration unit bottom flow port, and is communicated with the lower part of the inner cavity of the regenerator body 510 through the regeneration unit bottom flow pipe 536;
in order to prevent condensed absorption liquid in the regenerator demister 520 from dripping from the upper end gas outlet of the second degassing pipe 535 into the regeneration cyclone, CO is affected 2 Is generally provided with a shielding structure at the upper outlet of the second degassing tube 535, for example: the figure 4 "chevron" shelter;
in order to facilitate the condensed absorption liquid in the regenerator demister 520 to be guided to the lower portion of the inner cavity of the regenerator body 510, as further shown in fig. 4, the micro-interface oscillating regenerator further includes a regenerator downcomer 540, wherein the regenerator downcomer 540 is disposed in the inner cavity of the regenerator body 510 and between two adjacent oscillating regeneration units 530, and a plurality of vertical regenerator downcomers 540 may be generally disposed according to the size and actual needs of the regenerator; the upper liquid inlet of the regenerator downcomer 540 corresponds to the air inlet side of the regenerator demister 520, and the lower liquid outlet of the regenerator downcomer 540 is communicated with the lower part of the inner cavity of the regenerator body 510;
In order to facilitate the circulation of the hot vapor in the inner cavity of the regenerator body 510, as further shown in fig. 4, the micro-interface oscillation regenerator further comprises a vent pipe 550, wherein the vent pipe 550 is vertically arranged in the inner cavity of the regenerator body 510 and is positioned at the lower side of the regenerator demister 520; a plurality of ventilation pipes 550 may be generally provided according to the size and actual need of the regenerator.
Preferably, the column cone ratio of the regenerated spinning cavity is controlled to be 2-3:1; the post-taper ratio of the regenerated spinning chamber refers to the height ratio of the second cylindrical chamber 531 to the second conical chamber 532; when the column cone ratio is in the range, the second column cavity 531 is longer, so that the hot vapor and the rich liquid can fully transfer mass; the second conical cavity 532 is shorter, so that the speed of the lean solution flowing out of the regeneration cyclone cavity is increased more quickly, and the oscillation regeneration unit 530 can achieve better CO 2 A desorption effect;
the depth of the second degassing pipe 535 extending into the regeneration rotary cavity is 1/5-3/5 of the height of the second cylindrical cavity 531, and the inner diameter of the second degassing pipe 535 is 1/4-1/3 of the diameter of the second cylindrical cavity 531; therefore, the sour gas in the regenerated cyclone cavity can be ensured to be smoothly discharged, and meanwhile, the interaction between the rich liquid and the hot vapor is basically not influenced;
the cone angle of the second cone-shaped chamber 532 is preferably controlled to be 20-30 degrees, so that the speed of the lean solution flowing out of the regenerated cyclone chamber can be ensured to reach a better state, and the CO is indirectly promoted 2 Is a desorption effect of (a).
The invention also provides a carbon capturing and regenerating system with lower energy consumption, which comprises a raw material gas fan 100 and CO, as shown in the figures 1, 4 and 7 2 Absorber 200, rich liquid pump 310, lean liquid pump 320, first heat exchanger 410, second heat exchanger 420, and absorption liquid regenerator 500; CO 2 Absorber 200 is the above-described micro-interface oscillation absorber, and absorption liquid regenerator 500 is the above-described micro-interface oscillation regenerator;
the gas outlet of the raw gas fan 100 is connected with the raw gas inlet 212 of the micro-interface oscillation absorber;
the absorber liquid outlet 214 of the micro-interface oscillation absorber is connected with the liquid inlet of the rich liquid pump 310, the liquid outlet of the rich liquid pump 310 is connected with the medium inlet of the first heat exchanger 410, and the medium outlet of the first heat exchanger 410 is connected with the regenerator liquid inlet 513 of the micro-interface oscillation regenerator;
the first liquid outlet 514 of the regenerator of the micro-interface oscillation regenerator is connected with the heat exchange inlet of the second heat exchanger 420, the heat exchange outlet of the second heat exchanger 420 is connected with the regenerator air inlet 512 of the micro-interface oscillation regenerator, the medium inlet of the second heat exchanger 420 is connected with the medium outlet of the heat medium source, and the medium outlet of the second heat exchanger 420 is connected with the medium inlet of the cold medium source;
The second liquid outlet 515 of the micro-interface oscillation regenerator is connected with the heat exchange inlet of the first heat exchanger 410, the heat exchange outlet of the first heat exchanger 410 is connected with the liquid inlet of the lean liquid pump 320, and the liquid outlet of the lean liquid pump 320 is connected with the absorber liquid inlet 213 of the micro-interface oscillation absorber.
The feed gas fan 100 is mainly used for conveying feed gas, and it is generally required to ensure that the flow rate of the feed gas reaches: so that the rotational flow can be formed after the rotational flow enters the absorption cyclone-making cavity.
CO 2 Absorber 200 is primarily used to capture CO in a feed gas 2 。
The rich liquid pump 310 is mainly used for conveying rich liquid into the absorption liquid regenerator 500; lean liquid pump 320 is primarily used to deliver CO into 2 In absorber 200.
The first heat exchanger 410 is mainly used for heating the rich liquid by using the residual heat of the lean liquid flowing out of the second liquid outlet 515 of the regenerator before the rich liquid flows into the micro-interface oscillation regenerator from the liquid inlet 513 of the regenerator, so as to increase the temperature of the rich liquid, avoid wasting heat energy, and facilitate desorption of CO 2 。
The second heat exchanger 420 is mainly used for heating the water phase in the lean liquid flowing out from the first liquid outlet 514 of the regenerator into hot vapor by an external heat source so as to transfer heat with the rich liquid to desorb CO 2 。
The first heat exchanger 410 and the second heat exchanger 420 may have various structures, for example: the heat exchange device mainly comprises two heat exchange plates which are symmetrically arranged, wherein a heat exchange channel is arranged between the two heat exchange plates, and the heat exchange channel can be of various structures such as an M shape, a V shape, an S shape and the like.
The heat medium source is mainly used to provide a heat medium, for example: steam; the cold medium source is mainly used for storing cold medium formed after the temperature of the hot medium is reduced, for example: and (5) condensing water.
The absorption liquid regenerator 500 is mainly used for recycling CO in rich liquid 2 Desorbing and regenerating the rich liquid into reabsorbable CO 2 Is not limited.
As shown in fig. 1, 4 and 7, the above carbon capture and regeneration system operates according to the following principle:
feed gas is fed into the CO via feed gas blower 100 2 In the absorber 200, a strong gas-phase swirling flow field is generated in the oscillation absorbing unit 230; meanwhile, under the conveying action of the lean solution pump 320, the high-temperature (compared with the rich solution) lean solution flowing out of the second liquid outlet 515 of the regenerator flows through the first liquid outletIn the heat exchanger 410, heat exchange is performed with the low-temperature (compared with lean liquid) rich liquid flowing out of the absorber liquid outlet 214, and then CO is introduced from the absorber liquid inlet 213 2 In absorber 200, and radially injected into the absorption cyclone chamber from absorption liquid injection holes 234 to absorb CO 2 And is formed as a rich liquid which flows out from the absorber liquid outlet 214 under the action of gravity; CO 2 The absorbed raw material gas is formed into a purified gas and discharged from a purified gas outlet 211;
the low-temperature rich liquid flowing out from the absorber liquid outlet 214 exchanges heat with the high Wen Pinye flowing out from the second liquid outlet 515 of the regenerator when flowing through the first heat exchanger 410 under the conveying action of the rich liquid pump 310, then enters the absorbing liquid regenerator 500 from the liquid inlet 513 of the regenerator, and is radially sprayed into the regenerated cyclone cavity from the regenerated liquid spraying hole 534; meanwhile, the water phase part in the lean liquid flowing out from the first liquid outlet 514 of the regenerator exchanges heat with the heat medium output by the heat medium source to be changed into hot vapor when flowing through the second heat exchanger 420, and enters the regenerating spinning cavity of the oscillation regeneration unit 530 from the air inlet 512 of the regenerator to transfer heat and mass with the injected rich liquid, and desorb CO 2 And is formed into lean solution, the lean solution flows from a bottom flow port of the regeneration unit to the lower part of the inner cavity of the regenerator body 510 under the action of gravity, most of lean solution can flow out from a second liquid outlet 515 of the regenerator at the bottom of the regenerator body 510, regeneration of the absorption solution is realized, and a small part of lean solution (namely, a water phase part in the lean solution) can flow out from a first liquid outlet 514 of the regenerator at the side part of the regenerator body 510; desorbed CO 2 Is sour gas and is discharged from a sour gas outlet 511.
Compared with the traditional filler absorption tower, the carbon capturing and regenerating system for the CO in the flue gas 2 The absorption efficiency is up to more than 98%, and the consumption of the absorption liquid can be reduced by about 80%.
Preferably, as further shown in FIG. 7, the carbon capture and regeneration system further includes a first condenser 610, a second condenser 620, a first separator 710, a second separator 720, and a filter 800;
the purified gas outlet 211 of the micro-interface oscillation absorber is connected with the tangential gas inlet of the first separator 710, and the bottom liquid outlet of the first separator 710 is connected with the liquid inlet of the rich liquid pump 310; the first separator 710 is mainly used for further performing gas-liquid separation on the purified gas discharged from the purified gas outlet 211, so as to reduce the loss of the absorption liquid and reduce the pollution to the environment; the first separator 710 may be of various types, preferably a micro cyclone separator;
The acid gas outlet 511 of the micro-interface oscillation regenerator is connected with the tangential gas inlet of the second separator 720 through the first condenser 610, the bottom liquid outlet of the second separator 720 is connected with the liquid inlet of the lean liquid pump 320, and the liquid outlet of the lean liquid pump 320 is connected with the absorber liquid inlet 213 of the micro-interface oscillation absorber through the second condenser 620; the first condenser 610 is mainly used for reducing the temperature of the acid gas discharged from the acid gas outlet 511 so as to perform gas-liquid separation thereof; the second separator 720 is mainly used for further separating gas from liquid of acid gas to reduce loss of absorption liquid and facilitate CO separation 2 Carrying out utilization and sealing; the second separator 720 may be various, preferably a micro cyclone separator; the second condenser 620 is mainly used for reducing the temperature of the lean solution to facilitate the absorption of CO 2 ；
The filter 800 is connected in parallel to the pipe between the second condenser 620 and the absorber liquid inlet 213, and the filter 800 is mainly used for removing impurities from the lean liquid before the lean liquid flows into the absorber liquid inlet 213, so as to ensure that the whole system continuously and effectively operates; the filter 800 may be various, and is preferably an activated carbon filter with good filtering effect and low cost.
The invention also provides a carbon capturing and regenerating method, which adopts the carbon capturing and regenerating system to capture CO 2 And regenerating the absorption liquid.
Preferably, the above-described carbon capturing and regenerating method includes an apparatus control step including:
controlling the working temperature of the micro-interface oscillation absorber to be not more than 40 ℃, the working pressure to be 20 KPa-6 MPa, and the gas-liquid ratio to be 150-300:1;
the working temperature of the micro-interface oscillation regenerator is controlled to be 110-150 ℃, the working pressure is 1 Kpa-100 Kpa, the gas-liquid ratio is 50-100:1, the temperature of lean liquid flowing out of the second liquid outlet 515 of the regenerator is 110-120 ℃, and the temperature of rich liquid flowing in of the liquid inlet 513 of the regenerator is 90-100 ℃.
The carbon trapping and regenerating method can not only further improve CO trapping by effectively controlling the working parameters of the micro-interface oscillation absorber and the micro-interface oscillation regenerator 2 And the efficiency of absorbing liquid regeneration is ensured, the long-time stable operation of the system is ensured, and the service life of each device in the carbon capturing and regenerating system can be ensured. Compared with the traditional packing type absorption process, the method can reduce the loss of the absorption liquid by more than 70 percent and reduce the energy consumption by more than 40 percent.
Example 1
In a process flow of decarbonization and regeneration of a natural gas liquefaction unit of 1 ten thousand tons/day, the carbon capturing and regenerating method provided by the invention is used for capturing CO in natural gas 2 The efficient regeneration process for removing the absorption liquid is as follows:
(1) Material properties and related parameters
The natural gas is used as raw material gas, and the main components and the volume percentage content thereof are as follows: 94.0% of methane, 1.5% of nitrogen and 4.5% of carbon dioxide; the design temperature of the adopted micro-interface oscillation absorber is 120 ℃, the design pressure is 5.0MPa, and the design gas-liquid ratio is 300:1; the design temperature of the adopted micro-interface oscillation regenerator is 200 ℃, the design pressure is 0.1MPa, and the design gas-liquid ratio is 80:1.
(2) Micro-interface oscillation absorber and size structure of micro-interface oscillation regenerator
Micro-interface oscillation absorber: the absorber body 210 is a cylindrical pressure vessel, is made of 304 stainless steel and has a thickness of 16mm; the absorber body 210 has an inner diameter DN600 and a tangential elevation 2885mm; eight groups of oscillation absorption units 230 which are connected in series every two are arranged in the inner cavity of the absorber body 210, the height of the oscillation absorption units 230 is 850mm, and the column cone ratio of the absorption spinning cavity is 2.35; each oscillation absorbing unit 230 is provided with 10 rows of first liquid ejecting structures, each row of first liquid ejecting structures includes 12 absorbing liquid ejecting holes 234, 120 absorbing liquid ejecting holes 234 in total, and the diameter of the absorbing liquid ejecting holes 234 is 1mm; three supporting plates for fixing and isolating are arranged in the middle of the inner cavity of the absorber body 210, the oscillation absorbing unit 230 is arranged through the three supporting plates, the supporting plates are made of 304SS stainless steel, and the thickness is 10mm; two absorber downcomers 240 penetrating through the three support plates are arranged in the inner cavity of the absorber body 210, the pipe diameter of each absorber downcomer 240 is 79mm, and the absorber downcomers 240 are made of S30508 stainless steel; the demister 220 of the absorber is a baffle plate type demister, the corrugated radian is 100 degrees, the plate spacing is 15mm, and the material is 316L stainless steel.
Micro-interface oscillation regenerator: the regenerator body 510 is a cylindrical pressure vessel, is made of 304 stainless steel and has a thickness of 16mm; the regenerator body 510 has an inner diameter DN600 and a tangential elevation 2885mm; five groups of oscillation regeneration units 530 which are connected in series are arranged in the inner cavity of the regenerator body 510, and the specification and the material of the oscillation regeneration units 530 are the same as those of the oscillation absorption units 230; three support plates for fixing and isolating are arranged in the middle of the inner cavity of the regenerator body 510, the oscillation regeneration unit 530 is arranged through the three support plates, the support plates are made of 304SS stainless steel, and the thickness is 10mm; two regenerator downcomers 540 penetrating through the three support plates and four vent pipes 550 are arranged in the inner cavity of the regenerator body 510, the pipe diameter of the regenerator downcomers 540 is 79mm, and the regenerator downcomers 540 are made of S30408 stainless steel; the pipe diameter of the vent pipe 550 is 120mm, the length is 600mm, and the material is S30508 stainless steel; the regenerator demister 520 is a baffle plate type demister, the corrugated radian is 100 degrees, the plate spacing is 15mm, and the material is 316L stainless steel.
(3) The specific process
The operating pressure of the micro-interface oscillation absorber was maintained at 4.0MPa, the feed gas was fed at a temperature of 30deg.C, a feed pressure of 4.2MPa and 417Nm 3 The flow of/h is driven into a micro-interface oscillation absorber; the absorption liquid is Monoethanolamine (MEA) solution with a feed pressure of 4.2MPa and a feed diameter of 1.5m 3 The flow rate of/h is input into a micro-interface oscillation absorber, and the gas phase and the liquid phase fully react in the oscillation absorption unit 230 to form CO 2 Absorbed by the absorption liquid, the raw material gas is purified and then sequentially passes through the absorber demister 220 and the first separator 710 to realize gas-liquid separation, and is discharged into the atmosphere after reaching the standard through online analysis; at the same time, the rich liquid enters the first heat exchanger 410, is preheated to about 95 ℃ by the regenerated lean liquid of 120 ℃, and is fed at a pressure of 0.2MPa and 1.5m 3 The flow rate of/h is driven into a micro-interface oscillation regenerator which is maintained at the operation pressure of 0.02MPa, and enters an oscillation regeneration unit 530 together with hot vapor, and CO is enabled by heat and mass transfer effect 2 Desorbing and transferring the rich liquid into steam, thereby completing the regeneration of the absorption liquid.
(4) Analysis of results
According to the carbon capturing and regenerating method provided by the invention, CO in natural gas is captured 2 Removal of CO from natural gas 2 The volume fraction is reduced from 4.5% to 23ppm, and the trapping efficiency is as high as 95%. Compared with the traditional packing type absorption process, the method reduces the loss of the absorption liquid by 80 percent and reduces the energy consumption by 40 percent; meanwhile, the device has the characteristic of high gas-liquid ratio, the device height is far lower than that of a traditional plate tower, the device is convenient to maintain, and the manufacturing and using cost is saved.
Example 2
In a technological process of cyclone absorption and regeneration of 5 ten thousand tons/year of flue gas carbon dioxide, the carbon capturing and regenerating method provided by the invention is used for capturing CO in flue gas 2 The efficient regeneration process for removing the absorption liquid is as follows:
(1) Material properties and related parameters
Flue gas is used as raw material gas, wherein CO 2 Is 12% by volume; the design temperature of the adopted micro-interface oscillation absorber is 100 ℃, the design pressure is 50KPa, and the design gas-liquid ratio is 200:1; the design temperature of the adopted micro-interface oscillation regenerator is 200 ℃, the design pressure is 150KPa, and the design gas-liquid ratio is 70:1.
(2) Micro-interface oscillation absorber and size structure of micro-interface oscillation regenerator
Micro-interface oscillation absorber: the absorber body 210 is a cylindrical pressure vessel, is made of 304SS stainless steel and has a thickness of 10mm; the absorber body 210 has an inner diameter DN3200 and a tangential elevation 8700mm; ten groups of parallel oscillation absorption units 230 are arranged in the inner cavity of the absorber body 210, the height of the oscillation absorption units 230 is 2500mm, and the column cone ratio of the absorption spinning cavity is 2.5; each oscillation absorbing unit 230 is provided with 18 rows of first liquid ejecting structures, each row of first liquid ejecting structures comprises 15 absorbing liquid ejecting holes 234, 270 absorbing liquid ejecting holes 234 in total, and the diameter of each absorbing liquid ejecting hole 234 is 0.8mm; three supporting plates for fixing and isolating are arranged in the middle of the inner cavity of the absorber body 210, the oscillation absorbing unit 230 is arranged through the three supporting plates, the supporting plates are made of 304SS stainless steel, and the thickness is 15mm; three absorber downcomers 240 penetrating through the three support plates are arranged in the inner cavity of the absorber body 210, the pipe diameter of each absorber downcomer 240 is 90mm, and the absorber downcomer 240 is made of S30508 stainless steel; the absorber demister 220 is made of 304SS stainless steel and is made of a wire mesh demister and a wire mesh module with diameters of 1 mm.
Micro-interface oscillation regenerator: the regenerator body 510 is a cylindrical pressure vessel, is made of 304ss stainless steel and has a thickness of 10mm; the regenerator body 510 has an inner diameter DN1800 and a tangential elevation of 5900mm; five groups of oscillation regeneration units 530 which are connected in series are arranged in the inner cavity of the regenerator body 510, and the specification and the material of the oscillation regeneration units 530 are the same as those of the oscillation absorption units 230; three support plates for fixing and isolating are arranged in the middle of the inner cavity of the regenerator body 510, the oscillation regeneration unit 530 is arranged through the three support plates, the support plates are made of 304SS stainless steel, and the thickness is 15mm; three regenerator downcomers 540 penetrating through the three support plates and five vent pipes 550 are arranged in the inner cavity of the regenerator body 510, the pipe diameter of the regenerator downcomers 540 is 90mm, and the regenerator downcomers are made of S30508 stainless steel; the pipe diameter of the vent pipe 550 is 325mm, the length is 830mm, and the material is S30508 stainless steel; the regenerator demister 520 is made of 304SS stainless steel, and is a wire mesh demister and a wire mesh module with diameters of 1 mm.
(3) The specific process
Maintaining the operating pressure of the micro-interface oscillation absorber at 30KPa, feed gas at 40℃feed temperature, 50KPa feed pressure and 29465Nm 3 The flow of/h is driven into a micro-interface oscillation absorber; the absorption liquid is an amino functional ionic liquid, and the feeding pressure is 250KPa and 150m 3 The flow rate of/h is input into a micro-interface oscillation absorber, and the gas phase and the liquid phase fully react in the oscillation absorption unit 230 to form CO 2 Absorbed by the absorption liquid, and the raw gas is purified and then sequentially passes through the absorber demister 220 and the first separator710, after gas-liquid separation is realized, discharging the gas into the atmosphere after the gas-liquid separation reaches the standard through online analysis; at the same time, the rich liquid enters the first heat exchanger 410, is preheated to about 90 ℃ by the regenerated lean liquid of 120 ℃, and is fed at a pressure of 250KPa and 150m 3 The flow rate of/h is driven into a micro-interface oscillation regenerator which is maintained at the operation pressure of 100KPa, and enters an oscillation regeneration unit 530 together with hot steam, and CO is enabled to be generated through the heat and mass transfer effect 2 Desorbing and transferring the rich liquid into steam, thereby completing the regeneration of the absorption liquid.
(4) Analysis of results
According to the carbon capturing and regenerating method provided by the invention, CO in the flue gas is captured 2 Removing CO in the flue gas 2 The content is reduced from 12% to 1%, and the trapping efficiency is as high as 92%. Compared with the traditional packing type absorption process, the method reduces the loss of the absorption liquid by 70 percent and reduces the energy consumption by 40 percent; meanwhile, the device has high gas-liquid ratio, the device height is far lower than that of the traditional plate tower, the device is convenient to maintain, and the device investment is reduced by 70%.
Claims (10)
1. The micro-interface oscillation absorber is characterized in that: comprises an absorber body (210), an absorber defogging device (220) and an oscillation absorption unit (230);
the top of the absorber body (210) is provided with a purified gas outlet (211), the side part of the absorber body is provided with a raw gas inlet (212) and an absorber liquid inlet (213), and the bottom of the absorber body is provided with an absorber liquid outlet (214);
the absorber demister (220) is arranged in the inner cavity of the absorber body (210), and the air outlet side of the absorber demister corresponds to the purified air outlet (211);
the oscillation absorption unit (230) is arranged in the inner cavity of the absorber body (210) and is positioned at the lower side of the absorber defogging device (220); at least two oscillation absorption units (230) are uniformly distributed around the central line of the absorber body (210);
the vibration absorption unit (230) comprises an absorption unit main body which is vertically arranged, the absorption unit main body is of a cylindrical structure with a closed upper end, an inner cavity of the absorption unit main body is an absorption rotation-making cavity, and the absorption rotation-making cavity mainly comprises a first columnar cavity (231) and a first conical cavity (232) which are communicated up and down;
an absorption unit air inlet (233) is formed in the side wall of the absorption unit main body, and the inflow direction of the absorption unit air inlet (233) is tangential to the absorption swirl making cavity and is communicated with the raw gas air inlet (212);
At least two first liquid spraying structures are arranged on the side wall of the absorption unit main body at the lower side of the absorption unit air inlet (233), each first liquid spraying structure comprises at least two absorption liquid spraying holes (234) which are uniformly distributed along the circumferential direction of the absorption unit main body, and each absorption liquid spraying hole (234) is respectively communicated with the absorber liquid inlet (213);
a first degassing pipe (235) is arranged on the absorption unit main body along the central line of the absorption unit main body, an air outlet at the upper end of the first degassing pipe (235) corresponds to the air inlet side of the absorber demister device (220), and an air inlet at the lower end of the first degassing pipe penetrates into the absorption cyclone cavity from the central part of the upper end of the absorption unit main body and extends to the lower sides of all absorption liquid spraying holes (234);
the lower end opening of the first conical cavity (232) is an absorption unit underflow opening, and the absorption unit underflow opening is communicated with the lower part of the inner cavity of the absorber body (210).
2. The micro-interface oscillation absorber of claim 1 wherein: also included is an absorber downcomer (240);
an absorption unit underflow pipe (236) is arranged on the absorption unit underflow port and is communicated with the lower part of the inner cavity of the absorber body (210) through the absorption unit underflow pipe (236);
the absorber downcomer (240) is arranged in the inner cavity of the absorber body (210) and is positioned between two adjacent oscillation absorption units (230), the liquid inlet at the upper end of the absorber downcomer corresponds to the air inlet side of the absorber demister (220), and the liquid outlet at the lower end of the absorber downcomer is communicated with the lower part of the inner cavity of the absorber body (210).
3. The micro-interface oscillation absorber of claim 1 or 2, wherein: the column cone ratio of the absorption spinning cavity is 2-3:1;
the depth of the first degassing pipe (235) extending into the absorption rotation-making cavity is 1/5-3/5 of the height of the first columnar cavity (231), and the inner diameter of the first degassing pipe (235) is 1/4-1/3 of the diameter of the first columnar cavity (231);
the taper angle of the first taper cavity (232) is 20-30 degrees.
4. The micro-interface oscillation regenerator is characterized in that: comprises a regenerator body (510), a regenerator defogging device (520) and an oscillation regeneration unit (530);
the top of the regenerator body (510) is provided with an acid gas outlet (511), the side part of the regenerator body is provided with a regenerator gas inlet (512), a regenerator liquid inlet (513) and a regenerator first liquid outlet (514), and the bottom of the regenerator body is provided with a regenerator second liquid outlet (515);
the demisting device (520) of the regenerator is arranged in the inner cavity of the regenerator body (510), and the air outlet side of the demisting device corresponds to the acid gas outlet (511);
the oscillation regeneration unit (530) is arranged in the inner cavity of the regenerator body (510) and is positioned at the lower side of the regenerator defogging device (520); at least two oscillation regeneration units (530) are uniformly distributed around the central line of the regenerator body (510);
The oscillation regeneration unit (530) comprises a regeneration unit main body which is vertically arranged, the regeneration unit main body is of a cylindrical structure with a closed upper end, an inner cavity of the regeneration unit main body is a regeneration rotary cavity, and the regeneration rotary cavity mainly comprises a second cylindrical cavity (531) and a second conical cavity (532) which are communicated up and down;
a regeneration unit air inlet (533) is arranged on the side wall of the regeneration unit main body, and the inflow direction of the regeneration unit air inlet (533) is tangential to the regeneration swirl generating cavity and is communicated with the regenerator air inlet (512);
at least two second liquid spraying structures are arranged on the side wall of the regeneration unit main body at the lower side of the regeneration unit air inlet (533), each second liquid spraying structure comprises at least two regeneration liquid spraying holes (534) which are uniformly distributed along the circumferential direction of the regeneration unit main body, and each regeneration liquid spraying hole (534) is respectively communicated with the regenerator liquid inlet (513);
a second degassing pipe (535) is arranged on the regeneration unit main body along the central line of the regeneration unit main body, an air outlet at the upper end of the second degassing pipe (535) corresponds to the air inlet side of the demister (520) of the regenerator, and an air inlet at the lower end of the second degassing pipe penetrates into the regeneration spinning cavity from the central part of the upper end of the regeneration unit main body and extends to the lower sides of all regeneration liquid spraying holes (534);
The lower end opening of the second conical cavity (532) is a regeneration unit underflow opening, and the regeneration unit underflow opening is communicated with the lower part of the inner cavity of the regenerator body (510).
5. The micro-interface oscillation regenerator of claim 4 wherein: also included are regenerator downcomers (540) and vent tubes (550);
the regeneration unit underflow opening is provided with a regeneration unit underflow pipe (536), and is communicated with the lower part of the inner cavity of the regenerator body (510) through the regeneration unit underflow pipe (536);
the regenerator downcomer (540) is arranged in the inner cavity of the regenerator body (510) and is positioned between two adjacent oscillation regeneration units (530), the liquid inlet at the upper end of the regenerator downcomer corresponds to the air inlet side of the demister (520) of the regenerator, and the liquid outlet at the lower end of the regenerator downcomer is communicated with the lower part of the inner cavity of the regenerator body (510);
the breather pipe (550) is vertically arranged in the inner cavity of the regenerator body (510) and is positioned at the lower side of the regenerator demister (520).
6. The micro-interface oscillation regenerator of claim 4 or 5, wherein: the column cone ratio of the regeneration spinning cavity is 2-3:1;
the depth of the second degassing pipe (535) extending into the regeneration rotary cavity is 1/5-3/5 of the height of the second cylindrical cavity (531), and the inner diameter of the second degassing pipe (535) is 1/4-1/3 of the diameter of the second cylindrical cavity (531);
The taper angle of the second taper cavity (532) is 20-30 degrees.
7. The carbon capturing and regenerating system comprises a raw material gas fan (100) and CO 2 Absorber (200), rich liquid pump (310), lean liquid pump (320), first heat exchanger (410), second heat exchanger (420), and suctionA liquid recovery regenerator (500); the method is characterized in that: the CO 2 The absorber (200) is a micro-interface oscillation absorber according to any one of claims 1 to 3, and the absorption liquid regenerator (500) is a micro-interface oscillation regenerator according to any one of claims 4 to 6;
the gas outlet of the raw material gas fan (100) is connected with the raw material gas inlet (212) of the micro-interface oscillation absorber;
an absorber liquid outlet (214) of the micro-interface oscillation absorber is connected with a liquid inlet of a rich liquid pump (310), a liquid outlet of the rich liquid pump (310) is connected with a medium inlet of a first heat exchanger (410), and a medium outlet of the first heat exchanger (410) is connected with a regenerator liquid inlet (513) of the micro-interface oscillation regenerator;
the first liquid outlet (514) of the micro-interface oscillation regenerator is connected with the heat exchange inlet of a second heat exchanger (420), the heat exchange outlet of the second heat exchanger (420) is connected with the regenerator air inlet (512) of the micro-interface oscillation regenerator, the medium inlet of the second heat exchanger (420) is connected with the medium outlet of a heat medium source, and the medium outlet of the second heat exchanger (420) is connected with the medium inlet of a cold medium source;
The second liquid outlet (515) of the micro-interface oscillation regenerator is connected with the heat exchange inlet of the first heat exchanger (410), the heat exchange outlet of the first heat exchanger (410) is connected with the liquid inlet of the lean liquid pump (320), and the liquid outlet of the lean liquid pump (320) is connected with the absorber liquid inlet (213) of the micro-interface oscillation absorber.
8. The carbon capture and regeneration system of claim 7, wherein: also included are a first condenser (610), a second condenser (620), a first separator (710), a second separator (720), and a filter (800);
the purified gas outlet (211) of the micro-interface oscillation absorber is connected with the tangential gas inlet of the first separator (710), and the bottom liquid outlet of the first separator (710) is connected with the liquid inlet of the rich liquid pump (310);
the acid gas outlet (511) of the micro-interface oscillation regenerator is connected with the tangential gas inlet of the second separator (720) through the first condenser (610), the bottom liquid outlet of the second separator (720) is connected with the liquid inlet of the lean liquid pump (320), and the liquid outlet of the lean liquid pump (320) is connected with the absorber liquid inlet (213) of the micro-interface oscillation absorber through the second condenser (620);
the filter (800) is connected in parallel to the conduit between the second condenser (620) and the absorber liquid inlet (213).
9. The carbon capturing and regenerating method is characterized in that: the method uses the carbon capture and regeneration system of claim 7 or 8 to capture CO 2 And regenerating the absorption liquid.
10. The carbon capture and regeneration method of claim 9, wherein: comprising a device control step comprising:
controlling the working temperature of the micro-interface oscillation absorber to be not more than 40 ℃, the working pressure to be 20 KPa-6 MPa, and the gas-liquid ratio to be 150-300:1;
the working temperature of the micro-interface oscillation regenerator is controlled to be 110-150 ℃, the working pressure is 1-100 Kpa, the gas-liquid ratio is 50-100:1, the temperature of lean liquid flowing out of the second liquid outlet (515) of the regenerator is 110-120 ℃, and the temperature of rich liquid flowing in of the liquid inlet (513) of the regenerator is 90-100 ℃.
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| CN202310171852.6A CN116272315A (en) | 2023-02-27 | 2023-02-27 | Micro-interface oscillation absorber, regenerator, carbon capture and regeneration system and method |
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