CN219682132U - Desorber and system for catalytically desorbing carbon dioxide - Google Patents
Desorber and system for catalytically desorbing carbon dioxide Download PDFInfo
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- CN219682132U CN219682132U CN202320811280.9U CN202320811280U CN219682132U CN 219682132 U CN219682132 U CN 219682132U CN 202320811280 U CN202320811280 U CN 202320811280U CN 219682132 U CN219682132 U CN 219682132U
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- stirring
- desorption
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- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 title claims abstract description 40
- 229910002092 carbon dioxide Inorganic materials 0.000 title claims abstract description 20
- 239000001569 carbon dioxide Substances 0.000 title claims abstract description 20
- 239000007788 liquid Substances 0.000 claims abstract description 134
- 150000001412 amines Chemical class 0.000 claims abstract description 131
- 238000003795 desorption Methods 0.000 claims abstract description 90
- 238000003756 stirring Methods 0.000 claims abstract description 75
- 238000006243 chemical reaction Methods 0.000 claims abstract description 69
- 238000012856 packing Methods 0.000 claims abstract description 56
- 239000000945 filler Substances 0.000 claims abstract description 33
- 238000001704 evaporation Methods 0.000 claims description 6
- 230000008020 evaporation Effects 0.000 claims description 6
- 230000003197 catalytic effect Effects 0.000 claims description 5
- 238000000034 method Methods 0.000 abstract description 16
- 239000003054 catalyst Substances 0.000 abstract description 10
- 230000009467 reduction Effects 0.000 abstract description 7
- 230000008569 process Effects 0.000 abstract description 6
- 239000002250 absorbent Substances 0.000 abstract description 5
- 230000002745 absorbent Effects 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 5
- 230000006872 improvement Effects 0.000 abstract description 4
- 230000004888 barrier function Effects 0.000 abstract description 3
- 239000007789 gas Substances 0.000 description 8
- 238000001514 detection method Methods 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- HZAXFHJVJLSVMW-UHFFFAOYSA-N 2-Aminoethan-1-ol Chemical compound NCCO HZAXFHJVJLSVMW-UHFFFAOYSA-N 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 4
- 230000008929 regeneration Effects 0.000 description 4
- 238000011069 regeneration method Methods 0.000 description 4
- 238000005070 sampling Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- CNPURSDMOWDNOQ-UHFFFAOYSA-N 4-methoxy-7h-pyrrolo[2,3-d]pyrimidin-2-amine Chemical compound COC1=NC(N)=NC2=C1C=CN2 CNPURSDMOWDNOQ-UHFFFAOYSA-N 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- ZBCBWPMODOFKDW-UHFFFAOYSA-N diethanolamine Chemical compound OCCNCCO ZBCBWPMODOFKDW-UHFFFAOYSA-N 0.000 description 2
- 239000003546 flue gas Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- CRVGTESFCCXCTH-UHFFFAOYSA-N methyl diethanolamine Chemical compound OCCN(C)CCO CRVGTESFCCXCTH-UHFFFAOYSA-N 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 239000010865 sewage Substances 0.000 description 2
- 239000000779 smoke Substances 0.000 description 2
- 230000001502 supplementing effect Effects 0.000 description 2
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- 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
Landscapes
- Gas Separation By Absorption (AREA)
Abstract
The present disclosure relates to a desorption tower and system for catalytically desorbing carbon dioxide, the desorption tower comprising a rich liquid inlet, an amine liquid outlet, an amine steam inlet, a filler unit, an amine liquid reaction chamber and a reaction stirring device; the reaction stirring device is arranged in the amine liquid reaction chamber and is used for stirring in the contact reaction of the amine liquid and the filler. The desorber of the present disclosure facilitates a desorberInner packing, catalyst and tower inner CO-enriched 2 The full contact and reaction of amine liquid, the improvement of reaction rate, the reduction of reaction barrier, the further improvement of desorption effect of desorbing carbon dioxide, less heat required in the desorption process, and the reduction of the desorption temperature of the organic amine absorbent, so that the desorption temperature is reduced from 105-120 ℃ to 75-98 ℃ in the conventional MEA desorption method, and the desorption temperature is obviously reduced.
Description
Technical Field
The present disclosure relates to the field of carbon dioxide capture, and in particular, to a desorption tower and system for catalytically desorbing carbon dioxide.
Background
The existing low-concentration carbon dioxide trapping technology mainly comprises a chemical absorption method, a physical absorption method, a membrane separation method, a cryogenic separation method and the like, wherein the chemical absorption method is basically mature at present and is in an industrial demonstration stage, and chemical reagent and CO are utilized 2 Chemical reaction between them will CO 2 As a method for separating the smoke, monoethanolamine (MEA), diethanolamine (DEA), methyldiethanolamine (MDEA), complex amine, sterically hindered amine and the like are commonly used. The conventional desorption method of rich liquid includes thermal desorption, membrane desorption and depressurization desorption, and the present chemical absorption method uses thermal desorption method, and its principle is that the rich liquid is fed into desorption equipment and heated to above 100 deg.C so as to make CO 2 And (5) fully desorbing. The main equipment is a desorption tower, and a filler is arranged in the desorption tower so as to increase the contact area. The conventional packing tower adopts regular packing and random packing, the general packing is required to increase heat and mass transfer area, the flux of the packing is large, the resistance is small, the porosity of the packing is high, the specific surface area is large, and the surface also has better wettability.
However, the main problems faced by the prior art include high heat consumption in the desorption regeneration process, thereby affecting large-scale popularization and application.
Disclosure of Invention
The object of the present disclosure is to provide a desorption column and a system of a catalytic desorption oxidation column, which can increase the reaction rate of a desorption reaction and reduce the desorption temperature of an organic amine absorbent.
In order to achieve the above object, a first aspect of the present disclosure provides a desorption column for catalytically desorbing carbon dioxide, the desorption column including a rich liquid inlet, an amine liquid outlet, an amine vapor inlet, a packing unit, an amine liquid reaction chamber, and a reaction stirring device; the reaction stirring device is arranged in the amine liquid reaction chamber and is used for stirring in the contact reaction of the amine liquid and the filler.
Optionally, the packing unit comprises a plurality of packing layers arranged at intervals; the distance between two adjacent packing layers is 1-6 m.
Optionally, the packing unit includes a first packing layer, a second packing layer, and a third packing layer; the top of each packing layer is provided with a packing pressing ring, and the bottom of each packing layer is provided with a packing support piece.
Optionally, the desorber comprises a liquid distributor and a filter screen; the liquid distributor is arranged at the top of the filling unit; the filter screen is arranged at the upper part of the liquid distributor.
Optionally, the liquid distributor is a trough-tray liquid distributor.
Optionally, the reaction stirring device comprises a stirring paddle, the desorption tower is provided with a stirring port, the stirring paddle comprises a stirring rod and stirring paddles which are connected, and the stirring rod extends into the tower from the outside of the tower from the stirring port of the desorption tower so that the stirring paddles are positioned in the amine liquid reaction chamber of the desorption tower; and a part of the stirring rod is positioned outside the desorption tower so as to be connected with the motor.
Optionally, the height of the amine liquid reaction chamber is 0.5-5 m, the stirring port is arranged on the tower wall of the amine liquid reaction chamber, and the height distance between the stirring port and the bottom of the lower end enclosure of the desorption tower is 0.5-2 m.
Optionally, the amine liquid reaction chamber comprises a thermosiphon liquid return port, a flash vapor inlet, a boiler port and an amine vapor port; the amine liquid outlet, the thermosiphon liquid return port and the amine steam inlet are sequentially and longitudinally arranged on the tower wall of the amine liquid reaction chamber;
the flash evaporation steam inlet and the amine steam inlet are arranged in the same horizontal direction;
the amine liquid outlet is 0.1-2 m higher than the amine steam inlet; the thermosiphon liquid return port is 0.2-2 m higher than the amine steam inlet;
the boiler interface is arranged at the lower part of the flash evaporation steam inlet, and the distance from the flash evaporation steam inlet is 0.5-2 m.
Optionally, the desorber is provided with stirring ports, and the stirring ports are arranged below the amine steam ports at intervals of 0.3-1 m.
A second aspect of the present disclosure provides a system for catalytically desorbing carbon dioxide, the system comprising a desorber and a boiler according to the first aspect of the present disclosure; the boiler is provided with a first inlet and a first outlet; the first outlet of the boiler is communicated with the amine steam inlet of the desorption tower, and the first inlet of the boiler is communicated with the amine liquid outlet of the desorption tower; the boiler is configured to provide heat to the desorber; the desorber is configured to be rich in CO using packing 2 The amine liquid is subjected to catalytic desorption.
Through the technical scheme, the desorber is provided with the reaction stirring device in the amine liquid reaction chamber, so that the filling material, the catalyst and the CO-rich gas in the desorber are facilitated 2 The full contact and reaction of amine liquid, the improvement of reaction rate, the reduction of reaction barrier, the further improvement of desorption effect of desorption carbon dioxide, the reduction of heat required in the desorption process, and the reduction of the desorption temperature of the organic amine absorbent, the reduction of the desorption temperature from 105-120 ℃ to 75-98 ℃ of the conventional MEA desorption method, and the obvious reduction of the desorption temperature.
Additional features and advantages of the present disclosure will be set forth in the detailed description which follows.
Drawings
The accompanying drawings are included to provide a further understanding of the disclosure, and are incorporated in and constitute a part of this specification, illustrate the disclosure and together with the description serve to explain, but do not limit the disclosure. In the drawings:
fig. 1 is a schematic structural diagram of a desorption column for catalytically desorbing carbon dioxide provided by the present disclosure.
Fig. 2 is a schematic structural diagram of a system for catalytically desorbing carbon dioxide provided by the present disclosure.
Description of the reference numerals
1: a wire mesh demister; 2: a liquid distributor; 3: packing pressing ring; 4: a filler unit; 5: a filter screen; 7: a filler support; 8: a reaction stirring device; 9: a tube distributor; a: a step flow inlet; a: a rich liquid inlet; b: an amine liquid outlet; c: a lean liquid outlet; d: a regeneration gas outlet; e: an amine vapor inlet; f: a fluid supplementing port; g: a pressure relief port; h: an amine vapor port; i: flash steam inlet; k: a sewage outlet; l: a manhole; m: an automatic level gauge interface; n: a field level gauge interface; o: a boiler interface; and p: a temperature detection port; q: a pressure detection port; s: a sampling port; t: a thermosiphon liquid return port; u: a smoke test port; 11: a desorption tower; 12: a boiler; 13: a liquid inlet of the desorption tower; 14: a catalyst inlet; 15: a catalyst outlet; 16: an external steam inlet; 17: a condensed water outlet; 18: a sewage outlet of the boiler.
Detailed Description
Specific embodiments of the present disclosure are described in detail below with reference to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating and illustrating the disclosure, are not intended to limit the disclosure.
A first aspect of the present disclosure provides a desorber for catalytically desorbing carbon dioxide, the desorber comprising a rich liquid inlet a, an amine liquid outlet b, an amine vapor inlet e, a packing unit 4, an amine liquid reaction chamber, and a reaction stirring device 8; the reaction stirring device 8 is arranged in the amine liquid reaction chamber and is used for stirring in the contact reaction of the amine liquid and the filler.
The desorber comprises a reaction stirring device, is beneficial to catalyst, filler and CO-rich in the tower in an amine liquid reaction chamber 2 And the full contact and reaction of the amine liquid further improves the desorption effect of desorbing the carbon dioxide.
According to one embodiment of the present disclosure, the packing unit 4 includes a plurality of packing layers disposed at intervals; the distance between two adjacent filler layers is 1-6 m. In a further embodiment, the filler layers include a first filler layer, a second filler layer, and a third filler layer; the top of each packing layer is provided with a packing pressing ring 3, the bottom is provided with a packing support piece 7, and the packing layer is filled with packing.
According to one embodiment of the present disclosure, the desorber comprises a liquid distributor 2 and a screen 5; the liquid distributor 2 is arranged at the top of the packing unit 4; a screen 5 is provided at the upper part of the liquid distributor 2. In a further embodiment, the liquid distributor 2 is a trough-tray liquid distributor. In one embodiment, the pore size of the screen 5 may be selected based on the particle size of the catalyst and filler particles. The embodiment described above is beneficial for CO enrichment 2 The amine liquid is uniformly distributed on the filler, and meanwhile, the filler in the filler layer is prevented from leaking into other filler layers, so that the CO-rich in each filler layer is ensured 2 The amine liquid is fully contacted with the filler.
According to one embodiment of the disclosure, the reaction stirring device 8 comprises a stirring paddle, the desorption tower is provided with a stirring port, the stirring paddle comprises a stirring rod and stirring paddles which are connected, and the stirring rod extends into the tower from the outside of the tower from the stirring port of the desorption tower so that the stirring paddles are positioned in the amine liquid reaction chamber of the desorption tower; a part of the stirring rod is positioned outside the desorption tower to be connected with the motor. In a further embodiment, the height of the amine liquid reaction chamber is 0.5-5 m, the stirring opening is arranged on the tower wall of the amine liquid reaction chamber, and the height distance from the stirring opening to the bottom of the lower end enclosure of the desorption tower is 0.5-2 m.
According to one embodiment of the disclosure, the desorption tower comprises a lean solution outlet c, wherein the lean solution outlet c is arranged below the amine solution reaction chamber, and the height distance from the lean solution outlet c to the bottom of the lower end enclosure of the desorption tower is 0.1-1 m.
According to one embodiment of the present disclosure, the amine liquid reaction chamber includes a thermosiphon liquid return port T, a flash vapor inlet port i, a boiler port o, and an amine vapor port h.
In a specific embodiment, the amine liquid outlet b, the thermosiphon liquid return port T and the amine steam inlet e are sequentially and longitudinally arranged on the tower wall of the amine liquid reaction chamber; the flash steam inlet i and the amine steam inlet h are arranged in the same horizontal direction; the amine liquid outlet b is 0.1-2 m higher than the amine steam inlet e; the thermosiphon liquid return port T is 0.2-2 m higher than the amine steam inlet e; the boiler interface o is arranged at the lower part of the flash steam inlet i, and the distance from the flash steam inlet i is 0.5-2 m. The embodiment is beneficial to improving the desorption effect of desorbing carbon dioxide and further reducing the desorption temperature of the organic amine absorbent.
According to one embodiment of the disclosure, the desorber is provided with stirring ports, which are arranged below the amine vapor ports h, with a spacing of 0.3-1 m.
According to one embodiment of the disclosure, the desorber further comprises a wire mesh demister 1, a tubular distributor 9, a staged flow inlet a, a regeneration gas outlet d, a liquid supplementing port f, a pressure relief port g, a drain port k, a temperature detection port p, a pressure detection port q, a sampling port s and a flue gas testing port U. The wire mesh demister 1 is arranged at the top of the desorption tower to reduce CO enrichment 2 Volatilization of amine liquid and regenerated gas CO 2 Carrying CO-rich during discharge 2 Amine liquid for reducing CO-rich content 2 Loss of amine liquid. A pipe distributor 9 is arranged above the packing unit 4 to facilitate the enrichment of CO 2 The amine liquid is uniformly distributed on the filler.
A second aspect of the present disclosure provides a system for catalytically desorbing carbon dioxide, as shown in fig. 2, comprising a desorber 11 and a boiler 12 of the first aspect of the present disclosure; the boiler 12 is provided with a first inlet and a first outlet; the first outlet of the boiler 12 is communicated with an amine steam inlet e of the desorption tower 11, and the first inlet of the boiler 12 is communicated with an amine liquid outlet b of the desorption tower 11; the boiler 12 is configured to provide heat to the desorber 11; the desorber 11 is configured to be rich in CO using packing 2 The amine liquid is subjected to catalytic desorption.
The wire mesh demister and tubular distributor referred to in this disclosure are devices of conventional construction in the art. The device structure involved in the present disclosure, such as a wire mesh demister, a tubular distributor, a staged flow inlet, a regeneration gas outlet, a make-up inlet, a pressure relief inlet, a drain outlet, a temperature detection inlet, a pressure detection inlet, a sampling inlet, a flue gas test inlet, an external steam inlet, and a condensate outlet, is not improved.
The specific process flow for adopting the system shown in fig. 2 of the present disclosure comprises: external steam first enters the boiler 12 through the external steam inlet 16, and then the partial CO-rich part in the desorber 11 2 The amine liquid enters the boiler 12 through the amine liquid outlet b, and the CO is enriched through indirect heat exchange 2 The temperature of the amine liquid is increased, then the amine steam after indirect heat exchange enters the desorption tower 11 through an amine steam inlet e, and CO is enriched in the desorption tower 11 2 The amine liquid and the filler are fully contacted and reacted under the stirring of a reaction stirring device 8, the amine liquid and the filler are desorbed into lean liquid under the action of a catalyst, the lean liquid is discharged out of a desorption tower 11 through a lean liquid outlet c, and the desorbed CO 2 The vapor in the boiler 12 is condensed into condensed water which is discharged out of the desorption tower 11 through the regenerated gas outlet d and is discharged out of the system through the condensed water outlet 17.
The present disclosure is further illustrated by the following examples, but the present disclosure is not limited thereby.
Example 1
As shown in fig. 1, a wire mesh demister 1 is arranged at the top of a desorption tower to reduce rich CO 2 Volatilization of amine liquid and regenerated gas CO 2 Carrying CO-rich during discharge 2 Amine liquid for reducing CO-rich content 2 Loss of amine liquid, a tubular distributor 9 is arranged above each packing layer to promote CO enrichment 2 The amine liquid is uniformly distributed on the filler; the packing unit 4 comprises a first packing layer, a second packing layer and a third packing layer; the top of each packing layer is provided with a packing pressing ring 3, the bottom of each packing layer is provided with a packing support piece 7, and the packing layers are filled with packing; the distance between two adjacent filler layers is 1-6 meters; the liquid distributor 2 is a trough-disk type liquid distributor, which is beneficial to CO enrichment 2 The amine liquid is uniformly distributed on the filler; the filter screen 5 is arranged at the upper part of the liquid distributor 2 to avoid the flow of the filling materials in the tower; the reaction stirring device 8 comprises a stirring paddle, the desorption tower is provided with a stirring port, the stirring paddle comprises a stirring rod and stirring paddles which are connected, and the stirring rod extends into the tower from the outside of the tower from the stirring port of the desorption tower so that the stirring paddles are positioned in an amine liquid reaction chamber of the desorption tower; a part of the stirring rod is positioned outside the desorption tower to be connected with the motor; the height of the amine liquid reaction chamber is 0.5-5 m, and the stirring port is arranged in the amine liquid reaction chamberThe height distance between the stirring port and the bottom of the lower end enclosure of the desorption tower is 0.5-2 m; the amine liquid outlet b, the thermosiphon liquid return port T and the amine steam inlet e are sequentially and longitudinally arranged on the tower wall of the amine liquid reaction chamber; the flash steam inlet i and the amine steam inlet h are arranged in the same horizontal direction; the amine liquid outlet b is 0.1-2 m higher than the amine steam inlet e; the thermosiphon liquid return port T is 0.2-2 m higher than the amine steam inlet e; the boiler interface o is arranged at the lower part of the flash steam inlet i, and the distance from the flash steam inlet i is 0.5-2 m; the stirring port is arranged below the amine steam port h, and the interval is 0.3-1 m.
In particular, rich in CO 2 The amine liquid enters the tower body of the desorption tower through the graded flow liquid inlet A and the rich liquid inlet a, and enters the amine liquid reaction chamber through the filler unit 4, and part of the amine liquid is rich in CO 2 The amine liquid enters the boiler through the amine liquid outlet b, the amine steam enters the desorption tower through the amine steam inlet e after indirect heat exchange, and the CO in the amine liquid reaction chamber is enriched through the reaction stirring device 8 2 The amine liquid fully contacts and reacts with the catalyst and the filler, and the desorption occurs along the height direction of the tower, so that the released CO is released 2 The lean solution after desorption is discharged through a lean solution outlet c.
Example 2
As shown in fig. 2, the system for catalytically desorbing carbon dioxide provided by the present disclosure includes a desorber 11 and a boiler 12, the boiler 12 being provided with a first inlet and a first outlet; the first outlet of the boiler 12 is communicated with an amine steam inlet e of the desorption tower 11, and the first inlet of the boiler 12 is communicated with an amine liquid outlet b of the desorption tower 11; the specific structure of the desorption column 11 is the same as that of example 1. The specific process flow adopting the system disclosed by the utility model comprises the following steps: external steam first enters the boiler 12 through the external steam inlet 16, and then the partial CO-rich part in the desorber 11 2 The amine liquid enters the boiler 12 through the amine liquid outlet b, and the CO is enriched through indirect heat exchange 2 The temperature of the amine liquid is increased, then the amine steam after indirect heat exchange enters the desorption tower 11 through an amine steam inlet e, and CO is enriched in the desorption tower 11 2 The amine liquid and the filler are fully contacted and reacted under the stirring of the reaction stirring device 8, the reaction stirring device 8 can be a stirring paddle, and meanwhile, the amine liquid and the filler are desorbed into lean liquid under the action of the catalyst and are discharged through a lean liquid outlet cOut of the desorption tower 11, and desorbed CO 2 The vapor in the boiler 12 is condensed into condensed water which is discharged out of the desorption tower 11 through the regenerated gas outlet d and is discharged out of the system through the condensed water outlet 17.
The desorber improves the CO enrichment in the reaction chamber of the filler, the catalyst and the amine liquid in the desorber 2 The full contact and reaction of the amine liquid can improve the reaction rate, reduce the reaction barrier and further improve the desorption effect of desorption carbon dioxide; the heat quantity in the desorption process is reduced, the desorption temperature of the organic amine absorbent is reduced, the desorption temperature is reduced from 105-120 ℃ to 75-98 ℃ in the conventional MEA desorption method, and the desorption temperature is obviously reduced.
The preferred embodiments of the present disclosure have been described in detail above with reference to the accompanying drawings, but the present disclosure is not limited to the specific details of the above embodiments, and various simple modifications may be made to the technical solutions of the present disclosure within the scope of the technical concept of the present disclosure, and all the simple modifications belong to the protection scope of the present disclosure.
In addition, the specific features described in the above embodiments may be combined in any suitable manner without contradiction. The various possible combinations are not described further in this disclosure in order to avoid unnecessary repetition.
Moreover, any combination between the various embodiments of the present disclosure is possible as long as it does not depart from the spirit of the present disclosure, which should also be construed as the disclosure of the present disclosure.
Claims (10)
1. A desorption tower for catalyzing and desorbing carbon dioxide, which is characterized by comprising a rich liquid inlet (a), an amine liquid outlet (b), an amine steam inlet (e), a filler unit (4), an amine liquid reaction chamber and a reaction stirring device (8); the reaction stirring device (8) is arranged in the amine liquid reaction chamber and is used for stirring in the contact reaction of the amine liquid and the filler.
2. The desorber column according to claim 1, characterized in that the packing unit (4) comprises a plurality of spaced apart packing layers; the distance between two adjacent packing layers is 1-6 m.
3. The desorber according to claim 1, characterized in that the packing unit (4) comprises a first packing layer, a second packing layer and a third packing layer; the top of each packing layer is provided with a packing pressing ring (3), and the bottom of each packing layer is provided with a packing support piece (7).
4. A desorber according to claim 1, characterized in that the desorber comprises a liquid distributor (2) and a screen (5); the liquid distributor (2) is arranged at the top of the packing unit (4); the filter screen (5) is arranged at the upper part of the liquid distributor (2).
5. A desorber according to claim 4, characterized in that the liquid distributor (2) is a trough-tray liquid distributor.
6. The desorber according to claim 1, characterized in that the reaction stirring device (8) comprises a stirring paddle, the desorber is provided with a stirring port, the stirring paddle comprises a stirring rod and a stirring blade which are connected, and the stirring rod extends into the tower from the tower outside from the stirring port of the desorber so that the stirring blade is positioned in the amine liquid reaction chamber of the desorber; and a part of the stirring rod is positioned outside the desorption tower so as to be connected with the motor.
7. The desorber according to claim 6, wherein the height of the amine liquid reaction chamber is 0.5-5 m, the stirring port is arranged on the tower wall of the amine liquid reaction chamber, and the height distance from the stirring port to the bottom of the lower head of the desorber is 0.5-2 m.
8. The desorber according to any one of claims 1 to 7, characterized in that the amine liquid reaction chamber comprises a thermosiphon liquid return port (T), a flash vapor inlet port (i), a boiler port (o) and an amine vapor port (h); the amine liquid outlet (b), the thermosiphon liquid return port (T) and the amine steam inlet (e) are sequentially and longitudinally arranged on the tower wall of the amine liquid reaction chamber;
the flash evaporation steam inlet (i) and the amine steam inlet (h) are arranged in the same horizontal direction;
the amine liquid outlet (b) is 0.1-2 m higher than the amine steam inlet (e); the thermosiphon liquid return port (T) is 0.2-2 m higher than the amine steam inlet (e);
the boiler interface (o) is arranged at the lower part of the flash evaporation steam inlet (i), and the distance from the flash evaporation steam inlet (i) is 0.5-2 m.
9. The desorber according to claim 8, characterized in that the desorber is provided with stirring ports, which are arranged below the amine vapour ports (h), with a pitch of 0.3-1 m.
10. A system for catalytic desorption of carbon dioxide, characterized in that it comprises a desorber (11) and a boiler (12) according to any one of claims 1 to 9; the boiler (12) is provided with a first inlet and a first outlet; the first outlet of the boiler (12) is communicated with an amine steam inlet (e) of the desorption tower (11), and the first inlet of the boiler (12) is communicated with an amine liquid outlet (b) of the desorption tower (11); the boiler (12) is configured to provide heat to a desorber (11); the desorber (11) is configured to be rich in CO using packing 2 The amine liquid is subjected to catalytic desorption.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320811280.9U CN219682132U (en) | 2023-04-12 | 2023-04-12 | Desorber and system for catalytically desorbing carbon dioxide |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320811280.9U CN219682132U (en) | 2023-04-12 | 2023-04-12 | Desorber and system for catalytically desorbing carbon dioxide |
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| CN219682132U true CN219682132U (en) | 2023-09-15 |
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| CN202320811280.9U Active CN219682132U (en) | 2023-04-12 | 2023-04-12 | Desorber and system for catalytically desorbing carbon dioxide |
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