CN219815799U - Hierarchical cooling device of absorption tower - Google Patents
Hierarchical cooling device of absorption tower Download PDFInfo
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- CN219815799U CN219815799U CN202320857740.1U CN202320857740U CN219815799U CN 219815799 U CN219815799 U CN 219815799U CN 202320857740 U CN202320857740 U CN 202320857740U CN 219815799 U CN219815799 U CN 219815799U
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- lean
- absorption tower
- tower
- absorption
- liquid
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- 238000010521 absorption reaction Methods 0.000 title claims abstract description 91
- 238000001816 cooling Methods 0.000 title claims abstract description 33
- 239000007788 liquid Substances 0.000 claims abstract description 90
- 230000008929 regeneration Effects 0.000 claims abstract description 24
- 238000011069 regeneration method Methods 0.000 claims abstract description 24
- 238000003795 desorption Methods 0.000 claims abstract description 18
- 238000012546 transfer Methods 0.000 claims abstract description 5
- 238000005406 washing Methods 0.000 claims description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 11
- 239000006096 absorbing agent Substances 0.000 claims description 4
- 238000000605 extraction Methods 0.000 claims description 3
- 238000009833 condensation Methods 0.000 claims description 2
- 230000005494 condensation Effects 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 9
- 230000000694 effects Effects 0.000 abstract description 6
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 239000003546 flue gas Substances 0.000 abstract description 3
- 239000000243 solution Substances 0.000 description 7
- 239000007789 gas Substances 0.000 description 3
- 230000005587 bubbling Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 239000007791 liquid phase Substances 0.000 description 2
- 239000012071 phase Substances 0.000 description 2
- 150000001412 amines Chemical class 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 239000011552 falling film Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
Landscapes
- Gas Separation By Absorption (AREA)
- Treating Waste Gases (AREA)
Abstract
The utility model discloses a grading cooling device of an absorption tower. The utility model is provided with the absorption tower for staged cooling, the semi-lean solution can be cooled by the rich solution heat exchanger, when in use, the absorption solution with different desorption degrees is extracted from the regeneration tower, is subjected to heat exchange by the lean solution heat exchanger, is condensed and cooled, is injected into the absorption tower for circulation, and part of the lean solution with complete desorption is extracted from the bottom of the regeneration tower and is injected into the top of the absorption tower, compared with the traditional process, the lean solution has lower load and stronger mass transfer driving force, and is beneficial to capturing the top of the absorption towerCO in the lowest partial pressure of flue gas 2 The other part of the absorption liquid with incomplete desorption is pumped out and injected into the middle part of the absorption tower, and the cooled semi-lean liquid corresponds to the effect of an inter-stage cooling process, so that the effect of reducing the heat load is achieved.
Description
Technical Field
The utility model relates to the technical field of graded cooling of absorption towers, in particular to a graded cooling device of an absorption tower.
Background
The absorption tower is a device for realizing the absorption operation. The gas-liquid phase contact forms are divided into three types, wherein the first type is a plate column, a bubbling absorption column and a stirring bubbling absorption column, wherein gas is dispersed in the liquid phase in the form of bubbles; the second type is a jet pipe, a venturi pipe and a spray tower, wherein liquid is dispersed in a gas phase in a liquid drop form; the third category is a packed absorber and a falling film absorber in which a liquid contacts a gas phase in a film-like motion. The absorption tower is more convenient for people to produce, has ideal corrosion resistance, longer service life and better sealing performance, and is convenient for people to use when processing objects.
There are still a number of inconvenient problems: when the existing absorption tower works, organic amine liquid in the absorption tower absorbs CO 2 The process is exothermic, heat generated by the reaction is transferred to the absorption liquid, so that the temperature of the absorption liquid is increased, the driving force of the absorption process is limited, and the CO of the absorption liquid is reduced 2 The load capacity, in the process of using the absorption tower, the lower temperature is favorable for improving the driving force of the reaction, enhancing the absorption capacity of the absorption liquid and further improving the CO of the rich liquid 2 The load reduces the regeneration load of the absorption liquid.
Disclosure of Invention
In order to solve the technical problems, the utility model designs a grading cooling device of an absorption tower.
The utility model adopts the following technical scheme:
the utility model provides an absorption tower classifying cooling device, includes absorption tower and regeneration tower, be provided with multichannel classifying cooling device between absorption tower and the regeneration tower, multichannel classifying cooling device includes lean-rich liquid heat exchanger and lean-rich liquid cooler respectively, sets up the absorption liquid extraction opening that desorption degree is different in the regeneration tower, and the absorption liquid that desorption degree is different in the regeneration tower is taken out the back and is taken out through lean-rich liquid heat exchanger and absorption tower bottom rich liquid heat transfer and injection absorption tower after cooling through lean-rich liquid cooler condensation and circulate.
Preferably, one path of the multi-path grading cooling device comprises a lean-rich liquid heat exchanger and a lean liquid cooler, wherein part of the lean liquid which is thoroughly desorbed is extracted from the bottom of the regeneration tower, exchanges heat with the rich liquid extracted from the bottom of the absorption tower through the lean-rich liquid heat exchanger, is condensed and cooled through the lean liquid cooler, and is injected into the top of the absorption tower.
Preferably, the other path of the multi-path graded cooling device comprises a lean-rich liquid heat exchanger and a lean liquid cooler, the other part of absorption liquid with incomplete desorption is extracted from the bottom of the regeneration tower, exchanges heat with the rich liquid extracted from the bottom of the absorption tower through the lean-rich liquid heat exchanger, is condensed and cooled through the lean liquid cooler, and is injected into the middle part of the absorption tower.
Preferably, a rich liquid pump is communicated with the bottom of the absorption tower, and a lean-rich liquid heat exchanger is communicated with the rich liquid pump.
Preferably, one side of the top of the absorption tower is connected with a water washing tower, and the water washing tower is circularly connected with a water washing pump through a pipeline.
Preferably, one side of the bottom of the absorption tower is connected with an alkaline washing tower, and the alkaline washing tower is circularly connected with an alkaline washing pump through a pipeline.
The beneficial effects of the utility model are as follows: the utility model is provided with the absorption tower for stage cooling, the semi-lean solution can be cooled by the rich solution heat exchanger, when in use, the absorption solution with different desorption degrees is extracted from the regeneration tower, is subjected to heat exchange by the lean solution heat exchanger, is condensed and cooled, is injected into the absorption tower for circulation, and part of the lean solution with complete desorption is extracted from the bottom of the regeneration tower and is injected into the top of the absorption tower, compared with the prior artThe process has lower lean solution load and stronger mass transfer driving force, and is favorable for capturing CO at the lowest partial pressure of flue gas at the top of the absorption tower 2 The other part of the absorption liquid with incomplete desorption is pumped out and injected into the middle part of the absorption tower, and the cooled semi-lean liquid corresponds to the effect of an inter-stage cooling process, so that the effect of reducing the heat load is achieved.
Drawings
FIG. 1 is a schematic view of a construction of the present utility model;
in the figure: 1. an absorption tower; 2. a lean solution cooler; 3. a lean rich liquid heat exchanger; 4. a rich liquid pump; 5. a water washing tower; 6. a water washing pump; 7. an alkaline washing tower; 8. and (5) an alkaline washing pump.
Description of the embodiments
The technical scheme of the utility model is further specifically described by the following specific embodiments with reference to the accompanying drawings:
examples: as shown in fig. 1, an absorption tower staged cooling device comprises an absorption tower 1 and a regeneration tower, wherein a multi-path staged cooling device is arranged between the absorption tower and the regeneration tower, the multi-path staged cooling device respectively comprises a lean-rich liquid heat exchanger 3 and a lean liquid cooler 2, absorption liquid extraction ports with different desorption degrees are arranged in the regeneration tower, and absorption liquids with different desorption degrees in the regeneration tower are extracted and then exchange heat with rich liquid extracted from the bottom of the absorption tower through the lean-rich liquid heat exchanger and are condensed and cooled through the lean liquid cooler, and then are injected into the absorption tower for circulation.
One path of the multi-path graded cooling device comprises a lean-rich liquid heat exchanger and a lean liquid cooler, part of the lean liquid which is thoroughly desorbed is extracted from the bottom of the regeneration tower, exchanges heat with the rich liquid extracted from the bottom of the absorption tower through the lean-rich liquid heat exchanger, is condensed and cooled through the lean liquid cooler, and is injected into the top of the absorption tower.
The other path of the multi-path graded cooling device comprises a lean-rich liquid heat exchanger and a lean liquid cooler, the other part of absorption liquid with incomplete desorption is extracted from the bottom of the regeneration tower, exchanges heat with the rich liquid extracted from the bottom of the absorption tower through the lean-rich liquid heat exchanger, and is injected into the middle part of the absorption tower after being condensed and cooled through the lean liquid cooler.
The bottom of the absorption tower is communicated with a rich liquid pump 4, and the rich liquid pump is communicated with a lean-rich liquid heat exchanger. One side of the top of the absorption tower is connected with a water washing tower, and a water washing pump 6 is circularly connected to the water washing tower 5 through a pipeline. One side of the bottom of the absorption tower is connected with an alkaline washing tower 7, and the alkaline washing tower is circularly connected with an alkaline washing pump 8 through a pipeline.
When the graded cooling device of the absorption tower works, the graded cooling of the absorption tower 1 is to extract absorption liquids with different desorption degrees from the regeneration tower, exchange heat through the lean-rich liquid heat exchanger 3, condense and cool, then inject the absorption liquid into the absorption tower 1 for circulation, extract part of the lean liquid with thorough desorption from the bottom of the regeneration tower and inject the lean liquid into the top of the absorption tower 1, and compared with the traditional process, the lean liquid has lower load and stronger mass transfer driving force, and is beneficial to capturing CO at the lowest partial pressure of flue gas at the top of the absorption tower 1 2 The other part of the absorption liquid with incomplete desorption is pumped out and injected into the middle part of the absorption tower 1, and the cooled semi-lean liquid corresponds to the effect of an inter-stage cooling process, so that the effect of reducing the heat load can be realized.
The above-described embodiment is only a preferred embodiment of the present utility model, and is not limited in any way, and other variations and modifications may be made without departing from the technical aspects set forth in the claims.
Claims (6)
1. The utility model provides an absorption tower classifying cooling device, includes absorption tower and regeneration tower, its characterized in that is provided with multichannel classifying cooling device between absorption tower and the regeneration tower, and multichannel classifying cooling device includes lean-rich liquid heat exchanger and lean-rich liquid cooler respectively, sets up the absorption liquid extraction opening that desorption degree is different in the regeneration tower, and the absorption liquid that desorption degree is different in the regeneration tower is taken out the back and is passed through lean-rich liquid heat exchanger and the rich liquid heat transfer that absorption tower bottom was taken out and is poured into the absorption tower after cooling through lean-rich liquid cooler condensation and circulate.
2. The device for classifying and cooling the absorption tower according to claim 1, wherein one path of the multi-path classifying and cooling device comprises a lean-rich liquid heat exchanger and a lean liquid cooler, wherein part of the thoroughly desorbed lean liquid is extracted from the bottom of the regeneration tower, exchanges heat with the rich liquid extracted from the bottom of the absorption tower through the lean-rich liquid heat exchanger, is condensed and cooled through the lean liquid cooler, and is injected into the top of the absorption tower.
3. The apparatus according to claim 1, wherein the other path of the multi-path stage cooling apparatus comprises a lean-rich liquid heat exchanger and a lean liquid cooler, and the other part of the absorption liquid with incomplete desorption is extracted from the bottom of the regenerator, exchanges heat with the rich liquid extracted from the bottom of the absorber by the lean-rich liquid heat exchanger, condenses and cools by the lean liquid cooler, and is injected into the middle of the absorber.
4. The apparatus according to claim 1, wherein the bottom of the absorption tower is connected to a rich liquid pump, and the rich liquid pump is connected to a lean-rich liquid heat exchanger.
5. The hierarchical cooling device for an absorption tower according to claim 1, wherein a water scrubber is connected to one side of the top of the absorption tower, and a water scrubber pump is connected to the water scrubber in a circulating manner through a pipeline.
6. The fractional cooling device of an absorption tower according to claim 1, wherein one side of the bottom of the absorption tower is connected with an alkaline washing tower, and the alkaline washing tower is circularly connected with an alkaline washing pump through a pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320857740.1U CN219815799U (en) | 2023-04-18 | 2023-04-18 | Hierarchical cooling device of absorption tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320857740.1U CN219815799U (en) | 2023-04-18 | 2023-04-18 | Hierarchical cooling device of absorption tower |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219815799U true CN219815799U (en) | 2023-10-13 |
Family
ID=88274531
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320857740.1U Active CN219815799U (en) | 2023-04-18 | 2023-04-18 | Hierarchical cooling device of absorption tower |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219815799U (en) |
-
2023
- 2023-04-18 CN CN202320857740.1U patent/CN219815799U/en active Active
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