CN201485403U - Urea medium pressure absorption tower - Google Patents
Urea medium pressure absorption tower Download PDFInfo
- Publication number
- CN201485403U CN201485403U CN2009201689463U CN200920168946U CN201485403U CN 201485403 U CN201485403 U CN 201485403U CN 2009201689463 U CN2009201689463 U CN 2009201689463U CN 200920168946 U CN200920168946 U CN 200920168946U CN 201485403 U CN201485403 U CN 201485403U
- Authority
- CN
- China
- Prior art keywords
- gas
- tower
- urea
- medium pressure
- absorber
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000004202 carbamide Substances 0.000 title claims abstract description 25
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 title claims abstract description 24
- 238000010521 absorption reaction Methods 0.000 title abstract description 14
- 239000007788 liquid Substances 0.000 claims abstract description 17
- 235000011114 ammonium hydroxide Nutrition 0.000 claims abstract description 13
- 239000006096 absorbing agent Substances 0.000 claims description 39
- 230000005587 bubbling Effects 0.000 claims description 15
- 238000012856 packing Methods 0.000 claims description 13
- 230000008676 import Effects 0.000 claims description 6
- 241000282326 Felis catus Species 0.000 claims description 4
- 238000005406 washing Methods 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 abstract 1
- 239000000945 filler Substances 0.000 abstract 1
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 22
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 12
- 229910021529 ammonia Inorganic materials 0.000 description 11
- KXDHJXZQYSOELW-UHFFFAOYSA-N Carbamic acid Chemical compound NC(O)=O KXDHJXZQYSOELW-UHFFFAOYSA-N 0.000 description 10
- 235000011089 carbon dioxide Nutrition 0.000 description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- 239000000243 solution Substances 0.000 description 7
- BVCZEBOGSOYJJT-UHFFFAOYSA-N ammonium carbamate Chemical compound [NH4+].NC([O-])=O BVCZEBOGSOYJJT-UHFFFAOYSA-N 0.000 description 6
- 238000009833 condensation Methods 0.000 description 5
- 230000005494 condensation Effects 0.000 description 5
- 210000000952 spleen Anatomy 0.000 description 4
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 3
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 239000001569 carbon dioxide Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000013022 venting Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000005201 scrubbing Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 150000003672 ureas Chemical class 0.000 description 1
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- Gas Separation By Absorption (AREA)
Abstract
The utility model discloses a urea medium pressure absorption tower, which belongs to the technical field of urea production devices. The urea medium pressure absorption tower comprises a cylindrical tower body (15), a gas outlet (1), a gas inlet (9) and a liquid outlet (8), wherein the gas outlet (1) is arranged on a tower top, and the gas inlet (9) and the liquid outlet (8) are arranged on a tower bottom. The urea medium pressure absorption tower is characterized in that the tower body (15) comprises a bubble absorption segment (6) on the lower portion, a filler segment (5) on the middle portion and a rectification segment (4) on the upper portion, wherein the lower portion of the bubble absorption segment (6) is provided with a gas distributor (7), the gas distributor (7) is communicated with the gas inlet (9), one side of the rectification segment (4) is provided with a top ammonia water inlet (3), and a tower disc (11) is arranged in a rectification tower (4). The urea medium pressure absorption tower has higher function of washing CO2 in gas, the content of the CO2 in the gas which comes out from the medium pressure absorption tower is in 5PPm, and the operation stability and the reliability of the medium pressure absorption tower can be increased.
Description
Technical field
The utility model relates to a kind of urea M.P. absorber, and particularly a kind of urea M.P. absorber with three absorber portions belongs to the urea plant technical field.
Background technology
The urea M.P. absorber is the heart equipment that aqueous solution complete circling urea is produced, and its function is with pressing the C0 that divides in venting one's spleen in the ammonia scrubbing
2, with the branch middle NH that vents one's spleen
3, CO
2And H
2O separates, and is contained CO hardly from cat head
2Gas, at the bottom of tower, obtain carboxylamine solution, be back to urea synthesizer and utilize again again.
Existing M.P. absorber is a cylindrical device, is made up of two sections, and hypomere is the bubbling absorber portion, and epimere is a fine wash sections.The bottom of bubbling absorber portion is provided with gas distributor; Fine wash sections is many to be made up of 6～9 column plates, and two column plates of the superiors are dry column plate, are used for dry gas, and all the other column plates are the fine purifiation column plate, are used for the carbonic acid gas of fine purifiation gas.The branch that the enters M.P. absorber gas distributor of gas through the bubbling segment bottom of venting one's spleen is dispersed into tiny air-flow and is evenly distributed on the tower cross section, gas is air bubble-shaped and contacts with the solution of rich ammonia, carbonic acid gas in the gas and ammonia react generate ammonium carbamate, water condensation in the gas, be combined together to form ammonium carbamate solution, at the bottom of tower, discharge.Go out the fine wash sections that the gas of bubbling segment enters top, absorption tower, further washing absorbs the carbonic acid gas in the gas, the water that contains in the gas is absorbed by the liquefied ammonia of the 1st, 2 column plates, the content that goes out carbonic acid gas in the gas at M.P. absorber top is about 100PPm, and exhaust gas reclaims after condenser condenses.
Existing M.P. absorber, only having designed bubbling absorber portion and the fine wash sections carbonic acid gas during branch is vented one's spleen absorbs, exist the incomplete problem of carbon dioxide absorption (content that goes out carbonic acid gas in the gas at M.P. absorber top is about 100PPm), restricted the raising of throughput.Water carbon mol ratio height in the recycle system simultaneously, it is higher to go out in the gas of fine wash sections water content, need the water that dry column plate contains in to gas be set in fine wash sections and absorb.Owing to the CO that contains the 100PPm that has an appointment in the gas that goes out the M.P. absorber top of tower
2, and CO
2Solubleness in liquefied ammonia is minimum, will generate the carboxylamine crystalline ammonium in the gas ammonia condensation process and occluding device, pipeline, urea production can't be carried out, and the carbon steel material that is contacted is brought corrosion.
The utility model content
The purpose of this utility model is to overcome the incomplete problem of carbon dioxide absorption that exists in the existing industrial production urea, and a kind of urea M.P. absorber of being made up of three absorber portions is provided.This urea M.P. absorber has CO in the higher washing gas
2Function, can significantly reduce and CO in the M.P. absorber gas
2Content, can increase stability, the reliability of M.P. absorber operation.
To achieve these goals, the utility model realizes providing following technical scheme:
A kind of urea M.P. absorber, comprise the gas feed 9 and the liquid exit 8 that are provided with at the bottom of pneumatic outlet 1 that columnar tower body 15, cat head be provided with, the tower, it is characterized in that: described tower body 15 is made up of the bubbling absorber portion 6 of bottom, the packing section 5 at middle part and the rectifying section 4 on top; The bottom of described bubbling absorber portion 6 is provided with gas distributor 7, and gas distributor 7 is connected with gas feed 9; One side of described rectifying section 4 is provided with top ammoniacal liquor import 3, is provided with tower tray 11 in the rectifying tower 4.
For the liquid that rectifying section is come is evenly distributed on the filling surface, the top of described packing section 5 is provided with liquid distributor 10.
In order to separate spray water xi or the drop of carrying secretly in the gas phase, the top of rectifying tower 4 is installed with wire mesh demister 2.
In order to prevent CO
2Generate the carboxylamine crystalline ammonium and occluding device, pipeline in the gas ammonia condensation process, described tower tray 11 all is the fine purifiation tower tray.
Described tower tray 11 is provided with bubble-cap worker 12 and downtake 13, and the below of described downtake 13 is provided with liquid baffle board 14, and described liquid baffle board 14 is fixed on the tower body of downtake 13 belows.
Enter the gas of urea M.P. absorber by gas feed 9, the gas distributor that is provided with through bubbling absorber portion 6 bottoms is dispersed into tiny air-flow and is evenly distributed on the tower cross section, gas is air bubble-shaped and contacts with the solution of rich ammonia, carbonic acid gas in the gas and ammonia react generate ammonium carbamate, water condensation in the gas, be combined together to form ammonium carbamate solution, at the bottom of tower, discharge.The gas that is absorbed by bubbling absorber portion 6 does not enter packing section 5, is uniformly distributed in filling surface by the ammoniacal liquor of fine wash sections 4, and gas fully contacts at filling surface with ammoniacal liquor, the CO in the gas
2Further washed, gone out CO in the gas of packing section
2Content be about 100PPm.The gas that goes out packing section 5 enters fine wash sections 4, gas and the ammoniacal liquor counter current contact on tower tray 11 that is entered by top ammoniacal liquor import 3, the CO in the gas
2Be washed and be reduced in the 5PPm.
The utility model compared with prior art has following characteristics:
1) do not have dry column plate, avoided CO
2On dry column plate, generate the possibility that the carboxylamine crystalline ammonium stops up column plate.
2) has CO in the higher washing gas
2Function, reduced the CO that one section absorption tower gas thing
2Content.
3) increased by one section stability and reliability that the absorption tower is moved.
The utility model is described in further detail below by specific embodiments and the drawings.
Description of drawings
The utility model will illustrate by example and with reference to the mode of accompanying drawing, wherein:
Fig. 1 is the structural representation of M.P. absorber of the present utility model.
Fig. 2 is the tray structure synoptic diagram of the utility model rectifying section 4.
Wherein, Reference numeral is: 1-pneumatic outlet, 2-wire mesh demister, the ammoniacal liquor import of 3-top, 4-rectifying section, 5-packing section, 6-bubbling absorber portion, 7-gas distributor, 8-liquid exit, 9-gas feed, 10-liquid distributor, 11-tower tray, 12-bubble-cap worker, 13-downtake, 14-the first layer tower tray liquid barrier, 15-tower body.
Embodiment
Disclosed arbitrary feature in this specification sheets (comprising any accessory claim, summary and accompanying drawing) is unless special narration all can be replaced by other equivalences or the alternative features with similar purpose.That is, unless special narration, each feature is an example in a series of equivalences or the similar characteristics.
Embodiment
As shown in drawings, the urea M.P. absorber that present embodiment is cited, comprise the gas feed 9 and the liquid exit 8 that are provided with at the bottom of pneumatic outlet 1 that columnar tower body 15, cat head be provided with, the tower, described tower body 15 is made up of the bubbling absorber portion 6 of bottom, the packing section 5 at middle part and the rectifying section 4 on top; The bottom of described bubbling absorber portion 6 is provided with gas distributor 7, and gas distributor 7 is connected with gas feed 9; One side of described rectifying section 4 is provided with top ammoniacal liquor import 3, and the top of rectifying tower 4 is installed with wire mesh demister 2, is provided with tower tray 11 in the rectifying tower 4, and described tower tray 11 all is the fine purifiation tower tray.Described tower tray 11 is provided with bubble-cap worker 12 and downtake 13, and the below of described downtake 13 is provided with liquid baffle board 14, and described liquid baffle board 14 is fixed on the tower body of downtake 13 belows.
The top of described packing section 5 is provided with liquid distributor 10.
Enter the gas of urea M.P. absorber by gas feed 9, the gas distributor that is provided with through bubbling absorber portion 6 bottoms is dispersed into tiny air-flow and is evenly distributed on the tower cross section, gas is air bubble-shaped and contacts with the solution of rich ammonia, carbonic acid gas in the gas and ammonia react generate ammonium carbamate, water condensation in the gas, be combined together to form ammonium carbamate solution, at the bottom of tower, discharge.The gas that is absorbed by bubbling absorber portion 6 does not enter packing section 5, is uniformly distributed in filling surface by the ammoniacal liquor of fine wash sections 4 by liquid distributor 10, and gas fully contacts at filling surface with ammoniacal liquor, the CO in the gas
2Further washed, gone out CO in the gas of packing section
2Content be about 100PPm.The gas that goes out packing section 5 enters fine wash sections 4, gas and the ammoniacal liquor counter current contact on tower tray 11 that is entered by top ammoniacal liquor import 3, the CO in the gas
2Be washed and be reduced in the 5PPm.
Claims (4)
1. urea M.P. absorber, comprise the gas feed (9) and the liquid exit (8) that are provided with at the bottom of pneumatic outlet (1) that columnar tower body (15), cat head be provided with, the tower, it is characterized in that: described tower body (15) is made up of the bubbling absorber portion (6) of bottom, the packing section (5) at middle part and the rectifying section (4) on top; The bottom of described bubbling absorber portion (6) is provided with gas distributor (7), and gas distributor (7) is connected with gas feed (9); One side of described rectifying section (4) is provided with top ammoniacal liquor import (3), is provided with tower tray (11) in the rectifying tower (4).
2. urea M.P. absorber according to claim 1 is characterized in that: the top of described packing section (5) is provided with liquid distributor (10).
3. urea M.P. absorber according to claim 1 is characterized in that: the top of rectifying tower (4) is installed with wire mesh demister (2).
4. urea M.P. absorber according to claim 1 is characterized in that: described tower tray (11) all is the fine purifiation tower tray.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201689463U CN201485403U (en) | 2009-08-10 | 2009-08-10 | Urea medium pressure absorption tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201689463U CN201485403U (en) | 2009-08-10 | 2009-08-10 | Urea medium pressure absorption tower |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201485403U true CN201485403U (en) | 2010-05-26 |
Family
ID=42424292
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201689463U Expired - Lifetime CN201485403U (en) | 2009-08-10 | 2009-08-10 | Urea medium pressure absorption tower |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201485403U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103804237A (en) * | 2014-01-09 | 2014-05-21 | 中盐安徽红四方股份有限公司 | Method for reducing ammonia content and blasting property of medium-pressure emptying gas |
| CN105884658A (en) * | 2016-05-11 | 2016-08-24 | 南宁市夏阳化工科技有限责任公司 | Production device for preparing adblue |
| CN115259265A (en) * | 2022-08-12 | 2022-11-01 | 高维平 | A high-efficiency composite separation tower and process flow for the treatment of ammonia-containing wastewater from synthetic ammonia shift condensate |
-
2009
- 2009-08-10 CN CN2009201689463U patent/CN201485403U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103804237A (en) * | 2014-01-09 | 2014-05-21 | 中盐安徽红四方股份有限公司 | Method for reducing ammonia content and blasting property of medium-pressure emptying gas |
| CN105884658A (en) * | 2016-05-11 | 2016-08-24 | 南宁市夏阳化工科技有限责任公司 | Production device for preparing adblue |
| CN115259265A (en) * | 2022-08-12 | 2022-11-01 | 高维平 | A high-efficiency composite separation tower and process flow for the treatment of ammonia-containing wastewater from synthetic ammonia shift condensate |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: SICHUAN JIN SHENG SAI RUI CHEMICAL INDUSTRY CO., L Free format text: FORMER OWNER: SICHUAN GOLDEN ELEPHANT CHEMICAL CO., LTD. Effective date: 20101222 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20101222 Address after: 620031 Meishan City, Sichuan Province town of wulidun Street ear like Dongpo District No. 43 Patentee after: Sichuan Jin Sheng Sai Rui Chemical Industry Co.,Ltd. Address before: 620031 Meishan City, Sichuan Province town of wulidun Street ear like Dongpo District No. 43 Patentee before: Sichuan Golden Elephant Chemical Industry Group |
|
| C56 | Change in the name or address of the patentee |
Owner name: SICHUAN GOLDEN-ELEPHANT SINCERITY CHEMICAL CO., LT Free format text: FORMER NAME: SICHUAN JIN SHENG SAI RUI CHEMICAL INDUSTRY CO., LTD. |
|
| CP03 | Change of name, title or address |
Address after: 610031 Meishan province Sichuan City Jinxiang Chemical Industrial Park Dongpo District Patentee after: Sichuan Golden-Elephant Sincerity Chemical Co., Ltd. Address before: 620031 Meishan City, Sichuan Province town of wulidun Street ear like Dongpo District No. 43 Patentee before: Sichuan Jin Sheng Sai Rui Chemical Industry Co.,Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100526 |