CN220467589U - Device for preparing superior ammonia water from crude ammonia gas - Google Patents
Device for preparing superior ammonia water from crude ammonia gas Download PDFInfo
- Publication number
- CN220467589U CN220467589U CN202321990802.2U CN202321990802U CN220467589U CN 220467589 U CN220467589 U CN 220467589U CN 202321990802 U CN202321990802 U CN 202321990802U CN 220467589 U CN220467589 U CN 220467589U
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- CN
- China
- Prior art keywords
- ammonia
- water
- tank
- ammonia water
- tower
- Prior art date
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- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 title claims abstract description 209
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 title claims abstract description 81
- 235000011114 ammonium hydroxide Nutrition 0.000 title claims abstract description 81
- 229910021529 ammonia Inorganic materials 0.000 claims abstract description 85
- 238000006477 desulfuration reaction Methods 0.000 claims abstract description 28
- 230000023556 desulfurization Effects 0.000 claims abstract description 28
- 238000010521 absorption reaction Methods 0.000 claims description 38
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 34
- 238000007670 refining Methods 0.000 claims description 31
- 239000007788 liquid Substances 0.000 claims description 22
- 238000010612 desalination reaction Methods 0.000 claims 1
- 230000008901 benefit Effects 0.000 abstract description 4
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 abstract description 3
- 239000003546 flue gas Substances 0.000 abstract description 3
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 11
- 229910000037 hydrogen sulfide Inorganic materials 0.000 description 11
- 239000007789 gas Substances 0.000 description 9
- 238000000034 method Methods 0.000 description 7
- 230000003009 desulfurizing effect Effects 0.000 description 5
- 239000000047 product Substances 0.000 description 5
- 239000003795 chemical substances by application Substances 0.000 description 4
- 238000005406 washing Methods 0.000 description 4
- 239000002253 acid Substances 0.000 description 3
- 238000011033 desalting Methods 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 239000012752 auxiliary agent Substances 0.000 description 2
- 239000006227 byproduct Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000010926 purge Methods 0.000 description 2
- 238000005204 segregation Methods 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 238000012824 chemical production Methods 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000002309 gasification Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
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- Physical Water Treatments (AREA)
- Treating Waste Gases (AREA)
Abstract
The utility model relates to a device for preparing superior ammonia water from crude ammonia, which aims to solve the problems that the prior art can obtain crude ammonia which is directly used for preparing strong ammonia water, the H2S content in the ammonia water can reach more than 500ppm, the index of the superior ammonia water can not be reached, and the ammonia water can not be directly used for desulfurization and denitration of boiler flue gas, thereby influencing the economic benefit of ammonia water products.
Description
Technical Field
The utility model belongs to the field of chemical production, and particularly relates to a device for preparing superior ammonia water from crude ammonia gas.
Background
The stripping system of the CO conversion unit of the coal chemical industry device is mainly used for treating the low-temperature process condensate of the CO conversion unit and ammonia washing liquid of the acid gas removal unit, stripping ammonia, hydrogen sulfide, carbon dioxide and other gases in the condensate and the ammonia washing liquid, and recycling the purified condensate to the gasification device.
The conventional treatment process is divided into single-tower pressurized stripping and double-tower pressurized stripping, the acid gas at the top of the tower is discharged into an acid gas torch or a sulfur recovery device, and the generated rich ammonia gas is subjected to two-stage cooling segregation or three-stage cooling segregation to obtain crude ammonia gas with higher concentration, wherein the H2S content in the crude ammonia gas can reach more than 2000 ppm. The obtained crude ammonia gas is directly used for preparing strong ammonia water, the H2S content in the ammonia water can reach more than 500ppm, the index of superior ammonia water cannot be reached, and the ammonia gas cannot be directly used for desulfurization and denitrification of boiler flue gas, so that the economic benefit of an ammonia water product is affected.
Disclosure of Invention
In order to solve the problems that the crude ammonia gas obtained by the prior art is directly used for preparing strong ammonia water, the H2S content in the ammonia water can reach more than 500ppm, the index of superior ammonia water cannot be reached, and the ammonia water cannot be directly used for desulfurization and denitrification of boiler flue gas, thereby influencing the economic benefit of an ammonia water product.
The utility model discloses a device for preparing superior ammonia water from crude ammonia, which comprises a desulfurization circulating pump, a deep cooler, an ammonia water circulating pump, an ammonia water cooler, a water sealed tank, a desalting water pump, a concentrated ammonia water pump, an ammonia refining tower, an ammonia liquid separator, a desulfurization absorption tower, an ammonia filter, an ammonia absorption tower, a dilute ammonia water tank and a concentrated ammonia water tank, wherein the ammonia water tank is arranged on the bottom of the ammonia refining tower;
the bottom of the ammonia refining tower is connected with the middle upper part of the ammonia refining tower through a desulfurization circulating pump and a cryocooler in sequence, and is connected with one path through the desulfurization circulating pump for discharging;
the top of the ammonia refining tower is connected with the middle part of the ammonia liquid separator, and the bottom of the ammonia liquid separator is connected with the lower part of the ammonia refining tower;
the top of the ammonia refining tower is connected with the lower part of the desulfurization absorption tower, and the top of the desulfurization absorption tower is connected with the middle part of the ammonia filter;
the top of the ammonia filter is connected with the lower part of the ammonia absorption tower, the bottom of the ammonia absorption tower is connected with the middle part of the dilute ammonia water tank, the bottom of the dilute ammonia water tank sequentially passes through the ammonia water circulating pump and the ammonia water cooler and then is divided into three paths, one path is connected with the middle upper part of the ammonia absorption tower, the other path is connected with the top of the ammonia refining tower, the three paths are connected with the middle part of the concentrated ammonia water tank, and the bottom of the concentrated ammonia water tank is discharged through the concentrated ammonia water pump;
the top of the concentrated ammonia water tank, the top of the dilute ammonia water tank and the top of the ammonia absorption tower are connected with the top of the water seal tank, and the bottom of the water seal tank is connected with the upper part of the ammonia absorption tower through a desalted water pump.
The gas input by the ammonia refining tower is crude ammonia containing H2S.
The liquid input into the water sealed tank is desalted water.
The utility model has the advantages that:
the technology adopts a process route of low-temperature strong ammonia water washing, desulfurizing agent adsorption and desalted water circulating absorption to refine and purify high-concentration ammonia gas generated by a stripping system, H2S in crude ammonia gas is removed, then high-quality high-concentration ammonia water is prepared, the quality of the ammonia water can reach a high-quality product index, no auxiliary agent is needed in the whole process, and no byproduct is generated.
Drawings
FIG. 1 is a schematic diagram of an apparatus of the present utility model;
reference numerals illustrate: 1. an ammonia refining tower; 2. a desulfurization circulation pump; 3. a chiller; 4. an ammonia liquid separator; 5. a desulfurizing absorption tower; 6. an ammonia gas filter; 7. an ammonia absorption tower; 8. a dilute ammonia water tank; 9. an ammonia water circulating pump; 10. an ammonia water cooler; 11. a water sealed tank; 12. a desalting water pump; 13. a concentrated ammonia water tank; 14. concentrated ammonia water pump.
Detailed Description
As shown in fig. 1: the utility model relates to a device for preparing superior ammonia water from crude ammonia, which comprises a desulfurization circulating pump 2, a deep cooler 3, an ammonia water circulating pump 9, an ammonia water cooler 10, a water seal tank 11, a desalted water pump 12, a concentrated ammonia water pump 14, an ammonia refining tower 1, an ammonia liquid separator 4, a desulfurization absorption tower 5, an ammonia filter 6, an ammonia absorption tower 7, a dilute ammonia water tank 8 and a concentrated ammonia water tank 13;
the bottom of the ammonia refining tower 1 is connected with the middle upper part of the ammonia refining tower 1 sequentially through a desulfurization circulating pump 2 and a refrigerator 3, and is connected with one path through the desulfurization circulating pump 2 for discharge;
the top of the ammonia refining tower 1 is connected with the middle part of the ammonia liquid separator 4, and the bottom of the ammonia liquid separator 4 is connected with the lower part of the ammonia refining tower 1;
the top of the ammonia refining tower 1 is connected with the lower part of the desulfurization absorption tower 5, and the top of the desulfurization absorption tower 5 is connected with the middle part of the ammonia filter 6;
the top of the ammonia filter 6 is connected with the lower part of the ammonia absorption tower 7, the bottom of the ammonia absorption tower 7 is connected with the middle part of the dilute ammonia water tank 8, the bottom of the dilute ammonia water tank 8 sequentially passes through the ammonia water circulating pump 9 and the ammonia water cooler 10 and then is divided into three paths, one path is connected with the middle upper part of the ammonia absorption tower 7, the other path is connected with the top of the ammonia refining tower 1, the three paths are connected with the middle part of the concentrated ammonia water tank 13, and the bottom of the concentrated ammonia water tank 13 is discharged through the concentrated ammonia water pump 14;
the top of the concentrated ammonia water tank 13, the top of the dilute ammonia water tank 8 and the top of the ammonia absorption tower 7 are connected with the top of the water seal tank 11, and the bottom of the water seal tank 11 is connected with the upper part of the ammonia absorption tower 7 through the desalting water pump 12.
The gas input into the ammonia refining tower 1 is crude ammonia containing H2S.
The liquid input into the water sealed tank 11 is desalted water.
The working process comprises the following steps: the crude ammonia gas containing H2S from the stripping system enters the ammonia gas refining tower 1, after the desulfurization circulating liquid is pressurized by the desulfurization circulating pump 2, the desulfurization circulating liquid enters the upper part of the ammonia gas refining tower 2 after the temperature is reduced by the cryocooler 3, the crude ammonia gas is circularly washed, ammonia water from the dilute ammonia water tank 8 is led out to enter from the top of the ammonia gas refining tower 1, the crude ammonia gas is further washed, meanwhile, the ammonia gas is taken as the replenishing liquid of the ammonia gas refining tower 1, and the desulfurization ammonia liquid returns to the raw material water tank of the stripping system through the outlet pipeline of the desulfurization circulating pump 2 and the intermittent discharging system.
The crude ammonia gas washed by low-temperature strong ammonia water is discharged from the top of an ammonia gas refining tower 1, most of H2S is removed, then the crude ammonia gas enters an ammonia liquid separator 4, entrained ammonia liquid is separated, damage to a desulfurizing agent caused by the ammonia liquid is prevented, after the crude ammonia gas is adsorbed by a desulfurization absorption tower 5, H2S in the crude ammonia gas is basically completely removed to become pure ammonia gas, the pure ammonia gas enters an ammonia gas filter 6, the desulfurizing agent is prevented from being brought into an ammonia gas product, finally the ammonia gas enters an ammonia gas absorption tower 7, desalted water is used for circulating absorption, an ammonia water cooler 10 is arranged for taking away heat generated by dissolving ammonia in water, the ammonia gas absorption tower 7, a dilute ammonia water tank 8 and purge gas generated by a strong ammonia water tank 13 are together introduced into a water seal tank 11, and after the ammonia gas in the purge gas is absorbed by water, non-condensable gas is discharged into the atmosphere. The desalted water outside the boundary is fed into a water seal tank 11, pressurized by a desalted water pump 12, and then fed into the ammonia absorption tower 7 from the top of the ammonia absorption tower 7 as make-up water for the ammonia absorption tower 7.
The technology adopts a process route of low-temperature strong ammonia water washing, desulfurizing agent adsorption and desalted water circulating absorption to refine and purify high-concentration ammonia gas generated by a stripping system, H2S in crude ammonia gas is removed, then high-quality high-concentration ammonia water is prepared, the quality of the ammonia water can reach a high-quality product index, no auxiliary agent is needed in the whole process, and no byproduct is generated.
Claims (3)
1. The utility model provides a superior product aqueous ammonia device is prepared to crude ammonia, includes desulfurization circulating pump (2), cryocooler (3), ammonia water circulating pump (9), aqueous ammonia cooler (10), water seal tank (11), desalted water pump (12), strong ammonia water pump (14), its characterized in that: the device also comprises an ammonia refining tower (1), an ammonia liquid separator (4), a desulfurization absorption tower (5), an ammonia filter (6), an ammonia absorption tower (7), a dilute ammonia tank (8) and a concentrated ammonia tank (13);
the bottom of the ammonia refining tower (1) is connected with the middle upper part of the ammonia refining tower (1) sequentially through a desulfurization circulating pump (2) and a refrigerator (3), and is connected with one path through the desulfurization circulating pump (2) for discharge;
the top of the ammonia refining tower (1) is connected with the middle part of the ammonia liquid separator (4), and the bottom of the ammonia liquid separator (4) is connected with the lower part of the ammonia refining tower (1);
the top of the ammonia refining tower (1) is connected with the lower part of the desulfurization absorption tower (5), and the top of the desulfurization absorption tower (5) is connected with the middle part of the ammonia filter (6);
the top of the ammonia filter (6) is connected with the lower part of the ammonia absorption tower (7), the bottom of the ammonia absorption tower (7) is connected with the middle part of the dilute ammonia water tank (8), the bottom of the dilute ammonia water tank (8) is divided into three paths after sequentially passing through the ammonia water circulating pump (9) and the ammonia water cooler (10), one path is connected with the middle upper part of the ammonia absorption tower (7), the other path is connected with the top of the ammonia refining tower (1), the three paths are connected with the middle part of the concentrated ammonia water tank (13), and the bottom of the concentrated ammonia water tank (13) is discharged through the concentrated ammonia water pump (14);
the top of strong ammonia water tank (13), the top of weak ammonia water tank (8), the top of ammonia absorption tower (7) connect the top of water seal tank (11), the bottom of water seal tank (11) is connected ammonia absorption tower (7) upper portion through desalination water pump (12).
2. The apparatus for preparing superior ammonia water from crude ammonia gas as defined in claim 1, wherein: the gas input into the ammonia refining tower (1) is crude ammonia containing H2S.
3. The apparatus for preparing superior ammonia water from crude ammonia gas as defined in claim 1, wherein: the liquid input into the water sealed tank (11) is desalted water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321990802.2U CN220467589U (en) | 2023-07-27 | 2023-07-27 | Device for preparing superior ammonia water from crude ammonia gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321990802.2U CN220467589U (en) | 2023-07-27 | 2023-07-27 | Device for preparing superior ammonia water from crude ammonia gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220467589U true CN220467589U (en) | 2024-02-09 |
Family
ID=89777668
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321990802.2U Active CN220467589U (en) | 2023-07-27 | 2023-07-27 | Device for preparing superior ammonia water from crude ammonia gas |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220467589U (en) |
-
2023
- 2023-07-27 CN CN202321990802.2U patent/CN220467589U/en active Active
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| GR01 | Patent grant | ||
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