CN219752243U - Sulfide-containing alkali liquor back-extraction fiber membrane contactor device - Google Patents
Sulfide-containing alkali liquor back-extraction fiber membrane contactor device Download PDFInfo
- Publication number
- CN219752243U CN219752243U CN202321105612.8U CN202321105612U CN219752243U CN 219752243 U CN219752243 U CN 219752243U CN 202321105612 U CN202321105612 U CN 202321105612U CN 219752243 U CN219752243 U CN 219752243U
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- CN
- China
- Prior art keywords
- alkali liquor
- extraction solvent
- extraction
- separation tank
- sulfide
- Prior art date
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- 238000000605 extraction Methods 0.000 title claims abstract description 119
- 239000003513 alkali Substances 0.000 title claims abstract description 81
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 title claims abstract description 20
- 239000000835 fiber Substances 0.000 title claims abstract description 18
- 239000012528 membrane Substances 0.000 title claims abstract description 18
- 239000002904 solvent Substances 0.000 claims abstract description 107
- 238000000926 separation method Methods 0.000 claims abstract description 43
- 239000003054 catalyst Substances 0.000 claims description 19
- 239000006260 foam Substances 0.000 claims description 10
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 abstract description 78
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 abstract description 14
- 229910052717 sulfur Inorganic materials 0.000 abstract description 14
- 239000011593 sulfur Substances 0.000 abstract description 14
- 230000003647 oxidation Effects 0.000 abstract description 7
- 238000007254 oxidation reaction Methods 0.000 abstract description 7
- 229910052979 sodium sulfide Inorganic materials 0.000 abstract description 7
- 230000008929 regeneration Effects 0.000 abstract description 6
- 238000011069 regeneration method Methods 0.000 abstract description 6
- HYHCSLBZRBJJCH-UHFFFAOYSA-M sodium hydrosulfide Chemical compound [Na+].[SH-] HYHCSLBZRBJJCH-UHFFFAOYSA-M 0.000 abstract description 4
- LSDPWZHWYPCBBB-UHFFFAOYSA-N Methanethiol Chemical compound SC LSDPWZHWYPCBBB-UHFFFAOYSA-N 0.000 abstract description 3
- 238000000034 method Methods 0.000 abstract description 3
- 150000004763 sulfides Chemical class 0.000 abstract description 3
- 239000002699 waste material Substances 0.000 description 7
- 238000006477 desulfuration reaction Methods 0.000 description 6
- 230000023556 desulfurization Effects 0.000 description 6
- GRVFOGOEDUUMBP-UHFFFAOYSA-N sodium sulfide (anhydrous) Chemical compound [Na+].[Na+].[S-2] GRVFOGOEDUUMBP-UHFFFAOYSA-N 0.000 description 4
- QPUSANCBJDDXSA-UHFFFAOYSA-N ethanethiol;sodium Chemical compound [Na].CCS QPUSANCBJDDXSA-UHFFFAOYSA-N 0.000 description 3
- XHXXWWGGXFUMAJ-UHFFFAOYSA-N methanethiol;sodium Chemical compound [Na].SC XHXXWWGGXFUMAJ-UHFFFAOYSA-N 0.000 description 3
- DNJIEGIFACGWOD-UHFFFAOYSA-N ethanethiol Chemical compound CCS DNJIEGIFACGWOD-UHFFFAOYSA-N 0.000 description 2
- 239000002893 slag Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 1
- 239000012670 alkaline solution Substances 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- -1 cobalt phthalide Chemical compound 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 229910000037 hydrogen sulfide Inorganic materials 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 125000001741 organic sulfur group Chemical group 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
Landscapes
- Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
- Extraction Or Liquid Replacement (AREA)
Abstract
The utility model relates to the technical field of oil product fiber membrane contactors, in particular to a sulfide-containing alkali liquor back-extraction fiber membrane contactor device; the method comprises an alkali liquor heater, an alkali liquor oxidation tower, an extraction solvent separation tank I and an extraction solvent separation tank II, wherein sulfur-containing alkali liquor after mercaptan removal is heated by the alkali liquor heater, enters the alkali liquor oxidation tower together with air and an extraction solvent for oxidation regeneration and preliminary extraction, and in the oxidation tower, sodium mercaptide is reduced into sodium hydroxide and sulfide after oxidation regeneration, and the sulfide is dissolved in the solvent; after the alkali liquor and the extraction solvent are cooled by an alkali liquor cooler, the alkali liquor is separated into a first solvent separating tank and then is contacted with an alkali liquor counter-extraction fiber membrane on a second extraction solvent separating tank, and the alkali liquor and the fresh extraction solvent are fully contacted, so that sulfides in the alkali liquor are further dissolved in the solvent, the alkali liquor is purified, the total sulfur removal rate of the oil product is improved, and the total sulfur content of the oil product is greatly reduced.
Description
Technical Field
The utility model relates to the technical field of oil product fiber membrane contactors, in particular to a sulfide-containing alkali liquor back extraction fiber membrane contactor device.
Background
In the desulfurization process of the oil product fiber membrane contactor, an aqueous solution of sodium hydroxide is used for removing organic sulfur in hydrocarbon. The sodium hydroxide converts methyl mercaptan, ethyl mercaptan and a small amount of hydrogen sulfide into sodium methyl mercaptan, sodium ethyl mercaptan and sodium sulfide respectively, so that the sodium methyl mercaptan, the sodium ethyl mercaptan and the sodium sulfide are dissolved in alkali liquor, and the sulfur removal is achieved by extracting the sodium methyl mercaptan, the sodium ethyl mercaptan and the sodium sulfide from oil products into the alkali liquor. Sodium mercaptide and sodium sulfide are mixed in alkali liquor to form alkali slag, and the alkali slag is oxidized and regenerated under the action of a catalyst (liquid cobalt phthalide) for recycling.
However, in the prior art, after the sulfur-containing alkali liquor is oxidized and regenerated, the consumption of sodium hydroxide alkali liquor and the discharge amount of waste alkali liquor are large, so that the desulfurization rate of the oil product cannot be ensured, and the sulfur content of the oil product is greatly increased.
Disclosure of Invention
The utility model aims to provide a fiber membrane contactor device for back extraction of sulfide-containing alkali liquor, which aims to solve the technical problems that in the prior art, after the sulfur-containing alkali liquor is oxidized and regenerated, the consumption of sodium hydroxide alkali liquor is high and the discharge amount of waste alkali liquor is high, so that the desulfurization rate of an oil product cannot be ensured, and the sulfur content of the oil product is greatly increased.
In order to achieve the above purpose, the fiber membrane contactor device for back extraction of sulfide-containing lye comprises a lye heater, a first extraction solvent separation tank and a second extraction solvent separation tank, wherein one side of the lye heater is provided with a first catalyst injector, a first extraction solvent conveying pump is arranged below the first extraction solvent separation tank, a regenerated lye circulating pump and a second extraction solvent circulating pump are arranged below the second extraction solvent separation tank, the regenerated lye circulating pump is positioned on one side of the first extraction solvent circulating pump, the lye heater is communicated with the first extraction solvent separation tank through a lye cooler and positioned at one end of the first extraction solvent separation tank, and the first extraction solvent separation tank is communicated with the second extraction solvent separation tank and positioned at one end of the second extraction solvent separation tank.
The alkali liquor heater comprises an alkali liquor cooler and an alkali liquor heater body, wherein the alkali liquor cooler is communicated with the alkali liquor heater body and is positioned on one side of the alkali liquor heater body, and the alkali liquor cooler is also communicated with the extraction solvent separation tank I.
The first extraction solvent separating tank comprises a first foam removing net and a first extraction solvent separating tank body, the first foam removing net is fixedly connected with the first extraction solvent separating tank body and is positioned on the first extraction solvent separating tank body, the alkali liquor cooler is further communicated with the first extraction solvent separating tank body, and the first extraction solvent separating tank body is communicated with the second extraction solvent separating tank body.
The second extraction solvent separation tank comprises a second defoaming net and a second extraction solvent separation tank body, and the second defoaming net is fixedly connected with the second extraction solvent separation tank body and is positioned on the second extraction solvent separation tank body.
The second extraction solvent separating tank further comprises a second catalyst injector, wherein the second catalyst injector is communicated with the second extraction solvent separating tank body and is positioned at one end of the second extraction solvent separating tank body, and the first extraction solvent separating tank body is communicated with the second catalyst injector.
According to the sulfide-containing alkali liquor back extraction fiber membrane contactor device, after the sulfur-containing alkali liquor is subjected to oxidation regeneration, sodium mercaptide is reduced into sodium hydroxide and sulfide, so that consumption of sodium hydroxide alkali liquor can be greatly reduced, emission of waste alkali liquor is greatly reduced, and alkali liquor circulation amount and waste alkali liquor emission are reduced by 80-90% compared with alkali liquor-free regeneration and back extraction processes. And through the solvent stripping, sulfides in the alkali liquor can be dissolved in the solvent, so that the alkali liquor is purified, the sulfides are prevented from returning to the oil product along with the alkali liquor, the desulfurization rate of the oil product can be ensured, and the sulfur content of the oil product is greatly reduced.
Drawings
In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of the structure of the sulfide-containing lye counter-extraction fiber membrane contactor device of the present utility model.
1-alkali liquor heater, 2-extraction solvent separating tank I, 3-extraction solvent separating tank II, 4-catalyst injector I, 5-extraction solvent conveying pump, 6-alkali liquor cooler, 7-foam removing net I, 8-foam removing net II, 9-catalyst injector II, 10-regenerated alkali liquor circulating pump and 11-extraction solvent circulating pump.
Detailed Description
Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present utility model and should not be construed as limiting the utility model.
Referring to fig. 1, the utility model provides a fiber membrane contactor device for back extraction of sulfide-containing lye, which comprises a lye heater 1, a first extraction solvent separating tank 2 and a second extraction solvent separating tank 3, wherein one side of the lye heater 1 is provided with a first catalyst injector 4, a second extraction solvent conveying pump 5 is arranged below the first extraction solvent separating tank 2, a regenerated lye circulating pump 10 and a second extraction solvent circulating pump 11 are arranged below the second extraction solvent separating tank 3, the regenerated lye circulating pump 10 is positioned on one side of the second extraction solvent circulating pump 11, the lye heater 1 is communicated with the first extraction solvent separating tank 2 through a lye cooler 6 and is positioned at one end of the first extraction solvent separating tank 2, and the first extraction solvent separating tank 2 is communicated with the second extraction solvent separating tank 3 and is positioned at one end of the second extraction solvent separating tank 3.
In the embodiment, after the sulfur-containing alkali liquor is oxidized and regenerated, sodium mercaptide is reduced into sodium hydroxide and sulfide, so that the consumption of sodium hydroxide alkali liquor can be greatly reduced, the discharge amount of waste alkali liquor is greatly reduced, and the alkali liquor circulation amount and the discharge amount of waste alkali liquor are reduced by 80-90% compared with those of alkali liquor-free regeneration and reverse extraction processes. Moreover, sulfide in the alkali liquor can be dissolved in the solvent through solvent back extraction, so that the alkali liquor is purified, sulfide is prevented from returning to the oil product along with the alkali liquor, the desulfurization rate of the oil product can be ensured, the sulfur content of the oil product is greatly reduced, the technical problems that after the sulfur-containing alkali liquor is subjected to oxidation regeneration, the consumption of sodium hydroxide alkali liquor is high, the discharge amount of waste alkali liquor is high, the desulfurization rate of the oil product cannot be ensured, the sulfur content of the oil product is greatly increased are solved, the alkali liquor heater 1 can heat the alkali liquor, the first extraction solvent separation tank 2 and the second extraction solvent separation tank 3 can separate the alkali liquor, the first catalyst injector 4 can facilitate the input of a catalyst, and the extraction solvent conveying pump 5 can facilitate the conveying of the extraction solvent.
Further, the lye heater 1 comprises a lye cooler 6 and a lye heater body, wherein the lye cooler 6 is communicated with the lye heater body and is positioned at one side of the lye heater body, and the lye cooler 6 is also communicated with the extraction solvent separation tank I2.
In this embodiment, the lye can be cooled by the lye cooler 6.
Further, the first extraction solvent separating tank 2 comprises a first foam removing net 7 and a first extraction solvent separating tank body, the first foam removing net 7 is fixedly connected with the first extraction solvent separating tank body and is positioned on the first extraction solvent separating tank body, the alkali liquor cooler 6 is also communicated with the first extraction solvent separating tank body, and the first extraction solvent separating tank body is communicated with the second extraction solvent separating tank 3.
In this embodiment, the first demister net 7 may be used in combination with the first extraction solvent separation tank body to separate the alkali solution.
Further, the extraction solvent separation tank II 3 comprises a foam removing net II 8 and an extraction solvent separation tank II body, and the foam removing net II 8 is fixedly connected with the extraction solvent separation tank II body and is positioned on the extraction solvent separation tank II body.
In this embodiment, the second demister mesh 8 may be used in combination with the second extraction solvent separation tank body to separate the alkaline solution.
Further, the second extraction solvent separating tank further comprises a second catalyst injector 9, the second catalyst injector 9 is communicated with the second extraction solvent separating tank body and is located at one end of the second extraction solvent separating tank body, and the first extraction solvent separating tank body is communicated with the second catalyst injector 9.
In the present embodiment, the catalyst injection is facilitated by the second catalyst injector 9.
The above disclosure is only a preferred embodiment of the present utility model, and it should be understood that the scope of the utility model is not limited thereto, and those skilled in the art will appreciate that all or part of the procedures described above can be performed according to the equivalent changes of the claims, and still fall within the scope of the present utility model.
Claims (5)
1. A sulfide-containing alkali liquor back-extraction fiber membrane contactor device is characterized in that,
the device comprises an alkali liquor heater, an extraction solvent separation tank I and an extraction solvent separation tank II, wherein a catalyst injector I is arranged on one side of the alkali liquor heater, an extraction solvent conveying pump is arranged below the extraction solvent separation tank I, a regenerated alkali liquor circulating pump and an extraction solvent circulating pump are arranged below the extraction solvent separation tank II, the regenerated alkali liquor circulating pump is positioned on one side of the extraction solvent circulating pump, the alkali liquor heater is communicated with the extraction solvent separation tank I through an alkali liquor cooler and is positioned at one end of the extraction solvent separation tank I, and the extraction solvent separation tank I is communicated with the extraction solvent separation tank II and is positioned at one end of the extraction solvent separation tank II.
2. A sulfide-containing lye counter-extraction fiber membrane contactor device according to claim 1, wherein,
the alkali liquor heater comprises an alkali liquor cooler and an alkali liquor heater body, wherein the alkali liquor cooler is communicated with the alkali liquor heater body and is positioned on one side of the alkali liquor heater body, and the alkali liquor cooler is also communicated with the extraction solvent separation tank I.
3. A sulfide-containing lye counter-extraction fiber membrane contactor device according to claim 2, wherein,
the extraction solvent separating tank I comprises a foam removing net I and an extraction solvent separating tank I body, wherein the foam removing net I is fixedly connected with the extraction solvent separating tank I body and is positioned on the extraction solvent separating tank I body, the alkali liquor cooler is also communicated with the extraction solvent separating tank I body, and the extraction solvent separating tank I body is communicated with the extraction solvent separating tank II.
4. A sulfide-containing lye counter-extraction fiber membrane contactor device according to claim 3,
the second extraction solvent separation tank comprises a second defoaming net and a second extraction solvent separation tank body, and the second defoaming net is fixedly connected with the second extraction solvent separation tank body and is positioned on the second extraction solvent separation tank body.
5. A sulfide-containing lye counter-extraction fiber membrane contactor device according to claim 4, wherein,
the extraction solvent separation tank II further comprises a catalyst injector II, wherein the catalyst injector II is communicated with the extraction solvent separation tank II body and is positioned at one end of the extraction solvent separation tank II body, and the extraction solvent separation tank I is communicated with the catalyst injector II.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321105612.8U CN219752243U (en) | 2023-05-10 | 2023-05-10 | Sulfide-containing alkali liquor back-extraction fiber membrane contactor device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321105612.8U CN219752243U (en) | 2023-05-10 | 2023-05-10 | Sulfide-containing alkali liquor back-extraction fiber membrane contactor device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219752243U true CN219752243U (en) | 2023-09-26 |
Family
ID=88088398
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321105612.8U Active CN219752243U (en) | 2023-05-10 | 2023-05-10 | Sulfide-containing alkali liquor back-extraction fiber membrane contactor device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219752243U (en) |
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2023
- 2023-05-10 CN CN202321105612.8U patent/CN219752243U/en active Active
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