CN112494993A - Adsorption tower stripping system and stripping method thereof - Google Patents
Adsorption tower stripping system and stripping method thereof Download PDFInfo
- Publication number
- CN112494993A CN112494993A CN202011577232.5A CN202011577232A CN112494993A CN 112494993 A CN112494993 A CN 112494993A CN 202011577232 A CN202011577232 A CN 202011577232A CN 112494993 A CN112494993 A CN 112494993A
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- adsorption tower
- nitrogen
- stripping
- pipeline
- inlet
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- 238000001179 sorption measurement Methods 0.000 title claims abstract description 54
- 238000000034 method Methods 0.000 title claims abstract description 10
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 81
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 37
- 239000003463 adsorbent Substances 0.000 claims abstract description 9
- 239000004215 Carbon black (E152) Substances 0.000 claims abstract description 5
- 229930195733 hydrocarbon Natural products 0.000 claims abstract description 5
- 150000002430 hydrocarbons Chemical class 0.000 claims abstract description 5
- 238000010438 heat treatment Methods 0.000 claims description 17
- 239000007789 gas Substances 0.000 claims description 8
- 229910001873 dinitrogen Inorganic materials 0.000 claims description 7
- 239000007788 liquid Substances 0.000 claims description 6
- 238000005070 sampling Methods 0.000 claims description 2
- 239000002699 waste material Substances 0.000 abstract description 9
- 239000003795 chemical substances by application Substances 0.000 abstract description 4
- 239000000126 substance Substances 0.000 abstract description 2
- 239000002351 wastewater Substances 0.000 description 3
- 238000000926 separation method Methods 0.000 description 2
- 150000004945 aromatic hydrocarbons Chemical class 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000003889 chemical engineering Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D15/00—Separating processes involving the treatment of liquids with solid sorbents; Apparatus therefor
- B01D15/08—Selective adsorption, e.g. chromatography
- B01D15/10—Selective adsorption, e.g. chromatography characterised by constructional or operational features
- B01D15/20—Selective adsorption, e.g. chromatography characterised by constructional or operational features relating to the conditioning of the sorbent material
- B01D15/203—Equilibration or regeneration
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G25/00—Refining of hydrocarbon oils in the absence of hydrogen, with solid sorbents
- C10G25/12—Recovery of used adsorbent
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Analytical Chemistry (AREA)
- Engineering & Computer Science (AREA)
- General Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Treating Waste Gases (AREA)
- Separation Of Gases By Adsorption (AREA)
Abstract
The invention belongs to the technical field of chemical industry, and particularly relates to an adsorption tower stripping system and a stripping method thereof. The invention uses the hot nitrogen system to strip the waste agent in the adsorption tower, removes the waste oil in the adsorbent and ensures that the hydrocarbon content of the adsorbent in the adsorption tower is qualified.
Description
Technical Field
The invention belongs to the field of chemical engineering, and particularly relates to an adsorption tower stripping system and a stripping method thereof.
Background
Steam stripping means that volatile toxic and harmful substances in the wastewater are diffused into a gas phase according to a certain proportion by directly contacting the wastewater with steam, so that the purpose of separating pollutants from the wastewater is achieved. When the adsorption tower of the adsorption unit of the aromatic hydrocarbon factory stops, the waste agent in the adsorption tower needs to be discharged and delivered to a waste agent treatment factory for safe treatment. However, because the oil is stored in the pores of the adsorbent, the oil is directly delivered to a waste treatment factory for treatment, which causes waste, and the waste treatment also increases the cost.
Disclosure of Invention
In view of the above-mentioned drawbacks of the prior art, the present invention provides a stripping system for an adsorption tower, which is connected to a hot nitrogen system for stripping the adsorption tower with hot nitrogen.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows: the adsorption tower stripping system comprises an adsorption tower and a nitrogen circulating pipeline connected with an inlet and an outlet of the adsorption tower, wherein a heating furnace is connected to the nitrogen circulating pipeline, and the inlet of the heating furnace is connected with a nitrogen inlet pipeline.
Further, the outlet of the adsorption tower is sequentially connected with an air cooler, a high-pressure separator, a compressor and a heating furnace through a nitrogen circulating pipeline, and the outlet of the heating furnace is connected to the inlet of the adsorption tower through the nitrogen circulating pipeline.
Further, the inlet of the heating furnace is connected with a nitrogen pipe network through a nitrogen inlet pipeline.
Further, the nitrogen inlet line is disposed between the compressor outlet and the furnace inlet.
Further, the bottom of the high branch tank is connected with a liquid drainage underground tank.
Further, the compressor flow is 7000M3/h。
Furthermore, the adsorption tower comprises a plurality of beds, each bed is provided with a set of stripping system, and a nitrogen circulating pipeline is connected to an inlet pipeline and an outlet pipeline of each bed.
The stripping method of adsorption tower is characterized by that in every bed layer of adsorption tower the nitrogen gas whose pressure is above 0.5MPa and temp. is fed into every bed layer to make every bed layer implement stripping alone so as to remove oil gas from adsorbent, and the removed oil gas is fed into high-molecular tank.
Furthermore, after the steam stripping is finished, the hydrocarbon content of the last layer of sampling of the adsorption tower is less than 100ppm and is qualified.
Further, the nitrogen gas is circulated by the compressor, and the working flow of the compressor is 7000M3/h。
The invention has the beneficial effects that: the invention uses the hot nitrogen system to strip the waste agent in the adsorption tower, removes the waste oil in the adsorbent and ensures that the hydrocarbon content of the adsorbent in the adsorption tower is qualified.
Drawings
FIG. 1 is a process flow diagram of a stripping system of an adsorption tower;
in the figure: 1. the system comprises an adsorption tower, 2, an air cooler, 3, a high-pressure separation tank, 4, a compressor, 5, a heating furnace, 6, a nitrogen inlet pipeline, 7, a nitrogen circulating pipeline, A and a liquid discharge underground tank.
Detailed Description
In order to make the structure and function of the present invention clearer, the technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention.
Referring to the attached drawing 1, the adsorption tower stripping system comprises an adsorption tower 1 and a nitrogen circulating pipeline 7 connected with an inlet and an outlet of the adsorption tower, wherein the outlet of the adsorption tower is sequentially connected with an air cooler 2, a high molecular tank 3, a compressor 4 and a heating furnace 5 through the nitrogen circulating pipeline 7, nitrogen is heated to more than 190 ℃ through the heating furnace 5, the outlet of the heating furnace 5 is connected to the inlet of the adsorption tower through the nitrogen circulating pipeline 7, the inlet of the heating furnace is connected with a nitrogen pipe network through a nitrogen inlet pipeline 6, and the nitrogen inlet pipeline 6 is arranged between the outlet of the compressor 4 and the inlet of the heating furnace 5.
Based on the technical scheme, the high-pressure 2.0Mpa nitrogen of the nitrogen pipe network is supplemented from the outlet of the compressor, the nitrogen circulating pipeline is kept above 0.5Mpa, and the nitrogen can be realizedThe stripping function is now present. Then the compressor is started to establish a nitrogen circulation system. The working flow of the compressor is controlled at 7000M3/h。
Further, the bottom of the high-pressure separation tank 3 is connected with a drainage underground tank.
Further, the adsorption tower 1 comprises a plurality of beds, each bed is provided with a set of stripping system, and a nitrogen circulating pipeline is connected to an inlet pipeline and an outlet pipeline of each bed.
The stripping method of adsorption tower is characterized by that in every bed layer of adsorption tower the nitrogen gas whose pressure is above 0.5MPa and temp. is fed into every bed layer to make every bed layer implement stripping alone so as to remove oil gas from adsorbent, and the removed oil gas is fed into high-molecular tank.
Based on the technical scheme, 24 bed layers are respectively stripped by opening the extract liquid and raffinate switch valve of each layer of adsorption tower, C8A in the adsorbent is removed by stripping each layer, the removed oil gas is sent to a high-molecular tank, and after the stripping is finished, the content of the sampled hydrocarbon in the last layer of the adsorption tower is qualified when the content is less than 100 ppm.
The invention provides a new pipeline for the extract liquid and the raffinate at the top of an adsorption tower, and a new pipeline for the extract liquid and the raffinate at the bottom of the adsorption tower, which is connected with a hot nitrogen system, and uses hot nitrogen to strip steam for the adsorption tower.
The above list is only the preferred embodiment of the present invention. It is obvious that the invention is not limited to the above embodiments, but that many variations are possible. All modifications which can be derived or suggested by a person skilled in the art from the disclosure of the present invention are to be considered within the scope of the invention.
Claims (10)
1. Adsorption column stripping system, its characterized in that: the device comprises an adsorption tower and a nitrogen circulating pipeline connected with an inlet and an outlet of the adsorption tower, wherein a heating furnace is connected to the nitrogen circulating pipeline, and the inlet of the heating furnace is connected with a nitrogen inlet pipeline.
2. The adsorption column stripping system of claim 1, wherein: the export of adsorption tower has connected gradually air cooler, high branch jar, compressor and heating furnace through nitrogen gas circulation pipeline, the export of heating furnace is connected to the adsorption tower entry through nitrogen gas circulation pipeline.
3. The adsorption column stripping system of claim 1, wherein: and the inlet of the heating furnace is connected with a nitrogen pipe network through a nitrogen inlet pipeline.
4. The adsorption column stripping system of claim 2, wherein: the nitrogen inlet pipeline is arranged between the outlet of the compressor and the inlet of the heating furnace.
5. The adsorption column stripping system of claim 2, wherein: the bottom of the high-branch tank is connected with a liquid drainage underground tank.
6. The adsorption column stripping system of claim 2, wherein: the flow rate of the compressor is 7000M3/h。
7. The adsorption column stripping system according to any one of claims 1 to 6, wherein: the adsorption tower comprises a plurality of beds, each bed is provided with a set of stripping system, and a nitrogen circulating pipeline is connected to an inlet pipeline and an outlet pipeline of each bed.
8. The adsorption tower stripping method is characterized in that: introducing nitrogen gas of more than 0.5Mpa and 190 ℃ into each bed layer of the adsorption tower, independently stripping each bed layer, removing oil gas in the adsorbent, and delivering the removed oil gas to a high-molecular tank.
9. The adsorption column stripping process of claim 8, wherein: after the stripping is finished, the hydrocarbon content of the last layer of the sampling of the adsorption tower is less than 100ppm and is qualified.
10. The adsorption column stripping process of claim 8, wherein: the nitrogen gas is circulated by the compressor, and the working flow of the compressor is 7000M3/h。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011577232.5A CN112494993A (en) | 2020-12-28 | 2020-12-28 | Adsorption tower stripping system and stripping method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011577232.5A CN112494993A (en) | 2020-12-28 | 2020-12-28 | Adsorption tower stripping system and stripping method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112494993A true CN112494993A (en) | 2021-03-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011577232.5A Pending CN112494993A (en) | 2020-12-28 | 2020-12-28 | Adsorption tower stripping system and stripping method thereof |
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| Country | Link |
|---|---|
| CN (1) | CN112494993A (en) |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0724238A (en) * | 1993-07-09 | 1995-01-27 | Teisan Kk | Method for regenerating adsorber in argon refining equipment |
| CN1139583A (en) * | 1995-06-30 | 1997-01-08 | 中国石化茂名石油化工公司 | Nitrogen circular stripping process and equipment thereof |
| CN1749360A (en) * | 2004-09-18 | 2006-03-22 | 宁波海曙洁源气体处理工程有限公司 | Process and flow for recovering hydrocarbon component from hydrocarbon containing gas |
| CN202238066U (en) * | 2011-08-31 | 2012-05-30 | 济南钢铁股份有限公司 | Device for product nitrogen gas to participate in molecular sieve adsorber regeneration |
| CN102580463A (en) * | 2011-12-27 | 2012-07-18 | 中国寰球工程公司 | System and method for recovering oil gas |
| CN103111157A (en) * | 2013-01-30 | 2013-05-22 | 陕西天宏硅材料有限责任公司 | Method for purifying and recovering discharge tail gas of regeneration process of adsorption tower in polycrystalline silicon production |
| CN103467229A (en) * | 2013-09-18 | 2013-12-25 | 中石化上海工程有限公司 | Method for separating n-alkane from isoparaffin by combining pressure swing adsorption and membrane separation |
| WO2014173593A2 (en) * | 2013-04-22 | 2014-10-30 | Shell Internationale Research Maatschappij B.V. | Method and apparatus for producing a liquefied hydrocarbon stream |
| CN105521622A (en) * | 2014-09-30 | 2016-04-27 | 中国石油化工股份有限公司 | Simulated moving bed adsorption tower external pipeline leaching device and application thereof in adsorptive separation |
| CN109289432A (en) * | 2017-07-24 | 2019-02-01 | 杭州大伟装饰材料有限公司 | A kind of organic exhaust gas nitrogen desorption recovery process |
| CN212222484U (en) * | 2020-04-29 | 2020-12-25 | 赛恩斯环保股份有限公司 | Integrated device for treating wastewater through macroporous resin adsorption and resin gas stripping desorption |
| CN214634198U (en) * | 2020-12-28 | 2021-11-09 | 大连福佳·大化石油化工有限公司 | Adsorption tower steam stripping system |
-
2020
- 2020-12-28 CN CN202011577232.5A patent/CN112494993A/en active Pending
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0724238A (en) * | 1993-07-09 | 1995-01-27 | Teisan Kk | Method for regenerating adsorber in argon refining equipment |
| CN1139583A (en) * | 1995-06-30 | 1997-01-08 | 中国石化茂名石油化工公司 | Nitrogen circular stripping process and equipment thereof |
| CN1749360A (en) * | 2004-09-18 | 2006-03-22 | 宁波海曙洁源气体处理工程有限公司 | Process and flow for recovering hydrocarbon component from hydrocarbon containing gas |
| CN202238066U (en) * | 2011-08-31 | 2012-05-30 | 济南钢铁股份有限公司 | Device for product nitrogen gas to participate in molecular sieve adsorber regeneration |
| CN102580463A (en) * | 2011-12-27 | 2012-07-18 | 中国寰球工程公司 | System and method for recovering oil gas |
| CN103111157A (en) * | 2013-01-30 | 2013-05-22 | 陕西天宏硅材料有限责任公司 | Method for purifying and recovering discharge tail gas of regeneration process of adsorption tower in polycrystalline silicon production |
| WO2014173593A2 (en) * | 2013-04-22 | 2014-10-30 | Shell Internationale Research Maatschappij B.V. | Method and apparatus for producing a liquefied hydrocarbon stream |
| CN103467229A (en) * | 2013-09-18 | 2013-12-25 | 中石化上海工程有限公司 | Method for separating n-alkane from isoparaffin by combining pressure swing adsorption and membrane separation |
| CN105521622A (en) * | 2014-09-30 | 2016-04-27 | 中国石油化工股份有限公司 | Simulated moving bed adsorption tower external pipeline leaching device and application thereof in adsorptive separation |
| CN109289432A (en) * | 2017-07-24 | 2019-02-01 | 杭州大伟装饰材料有限公司 | A kind of organic exhaust gas nitrogen desorption recovery process |
| CN212222484U (en) * | 2020-04-29 | 2020-12-25 | 赛恩斯环保股份有限公司 | Integrated device for treating wastewater through macroporous resin adsorption and resin gas stripping desorption |
| CN214634198U (en) * | 2020-12-28 | 2021-11-09 | 大连福佳·大化石油化工有限公司 | Adsorption tower steam stripping system |
Non-Patent Citations (1)
| Title |
|---|
| 程代展: "《第26届中国控制会议论文集 第5册》", 北京航空航天大学出版社, pages: 383 - 361 * |
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