CN112546675B - Improved structure of adsorption tower stripping of bed leakage agent - Google Patents
Improved structure of adsorption tower stripping of bed leakage agent Download PDFInfo
- Publication number
- CN112546675B CN112546675B CN202011574764.3A CN202011574764A CN112546675B CN 112546675 B CN112546675 B CN 112546675B CN 202011574764 A CN202011574764 A CN 202011574764A CN 112546675 B CN112546675 B CN 112546675B
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- Prior art keywords
- pipeline
- stripping
- filter
- line
- raffinate
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- 238000001179 sorption measurement Methods 0.000 title claims abstract description 20
- 238000000605 extraction Methods 0.000 claims abstract description 35
- 239000007788 liquid Substances 0.000 claims abstract description 31
- 238000001914 filtration Methods 0.000 claims abstract description 7
- 230000005540 biological transmission Effects 0.000 claims description 5
- 239000003463 adsorbent Substances 0.000 abstract description 14
- 239000003795 chemical substances by application Substances 0.000 abstract description 9
- 238000000034 method Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
Classifications
-
- 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
- B01D15/24—Selective adsorption, e.g. chromatography characterised by constructional or operational features relating to the treatment of the fractions to be distributed
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
- B01D35/02—Filters adapted for location in special places, e.g. pipe-lines, pumps, stop-cocks
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Analytical Chemistry (AREA)
- Treatment Of Liquids With Adsorbents In General (AREA)
Abstract
The invention relates to a technology for filtering an adsorbent during the steam stripping of an adsorption tower of a bed leakage agent, in particular to an improved steam stripping structure of the adsorption tower of the bed leakage agent, which comprises the following steps: a raffinate system, and a stripping line; the extraction liquid system and the raffinate system are connected through pipelines and are commonly connected to a stripping line, and the stripping line is connected to a compressor; the outlet lower line of the raffinate system is connected to the first pipeline through a second pipeline and is connected with the stripping line through the first pipeline; after improvement, when the adsorbent is changed, the adsorbent is prevented from being brought into the compressor to damage the compressor in the stripping step, and the stripping operation is ensured to be carried out smoothly.
Description
Technical Field
The invention relates to a technology for filtering an adsorbent during stripping of an adsorption tower with a bed leakage agent, in particular to an improved structure for stripping of the adsorption tower with the bed leakage agent, and belongs to the field of petrochemical industry.
Background
In the petrochemical field, when the adsorbent is replaced by the adsorption tower, the adsorbent is carried out in the stripping step and is carried into the compressor, so that the compressor is damaged, and the stripping operation cannot be continued.
Disclosure of Invention
In view of the above-mentioned technical problems, the present invention aims to provide an improved structure for stripping of a bed leakage agent in an adsorption tower, which prevents the damage to a compressor caused by the fact that the adsorbent is brought into the compressor in the stripping step when the adsorption tower is replaced after the improvement, and ensures that the stripping operation is smoothly performed.
In order to achieve the above purpose, the invention utilizes the original filter to filter the leaked adsorbent by respectively communicating the effluent and the raffinate lower line with the stripping line, and adopts the following technical scheme: improved structure of adsorption tower stripping of bed leakage agent, including: a raffinate system, and a stripping line; the extraction liquid system and the raffinate system are connected through pipelines and are commonly connected to a stripping line, and the stripping line is connected to a compressor; the outlet lower line of the raffinate system is connected to the first pipeline through a second pipeline and is connected with the stripping line through the first pipeline;
further, valves are respectively arranged at two ends of a pipeline connected between the liquid extraction system and the liquid extraction system, and an 8-shaped blind plate is connected to the valves;
further, the extraction fluid system includes: the extraction liquid pipeline is connected with a filter system, a flow control valve lower line is arranged near the outlet of the extraction liquid pipeline and is connected with the inlet end of a first pipeline, and the outlet end of the first pipeline is connected with the stripping pipeline;
further, the extraction liquid pipeline adopts a DN200 pipeline;
further, the filter system includes: the device comprises a first filter, a second filter, a first filter front-rear valve and a second filter front-rear valve, wherein the first filter and the second filter are connected on an extraction liquid pipeline in a parallel mode;
further, the first filter and the second filter are standby;
furthermore, the extraction liquid pipeline above the filter system is also provided with a flow transmission instrument and a temperature indication instrument, so that the flow and the temperature reading of the extraction liquid passing through the extraction pipeline are convenient;
further, the first pipeline adopts a DN200,2TB pipeline;
further, the raffinate system comprises: the device comprises a raffinate pipeline, a filter system is connected to the raffinate pipeline, a pressure control valve lower line is arranged near an outlet of the raffinate pipeline, the pressure control valve lower line is connected with an inlet end of a second pipeline, an outlet end of the second pipeline is connected with a first pipeline, and the second pipeline is connected with a stripping line in an indirect mode;
further, the raffinate pipeline adopts a DN350 pipeline;
further, the filtration system of the raffinate system comprises: the front end and the rear end of the filter are respectively provided with a valve;
furthermore, a flow transmission instrument and a temperature indication instrument are further arranged on the raffinate pipeline above the filter system, so that flow and temperature readings of the raffinate when the raffinate passes through the extract pipeline are facilitated;
further, the second pipeline adopts DN350,2TB pipeline;
further, a stripping line total gate valve is arranged below the intersection point position of the pipeline connected with the extraction liquid pipeline and the raffinate pipeline and the stripping line, a three-way valve is arranged on the stripping line at the rear end of the total gate valve, and the three-way valve is connected with the first pipeline.
By adopting the improved stripping line structure and the filter flow, the leaked adsorbent can be filtered, and the specific operation flow is as follows:
the extraction liquid enters through an extraction liquid pipeline, is filtered in a filter system of the extraction liquid pipeline, and enters into a stripping line through a first pipeline for stripping after being filtered; the raffinate enters through a raffinate pipeline, is filtered in a filter system of the raffinate pipeline, enters into a first pipeline through a second pipeline after being filtered, and enters into a stripping line from the first pipeline for stripping; the above process filters the leaked adsorbent after filtering in the filter by the draw-off system and the raffinate system, thereby avoiding the adsorbent being brought into the compressor during stripping.
Drawings
FIG. 1 is a process flow diagram of the present invention prior to modification.
Fig. 2 is a modified process flow diagram of the present invention.
In the figure, 1, stripping line, 2, first line, 3, second line, 4, draw line, 6, filter system, 7, flow transfer meter, 8, temperature indicator meter, 9, raffinate line, 10, stripping line total gate valve.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings.
As shown in fig. 2, the improved structure of the adsorption tower stripping of the bed leakage agent comprises: a raffinate system, and a stripping line 1; the extraction liquid system and the raffinate system are connected through pipelines and are commonly connected to a stripping line 1, and the stripping line 1 is connected to a compressor; the outlet lower line of the raffinate system is connected with the stripping line 1 through a first pipeline 2, is connected to the first pipeline 2 through a second pipeline 3 and is connected with the stripping line 1 through the first pipeline 2;
the extraction fluid system includes: the extraction liquid pipeline 4 is connected with a filter system 6, a flow control valve lower line is arranged near the outlet of the extraction liquid pipeline 4 and is connected with the inlet end of the first pipeline 2, and the outlet end of the first pipeline 2 is connected with the stripping line 1;
the filter 6 system comprises: the first filter, the second filter, the first filter front-rear valve and the second filter front-rear valve are connected on the extraction liquid pipeline 4 in a parallel mode;
the first filter and the second filter are mutually standby;
the extraction liquid pipeline 4 above the filter system 6 is also provided with a flow transmission instrument 7 and a temperature indication instrument 8, so that the flow and the temperature reading of the extraction liquid passing through the extraction pipeline are convenient;
the first pipeline 2 adopts DN200,2TB pipeline.
The raffinate system comprises: a raffinate pipeline 9, wherein the raffinate pipeline 9 is connected with a filter system 6, a pressure control valve lower line is arranged near the outlet of the raffinate pipeline 9, the pressure control valve lower line is connected with the inlet end of a second pipeline 3, the outlet end of the second pipeline 3 is connected with a first pipeline 2, and the second pipeline 3 is connected with a stripping pipeline 1 in an indirect mode;
the filtration system 6 of the raffinate system comprises: the front end and the rear end of the filter are respectively provided with a valve;
the raffinate pipeline 9 above the filter system 6 is also provided with a flow transmission instrument 7 and a temperature indication instrument 8, so that the flow and temperature readings of the raffinate when passing through the raffinate pipeline are convenient;
the second pipeline 3 adopts DN350 and 2TB pipelines;
a total gate valve 10 of a stripping line is arranged below the intersection point of the pipeline connected with the extraction liquid pipeline 4 and the raffinate pipeline 9 and the stripping line 1, a three-way valve is arranged on the stripping line 1 at the rear end of the total gate valve 10, and the first pipeline 2 is connected through the three-way valve.
By adopting the improved stripping line structure and the filter flow, the leaked adsorbent can be filtered, and the specific operation flow is as follows:
the extraction liquid enters through the extraction liquid pipeline 4, is filtered in a filter system 6 of the extraction liquid pipeline 4, and enters into the stripping line 1 through the first pipeline 2 for stripping after being filtered; the raffinate enters through the raffinate line 9, is filtered in the filter system 6 of the raffinate line 9, enters the first line 2 through the second line 3 after being filtered, and enters the stripping line 1 from the first line 2 for stripping; the above process filters the leaked adsorbent after filtering in the filter by the draw-off system and the raffinate system, thereby avoiding the adsorbent being brought into the compressor during stripping.
After the invention is modified, the flow of the filter is added to the stripping line, so that the leakage agent of 9 layers of the adsorption tower can be filtered, and the stripping is ensured to be carried out smoothly.
Claims (8)
1. Improved structure of adsorption tower stripping of bed leakage agent, its characterized in that includes: a raffinate system, and a stripping line; the extraction liquid system and the raffinate system are connected through pipelines and are commonly connected to a stripping line, and the stripping line is connected to a compressor; the outlet lower line of the raffinate system is connected to the first pipeline through a second pipeline and is connected with the stripping line through the first pipeline; the extraction liquid system comprises: the extraction liquid pipeline is connected with a filter system, a flow control valve lower line is arranged near the outlet of the extraction liquid pipeline and is connected with the inlet end of a first pipeline, and the outlet end of the first pipeline is connected with the stripping pipeline; the raffinate system comprises: the device comprises a raffinate pipeline, wherein a filter system is connected to the raffinate pipeline, a pressure control valve lower line is arranged near an outlet of the raffinate pipeline, the pressure control valve lower line is connected with an inlet end of a second pipeline, an outlet end of the second pipeline is connected with a first pipeline, and the second pipeline is connected with a stripping line in an indirect mode.
2. The improved structure of bed leakage agent for stripping in an adsorption tower according to claim 1, wherein: the filter system includes: the device comprises a first filter, a second filter, a first filter front-rear valve and a second filter front-rear valve, wherein the first filter and the second filter are connected to an extraction liquid pipeline in a parallel mode.
3. The improved structure of the bed leakage agent adsorption tower stripping, according to claim 2, characterized in that: the first filter and the second filter are standby.
4. The improved structure of the bed leakage agent adsorption tower stripping, according to claim 2, characterized in that: the extraction liquid pipeline above the filter system is also provided with a flow transmission instrument and a temperature indicating instrument.
5. The improved structure of bed leakage agent for stripping in an adsorption tower according to claim 1, wherein: the first pipeline adopts DN200,2TB pipeline.
6. The improved structure of bed leakage agent for stripping in an adsorption tower according to claim 1, wherein: the filtration system of the raffinate system comprises: the front end and the rear end of the filter are respectively provided with a valve.
7. The improved structure of bed leakage agent for stripping in an adsorption tower according to claim 1, wherein: the second pipeline adopts DN350,2TB pipeline.
8. The improved structure of bed leakage agent for stripping in an adsorption tower according to claim 1, wherein: a stripping line total gate valve is arranged below the position of the intersection point of the pipeline connected with the extraction liquid pipeline and the raffinate pipeline and the stripping line, a three-way valve is arranged on the stripping line at the rear end of the total gate valve, and the three-way valve is connected with the first pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011574764.3A CN112546675B (en) | 2020-12-28 | 2020-12-28 | Improved structure of adsorption tower stripping of bed leakage agent |
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|---|---|---|---|
| CN202011574764.3A CN112546675B (en) | 2020-12-28 | 2020-12-28 | Improved structure of adsorption tower stripping of bed leakage agent |
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| Publication Number | Publication Date |
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| CN112546675A CN112546675A (en) | 2021-03-26 |
| CN112546675B true CN112546675B (en) | 2023-10-13 |
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| CN202011574764.3A Active CN112546675B (en) | 2020-12-28 | 2020-12-28 | Improved structure of adsorption tower stripping of bed leakage agent |
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Citations (26)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB353079A (en) * | 1929-05-02 | 1931-07-23 | Standard Oil Dev Co | Improvements in or relating to the absorption of gas and/or vapour in oil |
| GB682394A (en) * | 1948-09-25 | 1952-11-12 | Foster Wheeler Ltd | Improvements in and relating to methods of and apparatus for stripping volatile substances from fluids |
| JPH06182107A (en) * | 1992-12-24 | 1994-07-05 | Kubota Corp | Apparatus for adsorption and reaction |
| JPH07136445A (en) * | 1993-11-18 | 1995-05-30 | Sumitomo Heavy Ind Ltd | Desulfurization-denitration column |
| JPH10332659A (en) * | 1997-06-02 | 1998-12-18 | Uop Inc | Apparatus and process for adsorption and separation of pseudo moving bed |
| CN1205983A (en) * | 1997-07-22 | 1999-01-27 | 中国石油化工总公司 | Multisection stripping process for treating acid sewage from oil refinery |
| CN102220155A (en) * | 2010-04-15 | 2011-10-19 | 中国石油化工股份有限公司 | Method for utilizing aldehyde-contained water of furfural extraction solvent recovery system |
| WO2012135111A2 (en) * | 2011-03-31 | 2012-10-04 | Uop Llc | Aromatics recovery by extractive distillation |
| TW201330917A (en) * | 2011-11-17 | 2013-08-01 | Alstom Technology Ltd | Low pressure stripping in a gas purification process and systems thereof |
| JP2013202516A (en) * | 2012-03-28 | 2013-10-07 | Mitsubishi Chemical Engineering Corp | Adsorption tower and treatment method using adsorption tower |
| 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 |
| CN105521623A (en) * | 2014-10-24 | 2016-04-27 | 中国石化扬子石油化工有限公司 | Adsorption tower bed pipe volume-reduction simulated moving bed adsorption separation device |
| KR20160046591A (en) * | 2014-10-21 | 2016-04-29 | 현대중공업 주식회사 | Multi section type-LNG Feed gas pre-processing apparatus |
| CN107029451A (en) * | 2016-12-09 | 2017-08-11 | 大连福佳·大化石油化工有限公司 | The leakage adsorbent online recycling device and its technique of adsorption tower bottom (head) |
| CN207123381U (en) * | 2017-04-25 | 2018-03-20 | 中国石油化工股份有限公司 | A kind of adsorption tower grid device for evaluating performance |
| CN107930343A (en) * | 2017-12-30 | 2018-04-20 | 大连福佳·大化石油化工有限公司 | Adsorption tower backwashing system and method |
| CN108102694A (en) * | 2018-01-02 | 2018-06-01 | 神华集团有限责任公司 | The reprocessing system and method for F- T synthesis diesel oil distillate |
| CN207996540U (en) * | 2017-12-30 | 2018-10-23 | 大连福佳·大化石油化工有限公司 | A kind of adsorption tower backwashing system |
| CN110804461A (en) * | 2019-12-18 | 2020-02-18 | 大连福佳·大化石油化工有限公司 | Bed leakage-proof system of adsorption tower |
| CN110835548A (en) * | 2019-12-20 | 2020-02-25 | 大连福佳·大化石油化工有限公司 | Arene adsorption system after transformation |
| CN210145793U (en) * | 2019-05-28 | 2020-03-17 | 山东汇丰石化集团有限公司 | Novel two-section solvent absorption maleic anhydride production device |
| CN210631903U (en) * | 2019-07-11 | 2020-05-29 | 南京赛虎工业设备有限公司 | Pressure swing adsorption air separation nitrogen making device |
| CN210765212U (en) * | 2019-09-23 | 2020-06-16 | 四川正洁科技有限责任公司 | Waste lubricating oil distillate oil refining and regenerating device |
| CN211311384U (en) * | 2019-12-18 | 2020-08-21 | 大连福佳·大化石油化工有限公司 | Bed leakage-proof system of adsorption tower |
| CN111603805A (en) * | 2020-06-01 | 2020-09-01 | 中国石油化工股份有限公司 | Back flushing method of simulated moving bed device for adsorption separation of dimethylbenzene |
| CN214634199U (en) * | 2020-12-28 | 2021-11-09 | 大连福佳·大化石油化工有限公司 | Improved stripping structure of adsorption tower for bed leakage agent |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6468942B1 (en) * | 2000-11-16 | 2002-10-22 | John J. Sansalone | Absorptive-filtration media for the capture of waterborne or airborne constituents |
| US8574425B2 (en) * | 2010-12-14 | 2013-11-05 | Uop Llc | Process for removing heavy polynuclear aromatic compounds from a hydroprocessed stream |
-
2020
- 2020-12-28 CN CN202011574764.3A patent/CN112546675B/en active Active
Patent Citations (26)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB353079A (en) * | 1929-05-02 | 1931-07-23 | Standard Oil Dev Co | Improvements in or relating to the absorption of gas and/or vapour in oil |
| GB682394A (en) * | 1948-09-25 | 1952-11-12 | Foster Wheeler Ltd | Improvements in and relating to methods of and apparatus for stripping volatile substances from fluids |
| JPH06182107A (en) * | 1992-12-24 | 1994-07-05 | Kubota Corp | Apparatus for adsorption and reaction |
| JPH07136445A (en) * | 1993-11-18 | 1995-05-30 | Sumitomo Heavy Ind Ltd | Desulfurization-denitration column |
| JPH10332659A (en) * | 1997-06-02 | 1998-12-18 | Uop Inc | Apparatus and process for adsorption and separation of pseudo moving bed |
| CN1205983A (en) * | 1997-07-22 | 1999-01-27 | 中国石油化工总公司 | Multisection stripping process for treating acid sewage from oil refinery |
| CN102220155A (en) * | 2010-04-15 | 2011-10-19 | 中国石油化工股份有限公司 | Method for utilizing aldehyde-contained water of furfural extraction solvent recovery system |
| WO2012135111A2 (en) * | 2011-03-31 | 2012-10-04 | Uop Llc | Aromatics recovery by extractive distillation |
| TW201330917A (en) * | 2011-11-17 | 2013-08-01 | Alstom Technology Ltd | Low pressure stripping in a gas purification process and systems thereof |
| JP2013202516A (en) * | 2012-03-28 | 2013-10-07 | Mitsubishi Chemical Engineering Corp | Adsorption tower and treatment method using adsorption tower |
| 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 |
| KR20160046591A (en) * | 2014-10-21 | 2016-04-29 | 현대중공업 주식회사 | Multi section type-LNG Feed gas pre-processing apparatus |
| CN105521623A (en) * | 2014-10-24 | 2016-04-27 | 中国石化扬子石油化工有限公司 | Adsorption tower bed pipe volume-reduction simulated moving bed adsorption separation device |
| CN107029451A (en) * | 2016-12-09 | 2017-08-11 | 大连福佳·大化石油化工有限公司 | The leakage adsorbent online recycling device and its technique of adsorption tower bottom (head) |
| CN207123381U (en) * | 2017-04-25 | 2018-03-20 | 中国石油化工股份有限公司 | A kind of adsorption tower grid device for evaluating performance |
| CN107930343A (en) * | 2017-12-30 | 2018-04-20 | 大连福佳·大化石油化工有限公司 | Adsorption tower backwashing system and method |
| CN207996540U (en) * | 2017-12-30 | 2018-10-23 | 大连福佳·大化石油化工有限公司 | A kind of adsorption tower backwashing system |
| CN108102694A (en) * | 2018-01-02 | 2018-06-01 | 神华集团有限责任公司 | The reprocessing system and method for F- T synthesis diesel oil distillate |
| CN210145793U (en) * | 2019-05-28 | 2020-03-17 | 山东汇丰石化集团有限公司 | Novel two-section solvent absorption maleic anhydride production device |
| CN210631903U (en) * | 2019-07-11 | 2020-05-29 | 南京赛虎工业设备有限公司 | Pressure swing adsorption air separation nitrogen making device |
| CN210765212U (en) * | 2019-09-23 | 2020-06-16 | 四川正洁科技有限责任公司 | Waste lubricating oil distillate oil refining and regenerating device |
| CN110804461A (en) * | 2019-12-18 | 2020-02-18 | 大连福佳·大化石油化工有限公司 | Bed leakage-proof system of adsorption tower |
| CN211311384U (en) * | 2019-12-18 | 2020-08-21 | 大连福佳·大化石油化工有限公司 | Bed leakage-proof system of adsorption tower |
| CN110835548A (en) * | 2019-12-20 | 2020-02-25 | 大连福佳·大化石油化工有限公司 | Arene adsorption system after transformation |
| CN111603805A (en) * | 2020-06-01 | 2020-09-01 | 中国石油化工股份有限公司 | Back flushing method of simulated moving bed device for adsorption separation of dimethylbenzene |
| CN214634199U (en) * | 2020-12-28 | 2021-11-09 | 大连福佳·大化石油化工有限公司 | Improved stripping structure of adsorption tower for bed leakage agent |
Non-Patent Citations (1)
| Title |
|---|
| 对二甲苯装置开工技术分析;才武英等;《广东化工》;第41卷(第21期);第179-181页 * |
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