CN112495049A - Moisturizing solvent filtering system - Google Patents
Moisturizing solvent filtering system Download PDFInfo
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- CN112495049A CN112495049A CN202011580947.6A CN202011580947A CN112495049A CN 112495049 A CN112495049 A CN 112495049A CN 202011580947 A CN202011580947 A CN 202011580947A CN 112495049 A CN112495049 A CN 112495049A
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- solvent
- pipeline
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- supplementing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D36/00—Filter circuits or combinations of filters with other separating devices
Abstract
The invention belongs to the field of chemical industry, and particularly relates to a moisture supplementing solvent filtering system which comprises a moisture supplementing solvent supplementing pipeline, wherein the moisture supplementing solvent supplementing pipeline is communicated to a solvent circulating system, a crossover pipeline is arranged on the moisture supplementing solvent supplementing pipeline and is communicated with a feeding pipeline of a solvent regeneration tower, and an outlet of the solvent regeneration tower is connected to the solvent circulating system. The invention connects the external moisturizing solvent flow with the solvent regeneration tower flow by adding a new span wire, and filters the materials in the external moisturizing solvent to achieve the purpose of cleaning the external moisturizing solvent.
Description
Technical Field
The invention belongs to the field of chemical industry, and particularly relates to a moisturizing solvent filtering system.
Background
The wet solvent tank has more colloidal substances due to the fact that materials in the underground tank are fed into the wet solvent tank for a long time, the color of the solvent is dirty and is in a soy sauce color, the solvent in the system is cleaned after long-term operation, the color of the solvent is obviously superior to that in the wet solvent tank, the color of the solvent is good and is in a salad oil color, when the solvent in the system is cleaned after maintenance of a machine pump and cleaning of a regeneration tower, the stock of the solvent in the system is gradually reduced, so the stock of the solvent in the system needs to be supplemented by the materials in the wet solvent tank regularly, but the dirty external solvent supplement can influence the performance of the solvent in the system, the yield of mixed aromatics is reduced, and the degradation of the.
Disclosure of Invention
According to the defects in the prior art, the invention aims to provide a moisture-supplementing solvent filtering system, which solves the problem that materials in an external moisture-supplementing solvent tank are dirty, and can filter an extracted moisture-supplementing solvent when a system is used for supplementing a moisture solvent, and the extracted moisture-supplementing solvent enters a device after being filtered, so that the purposes of ensuring the cleanness of the solvent and improving the performance of the solvent are achieved.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows: the moisture supplementing solvent filtering system comprises a moisture supplementing solvent supplementing pipeline, wherein the moisture supplementing solvent supplementing pipeline is communicated to the solvent circulating system, the moisture supplementing solvent supplementing pipeline is provided with a spanning pipeline, the spanning pipeline is communicated with a feeding pipeline of the solvent regeneration tower, and an outlet of the solvent regeneration tower is connected to the solvent circulating system.
Further, an overline gate valve is arranged on the overline pipeline.
Further, the outlet of the solvent regeneration tower sends the cleaning solvent to a recovery tower, and then the cleaning solvent is sent to a solvent circulating system through the recovery tower.
Further, an extraction and solvent supplement feeding battery pack is arranged at the upstream of the moisture supplement solvent supplement pipeline.
Furthermore, the crossing pipeline is connected with a moisture-supplementing solvent feed-in pipeline through a tee joint, a dechlorinated solvent root valve is arranged at the upstream of the tee joint connected to the moisture-supplementing solvent feed-in pipeline, and a moisture-supplementing solvent inlet device gate valve is arranged at the downstream of the tee joint connected to the moisture-supplementing solvent feed-in pipeline.
Furthermore, the moisturizing solvent feeding pipeline is connected to the solvent circulating system through a feeding main pipe, and the feeding main pipe is connected with a monoethanolamine feeding pipeline and a defoamer feeding pipeline.
Furthermore, a feeding adjusting valve is arranged on the feeding pipeline of the solvent regeneration tower, a foam breaking net is arranged in the solvent regeneration tower, and the feeding pipeline of the solvent regeneration tower is connected with a feeding pipeline of a material at the bottom of the extraction and recovery tower.
Furthermore, the moisturizing solvent filtration system also comprises an underground solvent tank, wherein a desolventizing pipeline of the underground solvent tank is connected with the wet solvent tank through a first branch pipeline, and the desolventizing pipeline of the underground solvent tank is connected with a feeding pipeline of the solvent regeneration tower through a second branch pipeline.
Further, the solvent in the wet solvent tank enters the solvent circulating system through the solvent pump and the moisturizing solvent feed line.
Furthermore, a first feeding valve, a feeding one-way valve and a second feeding valve are sequentially arranged on the second branch pipeline along the material flowing direction.
Further, the crossover line is connected to the solvent regenerator feed line by a second branch line, and the crossover line is connected between the first feed valve and the feed check valve.
Further, a non-aromatic shutdown desolvation line and an aromatic mixing shutdown desolvation line are connected to the first branch pipeline.
Further, a third feeding valve and a fourth feeding valve are arranged on the first branch pipeline, a device shutdown desolvation line is connected to a second branch pipeline between the third feeding valve and the fourth feeding valve through a desolvation cooler, and the device shutdown desolvation line is communicated to upstream pipelines of the third feeding valve and the fourth feeding valve through connecting pipelines.
The invention has the beneficial effects that: the process of externally supplementing the wet solvent is connected with the process of the solvent regeneration tower through a newly added span wire, and materials in the externally supplementing wet solvent are filtered, so that the aim of cleaning the externally supplementing wet solvent is fulfilled.
Drawings
FIG. 1 is a process flow diagram of a moisturizing solvent filtration system;
in the figure: 1. a moisturizing solvent feeding pipeline, 2, a feeding main pipe, 3, a crossover pipeline, 4, a feeding pipeline of a solvent regeneration tower, 5, a crossover gate valve, 6, a solvent regeneration tower, 7, an extraction and solvent supplementation feeding boundary area valve bank, 8, a dechlorinated solvent root valve, 9, a moisturizing solvent feeding device gate valve, 10, a supplementing monoethanolamine pipeline, 11, a supplementing defoaming agent pipeline, 12, a feeding adjusting valve, 13, a defoaming net, 14, an extraction and recovery tower bottom material feeding pipeline, 15, an underground solvent tank desolventizing agent pipeline, 16, a first branch pipeline, 17, a second branch pipeline, 18, a first feeding valve, 19, a feeding check valve, 20, a second feeding valve, 21, a non-aromatic shutdown solvent removing line, 22, an aromatic mixing shutdown solvent removing line, 23, a third shutdown feeding valve, 24, a fourth feeding valve, 25 and a device solvent removing line, 26. The system comprises a solvent removing cooler, 27, a connecting pipeline, 28, an underground tank delivery regeneration tower return tank valve, 29, a solvent pump, 30, a wet solvent tank, 31, an extraction tower, 32, a recovery tower, 33, a solvent circulating system feeding pipeline, 34, a feeding heat exchanger, 35, an extraction tower bottom pump, 36, a rich solvent circulating flow path, 37, a recovery tower bottom pump, 38, a reboiler, A and a solvent circulating system.
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 fig. 1, the moisturizing solvent filtration system comprises a moisturizing solvent feed line 1, the moisturizing solvent feed line is communicated to a solvent circulation system, the moisturizing solvent feed line is provided with a crossover line 3, the crossover line 3 is communicated with a solvent regeneration tower feed line 4, and an outlet of a solvent regeneration tower 6 is connected to the solvent circulation system.
Further, an overline gate valve 5 is provided on the overline 3.
Further, the outlet of the solvent regeneration tower 6 sends the cleaning solvent to a recovery tower, and then the cleaning solvent is sent to a solvent circulation system through the recovery tower.
Further, an extraction and solvent supplement feeding battery pack 7 is arranged at the upstream of the moisture supplement solvent supplement pipeline 1.
Furthermore, the crossover pipeline 3 is connected with a moisture-supplementing solvent feed pipeline 1 through a tee joint, a dechlorinated solvent root valve 9 is arranged at the upstream of the tee joint connected to the moisture-supplementing solvent feed pipeline 1, and a moisture-supplementing solvent feeding device gate valve 10 is arranged at the downstream of the tee joint connected to the moisture-supplementing solvent feed pipeline.
Based on the technical scheme, a dechlorinated solvent root valve 9 is a one-way valve, a tee joint is added behind the one-way valve on a moisture supplementing solvent feed line, the original moisture supplementing solvent flow can still be normally used, the tee joint line is connected with a newly-added crossover line 3, the crossover line is connected to an underground solvent tank return solvent regeneration tower flow, the newly-added crossover line is isolated by using a crossover gate valve 5, when the solvent feed is dirty, the original feed flow is closed, the feed solvent is led to a material flow of the underground solvent tank return regeneration tower through the newly-added crossover line 3 and is sent to a solvent regeneration tower 6, macromolecular colloids in the externally-supplemented solvent are removed through stripping steam of the regeneration tower and a foam breaking net 13 in the regeneration tower, and the filtered clean solvent enters a circulating solvent system.
After the implementation, the newly added crossing pipeline 3 is utilized to regenerate the newly supplemented dirty wet solvent by using the solvent regeneration tower, macromolecular colloids carried in the wet solvent are filtered out, and the regenerated solvent enters the circulating solvent system again, so that the aim of ensuring the cleanness of the circulating solvent is fulfilled.
Further, the moisturizing solvent feed line 1 is connected to the solvent circulation system through a feed main pipe 2, and the feed main pipe 2 is connected with a monoethanolamine supplementing line 10 and a defoamer supplementing line 11.
Furthermore, a feeding regulating valve 12 is arranged on the feeding pipeline 4 of the solvent regeneration tower, a foam breaking net 13 is arranged in the solvent regeneration tower, and the feeding pipeline of the solvent regeneration tower is connected with a material feeding pipeline 14 at the bottom of the extraction and recovery tower.
Further, the solvent circulation system comprises an extraction tower 31 and a recovery tower 32, a solvent circulation system feed pipeline 33 enters the extraction tower 31 after heat exchange through a feed heat exchanger 34, an extraction tower bottom outlet enters the recovery tower 32 through an extraction tower bottom pump 35 and a rich solvent circulation flow path 36, and a recovery tower bottom outlet returns to an extraction tower feed inlet through a recovery tower bottom pump 37 and a reboiler 38 and the feed heat exchanger 34.
Furthermore, the moisturizing solvent filtration system further comprises an underground solvent tank, wherein a desolventizing pipeline 15 of the underground solvent tank is connected with the wet solvent tank 30 through a first branch pipeline 16, and the desolventizing pipeline of the underground solvent tank is connected with a feeding pipeline 4 of the solvent regeneration tower through a second branch pipeline 17.
Further, the solvent in the wet solvent tank 30 enters the solvent circulation system through the solvent pump 29 and the wet replenishment solvent feed line 1.
Further, a first feeding valve 18, a feeding check valve 19 and a second feeding valve 20 are sequentially arranged on the second branch pipeline 17 along the material flowing direction.
Further, the crossover line 3 is connected to the solvent regeneration column feed line 4 through a second branch line 17, and the crossover line 3 is connected between a first feed valve 18 and a feed check valve 19.
Further, a non-aromatic shutdown desolvation line 21 and a mixed aromatic shutdown desolvation line 22 are connected to the first branch line 16.
Further, a third feed valve 23 and a fourth feed valve 24 are provided on the first branch line 17, a plant shutdown desolvation line 25 is connected to the second branch line between the third feed valve 23 and the fourth feed valve 24 through a desolvation cooler 26, and the plant shutdown desolvation line 25 is communicated to the upstream lines of the third feed valve and the fourth feed valve through a connecting line 27.
According to the invention, a crossover pipeline is additionally arranged behind a valve bank of a moisturizing solvent boundary area, a crossover gate valve is additionally arranged on the crossover pipeline, the crossover pipeline is connected to an extraction underground tank and a feeding line of an extraction regeneration tower, when a moisturizing solvent is externally replenished, a solvent regeneration feeding process of an original extraction regeneration tower is closed, the moisturizing solvent is adopted as a feeding material of the regeneration tower, the moisturizing solvent is subjected to steam stripping regeneration, a macromolecular colloid in the moisturizing solvent is effectively intercepted through a foam breaking net, and the solvent enters a solvent circulation system after being filtered, so that the aim of ensuring the cleanness of the solvent is achieved.
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. Mend wet solvent filtration system, its characterized in that: the system comprises a moisture supplementing solvent feed pipeline, wherein the moisture supplementing solvent feed pipeline is communicated to a solvent circulating system, the moisture supplementing solvent feed pipeline is provided with a crossover pipeline, the crossover pipeline is communicated with a feeding pipeline of a solvent regeneration tower, and an outlet of the solvent regeneration tower is connected to the solvent circulating system.
2. The rewetting solvent filtration system of claim 1, wherein: and the crossover pipeline is provided with a crossover gate valve.
3. The rewetting solvent filtration system of claim 1, wherein: the crossing pipeline is connected with a moisture-supplementing solvent feed-in pipeline through a tee joint, the upstream of the tee joint connected to the moisture-supplementing solvent feed-in pipeline is provided with a dechlorinated solvent root valve, and the downstream of the tee joint connected to the moisture-supplementing solvent feed-in pipeline is provided with a moisture-supplementing solvent feeding device gate valve.
4. The rewetting solvent filtration system of claim 1, wherein: the wet-supplementing solvent feeding pipeline is connected to the solvent circulating system through a feeding main pipe, and the material main pipe is connected with a monoethanolamine-supplementing pipeline and a defoaming agent-supplementing pipeline.
5. The rewetting solvent filtration system of claim 1, wherein: the feeding pipeline of the solvent regeneration tower is provided with a feeding adjusting valve, the solvent regeneration tower is internally provided with a foam breaking net, and the feeding pipeline of the solvent regeneration tower is connected with a feeding pipeline of a material at the bottom of the extraction and recovery tower.
6. The rewetting solvent filtration system of claim 1, wherein: the wet solvent regeneration tower is characterized by further comprising an underground solvent tank, wherein a solvent removing pipeline of the underground solvent tank is connected with the wet solvent tank through a first branch pipeline, and the solvent removing pipeline of the underground solvent tank is connected with a feeding pipeline of the solvent regeneration tower through a second branch pipeline.
7. The rewetting solvent filtration system of claim 6, wherein: the solvent in the wet solvent tank enters the solvent circulating system through the solvent pump and the moisture supplementing solvent feeding pipeline.
8. The rewetting solvent filtration system of claim 6, wherein: and a first feeding valve, a feeding one-way valve and a second feeding valve are sequentially arranged on the second branch pipeline along the material flowing direction.
9. The rewetting solvent filtration system of claim 8, wherein: the crossover line is connected to the solvent regenerator feed line by a second branch line, and the crossover line is connected between the first feed valve and the feed check valve.
10. The rewetting solvent filtration system of claim 6, wherein: the first branch pipeline is connected with a non-aromatic shutdown desolvation line and an aromatic mixture shutdown desolvation line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011580947.6A CN112495049A (en) | 2020-12-28 | 2020-12-28 | Moisturizing solvent filtering system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011580947.6A CN112495049A (en) | 2020-12-28 | 2020-12-28 | Moisturizing solvent filtering system |
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| Publication Number | Publication Date |
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| CN112495049A true CN112495049A (en) | 2021-03-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011580947.6A Pending CN112495049A (en) | 2020-12-28 | 2020-12-28 | Moisturizing solvent filtering system |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1334427A (en) * | 1971-04-23 | 1973-10-17 | Exxon Research Engineering Co | Low pour dewaxing process utilizing dual solvents |
| US4048062A (en) * | 1976-04-22 | 1977-09-13 | Uop Inc. | Aromatic extraction with solvent recovery and regeneration |
| CN1368974A (en) * | 1999-08-13 | 2002-09-11 | 克鲁普顿公司 | Removal of dissolved silicates from alcohol-silicon direct synthesis solvents |
| CN203033919U (en) * | 2012-12-16 | 2013-07-03 | 山东华懋新材料有限公司 | Tri-reactor condensation device for productions of butadiene rubber or solution polymerized styrene-butadiene rubber |
| CN205152129U (en) * | 2015-10-24 | 2016-04-13 | 大连福佳·大化石油化工有限公司 | Extract solvent recovery system of recycling |
| CN106588541A (en) * | 2016-12-09 | 2017-04-26 | 大连福佳·大化石油化工有限公司 | System for recycling condensate of extraction torch tank |
| CN214634619U (en) * | 2020-12-28 | 2021-11-09 | 大连福佳·大化石油化工有限公司 | Moisturizing solvent filtering system |
-
2020
- 2020-12-28 CN CN202011580947.6A patent/CN112495049A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1334427A (en) * | 1971-04-23 | 1973-10-17 | Exxon Research Engineering Co | Low pour dewaxing process utilizing dual solvents |
| US4048062A (en) * | 1976-04-22 | 1977-09-13 | Uop Inc. | Aromatic extraction with solvent recovery and regeneration |
| CN1368974A (en) * | 1999-08-13 | 2002-09-11 | 克鲁普顿公司 | Removal of dissolved silicates from alcohol-silicon direct synthesis solvents |
| CN203033919U (en) * | 2012-12-16 | 2013-07-03 | 山东华懋新材料有限公司 | Tri-reactor condensation device for productions of butadiene rubber or solution polymerized styrene-butadiene rubber |
| CN205152129U (en) * | 2015-10-24 | 2016-04-13 | 大连福佳·大化石油化工有限公司 | Extract solvent recovery system of recycling |
| CN106588541A (en) * | 2016-12-09 | 2017-04-26 | 大连福佳·大化石油化工有限公司 | System for recycling condensate of extraction torch tank |
| CN214634619U (en) * | 2020-12-28 | 2021-11-09 | 大连福佳·大化石油化工有限公司 | Moisturizing solvent filtering system |
Non-Patent Citations (2)
| Title |
|---|
| 宋彩芬: ""芳烃抽提装置频繁腐蚀原因浅析与对策"", 《石油石化绿色低碳》, pages 36 - 39 * |
| 李成栋: "《催化重整装置操作指南》", 中国石化出版社, pages: 240 * |
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