CN202400996U - Production device for extracting high-purity thiophene by coked crude benzene - Google Patents
Production device for extracting high-purity thiophene by coked crude benzene Download PDFInfo
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- CN202400996U CN202400996U CN201120573454XU CN201120573454U CN202400996U CN 202400996 U CN202400996 U CN 202400996U CN 201120573454X U CN201120573454X U CN 201120573454XU CN 201120573454 U CN201120573454 U CN 201120573454U CN 202400996 U CN202400996 U CN 202400996U
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Abstract
The utility model discloses a production device for extracting high-purity thiophene by coked crude benzene. The production device comprises a coked crude benzene presorting unit used for removing a heavy component, a front thiophene fraction and methylbenzene in the coked crude benzene to obtain a narrow thiophene fraction, a crude thiophene pre-extracting unit used for removing the benzene in the narrow thiophene fraction to obtain the crude thiophene, and a thiophene refining unit used for refining the crude thiophene, wherein the coked crude benzene presorting unit, the crude thiophene pre-extracting unit and the thiophene refining unit are connected in series in sequence. According to the utility model, the high-purity thiophene can be extracted by the coked crude benzene, and the production device has the advantages of advanced process flow, continuity and stable operation, stable and uniform product quality, no wastes in the whole production process, no environmental problems, and environmental friendliness.
Description
Technical field
The utility model relates to a kind of high purity thiophene production unit, is specifically related to a kind of production equipment that is extracted the high purity thiophene by coking crude benzene.
Background technology
Thiophene is a kind of five member ring heterocyclic compound that contains a sulfur heteroatom, is liquid colourless, that rank smell is arranged.Thiophene is present in the crude benzol cut that coking generates, and is tar impurity, and content is about 0.5%, and is approaching because of the boiling point of thiophene and benzene, is difficult to general fractionating process the two separated.
Thiophene itself is the precious raw material of a kind of ten minutes, and its main application is to make multiple different synthetic drugs, and makes sensitive materials, optical brightener, spices etc.The broad-spectrum antimicrobial class medicine of producing has: Ticarcillin/Clavulanate Acid, protiofate and tioconazole etc., thiophene-based medicine are used to treat having of cardiovascular disorder: azosemide, Etacrynic Acid and heteronium bromide etc.; With thiophene nuclear is the new antitumor drug tail formula thienyl porphyrin of parent, because of to curing oncoma with control hemopathy unique curative effect arranged, got into the Clinical Laboratory stage in the U.S., Spain and China etc.
Thiophene derivant and thiophen polymer also are novel sensitization and superconducting materials, can be used for developing the organic conductive body, preparation smectic liquid crystal compound.In the development of gas-phase growth of carbon fibre, carbon nanotube, behind the interpolation thiophene promotor, can improve transformation efficiency.
The 2-thenoyltrifluoroacetone of being processed by thiophene is the catalyzer of extracting rare-earth metal zirconium, hafnium, can be used for uranium, thorium separates with nuclear reaction products.
The aspect that China's coking industry is different from developed country's petroleum industry is that thiophene content is generally higher in the coking crude benzene of China.Though thiophene does not form azeotrope with benzene, it is very little that boiling point differs, and its existence meeting causes the quality of benzene and has a strong impact on.At present the synthetic level of China benzene requires a ctystallizing point to be not less than 5.5 ℃, is equivalent to that thiophene content is no more than 0.05% in the benzene.Grade oil benzene requires thiophene content to be lower than 3ppm, and purity is higher than 99.9%.Because thiophene content is generally too high in China's coking crude benzene, has limited the application of benzene, be the key that improves the benzene quality so reduce thiophene content.Along with organic synthesis industry to the improving constantly of C6--C7 aromatic hydrocarbons specification of quality, also require more and more lower to the content of thiophene in the benzene.So improve the quality of benzene, the thiophene that reclaims high added value simultaneously becomes the key of China's coking benzene industrial development.According to the average content rough estimate of the domestic coking benzene recovery and thiophene thereof, about 12000 tons of the annual thiophene content of China if all reclaim, can get 12000 tons of thiophene every year, and economic benefit is more than 600,000,000 yuan.
The utility model content
The utility model technical problem to be solved provides a kind of production equipment that is extracted the high purity thiophene by coking crude benzene; It can effectively carry out pre-treatment with coking crude benzene; Further extractive distillation gets thick thiophene; Again with component distillation refining the high purity thiophene, thereby solve the problem of above-mentioned background technology.
For solving the problems of the technologies described above, the technical scheme of the utility model is:
A kind of production equipment that extracts the high purity thiophene by coking crude benzene; Comprise that the coking crude benzene that the heavy constituent, thiophene front-end volatiles and the toluene that are used for coking crude benzene removed and obtained the thiophene narrow fraction presorts the unit; Be used for the benzene of thiophene narrow fraction is removed and obtains the preparatory bill of lading of the thick thiophene unit of thick thiophene, and be used for thick thiophene is carried out purified thiophene refined unit; Said coking crude benzene is presorted unit, thick thiophene preparatory bill of lading unit and thiophene refined unit and is connected in regular turn.
As a kind of improvement, said coking crude benzene is presorted the unit and is comprised the weight-removing column that is used to remove heavy benzol and YLENE heavy constituent that connects in order, is used to remove the lightness-removing column of thiophene front-end volatiles, and the toluene knockout tower that is used to remove toluene.
As a kind of further improvement, said weight-removing column bottom connects the YLENE treating tower.
As a kind of further improvement, said toluene knockout tower bottom connects the toluene treating tower.
As a kind of improvement, the preparatory bill of lading of said thick thiophene unit comprise in order connect to be used to remove be that light distillation tower is taken off in the extraction of main non-aromatic hydrocarbons light constituent with the hexanaphthene, and the extracting and separating distillation tower that is used for separation of benzene and thiophene.
As a kind of improvement, said toluene knockout tower utilizes the outlet pipe at top to connect the inlet pipe that light distillation tower middle part is taken off in said extraction.
As a kind of improvement, said thiophene refined unit comprises in order the thiophene weight-removing column that is used for removing the solvent heavy constituent, the azeotropy rectification column that is used for further removing the thiophene heavy constituent that connect, is used to extract the water extraction tower of entrainer and is used to remove the thiophene micro-moisture to obtain the dehydration tower of thiophene finished product.
As a kind of improvement, the outlet pipe of said extracting and separating distillation tower utilization bottom connects the inlet pipe at said thiophene weight-removing column middle part.
As a kind of improvement; The inlet pipe at said azeotropy rectification column middle part connects the outlet pipe at thiophene weight-removing column top; And the inlet pipe at azeotropy rectification column middle part also connects the entrainer head tank, and promptly said thiophene weight-removing column outlet pipe and entrainer head tank outlet pipe converge to the import of azeotropy rectification column.
As a kind of improvement, said water extraction tower top is provided with the import of thiophene azeotrope and water and entrainer outlet, and the bottom is provided with the import of water extraction agent.
Owing to adopted technique scheme, the beneficial effect of the utility model is:
1. what the utility model provided a kind ofly extracts the production equipment of high purity thiophene by coking crude benzene, comprises that placed in-line in regular turn coking crude benzene presorts unit, thick thiophene preparatory bill of lading unit and thiophene refined unit, and whole plant can realize that coking crude benzene extracts the high purity thiophene; Technical process is advanced; Continuously and operate steadily, the steady quality homogeneous of product does not have generation of waste materials in whole process of production; There is not environmental problem, environmental protection.
2. what the utility model provided a kind ofly extracts the production equipment of high purity thiophene by coking crude benzene, obtains the high purity thiophene through each cell processing respectively with a kind of raw material crude benzol, obtains the low-sulfur benzene,toluene,xylene simultaneously, has strengthened effective utilization of raw material; And the thick thiophene of said thiophene weight-removing column extraction and entrainer directly get into azeotropic distillation column, alleviated environmental pollution, improved work situation.
3. said thiophene refined unit is provided with azeotropic distillation column and adopts Azotropic distillation method purification thiophene to get the thiophene azeotrope, and micro-moisture in water extraction tower and dehydration tower absorption thiophene finally obtains the high-content thiophene then.
Description of drawings
Accompanying drawing is the equipment flowsheet synoptic diagram of the utility model;
Among the figure: 1. weight-removing column, 2. lightness-removing column, 3. toluene knockout tower, 4. light distillation tower, 5. extracting and separating distillation tower are taken off in extraction; 6. thiophene weight-removing column, 7. thick thiophene, 8. entrainer, 9. azeotropy rectification column, 10. water extraction tower; 11. dehydration tower, the heavy constituent of 12. thiophene and solvent, 13. heavy constituent, 14. water extraction agents, 15. water and azeotropic agent composition; 16. the thiophene finished product, 17. YLENE treating towers, 18. entrainer head tanks, 19. toluene treating towers.
Embodiment
For technique means, creation characteristic that the utility model is realized, reach purpose and be easy to understand understanding with effect, below in conjunction with concrete diagram, further set forth the utility model.
Shown in accompanying drawing, a kind ofly extract the production equipment of high purity thiophene by coking crude benzene, comprise that placed in-line in regular turn coking crude benzene presorts unit, thick thiophene preparatory bill of lading unit and thiophene refined unit.
In the present embodiment, said coking crude benzene is presorted the unit and is comprised the weight-removing column 1 that is used to remove heavy benzol and YLENE heavy constituent that connects in order, is used to remove the lightness-removing column 2 of thiophene front-end volatiles; And the toluene knockout tower 3 that is used to remove toluene; Wherein, said weight-removing column 1 bottom connects YLENE treating tower 17, in order to reclaim refining YLENE; Said toluene knockout tower 3 bottoms connect toluene treating tower 19, in order to reclaim refined toluene.
The preparatory bill of lading of said thick thiophene unit comprise in order connect to be used to remove be that light distillation tower 4 is taken off in the extraction of main non-aromatic hydrocarbons light constituent with the hexanaphthene; And the extracting and separating distillation tower 5 that is used for separation of benzene and thiophene; Wherein, said toluene knockout tower 3 utilizes the outlet pipe at top to connect the inlet pipe that light distillation tower 4 middle parts are taken off in said extraction.
Said thiophene refined unit comprises in order the thiophene weight-removing column 6 that is used for removing the solvent heavy constituent, the azeotropy rectification column 9 that is used for further removing the thiophene heavy constituent that connect, is used to extract the water extraction tower 10 of entrainer and is used to remove the dehydration tower 11 of thiophene micro-moisture to obtain the thiophene finished product.Wherein, said extracting and separating distillation tower 5 utilizes the outlet pipe of bottom to connect the inlet pipe at said thiophene weight-removing column 6 middle parts; The inlet pipe at said azeotropy rectification column 9 middle parts connects the outlet pipe at thiophene weight-removing column 6 tops; And the inlet pipe at azeotropy rectification column 9 middle parts also connects entrainer head tank 18, and promptly said thiophene weight-removing column 6 outlet pipes and entrainer head tank 18 outlet pipes converge to the import of azeotropy rectification column 9; Said water extraction tower 10 tops are provided with the import of thiophene azeotrope and water and entrainer outlet, and the bottom is provided with the import of water extraction agent.
The working process of the utility model is following:
(1) coking crude benzene is got into weight-removing column 1, vacuum distillation removes heavy constituent such as heavy benzol and YLENE, and the cat head of weight-removing column 1 takes out and contains the thiophene component, utilizes YLENE treating tower 17 to reclaim YLENE at the bottom of the tower;
What (2) will obtain contains thiophene component (wherein containing front-end volatiles, thiophene, benzene, toluene), gets into lightness-removing column 2, and air distillation removes front-end volatiles, takes out the mixture of thiophene, benzene and toluene at the bottom of the tower;
(3) mixture with the thiophene that obtains, benzene and toluene gets into toluene knockout tower 3, and vacuum distillation separates thiophene, benzene and toluene, and cat head takes out thiophene, benzol mixture, utilizes toluene treating tower 19 to reclaim toluene at the bottom of the tower;
(3) thiophene that obtains, benzol mixture are got into extraction and take off light distillation tower 4, the negative pressure extraction distillation, removing with the hexanaphthene is main non-aromatic hydrocarbons light constituent, takes out the thiophene narrow fraction at the bottom of the tower;
(4) the thiophene narrow fraction that obtains is got into extracting and separating distillation tower 5 again, the negative pressure extraction distillation obtains thiophene, solvent at the bottom of the tower, and cat head obtains the benzene more than 99.95;
(5) thiophene that obtains, solvent are got into thiophene weight-removing column 6, remove heavy constituent such as solvent, cat head takes out thick thiophene 7, removes the heavy constituent 12 of thiophene and solvent at the bottom of the tower;
The thick thiophene 7 that (6) will obtain gets into azeotropy rectification column 9, and simultaneously, entrainer head tank 18 is also carried entrainer 8 to azeotropy rectification column 9, and azeotropy rectification column 9 cats head take out a certain proportion of thiophene and entrainer, remove heavy constituent 13 at the bottom of the tower;
(7) thiophene that obtains and entrainer are got into water extraction tower 10, water extraction agent 14 gets at the bottom of tower, removed overhead water and azeotropic agent composition 15, the high-load thiophene of extraction at the bottom of the tower;
The high-load thiophene that (8) will obtain gets into dehydration tower 11, removes the micro-moisture in the thiophene, extraction thiophene finished product 16 at the bottom of the tower.
The utility model is not limited to above-mentioned embodiment, and all are based on the technical conceive of the utility model, and the structural improvement of having done all falls among the protection domain of the utility model.
Claims (10)
1. production equipment that extracts the high purity thiophene by coking crude benzene; It is characterized in that: comprise that the coking crude benzene that the heavy constituent, thiophene front-end volatiles and the toluene that are used for coking crude benzene removed and obtained the thiophene narrow fraction presorts the unit; Be used for the benzene of thiophene narrow fraction is removed and obtains the preparatory bill of lading of the thick thiophene unit of thick thiophene, and be used for thick thiophene is carried out purified thiophene refined unit; Said coking crude benzene is presorted unit, thick thiophene preparatory bill of lading unit and thiophene refined unit and is connected in regular turn.
2. a kind of production equipment by coking crude benzene extraction high purity thiophene as claimed in claim 1, it is characterized in that: said coking crude benzene is presorted the unit and is comprised weight-removing column, lightness-removing column and the toluene knockout tower that connects in order.
3. a kind of production equipment by coking crude benzene extraction high purity thiophene as claimed in claim 2, it is characterized in that: said weight-removing column bottom connects the YLENE treating tower.
4. a kind of production equipment by coking crude benzene extraction high purity thiophene as claimed in claim 2, it is characterized in that: said toluene knockout tower bottom connects the toluene treating tower.
5. a kind of production equipment by coking crude benzene extraction high purity thiophene as claimed in claim 2, it is characterized in that: the preparatory bill of lading of said thick thiophene unit comprises that light distillation tower, extracting and separating distillation tower are taken off in the extraction of connection in order.
6. a kind of production equipment by coking crude benzene extraction high purity thiophene as claimed in claim 5, it is characterized in that: said toluene knockout tower utilizes the outlet pipe at top to connect the inlet pipe that light distillation tower middle part is taken off in said extraction.
7. a kind of production equipment by coking crude benzene extraction high purity thiophene as claimed in claim 5, it is characterized in that: said thiophene refined unit comprises thiophene weight-removing column, azeotropy rectification column, water extraction tower and the dehydration tower that connects in order.
8. a kind of production equipment by coking crude benzene extraction high purity thiophene as claimed in claim 7 is characterized in that: the outlet pipe of said extracting and separating distillation tower utilization bottom connects the inlet pipe at said thiophene weight-removing column middle part.
9. a kind of production equipment that extracts the high purity thiophene by coking crude benzene as claimed in claim 7; It is characterized in that: the inlet pipe at said azeotropy rectification column middle part connects the outlet pipe at thiophene weight-removing column top, and the inlet pipe at azeotropy rectification column middle part also connects the entrainer head tank.
10. a kind of production equipment by coking crude benzene extraction high purity thiophene as claimed in claim 7 is characterized in that: said water extraction tower top is provided with the import of thiophene azeotrope and water and entrainer outlet, and the bottom is provided with the import of water extraction agent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120573454XU CN202400996U (en) | 2011-12-31 | 2011-12-31 | Production device for extracting high-purity thiophene by coked crude benzene |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120573454XU CN202400996U (en) | 2011-12-31 | 2011-12-31 | Production device for extracting high-purity thiophene by coked crude benzene |
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| CN202400996U true CN202400996U (en) | 2012-08-29 |
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| CN201120573454XU Expired - Lifetime CN202400996U (en) | 2011-12-31 | 2011-12-31 | Production device for extracting high-purity thiophene by coked crude benzene |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103044319A (en) * | 2013-01-25 | 2013-04-17 | 山东元利科技股份有限公司 | Method for extracting 2-picoline and 3-picoline from coking crude benzene |
| CN103044318A (en) * | 2013-01-25 | 2013-04-17 | 山东元利科技股份有限公司 | Method for extracting pyridine from coked crude benzene |
| CN103073533A (en) * | 2013-01-25 | 2013-05-01 | 山东元利科技股份有限公司 | Method for extracting 2-methylthiophene and 3-methylthiophene with coking crude benzol |
| CN103086823A (en) * | 2013-02-07 | 2013-05-08 | 天津大学 | Method and device for separating n-hexane, isohexane and benzene |
| CN114804074A (en) * | 2022-05-13 | 2022-07-29 | 太原理工大学 | Method for preparing carbon nano tube by low-pressure combustion of coking crude benzene |
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2011
- 2011-12-31 CN CN201120573454XU patent/CN202400996U/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103044319A (en) * | 2013-01-25 | 2013-04-17 | 山东元利科技股份有限公司 | Method for extracting 2-picoline and 3-picoline from coking crude benzene |
| CN103044318A (en) * | 2013-01-25 | 2013-04-17 | 山东元利科技股份有限公司 | Method for extracting pyridine from coked crude benzene |
| CN103073533A (en) * | 2013-01-25 | 2013-05-01 | 山东元利科技股份有限公司 | Method for extracting 2-methylthiophene and 3-methylthiophene with coking crude benzol |
| CN103044319B (en) * | 2013-01-25 | 2014-09-24 | 山东元利科技股份有限公司 | Method for extracting 2-picoline and 3-picoline from coking crude benzene |
| CN103073533B (en) * | 2013-01-25 | 2015-08-05 | 山东元利科技股份有限公司 | A kind of method being extracted 2-thiotolene, 3 methyl thiophene by coking crude benzene |
| CN103086823A (en) * | 2013-02-07 | 2013-05-08 | 天津大学 | Method and device for separating n-hexane, isohexane and benzene |
| CN103086823B (en) * | 2013-02-07 | 2015-07-01 | 天津大学 | Method and device for separating n-hexane, isohexane and benzene |
| CN114804074A (en) * | 2022-05-13 | 2022-07-29 | 太原理工大学 | Method for preparing carbon nano tube by low-pressure combustion of coking crude benzene |
| CN114804074B (en) * | 2022-05-13 | 2023-10-20 | 太原理工大学 | Method for firing carbon nano tube by coking crude benzol under low pressure |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: SHANDONG YUANLI SCIENCE AND TECHNOLOGY CO., LTD. Free format text: FORMER NAME: WEIFANG YUANLI CHEMICAL CO., LTD. |
|
| CP03 | Change of name, title or address |
Address after: 262404, Shandong province Weifang County Changle Zhu Liu Street Industrial Park (309 State Road 355 kilometers) Patentee after: Shandong Yuanli Technology Co., Ltd. Address before: 262404 No. 37 Industrial Zone, Zhu Liu street, Changle County, Shandong, Weifang Patentee before: Weifang City Yuanli Chemical Industry Co., Ltd. |
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| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120829 |