CN203807403U - High-efficiency aromatics extraction device - Google Patents
High-efficiency aromatics extraction device Download PDFInfo
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- CN203807403U CN203807403U CN201420260576.7U CN201420260576U CN203807403U CN 203807403 U CN203807403 U CN 203807403U CN 201420260576 U CN201420260576 U CN 201420260576U CN 203807403 U CN203807403 U CN 203807403U
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- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
The utility model relates to a chemical extraction device, in particular to a high-efficiency aromatics extraction device. The high-efficiency aromatics extraction device consists of a feeding tube, an extraction tower and a solvent recycling tower, wherein the extraction tower is provided with the feeding tube and a solvent inlet tube; a pipeline is arranged on the top of the extraction tower and is connected with a bath tower; a pipeline is arranged on the upper portion of the extraction tower and is connected with the solvent recycling tower; a pipeline is arranged on the bottom of the extraction tower and is connected with the upper portion of a stripping tower; a pipeline is arranged on the lower portion of the stripping tower and is connected with the upper portion of an extractive distillation tower; a pipeline is arranged on the bottom of the stripping tower and is connected with the solvent recycling tower; a pipeline is arranged on the top of the extractive distillation tower and is sequentially connected with a separating tower and a bath tower II; and an aromatics outlet tube is arranged on the top of the bath tower II. The high-efficiency aromatics extraction device is simple in structure, low in manufacturing cost, easy to operate and high in aromatics extraction efficiency, and runs stably; energy consumption is reduced; the grade of products is improved; the yield of the product is guaranteed; requirements on production are met; and the economic benefit is improved.
Description
Technical field
This practicality relates to chemical industry extraction plant, relates in particular to a kind of efficient aromatic extraction unit.
Background technology
Aromatics Extractive Project is to take hydrogenated pyrolysis gasoline as raw material, adopts extraction separating method to obtain highly purified BTX aromatics, in raw material, except containing more aromatic hydrocarbons, also has a certain amount of non-aromatics.Because the boiling point of the identical or close aromatic hydrocarbons of carbonatoms and non-aromatics is close, thereby have the phenomenon of azeotropic, therefore existing aromatic extraction unit is difficult to above aromatic hydrocarbons and non-aromatics to separate, let alone obtains highly purified aromatic hydrocarbons.
Utility model content
The utility model is intended to for the deficiency existing in background technology, and a kind of efficient aromatic extraction unit providing.
Efficient aromatic extraction unit of the present utility model, by feed-pipe, extraction tower and solvent recovery tower form, extraction tower described in it is provided with feed-pipe and colvent inlet pipe, top is provided with pipeline and is communicated with water wash column I, top is provided with pipeline and is communicated with solvent recovery tower, bottom is provided with pipeline and is communicated with stripping tower top, stripping tower bottom is provided with pipeline and is communicated with solvent tower top, bottom is provided with pipeline and is communicated with solvent recovery tower, the top of solvent tower and knockout tower, water wash column II is pipeline connection successively, the top of water wash column II is provided with aromatic hydrocarbons outlet pipe, described water wash column I and water wash column II bottom are equipped with pipeline and are communicated with solvent recovery tower, top is equipped with water inlet pipe, stripping tower bottom is provided with vapour pipe entrance.
As of the present utility model preferred, on the bottom pipeline of described stripping tower, solvent recovery tower and solvent tower, be equipped with return line and the pump housing is installed on pipeline.
As of the present utility model preferred, described water wash column I top is provided with the pipe of raffinating oil.
As of the present utility model preferred, on described solvent recovery tower and knockout tower, be equipped with rising pipe
Efficient aromatic extraction unit of the present utility model, simple in structure, cost is relatively low, stable, processing ease, Aromatics Extractive Project efficiency are high, reduce energy consumption, promoted product product top grade, and guaranteed the qualification rate of product, and met the needs of producing, improved economic benefit.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Embodiment
Below in conjunction with 1 pair of efficient aromatic extraction unit of the present utility model of accompanying drawing, be described further.
Efficient aromatic extraction unit of the present utility model, to be formed by feed-pipe 1, extraction tower 2 and solvent recovery tower 3, described extraction tower 2 is provided with feed-pipe 1 and colvent inlet pipe 4, solvent take and add tetramethylene sulfone as example, and top is provided with that pipeline is communicated with water wash column I 5, this pipeline is that non-aromatics is moved pipeline; Top is provided with pipeline and is communicated with solvent recovery tower 3, and this pipeline is solvent operation pipeline; Bottom is provided with pipeline and is communicated with stripping tower 7 tops, and this pipeline is aromatic hydrocarbons and solution mixed running pipeline.Stripping tower 7 bottoms are provided with pipeline and are communicated with solvent tower 8 tops, bottom is provided with pipeline and is communicated with solvent recovery tower 3, extraction tower 2 is separated into aromatic hydrocarbons and non-aromatics by preliminary extracting place of raw material, aromatic hydrocarbons enters in stripping tower 7 from the output of bottom pipeline, non-aromatics enters in solvent recovery tower 3 from the output of top pipeline, solvent tower 8 carries out secondary extracting top and is provided with pipeline and is communicated with knockout tower 9 and water wash column II 10 successively, the top of water wash column II 10 is provided with aromatic hydrocarbons outlet pipe 11, described water wash column I 5 and water wash column II 10 bottoms are equipped with pipeline and are communicated with solvent recovery tower 3, top is equipped with water inlet pipe 12, stripping tower 7 bottoms are provided with vapour pipe entrance 13.On the bottom pipeline of stripping tower 7, solvent recovery tower 3 and solvent tower 8, be equipped with return line 14 and the pump housing 15 is installed on pipeline, being convenient to carry out extracting repeatedly.Described water wash column I 5 tops are provided with the pipe 16 of raffinating oil, and on solvent recovery tower 3 and knockout tower 9, are equipped with rising pipe 17.
Claims (4)
1. efficient aromatic extraction unit, by feed-pipe (1), extraction tower (2) and solvent recovery tower (3) form, it is characterized in that described extraction tower (2) is provided with feed-pipe (1) and colvent inlet pipe (4), top is provided with pipeline and is communicated with water wash column I (5), top is provided with pipeline and is communicated with solvent recovery tower (3), bottom is provided with pipeline and is communicated with stripping tower (7) top, stripping tower (7) bottom is provided with pipeline and is communicated with solvent tower (8) top, bottom is provided with pipeline and is communicated with solvent recovery tower (3), the top of solvent tower (8) and knockout tower (9), water wash column II (10) is pipeline connection successively, the top of water wash column II (10) is provided with aromatic hydrocarbons outlet pipe (11), described water wash column I (5) and water wash column II (10) bottom are equipped with pipeline and are communicated with solvent recovery tower (3), top is equipped with water inlet pipe (12), stripping tower (7) bottom is provided with vapour pipe entrance (13).
2. efficient aromatic extraction unit as claimed in claim 1, is equipped with return line (14) and the pump housing (15) is installed on pipeline on the bottom pipeline of stripping tower (7), solvent recovery tower (3) and solvent tower (8) described in it is characterized in that.
3. efficient aromatic extraction unit as claimed in claim 1 or 2, is characterized in that described water wash column I (5) top is provided with the pipe (16) of raffinating oil.
4. efficient aromatic extraction unit as claimed in claim 1 or 2, is characterized in that being equipped with rising pipe (17) on described solvent recovery tower (3) and knockout tower (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420260576.7U CN203807403U (en) | 2014-05-21 | 2014-05-21 | High-efficiency aromatics extraction device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420260576.7U CN203807403U (en) | 2014-05-21 | 2014-05-21 | High-efficiency aromatics extraction device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203807403U true CN203807403U (en) | 2014-09-03 |
Family
ID=51446187
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420260576.7U Expired - Fee Related CN203807403U (en) | 2014-05-21 | 2014-05-21 | High-efficiency aromatics extraction device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203807403U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104694158A (en) * | 2015-02-03 | 2015-06-10 | 杨志强 | Aromatic hydrocarbon extraction method |
| CN112933658A (en) * | 2021-01-25 | 2021-06-11 | 北方华锦化学工业股份有限公司 | Method and device for reducing solvent in raffinate oil of aromatic extraction device |
-
2014
- 2014-05-21 CN CN201420260576.7U patent/CN203807403U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104694158A (en) * | 2015-02-03 | 2015-06-10 | 杨志强 | Aromatic hydrocarbon extraction method |
| CN112933658A (en) * | 2021-01-25 | 2021-06-11 | 北方华锦化学工业股份有限公司 | Method and device for reducing solvent in raffinate oil of aromatic extraction device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140903 Termination date: 20150521 |
|
| EXPY | Termination of patent right or utility model |