CN209338416U - A kind of benzene hydrogenation extracting section refining plant - Google Patents
A kind of benzene hydrogenation extracting section refining plant Download PDFInfo
- Publication number
- CN209338416U CN209338416U CN201821986347.8U CN201821986347U CN209338416U CN 209338416 U CN209338416 U CN 209338416U CN 201821986347 U CN201821986347 U CN 201821986347U CN 209338416 U CN209338416 U CN 209338416U
- Authority
- CN
- China
- Prior art keywords
- aromatics
- tower
- scrubbing tower
- pipeline
- water scrubber
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 title claims abstract description 55
- 238000005984 hydrogenation reaction Methods 0.000 title claims abstract description 15
- 238000007670 refining Methods 0.000 title claims abstract description 9
- 238000005201 scrubbing Methods 0.000 claims abstract description 23
- 239000002904 solvent Substances 0.000 claims abstract description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 16
- 238000000605 extraction Methods 0.000 claims abstract description 15
- 238000011084 recovery Methods 0.000 claims abstract description 13
- 239000003795 chemical substances by application Substances 0.000 claims description 4
- 239000000284 extract Substances 0.000 claims 1
- 238000005406 washing Methods 0.000 abstract description 9
- 150000004945 aromatic hydrocarbons Chemical class 0.000 description 14
- 239000000047 product Substances 0.000 description 13
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 12
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 5
- 238000000926 separation method Methods 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 238000000746 purification Methods 0.000 description 3
- 239000008096 xylene Substances 0.000 description 3
- 150000001555 benzenes Chemical class 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- HXJUTPCZVOIRIF-UHFFFAOYSA-N sulfolane Chemical compound O=S1(=O)CCCC1 HXJUTPCZVOIRIF-UHFFFAOYSA-N 0.000 description 2
- 125000003118 aryl group Chemical group 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000013067 intermediate product Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
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- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
The utility model discloses a kind of benzene hydrogenations to extract section refining plant, belong to benzene hydrogenation equipment, including extraction tower, non-aromatics scrubbing tower, water scrubber and solvent recovery tower, extraction tower is connect by pipeline with non-aromatics scrubbing tower, non-aromatics scrubbing tower is connect by pipeline with water scrubber, non-aromatics wash tower bottoms are connect by pipeline with solvent recovery tower, and circulation has solvent in non-aromatics scrubbing tower.The benzene hydrogenation extracting section refining plant of the utility model is further added by non-aromatics scrubbing tower before product enters water scrubber, by non-aromatics secondary washing, can effectively solve problem above.After secondary washing, the purity of non-aromatics is significantly improved.
Description
Technical field
The utility model relates to benzene hydrogenation equipment, specifically, the utility model relates to a kind of extracting section purifications of benzene hydrogenation
Device.
Background technique
Benzene hydrogenation extracting section uses sulfolane as extractant, and non-aromatics that stripper distills out and aromatic hydrocarbons mixture are from upper
And it is lower into extraction tower, the separation of aromatic hydrocarbons and non-aromatics is realized in extraction tower.Non-aromatics from extraction tower top produce, then from
Lower part enters water scrubber, and after water scrubber is washed, the sulfolane solvent dissolved in non-aromatics is removed, the non-aromatics after washing
It is produced directly as product.But in actual production, the purity of non-aromatics only reaches 60% or so, benzene, toluene and dimethylbenzene etc.
Content of material reaches more than 30%, it is seen that extraction tower is not able to achieve efficiently separating for aromatic hydrocarbons and non-aromatics.Non-aromatic product purity is not high by one
It is directly the shortcoming of Lyondell benzene hydrogenation recovery process.Non-aromatic product purity is low, and product price is lower, moreover, valence
It is worth higher benzene,toluene,xylene to sell as non-aromatic hydrocarbon product, reduces the economic benefit of product.
Summary of the invention
The technical problem to be solved by the utility model is to provide a kind of refining plants for improving non-aromatics purity.
In order to solve the above-mentioned technical problem, the technical scheme adopted by the utility model is a kind of benzene hydrogenation extracting section essence
Device processed, including extraction tower, non-aromatics scrubbing tower, water scrubber and solvent recovery tower, the extraction tower pass through pipeline and non-aromatics
Scrubbing tower connection, non-aromatics scrubbing tower are connect by pipeline with water scrubber, the non-aromatics wash tower bottoms pass through pipeline with it is molten
The connection of agent recovery tower, the interior circulation of non-aromatics scrubbing tower have solvent.
Using the technical solution of the utility model, can obtain it is below the utility model has the advantages that
The benzene hydrogenation extracting section refining plant of the utility model is further added by non-aromatics washing before product enters water scrubber
Non-aromatics secondary washing can effectively be solved problem above by tower.After secondary washing, the purity of non-aromatics is significantly improved.
Detailed description of the invention
Brief description is made to content expressed by each attached drawing of this specification and the label in figure below:
Fig. 1 is the structural schematic diagram of the present apparatus；
Label in above-mentioned figure is equal are as follows: 1, extraction tower；2, non-aromatics scrubbing tower；3, water scrubber；4, solvent recovery tower.
Specific embodiment
Below against attached drawing, by the description of the embodiment, such as related to specific embodiment of the present utility model
The shape of each component, construction, the mutual alignment between each section and connection relationship, the effect of each section and working principle etc. make into
The detailed description of one step.
As shown in Figure 1, this benzene hydrogenation extracting section refining plant includes extraction tower 1, non-aromatics scrubbing tower 2, water scrubber 3 and molten
Agent recovery tower 4, extraction tower 1 are connect by pipeline with non-aromatics scrubbing tower 2, and non-aromatics scrubbing tower 2 is connected by pipeline and water scrubber 3
It connects, 2 bottom of non-aromatics scrubbing tower is connect by pipeline with solvent recovery tower 4, and circulation has solvent in non-aromatics scrubbing tower 2.
The present apparatus can by non-aromatic product secondary purification, the non-aromatic hydrocarbon product after purification enter water scrubber 3 wash after, as
Product extraction.Using circulation lean solvent as cleaning solution, the solvent after washing containing aromatic hydrocarbons enters molten newly-increased non-aromatics scrubbing tower 2
Agent recovery tower 4, realizes the separation of aromatic hydrocarbons and solvent, and benzene,toluene,xylene being washed out etc. is produced as intermediate products.It should
After scheme is implemented, the purity of aromatic hydrocarbons is improved, the rate of recovery of benzene,toluene,xylene product is increased, improving by a relatively large margin
The economic benefit of benzene hydrogenation.
Aromatic hydrocarbons and the mixture of non-aromatics enter aromatic hydrocarbons scrubbing tower 2 for non-aromatics and solvent point after extracting out from extraction tower 1
It separates out and, solvent recycles in non-aromatics scrubbing tower 2, enters solvent recovery tower 4 after aromatic hydrocarbons and solvent separation, then returns solvent
The aromatic hydrocarbons and solvent separation, non-aromatics received in tower 4 enter the non-aromatic hydrocarbon product of output after water scrubber 3.
This benzene hydrogenation extracting section refining plant is further added by non-aromatics scrubbing tower 2 before product enters water scrubber 3, will be non-aromatic
Hydrocarbon secondary washing can effectively solve problem above.After secondary washing, the purity of non-aromatics is significantly improved.
The utility model is exemplarily described above in conjunction with attached drawing, it is clear that the utility model specific implementation not by
The limitation of aforesaid way, as long as the various unsubstantialities carried out using the method concept and technical solution of the utility model change
Into, or it is not improved the conception and technical scheme of the utility model are directly applied into other occasions, in the utility model
Protection scope within.
Claims (1)
1. a kind of benzene hydrogenation extracts section refining plant, it is characterised in that: including extraction tower, non-aromatics scrubbing tower, water scrubber and molten
Agent recovery tower, the extraction tower are connect by pipeline with non-aromatics scrubbing tower, and non-aromatics scrubbing tower is connected by pipeline and water scrubber
It connects, the non-aromatics wash tower bottoms are connect by pipeline with solvent recovery tower, and circulation has solvent in non-aromatics scrubbing tower.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821986347.8U CN209338416U (en) | 2018-11-29 | 2018-11-29 | A kind of benzene hydrogenation extracting section refining plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821986347.8U CN209338416U (en) | 2018-11-29 | 2018-11-29 | A kind of benzene hydrogenation extracting section refining plant |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209338416U true CN209338416U (en) | 2019-09-03 |
Family
ID=67749937
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821986347.8U Expired - Fee Related CN209338416U (en) | 2018-11-29 | 2018-11-29 | A kind of benzene hydrogenation extracting section refining plant |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209338416U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112920162A (en) * | 2021-01-29 | 2021-06-08 | 临涣焦化股份有限公司 | Solvent regenerating unit |
-
2018
- 2018-11-29 CN CN201821986347.8U patent/CN209338416U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112920162A (en) * | 2021-01-29 | 2021-06-08 | 临涣焦化股份有限公司 | Solvent regenerating unit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190903 |