CN206521436U - A kind of alkylate piece-rate system - Google Patents
A kind of alkylate piece-rate system Download PDFInfo
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- CN206521436U CN206521436U CN201720185416.4U CN201720185416U CN206521436U CN 206521436 U CN206521436 U CN 206521436U CN 201720185416 U CN201720185416 U CN 201720185416U CN 206521436 U CN206521436 U CN 206521436U
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- rectifying column
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- alkylate
- butane
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Abstract
The utility model discloses a kind of alkylate piece-rate system, including rectifying column, vertical baffle is provided with the middle part of rectifying column, rectifying column is divided into the public rectifying section I on top, the public stripping section IV of bottom, the prefractionation section II at middle part and the side take-off section III at middle part；Alkylate feeds tank field and is connected by pipeline with rectifying column prefractionation section II；The top of rectifying column by pipeline successively with condenser, return tank, public rectifying section I connections；Return tank is connected by pipeline with iso-butane tank area；The side take-off section III of rectifying column is connected by pipeline with normal butane tank area；Bottom of the bottom of rectifying column by pipeline all the way successively with reboiler and public stripping section IV is connected, and another road is connected with alkylate oil tank area.The utility model can realize the separation of three kinds of components in a tower, while obtaining the iso-butane and normal butane and high-octane alkylate oil of high-purity.Energy consumption is low, equipment investment is few, simple to operate.
Description
Technical field
The utility model is related to a kind of alkylate piece-rate system.
Background technology
At present, liquid acid Catalytic processes are used domestic alkylate oil production technology, i.e., with low-carbon alkene (including 1- fourths more
Alkene, 2- butylene, isobutene etc.) and iso-butane be raw material, under hydrofluoric acid or sulphuric acid catalysis reaction and depickling after, obtain
In alkylate in addition to containing alkylate oil product, in addition to a large amount of unreacted iso-butanes and normal butane, need to be to alkyl
Change product and carry out de- normal butane and iso-butane processing, iso-butane is recycled as reaction raw materials, to increase the alkane of reaction system
Alkene ratio, while avoiding accumulation of the normal butane in reaction system.
At present, it is use single column side take-off flow if industrial not high to normal butane purity requirement more.If pure to normal butane
Degree requires higher, use cascade towers flow more, and alkylation reaction product enters debutanizing tower, alkyl is obtained by Fractionator Bottom
Carburetion product, the normal butane and the mixture of iso-butane that tower top is isolated, which enter back into butane splitter, to be continued to separate, and tower top is obtained
Iso-butane product is recycled, and bottom of towe obtains high-purity normal butane product.A kind of alkane disclosed in Chinese patent CN205170706U
Base product separator is in order to reduce the energy consumption of cascade towers flow, using debutanizing tower side take-off crude product normal butane, so
Enter the normal butane and iso-butane of the isolated high-purity of butane splitter afterwards, the device reduces debutanizing tower and butane simultaneously
The load of knockout tower, is greatly reduced separation costs, at the same obtain purity more than 97% normal butane and purity be more than 87% it is different
Butane product, and octane number are more than 93 alkylate oil.But there is also equipment cost is high, floor space is big and energy consumption for this method
High the shortcomings of.
Utility model content
The purpose of this utility model is to overcome the deficiencies in the prior art there is provided a kind of alkylate piece-rate system.
The technical solution of the utility model is summarized as follows：
A kind of alkylate piece-rate system, including rectifying column 1, condenser 2, return tank 3 and reboiler 4, in rectifying column 1
Middle part be provided with vertical baffle 5, rectifying column 1 is divided into the public rectifying section I on top, the public stripping of bottom by vertical baffle 5
Section IV, the prefractionation section II at middle part and tetra- parts of side take-off section III at middle part, alkylate charging tank field 6 passes through pipe
Road is connected with the prefractionation of rectifying column 1 section II middle part；The top of rectifying column 1 by pipeline successively with condenser 2, return tank 3,
Public rectifying section I top connection；Return tank 3 is connected by pipeline with iso-butane storage tank 7；The side take-off section III of rectifying column 1
Middle part be connected by pipeline with normal butane storage tank 8；The bottom of rectifying column 1 is by pipeline all the way successively with reboiler and public carrying
Pars infrasegmentalis connection is evaporated, another road is connected with alkylate oil storage tank 9.
System of the present utility model can realize the separation of three kinds of components in a tower, while obtaining the isobutyl of high-purity
Alkane and normal butane and high-octane alkylate oil.It is simple to operate with energy consumption is low, equipment investment is few.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Embodiment
The utility model is further described below in conjunction with the accompanying drawings.
A kind of alkylate piece-rate system (see Fig. 1), including rectifying column 1, condenser 2, return tank 3 and reboiler 4,
The middle part of rectifying column 1 is provided with vertical baffle 5, and rectifying column 1 is divided into the public rectifying section I on top, the public affairs of bottom by vertical baffle 5
Common stripping section IV, the prefractionation section II at middle part and tetra- parts of side take-off section III at middle part, alkylate charging tank field 6
It is connected by pipeline with the prefractionation of rectifying column 1 section II middle part；The top of rectifying column 1 by pipeline successively with condenser 2, backflow
Tank 3, public rectifying section I top connection；Return tank 3 is connected by pipeline with iso-butane storage tank 7；The side take-off of rectifying column 1
Section III middle part is connected by pipeline with normal butane storage tank 8；The bottom of rectifying column 1 by pipeline all the way successively with reboiler and
Public stripping pars infrasegmentalis connection, another road is connected with alkylate oil storage tank 9.
Embodiment 1
A kind of alkylate piece-rate system, rectifying column 1 has 90 layers of tower tray, public rectifying section I and public stripping section IV
Respectively there are 20 layers of tower tray, alkylate charging enters rectifying column prefractionation section II the 40th layer of tower tray, normal butane product is from side
Line extraction section III the 50th layer of tower tray extraction, overhead extraction iso-butane product, tower reactor extraction alkylate oil product is finally recovered
The iso-butane product purity gone out is 92%, and normal butane product purity is 96%, and alkylate oil octane number is up to 95%.
Embodiment 2
A kind of alkylate piece-rate system, rectifying column 1 has 40m fillers, and public rectifying section I and public stripping section IV are each
With 8m fillers, alkylate charging enters rectifying column prefractionation section II medium position, and normal butane product is from side take-off
Section III middle part extraction, overhead extraction iso-butane product, tower reactor extraction alkylate oil product, the iso-butane production being finally recovered out
Product purity is 96%, and normal butane product purity is 98.7%, and alkylate oil octane number is up to 97%.
Claims (1)
1. a kind of alkylate piece-rate system, including rectifying column (1), condenser (2), return tank (3) and reboiler (4), its
It is characterized in that vertical baffle (5) is provided with the middle part of rectifying column (1), rectifying column (1) is divided into the public of top by vertical baffle (5)
Rectifying section (I), the public stripping section (IV) of bottom, the prefractionation section (II) at middle part and the side take-off section (III) four at middle part
Part；Alkylate feeds tank field (6) and is connected by pipeline with the middle part of rectifying column (1) prefractionation section (II)；Rectifying column (1)
Top by pipeline successively with condenser (2), return tank (3), public rectifying section (I) top connection；Return tank (3) passes through
Pipeline is connected with iso-butane tank area (7)；Stored up by pipeline and normal butane at the middle part of the side take-off section (III) of rectifying column (1)
Tank field (8) is connected；Bottom of the bottom of rectifying column (1) by pipeline all the way successively with reboiler (4) and public stripping section (IV)
Connection, another road is connected with alkylate oil tank area (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720185416.4U CN206521436U (en) | 2017-02-28 | 2017-02-28 | A kind of alkylate piece-rate system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720185416.4U CN206521436U (en) | 2017-02-28 | 2017-02-28 | A kind of alkylate piece-rate system |
Publications (1)
| Publication Number | Publication Date |
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| CN206521436U true CN206521436U (en) | 2017-09-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201720185416.4U Active CN206521436U (en) | 2017-02-28 | 2017-02-28 | A kind of alkylate piece-rate system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108467744A (en) * | 2018-03-27 | 2018-08-31 | 天津大学 | A kind of the subtracting five line product method for upgrading of Lube Type decompression partitioned column |
| CN114829550A (en) * | 2019-12-19 | 2022-07-29 | 凯洛格·布朗及鲁特有限公司 | Divided wall column for reactor recycle and product separation in alkylation process |
-
2017
- 2017-02-28 CN CN201720185416.4U patent/CN206521436U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108467744A (en) * | 2018-03-27 | 2018-08-31 | 天津大学 | A kind of the subtracting five line product method for upgrading of Lube Type decompression partitioned column |
| CN108467744B (en) * | 2018-03-27 | 2020-04-24 | 天津大学 | Five-line-reducing product quality improvement method for lubricating oil type pressure-reducing partition plate tower |
| CN114829550A (en) * | 2019-12-19 | 2022-07-29 | 凯洛格·布朗及鲁特有限公司 | Divided wall column for reactor recycle and product separation in alkylation process |
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