CN207734629U - A kind of next door rectifying column - Google Patents
A kind of next door rectifying column Download PDFInfo
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- CN207734629U CN207734629U CN201721321396.5U CN201721321396U CN207734629U CN 207734629 U CN207734629 U CN 207734629U CN 201721321396 U CN201721321396 U CN 201721321396U CN 207734629 U CN207734629 U CN 207734629U
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Abstract
The utility model discloses a kind of next door rectifying columns, including rectification tower body, further include partition board, and partition board is mounted on inside rectification tower body, and rectification tower body inside division is by partition board：Prefractionation section, public rectifying section, public stripping section and side take-off section；Wherein, prefractionation section has 26~70 blocks of column plates；Public rectifying section has 12~45 blocks of column plates；Public stripping section has 12~45 blocks of column plates；Side take-off section has 26~70 blocks of column plates.The separation method of the utility model next door rectifying column and hydrocarbon mixture has the following advantages that compared with prior art：Reduce operation energy consumption；Single-tower operation replaces double tower operation, reduces equipment investment and manipulation strength；Technological process operation is flexible, and change target product in time can be needed according to market；Separative efficiency is high, products obtained therefrom purity is high.
Description
Technical field
The present invention relates to a kind of next door rectifying columns, belong to the separation field of hydrocarbon mixture.
Background technology
The technique stream that wherein a certain one-component is purified out from three kinds or more multicomponent hydrocarbon mixtures common at present
Journey mostly uses greatly double rectification column lock out operation.For purifying nC12 hydro carbons in nC10~nC13 hydrocarbon mixtures, such as Fig. 1 institutes
Show, nC10~nC13 hydrocarbon mixtures are detached by first rectifying column, and overhead is nC10~nC12 (containing a small amount of nC12)
Hydrocarbon mixture, the bottomsstream are nC12~nC13 (containing a large amount of nC12) hydrocarbon mixture；NC12~nC13 is (containing a large amount of
NC12) hydrocarbon mixture is detached using Second distillation column, and overhead is nC12 hydrocarbon mixtures, and the bottomsstream is
NC12~nC13 (containing a small amount of nC12) hydrocarbon mixture.The technical process of such purification nC12 hydro carbons is operated using double tower, equipment
Larger, operating process complexity is invested, and due to causing energy consumption higher by repeatedly heat exchange in flow.
Invention content
In order to solve existing for hydrocarbon mixture separation in the prior art, equipment investment is big, operating process is complicated, high energy consumption
The defects of, the present invention provides a kind of next door rectifying column.
In order to solve the above technical problems, the technical solution adopted in the present invention is as follows：
A kind of next door rectifying column, including rectification tower body further include partition board, and partition board is mounted on inside rectification tower body, every
Rectification tower body inside division is by plate：Prefractionation section, public rectifying section, public stripping section and side take-off section；Wherein, in advance
Distillation stage has 26~70 blocks of column plates；Public rectifying section has 12~45 blocks of column plates；Public stripping section has 12~45 blocks of column plates；Side line is adopted
Going out section has 26~70 blocks of column plates.
Above-mentioned next door rectifying column obtains the sideline product of high-purity while realizing mixture separation.
Partition board is slab construction, and the length direction of partition board is parallel with the axis of rectification tower body, and partition board side (left side) is right
The region answered is prefractionation section；The corresponding region in the partition board other side (right side) is side take-off section；The upper-side area of partition board is public affairs
It is total to rectifying section, the region immediately below partition board is public stripping section.This structure, which may be implemented in a tower, completes traditional two towers production
The target of nC12, and the next door rectifying column of the application only needs to have a condenser and a reboiler, saves energy consumption and equipment is thrown
The position of money, condenser and reboiler is with reference to existing common rectifying column.
The nouns of locality such as the application top, bottom, upper and lower, left and right, refer both to relative position when device normal use.
According to feed composition difference, feed inlet is equipped between the 14th~52 block of column plate of prefractionation section；The of side take-off section
Side take-off mouth is equipped between 16~50 blocks of column plates.Side take-off mouth produces 98.5%nC12 products.
In order to further increase separative efficiency, in each section (including：Prefractionation section, public rectifying section, public stripping section and
Side take-off section), column plate spacing is 300mm~800mm.
In order to further ensure that separative efficiency and product purity, partition board are located at the centre position inside rectification tower body, every
Plate height and prefractionation section are contour.
In order to further increase separative efficiency and product purity, divider height is 9.36m~67.2m.
In order to further provide for separative efficiency, liquid distributor is equipped at last block column plate of public rectifying section；Rectifying column
The tower tray of body interior is F1 types valve plate, sieve-plate tower, bubble cap plate or high-efficient solid mass transfer tower board (CTST column plates).
Last block column plate of public rectifying section refers to when being just often used, and is located at the column plate of public rectifying section least significant end.The application
It is related to tray location, is the several from the top down number of plates.
Using the method for above-mentioned next door rectifying column separating hydrocarbons mixture, hydrocarbon mixture is >=hydrocarbon mixture of nC8.
Using the method for above-mentioned next door rectifying column separating hydrocarbons mixture, by the hydrocarbon mixture of >=nC8 by prefractionation section
It is fed at 14th~52 block of column plate, the clear segmentation of nC9~nC11 and nC13~nC14, while basis is completed in prefractionation section
The different of each component volatility carry out non-clear segmentation to nC12, are prorated at the top and bottom of partition board；Later, in side line
It produces the side take-off mouth of section or more and public rectifying section is partially completed the clear segmentation of nC9~nC11 and nC12, overhead extraction
The mainly overhead product containing nC9~nC11, the side take-off mouth of the 16th~50 block of column plate of side take-off section produce purity and are
98.5% nC12 sideline products；Position below side take-off mouth and public stripping section complete the clear of nC13~nC14 and nC12
Clear segmentation, bottom of tower produce the product containing nC13~nC14, and side take-off mouth produces the product for the nC12 that purity is 98.5%.
It is preferred that operating pressure is 0~1atm absolute pressures；The reflux ratio of tower top in mass is 2~20；It can further carry in this way
High superpurity.
When the hydrocarbon mixture that hydrocarbon mixture is nC9~nC14：Feed rate is 6~16t/h, each in hydrocarbon mixture
Constituent content is respectively nC9：0.01%~0.1%, nC10：1%~11%, nC11：20%~35%, nC12：35%~
50%, nC13：20.9%, C14：0.1%~1%, the percentage composition is mass percentage.
When the hydro carbons that hydrocarbon mixture is nC10~nC13 mixes：Hydro carbons mixes the 14th~52 block of column plate by prefractionation section
Between enter next door rectifying column, in prefractionation section realize nC11 and nC13 clear segmentation, nC12 carries out non-in prefractionation section
Clear segmentation, reaches the top and bottom of prefractionation section, after prefractionation section, nC10, nC11 and part nC12 are by prefractionation
Section top enters side take-off section, meanwhile, nC13 and part nC12 enter side take-off section, side take-off through prefractionation section bottom
Section side take-off mouth detaches nC10~nC12 mixtures with upper tower segment and public rectifying section, extraction at the top of public rectifying section
Overhead product containing nC10, nC11, side line adopt mouth and produce quality purity up to 98.5% nC12 products；Side take-off section side line
The extraction following tower section of mouth and public stripping section nC12~nC13 are detached, and public stripping section bottom extraction bottom product is high-purity
The nC13 of degree, nC12 equally adopt mouth extraction by side take-off section side line.
The unmentioned technology of the present invention is with reference to the prior art.
The separation method of next door rectifying column and hydrocarbon mixture of the present invention has the following advantages that compared with prior art：Drop
Low operation energy consumption；Single-tower operation replaces double tower operation, reduces equipment investment and manipulation strength；Technological process operation is flexible, can
Change target product in time is needed according to market；Separative efficiency is high, products obtained therefrom purity is high.
Description of the drawings
Fig. 1 is double rectification column separated structure schematic diagram in the prior art；
Fig. 2 is rectifying tower structure schematic diagram in next door of the present invention；
In figure, 1 first rectifying column, 2 First Heat Exchangers, 3 first return tanks, 4 first storage tanks, 5 third heat exchangers, 6 second
Rectifying column, 7 second heat exchangers, 8 second return tanks, 9 second storage tanks, 10 the 4th heat exchangers, 11 third storage tanks, 12 public rectifying
Section, 13 prefractionation sections, 14 side take-off sections, 15 public stripping sections, A：NC10~nC12 (containing a small amount of nC12) hydrocarbon mixture,
B：NC12 hydrocarbon mixtures, C：NC12~nC13 (containing a small amount of nC12) hydrocarbon mixture..
Specific implementation mode
For a better understanding of the present invention, with reference to the embodiment content that the present invention is furture elucidated, but the present invention
Content is not limited solely to the following examples.
A kind of next door rectifying column, including rectification tower body further include partition board, and partition board is mounted on inside rectification tower body, every
Rectification tower body inside division is by plate：Prefractionation section, public rectifying section, public stripping section and side take-off section；Wherein, in advance
Distillation stage has 26~70 blocks of column plates；Public rectifying section has 12~45 blocks of column plates；Public stripping section has 12~45 blocks of column plates；Side line is adopted
Going out section has 26~70 blocks of column plates.
Partition board is slab construction, and the length direction of partition board is parallel with the axis of rectification tower body, the corresponding area in partition board side
Domain is prefractionation section；The corresponding region in the partition board other side is side take-off section；The upper-side area of partition board is public rectifying section, partition board
The region of underface is public stripping section.
Feed inlet is equipped between 14th~52 block of column plate of prefractionation section；It is equipped between 16th~50 block of column plate of side take-off section
Side take-off mouth.
In each section, column plate spacing is 300mm~800mm.
Partition board is located at the centre position inside rectification tower body, and divider height and prefractionation section are contour, and divider height is
9.36m~67.2m.
Liquid distributor is equipped at last block column plate of public rectifying section；Tower tray inside rectification tower body is F1 type float valves
Column plate, sieve-plate tower, bubble cap plate or high-efficient solid mass transfer tower board.
Using the method for above-mentioned next door rectifying column separating hydrocarbons mixture, hydrocarbon mixture is >=hydrocarbon mixture of nC8.
Specific method is：By the hydrocarbon mixture of >=nC8 by the 14th~52 piece of column plate charging of prefractionation section, in prefractionation
Section completes the clear segmentation of nC9~nC11 and nC13~nC14, while according to the different non-to nC12 progress of each component volatility
Clear segmentation, is prorated at the top and bottom of partition board；Later, more than the side take-off mouth of side take-off section and public essence
Evaporate the clear segmentation that section is partially completed nC9~nC11 and nC12, the main overhead product containing nC9~nC11 of overhead extraction, side line
Produce the nC12 sideline products that the side take-off mouth extraction purity of the 16th~50 block of column plate of section is 98.5%；Side take-off mouth with
Lower position and public stripping section complete the clear segmentation of nC13~nC14 and nC12, and bottom of tower produces the product containing nC13~nC14,
Side take-off mouth produces the product for the nC12 that purity is 98.5%.
Operating pressure is 0~1atm absolute pressures；The reflux ratio of tower top in mass is 2~20；
When the hydrocarbon mixture that hydrocarbon mixture is nC9~nC14：Feed rate is 6~16t/h, each in hydrocarbon mixture
Constituent content is respectively nC9：0.01%~0.1%, nC10：1%~11%, nC11：20%~35%, nC12：35%~
50%, nC13：20.9%, C14：0.1%~1%, the percentage composition is mass percentage；
When the hydro carbons that hydrocarbon mixture is nC10~nC13 mixes：Hydro carbons mixes the 14th~52 block of column plate by prefractionation section
Between enter next door rectifying column, in prefractionation section realize nC11 and nC13 clear segmentation, nC12 carries out non-in prefractionation section
Clear segmentation, reaches the top and bottom of prefractionation section, after prefractionation section, nC10, nC11 and part nC12 are by prefractionation
Section top enters side take-off section, meanwhile, nC13 and part nC12 enter side take-off section, side take-off through prefractionation section bottom
Section side take-off mouth detaches nC10~nC12 mixtures with upper tower segment and public rectifying section, extraction at the top of public rectifying section
Overhead product containing nC10, nC11, side line adopt mouth and produce quality purity up to 98.5% nC12 products；Side take-off section side line
The extraction following tower section of mouth and public stripping section nC12~nC13 are detached, and public stripping section bottom extraction bottom product is high-purity
The nC13 of degree, nC12 equally adopt mouth extraction by side take-off section side line.
Embodiment 1
Using next door rectifying column shown in Fig. 2, by hydrocarbon mixture raw material (nC9 0.01%, nC10 7.9%, nC11
31.7%, nC12 38.7%, nC13 20.9%, C14 0.1%) (in terms of mass content) be sent to the inlet amount of 11t/h
In the rectifying column of next door.Next door tower prefractionation section and main column section (side take-off section) respectively contain 40 blocks of column plates；Public rectifying section contains
28 blocks of column plates and public stripping section contain 22 blocks of column plates.Raw material is by the 18th piece of column plate charging of prefractionation section, side take-off position
At the 19th block of column plate of main column section, other two product extraction position is respectively (i.e. tower top) and public at the top of public rectifying section
Altogether stripping section bottom (i.e. tower reactor).Overhead product nC9~nC11 produced quantities are 4.41t/h；NC13~nC14 the extraction of tower reactor product
Amount is 2.37t/h；Side line nC12 produced quantities are 4.22t/h (nC12 purity >=98.5%).Next door rectifying column tower diameter is 3.52m,
Column plate spacing is 400mm, and divider height 15m, tower top mass reflux ratio is 8.5, and operating pressure is 13kP (absolute pressure), charging
Temperature is 124 DEG C.Its energy consumption is 3217.599kW.
Embodiment 2
Using next door rectifying column shown in Fig. 2, by hydrocarbon mixture raw material (nC9 0.1%, nC10 5.9%, nC11
24.4%, nC12 41.9%, nC13 26.6%, nC14 0.1%) (in terms of mass content) sent with the inlet amount of 11t/h
Into polynary next door rectifying column.Next door tower prefractionation section and main column section respectively contain 37 blocks of column plates；Public rectifying section contains 22 pieces of towers
Plate and public stripping section contain 26 blocks of column plates.For raw material by the 18th piece of column plate charging of prefractionation section, side take-off position is located at master
At the 17th block of column plate of tower section, other two product extraction position is respectively (i.e. tower top) and public stripping at the top of public rectifying section
Section bottom (i.e. tower reactor).Overhead product nC9~nC11 produced quantities are 3.41t/h；Tower reactor product nC13~nC14 produced quantities are
2.96t/h；Side line nC12 produced quantities are 4.63t/h (nC12 purity >=98.5%).Next door tower tower diameter 3.78m, column plate spacing are equal
For 500mm, divider height 35m, tower top mass reflux ratio is 6.7, operating pressure 13kP, and feeding temperature is 126 DEG C, energy
Consumption is 2900.995kW.
Embodiment 3
Using next door rectifying column shown in Fig. 2, by hydrocarbon mixture raw material (nC13 24.6%, nC14 47.1%, nC15
22.7%, >=nC16 4.8%) (in terms of mass content) be sent to the inlet amount of 11t/h in polynary next door rectifying column.Next door
Tower prefractionation section and main column section respectively contain 40 blocks of column plates；Public rectifying section contains 25 blocks of column plates and public stripping section contains 20 pieces
Column plate.Raw material is located at by the 20th piece of column plate charging of prefractionation section, side take-off position at the 22nd block of column plate of main column section, remaining two
A product extraction position is respectively (i.e. tower top) and public stripping section bottom (i.e. tower reactor) at the top of public rectifying section.Overhead product
NC13 produced quantities are 2.84t/h；Tower reactor product >=nC15 produced quantities are 2.9t/h；Side line >=nC14 produced quantities are 5.26t/h.Every
Wall tower tower diameter 3.05m, column plate spacing are 700mm, and divider height 65m, tower top mass reflux ratio is 7.3, and operating pressure is
13kP, feeding temperature are 132 DEG C.
Claims (7)
1. a kind of next door rectifying column, including rectification tower body, it is characterised in that：Further include partition board, partition board is mounted on rectifying column sheet
Rectification tower body inside division is by internal portion, partition board：Prefractionation section, public rectifying section, public stripping section and side take-off
Section；Wherein, prefractionation section has 26~70 blocks of column plates；Public rectifying section has 12~45 blocks of column plates；Public stripping section has 12~45 pieces
Column plate；Side take-off section has 26~70 blocks of column plates.
2. next door rectifying column as described in claim 1, it is characterised in that：Partition board is slab construction, the length direction of partition board with
The axis of rectification tower body is parallel, and the corresponding region in partition board side is prefractionation section；The corresponding region in the partition board other side is side line
Produce section；The upper-side area of partition board is public rectifying section, and the region immediately below partition board is public stripping section.
3. next door rectifying column as described in claim 1, it is characterised in that：Between 14th~52 block of column plate of prefractionation section be equipped with into
Material mouth；Side take-off mouth is equipped between 16th~50 block of column plate of side take-off section.
4. next door rectifying column as described in claim 1, it is characterised in that：In each section, column plate spacing is 300mm~800mm.
5. next door rectifying column as described in claim 1, it is characterised in that：Partition board is located at the interposition inside rectification tower body
It sets, divider height and prefractionation section are contour.
6. next door rectifying column as claimed in claim 5, it is characterised in that：Divider height is 9.36m~67.2m.
7. next door rectifying column as described in claim 1, it is characterised in that：Liquid is equipped at last block column plate of public rectifying section
Distributor；Tower tray inside rectification tower body is F1 types valve plate, sieve-plate tower, bubble cap plate or high-efficient solid mass transfer tower board.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201721321396.5U CN207734629U (en) | 2017-10-13 | 2017-10-13 | A kind of next door rectifying column |
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| CN201721321396.5U CN207734629U (en) | 2017-10-13 | 2017-10-13 | A kind of next door rectifying column |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109663375A (en) * | 2017-10-13 | 2019-04-23 | 中国石油化工集团公司 | A kind of separation method of next door rectifying column and hydrocarbon mixture |
| CN109796310A (en) * | 2019-03-26 | 2019-05-24 | 河北工业大学 | A method of initial gross separation being carried out to F- T synthesis water using next door rectifying column |
| CN109824485A (en) * | 2019-04-03 | 2019-05-31 | 衷晟 | A kind of method using next door tower separation 2,6- xylenol |
| CN111100005A (en) * | 2019-12-22 | 2020-05-05 | 天津渤化永利化工股份有限公司 | Process method for separating and refining butyl butyrate by using partition plate tower |
-
2017
- 2017-10-13 CN CN201721321396.5U patent/CN207734629U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109663375A (en) * | 2017-10-13 | 2019-04-23 | 中国石油化工集团公司 | A kind of separation method of next door rectifying column and hydrocarbon mixture |
| CN109796310A (en) * | 2019-03-26 | 2019-05-24 | 河北工业大学 | A method of initial gross separation being carried out to F- T synthesis water using next door rectifying column |
| CN109824485A (en) * | 2019-04-03 | 2019-05-31 | 衷晟 | A kind of method using next door tower separation 2,6- xylenol |
| CN109824485B (en) * | 2019-04-03 | 2023-11-24 | 大连中沐化工有限公司 | Method for separating 2, 6-xylenol by using partition tower |
| CN111100005A (en) * | 2019-12-22 | 2020-05-05 | 天津渤化永利化工股份有限公司 | Process method for separating and refining butyl butyrate by using partition plate tower |
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