CN110354522A - A kind of partitioned column gas distribution control method and control system - Google Patents
A kind of partitioned column gas distribution control method and control system Download PDFInfo
- Publication number
- CN110354522A CN110354522A CN201810312268.7A CN201810312268A CN110354522A CN 110354522 A CN110354522 A CN 110354522A CN 201810312268 A CN201810312268 A CN 201810312268A CN 110354522 A CN110354522 A CN 110354522A
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- Prior art keywords
- weir
- gas
- baffle
- height
- control system
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D3/00—Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping
- B01D3/14—Fractional distillation or use of a fractionation or rectification column
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D3/00—Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping
- B01D3/42—Regulation; Control
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- Chemical Kinetics & Catalysis (AREA)
- Separation By Low-Temperature Treatments (AREA)
Abstract
The present invention, which discloses, provides a kind of partitioned column gas distribution control method, and the weir by each column plate in control pre-separation section and lateral line discharging section is high, to control the height of column plate upper liquid position, to realize the control of partition two sides gas flow distribution.A kind of gas distribution control system for this method is disclosed, and the system comprises electric adjusting device, gas speed measuring device, sensing device and controllers；The signal that gas speed measuring device will test into the gas flow rate of pre-separation section and lateral line discharging section sends controller to by sensing device, controller issues instructions to electric adjusting device, weir height is turned down when the signal measured is lower than setting value, it is high that weir is turned up when the signal measured is higher than setting value, to realize the distribution of partition two sides gas flow.Relative to technology, the present invention has the characteristics that simple and convenient efficient.
Description
Technical field
The present invention relates to partition tower process, and in particular to a kind of partitioned column gas distribution control method and control system.
Background technique
Rectifying is common substance separative unit in Chemical Manufacture, but the thermal efficiency of distillation process is very low, and energy consumption is huge
Greatly, account for about more than half of chemical industry overall process.In general, three components separation needs two rectifying column series connection that can just obtain three kinds
Different pure components.In two tower process, there are air-teturning mixed phenomenons for constituent part, and cause unnecessary energy consumption.Partitioned column because
Have the characteristics that complete thermal coupling, under conditions of reaching identical separation effect, energy consumption can be substantially reduced, while also can be reduced
Equipment investment expense and place occupied area, have been more and more widely used in Chemical Manufacture.
In partition tower process, overhead condenser provides the liquid-phase reflux of entire tower, and tower bottom reboiler provides entire tower
Gas phase reflux controls an important factor for flow distribution of withdrawing fluid and reflux gas in partition two sides is separating effect.Relatively
In the control of fluid flow distribution, the control of gas flow distribution seems relatively difficult.
Chinese patent CN105498268A discloses a kind of partitioned column gas phase flow rate control program, installs in lateral line discharging side
Self-circulating pump system controls liquid flow rate by pump, to realize the control to liquid level on column plate, and then changes gas
Pressure drop when column plate is flowed through, mutually so as to cause the variation of corresponding gas phase flow rate.
Chinese patent CN102872609A discloses a kind of rectifying tower with bulkhead, including liquid middle section reflux distribution system and tower
Bottom uprising gas distributes control system, and gas distribution control system includes computerized control system and is installed on partition bottom two sides
Difference gauge and gas distributor, the gas distributor includes transmission mechanism and blade, and transmission mechanism includes rotation execution machine
Structure, transmission shaft, screw rod, gear, guide link and guide pin drive guide link and guiding by rotation driving mechanism when operation
Piece, guide pin rotate to change the angle of blade and vertical direction with movable vane piece, change the channel cross-section of uprising gas, realize
The distribution of gas flow.
Chinese patent CN106139627A discloses a kind of divider separator, and device is mainly characterized by, and is separating
Board ends install gas distribution plate and its drive shaft, and point of partition two sides liquid phase is controlled by gas distribution plate pivoting
Match.Meanwhile liquid collecting plate is set in lower end demarcation plate two sides, associated logical external downspout is arranged on liquid collecting plate, is used for
Liquid is led back in rectifying column.
Chinese patent CN205145640U discloses a kind of gas distributing device for rectifying tower with bulkhead, including gas point
Orchestration, flow measurement device, gas pre-distributor, controller, rotating device, connecting rod.Rotating device is controlled by controller
It carries out clockwise or counterclockwise, connecting rod and cover board being driven to move left and right, and then changes the gas circulating face of venthole plate
Product, to adjust the gas flow in inlet channel.
In the above existing patented technology, the liquid phase or gas phase regulating system that separately set a set of complexity, such as Chinese patent are required
CN105498268A lateral line discharging side install self-circulating pump system, Chinese patent CN102872609A,
Distribution device in gas-fluid and the setting control gas outside partitioned column is arranged in CN106139627A, CN205145640U in gas passage
The executing agency of distribution apparatus movement.The energy that the liquid phase or gas phase regulating system separately set virtually increases partitioned column operation disappears
Consumption, and increase the complexity and maintenance cost of operation.
Summary of the invention
An object of the present invention is to provide a kind of partitioned column gas distribution control method, passes through control pre-separation section and side
The weir of each column plate is high in line discharging section, to control the height of column plate upper liquid position, to realize partition two sides gas flow distribution
Control.Relative to technology, the present invention has the characteristics that simple and convenient efficient.
The second object of the present invention is to provide a kind of partitioned column gas for aforementioned barriers tower gas distribution control method
Distribute control system.
To reach the first purpose, the technical solution adopted by the present invention is that: a kind of partitioned column gas distribution control method, pre-
Exit weir is set on segregation section and the column plate of lateral line discharging section, by controlling the weir height of exit weir to control the liquid level on each column plate
Highly, to realize the distribution of partition two sides gas flow.
Further, be equipped in the exit weir can oscilaltion baffle, the height adjustment weir for passing through control baffle is high.
When gas passes through column plate with certain flow velocity, liquid liquid level is high, and gas passes through pressure drop when column plate for holding on column plate
It is just big, it is on the contrary then small.The present invention holds liquid on column plate by the way that exit weir is arranged on the column plate of pre-separation section and lateral line discharging section
For height by the control of exit weir, weir height then holds liquid liquid level height, on the contrary then small.Since gas goes out eventually by pre-separation section and side line
Expect that the pressure drop of section will be identical, the air inflow of two sides will change with the variation for holding liquid height on column plate, and liquid height is big when holding
When, by gas flow will reduce, such gas flow rate will reduce, and pressure drop when gas passes through column plate is reduced by；Conversely,
When hold liquid height it is small when, by gas flow just will increase, such gas flow rate will increase, and gas passes through pressure drop when column plate
With regard to increasing.So it is high by the weir of control column plate exit weir, just realize the automatic distribution of partition two sides gas flow.
To reach the second purpose, the technical solution adopted by the present invention is that: a kind of partitioned column gas distribution control system, it is described
System includes electric adjusting device, gas speed measuring device, sensing device and controller, electric adjusting device, gas speed measuring device,
Sensing device is electrically connected with the controller；Electric adjusting device is used to adjust the weir on the column plate of pre-separation section and lateral line discharging section
Height, gas speed measuring device are used to detect the gas flow rate into pre-separation section and lateral line discharging section；The stream that sensing device will measure
Amount signal is sent to controller, and controller issues instructions to electric adjusting device, turns down when the signal measured is lower than setting value
Weir is high, weir height is turned up when the signal measured is higher than setting value, to realize the distribution of partition two sides gas flow.
The air inflow of two sides can be distributed automatically according to preset gas distribution ratio by control system.
Further, the electric adjusting device includes weir plate regulating mechanism and the motor that is connected with weir plate regulating mechanism,
Motor provides power for weir plate regulating mechanism；The oscilaltion in exit weir of weir plate regulating mechanism controllable register.
Further, the weir plate regulating mechanism includes rack pinion pair, and gear set is on motor output shaft, tooth
The lower end of item is fixedly connected with the upper end of baffle, and upper end and the gear of rack gear are connected by meshing transmission；Motor-driven gear rotation, tooth
Wheel belt carry-over bar makes baffle oscilaltion in exit weir.Realize baffle in exit weir by the engaged transmission of rack-and-pinion
Oscilaltion, reliable transmission, structure are simplified.
Further, the weir plate regulating mechanism includes bolt and nut transmission, and the upper end of screw rod and nut screw are driven
Connection, the lower end of screw rod is fixedly connected with the upper end of baffle, and motor driven nut fixes formula rotation, and screw rod drives baffle going out
Oscilaltion in mouth weir.
By the oscilaltion for realizing baffle in exit weir that is threadedly engaged of bolt and nut, reliable transmission, structure is simplified.
Further, the baffle is rectangular plate, the equal length of length and exit weir；The center of the exit weir
Portion is equipped with groove compatible with baffle, and the baffle can be moved freely up and down in a groove.Further, the height of the baffle
It spends identical as the height of groove.
Beneficial effects of the present invention: compared with the existing technology, the present invention only need to by control column plate exit weir height with
Hold liquid height on control column plate, so that it may realize partition two sides gas flow from main regulation, there is simple and convenient efficient spy
Point.The present invention can flexibly control the distribution ratio of partition two sides gas.
Detailed description of the invention
Fig. 1 is partitioned column gas distribution control system schematic diagram of the invention.
Fig. 2 is that the structure of the embodiment one of the electric adjusting device of partitioned column gas distribution control system of the invention is shown
It is intended to.
Fig. 3 is that the structure of the embodiment two of the electric adjusting device of partitioned column gas distribution control system of the invention is shown
It is intended to.
Fig. 4 is that the tray outlet weir of partitioned column gas distribution control system of the invention and the mounting structure of baffle are illustrated
Figure.
Fig. 5 is the structural schematic diagram on Fig. 4 middle outlet weir.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with accompanying drawings and embodiments to this hair
Bright technical solution is clearly and completely described.
The meaning of heretofore described "and/or" refers to that the case where respective individualism or both exists simultaneously wraps
Including including.
The meaning of heretofore described " inside and outside " refers to relative to equipment itself, the side inside sensing equipment
To in, on the contrary is outer.
As shown in Figure 1, a partition 2 is arranged in the center vertical in partitioned column 1, the top of partition is public rectifying section, partition
Lower part be public stripping section, the left side of partition is pre-separation section A, and the right side of partition is lateral line discharging section B.Pre-separation section and side
Line discharging section is mounted on column plate 3, and the outlet of column plate 3 is equipped with exit weir 4, is equipped with the baffle that can freely up and down go up and down in exit weir
5.Tower top dropping liq passes through pre-separation section and lateral line discharging section, bottom rise gas respectively from partition two sides into
The bottom in gas channel 6 enters, and flows out from the top of inlet channel, passes through pre-separation section and lateral line discharging section from bottom to top.
Refering to Fig. 4 and Fig. 5, exit weir 4 is a cuboid, and the center portion thereof is equipped with the rectangle that front and back penetrates through along its length
The shape of groove 41, groove 41 is matched with baffle 5.Baffle 5 is a rectangular plate, can freely up and down be moved in groove 41.
Dropping liq holds the control high by exit weir weir of liquid height on column plate, and it is high that weir height then holds liquid liquid level, it is on the contrary then
It is small.High by the height adjustment weir for adjusting the baffle 5 in exit weir 4, when baffle 5 ramps up, the liquid level on column plate just rises, gas
Body just will increase by the pressure drop of column plate, and gas flow will be reduced；Conversely, gas flow just will increase.To realize partition
The distribution of two sides gas flow.
A kind of partitioned column gas distribution control system, the system comprises electric adjusting device 11, gas speed measuring device 12,
Sensing device 13 and controller 14.Electric adjusting device 11 is high for regulating weir.Gas speed measuring device 12 is set in gas passage 6
For detecting the gas flow rate for entering pre-separation section and lateral line discharging section.The signal measured is passed through sensing by gas speed measuring device 12
Device 13 sends controller 14 to, and controller issues instructions to electric adjusting device 11, when the signal measured is lower than setting value
The weir that electric adjusting device 11 turns down exit weir is high, and the weir that exit weir is turned up when the signal measured is higher than setting value is high, thus
Realize the distribution of partition two sides gas flow.
The embodiment 1 of electric adjusting device 11
Referring to Fig.2, electric adjusting device 11 includes weir plate regulating mechanism 111 and motor 112.Weir plate regulating mechanism 111 wraps
Include gear 1111 and rack gear 1112.Motor 112 is mounted on the outside of partitioned column 1 by electric machine support 1121, motor shaft protrude into every
In plate tower 1, rotary seal between motor shaft and partitioned column, gear 1111 is sleeved on motor output shaft.Rack gear 1112 is along partition
The axis of tower extends, and lower end is fixedly connected with the upper center of baffle 5, and upper end is connected by meshing transmission with gear 1111.Motor
112 driving gears 1111 rotate, and rack gear 1112 drives the oscilaltion in exit weir 4 of baffle 5.
The embodiment 2 of electric adjusting device 11
Refering to Fig. 3, electric adjusting device 11 includes weir plate regulating mechanism 111 and motor 112.Weir plate regulating mechanism 111 wraps
Include screw rod 1114, bevel gear 113 and nut 1113.Nut 1113 is fixed on bracket 1122 by shaft, and the outer rim of nut is set
There is the umbellate form tooth being meshed with bevel gear 113；Take turns screw rod 1114 along partitioned column axis extend, the upper end pass through nut 1113 with
Nut screw transmission connection, lower end is fixedly connected with the upper center of baffle 5.Motor 112 is mounted on by electric machine support 1121
The outside of partitioned column 1, motor shaft protrude into partitioned column 1, rotary seal between motor shaft and partitioned column, motor the tip of the axis suit
There is bevel gear 113, bevel gear 113 is connect with the umbellate form tooth engagement of 1113 outer rim of nut.Motor 112 drives bevel gear 113 to rotate,
Bevel gear 113 drive nut 1113 fix formula rotation, screw rod 1113 drive the oscilaltion in exit weir 4 of baffle 5.
In the embodiment of this control system, exit weir is equipped on every block of column plate, each exit weir is correspondingly provided with a set of
Outlet can also be only arranged in order to simplify design in electric adjusting device on a column plate of pre-separation section A and lateral line discharging section B
Weir and mating electric adjusting device, the liquid level that need to only adjust a column plate equally can achieve effect of the invention.
Not doing the part illustrated in book is the prior art, or has both been able to achieve by the prior art.
Claims (8)
1. a kind of partitioned column gas distributes control method, which is characterized in that set on the column plate of pre-separation section and lateral line discharging section
Exit weir is set, by the weir height of control exit weir to control the liquid level on each column plate, to realize partition two sides gas stream
The distribution of amount.
2. the method as described in claim 1, which is characterized in that in the exit weir be equipped with can oscilaltion baffle, pass through
The height adjustment weir for controlling baffle is high.
3. a kind of control system for control method as claimed in claim 1 or 2, which is characterized in that the system comprises electronic
Regulating device, gas speed measuring device, sensing device and controller, electric adjusting device, gas speed measuring device, sensing device with
Controller electrical connection；Electric adjusting device is used to adjust the weir height on the column plate of pre-separation section and lateral line discharging section, and gas tests the speed
Device is used to detect the gas flow rate into pre-separation section and lateral line discharging section；The flow signal measured is sent to by sensing device
Controller, controller issue instructions to electric adjusting device, weir height are turned down when the signal measured is lower than setting value, when what is measured
Weir height is turned up in signal when being higher than setting value, to realize the distribution of partition two sides gas flow.
4. control system as claimed in claim 3, which is characterized in that the electric adjusting device include weir plate regulating mechanism and
The motor being connected with weir plate regulating mechanism, motor provide power for weir plate regulating mechanism；Weir plate regulating mechanism controllable register is going out
Oscilaltion in mouth weir.
5. control system as claimed in claim 4, which is characterized in that the weir plate regulating mechanism includes rack pinion
Pair, on motor output shaft, the lower end of rack gear is fixedly connected gear set with the upper end of baffle, and the upper end of rack gear is engaged with gear
Transmission connection；Motor-driven gear rotation, gear band carry-over bar make baffle oscilaltion in exit weir.
6. control system as claimed in claim 4, which is characterized in that the weir plate regulating mechanism includes bolt and nut transmission
Pair, the upper end of screw rod and nut screw are sequentially connected, and the lower end of screw rod is fixedly connected with the upper end of baffle, and motor driven nut is done
Stationary rotary, screw rod drive baffle oscilaltion in exit weir.
7. control system as claimed in claim 3, which is characterized in that the baffle is rectangular plate, length and exit weir
Equal length；The central part of the exit weir be equipped with groove compatible with baffle, the baffle can in a groove up and down from
By moving.
8. control system as claimed in claim 7, which is characterized in that the height of the baffle and the height of groove are identical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810312268.7A CN110354522B (en) | 2018-04-09 | 2018-04-09 | Baffle tower gas distribution control method and control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810312268.7A CN110354522B (en) | 2018-04-09 | 2018-04-09 | Baffle tower gas distribution control method and control system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110354522A true CN110354522A (en) | 2019-10-22 |
| CN110354522B CN110354522B (en) | 2021-07-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810312268.7A Active CN110354522B (en) | 2018-04-09 | 2018-04-09 | Baffle tower gas distribution control method and control system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110354522B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112774236A (en) * | 2020-12-10 | 2021-05-11 | 大连理工大学 | Shell-and-tube active gas phase distributor |
| CN114470839A (en) * | 2022-02-15 | 2022-05-13 | 全椒科利德电子材料有限公司 | High-purity propylene electron gas is heat exchange vary voltage rectification equipment with imitating by force |
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| DE3346740A1 (en) * | 1983-12-23 | 1985-06-27 | Krupp Industrietechnik GmbH Werk Buckau Wolf, 4048 Grevenbroich | VIBRATION-FREE REPLACEMENT FLOORS |
| CN2048781U (en) * | 1989-05-02 | 1989-12-06 | 长沙市环保科技开发部 | High-efficient clarifier of waste gas |
| CN102872609A (en) * | 2011-07-11 | 2013-01-16 | 中国石油化工股份有限公司 | Dividing wall rectifying tower |
| CN203620278U (en) * | 2013-12-12 | 2014-06-04 | 河北工业大学 | Gas mixing device applied in partition plate tower |
| CN104548641A (en) * | 2013-10-23 | 2015-04-29 | 中国石油化工股份有限公司 | Partition plate tower |
| CN205145640U (en) * | 2015-10-21 | 2016-04-13 | 中国石油化工股份有限公司 | A gas distributing device for dividing wall rectifying column |
| CN105498268A (en) * | 2016-01-11 | 2016-04-20 | 天津大学 | Partition plate tower gas phase flow control scheme |
-
2018
- 2018-04-09 CN CN201810312268.7A patent/CN110354522B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3346740A1 (en) * | 1983-12-23 | 1985-06-27 | Krupp Industrietechnik GmbH Werk Buckau Wolf, 4048 Grevenbroich | VIBRATION-FREE REPLACEMENT FLOORS |
| CN2048781U (en) * | 1989-05-02 | 1989-12-06 | 长沙市环保科技开发部 | High-efficient clarifier of waste gas |
| CN102872609A (en) * | 2011-07-11 | 2013-01-16 | 中国石油化工股份有限公司 | Dividing wall rectifying tower |
| CN104548641A (en) * | 2013-10-23 | 2015-04-29 | 中国石油化工股份有限公司 | Partition plate tower |
| CN203620278U (en) * | 2013-12-12 | 2014-06-04 | 河北工业大学 | Gas mixing device applied in partition plate tower |
| CN205145640U (en) * | 2015-10-21 | 2016-04-13 | 中国石油化工股份有限公司 | A gas distributing device for dividing wall rectifying column |
| CN105498268A (en) * | 2016-01-11 | 2016-04-20 | 天津大学 | Partition plate tower gas phase flow control scheme |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112774236A (en) * | 2020-12-10 | 2021-05-11 | 大连理工大学 | Shell-and-tube active gas phase distributor |
| CN114470839A (en) * | 2022-02-15 | 2022-05-13 | 全椒科利德电子材料有限公司 | High-purity propylene electron gas is heat exchange vary voltage rectification equipment with imitating by force |
| CN114470839B (en) * | 2022-02-15 | 2022-11-11 | 全椒科利德电子材料有限公司 | High-purity propylene electron gas preparation is with high-efficient heat exchange vary voltage rectification equipment |
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| CN110354522B (en) | 2021-07-23 |
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