CN107837555A - The method of quality control of rectifying tower with bulkhead - Google Patents
The method of quality control of rectifying tower with bulkhead Download PDFInfo
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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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Abstract
The present invention relates to a kind of method of quality control of rectifying tower with bulkhead, mainly solve that conventional rectifying tower with bulkhead operational control is difficult, stability is bad and product quality and the uppity technical problem of yield.The present invention is by using to five control areas of rectifying tower with bulkhead：Feedstock control area, overhead reflux and extraction control area, liquid are collected and distribution control area, side take-off control area and tower reactor produce the technical scheme that temperature, flow and liquid level in control area are controlled and preferably solve above-mentioned technical problem, available in the industrial production of rectifying tower with bulkhead.
Description
Technical field
The present invention relates to a kind of method of quality control of rectifying tower with bulkhead, available in the industrial production of rectifying tower with bulkhead.
Background technology
Rectifying is most ripe, most widely used a kind of isolation technics in petrochemical industry production, but distillation process energy consumption is huge
Greatly, it is estimated that, 40~70% energy consumption is used to separate in chemical process, and energy consumption of rectification accounts for therein 95%.In order to reduce essence
The energy consumption of process is evaporated, researcher both domestic and external conducts extensive research, and rectifying tower with bulkhead is as a kind of typical rectifying section
Energy equipment or process intensification power-saving technology are of great interest.
Rectifying tower with bulkhead is by installing the vertical partition plate of one or more certain length in a rectifying column or band inclines
The dividing plate of rake angle, using a set of vaporization and condensation system, while the product of isolated three kinds or more.Due to only having one
Vaporization and condensation system is covered, and avoids and is remixed using intermediate species during multitower rectifying, therefore bulkhead distillation technology is than passing
The distillation technology investment reduction 20~30% of system, energy consumption reduce by 20~40%.
In fact, most early in nineteen thirty, Eeic W.Luster (US1915681) are just because the separation of cracking gas proposes point
The concept of wall rectifying column, but until 1985 First rectifying tower with bulkhead (BASF) just put into industrial production, so far also only have 200
More rectifying tower with bulkhead are in commercial Application, it is difficult to are widely popularized, basic reason therein is except lacking reliable structure
Design is outer, and it is also the crucial point that can not be ignored that rectifying tower with bulkhead has larger difficulty in operation and control aspect.
By taking the rectifying tower with bulkhead for being most commonly used for three components separation as an example, dividing plate is axially placed along tower, by bulkhead rectifying
Tower is divided into public rectifying section more than dividing plate, the public stripping section below dividing plate, and the bulkhead section where dividing plate, according to charging
With the difference of intermediate species extraction, bulkhead section is divided into feed side and product side again.Therefore, compared with conventional rectification tower, bulkhead essence
Evaporate particularity of the tower due to its structure, the free degree is more, except with conventional rectification tower identical technological parameter, as operating pressure,
Cooling and heating load, reflux ratio, product produced quantity etc., rectifying tower with bulkhead also including sideline product extraction and dividing plate both sides gas phase and
The distribution condition of liquid phase, also, highly coupled between above-mentioned technological parameter, change it is therein any one can be to other specification
Operation brings direct influence, such as the change of overhead reflux liquid measure not only to influence overhead product quality, also directly changes public
Rectifying section bottom distillates the total amount of liquid, in the case of fixed both sides liquid phase distribution ratio, directly affects point of demarcation strip both sides
With liquid measure, and the change of both sides distribution liquid measure, and by the pre-separation effect for directly affecting bulkhead section feeding side and the side of product side
Line product quality；In the case that if in both sides, distribution liquid measure is fixed, then the change of overhead reflux liquid measure will be destroyed directly in tower
Material balance, influence mass transfer, heat transfer and vapor liquid equilibrium process, therefore, in rectifying tower with bulkhead between technological parameter height coupling
And chain reaction can significantly affect product quality and the stable operation control of rectifying tower with bulkhead, and this is also exactly that rectifying tower with bulkhead is difficult
It is the research emphasis and difficult point of rectifying tower with bulkhead development process to realize the immediate cause of stability contorting.
At present, the publication in terms of rectifying tower with bulkhead operation and quality control is less, public in CN102631791A
A kind of control method of rectifying tower with bulkhead is opened, mainly in 3 control methods (Operation of of E.A.Wolff et al.
integrated three-product(Petlyuk)distillation columns,E.A.Wolff,S.Skogestad,
Ind.Eng.Chem.Res.,1995,34(6):2094-2103) on the basis of, a control loop has been increased newly, i.e., in adjusting tower
Push up capacity of returns control tower top product purity, regulation side take-off amount control sideline product purity, regulation tower reactor quantity of steam control tower
On the basis of kettle product purity, add and control feed side top by adjusting the liquid phase distribution ratio of rectifying tower with bulkhead dividing plate both sides
Heavy constituent content in portion's ascending vapor.Although it has all carried out corresponding control, tower top and tower reactor product to product quality
Load do not control, each product yield including sideline product can not ensure, meanwhile, the liquid in multiple regions in tower
Position, such as overhead reflux region, public rectifying section bottom liquid is collected and distribution region, and tower reactor region is not done control and said
It is bright, it is difficult to ensure the material balance and stability contorting of rectifying tower with bulkhead.
Obviously, control method of the prior art can not ensure to ensure product yield while product quality, can not realize
Stable operation, therefore, it is necessary to more efficiently method of quality control is developed, to numerous technological parameters of rectifying tower with bulkhead or operation
Variable is comprehensively controlled, and realizes the stable operation of divided wall column, while ensures the quality and yield of each product.
The content of the invention
To be solved by this invention is that rectifying tower with bulkhead operational control in the prior art is difficult, stability is bad and product matter
Amount and the uppity technical problem of yield.The invention provides a kind of method of quality control of rectifying tower with bulkhead, by dividing
The temperature of different zones, flow and Liquid level in wall rectifying column, comprehensive control of rectifying tower with bulkhead is realized, both ensure that production
Quality, product yield, also achieve stability contorting, available in the industrial production of rectifying tower with bulkhead.
In order to solve the above-mentioned technical problem, the technical solution adopted by the present invention is as follows：Rectifying tower with bulkhead includes 5 control zones
Domain, it is respectively：Feedstock control area, overhead reflux and extraction control area, liquid are collected and distribution control area, side line
Control area is produced, and tower reactor produces control area, the control method of each control area is as follows：
(1) feedstock control area：Feedstock amount is controlled using flow controller；
(2) overhead reflux and extraction control area：Using temperature controller control overhead condenser cold, using flow control
Device processed is controlled overhead product produced quantity, tower top backflow volume is controlled using fluid level controller, controls tower reactor using fluid level controller
Reboiler heat；
(3) control area is collected and distributed to liquid：Using the distribution liquid measure of temperature controller control bulkhead section both sides；
(4) side take-off control area：Sideline product produced quantity is controlled using flow controller；
(5) tower reactor extraction control area：Tower reactor product produced quantity is controlled using fluid level controller.
In above-mentioned technical proposal, what the flow controller in feedstock control area controlled is feedstock amount, according to
The feedstock amount of setting automatically adjusts actual feedstock amount.
In above-mentioned technical proposal, what the temperature controller in overhead reflux and extraction control area controlled is rectifying tower with bulkhead
The temperature of public rectifying section sensitive plate, according to this sensitive plate temperature automatic adjustment overhead condenser cold.Due to temperature and composition
Corresponding relation, realize that public rectifying section corresponds to the temperature control of sensitive plate, Ke Yibao by adjusting overhead condenser cold
Demonstrate,prove the product quality of tower top.Usual public rectifying section sensitive plate is located at the top or middle and upper part of public rectifying section.
In above-mentioned technical proposal, what the flow controller in overhead reflux and extraction control area controlled is that overhead product is adopted
Output, its flow are set according to percentage composition in feed composition of feedstock amount and corresponding light component, root
Actual overhead product produced quantity is automatically adjusted according to the product produced quantity of above-mentioned setting, so as to ensure that the yield of overhead product.
In above-mentioned technical proposal, 2 fluid level controllers, one of liquid level are shared in overhead reflux and extraction control area
What controller controlled is the liquid level of the public rectifying section bottom liquid collecting zone of rectifying tower with bulkhead, and tower is automatically adjusted according to the liquid level
Phegma liquid measure is pushed up, because the liquid distribution of demarcation strip both sides directly affects the separating resulting of rectifying tower with bulkhead, and above-mentioned distribution
Liquid comes from the liquid of the liquid collection regions of public rectifying section bottom again, therefore, carries out Liquid level to the region, helps
In the race material or the overflow of liquid phase that avoid gas phase, while ensure the liquid distribution effects of dividing plate both sides and the stabilization of rectifying tower with bulkhead
Operation；What another fluid level controller controlled is the liquid level of return tank of top of the tower, and tower reactor reboiler heat is automatically adjusted according to the liquid level
Amount, ensure the rising vapor volume of tower reactor.Further, since overhead reflux and extraction have carried out corresponding control, therefore, tower is realized
The stabilization of return tank liquid level is pushed up, is equal to the stable operation for realizing overhead reflux and producing region, while ensure that bulkhead essence
Evaporate the material balance of light component in tower.
In above-mentioned technical proposal, liquid, which is collected and distributed in control area, shares 2 temperature controllers, one of temperature
What controller controlled is the temperature of rectifying tower with bulkhead bulkhead section feeding side sensitive plate, is fed according to this sensitive plate temperature automatic adjustment
The distribution liquid measure of side, because the main function of feed side is the pre-separation of realizing raw material, i.e. part intermediate species enters with light component
Enter public rectifying section, remaining intermediate species enters public stripping section with heavy constituent, therefore, by adjust feed side distribute liquid measure come
Realize the temperature control of bulkhead section feeding side sensitive plate, it is ensured that above-mentioned pre-separation effect, effectively avoid heavy constituent from separation
The top of plate enters public rectifying section, and then enters product side in a manner of liquid phase, influences sideline product quality, usual bulkhead rectifying
Tower feed side sensitive plate is located at the top or middle and upper part of feed side；The control of another temperature controller is rectifying tower with bulkhead bulkhead
The temperature of section product side sensitive plate, according to the distribution liquid measure of this sensitive plate temperature automatic adjustment product side, due to bulkhead section product
The sensitive plate temperature in side directly affects sideline product quality, therefore, carries out temperature control to product side, ensure that sideline product matter
Amount.Usual rectifying tower with bulkhead bulkhead section product side sensitive plate is located at the bottom or middle and lower part of product side.
In above-mentioned technical proposal, what the flow controller in side take-off control area controlled is sideline product produced quantity,
Its flow is according to feedstock amount and corresponds to percentage composition of the intermediate species in feed composition to be set, according to upper
The product produced quantity for stating setting automatically adjusts actual sideline product produced quantity, so as to ensure that the yield of sideline product.
In above-mentioned technical proposal, what the fluid level controller in tower reactor extraction control area controlled is rectifying tower with bulkhead tower reactor
Liquid level, tower reactor product produced quantity is automatically adjusted according to the liquid level.Obviously, tower reactor liquid level is controlled, advantageously ensured that in tower
Rising vapor volume, realize the stable operation of rectifying tower with bulkhead；Meanwhile had to tower top and sideline product produced quantity
On the basis of effect control, the yield of tower reactor product is in turn ensure that, realizes the material balance of whole tower.
Sum it up, the corresponding relation based on temperature in rectifying column with composition, the sensitive plate temperature of public rectifying section are straight
Quality, feed side and the sensitive plate temperature of product side for connecing influence overhead product then directly affect product side roof part decline heavy constituent
Rise the content of heavy constituent with product side bottom, namely directly affect the quality of sideline product, therefore, by controlling suitable spirit
Quick plate temperature can ensure the quality of tower top and sideline product.Realized pair in the present invention by adjusting the cold of overhead condenser
The control of the public sensitive plate temperature of rectifying section, so as to ensure that overhead product quality；Control is collected and distributes by adjusting liquid
The distribution liquid measure of feed side and product side in region, the temperature control to feed side and product side sensitive plate is realized respectively, from
And the control to product side impurity, especially heavy constituent content is realized, it ensure that sideline product quality；Meanwhile in guarantee
On the premise of stating product quality, the present invention is adopted by feedstock control area, overhead reflux and extraction control area and side line
Three flow controllers gone out in control area realize the control to feedstock amount, tower top and sideline product produced quantity respectively
System, so as to ensure that the yield of tower top and sideline product；In addition, stable operation and product produced quantity based on rectifying tower with bulkhead by
The influence of tower inner vapor amount or gas-liquid flow, the present invention is by adjusting the tower reactor produced quantity in tower reactor extraction control area and boiling again
Device heat realizes the control to tower reactor liquid level and overhead condensation tank liquid level respectively, and is controlled by adjusting overhead reflux and extraction
Phegma flow in region processed realizes the Liquid level that control area is collected and distributed to liquid, so as on the one hand ensure that
The material balance of gas-liquid flow and whole tower in tower, now, effective control is realized in tower top and sideline product quality and yield
In the case of system, the product quality and yield of tower reactor are also further guaranteed, and on the other hand then ensure that each area of full tower
The stable operation in domain, realize the stable operation of whole rectifying tower with bulkhead；Therefore, above-mentioned five control areas, i.e. raw material are entered
Expect control area, overhead reflux and extraction control area, liquid collect and distribution control area, side take-off control area and
The control of trip temperature, flow and liquid level is entered in tower reactor extraction control area respectively, can not only ensure tower top, side line and tower reactor product
Quality and yield, moreover it is possible to ensure the stabilization for including the regionals such as tower top, tower reactor, public rectifying section bottom in rectifying tower with bulkhead
Operation, finally realizes the stable operation of whole tower.Therefore, can preferably solve conventional bulkhead essence using technology disclosed by the invention
Evaporate that tower operational control is difficult, stability is bad and product quality and the uppity technical problem of yield.
Brief description of the drawings
Fig. 1 is rectifying tower with bulkhead method of quality control schematic diagram involved in the present invention；
Fig. 2 is the rectifying tower with bulkhead control method schematic diagram described in comparative example 1；
Fig. 3 is the rectifying tower with bulkhead control method schematic diagram described in comparative example 2.
In Fig. 1, C101 is rectifying tower with bulkhead, E101 is overhead condenser, E102 is tower reactor reboiler；TIC is temperature control
Device processed, FIC are flow controller, LIC is fluid level controller；Middle part of the demarcation strip along tower is placed, and rectifying tower with bulkhead is divided into 4
Part, I is public rectifying section, II is public stripping section, III is bulkhead section feeding side, IV is bulkhead section product side；N1 is public
Rectifying section sensitive plate, N2 are bulkhead section feeding side sensitive plate, N3 is bulkhead section product side sensitive plate；Logistics (101) is raw material, thing
Stream (102) is overhead product, logistics (103) is sideline product, logistics (104) is tower reactor product, logistics (105) is overhead reflux
Liquid, logistics (106) are public rectifying section bottom distillate, logistics (107) is the distribution liquid of bulkhead section feeding side, logistics (108)
For the distribution liquid of bulkhead section product side.
In Fig. 1, feedstock region is using flow controller control feedstock valve opening；Overhead reflux and using region
Using public rectifying section sensitive plate N1 temperature control tower top condenser E101 cooling power or cold medium flux, using public essence
Evaporate the Liquid level top reflux flow rate of section bottom liquid collecting region, using flow controller control overhead product extraction regulation
Valve opening, heating power or flow rate of heat medium using return tank of top of the tower Liquid level tower reactor reboiler E102；Liquid is collected and divided
With region using the control valve opening of feed side sensitive plate N2 temperature control feed side distribution liquid, using bulkhead section product side
The control valve opening of sensitive plate N3 temperature control product side distribution liquid；Side take-off region is using flow controller control side
Line product produces control valve opening；Tower reactor extraction region is using tower reactor liquid level control tower kettle product extraction control valve opening.
In Fig. 2, in addition to feed preheater, the equipment and logistics of rectifying tower with bulkhead are consistent with Fig. 1, and its control program is：It is logical
Cross overhead product composition control overhead reflux liquid measure, produced by sideline product composition control sideline product produced quantity, by tower reactor
Product composition control tower reactor reboiler thermic load, and controlled and separated by the heavy constituent content in bulkhead section feeding side roof part gas phase
The ratio of liquid is distributed in plate both sides.
In Fig. 3, the equipment and logistics of rectifying tower with bulkhead are consistent with Fig. 1, and its control program is：Pushed up by bulkhead section product side
Portion's sensitive plate temperature control tower top backflow volume, by overhead condenser Liquid level overhead product produced quantity, pass through public essence
Evaporate a section bottom liquid collecting region Liquid level bulkhead section feeding side distribution liquid measure, the both sides distribution of passing ratio controller control dividing plate
Ratio between liquid measure, by bulkhead section product side bottom sensitive plate temperature control sideline product produced quantity, and pass through tower bottoms
Position control tower reactor product produced quantity.
Below by embodiment, the invention will be further elaborated.
Embodiment
【Embodiment 1】
Using benzene/methylbenzene/mixed xylenes material as raw material, its composition by weight percentage for 12.80% benzene+
The mixed xylenes of 70.69% toluene+16.51%.On the basis of feed rate 80g/min, rectifying tower with bulkhead behaviour as shown in Figure 1
Separated as control method, tower top obtains benzaldehyde product, and side line obtains toluene product, and tower reactor obtains mixed xylenes product.Its
Total number of theoretical plate of middle rectifying tower with bulkhead is 70, the number of theoretical plate of public rectifying section is 15, bulkhead section feeding side and product side
Number of theoretical plate is 35, and from bulkhead section feeding side I, the 23rd piece of theoretical plate entrance of number, toluene produce raw material from bulkhead section from top to bottom
The 17th piece of theoretical plate extraction that product side III is counted from top to bottom, operating pressure are normal pressure, and sensitive plate N1, N2, N3 control temperature are divided
Not Wei 79.7 DEG C, 108.4 DEG C, 110.9 DEG C, tower top, the produced quantity of side line be controlled as 10.2g/min, 56.5g/min, tower
Top drainer, the liquid level of liquid collection region and tower reactor control 50%, 65%, 75% respectively, and control result is as shown in table 1.Can
To find out, the purity of benzene, toluene and mixed xylenes product reaches more than 99.9%, and the yield of benzene and toluene also reaches
More than 99.9%, while the stabilization time of whole tower is shorter, about 3hr, separating effect and stabilization time are significantly better than that comparative example,
Illustrate that method of quality control involved in the present invention realizes the preferable control effect of rectifying tower with bulkhead..
【Embodiment 2】
Using benzene/methylbenzene/mixed xylenes material as raw material, its composition by weight percentage for 33.85% benzene+
The mixed xylenes of 54.61% toluene+11.54%.On the basis of feed rate 80g/min, rectifying tower with bulkhead behaviour as shown in Figure 1
Separated as control method, total number of theoretical plate of wherein rectifying tower with bulkhead is 70, the number of theoretical plate of public rectifying section is 20, point
The number of theoretical plate of wall section feeding side and product side is 30, the 17th piece of theory that raw material counts from top to bottom from bulkhead section feeding side I
The 15th piece of theoretical plate extraction that plate enters, toluene counts from top to bottom from bulkhead section product side III, operating pressure is normal pressure, sensitive
Plate N1, N2, N3 control temperature are respectively 79.9 DEG C, 108.5 DEG C, 111.2 DEG C, tower top, the produced quantity of side line be controlled as
27.1g/min, 43.6g/min, the liquid level of overhead condensation tank, liquid collection region and tower reactor controls 60% respectively, 65%,
75%, control result is as shown in table 1.As can be seen that after the structural parameters of replacing raw material composition and rectifying tower with bulkhead, institute of the present invention
The method of quality control being related to equally has reached preferable control effect.
【Embodiment 3】
Using ethanol/isobutanol/n-amyl alcohol mixed material as raw material, its composition by weight percentage is 12.80% second
The n-amyl alcohol of the isobutanol of alcohol+70.69%+16.51%.On the basis of feed rate 80g/min, rectifying tower with bulkhead as shown in Figure 1
Method of controlling operation thereof is separated, and tower top obtains alcohol product, and side line obtains isobutanol product, and tower reactor obtains n-amyl alcohol product.
For wherein rectifying tower with bulkhead structural parameters with embodiment 1, operating pressure is normal pressure, and sensitive plate N1, N2, N3 control temperature are respectively
77.6 DEG C, 105.7 DEG C, 108.0 DEG C, tower top, the produced quantity of side line be controlled as 10.2g/min, 56.5g/min, tower top is cold
The liquid level of solidifying tank, liquid collection region and tower reactor controls 60%, 60%, 80% respectively, and control result is as shown in table 1.It can see
Go out, after changing separation mixture, method of quality control involved in the present invention still can realize preferable control effect.
The control effect of table 1
【Comparative example 1】
Being formed using rectifying tower with bulkhead same as Example 1 and raw material, control method as shown in Figure 2 is separated,
Control result is shown in Table 2.As can be seen that under the control method, in order to ensure that the product purity of benzene and toluene is not less than
99.9%, the purity and yield of tower reactor mixed xylenes are difficult to ensure that, only 99.78%, while the stabilization time of whole tower is longer,
More than 10hr；If further increasing the thermic load of tower reactor reboiler, the purity of tower reactor mixed xylenes can be improved to 99.9, but this
When public stripping section and dividing plate below pressure difference significantly increase, 3KPa, the stable operation quilt of rectifying tower with bulkhead are risen to by 0.5KPa
Destroy.
【Comparative example 2】
Being formed using rectifying tower with bulkhead same as Example 1 and raw material, control method as shown in Figure 3 is separated,
Control result is shown in Table 2.As can be seen that under the control method, the purity of benzene and toluene product is substantially relatively low, especially benzene,
Reason is, only controls the temperature of product side roof part column plate and the liquid phase distribution of bulkhead section both sides, effectively side line can only be controlled to produce
The content of impurity benzene and dimethylbenzene in product, that is, control the product quality of side line toluene, but can not ensure overhead benzene and tower reactor diformazan
The product quality of benzene；Meanwhile in the control program, because the evaporation capacity in tower or gas-liquid flow are not controlled accordingly, cause
Product yield can not be effectively controlled, and the yield such as tower reactor mixed xylenes is significant lower, while the stabilization of rectifying tower with bulkhead
Time is also relatively long.
The control effect of 2 different control programs of table
| Embodiment 1 | Comparative example 1 | Comparative example 2 | |
| Product quality | |||
| Benzaldehyde product concentration wt% | 99.99 | 99.96 | 99.85 |
| Toluene product design wt% | 99.96 | 99.95 | 99.92 |
| Mixed XYLENE product design wt% | 99.92 | 99.78 | 99.62 |
| Product yield | |||
| Benzaldehyde product yield wt% | 100.00 | 99.97 | 100.00 |
| Toluene product yield wt% | 99.98 | 99.94 | 99.88 |
| Mixed XYLENE benzaldehyde product yield wt% | 99.83 | 99.81 | 99.65 |
| Stable state | |||
| Stabilization time hr | ≈3 | ≥10 | ≥5 |
Claims (8)
1. a kind of method of quality control of rectifying tower with bulkhead, including following five control areas：
(1) feedstock control area：Feedstock amount is controlled using flow controller；
(2) overhead reflux and extraction control area：Using temperature controller control overhead condenser cold, using flow controller
Overhead product produced quantity is controlled, tower top backflow volume is controlled using fluid level controller, is boiled again using fluid level controller control tower reactor
Device heat；
(3) control area is collected and distributed to liquid：Using the distribution liquid measure of temperature controller control bulkhead section both sides；
(4) side take-off control area：Sideline product produced quantity is controlled using flow controller；
(5) tower reactor extraction control area：Tower reactor product produced quantity is controlled using fluid level controller.
2. the method for quality control of rectifying tower with bulkhead according to claim 1, it is characterised in that feedstock control area
In flow controller control be feedstock amount, actual feedstock is automatically adjusted according to the feedstock amount of setting
Amount.
3. the method for quality control of rectifying tower with bulkhead according to claim 1, it is characterised in that overhead reflux and extraction control
What the temperature controller in region processed controlled is the temperature of the public rectifying section sensitive plate of rectifying tower with bulkhead, according to this sensitive plate temperature
Automatically adjust overhead condenser cold.
4. the method for quality control of rectifying tower with bulkhead according to claim 1, it is characterised in that overhead reflux and extraction control
What the flow controller in region processed controlled is overhead product produced quantity, and its flow is according to feedstock amount and corresponding light component
Percentage composition in feed composition automatically adjusts actual tower top come what is set according to the product produced quantity of above-mentioned setting
Product produced quantity.
5. the method for quality control of rectifying tower with bulkhead according to claim 1, it is characterised in that overhead reflux and extraction control
2 fluid level controllers are shared in region processed, one of control is the public rectifying section bottom liquid collecting region of rectifying tower with bulkhead
The liquid level in domain, top reflux flow rate is automatically adjusted according to the liquid level；What another was controlled is the liquid level of return tank of top of the tower, according to
The liquid level automatically adjusts tower reactor reboiler heat.
6. the method for quality control of rectifying tower with bulkhead according to claim 1, it is characterised in that liquid is collected and distribution control
2 temperature controllers are shared in region processed, what one of them was controlled is the temperature of rectifying tower with bulkhead bulkhead section feeding side sensitive plate,
According to the distribution liquid measure of this sensitive plate temperature automatic adjustment feed side；Another control is rectifying tower with bulkhead bulkhead section product side
The temperature of sensitive plate, according to the distribution liquid measure of this sensitive plate temperature automatic adjustment product side.
7. the method for quality control of rectifying tower with bulkhead according to claim 1, it is characterised in that side take-off control area
In flow controller control be sideline product produced quantity, its flow entered according to feedstock amount and corresponding intermediate species
Percentage composition in material composition automatically adjusts actual sideline product come what is set according to the product produced quantity of above-mentioned setting
Produced quantity.
8. the method for quality control of rectifying tower with bulkhead according to claim 1, it is characterised in that tower reactor produces control area
In fluid level controller control be rectifying tower with bulkhead tower reactor liquid level, tower reactor product produced quantity is automatically adjusted according to the liquid level.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110960881A (en) * | 2018-09-28 | 2020-04-07 | 中国石油化工股份有限公司 | Control structure and control method of Kaibel bulkhead rectifying tower |
| CN115531905A (en) * | 2022-06-10 | 2022-12-30 | 宁夏福瑞硅烷材料有限公司 | Novel dynamic control process for dividing wall rectifying tower |
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| CN110960881B (en) * | 2018-09-28 | 2022-09-27 | 中国石油化工股份有限公司 | Control structure and control method of Kaibel bulkhead rectifying tower |
| CN115531905A (en) * | 2022-06-10 | 2022-12-30 | 宁夏福瑞硅烷材料有限公司 | Novel dynamic control process for dividing wall rectifying tower |
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