CN108721934A - Full-process automatic control method and system for rectifying tower - Google Patents
Full-process automatic control method and system for rectifying tower Download PDFInfo
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- CN108721934A CN108721934A CN201810937461.XA CN201810937461A CN108721934A CN 108721934 A CN108721934 A CN 108721934A CN 201810937461 A CN201810937461 A CN 201810937461A CN 108721934 A CN108721934 A CN 108721934A
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- 238000000034 method Methods 0.000 title claims abstract description 103
- 230000001105 regulatory effect Effects 0.000 claims abstract description 97
- 238000010992 reflux Methods 0.000 claims abstract description 53
- 230000008569 process Effects 0.000 claims abstract description 52
- 238000001816 cooling Methods 0.000 claims abstract description 11
- 239000012530 fluid Substances 0.000 claims description 25
- 239000007788 liquid Substances 0.000 claims description 20
- 238000003860 storage Methods 0.000 claims description 6
- 230000001276 controlling effect Effects 0.000 claims description 5
- 239000011344 liquid material Substances 0.000 claims 2
- 238000010438 heat treatment Methods 0.000 abstract description 3
- 230000009194 climbing Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 3
- 230000004069 differentiation Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000003032 molecular docking Methods 0.000 description 2
- 241000208340 Araliaceae Species 0.000 description 1
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 1
- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000004590 computer program Methods 0.000 description 1
- 238000011217 control strategy Methods 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 235000008434 ginseng Nutrition 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000004886 process control Methods 0.000 description 1
Classifications
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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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D5/00—Condensation of vapours; Recovering volatile solvents by condensation
- B01D5/0033—Other features
- B01D5/0051—Regulation processes; Control systems, e.g. valves
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- Chemical Kinetics & Catalysis (AREA)
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- Automation & Control Theory (AREA)
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
- Feedback Control In General (AREA)
Abstract
The invention provides a full-process automatic control method and a system of a rectifying tower, which comprises the steps of obtaining driving instruction information, selecting a control loop and assigning a set value; judging whether the regulating valve or the pump is in place or not, and always performing cooling control on the condenser and pressure control on the tower; under the condition that the regulating valve or the pump is in place, the opening degree of the regulating valve is controlled through a PID module according to various measuring elements, and parameter information of the rectifying tower is obtained; selecting a pump which needs to be started correspondingly according to the parameter information of the rectifying tower, heating the required parameters to the corresponding temperature through a temperature climbing program, and then entering a full reflux state; after the full reflux state is operated for a preset time, the full reflux state enters a normal operation state and operates within a preset parameter range of the rectifying tower; and obtaining parking instruction information, and selecting a corresponding parking mode to finish the automatic control of the whole process of the rectifying tower. The invention realizes the automatic control of the whole process of the rectifying tower, greatly reduces the human intervention, furthest reduces the system deviation and disturbance caused by the human operation, and realizes the refined and stable control of the process parameters.
Description
Technical field
The present invention relates to automatic control technology fields, overall process autocontrol method more particularly, to rectifying column and are
System.
Background technology
Currently, the operation of the processes such as rectifying column driving, normal operation, parking needs high-quality operating personnel's manual operation, open
Quantity of steam is slowly improved when vehicle, observes tower reactor and return tank liquid level starts corresponding pump, adjust the flow of each section, it is normal to transport
It requires to accomplish material balance and energy balance when row, various aspects are taken into account in docking process, and slowly parking prevents from causing equipment
Damage, cumbersome, heavy workload, especially more rectifying columns drive simultaneously, normal operation and parking, be easy to cause and accidentally grasps
Make, and due to the difference of operating personnel's controlled level, the differentiation of rectifying column operation is bigger, is unfavorable for the steady of process units
Fixed operation and stablizing for product quality are promoted.
In conclusion lacking a kind of overall process autocontrol method of effective rectifying column at present.
Invention content
In view of this, the purpose of the present invention is to provide the overall process autocontrol method and system of rectifying column, realize
Rectifying column overall process automatically controls, and greatly reduces human intervention, system deviation caused by reducing manual operation to the maximum extent
And disturbance, realize the fining stability contorting of technological parameter.
In a first aspect, an embodiment of the present invention provides the overall process autocontrol methods of rectifying column, including：
Driving command information is obtained, control loop is selected and carries out setting value assignment；
Judge whether regulating valve or pump are in place, and the pressure for carrying out condenser cooling control and tower always controls；
In the case of the regulating valve or pump in place, the output of the regulating valve is controlled, and obtain rectifying column parameter
Information；
According to rectifying column parameter information selection mutually in requisition for the pump of startup, into infinite reflux state；
After the infinite reflux state runs preset duration, into normal operating condition, and in default rectifying column parameter model
Enclose interior operation；
Cutoff command information is obtained, corresponding parking mode is selected and is automatically controlled with the overall process for completing to rectifying column.
With reference to first aspect, an embodiment of the present invention provides the first possible embodiments of first aspect, wherein institute
It includes that valve site, pump discharge valve and steam condensate unload net valve to state regulating valve, described to judge whether regulating valve or pump wrap in place
It includes：
Judge whether all valves and pump put into；
Judge whether the valve site is in place, whether the pump discharge valve is opened, and the steam condensate, which unloads net valve, is
No opening.
With reference to first aspect, an embodiment of the present invention provides second of possible embodiments of first aspect, wherein institute
It includes the first regulating valve, the second regulating valve and third regulating valve to state regulating valve, and the condenser that carries out always cools down control and tower
Pressure control include：
First regulating valve is controlled using the first controller, second regulating valve is controlled using second controller, and
The third regulating valve is opened in the case where return tank pressure is less than predetermined threshold value, wherein first regulating valve is for adjusting
The condenser, second regulating valve and the third regulating valve are saved for adjusting the return tank.
With reference to first aspect, an embodiment of the present invention provides the third possible embodiments of first aspect, wherein institute
It further includes the 4th regulating valve to state regulating valve, described in the case of the regulating valve or pump in place, control the regulating valve into
Output includes：
In the case of the regulating valve or pump in place, the 4th regulating valve is controlled using third controller.
With reference to first aspect, an embodiment of the present invention provides the 4th kind of possible embodiments of first aspect, wherein institute
It includes rectifying column fluid information, return tank fluid information and reboiler temperature information to state rectifying column parameter information, and the pump includes
First reflux pump, the second reflux pump, the first kettle liquid pump and the second kettle liquid pump, it is described that phase is selected according to the rectifying column parameter information
In requisition for the pump of startup, include into infinite reflux state：
It needs to start first reflux pump according to the rectifying column fluid information and return tank fluid information judgement
Or second reflux pump；
Switch the controller of return valve, and obtains decision instruction information；
It is needed to start the first kettle liquid pump also according to the reboiler temperature information and decision instruction information judgement
It is the second kettle liquid pump；
Enter the infinite reflux state in the case where starting the second kettle liquid pump.
The 4th kind of possible embodiment with reference to first aspect, an embodiment of the present invention provides the 5th kind of first aspect
Possible embodiment, wherein the regulating valve further includes the 5th regulating valve and the 6th regulating valve, and the method further includes：
Into after the infinite reflux state, the 4th regulating valve, the 5th regulating valve and the 6th regulating valve are closed；
Judge whether the infinite reflux time is more than the preset duration.
With reference to first aspect, an embodiment of the present invention provides the 6th kind of possible embodiments of first aspect, wherein institute
It further includes rectifying column pressure information, rectifying column temperature information, memory fluid information and memory pressure to state rectifying column parameter information
Strong information, it is described after the infinite reflux state runs preset duration, into normal operating condition, and in default rectifying column parameter
It is run in range and includes：
More than the preset duration, according to the rectifying column pressure information, rectifying column temperature information, storage
Device fluid information and memory pressure information judge whether to start the normal operating condition, and obtain the normal operation instruction
Information, wherein the memory fluid information includes first memory fluid information and second memory fluid information, described to deposit
Reservoir pressure information includes first memory pressure information and second memory pressure information；
Enter the normal operating condition after, use single loop automatic control mode to the regulating valve controlled with
Rectifying column is set to operate in the default rectifying column parameter area.
The 6th kind of possible embodiment with reference to first aspect, an embodiment of the present invention provides the 7th kind of first aspect
Possible embodiment, wherein the method further includes：
Judge the rectifying column pressure information, rectifying column temperature information, memory fluid information and memory pressure information
Whether in the default rectifying column parameter area；
If not in the default rectifying column parameter area, judge whether to start parking procedure.
With reference to first aspect, an embodiment of the present invention provides the 8th kind of possible embodiments of first aspect, wherein stops
Vehicle mode includes the first parking mode and the second parking mode, and the acquisition cutoff command information selects corresponding parking mode
Including：
Obtain the cutoff command information, select first parking mode carry out parking or second parking mode into
Row parking, wherein first parking mode is to reenter the infinite reflux state, and second parking mode is with closing
The mode of steam controls rectifying column.
Second aspect, an embodiment of the present invention provides the overall process automatic control systems of rectifying column, including：
Acquiring unit, for obtaining driving command information, selecting control loop and carrying out setting value assignment；
Judging unit for judging whether regulating valve or pump are in place, and carries out the pressure of condenser cooling control and tower always
Power controls；
Control unit, in the case of the regulating valve or pump in place, controlling the output of the regulating valve, and obtain
Take rectifying column parameter information；
Infinite reflux unit, for the pump according to rectifying column parameter information selection phase in requisition for startup, into infinite reflux
State；
Normal operation unit is used for after the infinite reflux state runs preset duration, into normal operating condition, and
Operation in default rectifying column parameter area；
Parking unit selects corresponding parking mode to complete the full mistake to rectifying column for obtaining cutoff command information
Journey automatically controls.
The present invention provides the overall process autocontrol methods and system of rectifying column, including obtain driving command information, choosing
It selects control loop and carries out setting value assignment；Judge regulating valve or pump it is whether in place, and always carry out condenser cooling control and
The pressure of tower controls；In the case of regulating valve or pump in place, the output of valve is controlled to adjust, and obtains rectifying column parameter letter
Breath；According to the selection of rectifying column parameter information mutually in requisition for the pump of startup, into infinite reflux state；It is default in the operation of infinite reflux state
After duration, into normal operating condition, and run in default rectifying column parameter area；Cutoff command information is obtained, phase is selected
The parking mode answered is automatically controlled with the overall process for completing to rectifying column.It realizes rectifying column overall process to automatically control, greatly subtract
Human intervention is lacked, the fining of technological parameter is realized in system deviation and disturbance caused by reducing manual operation to the maximum extent
Stability contorting makes rectifier unit more stablize, also avoids the generation of maloperation.Significantly reduce rectifying column operating personnel simultaneously
Workload, reduce the requirement to operating personnel's level of skill.
Other features and advantages of the present invention will illustrate in the following description, also, partly become from specification
It obtains it is clear that understand through the implementation of the invention.The purpose of the present invention and other advantages are in specification, claims
And specifically noted structure is realized and is obtained in attached drawing.
To enable the above objects, features and advantages of the present invention to be clearer and more comprehensible, preferred embodiment cited below particularly, and coordinate
Appended attached drawing, is described in detail below.
Description of the drawings
It, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical solution in the prior art
Embodiment or attached drawing needed to be used in the description of the prior art are briefly described, it should be apparent that, in being described below
Attached drawing is some embodiments of the present invention, for those of ordinary skill in the art, before not making the creative labor
It puts, other drawings may also be obtained based on these drawings.
Fig. 1 is the overall process autocontrol method flow chart of rectifying column provided in an embodiment of the present invention；
Fig. 2 is the overall process autocontrol method flow chart of another rectifying column provided in an embodiment of the present invention；
Fig. 3 is Fig. 2 partial enlarged views provided in an embodiment of the present invention；
Fig. 4 is another Fig. 2 partial enlarged views provided in an embodiment of the present invention；
Fig. 5 is another Fig. 2 partial enlarged views provided in an embodiment of the present invention；
Fig. 6 is another Fig. 2 partial enlarged views provided in an embodiment of the present invention；
Fig. 7 is another Fig. 2 partial enlarged views provided in an embodiment of the present invention；
Fig. 8 is rectifying tower system hardware schematic provided in an embodiment of the present invention；
Fig. 9 is Fig. 8 partial enlarged views provided in an embodiment of the present invention；
Figure 10 is another Fig. 8 partial enlarged views provided in an embodiment of the present invention；
Figure 11 is another Fig. 8 partial enlarged views provided in an embodiment of the present invention；
Figure 12 is another Fig. 8 partial enlarged views provided in an embodiment of the present invention；
Figure 13 is another Fig. 8 partial enlarged views provided in an embodiment of the present invention；
Figure 14 is the overall process automatic control system schematic diagram of rectifying column provided in an embodiment of the present invention.
Icon：
10- acquiring units；20- judging units；30- control units；40- infinite reflux units；50- normal operation units；60-
Stop unit.
Specific implementation mode
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with attached drawing to the present invention
Technical solution be clearly and completely described, it is clear that described embodiments are some of the embodiments of the present invention, rather than
Whole embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art are not making creative work premise
Lower obtained every other embodiment, shall fall within the protection scope of the present invention.
Currently, the operation of the processes such as rectifying column driving, normal operation, parking needs high-quality operating personnel's manual operation, open
Quantity of steam is slowly improved when vehicle, observes tower reactor and return tank liquid level starts corresponding pump, adjust the flow of each section, it is normal to transport
It requires to accomplish material balance and energy balance when row, various aspects are taken into account in docking process, and slowly parking prevents from causing equipment
Damage, cumbersome, heavy workload, especially more rectifying columns drive simultaneously, normal operation and parking, be easy to cause and accidentally grasps
Make, and due to the difference of operating personnel's controlled level, the differentiation of rectifying column operation is bigger, is unfavorable for the steady of process units
Fixed operation and stablizing for product quality are promoted.
In conclusion lacking a kind of overall process autocontrol method of effective rectifying column at present.Based on this, the present invention is real
Apply the overall process autocontrol method and system of the rectifying column of example offer, operating personnel only need to click " automatic drive ", " normal
Rectifying column overall process production task can be realized in operation " and " automatic stopping " three buttons, and it is automatic to realize rectifying column overall process
Control, greatly reduces human intervention, system deviation and disturbance caused by reducing manual operation to the maximum extent, realizes technique ginseng
Several fining stability contortings.
It is automatic to the overall process of the rectifying column disclosed in the embodiment of the present invention first for ease of understanding the present embodiment
Control method.
Embodiment one：
Fig. 1 is the overall process autocontrol method flow chart of rectifying column provided in an embodiment of the present invention.
Referring to Fig.1, the overall process autocontrol method of rectifying column includes：
Step S101 obtains driving command information, selects control loop and carries out setting value assignment；
Step S102 judges whether regulating valve or pump are in place, and carries out the pressure control of condenser cooling control and tower always
System；
Step S103 controls to adjust the output of valve, and obtain rectifying column parameter in the case of regulating valve or pump in place
Information；
Step S104, according to the selection of rectifying column parameter information mutually in requisition for the pump of startup, into infinite reflux state；
Step S105 joins after infinite reflux state runs preset duration into normal operating condition, and in default rectifying column
Operation in number range；
Step S106 obtains cutoff command information, select corresponding parking mode with complete to the overall process of rectifying column from
Dynamic control.
Specifically, Fig. 2 is detail flowchart provided in an embodiment of the present invention, be would know that in conjunction with the hardware schematic in Fig. 7
All flows are done a generality and concluded by specific control method, here, Fig. 1, are unified for step S101~step S106.Fig. 3
To the partial enlarged view that Fig. 7 is Fig. 2, the method and step in Fig. 3 has corresponded to the step of the method in step S101 and step S102, Fig. 4
Suddenly the content that the method and step in step S103 and step S104, Fig. 5 has corresponded to part steps S105, Fig. 5 and Fig. 6 phases have been corresponded to
In conjunction with the method flow then corresponded in Overall Steps S104, the bottom left section of Fig. 7 corresponded to stop in step S106 it is specific
Content, here, parking mode 1 directly be connected the step for " infinite reflux " in Fig. 3.
It should be noted that Fig. 8 is the hardware schematic corresponding to this method embodiment, by corresponding method flow
Controller (such as PIC-2111012, FIC-2111021), regulating valve (such as PCV-2111234, FCV-2111422), pump is (such as
PU-21114A, PU-21115B etc.), parameter information measuring cell (such as TT-2111131, LT-2111101, PT-2112611)
Understand detailed control strategy and object.To express component title and the relationship in Fig. 8, Fig. 9 to Figure 13 is that the part of Fig. 8 is put
Big figure, Fig. 9 are Fig. 8 upper left schematic diagrames, and Figure 10 is Fig. 8 upper right portion schematic diagrames, and Figure 11 is Fig. 8 bottom left section schematic diagrames,
Figure 12 and Figure 13 is Fig. 8 lower right-most portion schematic diagrames.
Each step in rectifying column operating process has been carried out combing in logic by the embodiment of the present invention, will be original more
A unity loop control circuit has carried out global optimization, has carried out total tune linkage, in the different phase of rectifying column operation, control
Automatic switchover has been carried out in circuit according to parameter setting and temperature rate's setting, safely and smoothly completes rectifying column operation, entire mistake
Journey has substantially carried out automatic running (a small amount of human intervention is needed when start and stop pump).Click driving button, so that it may realize rectifying
Tower automatic heating is driven, including is fed, is passed through steam heating, is passed through a variety of operations such as cooling water cooling, automatic start-stop pump, until
Reach infinite reflux state.Infinite reflux clicks normal operation button after running a period of time, and rectifying column enters normal operating condition,
It is run in pre-set parameter area.Stop button is clicked, steam parking drops in rectifying column automatic slowly.
That is, operating personnel only need to click " automatic to drive ", " normal operation " and " automatic stopping " three buttons
Rectifying column overall process production task can be realized.
Exemplary embodiment according to the present invention, regulating valve include that valve site, pump discharge valve and steam condensate unload only
Valve, judge regulating valve or pump whether include in place：
Judge whether all valves and pump put into；
Judge whether the valve site is in place, and whether pump discharge valve is opened, steam condensate unloads whether net valve is opened.
Exemplary embodiment according to the present invention, regulating valve include the first regulating valve, the second regulating valve and third regulating valve,
Always carrying out condenser cooling control and the pressure control of tower includes：
The first regulating valve (PCV-2111234) is controlled using the first controller (PIC-2111012), utilizes second controller
(PIC-2111311) the second regulating valve of control (PCV-2111311), and beaten in the case where return tank pressure is less than predetermined threshold value
Open third regulating valve (PV-2111313), wherein the first regulating valve is for adjusting condenser, the second regulating valve and third regulating valve
For adjusting return tank.
Exemplary embodiment according to the present invention, regulating valve further includes the 4th regulating valve (FCV-2111021), in regulating valve
Or in the case that pump is in place, the output for controlling to adjust valve includes：
In the case of regulating valve or pump in place, the 4th regulating valve is controlled using third controller (FIC-2111021)
(FCV-2111021)。
Exemplary embodiment according to the present invention, rectifying column parameter information include rectifying column fluid information, return tank liquid
Information and reboiler temperature information, pump includes the first reflux pump (PU-21114A), the second reflux pump (PU-21114B), the first kettle
Liquid pump (PU-21115A) and the second kettle liquid pump (PU-21114B), according to the selection of rectifying column parameter information mutually in requisition for startup
It pumps, includes into infinite reflux state：
It is needed to start the first reflux pump or the second reflux according to rectifying column fluid information and the judgement of return tank fluid information
Pump；
Switch the controller of return valve (FCV-2111422), and obtains decision instruction information；
It is needed to start the first kettle liquid pump or the second kettle liquid pump according to reboiler temperature information and the judgement of decision instruction information；
Enter infinite reflux state in the case where starting the second kettle liquid pump.
Exemplary embodiment according to the present invention, regulating valve further include the 5th regulating valve and the 6th regulating valve, and method is also wrapped
It includes：
Into after infinite reflux state, the 4th regulating valve (FCV-2111021), the 5th regulating valve (LCV-2111301) are closed
With the 6th regulating valve (LCV-2111001)；
Judge whether the infinite reflux time is more than preset duration.
Exemplary embodiment according to the present invention, rectifying column parameter information further include rectifying column pressure information, rectifying tower temperature
Information, memory fluid information and memory pressure information are spent, after infinite reflux state runs preset duration, into normal operation
State, and operation includes in default rectifying column parameter area：
More than preset duration, believed according to rectifying column pressure information, rectifying column temperature information, memory liquid
Breath and memory pressure information judge whether to start normal operating condition, and obtain normal operation command information, wherein memory
Fluid information includes first memory fluid information and second memory fluid information, and memory pressure information includes the first storage
Device pressure information and second memory pressure information；
After entering normal operating condition, rectifying column is controlled such that regulating valve using single loop automatic control mode
It operates in default rectifying column parameter area.
Exemplary embodiment according to the present invention, method further include：
Whether judge rectifying column pressure information, rectifying column temperature information, memory fluid information and memory pressure information
In default rectifying column parameter area；
If not in default rectifying column parameter area, judge whether to start parking procedure.
Exemplary embodiment according to the present invention, parking mode include the first parking mode and the second parking mode, are obtained
Cutoff command information, selects the corresponding parking mode to include：
Cutoff command information is obtained, the first parking mode of selection carries out parking or the second parking mode stops, wherein
First parking mode is to reenter infinite reflux state, and the second parking mode is to control rectifying column with the mode of steam off.
Embodiment two：
Figure 14 is the overall process automatic control system schematic diagram of rectifying column provided in an embodiment of the present invention.
Referring to Fig.1 4, the overall process automatic control system of rectifying column, including：
Acquiring unit 10, for obtaining driving command information, selecting control loop and carrying out setting value assignment；
Judging unit 20 for judging whether regulating valve or pump are in place, and carries out condenser cooling control and tower always
Pressure controls；
Control unit 30, in the case of the regulating valve or pump in place, controlling the output of the regulating valve, and
Obtain rectifying column parameter information；
Infinite reflux unit 40, for, mutually in requisition for the pump of startup, being returned into complete according to rectifying column parameter information selection
Stream mode；
Normal operation unit 50 is used for after the infinite reflux state runs preset duration, into normal operating condition, and
It is run in default rectifying column parameter area；
Parking unit 60 selects corresponding parking mode to complete to the complete of rectifying column for obtaining cutoff command information
Process automatically controls.
The overall process automatic control system of rectifying column provided in an embodiment of the present invention, the rectifying column provided with above-described embodiment
Overall process autocontrol method technical characteristic having the same reach identical so can also solve identical technical problem
Technique effect.
The overall process autocontrol method for the rectifying column that the embodiment of the present invention is provided and the computer program production of system
Product, including the computer readable storage medium of program code is stored, before the instruction that said program code includes can be used for execution
Method described in the embodiment of the method for face, specific implementation can be found in embodiment of the method, and details are not described herein.
It is apparent to those skilled in the art that for convenience and simplicity of description, the system of foregoing description
It with the specific work process of device, can refer to corresponding processes in the foregoing method embodiment, details are not described herein.
It, can be with if the function is realized in the form of SFU software functional unit and when sold or used as an independent product
It is stored in a computer read/write memory medium.Based on this understanding, technical scheme of the present invention is substantially in other words
The part of the part that contributes to existing technology or the technical solution can be expressed in the form of software products, the meter
Calculation machine software product is stored in a storage medium, including some instructions are used so that a computer equipment (can be
People's computer, server or network equipment etc.) it performs all or part of the steps of the method described in the various embodiments of the present invention.
And storage medium above-mentioned includes：USB flash disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), arbitrary access are deposited
The various media that can store program code such as reservoir (RAM, Random Access Memory), magnetic disc or CD.
Finally it should be noted that：Embodiment described above, only specific implementation mode of the invention, to illustrate the present invention
Technical solution, rather than its limitations, scope of protection of the present invention is not limited thereto, although with reference to the foregoing embodiments to this hair
It is bright to be described in detail, it will be understood by those of ordinary skill in the art that：Any one skilled in the art
In the technical scope disclosed by the present invention, it can still modify to the technical solution recorded in previous embodiment or can be light
It is readily conceivable that variation or equivalent replacement of some of the technical features；And these modifications, variation or replacement, do not make
The essence of corresponding technical solution is detached from the spirit and scope of technical solution of the embodiment of the present invention, should all cover the protection in the present invention
Within the scope of.Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. a kind of overall process autocontrol method of rectifying column, which is characterized in that including：
Driving command information is obtained, control loop is selected and carries out setting value assignment；
Judge whether regulating valve or pump are in place, and the pressure for carrying out condenser cooling control and tower always controls；
In the case of the regulating valve or pump in place, the output of the regulating valve is controlled, and obtain rectifying column parameter information；
According to rectifying column parameter information selection mutually in requisition for the pump of startup, into infinite reflux state；
After the infinite reflux state runs preset duration, into normal operating condition, and in default rectifying column parameter area
Operation；
Cutoff command information is obtained, corresponding parking mode is selected and is automatically controlled with the overall process for completing to rectifying column.
2. the overall process autocontrol method of rectifying column according to claim 1, which is characterized in that the regulating valve includes
Valve site, pump discharge valve and steam condensate unload net valve, it is described judge regulating valve or pump whether include in place：
Judge whether all valves and pump put into；
Judge whether the valve site is in place, whether the pump discharge valve is opened, and the steam condensate unloads whether net valve is beaten
It opens.
3. the overall process autocontrol method of rectifying column according to claim 1, which is characterized in that the regulating valve includes
First regulating valve, the second regulating valve and third regulating valve, the pressure control packet for carrying out condenser cooling control and tower always
It includes：
First regulating valve is controlled using the first controller, controls second regulating valve using second controller, and returning
Stream tank pressure opens the third regulating valve in the case of being less than predetermined threshold value, wherein first regulating valve is for adjusting institute
Condenser, second regulating valve and the third regulating valve are stated for adjusting the return tank.
4. the overall process autocontrol method of rectifying column according to claim 1, which is characterized in that the regulating valve is also wrapped
The 4th regulating valve is included, in the case of the regulating valve or pump in place, the output for controlling the regulating valve includes：
In the case of the regulating valve or pump in place, the 4th regulating valve is controlled using third controller.
5. the overall process autocontrol method of rectifying column according to claim 1, which is characterized in that the rectifying column parameter
Information includes rectifying column liquid material information, return tank liquid material information and reboiler temperature information, and the pump includes first
Reflux pump, the second reflux pump, the first kettle liquid pump and the second kettle liquid pump, according to rectifying column parameter information selection mutually in requisition for opening
Dynamic pump includes into infinite reflux state：
It needs to start first reflux pump still according to the rectifying column fluid information and return tank fluid information judgement
Second reflux pump；
Switch the controller of return valve, and obtains decision instruction information；
Need to start the first kettle liquid pump or the according to the reboiler temperature information and decision instruction information judgement
Two kettle liquids pump；
Enter the infinite reflux state in the case where starting the second kettle liquid pump.
6. the overall process autocontrol method of rectifying column according to claim 5, which is characterized in that the regulating valve is also wrapped
The 5th regulating valve and the 6th regulating valve are included, the method further includes：
Into after the infinite reflux state, the 4th regulating valve, the 5th regulating valve and the 6th regulating valve are closed；
Judge whether the infinite reflux time is more than the preset duration.
7. the overall process autocontrol method of rectifying column according to claim 1, which is characterized in that the rectifying column parameter
Information further includes rectifying column pressure information, rectifying column temperature information, memory fluid information and memory pressure information, it is described
After the infinite reflux state operation preset duration, into normal operating condition, and packet is run in default rectifying column parameter area
It includes：
More than the preset duration, according to the rectifying column pressure information, rectifying column temperature information, memory liquid
Body information and memory pressure information judge whether to start the normal operating condition, and obtain the normal operation instruction letter
Breath, wherein the memory fluid information includes first memory fluid information and second memory fluid information, the storage
Device pressure information includes first memory pressure information and second memory pressure information；
After entering the normal operating condition, essence is controlled such that the regulating valve using single loop automatic control mode
Tower is evaporated to operate in the default rectifying column parameter area.
8. the overall process autocontrol method of rectifying column according to claim 7, which is characterized in that the method is also wrapped
It includes：
Whether judge the rectifying column pressure information, rectifying column temperature information, memory fluid information and memory pressure information
In the default rectifying column parameter area；
If not in the default rectifying column parameter area, judge whether to start parking procedure.
9. the overall process autocontrol method of rectifying column according to claim 1, which is characterized in that parking mode includes the
One parking mode and the second parking mode, the acquisition cutoff command information select the corresponding parking mode to include：
The cutoff command information is obtained, selection first parking mode carries out parking or second parking mode is stopped
Vehicle, wherein first parking mode is to reenter the infinite reflux state, and second parking mode is to use steam off
Mode control rectifying column.
10. a kind of overall process automatic control system of rectifying column, which is characterized in that including：
Acquiring unit, for obtaining driving command information, selecting control loop and carrying out setting value assignment；
Judging unit for judging whether regulating valve or pump are in place, and carries out the pressure control of condenser cooling control and tower always
System；
Control unit, in the case of the regulating valve or pump in place, controlling the output of the regulating valve, and obtain essence
Evaporate tower parameter information；
Infinite reflux unit, for the pump according to rectifying column parameter information selection phase in requisition for startup, into infinite reflux state；
Normal operation unit, for after the infinite reflux state runs preset duration, into normal operating condition, and presetting
Operation in rectifying column parameter area；
Stop unit, for obtaining cutoff command information, select corresponding parking mode with complete to the overall process of rectifying column from
Dynamic control.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112014551A (en) * | 2020-07-22 | 2020-12-01 | 四川科路泰交通科技有限公司 | Automatic selection control method and system for liquid storage tank for asphalt test |
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