CN108721934B - 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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- CN108721934B CN108721934B CN201810937461.XA CN201810937461A CN108721934B CN 108721934 B CN108721934 B CN 108721934B CN 201810937461 A CN201810937461 A CN 201810937461A CN 108721934 B CN108721934 B CN 108721934B
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- 238000000034 method Methods 0.000 title claims abstract description 93
- 230000001105 regulatory effect Effects 0.000 claims abstract description 74
- 238000010992 reflux Methods 0.000 claims abstract description 69
- 230000008569 process Effects 0.000 claims abstract description 36
- 230000001276 controlling effect Effects 0.000 claims abstract description 17
- 238000001816 cooling Methods 0.000 claims abstract description 12
- 239000007788 liquid Substances 0.000 claims description 46
- 238000003860 storage Methods 0.000 claims description 20
- 238000004886 process control Methods 0.000 claims description 7
- 238000007599 discharging Methods 0.000 claims description 4
- 238000010926 purge Methods 0.000 claims description 2
- 239000011344 liquid material Substances 0.000 claims 2
- 238000010438 heat treatment Methods 0.000 abstract description 4
- 230000009194 climbing Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000004069 differentiation Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 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
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
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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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- 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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Abstract
The invention provides a whole-process automatic control method and a whole-process automatic control system for a rectifying tower, which comprise the steps of obtaining driving instruction information, selecting a control loop and carrying out set value assignment; judging whether the regulating valve and the pump are in place or not, and always performing condenser cooling control and tower pressure control; under the condition that the regulating valve and the pump are in place, controlling the opening of the regulating valve through a PID module according to various measuring elements, and acquiring rectifying tower parameter information; selecting a pump to be started correspondingly according to the rectifying tower parameter information, heating the required parameter to the corresponding temperature through a temperature climbing program, and then entering a total reflux state; after the operation is performed for a preset time period in the total reflux state, the normal operation state is entered, and the operation is performed within a preset rectifying tower parameter range; and obtaining parking instruction information, and selecting a corresponding parking mode to complete the whole process automatic control of the rectifying tower. The invention realizes the whole process automatic control of the rectifying tower, greatly reduces human intervention, furthest reduces system deviation and disturbance caused by human operation, and realizes the fine and stable control of technological parameters.
Description
Technical Field
The invention relates to the technical field of automatic control, in particular to a whole-process automatic control method and system of a rectifying tower.
Background
At present, the operation of processes such as rectifying column start-up, normal operating, stopping need high quality operating personnel manual operation, slowly improve the steam volume during the start-up, observe tower cauldron and reflux drum liquid level and start corresponding machine pump, adjust the flow of each part, the requirement is accomplished material balance and energy balance during normal operating, it prevents to cause the harm to equipment to take into account the slow stopping in each aspect in the stopping process, complex operation, the work load is big, especially many rectifying columns start-up simultaneously, normal operating and stop, cause the maloperation easily, moreover because operating personnel control level's difference, rectifying column operation's differentiation is bigger, be unfavorable for the steady operation of apparatus for production and the steady promotion of product quality.
In view of the above, an effective automatic control method for the whole process of the rectifying tower is lacking at present.
Disclosure of Invention
In view of the above, the invention aims to provide the whole-process automatic control method and system for the rectifying tower, so that the whole-process automatic control of the rectifying tower is realized, the human intervention is greatly reduced, the system deviation and disturbance caused by the human operation are furthest reduced, and the fine and stable control of the technological parameters is realized.
In a first aspect, an embodiment of the present invention provides an automatic overall process control method for a rectifying tower, including:
acquiring driving instruction information, selecting a control loop and carrying out set value assignment;
judging whether the regulating valve and the pump are in place or not, and always performing condenser cooling control and tower pressure control;
under the condition that the regulating valve and the pump are in place, controlling the inlet and outlet amount of the regulating valve and acquiring the parameter information of the rectifying tower;
selecting a pump to be started correspondingly according to the rectifying tower parameter information, and entering a total reflux state;
after the total reflux state is operated for a preset time, the normal operation state is entered, and the operation is performed within a preset rectifying tower parameter range;
and obtaining parking instruction information, and selecting a corresponding parking mode to complete the whole process automatic control of the rectifying tower.
With reference to the first aspect, the embodiment of the present invention provides a first possible implementation manner of the first aspect, wherein the adjusting valve includes a field valve, a pump outlet valve, and a steam condensate discharging valve, and the determining whether the adjusting valve and the pump are in place includes:
judging whether all valves and pumps are put in;
and judging whether the field valve is in place, whether the pump outlet valve is opened, and whether the steam condensate discharging valve is opened.
With reference to the first aspect, the embodiment of the present invention provides a second possible implementation manner of the first aspect, wherein the adjusting valves include a first adjusting valve, a second adjusting valve, and a third adjusting valve, and the always performing condenser cooling control and pressure control of the tower includes:
and controlling the first regulating valve by using a first controller, controlling the second regulating valve by using a second controller, and opening the third regulating valve under the condition that the pressure of the reflux tank is smaller than a preset threshold, wherein the first regulating valve is used for regulating the condenser, and the second regulating valve and the third regulating valve are used for regulating the reflux tank.
With reference to the first aspect, an embodiment of the present invention provides a third possible implementation manner of the first aspect, wherein the adjusting valve further includes a fourth adjusting valve, and controlling the amount of the adjusting valve when the adjusting valve and the pump are in place includes:
with the regulator valve and pump in place, the fourth regulator valve is controlled with a third controller.
With reference to the first aspect, an embodiment of the present invention provides a fourth possible implementation manner of the first aspect, where the rectifying tower parameter information includes rectifying tower liquid information, reflux tank liquid information, and reboiler temperature information, the pumps include a first reflux pump, a second reflux pump, a first tank liquid pump, and a second tank liquid pump, and the selecting, according to the rectifying tower parameter information, a pump to be started correspondingly includes:
judging whether the first reflux pump or the second reflux pump needs to be started according to the rectifying tower liquid information and the reflux tank liquid information;
a controller for switching the reflux regulating valve and acquiring judgment instruction information;
judging whether the first kettle liquid pump or the second kettle liquid pump needs to be started according to the reboiler temperature information and the judging instruction information;
and entering the total reflux state under the condition of starting the second kettle liquid pump.
With reference to the fourth possible implementation manner of the first aspect, the embodiment of the present invention provides a fifth possible implementation manner of the first aspect, wherein the adjusting valve further includes a fifth adjusting valve and a sixth adjusting valve, and the method further includes:
after entering the total reflux state, closing a fourth regulating valve, the fifth regulating valve and the sixth regulating valve;
judging whether the total reflux time is longer than the preset time length.
With reference to the first aspect, an embodiment of the present invention provides a sixth possible implementation manner of the first aspect, where the rectifying tower parameter information further includes rectifying tower pressure information, rectifying tower temperature information, memory liquid information, and memory pressure information, and after the operating in the total reflux state for a preset period of time, entering a normal operating state, and operating in a preset rectifying tower parameter range includes:
judging whether to start the normal running state or not according to the rectifying tower pressure information, the rectifying tower temperature information, the memory liquid information and the memory pressure information under the condition that the preset time length is longer than the preset time length, and acquiring the normal running instruction information, wherein the memory liquid information comprises first memory liquid information and second memory liquid information, and the memory pressure information comprises first memory pressure information and second memory pressure information;
after entering the normal running state, the regulating valve is controlled by adopting a single-loop automatic control mode so that the rectifying tower runs within the preset rectifying tower parameter range.
With reference to the sixth possible implementation manner of the first aspect, an embodiment of the present invention provides a seventh possible implementation manner of the first aspect, where the method further includes:
judging whether the pressure information of the rectifying tower, the temperature information of the rectifying tower, the liquid information of a storage device and the pressure information of the storage device are within the preset rectifying tower parameter range or not;
if the stopping time is not within the preset rectifying tower parameter range, judging whether to start a stopping program.
With reference to the first aspect, an embodiment of the present invention provides an eighth possible implementation manner of the first aspect, where the parking modes include a first parking mode and a second parking mode, and the acquiring the parking instruction information, and selecting a corresponding parking mode includes:
and obtaining the parking instruction information, and selecting the first parking mode to park or the second parking mode to park, wherein the first parking mode is to reenter the total reflux state, and the second parking mode is to control the rectifying tower in a mode of closing steam.
In a second aspect, an embodiment of the present invention provides an automatic overall process control system for a rectifying column, including:
the acquisition unit is used for acquiring driving instruction information, selecting a control loop and carrying out set value assignment;
the judging unit is used for judging whether the regulating valve and the pump are in place or not and always carrying out condenser cooling control and tower pressure control;
the control unit is used for controlling the inlet and outlet amount of the regulating valve and acquiring the parameter information of the rectifying tower under the condition that the regulating valve and the pump are in place;
the total reflux unit is used for selecting a pump to be started correspondingly according to the rectifying tower parameter information and entering a total reflux state;
the normal operation unit is used for entering a normal operation state after the total reflux state is operated for a preset time period and operating in a preset rectifying tower parameter range;
and the parking unit is used for acquiring parking instruction information and selecting a corresponding parking mode to complete the whole process automatic control of the rectifying tower.
The invention provides a whole-process automatic control method and a whole-process automatic control system for a rectifying tower, which comprise the steps of obtaining driving instruction information, selecting a control loop and carrying out set value assignment; judging whether the regulating valve and the pump are in place or not, and always performing condenser cooling control and tower pressure control; under the condition that the regulating valve and the pump are in place, controlling the inlet and outlet of the regulating valve and acquiring the parameter information of the rectifying tower; selecting a pump to be started correspondingly according to the rectifying tower parameter information, and entering a total reflux state; after the operation is performed for a preset time period in the total reflux state, the normal operation state is entered, and the operation is performed within a preset rectifying tower parameter range; and obtaining parking instruction information, and selecting a corresponding parking mode to complete the whole process automatic control of the rectifying tower. The whole process automatic control of the rectifying tower is realized, the human intervention is greatly reduced, the system deviation and disturbance caused by the human operation are reduced to the maximum extent, the fine stable control of the technological parameters is realized, the rectifying device is more stable, and the occurrence of misoperation is avoided. Meanwhile, the workload of rectifying tower operators is greatly reduced, and the requirements on the skill level of the operators are reduced.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
In order to make the above objects, features and advantages of the present invention more comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
FIG. 1 is a flow chart of an automatic control method of the whole process of a rectifying tower provided by the embodiment of the invention;
FIG. 2 is a flowchart of an automatic control method of the whole process of another rectifying tower provided by the embodiment of the invention;
FIG. 3 is an enlarged view of a portion of FIG. 2 provided in an embodiment of the present invention;
FIG. 4 is an enlarged view of a portion of another FIG. 2 provided in accordance with an embodiment of the present invention;
FIG. 5 is an enlarged view of a portion of FIG. 2, provided in accordance with an embodiment of the present invention;
FIG. 6 is an enlarged view of a portion of FIG. 2, provided in accordance with an embodiment of the present invention;
FIG. 7 is an enlarged view of a portion of FIG. 2, provided in accordance with an embodiment of the present invention;
FIG. 8 is a schematic diagram of the hardware of a rectifying tower system according to an embodiment of the present invention;
FIG. 9 is an enlarged view of a portion of FIG. 8 provided in an embodiment of the present invention;
FIG. 10 is another enlarged view of a portion of FIG. 8 provided in accordance with an embodiment of the present invention;
FIG. 11 is another enlarged view of a portion of FIG. 8 provided in accordance with an embodiment of the present invention;
FIG. 12 is another enlarged view of a portion of FIG. 8 provided in accordance with an embodiment of the present invention;
FIG. 13 is another enlarged view of a portion of FIG. 8 provided in accordance with an embodiment of the present invention;
fig. 14 is a schematic diagram of an automatic control system for the whole process of the rectifying tower according to the embodiment of the invention.
Icon:
10-an acquisition unit; 20-judging unit; 30-a control unit; 40-total reflux unit; 50-a normal operation unit; 60-parking unit.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
At present, the operation of processes such as rectifying column start-up, normal operating, stopping need high quality operating personnel manual operation, slowly improve the steam volume during the start-up, observe tower cauldron and reflux drum liquid level and start corresponding machine pump, adjust the flow of each part, the requirement is accomplished material balance and energy balance during normal operating, it prevents to cause the harm to equipment to take into account the slow stopping in each aspect in the stopping process, complex operation, the work load is big, especially many rectifying columns start-up simultaneously, normal operating and stop, cause the maloperation easily, moreover because operating personnel control level's difference, rectifying column operation's differentiation is bigger, be unfavorable for the steady operation of apparatus for production and the steady promotion of product quality.
In view of the above, an effective automatic control method for the whole process of the rectifying tower is lacking at present. Based on the above, the whole process automatic control method and system for the rectifying tower provided by the embodiment of the invention can realize the whole process production task of the rectifying tower by only clicking three buttons of automatic start, normal operation and automatic stop, thereby realizing the whole process automatic control of the rectifying tower, greatly reducing human intervention, furthest reducing system deviation and disturbance caused by human operation and realizing the fine and stable control of technological parameters.
For the convenience of understanding the embodiment, the whole process automatic control method of the rectifying tower disclosed by the embodiment of the invention is firstly described.
Embodiment one:
fig. 1 is a flowchart of an automatic control method of the whole process of a rectifying tower provided by an embodiment of the invention.
Referring to fig. 1, the whole process automatic control method of the rectifying tower includes:
step S101, obtaining driving instruction information, selecting a control loop and carrying out set value assignment;
step S102, judging whether a regulating valve and a pump are in place, and always performing condenser cooling control and tower pressure control;
step S103, under the condition that the regulating valve and the pump are in place, controlling the inlet amount of the regulating valve and acquiring the parameter information of the rectifying tower;
step S104, selecting a corresponding pump to be started according to the rectifying tower parameter information, and entering a total reflux state;
step S105, after the operation in the total reflux state is performed for a preset period of time, entering a normal operation state and operating in a preset rectifying tower parameter range;
step S106, obtaining parking instruction information, and selecting a corresponding parking mode to complete the whole process automatic control of the rectifying tower.
Specifically, fig. 2 is a detailed flowchart provided in the embodiment of the present invention, and a specific control method can be known by combining with the hardware schematic in fig. 7, where fig. 1 summarizes all the processes to be unified into steps S101 to S106. Fig. 3 to 7 are partial enlarged views of fig. 2, the method steps in fig. 3 correspond to step S101 and step S102, the method steps in fig. 4 correspond to step S103 and step S104, the method steps in fig. 5 correspond to the contents of part of step S105, the method flow in all steps S104 is corresponding to fig. 5 in combination with fig. 6, and the lower left part of fig. 7 corresponds to the specific contents of parking in step S106, where parking pattern 1 is directly connected to the step "total reflux" in fig. 3.
It should be noted that, fig. 8 is a schematic hardware diagram corresponding to the embodiment of the method, and detailed control strategies and objects can be known by corresponding controllers (such as PIC-2111012, FIC-2111021, etc.), regulating valves (such as PCV-2111234, FCV-2111422), pumps (such as PU-21114A, PU-21115B, etc.), and parameter information measuring elements (such as TT-2111131, LT-2111101, PT-2112611, etc.) in the flow of the method. To clarify the names and relationships of the components in fig. 8, fig. 9 to 13 are enlarged partial views of fig. 8, fig. 9 is a schematic view of the upper left part of fig. 8, fig. 10 is a schematic view of the upper right part of fig. 8, fig. 11 is a schematic view of the lower left part of fig. 8, and fig. 12 and 13 are schematic views of the lower right part of fig. 8.
According to the embodiment of the invention, each step in the operation process of the rectifying tower is logically combed, the original multiple single-loop control loops are integrally optimized, integral coordinated linkage is realized, the control loops are automatically switched according to parameter setting and temperature rate setting in different stages of the operation of the rectifying tower, the operation of the rectifying tower is safely and stably completed, and the whole process basically realizes automatic operation (a small amount of human intervention is required when a pump is started and stopped). The automatic heating start of the rectifying tower can be realized by clicking the start button, and the automatic heating start of the rectifying tower comprises various operations such as feeding, steam heating, cooling water cooling, automatic start-stop of the pump and the like until the total reflux state is reached. After the total reflux operation is performed for a period of time, a normal operation button is clicked, the rectifying tower enters a normal operation state, and the rectifying tower operates in a preset parameter range. And clicking a stop button, and automatically and slowly lowering steam for stopping the rectifying tower.
That is, the operator can realize the whole process production task of the rectifying tower only by clicking three buttons of automatic start, normal operation and automatic stop.
According to an exemplary embodiment of the present invention, the regulator valve includes a field valve, a pump outlet valve, and a vapor condensate purge valve, and determining whether the regulator valve and pump are in place includes:
judging whether all valves and pumps are put in;
judging whether the site valve is in place, whether the pump outlet valve is opened, and whether the steam condensate discharging valve is opened.
According to an exemplary embodiment of the present invention, the regulating valve includes a first regulating valve, a second regulating valve, and a third regulating valve, and always performing condenser cooling control and pressure control of the column includes:
the first control valve (PCV-2111234) is controlled by a first controller (PIC-2111012), the second control valve (PCV-2111311) is controlled by a second controller (PIC-2111311), and a third control valve (PV-2111313) is opened when the reflux drum pressure is less than a predetermined threshold value, wherein the first control valve is used for controlling the condenser, and the second control valve and the third control valve are used for controlling the reflux drum.
According to an exemplary embodiment of the invention, the regulator valve further comprises a fourth regulator valve (FCV-2111021), and with the regulator valve and the pump in place, controlling the amount of inlet and outlet of the regulator valve comprises:
with the regulator valve and pump in place, the fourth regulator valve (FCV-2111021) is controlled by a third controller (FIC-2111021).
According to an exemplary embodiment of the present invention, the rectifying column parameter information includes rectifying column liquid information, reflux drum liquid information, and reboiler temperature information, the pumps include a first reflux pump (PU-21114A), a second reflux pump (PU-21114B), a first tank liquid pump (PU-21115A), and a second tank liquid pump (PU-21115B), and selecting a pump to be started according to the rectifying column parameter information, and entering the full reflux state includes:
judging whether the first reflux pump or the second reflux pump needs to be started according to the rectifying tower liquid information and the reflux tank liquid information;
a controller for switching the reflux regulating valve (FCV-2111422) and acquiring judgment instruction information;
judging whether the first kettle liquid pump or the second kettle liquid pump needs to be started according to reboiler temperature information and judgment instruction information;
and (3) entering a total reflux state under the condition of starting the second kettle liquid pump.
According to an exemplary embodiment of the invention, the regulating valve further comprises a fifth regulating valve and a sixth regulating valve, the method further comprising:
after entering the full reflux state, the fourth regulating valve (FCV-2111021), the fifth regulating valve (LCV-2111301) and the sixth regulating valve (LCV-2111001) are closed;
judging whether the total reflux time is longer than a preset time length.
According to an exemplary embodiment of the present invention, the rectifying column parameter information further includes rectifying column pressure information, rectifying column temperature information, memory liquid information, and memory pressure information, and after the operation in the total reflux state for a preset period of time, entering the normal operation state, and operating within the preset rectifying column parameter range includes:
judging whether to start a normal operation state or not according to rectifying tower pressure information, rectifying tower temperature information, storage liquid information and storage pressure information under the condition that the rectifying tower pressure information, the storage liquid information and the storage pressure information are longer than a preset time period, and acquiring normal operation instruction information, wherein the storage liquid information comprises first storage liquid information and second storage liquid information, and the storage pressure information comprises first storage pressure information and second storage pressure information;
after entering a normal running state, the regulating valve is controlled by adopting a single-loop automatic control mode so that the rectifying tower runs within a preset rectifying tower parameter range.
According to an exemplary embodiment of the invention, the method further comprises:
judging whether the pressure information of the rectifying tower, the temperature information of the rectifying tower, the liquid information of the storage device and the pressure information of the storage device are within a preset rectifying tower parameter range or not;
if the stopping time is not within the preset rectifying tower parameter range, judging whether to start the stopping program.
According to an exemplary embodiment of the present invention, the parking modes include a first parking mode and a second parking mode, the obtaining parking instruction information, and the selecting a corresponding parking mode includes:
and obtaining parking instruction information, and selecting a first parking mode to park or a second parking mode to park, wherein the first parking mode is to reenter a total reflux state, and the second parking mode is to control the rectifying tower in a mode of closing steam.
Embodiment two:
fig. 14 is a schematic diagram of an automatic control system for the whole process of the rectifying tower according to the embodiment of the invention.
Referring to fig. 14, the whole process automatic control system of the rectifying tower includes:
the acquisition unit 10 is used for acquiring driving instruction information, selecting a control loop and performing set value assignment;
a judging unit 20 for judging whether the regulating valve and the pump are in place and always performing condenser cooling control and tower pressure control;
the control unit 30 is used for controlling the inlet and outlet amounts of the regulating valve and acquiring the parameter information of the rectifying tower under the condition that the regulating valve and the pump are in place;
the total reflux unit 40 is used for selecting a corresponding pump to be started according to the rectifying tower parameter information and entering a total reflux state;
the normal operation unit 50 is configured to enter a normal operation state after operating in the total reflux state for a preset period of time, and operate in a preset rectifying tower parameter range;
and the parking unit 60 is used for acquiring parking instruction information and selecting a corresponding parking mode to complete the whole process automatic control of the rectifying tower.
The whole-process automatic control system of the rectifying tower provided by the embodiment of the invention has the same technical characteristics as the whole-process automatic control method of the rectifying tower provided by the embodiment, so that the same technical problems can be solved, and the same technical effects can be achieved.
The computer program product of the whole process automatic control method and system for a rectifying tower provided by the embodiment of the invention comprises a computer readable storage medium storing program codes, wherein the instructions included in the program codes can be used for executing the method described in the method embodiment, and specific implementation can be referred to the method embodiment and will not be repeated here.
It will be clear to those skilled in the art that, for convenience and brevity of description, specific working procedures of the above-described system and apparatus may refer to corresponding procedures in the foregoing method embodiments, which are not described herein again.
The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention may be embodied essentially or in a part contributing to the prior art or in a part of the technical solution, in the form of a software product stored in a storage medium, comprising several instructions for causing a computer device (which may be a personal computer, a server, a network device, etc.) to perform all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a random access Memory (RAM, random Access Memory), a magnetic disk, or an optical disk, or other various media capable of storing program codes.
Finally, it should be noted that: the above examples are only specific embodiments of the present invention, and are not intended to limit the scope of the present invention, but it should be understood by those skilled in the art that the present invention is not limited thereto, and that the present invention is described in detail with reference to the foregoing examples: any person skilled in the art may modify or easily conceive of the technical solution described in the foregoing embodiments, or perform equivalent substitution of some of the technical features, while remaining within the technical scope of the present disclosure; such modifications, changes or substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention, and are intended to be included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. The whole process automatic control method of the rectifying tower is characterized by comprising the following steps of:
acquiring driving instruction information, selecting a control loop and carrying out set value assignment;
judging whether the regulating valve and the pump are in place or not, and always performing condenser cooling control and tower pressure control;
under the condition that the regulating valve and the pump are in place, controlling the inlet and outlet amount of the regulating valve and acquiring the parameter information of the rectifying tower;
selecting a pump to be started correspondingly according to the rectifying tower parameter information, and entering a total reflux state;
after the total reflux state is operated for a preset time, the normal operation state is entered, and the operation is performed within a preset rectifying tower parameter range;
and obtaining parking instruction information, and selecting a corresponding parking mode to complete the whole process automatic control of the rectifying tower.
2. The method of claim 1, wherein the regulator valve comprises a field valve, a pump outlet valve, and a vapor condensate purge valve, and wherein determining whether the regulator valve and the pump are in place comprises:
judging whether all valves and pumps are put in;
and judging whether the field valve is in place, whether the pump outlet valve is opened, and whether the steam condensate discharging valve is opened.
3. The full process automatic control method of a rectifying column according to claim 1, wherein the regulating valves include a first regulating valve, a second regulating valve, and a third regulating valve, and the always-performed condenser cooling control and column pressure control includes:
and controlling the first regulating valve by using a first controller, controlling the second regulating valve by using a second controller, and opening the third regulating valve under the condition that the pressure of the reflux tank is smaller than a preset threshold, wherein the first regulating valve is used for regulating the condenser, and the second regulating valve and the third regulating valve are used for regulating the reflux tank.
4. The full process automatic control method of a rectifying column according to claim 1, wherein said regulating valve further comprises a fourth regulating valve, and controlling the amount of in and out of said regulating valve with said regulating valve and pump in place comprises:
with the regulator valve and pump in place, the fourth regulator valve is controlled with a third controller.
5. The automatic whole process control method of a rectifying tower according to claim 1, wherein the rectifying tower parameter information comprises rectifying tower liquid material information, reflux tank liquid material information and reboiler temperature information, the pumps comprise a first reflux pump, a second reflux pump, a first tank liquid pump and a second tank liquid pump, the pumps which need to be started are selected according to the rectifying tower parameter information, and entering the total reflux state comprises:
judging whether the first reflux pump or the second reflux pump needs to be started according to the rectifying tower liquid information and the reflux tank liquid information;
a controller for switching the reflux regulating valve and acquiring judgment instruction information;
judging whether the first kettle liquid pump or the second kettle liquid pump needs to be started according to the reboiler temperature information and the judging instruction information;
and entering the total reflux state under the condition of starting the second kettle liquid pump.
6. The automatic overall process control method for a rectifying column according to claim 5, wherein said regulating valves further comprise a fifth regulating valve and a sixth regulating valve, said method further comprising:
after entering the total reflux state, closing a fourth regulating valve, the fifth regulating valve and the sixth regulating valve;
judging whether the total reflux time is longer than the preset time length.
7. The automatic overall process control method of a rectifying column according to claim 1, wherein the rectifying column parameter information further includes rectifying column pressure information, rectifying column temperature information, memory liquid information, and memory pressure information, and the entering the normal operation state after the total reflux state is operated for a preset period of time and operating within a preset rectifying column parameter range includes:
judging whether to start the normal running state or not according to the rectifying tower pressure information, the rectifying tower temperature information, the memory liquid information and the memory pressure information under the condition that the preset time length is longer than the preset time length, and acquiring the normal running instruction information, wherein the memory liquid information comprises first memory liquid information and second memory liquid information, and the memory pressure information comprises first memory pressure information and second memory pressure information;
after entering the normal running state, the regulating valve is controlled by adopting a single-loop automatic control mode so that the rectifying tower runs within the preset rectifying tower parameter range.
8. The full process automatic control method of a rectifying column according to claim 7, characterized in that said method further comprises:
judging whether the pressure information of the rectifying tower, the temperature information of the rectifying tower, the liquid information of a storage device and the pressure information of the storage device are within the preset rectifying tower parameter range or not;
if the stopping time is not within the preset rectifying tower parameter range, judging whether to start a stopping program.
9. The automatic whole process control method of the rectifying tower according to claim 1, wherein the parking modes comprise a first parking mode and a second parking mode, the obtaining parking instruction information, and the selecting the corresponding parking mode comprises:
and obtaining the parking instruction information, and selecting the first parking mode to park or the second parking mode to park, wherein the first parking mode is to reenter the total reflux state, and the second parking mode is to control the rectifying tower in a mode of closing steam.
10. An automatic overall process control system for a rectifying column, comprising:
the acquisition unit is used for acquiring driving instruction information, selecting a control loop and carrying out set value assignment;
the judging unit is used for judging whether the regulating valve and the pump are in place or not and always carrying out condenser cooling control and tower pressure control;
the control unit is used for controlling the inlet and outlet amount of the regulating valve and acquiring the parameter information of the rectifying tower under the condition that the regulating valve and the pump are in place;
the total reflux unit is used for selecting a pump to be started correspondingly according to the rectifying tower parameter information and entering a total reflux state;
the normal operation unit is used for entering a normal operation state after the total reflux state is operated for a preset time period and operating in a preset rectifying tower parameter range;
and the parking unit is used for acquiring parking instruction information and selecting a corresponding parking mode to complete the whole process automatic control of the rectifying tower.
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Citations (33)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3477916A (en) * | 1967-01-04 | 1969-11-11 | Monsanto Co | Method of controlling distillation operation with on-off control response |
| SU1269801A1 (en) * | 1984-08-31 | 1986-11-15 | Филиал Научно-производственного объединения "Леннефтехим" | Apparatus for optimum controlling of rectifying tower unit |
| FR2711546A1 (en) * | 1993-10-27 | 1995-05-05 | Isl Analyse Controle Groupe | Process for controlling a distillation column and plant enabling this process to be used |
| JPH1111915A (en) * | 1997-06-25 | 1999-01-19 | Nippon Sanso Kk | Recovery of argon and device therefor |
| RU66216U1 (en) * | 2007-05-07 | 2007-09-10 | Марат Абдуллович Ураксеев | RECTIFICATION AUTOMATIC CONTROL SYSTEM |
| DE102007038919A1 (en) * | 2007-08-17 | 2009-02-19 | Frank Bahr | Method for manual or automatic control of composition or quality of one of more products removed from head, involves determining new boiling temperature of product in region of product removal, from vapor pressure curve of product |
| CN101465070A (en) * | 2009-01-05 | 2009-06-24 | 南京化工职业技术学院 | Synthetic real training device for chemical industry operation |
| CN101708379A (en) * | 2009-12-29 | 2010-05-19 | 浙江大学 | System for high purity control in high-efficiency energy-saving rectifying process and method thereof |
| CN102060661A (en) * | 2009-11-11 | 2011-05-18 | 兖矿国泰化工有限公司 | Process for operating methanol rectification system |
| CN102183892A (en) * | 2011-05-10 | 2011-09-14 | 上海交通大学 | Load change energy consumption optimizing control method of three-column methanol distillation system |
| CN102627242A (en) * | 2012-04-10 | 2012-08-08 | 安徽广德昌立制动器有限公司 | PWM (Pulse Width Modulation) chopped mode brake control device |
| CN103343147A (en) * | 2013-07-31 | 2013-10-09 | 山东兰典生物科技股份有限公司 | Method for preparing dibutyl succinate from cassava raw materials |
| CN203281060U (en) * | 2013-04-28 | 2013-11-13 | 广德天一电子有限公司 | Distillation condensation recycle device |
| CN103409647A (en) * | 2013-08-12 | 2013-11-27 | 无锡职业技术学院 | High-low temperature compatible metallic lithium distillation equipment and distillation method thereof |
| CN203545916U (en) * | 2013-10-30 | 2014-04-16 | 临沂远博化工有限公司 | Equipment for producing dimethyl sulfate |
| RU2534351C1 (en) * | 2013-11-05 | 2014-11-27 | Валерий Геннадьевич Брусов | Method for automatic control of alcohol column of distiller |
| CN204107075U (en) * | 2014-10-23 | 2015-01-21 | 泰安瑞泰纤维素有限公司 | A kind of Mecl automatic precision distillation unit |
| CN104342205A (en) * | 2013-08-09 | 2015-02-11 | 中国石油天然气股份有限公司 | Ethylene device driving method of front-end deethanization process |
| CN104645896A (en) * | 2015-01-09 | 2015-05-27 | 烟台大学 | Paraphase catalytic reaction-heterogeneous azeotropic distillation system and method |
| CN104714507A (en) * | 2013-12-17 | 2015-06-17 | 天津金牛电源材料有限责任公司 | Automatic anhydrous hydrofluoric acid measuring and feeding system |
| CN205023843U (en) * | 2015-09-23 | 2016-02-10 | 安徽三星化工有限责任公司 | Synthetic ammonia hangs down a press mold recovery unit key parking system |
| CN105498268A (en) * | 2016-01-11 | 2016-04-20 | 天津大学 | Partition plate tower gas phase flow control scheme |
| CN205287677U (en) * | 2015-12-29 | 2016-06-08 | 惠生（南京）清洁能源股份有限公司 | Stabilize condenser device of rectifying column operation |
| CN105797418A (en) * | 2016-05-11 | 2016-07-27 | 广州工程技术职业学院 | Residual liquid circulation method and system in rectifying productive practice |
| CN206033263U (en) * | 2016-08-30 | 2017-03-22 | 青海黄河上游水电开发有限责任公司光伏产业技术分公司 | Recovery unit of chlorosilane among settler emission fluid |
| CN206045457U (en) * | 2016-08-25 | 2017-03-29 | 中石化广州工程有限公司 | A kind of rectifying tower press operation control system |
| CN107261541A (en) * | 2017-08-23 | 2017-10-20 | 广州百兴网络科技有限公司 | A kind of rectifier unit and distillation control method |
| CN107320992A (en) * | 2017-08-23 | 2017-11-07 | 广州百兴网络科技有限公司 | A kind of distilling apparatus and distillation control method |
| CN107930557A (en) * | 2017-12-05 | 2018-04-20 | 江南大学 | A kind of chemical process production capacity optimal control method and device |
| CN108129268A (en) * | 2018-01-12 | 2018-06-08 | 潜江新亿宏有机化工有限公司 | A kind of benzyl alcohol continuous rectification system |
| CN108187362A (en) * | 2018-02-10 | 2018-06-22 | 北京世纪隆博科技有限责任公司 | A kind of rectifying column beacon flint control method |
| CN108392847A (en) * | 2018-06-04 | 2018-08-14 | 叶青 | A kind of fractionation heat-transfer equipment |
| CN209060584U (en) * | 2018-08-16 | 2019-07-05 | 青海黄河上游水电开发有限责任公司新能源分公司 | Rectifying column overall process automatic control device and system |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013101254A1 (en) * | 2011-12-29 | 2013-07-04 | Green Oilfield Environmental Services, Inc. | System and method for treating a contaminated substrate |
-
2018
- 2018-08-16 CN CN201810937461.XA patent/CN108721934B/en active Active
Patent Citations (33)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3477916A (en) * | 1967-01-04 | 1969-11-11 | Monsanto Co | Method of controlling distillation operation with on-off control response |
| SU1269801A1 (en) * | 1984-08-31 | 1986-11-15 | Филиал Научно-производственного объединения "Леннефтехим" | Apparatus for optimum controlling of rectifying tower unit |
| FR2711546A1 (en) * | 1993-10-27 | 1995-05-05 | Isl Analyse Controle Groupe | Process for controlling a distillation column and plant enabling this process to be used |
| JPH1111915A (en) * | 1997-06-25 | 1999-01-19 | Nippon Sanso Kk | Recovery of argon and device therefor |
| RU66216U1 (en) * | 2007-05-07 | 2007-09-10 | Марат Абдуллович Ураксеев | RECTIFICATION AUTOMATIC CONTROL SYSTEM |
| DE102007038919A1 (en) * | 2007-08-17 | 2009-02-19 | Frank Bahr | Method for manual or automatic control of composition or quality of one of more products removed from head, involves determining new boiling temperature of product in region of product removal, from vapor pressure curve of product |
| CN101465070A (en) * | 2009-01-05 | 2009-06-24 | 南京化工职业技术学院 | Synthetic real training device for chemical industry operation |
| CN102060661A (en) * | 2009-11-11 | 2011-05-18 | 兖矿国泰化工有限公司 | Process for operating methanol rectification system |
| CN101708379A (en) * | 2009-12-29 | 2010-05-19 | 浙江大学 | System for high purity control in high-efficiency energy-saving rectifying process and method thereof |
| CN102183892A (en) * | 2011-05-10 | 2011-09-14 | 上海交通大学 | Load change energy consumption optimizing control method of three-column methanol distillation system |
| CN102627242A (en) * | 2012-04-10 | 2012-08-08 | 安徽广德昌立制动器有限公司 | PWM (Pulse Width Modulation) chopped mode brake control device |
| CN203281060U (en) * | 2013-04-28 | 2013-11-13 | 广德天一电子有限公司 | Distillation condensation recycle device |
| CN103343147A (en) * | 2013-07-31 | 2013-10-09 | 山东兰典生物科技股份有限公司 | Method for preparing dibutyl succinate from cassava raw materials |
| CN104342205A (en) * | 2013-08-09 | 2015-02-11 | 中国石油天然气股份有限公司 | Ethylene device driving method of front-end deethanization process |
| CN103409647A (en) * | 2013-08-12 | 2013-11-27 | 无锡职业技术学院 | High-low temperature compatible metallic lithium distillation equipment and distillation method thereof |
| CN203545916U (en) * | 2013-10-30 | 2014-04-16 | 临沂远博化工有限公司 | Equipment for producing dimethyl sulfate |
| RU2534351C1 (en) * | 2013-11-05 | 2014-11-27 | Валерий Геннадьевич Брусов | Method for automatic control of alcohol column of distiller |
| CN104714507A (en) * | 2013-12-17 | 2015-06-17 | 天津金牛电源材料有限责任公司 | Automatic anhydrous hydrofluoric acid measuring and feeding system |
| CN204107075U (en) * | 2014-10-23 | 2015-01-21 | 泰安瑞泰纤维素有限公司 | A kind of Mecl automatic precision distillation unit |
| CN104645896A (en) * | 2015-01-09 | 2015-05-27 | 烟台大学 | Paraphase catalytic reaction-heterogeneous azeotropic distillation system and method |
| CN205023843U (en) * | 2015-09-23 | 2016-02-10 | 安徽三星化工有限责任公司 | Synthetic ammonia hangs down a press mold recovery unit key parking system |
| CN205287677U (en) * | 2015-12-29 | 2016-06-08 | 惠生（南京）清洁能源股份有限公司 | Stabilize condenser device of rectifying column operation |
| CN105498268A (en) * | 2016-01-11 | 2016-04-20 | 天津大学 | Partition plate tower gas phase flow control scheme |
| CN105797418A (en) * | 2016-05-11 | 2016-07-27 | 广州工程技术职业学院 | Residual liquid circulation method and system in rectifying productive practice |
| CN206045457U (en) * | 2016-08-25 | 2017-03-29 | 中石化广州工程有限公司 | A kind of rectifying tower press operation control system |
| CN206033263U (en) * | 2016-08-30 | 2017-03-22 | 青海黄河上游水电开发有限责任公司光伏产业技术分公司 | Recovery unit of chlorosilane among settler emission fluid |
| CN107261541A (en) * | 2017-08-23 | 2017-10-20 | 广州百兴网络科技有限公司 | A kind of rectifier unit and distillation control method |
| CN107320992A (en) * | 2017-08-23 | 2017-11-07 | 广州百兴网络科技有限公司 | A kind of distilling apparatus and distillation control method |
| CN107930557A (en) * | 2017-12-05 | 2018-04-20 | 江南大学 | A kind of chemical process production capacity optimal control method and device |
| CN108129268A (en) * | 2018-01-12 | 2018-06-08 | 潜江新亿宏有机化工有限公司 | A kind of benzyl alcohol continuous rectification system |
| CN108187362A (en) * | 2018-02-10 | 2018-06-22 | 北京世纪隆博科技有限责任公司 | A kind of rectifying column beacon flint control method |
| CN108392847A (en) * | 2018-06-04 | 2018-08-14 | 叶青 | A kind of fractionation heat-transfer equipment |
| CN209060584U (en) * | 2018-08-16 | 2019-07-05 | 青海黄河上游水电开发有限责任公司新能源分公司 | Rectifying column overall process automatic control device and system |
Non-Patent Citations (6)
| Title |
|---|
| Invariant rectifying-stripping curves for targeting minimum energy and feed location in distillation;Santanu Bandyopadhyay;Computers and Chemical Engineering;全文 * |
| 二氧化碳液化装置与碳捕集研究;蒋旭;厉彦忠;张五常;周小川;厉以宁;蒋明;;气体分离(第04期);全文 * |
| 基于双组分常压精馏装置实训项目的开发;贾利侠;;云南化工(第07期);全文 * |
| 改良西门子法生产多晶硅精馏工艺的改进;刘刚;秦榕;刘生章;王舒娅;;有色金属(冶炼部分);20130912(09);全文 * |
| 精馏过程的专家控制;胡泽新,蒋慰孙;信息与控制(第02期);全文 * |
| 西门子PCS7在蒸发器控制系统的应用;麦艳红;;科技通报;20130415(04);全文 * |
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