CN113528192A - Intelligent regulating system for coal water slurry gasification - Google Patents
Intelligent regulating system for coal water slurry gasification Download PDFInfo
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- CN113528192A CN113528192A CN202110729860.9A CN202110729860A CN113528192A CN 113528192 A CN113528192 A CN 113528192A CN 202110729860 A CN202110729860 A CN 202110729860A CN 113528192 A CN113528192 A CN 113528192A
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- detection module
- actuator
- coal
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- controller
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
- C10J3/72—Other features
- C10J3/723—Controlling or regulating the gasification process
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
- C10J3/46—Gasification of granular or pulverulent flues in suspension
- C10J3/48—Apparatus; Plants
Abstract
The invention relates to the technical field of coal water slurry adjustment, and discloses an intelligent coal water slurry gasification adjustment system which comprises a first detection module, a second detection module and a third detection module, wherein the first detection module, the second detection module and the third detection module are respectively provided with an output end and a feedback input end, and the intelligent coal water slurry gasification adjustment system is characterized in that the first detection module outputs a first measured value a1, the second detection module outputs a second measured value a2, the first detection module, the second detection module and the third detection module are respectively connected with a comparison module, the comparison module comprises a comparator, the output end of the comparator is connected with a controller, an actuator and a controlled object, and the comparison module is connected with a decentralized control module. The invention automatically processes the condition that the single cylinder or double cylinders do not output in a short time of the high-pressure coal slurry pump, has high automation degree, better control accuracy and timeliness and good safety, and effectively avoids catalyst failure and accidental shutdown accidents of the gasification furnace caused by coal quality change.
Description
Technical Field
The invention relates to the technical field of coal water slurry regulation, in particular to an intelligent coal water slurry gasification regulating system.
Background
The coal water slurry gasification process is a popular coal gasification technology at home and abroad at present, wherein the AP coal water slurry gasification process, a multi-nozzle opposed coal water slurry pressurized gasification technology, a Jinhua furnace gasification technology and the like are typical, and the coal water slurry gasification process has the characteristics of wide coal type adaptability, high gasification pressure, high production capacity, high gasification efficiency, less pollution and the like.
At present, the treatment capacity of a domestic coal water slurry gasification single furnace reaches 4000 tons/day, the coal chemical industry has the characteristic of single set and single series, the maximum risk of the characteristic is the increase of the starting and stopping times, the more the starting and stopping times are, the greater the loss is, the more stable the system is, and the benefit is obvious.
One of the main reasons for stopping the gasification furnace is the high-speed skip of the oxygen-coal ratio caused by the peroxide. At present, no good countermeasure for the reason exists in China, the rotating speed of the high-pressure coal slurry pump is still forcibly increased by adopting manual measures, and manual operation often causes the stop of the gasification furnace due to time lag, so that the production is greatly influenced. And when the quality of the coal slurry entering the gasification furnace changes, the outlet temperature of the gasification furnace and the liquid level of the chilling chamber change greatly, and the gasification furnace is often stopped accidentally due to unfavorable monitoring of operators or operation lag, so that the requirements of people cannot be met.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides an intelligent regulating system for coal water slurry gasification, which solves the problems of catalyst failure and accidental shutdown accidents of a gasification furnace caused by manual regulation lag, coal quality change and the like of the conventional coal water slurry gasification regulating system.
(II) technical scheme
In order to achieve the purpose, the invention provides the following technical scheme:
the coal water slurry gasification intelligent regulating system comprises a first detection module, a second detection module and a third detection module, wherein the first detection module, the second detection module and the third detection module are respectively provided with an output end and a feedback input end, wherein the first detection module outputs a first measurement a1 and the second detection module outputs a second measurement a2, the first detection module, the second detection module and the third detection module are all connected with a comparison module, the comparison module comprises a comparator, the output end of the comparator is connected with a controller, an actuator and a controlled object, the comparison module is connected with a decentralized control module, the output end of the actuator outputs control quantity and is connected with the feedback input end of the second detection module, the input end of the controlled object is used for receiving the control quantity and the interference action, and the output end of the controlled object outputs the adjusted parameter and is connected with the feedback input end of the first detection module.
As a further scheme of the present invention, the controller includes a distributed control system DCS, the controller includes a first controller and a second controller, the actuator includes a frequency converter, the actuator includes a first actuator, an actuator 2a and an actuator 2b, the second controller is connected to the actuator 2a and the actuator 2b, the first actuator, the actuator 2a and the actuator 2b are respectively connected to a first execution object, an execution object 2a and an execution object 2b, the first execution object is a coal slurry pump rotation speed regulator, the execution object 2a is a gasifier water inlet valve, the actuator 2b is a gasifier liquid level regulating valve, the first actuator is connected to a first bypass switch, the actuator 2a is connected to a second bypass switch, and an output control quantity of the actuator 2a is connected to a feedback input end of a third detection module.
Further, the controlled object comprises a high-pressure coal slurry pump, the first detection module comprises an actual flow transmitter, the second detection module comprises a theoretical flow transmitter, the comparator comprises a first comparator and a second comparator, the first comparator is connected with the first detection module, the second detection module and the first controller, and the second comparator is connected with the third detection module and the second controller.
On the basis of the scheme, the comparator comprises a DCS internal comparison operation module, the control quantity comprises the rotating speed of the frequency converter, the controlled quantity comprises the coal slurry flow, the data input by the input end of the comparator comprises given quantity, a1 and a2, and the given quantity comprises a coal slurry flow allowable fluctuation value.
Further, the third detection module comprises a liquid level transmitter and a temperature sensor, and the output values of the liquid level transmitter and the temperature sensor are c1 and c2 respectively.
On the basis of the scheme, the output control quantity of the output end of the actuator is connected with the feedback input end of the third detection module.
As still a further aspect of the present invention, the controller includes a liquid level regulating valve and a flow rate regulating valve.
(III) advantageous effects
Compared with the prior art, the invention provides an intelligent coal water slurry gasification regulating system, which has the following beneficial effects:
1. the invention can automatically process the condition that a single cylinder or double cylinders do not run in a short time of the high-pressure coal slurry pump, thereby ensuring that the gasification furnace can not be stopped accidentally due to the high oxygen-coal ratio on the premise of safe operation, intelligently adjusting the flow of the chilling water and the black water entering and exiting the gasification furnace when the liquid level of the chilling chamber of the gasification furnace and the temperature of the gas phase and the liquid phase change, reducing the water carrying of the process gas of the gasification furnace and accidental stop, and solving the defects of low automation degree, poor control accuracy and timeliness and poor safety in the automatic control system of the traditional gasification furnace.
2. In the present invention, a comparator compares and outputs a deviation based on a given amount, a first measured value a1 output from the first detection block, and a second measured value a2 output from the second detection block.
3. The invention can overcome the hysteresis condition of manual adjustment, and has good real-time adjustment and no time delay.
4. The invention has high automation degree, better control accuracy and timeliness and good safety, and effectively avoids catalyst failure and accidental shutdown accidents of the gasification furnace caused by coal quality change.
Drawings
Fig. 1 is a schematic flow structure diagram of a coal water slurry gasification intelligent regulation system provided by the invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, the coal water slurry gasification intelligent regulation system comprises a first detection module, a second detection module and a third detection module, wherein the first detection module, the second detection module and the third detection module are respectively provided with an output end and a feedback input end, the first detection module outputs a first measured value a1, the second detection module outputs a second measured value a2, the first detection module, the second detection module and the third detection module are respectively connected with a comparison module, the comparison module comprises a comparator, the output end of the comparator is connected with a controller, an actuator and a controlled object, the comparison module is connected with a decentralized control module, the output end of the actuator outputs a control quantity and is connected with the feedback input end of the second detection module, the input end of the controlled object is used for receiving the control quantity and an interference effect, the output end of the controlled object outputs a regulated parameter which is connected with the feedback input end of the first detection module, the automatic control system has the advantages of high automation degree, good control accuracy and timeliness and good safety, and effectively avoids catalyst failure and accidental shutdown accidents of the gasification furnace caused by coal quality change.
The controller comprises a Distributed Control System (DCS), the controller comprises a first controller and a second controller actuator, the first controller and the second controller actuator comprise frequency converters, the actuators comprise a first actuator, an actuator 2a and an actuator 2b, the second controller is connected with the actuator 2a and the actuator 2b, the first actuator, the actuator 2a and the actuator 2b are respectively connected with a first execution object, an execution object 2a and an execution object 2b, the first execution object is a coal slurry pump rotating speed regulator, the execution object 2a is a gasification furnace water inlet valve, the actuator 2b is a gasification furnace liquid level regulating valve, the first actuator is connected with a first bypass switch, the actuator 2a is connected with a second bypass switch, the output control quantity of the output end of the actuator 2a is connected with the feedback input end of a third detection module, the hysteresis condition of manual regulation is overcome, the regulation real-time is good, no time delay exists, the controlled object comprises a high-pressure coal slurry pump, the first detection module comprises an actual flow transmitter, the second detection module comprises a theoretical flow transmitter, the comparator comprises a first comparator and a second comparator, the first comparator is connected with the first detection module, the second detection module and the first controller, the second comparator is connected with the third detection module and the second controller, the comparator comprises a DCS internal comparison operation module, the control quantity comprises the rotating speed of a frequency converter, the controlled quantity comprises the coal slurry flow, the data input by the input end of the comparator comprises a given quantity, a1 and a2, the given quantity comprises a coal slurry flow allowable fluctuation value, the comparator compares and outputs deviation based on the given quantity, a first measured value a1 output by the first detection module and a second measured value a2 output by the second detection module, and the condition that a single cylinder or double cylinders do not generate the quantity in the high-pressure coal slurry pump is automatically processed, therefore, the gasifier can not be stopped accidentally due to the high oxygen-coal ratio on the premise of safe operation, when the liquid level of the chilling chamber of the gasifier and the temperature of the gas phase and the liquid phase change, the flow of chilling water and black water entering and exiting the gasifier are intelligently adjusted, the process gas carrying water of the gasifier and accidental stopping are reduced, and the defects of low automation degree, poor control accuracy and timeliness and poor safety in the existing gasifier automatic control system are overcome.
In the invention, the third detection module comprises a liquid level transmitter and a temperature sensor, the output values of the liquid level transmitter and the temperature sensor are respectively c1 and c2, the output end of the actuator outputs control quantity which is connected with the feedback input end of the third detection module, and the controller comprises a liquid level regulating valve and a flow regulating valve.
The working principle is as follows: the first actuator executes a signal of the first controller, the second comparator compares a measured value c1 output by the third detection module with a measured value c2 output by the third detection module and outputs a deviation, the second controller, the actuator 2a and the actuator 2b, and the execution object 2a and the execution object 2b are sequentially connected to the output end of the second comparator, the actuator 2a inputs an execution signal to the execution object 2a according to the signal output by the comparator and feedback values of the actuator 2a and the third detector c1, the controller 2 transmits the other signal to the actuator 2b, and the actuator 2b transmits the signal to the execution object 2 b.
In the description herein, it is noted that relational terms such as first and second, and the like, are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. Coal slurry gasification intelligent regulation system, including first detection module, second detection module and third detection module, first detection module, second detection module and third detection module all are equipped with output and feedback input, its characterized in that, first measured value a1 is exported to first detection module, and second detection module exports second measured value a2, first detection module, second detection module and third detection module all are connected with comparison module, and comparison module includes the comparator, and the output of comparator is connected with controller, executor and controlled object, comparison module is connected with the distributed control module, the output controlled variable of executor is connected with the feedback input of second detection module, the output of controlled object is transferred the parameter and is connected with the feedback input of first detection module.
2. The coal water slurry gasification intelligent regulation system of claim 1, wherein the controller comprises a Distributed Control System (DCS), the controller comprises a first controller and a second controller, the actuator comprises a frequency converter, the actuator comprises a first actuator, an actuator 2a and an actuator 2b, the second controller is connected with the actuator 2a and the actuator 2b, the first actuator, the actuator 2a and the actuator 2b are respectively connected with a first execution object, an execution object 2a and an execution object 2b, the first execution object is a coal slurry pump rotating speed regulator, the execution object 2a is a gasification furnace water inlet valve, the actuator 2b is a gasification furnace liquid level regulating valve, the first actuator is connected with a first bypass switch, the actuator 2a is connected with a second bypass switch, and the output control quantity of the output end of the actuator 2a is connected with the feedback input end of a third detection module.
3. The coal water slurry gasification intelligent regulating system according to claim 2, wherein the controlled object comprises a high pressure coal slurry pump, the first detection module comprises an actual flow transmitter, the second detection module comprises a theoretical flow transmitter, the comparator comprises a first comparator and a second comparator, the first comparator is connected with the first detection module, the second detection module and the first controller, and the second comparator is connected with the third detection module and the second controller.
4. The coal-water slurry gasification intelligent regulation system according to claim 3, wherein the comparator comprises a DCS internal comparison operation module, the control quantity comprises the rotation speed of a frequency converter, the controlled quantity comprises the coal slurry flow, the data input by the input end of the comparator comprises a given quantity, a1 and a2, and the given quantity comprises a coal slurry flow allowable fluctuation value.
5. The coal-water slurry gasification intelligent regulation system of claim 4, wherein the third detection module comprises a liquid level transmitter and a temperature sensor, and the output values of the liquid level transmitter and the temperature sensor are c1 and c2 respectively.
6. The coal-water slurry gasification intelligent regulating system according to claim 4, wherein the output end of the actuator outputs a control quantity which is connected with the feedback input end of the third detection module.
7. The coal-water slurry gasification intelligent regulation system of claim 1 wherein the controller comprises a liquid level regulating valve and a flow regulating valve.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110729860.9A CN113528192A (en) | 2021-06-29 | 2021-06-29 | Intelligent regulating system for coal water slurry gasification |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110729860.9A CN113528192A (en) | 2021-06-29 | 2021-06-29 | Intelligent regulating system for coal water slurry gasification |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA1074888A (en) * | 1975-12-04 | 1980-04-01 | Dr. C. Otto And Company Gesellschaft Mit Beschrankter Haftung | Control system for fine-particle pressure gasification plant |
| CN101807069A (en) * | 2010-03-12 | 2010-08-18 | 西北化工研究院 | Control system for coal gasification technical process of wet entrained flow bed |
| US20120085028A1 (en) * | 2010-10-08 | 2012-04-12 | General Electric Company | Gasifier monitor and control system |
| CN103176456A (en) * | 2013-02-26 | 2013-06-26 | 奎屯锦疆化工有限公司 | Automatic coal slurry tracking system |
| CN103309321A (en) * | 2013-06-03 | 2013-09-18 | 杭州电子科技大学 | Cold state simulation system applied to coal chemical industry |
-
2021
- 2021-06-29 CN CN202110729860.9A patent/CN113528192A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA1074888A (en) * | 1975-12-04 | 1980-04-01 | Dr. C. Otto And Company Gesellschaft Mit Beschrankter Haftung | Control system for fine-particle pressure gasification plant |
| CN101807069A (en) * | 2010-03-12 | 2010-08-18 | 西北化工研究院 | Control system for coal gasification technical process of wet entrained flow bed |
| US20120085028A1 (en) * | 2010-10-08 | 2012-04-12 | General Electric Company | Gasifier monitor and control system |
| CN103176456A (en) * | 2013-02-26 | 2013-06-26 | 奎屯锦疆化工有限公司 | Automatic coal slurry tracking system |
| CN103309321A (en) * | 2013-06-03 | 2013-09-18 | 杭州电子科技大学 | Cold state simulation system applied to coal chemical industry |
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Application publication date: 20211022 |
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