Unlock instant, AI-driven research and patent intelligence for your innovation.

Whole-process coordinated control system and method for plasma cracking coal-to-acetylene production process

A technology for coordinating control systems and plasmas, applied in general control systems, control/regulation systems, program control, etc., can solve problems such as not functioning well, poor system scalability, etc., and achieve rapid response and reduced response time poor effect

Active Publication Date: 2020-06-23
ZHEJIANG UNIV
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Traditional centralized control and decentralized control have a simple structure, poor system scalability, and centralized control has extremely high performance requirements for the controller, especially in large systems with strong coupling. When the system coupling correlation is strong, the decentralized control system doesn't work well
[0006] The whole-process production of coal-to-acetylene is a complex and multivariable controlled object with uncertainty. Although each section has its own regulation system, considering the characteristics of joint operation, they must maintain a coordinated operation mode, so that The whole-process production equipment of coal-to-acetylene can adapt to the variable load and multi-disturbance production conditions of the system as soon as possible, and at the same time ensure the safe and stable operation of the system. It is often not the optimal control effect of the whole process, so it is very important to design a coordination scheduling system for the whole process of coal-to-acetylene

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Whole-process coordinated control system and method for plasma cracking coal-to-acetylene production process
  • Whole-process coordinated control system and method for plasma cracking coal-to-acetylene production process
  • Whole-process coordinated control system and method for plasma cracking coal-to-acetylene production process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0184] Plasma cracking is performed on a mixed coal type A, and the expert control scheme, MPC parameters and required defined parameters are obtained from the test in the commissioning stage, as shown in Table 1.

[0185] Table 1 is the information of the controlled object (expert control scheme, MPC parameters) defined in Example 1

[0186] object type serial number Q(％) Q D (％)

[0187] The simulation results are as follows:

[0188] According to the result of forward coordination, the set of MPC parameters selected by the coordinated control system is set 3, and its working point is (the unit is shown in the table) [Q D , Q U ]=[8, 13], the output product index is [T D , P D ]=[110, 0.12], the final expert control scheme remains at scheme 5, which controls the reactor to output plasma cracking gas with an acetylene concentration of 13% (molar concentration, the same below). For the convenience of comparison, the simulation results of this example are summ...

Embodiment 2

[0193] Plasma cracking is performed on a mixed coal type B, and the expert control scheme, MPC parameters and required defined parameters are obtained from the test in the debugging stage, as shown in Table 3.

[0194] Table 3 is the controlled object (expert control scheme, MPC parameters) information defined in Example 1

[0195]

[0196]

[0197] The simulation results are as follows:

[0198] According to the result of forward coordination, none of the MPC parameter sets selected by the coordinated control system meet the evaluation criteria in the evaluation unit. Therefore, reverse coordination is performed. In this example, a reverse coordination module and a flag for judging whether reverse coordination is required are added.

[0199] Finally, the set of MPC parameters selected by the coordinated control system is set 2, and its working point is (the unit is shown in the table) [Q D , Q U ]=[8, 10], the output product index is [T D , P D ]=[105, 0.1], the f...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a whole process coordinated control system for the producing process of coal pyrolysis to acetylene in plasma. The system comprises a data real-time acquisition unit for real-time collecting the production data in the producing process of coal pyrolysis to acetylene in plasma, an advanced control unit comprising an expert control module for controlling a reaction section and a model predictive control module for controlling a separation section, a coordinated control unit for coordinating the expert control plan of the expert control module and the MPC parameter of themodel predictive control module according to the evaluation result of a current production state, and an evaluation unit for evaluating the current production status according to the production data collected by the data real-time acquisition unit. The invention also discloses a method for performing whole process coordinated control based on the whole process coordinated control system. The system and the method achieves the effect of the coordinated control of the upstream and downstream sections in the producing process of coal pyrolysis to acetylene in plasma, and solves the problem that the dynamic response characteristics of the upstream and downstream sections are greatly different in the process of acetylene production by the coal or the like.

Description

technical field [0001] The invention relates to the field of chemical process control, in particular to a system and method for the whole-process coordinated control of the plasma cracking coal-to-acetylene production process. Background technique [0002] Acetylene is an important basic chemical raw material. At present, the method for producing large quantities of acetylene in industry is mainly the hydrolysis of calcium carbide. However, this method has a long process flow, high requirements on production equipment, high energy consumption in the production process, a large amount of electric energy and high-quality semi-coke, which is costly and discharges waste water, poisonous gas, carbide slag and other pollutants. [0003] Plasma is a non-condensed system composed of a large number of charged particles. It is the fourth state of matter. Its basic components are: negatively charged particles (such as electrons), positively charged particles (such as ions) and neutral...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): G05B19/418
CPCG05B19/41875G05B2219/32015Y02P90/02
Inventor 荣冈曹文康冯毅萍任其龙陈新志何潮洪吴忠标陈丰秋
Owner ZHEJIANG UNIV