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Coordinated predictive control method for post-combustion CO2 capturing coal-fired power generation system

A technology for predictive control and power generation systems, applied in adaptive control, general control systems, control/regulation systems, etc., and can solve problems such as rare control research

Active Publication Date: 2018-12-07
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For integrated post-combustion CO 2 As far as the capture coal-fired power generation system is concerned, its characteristics are quite different from those of the independent system, and there are few studies on its control

Method used

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  • Coordinated predictive control method for post-combustion CO2 capturing coal-fired power generation system
  • Coordinated predictive control method for post-combustion CO2 capturing coal-fired power generation system
  • Coordinated predictive control method for post-combustion CO2 capturing coal-fired power generation system

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Embodiment Construction

[0045] Such as figure 2 As shown, a post-combustion CO 2 The coordinated predictive control method for capturing coal-fired power generation system includes the following steps:

[0046] (1) The coal-fired generating unit furnace system is constructed with the command of coal feed, steam turbine valve opening and water supply valve opening as the operating variables, and the values ​​of power generation, main steam pressure and intermediate point enthalpy are 3×3 of the controlled variables Multivariable Predictive Control Systems. Consider CO during the design process 2 The steam extraction flow of the capture system from the connection between the medium and low pressure cylinders of the turbine is used as a disturbance signal;

[0047] (2) is post-combustion CO based on chemisorption 2 The structure of the capture system takes lean liquid flow and turbine extraction flow as operating variables, and the CO 2 A 2×2 multivariable predictive control system with capture ra...

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Abstract

The invention discloses a coordinated predictive control method for a post-combustion CO2 capturing coal-fired power generation system, which can realize mutual coordination and deep combination of aturbine-boiler system and a carbon capturing system of a coal-fired power plant, improve the flexible operation quality and give full play to the efficiency in power generation and carbon emission reduction.

Description

technical field [0001] The invention relates to the technical field of thermal process control, in particular to a post-combustion CO 2 Coordinated predictive control method for capture coal-fired power generation system. Background technique [0002] With the increasing severity of the greenhouse effect and related climate and ecological problems, reducing CO emissions 2 It has become a key measure for the international community to deal with climate change. As the main equipment for power supply, the coal-fired generating set is the CO 2 The most stable and concentrated emission source, its CO 2 Capture is recognized by many authoritative organizations as the realization of large-scale CO in the next 30 years 2 The most direct and effective technical means to reduce emissions. [0003] CO in existing coal-fired power generation systems 2 In capture technology, post-combustion CO2 based on chemical absorption 2 Capture technology separates CO directly from flue gas ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B13/04
CPCG05B13/042
Inventor 吴啸沈炯李益国
Owner SOUTHEAST UNIV
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