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Gas-fired boiler cooperative operation method based on accurate control technology

A technology of gas boiler and control technology, which is applied in the direction of control system, program control, general control system, etc., and can solve the problems that the type of gas cabinet cannot meet the regulation of surplus gas fluctuations, and the gas cabinet has a large volume.

Active Publication Date: 2020-12-11
NANJING HANHUA FLUID TECH CO LTD
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Problems solved by technology

However, due to the large volume of gas tanks in steel plants, generally 100,000 m 3 , or even 300,000 m 3 , the steel plant system requires stable operation; therefore, the existing gas cabinet types in the steel plant cannot meet the demand for regulating the fluctuation of surplus gas

Method used

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  • Gas-fired boiler cooperative operation method based on accurate control technology
  • Gas-fired boiler cooperative operation method based on accurate control technology
  • Gas-fired boiler cooperative operation method based on accurate control technology

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Embodiment Construction

[0079] The regulation process of the surplus gas in the buffer system is as follows: figure 2 shown. figure 2 Listed in the "surplus gas volume change prediction value", "surplus gas smooth zone", "surplus gas ladder region" and "small gas tank rectification - sawtooth" gas flow rectification matching control process.

[0080] As a gas resource handling device, the gas tank has the function of "looper", and uses it to handle the small gas flow (zigzag shape) with frequent fluctuations that deviate from the mean value; It absorbs that part of the large gas flow that rises and falls in a stepped shape (smooth band and stepped shape). As a throughput device, the gas tank is characterized by its small throughput capacity, adapting to frequent fluctuations, small volume and short time, and good effect of adjusting the pressure of the pipe network. As a buffer user, the gas-fired boiler is characterized by its large buffer capacity, adapting to fluctuations of stability, large v...

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Abstract

The invention discloses a gas-fired boiler cooperative operation method based on an accurate control technology, and solves the problems of high boiler fuel consumption, low boiler unit operation efficiency and poor surplus gas power generation economy caused by lack of an effective surplus gas distribution and scheduling system among boilers in an existing mode of cooperative operation of multiple boilers. According to the method, the surplus coal gas of the steel mill is predicted based on a heuristic rule, and then the boiler group is effectively prevented from passively receiving the frequently-changed surplus coal gas by adopting accurately-controlled self-adaptive rectification filtering and efficient utilization based on the surplus coal gas 'stable zone-ladder-shaped domain-zigzagscheduling thought' according to a prediction result. According to the gas-fired boiler cooperative operation method based on the precise control technology, the serious influence of frequent and severe fluctuation of surplus gas pressure on a generator set can be avoided, cooperative operation between boiler groups and efficient utilization of gas are achieved, the boiler operation efficiency andthe generator set power generation capacity are improved, and power generation burnup is reduced.

Description

technical field [0001] The invention belongs to the technical field of industrial artificial intelligence, and in particular relates to a method that can solve the serious impact of frequent and violent fluctuations in excess gas pressure on generator sets, can realize coordinated operation among boiler groups and efficient utilization of gas, and effectively improve boiler operation efficiency and efficiency. A coordinated operation method of gas boilers based on precise control technology to reduce the power generation of the unit and reduce the fuel consumption of power generation. Background technique [0002] Due to the inevitable cyclical production phenomena in various types of gas generation and gas consumption in iron and steel enterprises, such as the influence of the blast furnace hot blast stove combustion period and air supply period, the converter smelting cycle, and the different production schedules of the rolling heating furnace, etc. As a result, the proces...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B19/418F22B33/18F22B35/00
CPCG05B19/418F22B33/18F22B35/008G05B2219/2639
Inventor 杨靖辉张朋刚耿胜松
Owner NANJING HANHUA FLUID TECH CO LTD
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