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A method for controlling a biomass gasifier

A control method and gasifier technology, applied in temperature control, control/regulation system, non-electric variable control, etc., can solve problems such as low calorific value, harsh working environment, unstable gas production, etc., and achieve robustness Strong, the effect of improving the quality of gas production

Active Publication Date: 2021-06-25
BEIJING UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the production line of biomass gasifiers in my country has high labor intensity, poor working environment, unstable gas production and low calorific value.

Method used

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  • A method for controlling a biomass gasifier
  • A method for controlling a biomass gasifier

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Embodiment Construction

[0012] The present invention will be further described below in conjunction with the accompanying drawings.

[0013] As shown in the figure, the biomass raw material enters the gasification furnace 1 through the feed port, and contacts with the gasification agent introduced into the furnace through the inlet valve 2. In the gasification furnace, it undergoes complex physical and chemical reactions to generate gas containing carbon monoxide and hydrogen. , methane and other combustible gases and nitrogen, carbon dioxide mixed gas, the mixed gas produced by the frequency conversion Roots blower 4 is extracted from the bottom of the gasifier, after the purification system, most of the mixed gas enters the subsequent gas storage device or other links through the pipeline, less Part of it is burnt at an open flame for the detection of gas calorific value.

[0014] When controlling the temperature in the furnace, multiple sensors 3 around the furnace transmit the temperature to the ...

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Abstract

A control method for a biomass gasifier relates to the field of automatic control. The applied devices mainly include: downdraft biomass gasifier, gasification agent inlet valve, multiple temperature sensors around the furnace, Roots blower, temperature sensor at the permanent flame, data acquisition camera, mainly emphasizing the combination of camera and temperature sensor In the application of detecting the calorific value information of combustible gas produced, the concept of calorific value coefficient is introduced at the same time, and the fuzzy-PID composite controller with Smith estimation is used in the temperature loop control to keep the temperature in the downdraft gasifier in the best gasification state .

Description

technical field [0001] The invention relates to the field of automatic control, in particular to a control method for a biomass gasification furnace. Background technique [0002] With the development of economy and society, fossil fuels are becoming increasingly depleted and environmental pollution is serious. my country's biomass energy (such as rice straw, cotton firewood, and tree branches) is very rich. Biomass gasifiers use straw, cotton firewood and other agricultural and forestry biomass energy as raw materials to produce combustible gas, which can not only alleviate the energy shortage, but also reduce environmental pollution. degree of pollution. At present, the production lines of biomass gasifiers in my country have high labor intensity, poor working environment, unstable gas production and low calorific value. The invention points out a control scheme of a biomass gasification furnace, which can improve gas production stability and gasification efficiency. Co...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05D23/00C10J3/72
CPCC10J3/723
Inventor 许东来胡旭东
Owner BEIJING UNIV OF TECH