Automatic control method and device for straw pyrolysis gasification

Abstract

The invention provides an automatic control method and device for straw pyrolysis gasification. The automatic control method and device are applied to straw pyrolysis gasification equipment. The straw pyrolysis gasification equipment comprises a feeding system, and the automatic control method for straw pyrolysis gasification comprises the steps that after straw pyrolysis gasification equipment is powered on, an ignition step and a hearth heating step are sequentially executed; a hearth temperature is obtained; and when the hearth temperature reaches a preset feeding temperature interval for the first time, an automatic feeding step is executed to start the feeding system, the feeding speed is controlled, and the heat balance of the system is maintained by carbon residues discharged from a residue discharging opening of the reaction kettle. The automatic control method is applied to the straw pyrolysis and gasification equipment, so that the straw pyrolysis and gasification equipment can complete automatic starting, automatic stopping and automatic production control, and the labor cost and the operation difficulty are reduced.

Description

technical field [0001] The invention relates to the technical field of automatic control, in particular to an automatic control method and device for straw pyrolysis and gasification. Background technique [0002] Every year on the earth, a large amount of straw, woody and other biomass is produced, most of which have not been well utilized. Every year during the grain harvest season, random burning of straw occurs, causing great pollution to the atmospheric environment. On the other hand, there are a large number of coal-fired boilers burning coal, and the exhaust gas often does not meet the requirements, which will pollute the atmosphere and aggravate the severity of smog. If a large amount of straw can be fully utilized for energy to partially replace coal burning, it will not only reduce the random burning of straw but also reduce the use of coal, realize the transformation of straw into treasure and promote the improvement of the atmospheric environment. [0003] Nowad...

AI Technical Summary

Problems solved by technology

As a large agricultural country, the recycling rate of straw in China is currently low, resulting in a great waste of resources and environmental pollution. It is an urgent need to explore more convenient and effective crop straw utilization technologies.

Although the technology of pyrolysis and gasification is relatively mature, the efficiency is not high, and the labor cost and operation difficulty are relatively large, which cannot meet the current demand.

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