Reversed-flow high-temperature fixed bed gasifier and process method thereof

Abstract

The invention discloses a reversed-flow high-temperature fixed bed gasifier and a process method thereof. The reversed-flow high-temperature fixed bed gasifier comprises a gasifier body, a hydraulic filtering device, a high-temperature steam preparation device, a slag collecting device, a feeding device, a heating carbon rod, a sampling tube, a PLC (programmable logic controller) device, a fire grate, a fire grate ash sweeping device, a temperature monitoring system and the like. The process method includes a material pretreatment method, a continuous automatic feeding method and gasificationreaction process introduction. Biomasses, household waste, medical waste and the like can be gasified by the gasifier, gasified gas generated by the gasifier has the advantages of hydrogen-rich property, low tar, high calorific value and the like, high-temperature water vapor can be reused, hydrogen production, boiler heating, power plant power generation and the like can be further realized, thegasified gas can serve as a chemical material, and resources such as the biomasses can be efficiently used.

Description

technical field [0001] The invention specifically relates to a reflux high-temperature fixed-bed gasifier and a process method thereof, belonging to the field of thermal energy engineering. Background technique [0002] With the continuous development of society and the continuous improvement of the level of science and technology, more and more people pay more and more attention to the rational use of energy. At present, the solid waste treatment methods such as biomass, municipal solid waste and medical waste mainly include landfill, composting, Incineration, pyrolysis and gasification, etc. Among them, pyrolysis gasification technology has great advantages in the treatment of solid waste resources, and has the characteristics of good material adaptability, high conversion efficiency, fast reaction rate, and flexible system scale. Many people have applied it to the treatment of municipal solid waste and industrial solid waste; however, this technology also has many problem...

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Problems solved by technology

[0006] The purpose of the present invention is to provide a reflux high-temperature fixed-bed gasifier and its process method, which solve the existing problems of the existing pyrolysis gasification method: high energy consumption, low heat exchange efficiency, low steam temperature and low utilization rate , resulting in high tar content in the gas, easy blockage of the grate, etc.

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