Method for preparing hydrocarbon-rich combustible gas through gasification of combustible solid waste

Abstract

The invention relates to a method for preparing hydrocarbon-rich combustible gas through the gasification of combustible solid waste. The method can be used for preparing hydrocarbon-rich high-quality combustible gas. The system is composed of a fluidized bed gasification reactor, a cyclone melting furnace, a water vapor reforming reactor, a super-heater, an economizer, a hydrocarbon synthesis reactor, a heat pipe heat exchanger, a bag filter, a gas scrubbing tower, a dehydration tower, an induced draft fan, a compression device, a gas storage tank, an air separation device, and the like. The method adopts a heat conversion technology especially aiming at high-efficiency and clean utilization of combustible solid waste as an energy. With the method, combustible gas rich in hydrocarbon gas can be prepared, contents of tar and carbon particles in combustible gas can be effectively reduced, metal resources in combustible solid waste can be recovered, and near-zero discharging of pollutants such as dioxin can be realized. With the system, gas preparing cost is reduced with a maximal extent, such that effective recovering and utilization of resources are realized. An overall thermal efficiency is high, and environment pollution is low. The method is highly economic, safe, and reliable.

Description

technical field [0001] The invention relates to a method for producing hydrocarbon-rich combustible gas by gasifying combustible solid waste, which belongs to the field of resource disposal of solid waste. Background technique [0002] In recent years, due to economic development and climate change, the consumption of urban gas in my country has risen sharply, and the supply of gas in many cities has been tight, which makes the technology of solid fuel gasification to produce combustible gas widely concerned. Traditional gasification is mainly based on coal gasification, but in view of the current surge in the output of combustible solid waste such as municipal solid waste and agricultural and forestry waste, and the obvious shortage of processing capacity, combustible solid waste gasification can be used to produce combustible gas and realize waste resource utilization. utilization is more attractive. Because the gasification characteristics of combustible solid waste are ...

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Problems solved by technology

[0003]Technical problem: Aiming at the problems of low calorific value of gas produced in the gasification system of combustible solid waste, high content of CO / tar and low thermal efficiency of the system, the present invention proposes a A method for producing hydrocarbon-rich combustible gas through gasification of combustible solid waste, aimed at increasing the calorific value of combustible gas, reducing the concentration of CO and tar, and realizing the direct use of combustible solid waste gasification products as city gas

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