Garbage gasification system and fuel gas manufacturing method

Abstract

The invention discloses a garbage gasification system and a fuel gas manufacturing method. The system comprises a gasifier body, auxiliary equipment, high-temperature dust removal equipment, a heat exchanger, a gas purification washing system, an oxygen generator, an air mixing device, a steam generator and a gas mixer, wherein the gasifier body, the high-temperature dust removal equipment, the heat exchanger and the gas purification washing system are sequentially connected; the oxygen generator and the air mixing device are used for preparing rich oxygen, the steam generator is used for preparing steam, the rich oxygen is heated by the heat exchanger and mixed with the steam to obtain a gasifying agent to enter the gasifier body, or the rich oxygen is mixed with the steam and heated by the heat exchanger to obtain the gasifying agent to enter the gasifier body; the method comprises the steps that solid waste is combusted and vaporized, gasified gas is subjected to dust removal, heatexchange, purification and washing to obtain crude gas, and rich oxygen and steam are mixed, a mixture is subjected to heating by the heat exchanger to enter the gasification body. The energy utilization rate and the crude gas heat value are increased, the gasification efficiency is high, the gas yield is large, the gasification mode is simple, and implementation is easy.

Description

technical field [0001] The invention relates to a refuse gasification system, and also relates to a method for producing gas by using the system. Background technique [0002] Gasification technology is a high-tech in the field of waste utilization and energy supply. It is of great significance to improve environmental quality and change energy structure. It has been highly valued by academic and industrial circles in some developed countries in Europe and America. Through the gasification and oxidation treatment of solid waste, usable gas is produced. In the process of gasification and oxidation, the fuel provides the heat required for gasification and reduction. During the process, gaseous carbon dioxide will be generated, resulting in a decrease in the low-level calorific value of the synthesis gas. At the same time, carbon dioxide occupies a part of the pressure, which is not conducive to some important reactions, such as the water-gas shift reaction. , which in turn af...

AI Technical Summary

Problems solved by technology

[0004] One of the technical problems to be solved by the present invention is to provide a garbage gasification system that overcomes the defects of high reaction furnace temperature and low service life in the prior art

[0005] The second technical problem to be solved by the present invention is to provide a fuel gas production method that overcomes the defects of high reaction furnace temperature and low service life of the existing oxygen-enriched oxidation technology

Images