Garbage gasification system using air and steam as gasification agents

A gasification system and gasification agent technology are applied in the system field of high temperature gasification of domestic waste, which can solve the problems of low gas calorific value, waste heat loss, low gasification efficiency, etc. The effect of reducing sensible heat loss and overcoming technical defects

Pending Publication Date: 2020-01-14
深圳龙澄高科技环保股份有限公司
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Problems solved by technology

There are two problems in the gasification of domestic garbage with air as a gasification agent: (1) the calorific value of the gas after gasification is...

Method used

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  • Garbage gasification system using air and steam as gasification agents

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Embodiment Construction

[0017] Domestic garbage that has been pre-treated enters the gasifier 1 through the conveying device. During the material descending process, the air blown in by the blower and the high-temperature gas formed after heat exchange in the heat exchanger 3 enter through the gas mixer 4 inlet. After being mixed with the steam generated by the steam generator 5 in the gas mixer 4, it enters the gasifier 1 under the action of the fan, and in the gasification gas, the gasification agent interacts with domestic waste, and reacts in a high temperature environment to form coarse The fuel gas passes through the gas outlet of the gasifier, and passes through the gas purification and washing system 2 under the action of the fan to produce clean syngas for resource utilization.

[0018] In the gasification layer of the gasifier 1, the oxygen in the air and the materials are combusted to generate carbon dioxide, which releases a large amount of heat. Then, under the action of high temperature ...

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Abstract

The invention belongs to a domestic garbage treatment gasification system, in particular to a garbage gasification system using air and steam as gasification agents. The invention adopts air and watervapor to mix, and the mixed gas with a temperature of 120-220 DEG C is used as a gasification agent to produce, while ensuring that the air content in the gasification agent is 0.2%-0.35% of the theoretically required air amount, the mass ratio of steam/solid fuel in gasification agent should be controlled at 0-0.35. According to the invention, by changing the gasification agent, the gasificationgas output and the gas calorific value are improved, the carbon content of ash slag is reduced, the sensible heat loss is reduced, and the gasification energy utilization rate can be increased by 10-30%.

Description

technical field [0001] The invention belongs to the domestic waste gasification technology, and in particular relates to a system for gasifying domestic waste at high temperature by using air and water vapor as gasification agents. 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. In the direction of domestic waste gasification, the research work in my country started relatively late, and there is a lack of sufficient research on the high-temperature gasification process of domestic waste. At present, there is no perfect process system for high-temperature gasification. The gasification agent composition is an important factor affecting the gasification reaction in the gasification process. The commonly us...

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Application Information

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IPC IPC(8): C10J3/20C10J3/72C10J3/84
CPCC10J3/20C10J3/725C10J3/84C10J2300/0946C10J2300/0956C10J2300/0976
Inventor 龚佰勋黎莉邓晨曹桦钊陈洪一
Owner 深圳龙澄高科技环保股份有限公司
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