Dry powder gasification furnace

Abstract

The invention discloses a dry powder gasification furnace which comprises a furnace body, a top nozzle and a side nozzle, wherein the furnace body is internally provided with a vaporizing chamber; the top nozzle is arranged at the top of the furnace body, and is used for injecting pulverized coal, oxygen, steam and fuel gas into the vaporizing chamber from the top of the vaporizing chamber; the top nozzle is internally provided with an ignition rod; and the side nozzle is arranged at the side of the furnace body, and is used for injecting pulverized coal, oxygen and steam into the vaporizing chamber from the side of the vaporizing chamber. According to the dry powder gasification furnace, the carbon conversion rate is higher than 99%, and the decomposition rate of water vapor is higher than 80%; therefore, the dry powder gasification furnace has remarkable gasification efficiency and can be widely applied to the field of the existing coal gasification technology.

Description

technical field [0001] The invention relates to coal gasification technology, in particular to a dry powder gasification furnace. Background technique [0002] There are two types of traditional gasifiers with multi-nozzle structure: one type is to set four counter-spray nozzles at the lower part of the straight pipe section of the gasifier, the gas goes up and the ash goes down; The upper part of the straight pipe section is provided with four spray nozzles. However, the above-mentioned problem in the traditional gasifier is that the clogging of the slag port is easy to occur when the coal type fluctuates. Moreover, the furnace body of the traditional gasifier is a refractory brick structure, which has poor adaptability to coal types and cannot gasify coal with a high ash melting point. The gas goes down and the ash goes down along the furnace wall. clogged. In addition, traditional gasifiers have low gasification efficiency, low carbon conversion rate and low water vapo...

AI Technical Summary

Problems solved by technology

However, the problem in the above-mentioned traditional gasifier is that the clogging of the slag port is easy to occur when the coal type fluctuates

Moreover, the furnace body of the traditional gasifier is a refractory brick structure, which has poor adaptability to coal types and cannot gasify coal with a high ash melting point. The gas goes down and the ash goes down along the furnace wall. jam

In addition, traditional gasifiers have low gasification efficiency, low carbon conversion rate and low decomposition rate of water vapor

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