Waste heat boiler-type gasifier

Abstract

The invention discloses a waste heat boiler-type gasifier. The gasifier comprises a first gasifier body, a second gasifier body, an upper primary nozzle, and an upper secondary nozzle. A combustion chamber, a first waste heat boiler cooling chamber and a quench chamber are provided inside the first gasifier body. The first waste heat boiler cooling chamber comprises a first radiation cooling chamber, the top end of which communicates with the bottom end of the combustion chamber and the bottom of which is open, and a first convection cooling chamber, the bottom end of which communicates with the bottom end of the first radiation cooling chamber and the upper part of which is provided with an air outlet. A second waste heat boiler cooling chamber is provided inside the second gasifier body, and comprises a second radiation cooling chamber, the top end of which communicates with an air outlet, and a second convection cooling chamber, the bottom end of which communicates with the bottom end of the second radiation cooling chamber. The gasifier is advantaged by higher thermal efficiency, high carbon conversion rate and high gasification efficiency, etc.

Description

technical field [0001] The invention relates to coal-based polygeneration gasification technology, in particular to IGCC and coal-based high-concentration CO gasification, and more particularly to a waste boiler-type gasification furnace. Background technique [0002] There are two types of traditional gasifiers with multi-nozzle structure: the first type is to install multiple nozzles in the lower part of the straight pipe section of the gasifier, the gas goes up, and the ash goes down along the furnace wall. This type of gasifier , the system flow is long, the structure of the waste boiler is complicated, the cost of the equipment is high, and the clogging of the slag port is easy to occur when the coal type fluctuates greatly during operation; the second type is to install multiple nozzles on the upper part of the straight pipe section of the gasifier, and the gas goes down 1. The ash and slag go down along the furnace wall. This type of gasifier is mostly a chilling proc...

AI Technical Summary

Problems solved by technology

[0002] There are two types of traditional gasifiers with multi-nozzle structure: the first type is to install multiple nozzles in the lower part of the straight pipe section of the gasifier, the gas goes up, and the ash goes down along the furnace wall. This type of gasifier , the system flow is long, the structure of the waste boiler is complicated, the cost of the equipment is high, and the clogging of the slag port is easy to occur when the coal type fluctuates greatly during operation; the second type is to install multiple nozzles on the upper part of the straight pipe section of the gasifier, and the gas goes down 1. The ash and slag go down ...

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