Chilling ring of gasification furnace

Abstract

The invention discloses a chilling ring of a gasification furnace. The chilling ring comprises an outer lip ring, an inner lip ring, a nozzle ring, an inner ring of a water cavity, an outer ring of the water cavity, a bottom plate of the water cavity, a chilling water conveying pipe and a descending pipe, wherein the parts are connected by welding; the outer lip ring and the inner lip ring form a chilling water distribution chamber, the nozzle ring, the inner ring of the water cavity, the outer ring of the water cavity and the bottom plate of the water cavity form the water cavity, and the chilling water conveying pipe is communicated with the water cavity and the chilling water distribution chamber; a chilling water circular gap is formed between the outer lip ring and the descending pipe; preferably, the circular outer lip ring is a three-piece type, and is thickened in a jet direction of the nozzle ring. According to the chilling ring of the gasification furnace provided by the invention, the outer lip ring is in the three-piece type which replaces an integral circular structure, and the inner lip ring, the nozzle ring, the outer ring of the water cavity and the inner ring of the water cavity are changed to independent pieces; parts of assemblies can be directly changed in the furnace in the using process, vulnerable assemblies can be independently changed, and assemblies which are not easy to wear can be repeatedly used, so that the chilling ring is long in service life and convenient and economical to maintain.

Description

technical field [0001] The invention belongs to the technical field of coal-water slurry gasification, and in particular relates to a quenching ring of a coal-water slurry gasification furnace. Background technique [0002] The gasifier is the core equipment of the coal-water slurry gasification technology, and the quenching ring is the core component of the gasifier. During the operation of the equipment, the quenching ring is in the high temperature process gas of 1250-1350° and the slag in the molten state and 230- In the harsh environment of 250° circulating black water, the purpose is to form a uniform rotating water film on the inner surface of the downcomer to quench the high-temperature syngas and molten slag and protect the downcomer from damage. During the normal operation of the gasifier, the temperature difference between the inside and outside of the outer lip ring of the quenching ring is large, and it is constantly subjected to large thermal stress. The high t...

AI Technical Summary

Problems solved by technology

If the inner lip ring of the quenching ring is seriously damaged, it cannot be quickly repaired internally. When the nozzle hole is scoured severely, the entire quenching ring will be scrapped, which seriously affects the stable operation of the gasifier and increases the operating cost.

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