High-temperature coal gas chilling chamber

Abstract

The invention discloses a high-temperature coal gas chilling chamber. A chilling chamber is formed in a chilling shell; a water-cooled wall descending cylinder is arranged in an inner cavity of the chilling shell; a high-temperature coal gas inlet for allowing high-temperature coal gas and gasified ash to enter is formed in the upper part of the water-cooled wall descending cylinder; the lower part of the water-cooled wall descending cylinder extends into a chilling water bath of the chilling chamber; a slag discharging port is formed in the bottom of the chilling chamber, a coal gas outlet isformed in the side wall of the upper portion of the chilling shell, an ash water outlet is formed in the side wall of the lower portion of the chilling shell, an annular gap between the water coolingwall descending cylinder and the chilling shell is a chilling chamber annular gap, and a water cooling wall of the water cooling wall descending cylinder is cooled through desalted water. The high-temperature coal gas chilling chamber has the effects that chilling water of a gasification furnace directly enters the chilling chamber through the pipeline, high-temperature coal gas and ash slag arecooled and washed in the chilling chamber, then coal gas containing part of fine ash enters a subsequent procedure to be treated, coarse slag enters a slag discharging system to be treated, and ash water containing fine ash enters the subsequent procedure to be treated.

Description

technical field [0001] The invention relates to the technical field of gasification of carbonaceous substances, in particular to a high-temperature gas quenching chamber, which can be used for high-temperature gasification of carbonaceous substances and gasification ash. Background technique [0002] At present, in the cooling and washing process of high-temperature gas for gasification of carbonaceous substances, chilled water is often used to chill and wash the high-temperature gas and gasification ash. This process is usually carried out in a gasification chilling chamber. The operation stability of the chilling chamber is directly related to the operation stability of the gasification device. [0003] In the quenching chamber of the gasifier, high-temperature coal gas and gasified ash enter from the upper part of the quenching chamber, and need to enter the water bath in the lower part of the quenching chamber through a descending tube. At present, a common practice is t...

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Problems solved by technology

[0010] For this reason, the present invention provides a high-temperature gas quenching chamber to solve the problem of coal gasification quenching ring wear, blockage, and easy scaling in the prior art, and the downcomer often overheats, bulges, and cracks. The failure rate of the device is high, the maintenance task is heavy, and the gas is too low due to the large amount of quenching water, and the gas temperature of the quenching water is too low. At the same time, the quenching water filter is canceled to realize the safe and stable operation of the quenching chamber.

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