Cleaning type gas collecting pipe for thermal recovery coke oven

Abstract

The invention discloses a clean thermal recycling coke oven gas collecting pipe which belongs to the industrial kiln accessory field and comprises an outer casing and a liner. The gas collecting pipe is characterized in that the liner is composed of a primary adiabatic layer and a secondary adiabatic layer which is arranged between the primary adiabatic layer and the outer casing. The primary adiabatic layer is made of carburizing resistance mullite bricks which are packed through high temperature binders. The secondary adiabatic layer is made of insulation silicate material solidified through high aluminum binders. Compared with the prior art, the clean thermal recycling coke oven gas collecting pipe has the characteristics of light weight, high temperature resistance, low heat conduction, etc.

Description

technical field

[0001] The invention relates to an accessory of an industrial kiln, in particular to a clean heat recovery coke oven gas collecting pipe. Background technique

[0002] The gas collecting pipe is a gas conveying device used to collect coke oven exhaust gas and then use the waste heat of the exhaust gas to generate electricity. At present, the lining material of the gas collecting pipe is mostly made of zirconium-containing ceramic fiber folded blocks, which are fixed to the carbon steel shell by high-temperature resistant stainless steel anchors. Above, the design heat-resistant temperature is 1250°C, but due to insufficient combustion of part of the raw coal gas, it enters the branch pipe of the gas collection pipe through the ascending flue and the bridge pipe, and secondary combustion occurs, causing the temperature of the gas collection branch pipe to exceed the design temperature and reach 1300°C , resulting in volume shrinkage of the zirconium-containing...

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