A rising pipe for wet oxidation treatment of wastewater

Abstract

The invention discloses a rising pipe for wet oxidation treatment of waste water, in particular to a rising pipe for wet waste water oxidation in a coke oven, comprising a casing composed of a gas inlet, a gas outlet, an outer pipe and an inner pipe, and an inner casing. Salt bath discharge outlet and salt bath loading inlet, catalyst pipes arranged in the casing interlayer, upper communicators of catalyst pipes, lower communicators of catalyst pipes, waste liquid inlets and waste liquid outlets, expansion joints, and upper and lower flanges , and the warp connected to the outer wall of the inner pipe; the rising pipe is filled with molten salt in the interlayer of the rising pipe as a heat-conducting medium, which can effectively absorb the waste heat of the raw gas and make the temperature distribution of the inner wall of the rising pipe more uniform, which can better improve the rising temperature. At the same time, by arranging pipes that can be filled with catalysts in the interlayer of the riser, the waste heat of the riser can be fully utilized to realize the wet oxidation treatment of wastewater.

Description

technical field [0001] The invention relates to a rising pipe for wet oxidation treatment of waste water, which belongs to the technical field of waste water treatment and waste gas recovery and utilization. Background technique [0002] The coking industry has developed for more than 100 years. During this period, in order to realize the high efficiency, low consumption and low pollution of the coking process, every link of the coking process needs to be continuously optimized. With the continuous enlargement of the coking process, the coke oven is energy-saving and efficient, and the temperature control of the top of the furnace is realized to achieve the purpose of secondary pyrolysis to obtain higher yields. The various structures of the coke oven have been optimized and improved. Mainly include: increasing the volume of the carbonization chamber, adopting different materials for the combustion chamber, adopting different thickness of the furnace wall, adopting the regen...

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Problems solved by technology

[0011] The present invention mainly aims at problems such as low heat recovery efficiency of the existing riser pipe and easy deposition of graphite in the riser pipe. It adopts a smooth inner cylinder structure, uses high-temperature molten salt as the heat transfer medium, and is equipped with an inner pipe that can be filled with catalysts to ensure that the riser pipe At the same time, the deposition of graphite and other substances can be reduced, the heat recovery efficiency can be improved, and the purpose of using waste heat to degrade coking wastewater can be realized

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