Ascending pipe for wet oxidation treatment of wastewater

Abstract

The invention discloses an ascending pipe for wet oxidation treatment of wastewater, and particularly relates to an ascending pipe capable of being used for wet oxidation of wastewater in a coke oven. The ascending pipe comprises a coal gas inlet, a coal gas outlet, a sleeve consisting of an outer pipe and an inner pipe, a salt bath discharge port and a salt bath inlet in the sleeve, catalyst pipelines arranged in an interlayer of the sleeve, an upper communicating vessel of the catalyst pipelines, a lower communicating vessel of the catalyst pipelines, a waste liquid inlet, a waste liquid outlet, an expansion joint, an upper flange, a lower flange, and a warped piece connected to the outer wall of the inner pipe. According to the ascending pipe, molten salt is loaded in the interlayer of the ascending pipe to serve as a heat-conducting medium, so that the temperature distribution of the inner wall of the ascending pipe is more uniform while the waste heat of raw gas is effectively absorbed, and through the pipelines capable of being filled with a catalyst are arranged in the interlayer of the ascending pipe, wet oxidation treatment of waste water can be realized by fully utilizing waste heat of the ascending pipe.

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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