Supercritical water oxidation reactor for treating oily sludge

Abstract

The invention discloses a supercritical water oxidation reactor for treating oily sludge. The supercritical water oxidation reactor comprises a reaction cavity, a central pipe, a sludge distribution pipe, an oxidizing agent distribution pipe, an oxidizing agent inlet, a sludge inlet, a public port, a gas outlet and a slag slurry outlet, wherein the central pipe is positioned in the reaction cavity and is coaxial with the reaction cavity; the sludge distribution pipe and the oxidizing agent distribution pipe are arranged in an annular space formed by the central pipe and the reaction cavity; theoxidizing agent inlet, the sludge inlet, the public port, the gas outlet and the slag slurry outlet are arranged in the reaction cavity and enable the inside of the reactor and the outside to be communicated. the oxidizing agent inlet extends into the reaction cavity and is connected with the oxidizing agent distribution pipe, oxidizing agent distribution holes are formed in the pipe wall of the oxidizing agent distribution pipe, the sludge inlet extends into the reaction cavity and is connected with the sludge distribution pipe, sludge distribution holes are formed in the pipe wall of the sludge distribution pipe, and the public port extends into the reaction cavity and is connected with the central pipe in a leakage-free mode. Water spraying holes are formed in the wall of the central pipe. According to the invention, the technical problems of easy coking and difficult continuous operation in the oxidation reaction of the oily sludge are solved, and long-period continuous harmless treatment of the oily sludge in the supercritical water environment is realized.

Description

technical field [0001] The invention belongs to the technical field of environmental protection, and in particular relates to a supercritical water oxidation reactor for treating oily sludge. Background technique [0002] Sewage treatment systems of oil fields and refineries and crude oil production, storage and transportation systems will generate a large amount of oily sludge. With the increasingly stringent environmental protection regulations and the continuous improvement of the environmental awareness of the whole society, the treatment of oily sludge has attracted more and more attention. The traditional treatment methods of oily sludge include landfill, composting, incineration, etc., but the landfill of sludge needs to occupy a large amount of space and cost a lot of freight, and pollute the environment and groundwater; In addition, the oily sludge may contain toxic and harmful substances such as heavy metals; the incineration method also has strict requirements on ...

AI Technical Summary

Problems solved by technology

[0005] In order to solve the shortcomings of low efficiency and difficulty in continuous operation in the treatment of oily sludge in the prior art, the present invention provides a supercritical water oxidation reactor for treating oily sludge and its operating method, which overcomes the problems in the oxidation reaction of oily sludge. The technical problems of easy coking and difficult continuous operation have realized the long-term continuous harmless treatment of oily sludge in supercritical water environment

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