System for treating and separating solid-containing organic waste based on supercritical water oxidation technology

Abstract

The invention discloses a system for treating and separating solid-containing organic waste based on a supercritical water oxidation technology. The system comprises a solid-containing waste pretreatment module, a solid-containing waste preheating module, an oxidizing agent supply module, a supercritical water oxidation module, a follow-up product cooling and depressurizing module and a follow-upproduct online separation module. By means of a screw conveyer, a crusher, a vibrating screen, an iron remover and a grinding pump, the solid-containing waste is subjected to multi-stage crushing, screening and grinding, thereby being enabled to meet the feeding requirement of the supercritical water oxidation. Meanwhile, salt deposits possibly produced in the system are ground by adding quartz sand, and the problem of salt deposits and blockage of equipment such as a heat exchanger, a reactor and the like are solved. A two-stage separation measure with combination of a three-phase separator and a liquid-solid two-phase separator is adopted for gas-liquid-solid three-phase products obtained after the reaction, meanwhile, the liquid phase obtained through separation of a liquid-solid separator is subjected to cycling separation, so that liquid-solid separation efficiency is improved, furthermore, solid residues obtained after the reaction can be applied to brickmaking, ceramsite makingand sales, and economic efficiency of the system is improved.

Description

technical field [0001] The invention belongs to the field of supercritical water oxidation technology for treating solid-containing waste, and relates to a treatment and separation system for solid-containing organic waste based on supercritical water oxidation technology. Background technique [0002] In recent years, with the continuous development of my country's industry, the discharge of solid waste has increased year by year, mainly including solid and semi-solid waste materials, such as slag, sludge, discarded products, etc. For solid organic waste, its organic content is high , There are many types of organic matter, the concentration of COD is high, and at the same time, it has toxic substances such as heavy metals, and may also contain explosive, radioactive and corrosive substances, which are seriously harmful to humans and the environment. At present, most of the solid-containing organic waste treatment methods are incineration. The incineration method has a certa...

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Problems solved by technology

[0008] The purpose of the present invention is to overcome the shortcomings of the above-mentioned prior art, to provide a treatment and separation system of solid-containing organic waste based on supercritical water oxidation technology, which can effectively solve the pretreatment of solid-containing waste when supercritical water oxidation technology is used. problems, such as salt deposition and clogging during the reaction process, and the efficient separation and resource utilization of solid-phase products after treatment

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