Solid organic waste treatment and separation system based on supercritical water oxidation technology

Abstract

The invention discloses a solid-containing organic waste treatment and separation system based on supercritical water oxidation technology, including a solid-containing waste pretreatment module, a solid-containing waste preheating module, an oxidant supply module, a supercritical water oxidation module, and subsequent products Temperature and pressure reduction module, subsequent product online separation module. Through screw conveyors, crushers, vibrating screens, iron removers, grinding pumps and other devices, solid wastes are crushed, screened, and ground in multiple stages to meet the requirements of supercritical water oxidation feed. At the same time, by adding quartz sand to grind the sedimentary salt that may be generated in the system, the problems of salt deposition and blockage in heat exchangers, reactors and other equipment are avoided. For the gas-liquid-solid three-phase products after the reaction, a two-stage separation measure combining a three-phase separator and a liquid-solid two-phase separator is adopted. At the same time, the liquid phase separated by the liquid-solid separator is circulated and separated, which improves the liquid-solid separation. At the same time, the solid residue after the reaction can be used for brick making, ceramsite making and external sales, etc., which improves the system economy.

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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