Supercritical water treatment device for treating organic waste and treatment method for organic waste

Abstract

The invention provides a supercritical water treatment device for treating organic waste. The supercritical water treatment device comprises a pressure proof shell, a double-layer reactor consisting of inner walls provided with micropores, a feed pipe, a discharge pipe and a high-pressure gas inlet pipe, wherein a reaction chamber is defined by the inner walls, and a cavity is formed by the pressure proof shell and the inner walls; the feed pipe and the discharge respectively pass through the pressure proof shell and the inner walls and are communicated with the reaction chamber; and the high-pressure gas inlet pipe passes through the pressure proof shell and is communicated with the cavity. The invention also provides a treatment method for the organic waste. According to the invention, the reaction chamber formed by the inner walls provided with the micropores is used as an occasion for a supercritical oxidation reaction, and reaction liquid is limited in the reaction chamber through high-temperature and high-pressure air; and meanwhile, when the high-pressure air enters the reaction chamber through the inner walls provided with the micropores, a gas film can be formed on the inner surfaces of the inner walls so as to stop inner wall or pipeline blocking caused by that salt deposited solid is adhered to pipe walls, and the reaction liquid is avoided from being in direct contact with the inner walls to reduce corrosion to the treatment device.

Description

technical field [0001] The invention belongs to the technical field of organic waste treatment, and in particular relates to a supercritical water treatment device for organic waste treatment and a treatment method for organic waste. Background technique [0002] Municipal sludge refers to the solid, semi-solid and liquid waste produced in the sewage treatment process of urban sewage treatment plants. It contains most of the pollutants in sewage and is an inevitable product in the sewage treatment process. With the increase of the amount of sewage treatment, the output of sludge is also increasing. How to effectively treat and dispose of municipal sludge has become an urgent problem for every city. [0003] At present, the commonly used treatment methods for municipal sludge mainly include sanitary landfill, sludge incineration, sludge composting, utilization of sludge building materials, and water body digestion. Sludge sanitary landfill began in the 1960s. So far, it has ...

AI Technical Summary

Problems solved by technology

The reactor realizes the separation of pressure action and corrosion action through physical partitioning, which can solve the problem of reactor corrosion and clogging, but its structure is complex and difficult for daily operation and maintenance

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