A continuous heat treatment system for solid waste based on molten salt

Abstract

An embodiment of the present invention provides a continuous heat treatment system for solid waste based on molten salt. The system mainly includes a heat treatment box equipped with a feed crushing device, a low-temperature molten salt storage tank, a high-temperature molten salt storage tank, and a tail gas waste heat recovery device. The solid waste is crushed by the feeding crushing device and then sent to the heat treatment box for thermal desorption or drying treatment in the molten salt heating zone. The molten salt in the heating zone is heated and transported by the high-temperature molten salt storage tank; the pollution caused by heating The tail gas is sent to the low-temperature molten salt storage tank for purification. After heat exchange, the purified tail gas enters the gas-liquid separator to complete the purification and is discharged into the atmosphere. The system uses high-temperature molten salt as the heating medium, and the type and ratio of the molten salt can be appropriately adjusted according to different processing purposes, so that the system is suitable for various heat treatment methods such as drying, thermal desorption, and sterilization. Salt can also participate in the purification of polluted tail gas, and ultimately realize the flexible and efficient operation of the system as a whole.

Description

technical field [0001] The invention belongs to the technical field of solid waste treatment, and relates to solid waste treatment technologies such as sludge drying, soil remediation, pathogenic bacteria-contaminated solid waste elimination, and in particular to a continuous heat treatment system for solid waste based on molten salt. Background technique [0002] Nowadays, with the construction and relocation of petrochemical plants, it is inevitable that some high-concentration and highly toxic organic pollutants will infiltrate into the soil, which poses a serious hazard to the ecological environment and human health, and suitable solutions are urgently needed. In addition, problems such as pathogenic microorganisms, viruses, or moisture content make solid waste such as high slaughterhouse sludge, biogas residue, and medical waste need to be sterilized and dried to eliminate potential threats to the human body or the environment. [0003] The existing solid waste heat tre...

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Problems solved by technology

[0004] The present invention aims to solve the technical problems existing in the existing solid waste heat treatment technology, such as insufficient treatment efficiency, limited application range, and difficult tail gas treatment, and provides a continuous heat treatment system for solid waste based on molten salt. The heat treatment efficiency of the system is High, the heating conditions can be flexibly adjusted according to the material, and the tail gas can be effectively purified while ensuring the long-term stable operation of the heating medium system

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