Solid waste pyrolysis liquid-phase product fused salt cascade treatment impurity removal and quality improvement device

Abstract

The embodiment of the invention provides a solid waste pyrolysis liquid phase product fused salt cascade treatment impurity removal and quality improvement device. The device comprises a tar grading unit, a fused salt cascade heat treatment unit, a cascade condensation treatment unit, a fused salt regeneration unit, a feed liquid recovery unit and a tail gas treatment unit. When the device works,a solid waste pyrolysis liquid-phase product is subjected to settling and grading treatment and then fed into a second-stage molten salt reactor for cascade heat treatment, generated slag is further regenerated and then returns to the molten salt reactor, a reaction product enters a two-stage condenser to realize gas-liquid separation, a second-stage liquid-phase product is used as a working medium to enter a cooling circulation system to cool a first-stage condenser, separated liquid after circulation enters a liquid storage tank, and generated gas is further subjected to tail gas treatment and reutilization. The device provided by the invention solves the problems of low utilization rate of the solid waste pyrolysis liquid phase product, possible secondary pollution and the like, and realizes the technical goals of comprehensive treatment and resource utilization of the solid waste pyrolysis liquid phase product.

Description

technical field [0001] The invention belongs to the technical field of solid waste treatment, and in particular relates to a device for removing impurities and improving quality by cascade treatment of solid waste pyrolysis liquid-phase product molten salt. Background technique [0002] During the pyrolysis process of solid waste, a relatively high proportion of liquid phase products is often produced. Due to high viscosity, poor thermal stability and usually a certain degree of corrosiveness, these liquid phase products of solid waste pyrolysis will inevitably lead to production During the process, problems such as pipeline adhesion blockage, corrosion and perforation will occur. If they are not dealt with in time, they will cause further harm, which not only reduces production efficiency, but even seriously threatens production safety. In addition, in view of the characteristics of high carbon, high hydrogen and a wide variety of organic compounds in the liquid phase produ...

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Problems solved by technology

[0005] The present invention aims to solve the technical problems of inefficient treatment of solid waste pyrolysis liquid phase products by the existing molten salt heat treatment technology, low energy conversion utilization rate, and easy secondary pollution, and provides a solid waste pyrolysis liquid phase product. The product molten salt cascade treatment impurity removal and upgrading device can reduce the energy consumption of solid waste pyrolysis liquid phase product removal and upgrading treatment, improve the recycling efficiency of materials and energy, and better realize the comprehensive synthesis of solid waste pyrolysis liquid phase products Disposal and resource utilization

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