A solid waste pyrolysis liquid phase product molten salt cascade treatment impurity removal and upgrading device

Abstract

The embodiment of the present invention provides a solid waste pyrolysis liquid phase product molten salt cascade treatment impurity removal and upgrading device. The device includes a tar classification unit, a molten salt cascade heat treatment unit, a cascade condensation treatment unit, a molten salt regeneration unit, a feed liquid recovery unit and a tail gas treatment unit. When the device is working, the liquid phase products of solid waste pyrolysis are settled and graded, and then sent to the second-stage molten salt reactor for cascade heat treatment, and the generated slag is further regenerated and then returned to the molten salt reactor; the reaction product enters the two-stage condenser , to achieve gas-liquid separation, the secondary liquid phase product is used as a working medium and enters the cooling cycle system for cooling of the primary condenser, and the separated liquid enters the liquid storage tank after circulation, and the generated gas is further treated and reused. The device of the invention solves the problems of low utilization rate of solid waste pyrolysis liquid phase products and possible secondary pollution, etc., and realizes the technical goal of comprehensive treatment and resource utilization of solid waste pyrolysis liquid phase products.

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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