Recycling method of inactivated non-noble metal vinyl chloride catalyst carrier

Abstract

The invention provides a recycling method of an inactivated non-noble metal vinyl chloride catalyst carrier. The recycling method comprises the steps of pretreatment, activation, primary loading, granulation and coating. The method has the beneficial effects that residual organic matters and heavy metals in the catalyst carrier are effectively removed, and the method is simple to operate, low in energy consumption and good in economic feasibility; the performance of the activated carbon serving as a carrier can be restored to a certain degree, and the activity is high; a large amount of resources and cost consumed by preparation and activation of the activated carbon are effectively saved, and sustainable resource reutilization is realized; according to the method, the adsorbability of theinactivated catalyst carrier and various elements contained in an inactivated catalyst are fully utilized, harmless treatment of the waste inactivated catalyst is realized, the storage and treatmentpressure of industrial waste is greatly relieved, waste can be turned into wealth, and recycling of resources is realized.

Description

technical field [0001] The invention relates to the field of vinyl chloride catalysts, in particular to a method for recovering and reusing deactivated non-noble metal vinyl chloride catalyst supports. Background technique [0002] Polyvinyl chloride is one of the main general-purpose plastics in the world. It is widely used in industrial products, building materials, pipes, decorative materials, wires and cables, and is also widely used in packaging materials, sealing materials, fibers, etc. [0003] The catalysts for preparing polyvinyl chloride by calcium carbide method mainly include noble metal catalysts, non-precious metal catalysts and non-metal catalysts. Among them, due to the comprehensive influence of many factors such as catalytic efficiency, cost advantage, and easy preparation, its non-precious metal catalyst is the most widely used in the production process of polyvinyl chloride prepared by the calcium carbide method. Compared with the other two catalysts, it...

AI Technical Summary

Problems solved by technology

The disadvantage of this patent is that the process steps it adopts are cumbersome and energy-intensive, and it fails to realize the reuse of activated carbon carrier

The disadvantage of this patent is that its treatment process has high energy consumption and low energy efficiency ratio. Compared with the preparation and activation of new activated carbon, its cost performance is low and its economic feasibility is not high.