Secondary utilization method of inactivated non-noble metal vinyl chloride catalyst carrier

Abstract

The invention provides a secondary utilization method of an inactivated non-noble metal vinyl chloride catalyst carrier, which is characterized by comprising the following steps: pretreatment, mixing, loading, immobilization activation, drying, mixing and coating. The pretreatment comprises reduced pressure impurity removal, acid treatment, leaching, microwave treatment, modification, drying and grinding. According to the secondary utilization method of the inactivated non-noble metal vinyl chloride catalyst carrier, the active carbon carrier can recover a considerable degree of self-owned performance again; residual organic matters and heavy metals in the catalyst are effectively removed, and trace elements contained in the catalyst are effectively retained; the treated carrier activated carbon is transferred into the soil conditioner, and the adsorbability of the deactivated catalyst carrier and trace elements contained in the deactivated catalyst are fully utilized, so that harmless treatment of the waste deactivated catalyst is realized, 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 secondary utilization method of a deactivated non-noble metal vinyl chloride catalyst carrier. Background technique [0002] Vinyl chloride is a monomer for the synthesis of polyvinyl chloride. Polyvinyl chloride resin is an important plastic raw material and one of the five general-purpose synthetic resins. It has good physical and mechanical properties and is widely used in various fields of production and life. The production of vinyl chloride monomer is an important link in the polyvinyl chloride industry. [0003] The synthesis process of vinyl chloride is divided into two categories, namely ethylene oxychlorination and acetylene hydrochlorination, among which acetylene hydrochlorination is the main method. The catalysts for preparing polyvinyl chloride by acetylene hydrochlorination mainly include noble metal catalysts, non-noble metal catalysts and non-metal cat...

AI Technical Summary

Problems solved by technology

[0010] (2) The recovered inactivated non-precious metal vinyl chloride catalyst carrier is used for secondary use in soil remediation agents. The soil remediation agent can overcome the short action time and cannot maintain the excellent performance of the soil for a long time after the first remedial action is successful. , cannot prevent the problem of late decline in soil properties