Method for preparing novel catalyst used for hydrochlorination of acetylene

Abstract

The invention provides a novel method for preparing a low-mercury catalyst applied to a reaction for preparing chloroethylene from acetylene. In the method, various molecular sieves such as 13X, MCM-41 are respectively adopted as carriers, an active component mercuric chloride is loaded on the carriers, various metal compounds serving as aids are added in the preparing process, and finally the novel catalyst is obtained by drying. The method is characterized in that: the molecular sieves are adopted as the carriers for preparing the catalyst, the process is simple, the production cycle is short, the used raw materials are safe and environment-friendly, and the required equipment has low cost. The molecular sieves are adopted as the carriers, and the mercuric chloride and other aids can enter pores of the molecular sieves and be on skeletons of the molecular sieves, so the active component is firmly combined with the carriers, and the prepared catalyst has long service life and high stability.

Description

technical field [0001] The invention proposes a new method for a low-mercury catalyst applied to the reaction of preparing vinyl chloride from acetylene. The method uses 13X, MCM-41 and other molecular sieves as carriers respectively, loads the active component mercuric chloride on the carrier, and adds a variety of metal compounds as auxiliary agents during the preparation process, and finally dries to obtain a new catalyst; The invention is characterized in that molecular sieve is used as the carrier prepared by the catalyst, the process is simple, the production cycle is short, the raw materials used are safe and environment-friendly, and the required equipment cost is low. Molecular sieve is used as the carrier, and mercury chloride and other additives can enter the pores and skeleton of the molecular sieve, so that the active components are firmly combined with the carrier, and the prepared catalyst has a long service life and good stability. Background technique [00...

AI Technical Summary

Problems solved by technology

Although the post-treatment process of the reaction process is simple and the industrial technology is mature, the domestic mercury reserves have declined sharply in recent years, which has seriously hindered the production of the catalyst. In addition, the rapid sublimation of mercuric chloride not only leads to short service life of the catalyst, high consumption, but also harms the environment. cause great harm to human