Device for synthesizing vinyl chloride through two-stage reaction of mercury-free catalyst

• Main Authors: LIU DAJUN, ZONG LIGUO, WANG HONGYI, SUN BO, XU WENJIA, JU GUODONG
• Format: Patent
• Language: Chinese; English
• Published: 30.04.2024
• Subjects: ACYCLIC OR CARBOCYCLIC COMPOUNDS; CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY; CHEMISTRY; METALLURGY; ORGANIC CHEMISTRY; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; SEPARATION; THEIR RELEVANT APPARATUS; TRANSPORTING

The utility model provides a device for synthesizing vinyl chloride by two-stage reaction of a mercury-free catalyst, which takes acetylene and hydrogen chloride as reaction raw materials and takes gold chloride as a catalyst. The device comprises a raw material pretreatment system, a conversion system, a purification system, a rectification and refining system and a tail gas treatment system. The synthesis method comprises five processes of raw material gas pretreatment, conversion reaction, VCM purification, VCM rectification and tail gas treatment. According to the utility model, the design and verification of the whole two-section reaction system are realized from the perspective of industrial engineering, and the actual demand of synthesizing vinyl chloride by using a mercury-free catalyst is met. 本实用新型提供了利用无汞触媒两段反应合成氯乙烯的装置，以乙炔和氯化氢为反应原料，以氯化金作为催化剂。其中，装置包括原料预处理系统、转化系统、净化系统、精馏和精制系统以及尾气处理系统。其合成方法包括原料气预处理、转化反应、VCM净化、VCM精馏以及尾气处理五个工序。本实用新型从工业工程角度出发实现了整个两段式反应系统的设计和验证，满足了无汞触媒合成氯乙烯的现实需求。