Abstract:

The utilization of abundant C₄ resources in China is mainly in olefins. This paper introduces the sources, production and the main utilization ways of C₄ hydrocarbons in China. In order to meet the stringent environmental requirements, most merhyl tert-butyl ether （MTBE） plants in China will be shut down soon. The superposition-hydrogenation process is a new technology to replace the MTBE one in the production of isooctane. According to different reaction principles of the superposition-hydrogenation processes, this paper comprehensively analyzes the technological characteristics, catalyst types and key indicators of several typical industrial superposition-hydrogenation processes. The research progress of superposition-hydrogenation catalysts is deeply discussed and the development prospects and shortcomings of current superposition-hydrogenation processes are reviewed. The research shows that the superposition-hydrogenation is an important way to deal with the surplus of C₄ hydrocarbon resources, and to improve the quality of gasoline.

Key words: C₄ hydrocarbon, isobutene, superposition-hydrogenation process, isooctane, superposition catalyst, hydrogenation catalyst

摘要：

我国C₄资源非常丰富，其利用主要集中在烯烃。本文介绍了国内C₄烃的来源、产量以及主要的利用途径。为了满足严苛的环保要求，国内大部分甲基叔丁基醚（MTBE）装置即将停产，采用叠合-加氢工艺生产异辛烷是取代MTBE的新技术路线。本文从叠合-加氢工艺的反应原理入手，针对国内外几种典型的已工业化应用的叠合-加氢工艺，从工艺技术特点、催化剂类型、产品的关键指标进行了综合分析；对叠合-加氢催化剂的研究进展进行了深入研究；对叠合-加氢工艺的发展前景进行了评述；针对叠合-加氢工艺目前存在的不足提出了今后研究方向。通过研究表明，叠合-加氢工艺是当下应对C₄烃资源过剩、提高汽油质量、提高国内C₄烃综合利用的重要途径。

关键词: C₄烃, 异丁烯, 叠合-加氢工艺, 异辛烷, 叠合催化剂, 加氢催化剂