Isobutene is an important organic chemical raw material. Yanshan branch, BRICI engages in the research of preparation of isobutene by isomerization of n-butene, and has acquired more than 10 national invention patents. This technology can effectively convert n-butene in etherified C4 to isobutene by using YZ catalyst which uses molecular sieve as the main component, it possesses high conversion of n-butene and high yield of isobutene, the comprehensive technical indexes have reached the international advanced level. This technology has been successfully applied for many times.

‍‍Fig.200kt/a isomerization plant‍‍