What are the best and latest domestic and international technologies for the advanced processing of mixed C4?

1. Production of maleic anhydride. 2. 1,4-Butanediol (BDO) can be produced; there are three process routes in China: the alkyne-aldehyde method (Reppe method), the maleic anhydride method, and the Geminox new process (one-step method). 3. Petroleum resin can be obtained from mixed C4 hydrocarbons when the olefin content is above 95%. This product can be used to modify synthetic rubber, and it finds wide application in industries such as pressure-sensitive adhesives, hot-melt adhesives, and printing inks. 4. Separation and dehydrogenation are used to produce butadiene, which is a fundamental raw material in the organic chemical industry and finds wide applications in fields such as resins and rubber. 5. Isobutylene separated from it can be used to produce MTBE, tert-butanol, etc., and is utilized in the manufacture of fragrances, coatings, solvents, rubber, and more

One more thing: 1 can be reprocessed to produce propylene

Produces propylene; additionally, it is used as an isomer for blending into high-octane gasoline

Is there domestic technology for producing propylene through reprocessing?

Which domestic manufacturers are using mixed C4 on an industrial scale?

Olefin disproportionation to produce propylene. Is mixed C4 for sale? We need isobutylene, butene-1, and butene-2.

The carbonylation of butadiene to produce adipic acid has certain prerequisites! ! However, research progress at home and abroad is slow at present!

C4 cracking is used to produce olefins, primarily propylene; Yuhuang Chemical is building a new facility that will come online in October this year

What technology is this from? What scale? Thank you!