【3D Process Flow】Summary Post -- Butane Industry Chain

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【3D Process Flow】Summary Post – Useful for learning about the process flow: https://bbs.hcbbs.com/thread-5711616-1-1.html ---------------------------------------------------------- The C4 industry chain is a chemical product processing system that uses C4 fractions as raw materials; its key raw materials come from by-products of catalytic cracking/pyrolysis units in refineries or from by-products of ethylene production facilities. The industrial chain is based on four key components: butadiene, isobutylene, n-butylene, and n-butane, and it is extended through processes such as separation, isomerization, alkylation, hydration, oxidation, and polymerization. The main processes include: 1) Butadiene extraction (using DMF, ACN, NMP methods) to produce synthetic rubber/resin monomers ； 2) MTBE/ETBE synthesis (etherification of isobutylene with methanol/ethanol) as a gasoline additive ； 3) Alkylation (isobutylene and isobutane) to produce high-octane gasoline components ； 4) Hydration of n-butylene to sec-butanol/dehydrogenation to butadiene ； 5) Oxidation of n-butane to maleic anhydride/dehydrogenation to butylene/butadiene. The products in the industrial chain include synthetic rubbers (BR, SBR), engineering plastics (ABS, SBS), fine chemicals, and components used in the formulation of high-octane gasoline.