TH72747B - Production of Propylene from butane - Google Patents

Abstract

DC60 (07/09/54) This invention relates to the combined process for the productive production of olefins. (olefins) from C4 stock feed containing butane (butane), and especially Related to Methods of producing propylene (propylene) and butadiene (butadiene) processes combine good units. Hydrogenation (dehydrogenation unit) with the changing unit of olefin To replace the butane Feedstock to propylene and butadiene products Catadiene-OCT process The combined catadiene-OCT produces the yield of propylene from normal butane. In excess of 70%, the invention involves the combined process for the effective production of olefins. (olefins) from C4 stock feed containing butane (butane), and especially Related to Methods of producing propylene (propylene) and butadiene (butadiene) processes combine good units. Hydrogenation (dehydrogenation unit) with an olefin-altered unit. To replace the butane Feedstock to propylene and butadiene products Catadiene-OCT process The combined catadiene-OCT produces the yield of propylene from normal butane. In an amount that is more than enough 70%

Claims (1)

Claims (all) which will not appear on the classifieds page. :------31/05/2018------(OCR) Page 1 of 2 Pages Claims 1. The process for producing olefins consists of steps of: ( a) feeding a stream containing butane into the dehydrogenation unit a dyhydrogenation unit with a catalyst for the conversion of butane to butane and butadiene to produce a stream of products of the dehydrogenation unit; (b) The entry of the product stream of the butadiene extraction stage into the butadiene extraction unit that will produce the butadiene product stream and the stream. of the raffinate (raffinate stream); (c) raffinate stream feed Enter the selected hydrogenation unit set up to change. butadiene to butene to produce the product stream of the selected hydrogenation unit; (d) the input of the product stream of the selected hydrogenation unit and the stream consisting of the ethylene (ethylene) conversion unit to the olefins to be reactive. with Ethylene forms propylene (propylene); and (e) recovery of propylene 2. The process of claim 1, which also includes the process of recycling unprocessed butene. The reaction from the olefin conversion unit into the dehydrogenation unit 3. The process for the production of olefins consists of the steps of: (a) inrush containing butane. to dehydrogenation units with catalysts for Conversion of butane to butene and butadiene to produce streams of products of dehydrogenation units; (b) the entry of the product stream of the dehydrogenation unit into the butadiene extraction unit. to produce a stream of butadiene products and a stream of raffinate containing butene and butadiene residues; (c) Feeding the raffinate stream into the selected hydrogenation unit. that can change butadiene dissipated to butene to produce a stream of products of the selected stage hydrogenation unit; (d) Entering the product stream of the selected hydrogenation unit. into a deisobutenizer capable of separating isobutane and isobutene from the unit product stream. Hydrogenation to produce a stream of isobutane/isobutene and product streams in the DEISOBUTE TENIZER; (e) Entering the product stream of the disobutenizer unit. and an input stream containing Ethylene-conversion unit to olefin that can react with butene with ethylene, forming propylene as a stream of product of o-conversion unit. Lefin; and page 2 of number 2. (f) recovery of propylene from the product stream of olephene-transformed unit 4. Claim process 3, which also includes the steps of: ( g) The raffinate stream is fed into a deoiler unit capable of removing C6+ hydrocarbons from the raffinate stream before the raffinate stream is fed into the deoiler unit. selected hydrogenation units 5. The process of claim 3, which also consists of steps of: (g) recycling of unreacted butene from olein transformed units into Dehydrogenation Unit ------------ 1. The process for producing olefins consists of steps of: (a) feeding the stream Contains butane (butane) into the dehydrogenation unit. (dyhydrogenation unit with a catalyst for converting butane to butane and butadiene to produce a product stream of dehydrogenation unit; (b) Entering the product stream of the dehydrogenation unit. Enter the butadiene extraction unit to produce a stream of butadiene product. and raffinate stream; (c) raffinate stream feed. enter the selected hydrogenation unit set up to convert butadiene to butane to produce a stream of products of the hydrogenation unit; (d) Entering the product stream of the selected hydrogenation unit. and the current that contains The unit that converts ethylene to olefin reacts with butene to ethylene to form propylene; and (e) recovery of propylene.