TH121152A - 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)

Disclaimer (all) which will not appear on the advertisement page. : ------ 31/05/2018 ------ (OCR) Page 1 of 2 pages Disclaimer 1. The process for the production of olefins that consists of the steps of: ( a) Feeding a stream containing butane to the dehydrogenation unit. (dyhydrogenation unit) with catalyst for converting butane to butene and butadiene to produce the product stream of the dehydrogenation unit; (b) The input of the product stream of the butadiene step-down into a butadiene extraction unit that will produce the stream of the butadiene product and the stream. Of raffinate stream; (c) Raffinet stream input Enter the selected hydrogenation unit that is established to replace 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 containing the ethylene-to-olefin converting unit. With Ethylene is formed as propylene; And (e) propylene recovery 2. Process of claim 1, which also consists of a process of recycling the butene that has not been made. The reaction from olein-converted to dehydrogenation unit 3. The process for the production of olefins consists of the steps of: (a) the input of the current containing butane into To dehydrogenation unit with catalyst for Conversion of butane to butene and butadiene To produce a product stream of the dehydrogenation unit; (b) The feeding of the product stream of the dehydrogenation unit into the butadiene extraction unit. To produce a stream of butadiene products And streams of raffinate containing butene and residual butadiene; (c) Feeding of the raffinate stream into the selected hydrogenation unit. That can change Butadiene that has dropped to butene To produce a product stream of the selected stage of hydrogenesis; (d) The product stream input of the selected hydrogenation unit. It enters the deisobutenizer that can separate isobutane and isobutene from the product stream of the unit. Hydrogenation To produce isobutene stream / isobutene And the stream of products in a Deisobutilizer; (e) The product stream input of the Deisobilizer unit. And an input stream containing Ethylene-converted-to-olefin-reactive unit with ethylene, the resulting propylene is the stream of the product of the O-transforming unit. Lefin; And page 2 of the number 2. (f) Propylene recovery from the product stream of an olfactory-altered unit 4. The process of claim 3, which also consists of the steps of: ( g) The feeding of the raffinate stream into the deoiler unit capable of removing C6 + hydrocarbons from the raffinate stream before feeding the raffinate stream into the deoiler. Selected Hydrogenation Unit 5. The process of claim 3, which also consists of a procedure of: (g) the recycling of unreactive butene from the oleanified unit into Dehydrogenation unit ------------ 1. The process for producing olefins that consists of the steps of: (a) feeding a stream containing butane into the dehydrogenation unit. (dyhydrogenation unit) with a catalyst for converting butane to butadiene and butadiene to produce the product stream of the dehydrogenation unit; (b) Dehydrogenation unit product stream input Enters the butadiene extraction unit that will produce a stream of butadiene product. And the raffinate stream; (c) feeding the raffinate stream. Enter the selected hydrogenation unit established to convert butadiene to butane, produce the product stream of the hydrogenation unit; (d) The product stream input of the selected hydrogenation unit. And the current containing A unit where ethylene to olefin is converted to react butene with ethylene to form propylene; And (e) propylene recovery.