摘要:
A process and catalyst are presented for the selective hydrogenation of branched diolefins and acetylenes to olefins. The process uses a catalyst having large pores, and a minimal amount of micropores. The catalyst is designed to have minimal diffusional resistance through the large pores, and to minimize the hydrogenation of olefins to paraffins.
摘要:
The present process provides a method for converting an oxygenate-containing feed stream to an olefin-containing product stream. The method includes: (1) providing a first fluidized catalytic reactor for converting methanol to propylene, the first reactor having a fluidized catalyst system comprising a first catalyst and a second catalyst; (2) providing a second fluidized catalytic reactor communicating with the first fluidized catalytic reactor for cracking heavy olefins having four carbon atoms or greater into propylene, the second reactor having the fluidized catalyst system; (3) providing an oxygenate containing feed to the first reactor; and (4) fluidizing the catalyst system with the oxygenate containing feed.
摘要:
An improved processing system of an oxygenate-containing feedstock for increased production or yield of light olefins. Such processing involves oxygenate conversion to olefins and subsequent cracking of heavier olefins wherein at least a portion of the products from each of the reactors is elevated in pressure, using a common compressor, prior to being routed to a common product fractionation and recovery section. The system further comprises acid gas removal means to remove acid gases from the cracked product gas and that the olefin cracking reactor is a moving bed reactor.
摘要:
One exemplary embodiment can be a layered catalyst for use in a selective hydrogenation of acetylenes and diolefins to olefins. The layered catalyst may include an inner core having an inert material, an outer layer including a metal oxide bonded to the inner core, and a metal deposited on the outer layer. Generally, the metal is an IUPAC Group 8-10 metal and the layered catalyst has an accessibility index of about 3- about 500.
摘要翻译:一个示例性实施方案可以是用于将烯烃和二烯烃选择性氢化成烯烃的层状催化剂。 层状催化剂可以包括具有惰性材料的内芯,包含结合到内芯的金属氧化物的外层和沉积在外层上的金属。 通常,金属是IUPAC Group 8-10金属,层状催化剂具有约3-约500的可达性指数。
摘要:
A process for increasing light olefin yields from the fluidized catalytic cracking process. The process combines small units to treat the paraffinic components in the product streams from the fluidized cracking process. The paraffins are dehydrogenated and light olefins are separated. Heavier olefins are passed to an olefin cracking unit for increasing the yields of ethylene and propylene.
摘要:
Processes for the conversion of both straight- or branched-chain (e.g., paraffinic) as well as cyclic (e.g., naphthenic) hydrocarbons of a hydrocarbon feedstock into value added product streams are disclosed. The processes involve the use of both dehydrogenation and olefin cracking to produce both light olefins and aromatics in varying proportions depending on the feedstock composition and particular processing scheme. The processes are especially applicable to naphtha feedstocks comprising paraffins and naphthenes in the C5-C11 carbon number range.
摘要:
The present invention provides a reactor system for converting an oxygenate-containing feed stream to an olefin-containing product stream. The system includes: (1) a first fluidized catalytic reactor for converting methanol to propylene, the first reactor having a fluidized catalyst system comprising a first catalyst and a second catalyst; (2) a second fluidized catalytic reactor communicating with the first fluidized catalytic reactor for cracking heavy olefins having four carbon atoms or greater into propylene, the second reactor having the fluidized catalyst system; (3) wherein the first catalyst is a non-zeolite molecular sieve catalyst; and (4) wherein the second catalyst is a zeolite molecular sieve catalyst.
摘要:
Improved processing of an oxygenate-containing feedstock for increased production or yield of light olefins. Such processing involves oxygenate conversion to olefins and subsequent cracking of heavier olefins wherein at least a portion of the products from each of the reactors is elevated in pressure, using a common compressor, prior to being routed to a common product fractionation and recovery section. In one particular embodiment, the cracked product gas can be treated to remove acid gas therefrom. In another embodiment, the olefin cracking reactor is a moving bed reactor.
摘要:
Integrated processes for making detergent range alkylbenzenes from C5-C6-containing feeds involve feed pretreatment and/or selective hydrogenation to enable acceptable quality alkylbenzene production at attractive capital and operating costs.
摘要:
An apparatus for contacting a bed of particulate material with a cross flowing fluid, which maintains the bed of particulate material within a retention volume. The apparatus includes partitions for retaining particles, with apertures disposed within the partitions. The apertures are covered by louvers that extend above the edges of the apertures to prevent solid particles from spilling through inlet apertures.