摘要:
The present invention relates to a process for oxidative coupling of methane (OCM, 100) comprising the steps of feeding methane (104) and at least one oxidizing agent (103), preferably oxygen, into at least one OCM reactor (101) comprising at least one OCM catalyst, wherein C 2+ alkene is generated from methane by the OCM catalyst; wherein at least part of the methane (104) is provided by at least one methanation unit (111), in which hydrogen and carbon dioxide are reacted to methane, wherein at least part of the hydrogen fed to the methanation unit (111) is provided from a hydrogen stream (211) generated in a propane dehydrogenation process (200), and/or wherein ethane (105) is fed into the at least one OCM reactor (101) comprising further at least one cracking unit, wherein C 2+ alkene is generated from ethane in the cracking unit, wherein at least part of the ethane (105) is provided from ethane (213) generated in a propane dehydrogenation process (200). The invention also relates to a process system for such a process.
摘要:
The presently disclosed subject matter relates to methods and systems for alkane dehydrogenation. In a particular non-limiting embodiment, the presently disclosed subject matter provides a system for the dehydrogenation of alkanes that includes two or more reactors configured to perform a dehydrogenation reaction of an alkane in the presence of a catalyst to produce an olefin and a catalyst regenerator, coupled to each of the two or more reactors through at least one transfer line to a regenerator, for the regeneration of spent catalyst.
摘要:
A dehydrogenation catalyst is formed by forming a mixture comprising a bayerite aluminum hydroxide (Al(OH)3), a lanthanum (La) source, a cerium (Ce) source, a barium (Ba) source, a zirconium (Zr) source, and water into a shaped body. The shaped body is calcined at a temperature of at least 750 C to form a catalyst support. The catalyst support is treated with a dehydrogenation catalyst component to form a treated catalyst support containing the dehydrogenation catalyst component. The treated catalyst support is then calcined. The resulting catalyst composition may be used by contacting a paraffin hydrocarbon feed with a catalyst within a reactor in the presence of steam under dehydrogenation reaction conditions suitable to form dehydrogenated hydrocarbon products.
摘要:
본 발명은 파라핀계 탄화수소류의 탈수소 반응의 촉매에 있어서, 3차원적 메조/메크로 기공을 갖는 스폰지형 알루미나 담체를 사용하고, 이에 활성금속을 직접 담지시켜 물질의 확산저항이 줄어들고, 구조적으로 안정할 뿐 아니라, 담체 내 활성금속의 분포를 극대화하여 올레핀의 전환율 및 선택도를 크게 증가시키는 촉매와 그 제조방법을 제공하는 것이다. 본 발명은 스폰지 형태의 알루미나 담체를 이용하여 직접 활성금속을 담지하여 3차원적으로 메조/메크로의 거대기공이 서로 연결된 담체 내부에 활성금속층으로 구성된 탈수소화 반응용 촉매 제조방법을 제공하는 것이다.
摘要:
L'invention décrit un procédé de déshydrogénation d'une charge d'hydrocarbures contenant au moins une molécule ayant au moins 2 atomes de carbone et au moins une liaison C-C simple ou double en présence d'un photocatalyseur hétérogène sous irradiation comprenant les étapes suivantes : a) on met en contact ladite charge d'hydrocarbures avec un photocatalyseur hétérogène, b) on irradie le photocatalyseur hétérogène par au moins une source d'irradiation produisant au moins une longueur d'onde adaptée à l'activation dudit photocatalyseur de manière à déshydrogéner ladite charge d'hydrocarbures en présence dudit photocatalyseur activé par ladite source d'irradiation pour transformer ladite molécule de la charge ayant au moins ladite liaison C-C simple ou double en molécule ayant un degré d'insaturation supérieur de ladite liaison C-C, de manière à obtenir un effluent contenant au moins une molécule au moins partiellement déshydrogénée et de l'hydrogène, les étapes a) et b) étant effectuées en absence de dioxygène.
摘要:
A liquid phase dehydrogenation process is described. The process includes reacting a liquid feed stream containing C 10 to C 28 paraffins and dissolved hydrogen in a dehydrogenation reaction zone in the presence of a dehydrogenation catalyst under liquid dehydrogenation conditions to dehydrogenate the paraffins to form a liquid dehydrogenation product stream comprising monoolefins, unreacted paraffins, and hydrogen, wherein the monoolefins in the product stream have 10 to 28 carbon atoms.
摘要:
A catalyst composition useful for the dehydrogenation of hydrocarbon comprises components (A) - (G). Component (A) is a catalyst substrate. (B) is platinum. (C) is at least one of germanium, tin, lead, gallium, indium, and titanium. (D) is phosphorus, the total amount of component (D) being at a level of 1 wt.% to 3 wt.%. (E) is at least one of magnesium, calcium, strontium, barium, radium, and a lanthanide, the total amount of component (E) being at a level of 0.1 wt.% to 5 wt.%. (F) is chloride at a level of 0.1 wt.% to 2 wt.%. Component (G) is manganese. The catalyst may be used in the conversion of hydrocarbons wherein a hydrocarbon feed is contacted with the catalyst within a reactor under hydrocarbon conversion reaction conditions to form hydrocarbon conversion products. Sources of the various components are combined in a method to form the catalyst composition.
摘要:
A process is presented for the management of sulfur on a catalyst. The catalyst is a dehydrogenation catalyst, and sulfur accumulates during the dehydrogenation process. Sulfur compounds are stripped from the spent catalyst and the catalyst is cooled before the regeneration process. The process includes controlling the amount of sulfur that needs to be removed from the catalyst before regeneration.
摘要:
The present invention provides a dehydrogenation catalyst composite that is capable of providing a dehydrogenated hydrocarbon product characterized by a bromine number of at least 19. for hydrocarbons. The dehydrogenation catalyst of the present invention comprises a nano-sized complex containing a Group VIII component; a group IVA component and a sulfur containing capping agent; an alkali component; a halogen component; and a support with an inner core of alpha alumina and an outer layer comprising a mixture of gamma alumina and delta alumina.
摘要:
A process and system for dehydrogenating certain hydrocarbons is disclosed. The process includes contacting a dehydiogenatable hydrocarbon with steam in the presence of a dehydrogenation catalyst to form hydrogen and a dehydrogenated hydrocarbon. Some of the hydrogen is then removed and some of the remaining dehydrogenatabie hydrocarbon is dehydrogenated.