摘要:
The present invention provides in a method for producing propylene from a hydrocarbon raw material containing ethylene in an amount exceeding 50% by mass under the co-existence of water, a method for producing propylene stably over a long term from ethylene in a high yield and with the reaction/regeneration repeated. A method for producing propylene includes a step for catalytically converting a hydrocarbon raw material containing ethylene in an amount exceeding 50% by mass with a zeolite-containing catalyst while supplying water, wherein a zeolite contained in the zeolite-containing catalyst satisfies (1) to (3) shown below; (1) the zeolite is an MFI zeolite, (2) a zeolite crystallization index obtained from an X-ray diffraction spectrum is 3.3 or more, and (3) a molar ratio of silica/alumina (SiO2/Al2O3) is 20 to 300.
摘要翻译:本发明提供一种在水共存下含有乙烯量超过50质量%的烃类原料的丙烯的制造方法,从高产率从乙烯长期稳定生产丙烯的方法,以及 反应/再生重复。 丙烯的制造方法包括使含有沸石的催化剂同时供给水催化转化含有乙烯量超过50质量%的烃原料的工序,其中含有沸石的催化剂中所含的沸石满足(1)〜 (3)如下所示; (1)沸石是MFI沸石,(2)从X射线衍射光谱获得的沸石结晶指数为3.3以上,(3)二氧化硅/氧化铝(SiO 2 / Al 2 O 3)的摩尔比为20〜300 。
摘要:
The present invention provides in a method for producing propylene from a hydrocarbon raw material containing ethylene in an amount exceeding 50% by mass under the co-existence of water, a method for producing propylene stably over a long term from ethylene in a high yield and with the reaction/regeneration repeated. A method for producing propylene includes a step for catalytically converting a hydrocarbon raw material containing ethylene in an amount exceeding 50% by mass with a zeolite-containing catalyst while supplying water, wherein a zeolite contained in the zeolite-containing catalyst satisfies (1) to (3) shown below; (1) the zeolite is an MFI zeolite, (2) a zeolite crystallization index obtained from an X-ray diffraction spectrum is 3.3 or more, and (3) a molar ratio of silica/alumina (SiO2/Al2O3) is 20 to 300.
摘要翻译:本发明提供一种在水共存下含有乙烯量超过50质量%的烃类原料的丙烯的制造方法,从高产率从乙烯长期稳定生产丙烯的方法,以及 反应/再生重复。 丙烯的制造方法包括使含有沸石的催化剂同时供给水催化转化含有乙烯量超过50质量%的烃原料的工序,其中含有沸石的催化剂中所含的沸石满足(1)〜 (3)如下所示; (1)沸石是MFI沸石,(2)从X射线衍射光谱获得的沸石结晶指数为3.3以上,(3)二氧化硅/氧化铝(SiO 2 / Al 2 O 3)的摩尔比为20〜300 。
摘要:
A serpentine heat exchanger includes a tube formed by bonding two press-molded tube sheets and folded back in a serpentine shape, and a corrugated fin arranged in a space enclosed by the tube that is folded-back. An inside of a folded-back portion of the tube includes a plurality of protrusions at a distance from one another, the protrusions protruding from one tube sheet and contacting the other tube sheet.
摘要:
[Task] It is an object of the present invention to provide a vehicle battery cooling device even if a situation that cannot be compensated by ordinary cooling means occurs, the efficient cooling is performed and a battery temperature can be stabilized.[Means for Solving] A cooling system of a heat exchanger 18 and a cooling system of a sub radiator 12 are provided to perform the cooling of high-power battery 6. A battery controller 31 which processes the information such as a temperature sensor 33 and so forth switches the device to perform the cooling of high-power battery 6 from the cooling system of heat exchanger 18 to the cooling system of sub radiator 12.
摘要:
A flexible hose for use as a refrigerant passageway in a vehicular refrigerating cycle has an inner hose and an outer hose. The outer hose covers the inner hose with a space formed in a given distance. The outer hose and the inner hose are formed of resin having flexibility.
摘要:
A forked part structure of a double pipe has an outer pipe, an inner pipe, a branch pipe and an open end portion of the outer pipe. The open end portion of the outer pipe has a substantially tubular inner pipe supporting portion to which the inner pipe is brazed, and a substantially tubular branch pipe supporting portion to which the branch pipe is brazed. The inner pipe supporting portion is located inward of a main portion of the outer pipe along an extending direction of the main portion of the outer pipe.
摘要:
It is an object of the present invention to provide an improved process whereby the yield structure of the components can be varied by a simple method, and the products can be produced stably and efficiently in a process for producing propylene and aromatic hydrocarbons from a hydrocarbon feedstock containing C4-12 olefins using a medium pore diameter zeolite-containing catalyst. A process for producing is disclosed which comprises a propylene production step wherein a specific zeolite catalyst is used to remove a C4+ hydrocarbon component from a reaction mixture, and part of the hydrocarbon component is recycled as necessary without modification, and an aromatic hydrocarbon production step wherein all or a part of the C4+ hydrocarbon component is used as the raw material.
摘要:
The invention is to provide a catalyst for long-term, high-yield and stable production of ethylene and propylene in an efficient and simple method of catalytic conversion from a hydrocarbon material. The invention relates to a method for producing ethylene and propylene by contacting a hydrocarbon material that contains an olefin having from 4 to 12 carbon atoms in an amount of at least 20% by weight, with a zeolite-containing shaped catalyst satisfying the following requirements (1) to (4), in a reactor for catalytic conversion of that olefin: (1) the zeolite is an intermediate pore-size zeolite having a pore size of from 5 to 6.5 angstroms, (2) the zeolite does not substantially contain a proton, (3) the zeolite contains at least one metal selected from the group consisting of metals belonging to the Group IB of the Periodic Table, (4) the zeolite has a silica/alumina molar ratio (SiO2/Al2O3 molar ratio) of from 800 to 2,000.
摘要翻译:本发明提供一种用于从烃类材料进行催化转化的有效且简单的方法中长期,高产率和稳定地生产乙烯和丙烯的催化剂。 本发明涉及一种生产乙烯和丙烯的方法,该方法是将含有至少20重量%的含有4-12个碳原子的烯烃的烃材料与满足以下要求的含沸石成型催化剂 1)至(4)中,在该烯烃的催化转化反应器中:(1)沸石是孔径为5至6.5埃的中间孔径沸石,(2)沸石基本上不含有 质子,(3)沸石含有选自属于元素周期表第IB族的金属中的至少一种金属,(4)沸石的二氧化硅/氧化铝摩尔比(SiO 2 / Al 2 O 3摩尔比)为 800至2,000。
摘要:
A structure connects a first member and a second member. The first member has a peripheral wall portion that includes a stepped portion that is engaged with the second member. The peripheral wall portion is a deformed portion that is deformed inwardly of the stepped portion of the first member. The deformed portion has a thin shape that is provided by a cut section of the peripheral wall portion.
摘要:
The invention relates to a receiver-drier for use in an air conditioning system. This receiver-drier has (a) a lower portion defining a lower chamber in the receiver-drier; (b) an upper portion defining an upper chamber in the receiver-drier; and (c) a strainer for removing foreign particles from the refrigerant. The lower portion has an inlet for allowing the refrigerant to flow into the lower chamber and an outlet for allowing the refrigerant to flow out of the lower chamber. Each of the inlet and the outlet is formed at a bottom of the lower portion. The upper chamber is on top of the lower chamber and is charged with a desiccant for removing moisture from the refrigerant. The strainer is disposed at a position in a flow of the refrigerant from the inlet to the outlet.