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    Metal seat butterfly valve
    94.
    发明授权
    Metal seat butterfly valve 失效
    金属座椅蝶阀

    公开(公告)号：US3834663A

    公开(公告)日：1974-09-10

    申请号：US20633771

    申请日：1971-12-09

    Applicant: JAMESBURY CORP

    Inventor： DONNELLY J

    IPC: F16K1/226 ,  C10L1/14 ,  C10L1/18 ,  C10L1/30 ,  F16K1/228 ,  F16K1/22

    CPC classification number: F16K1/2285 ,  C10L1/14 ,  C10L1/1814 ,  C10L1/182 ,  C10L1/1828 ,  C10L1/188 ,  C10L1/306

    Abstract: Disclosed is a butterfly valve particularly adapted for service with high pressure and high temperature fluids, and fluids containing suspended solids such as slurries. A butterfly valve is provided with a metal seat ring having a curved metal lip that is adapted to contact the peripheral surface of the valve disc. The metal seat has a configuration that enables fluid pressure from one side of the valve to enhance the sealing effectiveness of the valve. The lip of the seat is positioned to provide an interference fit with the periphery of the disc when the valve is closed, so that the valve is capable of sealing fluid from either side of the disc over a portion of the pressure rating of the valve.

    Abstract translation: 公开了一种特别适用于高压和高温流体以及含有悬浮固体如浆料的流体的蝶形阀。 蝶阀具有金属座圈，该金属座圈具有弯曲的金属唇缘，该弯曲的金属唇缘适于与阀盘的周面相接触。 金属座具有能够使阀的一侧的流体压力提高阀的密封效果的结构。 座椅的唇部被定位成当阀门关闭时与盘的周边形成过盈配合，使得阀能够在阀的压力等级的一部分上从盘的任一侧密封流体。

    Hydrocarbon lead production
    100.
    发明授权
    Hydrocarbon lead production 失效
    油气生产

    公开(公告)号：US3431185A

    公开(公告)日：1969-03-04

    申请号：US3431185D

    申请日：1964-06-22

    Applicant: ETHYL CORP

    Inventor： ROBINSON GENE C

    IPC: C07F7/24 ,  C10L1/30 ,  C25B3/12 ,  B01K1/00

    CPC classification number: C07F7/24 ,  C10L1/306 ,  C25B3/12

    Abstract: 1,112,921. Tetrahydrocarbon leads. ETHYL CORPORATION. 11 May, 1965 [11 May, 1964 (2)], No. 19925/65. Heading C2J. [Also in Division C5] An anti-knock composition comprises a mixture of tetrahydrocarbon leads of the following formulµ: PbR 4 , PbR 3 R 1 , PbR 1 3 R 2 , PbRR 1 3 and PbR 1 4 wherein R is an alkyl group, preferably of 1 to 4 carbon atoms and R 1 is an alkenyl group preferably of 2 to 10 carbon atoms. The relative amount of each compound in the mixture is according to a statistical distribution of the hydrocarbon groups among the tetrahydrocarbon leads or within 7% thereof. There are preferably two to four different groups R and R 1 . R 1 may constitute 25 to 75% of the groups R and R 1 . The composition may be prepared by contacting a compound of the formula PbR n R 1 (4-n) , n= 1, 2 or 3, or a mixture of at least two compounds of the formula PbR x R 1 (4-x) , x=0, 1, 2, 3 or 4 with a catalyst the compounds being such that both R and R 1 are in the mixture. The catalyst may be used in the amount 0À1 to 5% wt. of the total weight of reactants and may be an activated aluminosilicate, e.g. zeolite, or active Al 2 O 3 , AlCl 3 , (Et) 2 Zn, ZaF 2 , (Me) 2 AlCl, ZrCl 4 , PCl 3 , FeCl 3 or Me 3 Al 2 Cl 3 . The reaction may be carried out from below 0‹ C. up to the decomposition temperature of the tetrahydrocarbon lead, e.g. at 20‹ to 70‹ C. The composition may also be prepared by reacting a Pb salt, Pb oxide or sulphide under anhydrous conditions with a mixture of at least two Grignard reagents, the mixture containing both R and R 1 . This reaction temperature may be 20‹ to 120‹ C., the pressure may be 0À2 atm. to 2000 p.s.i. The composition is recovered by washing, filtering and distilling the filtrate. A desensitizing agent, e.g. toluene, naphthalene and alkylated phenols, may be added before recovery. The Grignard reagents may be methyl or ethyl magnesium chloride and vinyl magnesium chloride.

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