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    • 5. 发明授权
    • Process for the production of unsaturated aliphatic nitriles
    • 生产不饱和脂肪硝酸盐的方法
    • US3869500A
    • 1975-03-04
    • US38500373
    • 1973-08-21
    • ASAHI CHEMICAL IND
    • KOMINAMI NAOYANAKAJIMA HITOSHIMIYATA SEIJIKIMURA TAKEOCHONO MASAZUMISAKURAI TOKIO
    • B01J23/40B01J23/44B01J23/56B01J23/58B01J23/63B01J37/20C07C121/04C07C121/02
    • B01J23/63B01J23/40B01J23/44B01J23/56B01J23/58B01J37/20C07C253/10Y02P20/52C07C255/08C07C255/07C07C255/10
    • Process for the production of unsaturated aliphatic nitriles selected from acrylonitrile, methacrylonitrile, crotononitrile, alpha-ethylacrylonitrile, beta-ethylacrylonitrile, alpha, betadimethylacrylonitrile, beta, beta-dimethylacrylonitrile, chloroacrylonitrile and fumaronitrile, which comprises contacting a gas mixture consisting essentially of an olefinic compound selected from ethylene, propylene, normal butylene, isobutylene and vinyl chloride, hydrogen cyanide and oxygen or a molecular oxygen-containing gas at a temperature of 100* to 500*C with a catalyst selected from palladium metal, chloride, bromide, iodide, cyanide, thiocyanide, oxide, hydroxide, sulfide, sulfate, nitrate, phosphate, hypochlorite, chlorite, chlorate, bromate, iodate, formate, acetate, mono-chloroacetate and oxalate which has been treated with a reducing sulfur compound at a temperature of from -10* to 1,200*C. The treatment with a reducing sulfur compound remarkably improves the catalytic life. Hydrogen sulfide and sulfur dioxide are especially preferred as reducing sulfur compound.
    • 用于生产选自丙烯腈,甲基丙烯腈,巴豆腈,α-乙基丙烯腈,β-乙基丙烯腈,α,β-二甲基丙烯腈,β,β-二甲基丙烯腈,氯丙烯腈和富马腈的不饱和脂族腈的方法,其包括将基本上由 选自乙烯,丙烯,正丁烯,异丁烯和氯乙烯的烯烃化合物,氰化氢和氧气或分子氧气体在100至500℃的温度下与选自钯金属,氯化物,溴化物,碘化物 ,氰化物,硫氰酸盐,氧化物,氢氧化物,硫酸盐,硝酸盐,磷酸盐,次氯酸盐,亚氯酸盐,氯酸盐,溴酸盐,碘酸盐,甲酸盐,乙酸盐,单氯乙酸盐和草酸盐,其在还原硫化合物的温度 -10℃〜1200℃。用还原硫化合物处理显着提高了催化剂的含量 fe。 特别优选硫化氢和二氧化硫作为还原硫化合物。
    • 9. 发明授权
    • Process for producing ethylenically unsaturated aliphatic nitriles
    • 生产乙烯不饱和脂肪酸硝基酯的方法
    • US3574701A
    • 1971-04-13
    • US3574701D
    • 1969-05-06
    • ASAHI CHEMICAL IND
    • KOMINAMI NAOYATAMURA NOBUHIRONAKAJIMA HITOSHI
    • B01J23/72B04B1/14B04B1/18C07C121/04
    • C07C253/10B04B1/18B04B11/06Y02P20/52C07C255/08C07C255/07
    • PROCESS FOR PRODUCING ETHYLENICALLY UNSATURATED ALIPHATIC NITRILES OF ACRYLONITRILE, METHACRYLONITRILE, CROTONITRILE, 1-CYANO-BUTENE-1, 2-CYANO-BUTENE-1, 2-CYANO-BUTENE-2 AND 1-CYANO-2-METHYL-PROPENE-1, BY REACTING AN OLEFINIC HYDROCARBON CONTAINING 2 TO 4 CARBON ATOMS I.E. ETHYLENE, PROPYLENE, NORMAL BUTYLENE AND ISOBUTYLENE WITH HYDROGEN CYANIDE AND OXYGEN OR A MOLECULAR OXYGEN CONTAINING GAS IN THE GASEOUS PHASE IN THE PRESENCE OF A CATALYST SELECTED FROM THE GROUP CONSISTING OF THE OXIDES OF RHODIUM SELECTED FROM THE GROUP CONSISTING OF RHO, RH2O3, RHO3 AND RHO2; THE HYDROXIDES OF PALLADIUM AND RHODIUM SELECTED FROM THE GROUP CONSISTING OF PD(OH)2, PD(OH)4, RH(OH)3 AND RH(OH)4; THE CHLORIDES OF PALLADIUM AND RHODIUM SELECTED FROM THE GROUP CONSISTING OF PDCL, PDCL2, PDCL3, PDCL4, RHCL2 AND RHCL3; THE BROMIDES OF PALLADIUM AND RHODIUM SELECTED FROM THE GROUP CONSISTING OF PDBR2 AND RHBR3; THE NITRATES OF PALLADIUM AND RHODIUM SELECTED FROM THE GROUP CONSISTING OF PD(NO3)2 AND RH(NO3)3; PD(CH)2 AND PD(OCOCH3)2 AT A TEMPERATURE OF 200*C.
    • 用于间歇排放污泥的离心分离器。 分离鼓的一个端部构件是垂直移动的阀活塞封闭件,以便打开和关闭设置在滚筒外周处的污泥排放喷嘴。 阀活塞关闭形成滚筒中污泥室的一端。 在污泥室的径向向内,盖子安装在分离器鼓中,覆盖阀活塞封闭件的一部分,盖和阀活塞封闭件处于滑动密封接触处,在阀活塞封闭件的鼓侧上提供腔室,用于接收 并保持流体以迫使阀活塞关闭到打开位置。 在阀活塞关闭的另一侧,设置有用于接收用于关闭阀的流体的腔室。