Process for producing purified terephthalic acid
    4.
    发明授权
    Process for producing purified terephthalic acid 失效
    生产纯对苯二甲酸的方法

    公开(公告)号:US4317924A

    公开(公告)日:1982-03-02

    申请号:US143141

    申请日:1980-04-23

    申请人: Raymond M. Cahen

    发明人: Raymond M. Cahen

    IPC分类号: C07C51/487 C07C51/42

    CPC分类号: C07C51/487

    摘要: A process for purifying crude terephthalic acid is disclosed which comprises treating a solution of crude terephthalic acid in an aqueous solution of a water-soluble heavy metal salt wherein the heavy metal is cobalt, manganese, iron or nickel under elevated pressure and at elevated temperature in the presence of a supported noble metal catalyst with nitrogen gas or a gas-mixture of nitrogen and hydrogen. The treated solution is then separated from the catalyst and purified crystalline terephthalic acid is recovered by crystallization and separation from the mother liquor wherein impurities and the heavy metal salts are retained. The process is especially useful for directly treating crude terephthalic acid obtained in an oxidation process in the presence of a heavy-metal-salt-catalyst.

    摘要翻译: 公开了一种纯化粗对苯二甲酸的方法,其包括在高压和升高的温度下处理粗对苯二甲酸在水溶性重金属盐的水溶液中的溶液,其中重金属是钴,锰,铁或镍, 存在用氮气负载的贵金属催化剂或氮气和氢气的气体混合物。 然后将处理的溶液与催化剂分离,并通过结晶和从母液中分离纯化的结晶对苯二甲酸,其中保留杂质和重金属盐。 该方法特别可用于在重金属盐催化剂存在下直接处理在氧化过程中获得的粗对苯二甲酸。

    Process for producing gasoline
    5.
    发明授权
    Process for producing gasoline 失效
    汽油生产工艺

    公开(公告)号:US5171331A

    公开(公告)日:1992-12-15

    申请号:US583578

    申请日:1990-09-17

    IPC分类号: C07C2/12 C10L1/02

    摘要: A process for production of gasoline comprising oligomerizing a C.sub.2 -C.sub.6 olefin containing feedstock over an intermediate pore size siliceous crystalline molecular sieve catalyst. The catalyst may take the form of silicalite, halogen stabilized silicalite, or a zeolite. Water may be supplied to the oligomerization reaction. The product from the oligomerization reaction is then subjected to an etherification reaction in the presence of methanol over an acid cation exchange catalyst to provide a gasoline product of enhanced octane number.

    摘要翻译: 一种生产汽油的方法,其包括在中等孔径的硅质结晶分子筛催化剂上使含C2-C6烯烃的原料低聚。 催化剂可以采用硅沸石,卤素稳定的硅沸石或沸石的形式。 可以向低聚反应中供应水。 然后将低聚反应的产物在甲酸存在下通过酸性阳离子交换催化剂进行醚化反应,得到增强的辛烷值的汽油产物。

    Hydrogenation catalyst and hydrogenation process
    8.
    发明授权
    Hydrogenation catalyst and hydrogenation process 失效
    氢化催化剂和氢化工艺

    公开(公告)号:US4229361A

    公开(公告)日:1980-10-21

    申请号:US929539

    申请日:1978-07-31

    申请人: Raymond M. Cahen

    发明人: Raymond M. Cahen

    摘要: A nitrogen-containing nickel catalyst adapted for catalyzing partial and selective hydrogenation of natural oils is disclosed, which comprises nickel and such an amount of a nitrogen-containing basic compound which is equivalent to from about 5 to about 40 atoms of nitrogen per 100 atoms of nickel.The catalyst is effective in catalyzing the partial hydrogenation of natural oils in such a manner that poly-unsaturated compounds are selectively hydrogenated and the formation of saturated compounds, transisomers, and conjugated dienes is limited and liquid hydrogenation products can be obtained. The catalyst is prepared by treating a nickel catalyst with the nitrogen-containing compound at elevated temperatures optionally under hydrogen.

    摘要翻译: 公开了一种适用于催化天然油部分和选择性氢化的含氮镍催化剂,其包含镍和一定量的含氮碱性化合物,其相当于每100个原子的约5-约40个氮原子 镍。 催化剂有效地催化天然油的部分氢化,使得多不饱和化合物被选择性氢化并且饱和化合物,转异构体和共轭二烯的形成是有限的,并且可以获得液体氢化产物。 催化剂通过在含氢化合物的高温下任选地在氢气下处理镍催化剂来制备。

    Process for removing carbonyl-sulfide from liquid hydrocarbon feedstocks
    9.
    发明授权
    Process for removing carbonyl-sulfide from liquid hydrocarbon feedstocks 失效
    从液态烃原料中除去羰基硫化物的方法

    公开(公告)号:US5470456A

    公开(公告)日:1995-11-28

    申请号:US71435

    申请日:1993-06-01

    IPC分类号: C10G25/00 C10G29/16

    CPC分类号: C10G25/003

    摘要: The present invention relates to a process for removing carbonyl sulfide from a liquid hydrocarbon feedstock, said process comprising the steps of (a) passing said hydrocarbon feedstock over an absorbent material comprising nickel deposited on a support material wherein nickel is present as both nickel oxide and metallic nickel and wherein the absorbent material has been conditioned by passing an inert gas flow containing a minor amount of propylene; and (b) recovering a liquid hydrocarbon stream having substantially reduced carbonyl sulfide content.

    摘要翻译: 本发明涉及从液体烃原料中除去羰基硫的方法,所述方法包括以下步骤:(a)使所述烃原料通过沉积在载体材料上的包含镍的吸收材料上,其中镍以氧化镍和 金属镍,其中通过使含有少量丙烯的惰性气流通过吸收材料进行调理; 和(b)回收具有显着降低的羰基硫含量的液态烃流。

    Process for removing carbonyl-sulfide from liquid hydrocarbon feedstocks
    10.
    发明授权
    Process for removing carbonyl-sulfide from liquid hydrocarbon feedstocks 失效
    从液态烃原料中除去羰基硫化物的方法

    公开(公告)号:US4830735A

    公开(公告)日:1989-05-16

    申请号:US103239

    申请日:1987-09-30

    IPC分类号: C07C7/148

    CPC分类号: C07C7/148

    摘要: The present invention relates to a process for removing carbonyl sulfide from a liquid hydrocarbon feedstock, said process comprising the steps of (a) passing said hydrocarbon feedstock over an absorbent material comprising nickel deposited on a support material wherein nickel is present as both nickel oxide and metallic nickel and wherein the absorbent material has been conditioned by passing an inert gas flow containing a minor amount of propylene; and (b) recovering a liquid hydrocarbon stream having a substantially reduced carbonyl sulfide content.

    摘要翻译: 本发明涉及从液体烃原料中除去羰基硫的方法,所述方法包括以下步骤:(a)使所述烃原料通过沉积在载体材料上的包含镍的吸收材料上,其中镍以氧化镍和 金属镍,其中通过使含有少量丙烯的惰性气流通过吸收材料进行调理; 和(b)回收具有显着降低的羰基硫含量的液态烃流。