Decomposition of organohalogen compounds in dust-laden-waste gases
    2.
    发明授权
    Decomposition of organohalogen compounds in dust-laden-waste gases 失效
    有机卤素化合物在含尘废气中的分解

    公开(公告)号:US5645806A

    公开(公告)日:1997-07-08

    申请号:US274694

    申请日:1994-07-14

    IPC分类号: B01D53/86 C01B7/00

    CPC分类号: B01D53/8662

    摘要: A process for decomposing organohalogen compounds which are present in dust-laden gases which have a carbon content of less than 0.6% by weight, by oxidative breakdown with the aid of solid catalysts suitable for this purpose, whereina) the dust is deposited from the gases at 250.degree.-500.degree. C., and the dust-free gas is passed together with oxygen or an oxygen-containing gas over the catalyst, orb) the deposition of the dust takes place at below 250.degree. C., the organohalogen compounds are desorbed from the dust in an oxygen-containing gas stream at 250.degree.-500.degree. C., and the gas stream is passed over the catalyst, orc) the dust-laden gas is passed in the presence of oxygen over the catalyst at 250.degree.-500.degree. C., and the dust is subsequently removed.

    摘要翻译: 通过借助于适合于此目的的固体催化剂的氧化分解,分解存在于含碳量低于0.6重量%的含尘气体中的有机卤素化合物的方法,其中a)从 气体在250°-500℃,无尘气体与氧气或含氧气体一起通过催化剂,或b)灰尘的沉积发生在250℃以下,有机卤素 化合物在250-500℃的含氧气流中从灰尘中解吸,气流通过催化剂,或c)含尘气体在氧气存在下通过催化剂 在250°-500℃下,随后除去灰尘。

    Preparation of oxidation-stable and low-temperature-stable base oils and
middle distillates
    4.
    发明授权
    Preparation of oxidation-stable and low-temperature-stable base oils and middle distillates 失效
    氧化稳定和低温稳定的基础油和中间馏分的制备

    公开(公告)号:US5143595A

    公开(公告)日:1992-09-01

    申请号:US654883

    申请日:1991-02-01

    CPC分类号: C10G65/12

    摘要: A process for the preparation of a base oil and middle distillate which is stable to oxidation and low temperature from a mineral oil fraction having a boiling range above 350.degree. C., by, in a first step, converting the mineral oil fraction on a hydrocracking catalyst under hydrocracking conditions to an extent of from 20 to 80% by weight into fractions which boil below 360.degree. C., separating the reactor effluent, if necessary, into liquid and gas phases in a high-pressure separator, treating the entire reactor effluent or only the liquid phase, directly or after removal of the fractions boiling below 360.degree. C. by distillation, in a second step with hydrogen at from 200.degree. to 450.degree. C. and at from 20 to 150 bar in the presence of a catalyst which contains a crystalline pentasil-type borosilicate zeolite, alumina and/or amorphous alumosilicate as the carrier material and one or more metals from Group VIb and/or Group VIII of the Periodic Table and phosphorus, and, after distillation of the hydrogenation product, obtaining a middle distillate in the boiling range from 180.degree. to 360.degree. C. having a pour point of below -30.degree. C. and an oxidation-stable residue having a boiling point >360.degree. C., a viscosity index of from 110 to 135 and a pour point of below -12.degree. C.

    摘要翻译: 一种制备基础油和中间馏分的方法,该方法由沸点范围高于350℃的矿物油馏分对氧化和低温稳定,在第一步中,将矿物油馏分转化为加氢裂化 催化剂在加氢裂化条件下的范围为20至80重量%,沸点低于360℃,如果需要,将反应器流出物分离成高压分离器中的液相和气相,处理整个反应器流出物 或直接或通过蒸馏除去沸点低于360℃的馏分,在第二步中,在200至450℃的氢气和20至150巴的催化剂存在下,仅进行液相 其包含结晶pentasil型硼硅酸盐沸石,氧化铝和/或无定形铝硅酸盐作为载体材料和来自元素周期表VIb和/或VIII族的一种或多种金属和磷,并且在蒸馏之后 的氢化产物,得到沸点低于-30℃的沸点范围为180至360℃的中间馏分和沸点> 360℃的氧化稳定残余物,粘度 指数为110至135,倾点低于-12℃