摘要:
A coal liquefaction process employing a first stage liquefaction step catalyzed by a soluble molybdenum-containing organophosphorodithioate catalyst is disclosed. In some embodiments, two consecutive liquefaction steps employ a molybdenum-containing organophosphorodithioate catalyst operating at a relatively high liquefaction temperature. In other embodiments, a second liquefaction process step operating at a relatively low temperature employs a hydrocracking catalyst to upgrade materials obtained from the first soluble catalyst liquefaction step. In some embodiments, an interstage gas separator removes gases such as carbon dioxide produced in the first liquefaction step from a partially liquefied mixture prior to further liquefying the mixture in the second liquefaction step.
摘要:
A process and catalyust are provided for hydrogenation of a hydrocarbon feedstock consisting essentially of material boiling between about 150.degree. F. and about 700.degree. F. which comprises reacting the feedstock with hydrogen at hydrogenation conditions in the presence of a catalyst comprising from about 0.1% to about 2.0% by weight each of palladium and platinum and a support comprising mordenite. The process of the present invention provides substantially improved dearomatization performance, increased desulfurization and denitrogenation, increased distillate product cetane number, increased distllate volume expansion, and utilizes a more durable catalyst.
摘要:
Silica supported high activity olefin polymerization catalysts, methods of producing the catalysts and methods of using the catalysts in the polymerization of olefins are provided. The methods of producing the catalysts each basically comprise contacting a particulate silica support impregnated with tungsten oxide with the soluble complex produced by heating a mixture of a metal dihalide with a transition metal compound to produce a solid, and then reacting the solid with an organoaluminum halide. The catalysts produced have improved productivities and are less soluble in polymerization media.
摘要:
Disclosed is a hydrocracking process employing a plurality of reaction zones wherein at least one reaction zone contains a small nominal size hydrocracking catalyst (10 to 16 U.S. Sieve mesh size) and wherein the catalyst situated upstream of the small nominal size hydrocracking has a particle size greater than the small nominal size hydrocracking catalyst.
摘要:
A composition of matter is prepared by a process comprising the steps of impregnating a alumina-containing support material with a thiosulfate (preferably ammonium thiosulfate), drying the thus impregnated material, impregnating the dried material with a transition metal compound, drying and calcining the transition metal impregnated material. This composition of matter is used as catalyst composition for hydrogenating unsaturated hydrocarbon compounds, and as catalyst composition for hydrotreating hydrocarbon-containing feed streams (in particular heavy oils) which contain metal and sulfur compounds as impurities.In another embodiment, a hydrotreating process comprises contacting hydrocarbon-containing feed stream (in particular heavy oils), which contains compounds of sulfur and metals, in the presence of a fixed catalyst bed comprising (X) at least one layer of impregnated substantially spherical alumina-containing particles, which have been prepared by a process comprising the steps of impregnating a specific starting material with (NH.sub.4).sub.2 S.sub.2 O.sub.3 and then heating the thus impregnated material at about 500.degree.-900.degree. C. for improved crush strength retention. In a preferred embodiment, the fixed catalyst bed further comprises at least one layer (Y) of catalyst particles comprising a refractory inorganic carrier and at least one hydrogenation promoter. A composition of matter comprising the impregnated, spherical alumina-containing particles described above, and a process for preparing them are also provided.
摘要翻译:通过包括以下步骤的方法制备物质组合物,所述方法包括用硫代硫酸盐(优选硫代硫酸铵)浸渍含氧化铝的载体材料,干燥如此浸渍的材料,用过渡金属化合物浸渍干燥的材料,干燥和煅烧过渡 金属浸渍材料。 该物质组合物用作用于氢化不饱和烃化合物的催化剂组合物,以及用作加氢处理含有金属和硫化合物作为杂质的含烃进料流(特别是重油)的催化剂组合物。 在另一个实施方案中,加氢处理方法包括在固定的催化剂床存在下使包含硫和金属化合物的含烃进料流(特别是重油)与含有(X)至少一层浸渍的基本上为球形的氧化铝 其通过包括以下步骤制备的方法制备,所述方法包括用(NH 4)2 S 2 O 3浸渍特定原料,然后在约500-900℃加热如此浸渍的材料,以改善压碎强度保持性。 在优选的实施方案中,固定催化剂床还包含至少一层包含耐火无机载体和至少一种氢化促进剂的催化剂颗粒层(Y)。 还提供了包含上述浸渍的含球形氧化铝颗粒的物质组合物及其制备方法。
摘要:
A hydrotreating process comprises contacting a substantially liquid hydrocarbon-containing feed stream, which contains compounds of sulfur and metals (preferably Ni and/or V), in the presence of a fixed catalyst bed comprising (a) at least one layer of impregnated substantially spherical alumina-containing particles which have been prepared by a process comprising the steps of impregnating specific starting material with at least one dissolved magnesium compound and then heating the thus impregnated material at about 500.degree.-900.degree. C. for improved crush strength retention. In a preferred embodiment, the fixed catalyst bed further comprises at least one layer (b) of catalyst particles comprising a refractory inorganic carrier and at least one hydrogenation promoter. A composition of matter comprising the impregnated, spherical alumina-containing particles described above, and a process for preparing them are also provided.
摘要:
Disclosed is a hydrocracking process wherein the feedstock is contacted in a first reaction zone with a first reaction zone catalyst comprising a nickel component and a molybdenum component deposed on a support consisting essentially of a refractory inorganic oxide. The effluent from the first reaction zone is then contacted in a second reaction zone with a second reaction zone catalyst comprising a nickel component and a tungsten component deposed on a support component consisting essentially of an alumina component and a crystalline molecular sieve component. The effluent from the second reaction zone effluent is then contacted in a third reaction zone with a third reaction zone catalyst comprising a cobalt component and a molybdenum component deposed on a support component comprising a silica-alumina component and a crystalline molecular sieve component.
摘要:
An additive comprising a metal naphthenate selected from the group consisting of cobalt naphthenate and iron naphthenate is mixed with a hydrocarbon-containing feed stream. The hydrocarbon-containing feed stream containing the additive is then contacted in a hydrofining process with a catalyst composition comprising a support selected from the group consisting of alumina, silica and silica-alumina and a promoter comprising at least one metal selected from Group VIB, Group VIIB and Group VIII of the Periodic Table. The introduction of the inventive additive may be commenced when the catalyst is new, partially deactivated or spent with a beneficial result occuring in each case.
摘要:
A composition of matter consisting essentially of alumina and at least one compound (preferably oxide) of yttrium and/or zirconium is provided and is employed as a catalyst in the hydrotreating of a substantially liquid hydrocarbon containing feed stream (particularly a heavy oil) which also contains compounds of nickel, vanadium and sulfur. The preferred preparation of the catalyst compositions of this invention comprises at least one impregnating step using a solution containing at least one aluminum compound, which is at least partially converted to aluminum oxide in a subsequent calcining step.
摘要:
An improved olefin disproportionation catalyst produced by contacting an inorganic refractory oxide containing a catalytic amount of molybdenum oxide with a promoting amount of elemental metals of the group consisting of tin and magnesium.