Abstract:
A submerged control umbilical pull-in arrangement (10) (Fig. 1) comprises a control hub assembly (22) attached to an umbilical (23) lowered laterally of a subsea structure bed (11) and a hauling gantry (30), separately lowered to the bed on conventional guide wires (15), including a pair of dependent hauling cables (41, 42) which pass about, and terminate at, cable guide pulleys (40, 41) on support legs (34, 35) spaced apart at opposite edges of a platform (25) which is adjacent the positions occupied by a laterally facing hub (18) of a valve tree (16) lowered to the support bed. A remotely controlled vehicle (56) draws the cables (41, 42) from the gantry (36) and couples them to the hub assembly (22) which is then hauled by the cables onto the platform and secured. The vehicle uncouples the hauling cables permitting the gantry to be removed. The umbilical hub assembly carries a hub plate (21) movable relatively to the platform to and from mating engagement with a cooperating plate (20) on the valve tree to permit tree replacement with the hub assembly on the platform and the cooperating hub plates are slidable transversely to each other and direction of approach and cooperate with guide surfaces (68, 69 Fig. 7) to align as they are moved together.
Abstract:
In a process for liquefying a natural gas an organic conditioner, e.g., a gaseous hydrocarbon, which is gaseous at ambient conditions is added to the natural gas to shift the bubble point of the natural gas to a selected storage temperature and pressure at which the gas will be in the liquid phase.
Abstract:
A lubricant mixture having enhanced viscosity index comprising: a) a low viscosity C20-C60 lubricant range liquid comprising substantially linear hydrocarbons prepared by shape selective catalysis of a lower olefin with a medium pore acid zeolite catalyst to provide substantially linear liquid olefinic intermediates or C20 hydrogenated lubricants, the lubricant range liquid having a kinematic viscosity of 2-10mm /s at 100 DEG C; and b) at least one poly(alpha-olefin) having a viscosity of greater than 20mm /s and viscosity index improvement properties.
Abstract:
Novel lubricant compositions comprising polyalpha-olefins are disclosed having high viscosity indices with low pour point. The compositions are characterized by a uniform molecular structure with low branch ratios. The invention describes a liquid lubricant composition comprising C30-C1300 hydrocarbons, said composition having a branch ratio of less than 0.19, weight average molecular weight between 300 and 45,000, number average molecular weight between 300 and 18,000, molecular weight distribution between 1 and 5 and pour point below -15 DEG C. 1-decene trimer comprising 9-methyl, 11-octylheneicosane and 11-octyldocosane is disclosed. The lubricant compositions are produced by contacting said alpha olefin with a supported solid reduced Group VIB (e.g., chromium) catalyst under oligomerization conditions at a temperature of about 90 to 250 DEG C to produce liquid lubricant hydrocarbon. The hydrogenated lubricant range hydrocarbon product has viscosity index of about 130 to 280 and a viscosity up to about 750 mm /s(cs). The process is particularly useful where the starting alpha olefin consists essentially of olefinic hydrocarbon having 8 to 14 carbon atoms or mixtures thereof; wherein the process conditions include reaction temperature of about 100 to 180 DEG C; and wherein the support catalyst includes porous inert silica.
Abstract:
An integrated process for the production of ether-rich liquid fuels containing MTBE and TAME (25) by etherifying (21) a hydrocarbon feedstock containing C4+ isoalkenes (20) in the presence of a stoichiometric excess of lower alkyl alcohol. Unreacted alcohol and olefins are passed to a zeolite catalysed conversion reactor (27) to produce gasoline (33) and light hydrocarbons (32). The light hydrocarbon fraction, comprising C4-C5 paraffins (32), is dehydrogenated (34) and C4-C5 olefins are recycled to the etherification reactor.
Abstract:
An improved process for reacting crude aqueous methanol feedstock with tertiary-olefinic hydrocarbons to produce C5+ methyl tertiary-alkyl ethers, which comprises: contacting the aqueous methanol feedstock with a liquid hydrocarbon extractant rich in C4+ isoalkene under liquid extraction conditions; recovering an organic extract phase comprising the hydrocarbon extractant and a major amount of methanol introduced in the feedstock; reacting the extracted methanol and C4+ isoalkene in contact with an acid etherification catalyst under catalytic reaction conditions to produce ether product; separating ether product from unreacted methanol and olefin; recovering an aqueous methanol raffinate phase containing the major amount of water introduced with the feedstock and a minor amount of feedstock methanol; and converting methanol from the aqueous raffinate phase concurrently with unreacted methanol and olefin from etherification effluent separation to produce hydrocarbons.
Abstract:
A method for synthesizing a large pore crystalline molecular sieve having an X-ray diffraction pattern with the characteristic lines (IA) comprises (i) preparing a mixture comprising sources of oxides of aluminum, phosphorus, and optionally one or more elements (M) other than aluminum or phosphorus, water and a directing agent (DA), and having a composition, in terms of mole ratios, within the following ranges: M/Al2O3 0 to 0.5; P2O5/Al2O3 0.5 to 1.25; H2O/Al2O3 10 to 100; DA/Al2O3 0.5 to 1.5; wherein DA is a compound of formula (I), wherein R, R', R'' and R''' are the same or different and are selected from -CH2X, -CH2CH2X, and X is a cation, (ii) maintaining said mixture under conditions including a temperature of 100 DEG C to 145 DEG C for a period of time of up to 80 hours and (iii) recovering the crystalline product from step (ii).
Abstract translation:用于合成具有X射线衍射图谱的特征线(IA)的大孔结晶分子筛的方法包括(i)制备包含铝,磷和任选的一种或多种元素(M)的氧化物源的混合物 比例为铝或磷,水和导向剂(DA),其组成按摩尔比计在以下范围内:M / Al 2 O 3 0至0.5; P2O5 / Al2O3 0.5〜1.25; H2O / Al2O3 10〜100; DA / Al2O3 0.5〜1.5; 其中DA是式(I)的化合物,其中R,R',R“和R”'相同或不同,并且选自-CH 2 X,-CH 2 CH 2 X,X是阳离子,(ii)维持 所述混合物在100℃至145℃的温度条件下进行长达80小时的时间,和(iii)回收步骤(ii)的结晶产物。
Abstract:
A method for synthesizing a large pore crystalline molecular sieve having an X-ray diffraction pattern with lines shown in Table 1A of the specification comprises (i) preparing a mixture comprising sources of oxides of aluminum, phosphorus, and optionally one or more elements (M) other than aluminum or phosphorus, water and a directing agent (DA), and having a composition, in terms of mole ratios, within the following ranges: M/Al2O3 0 to 0.5; P2O5/Al2O3 0.5 to 1.25; H2O/Al2O3 10 to 100; DA/Al2O3 0.5 to 1.5, wherein DA is a compound of formula (I), wherein R is selected from -H, -CH2X, -CH2CH2X and combinations thereof, R' is selected from -CH3X, -CH2CH2X and combinations thereof, and X is hydroxide, halide, amino or a combination thereof, (ii) maintaining said mixture under conditions including a temperature of 100 DEG C to 160 DEG C for a period of time of up to 80 hours and (iii) recovering the crystalline product from step (ii).
Abstract translation:用于合成具有本说明书表1A所示的线的具有X射线衍射图的大孔结晶分子筛的方法包括(i)制备包含铝,磷和任选的一种或多种元素(M ),水和导向剂(DA),并且具有摩尔比的组成在以下范围内:M / Al 2 O 3 0至0.5; P2O5 / Al2O3 0.5〜1.25; H2O / Al2O3 10〜100; DA / Al 2 O 3 0.5〜1.5,其中DA是式(I)的化合物,其中R选自-H,-CH 2 X,-CH 2 CH 2 X及其组合,R'选自-CH 3 X,-CH 2 CH 2 X及其组合,和 X是氢氧化物,卤化物,氨基或它们的组合,(ii)将所述混合物在包括100℃至160℃的温度的条件下保持达80小时以上的时间,和(iii)从 步骤(ii)。
Abstract:
A process for the production of gasoline from a C4-fuel gas containing ethene and propene and catalytic reformate containing C6 to C8 aromatic hydrocarbons. The C4-fuel gas stream (28) is obtained by catalytic cracking of the heavy distillate fraction (7) obtained by distillation of a crude feed (1) in a distillation apparatus (2). The reformate C6 to C8 aromatic hydrocarbons in stream (15) is obtained by hydrotreating naphtha (5) in zone (9), followed by reforming in zone (13). The C4-fuel gas (28) and C6-C8 aromatic reformate (15) are mixed and contacted in a catalytic reactor (29) with a zeolite catalyst to convert ethene and propene in the fuel gas to C5+ aliphatic and aromatic hydrocarbon gasoline and to convert C6 to C8 aromatics in the reformate into C8 to C11 hydrocarbon gasoline. In a preferred embodiment, the process comprises maintaining a fluidized bed of zeolite catalyst particles in a turbulent reactor at a temperature of 316 to 399 DEG C (600 to 750 DEG F) and pressure of 790 to 825 kPa (100 to 250 psia).
Abstract:
Catalytic reforming of a naphtha feed to provide high octane aromatic components employs a low acidity refractory oxide-bound intermediate and/or large pore zeolite prepared with at least an extrusion-facilitating amount of low acidity refractory oxide in colloidal form and containing at least one metal species selected from the platinum group metals.