摘要:
The present invention provides a paraffin mixture that is suitable for use as cosmetics and cleansing oil for skin and hair and has excellent volatility. The paraffin mixture according to the present invention is a mixture that contains isoparaffin having a carbon number of 12 to 16, and the mixture has a boiling point range of 185° C. to 215° C. and has the content of 2,2,4,6,6-pentamethylheptane at less than 10 mass %.
摘要:
The present invention generally relates to a method for producing a naphtha product from a renewable feedstock. The method includes hydrotreating the renewable feedstock to produce a hydrotreating unit heavy fraction that includes n-paraffins, and hydrocracking the hydrotreating unit heavy fraction to produce a hydrocracking unit product that includes the naphtha product. The method also includes separating the naphtha fraction and optionally recycling the hydrocracking unit heavy fraction through the hydrocracking unit. The present invention also relates to a biorenewable naphtha product suitable for use as feed stock for steam crackers and catalytic reforming units, and for use as fuel, or fuel blend stock.
摘要:
A gas hydrate storage reservoir includes at least one insulated wall defining an opening and a sunlight permeable top covering the opening. A gas-tight, gas hydrate storage cavity is defined within the top and the wall(s). A cover element is provided to cover at least a portion of the top to prevent sunlight from passing through that portion of the top. The gas storage reservoir also includes devices for removing gas and water from the storage cavity. In use, when gas is desired by the user, the cover element is removed from at least a portion of the sunlight permeable top so that sunlight will pass through the top and into the storage reservoir. Heat energy from the sun warms the exposed gas hydrates, thereby forcing the hydrates to dissociate into gas and water. The gas is removed from the tank and transported to an appropriate location for use. When sunlight is unavailable or when additional gas is needed than that produced by dissociation via the sun, an external, auxiliary heater (e.g., one or more heating coils, one or more coils or channels through which steam flows, one or more coils or channels through which a relatively warm gas or liquid flows, one or more electrical heating elements, a steam lance device, or a microwave generator) is provided to heat the hydrates. Through the use of the method and apparatus according to the invention, gas hydrates can be stored and regassified conveniently, inexpensively, and controllably, without loss of valuable gas products.
摘要:
Provided is a process for removing non-choline phosphatides from a lecithin material to facilitate obtaining a highly purified phosphatidylcholine product which is essentially free of non-choline phosphatides. The product can be obtained efficiently and effectively, even when starting with a raw soybean gum (lecithin).
摘要:
The hydroxybenzoic acids, e.g., salicylic acid and parahydroxybenzoic acid, are esterified by reacting same with a halocarbon, advantageously a halogenated derivative of an aliphatic, cycloaliphatic, cyclo- or arylaliphatic hydrocarbon, in essentially homogeneous liquid phase and in the presence of a nonquaternizable tertiary amine.
摘要:
A hydrocarbon oil composition comprising a paraffinic hydrocarbon oil and as an additive, at least one linear polymer of carbon monoxide with one or more .alpha.-olefins having at least 10 carbon atoms per molecule said polymer comprising of substantially alternating monomer units of carbon monoxide and olefins is disclosed. Optionally, the composition may also contain one or more C.sub.9+ or less olefin polymer comprising of substantially alternating monomer units of carbon monoxide and olefins. This composition has and exhibits improved pour point, cloud point, and cold filter plugging point properties. These polymer additives are novel compounds, and a process for their synthesis is also disclosed.
摘要:
The invention involves the oligomerization of olefins using a catalyst comprising a composite structure of multiple phases, at least two of which are inorganic crystalline compositions that are contiguous and have a common crystal framework and structure, and at least one of them contains phosphorus and aluminum atoms as part of its crystalline framework structure.
摘要:
A process for separating the gas components contained in liquified natural gas wherein a small amount of heavier reflux liquid (propane, butane, pentane, iso-butane and iso-pentane) is recycled to the top of a demethanizer column. This alters its chemical equilibrium causing methane to vaporize in large quantities and to separate from the liquified feed stream. A fractionator receives the heavier demethanized liquid end product from the demethanizer column and through distillation separates the lighter ethanes and propanes from the heavier reflux liquid, a portion of the latter being recycled to the demethanizer column.
摘要:
Methane is converted to higher hydrocarbons, paticularly ethylene and ethane, and most desirably ethylene, by:contacting a feed comprising methane, such as natural gas, and a free oxygen containing gas, such as oxygen or air, with a solid contact material, comprising:(a) a component comprising: at least one metal selected from the group consisting of Group IA and Group IIA metals;(b) a component comprising: at least one material selected from the group consisting of phosphate radicals and compounds containing phosphate radicals; and(c), optionally, at least one material selected from the group consisting of halogen ions and compounds containing halogen ions,under oxidative conversion conditions sufficient to convert the methane to the higher hydrocarbons.
摘要:
Process for the conversion of dimethyl ether into a mixture of substantially aliphatic hydrocarbons and water by means of a catalyst containing boron. The dimethyl ether is put in contact, at a temperature of over 250.degree. C., with a catalyst that consists of a crystalline modification of silica in whose crystal lattice a number of silicon atoms have been replaced by boron atoms.The amount of boron in the crystalline modificaton, expressed as the molar ratio of the oxides B.sub.2 O.sub.3 and SiO.sub.2, may vary between 0.0005 and 0.025.