1905 results about "Pentane" patented technology

Method and apparatus for providing real-time data indicative of the isotopic composition of formation fluids during drilling. The method includes the steps of: (a) providing a reference fluid having a known isotopic composition in a reference cell; (b) capturing a sample of formation; (c) providing at least one laser beam; (e) passing a beam through the reference fluid, measuring the reference-measurement beam before and after it passes through the reference fluid; (f) and passing a beam through the sample, measuring the beam before and after it passes through the sample, and calculating a first isotope concentration from those measurements. The measurements can provide information relating to the carbon isotopic composition of individual compounds in hydrocarbon gas mixtures, with the individual compounds including methane, ethane, propane, iso- or normal butane, or iso- or normal pentane.

An integrated refining process for the production of high quality gasoline blending components from low value components is disclosed. In addition there is disclosed a method of improving the operating efficiency of a refinery by reducing fuel gas production and simultaneously producing high quality gasoline blending components of low volatility. The processes involve the alkylation of a refinery stream containing pentane with ethylene using an ionic liquid catalyst.

A method for providing an anhydrous route for the synthesis of amine capped coinage-metal (copper, silver, and gold) nanoparticles (NPs) using the coinage-metal mesityl (mesityl=C₆H₂(CH₃)₃-2,4,6) derivatives. In this method, a solution of (Cu(C₆H₂(CH₃)₃)₅, (Ag(C₆H₂(CH₃)₃)₄, or (Au(C₆H₂(CH₃)₃)₅ is dissolved in a coordinating solvent, such as a primary, secondary, or tertiary amine; primary, secondary, or tertiary phosphine, or alkyl thiol, to produce a mesityl precursor solution. This solution is subsequently injected into an organic solvent that is heated to a temperature greater than approximately 100° C. After washing with an organic solvent, such as an alcohol (including methanol, ethanol, propanol, and higher molecular-weight alcohols), oxide free coinage NP are prepared that could be extracted with a solvent, such as an aromatic solvent (including, for example, toluene, benzene, and pyridine) or an alkane (including, for example, pentane, hexane, and heptane). Characterization by UV-Vis spectroscopy and transmission electron microscopy showed that the NPs were approximately 9.2±2.3 nm in size for Cu°, (no surface oxide present), approximately 8.5±1.1 nm Ag° spheres, and approximately 8–80 nm for Au°.

According to a process for production of alkylene oxide polymers offered by the present invention, an alkylene oxide is subjected to a polymerization reaction under presence of a catalyst in a solvent containing an aliphatic hydrocarbon having from five to seven carbon atoms and a branched structure. The aliphatic hydrocarbon is provided preferably by 2-methyl pentane, 3-methyl pentane, 2,3-dimethyl pentane, 2,4-dimethyl pentane, etc. The alkylene oxide is provided preferably by ethylene oxides and/or propylene oxides.

The invention discloses a catalyst for manufacturing olefin by low-carbon alkane dehydrogenation and application thereof, belonging to the technical field of preparation of basic organic chemical materials. The catalyst takes silicoaluminophosphate molecular sieve and alumina mixture as carriers, VIII group or IVA group elements as active components and alkaline-earth metal or rare-earth elements as auxiliary agents for the process of olefin preparation by ethane, propane, butane or pentane dehydrogenation. In the process of olefin preparation by low-carbon alkane dehydrogenation, catalyst is firstly reduced by hydrogen and then reacts, and finally the catalyst is in charcoaling regeneration and chlorination update; and reaction regeneration process flow has big choice, the reactor can adopt a fixed bed, a moving bed, a fluidized bed or a double-particle fluidized bed, and catalyst regeneration can be carried out in a device or out of the device. Compared with the existing catalyst for manufacturing olefin by low-carbon alkane dehydrogenation, the catalyst provided by the invention ensures that low-carbon alkane selectivity is above 95% in the olefin preparing process by low-carbon alkane dehydrogenation under high conversion rate.

The invention discloses a method for refining catalysis drying gas by using oil absorption extraction. The method comprises the steps of using the carbon five-hydrocarbon containing pentane as absorbent, absorbing the C2 distillate and more important components in the compressed and cooled catalysis drying gas in a main absorbing tower, sending the matter in the main absorbing tower to a desorbing tower, and recycling the C2 concentrated gas from the top of the desorbing tower. The method of the invention has high absorbing temperature and needs no ethylene, propylene cooling compressor and de-compressor so the energy consumption is less, the investment is low and the operation is simple.

Azeotropic or azeotrope-like compositions are disclosed. The azeotropic or azeotrope-like compositions are mixtures of E-1,1,1,4,4,4-hexafluoro-2-butene with methyl formate, n-pentane, 2-methylbutane trans-1,2-dichloroethylene, 1,1,1,3,3-pentafluoropropane, n-butane or isobutane. Also disclosed is a process of preparing a thermoplastic or thermoset foam by using such azeotropic or azeotrope-like compositions as blowing agents. Also disclosed is a process of producing refrigeration by using such azeotropic or azeotrope-like compositions. Also disclosed is a process of using such azeotropic or azeotrope-like compositions as solvents. Also disclosed is a process of producing an aerosol product by using such azeotropic or azeotrope-like compositions. Also disclosed is a process of using such azeotropic or azeotrope-like compositions as heat transfer media. Also disclosed is a process of extinguishing or suppressing a fire by using such azeotropic or azeotrope-like compositions. Also disclosed is a process of using such azeotropic or azeotrope-like compositions as dielectrics.

Method and system of purging evaporative emission control canister using heated purge air comprises a scrubber containing an activated carbon fiber material or carbon monolith selected to adsorb butane and/or pentane isomer vapors in low concentrations in air passing through the scrubber and to desorb the adsorbed butane and/or pentane isomers when purged with exhaust heated purge air. A method for reducing bleed emission to almost zero mg per day uses exhaust heated air purging of the scrubber.

A composition useful as a blowing agent having no flash point or reduced combustibility comprising 2-chloropropane and a gas selected from the group consisting of a fluorohydrocarbon, perfluorocarbons, fluoroethers, hydrofluoropolyethers and mixtures thereof is disclosed. A polyisocyanurate foam or a polyurethane modified polyisocyanurate foam having a mainly closed cell structure and also a method for preparing this foam, the latter comprising closed cells wherein a foam blowing agent consisting of a mixture of 2-chloropropane and one or more HFC compounds including pentafluoropropane, pentafluorobutane, heptafluoropropane, hexafluoropropane or pentafluoroethane are disclosed. Pentanes can be added if desired. Azeotropic mixtures in which 2-chloropropane is an ingredient are disclosed.

The invention provides an expandable polypropylene bead and a preparation method of the expandable polypropylene beads, and also provides foaming beads and foaming molding products of the expandable polypropylene beads, which relates to the resin expandable beads technical field. Random copolymerized polypropylene is used as basic resin, so that melting intensity can reach to an ideal range when in foaming with high melting intensity polypropylene and low density polyethylene resin being added. Expandable beads are prepared in a closed reactor without external pressure with pentane being used as foaming agent. The expandable beads contain 1 to 15 parts by weight of the high melting intensity polypropylene, 1 to 10 parts by weight of the low density polyethylene, 1.0 to 3.8 parts by weight of the foaming agent and 0.1 to 10 parts by weight of nucleating agent on the basis of 100 parts by weight of the random copolymerized polypropylene. The expandable polypropylene beads are easy to foam, whose foaming rate can reach to 16 times with uniform cells and whose foam volume weight is about 0.05 to 0.12g/cm3. The invention adopts a low-pressure method to produce the polypropylene foaming products in different shapes according to the requirement with low equipment requirement and low cost.

An azeotrope-like mixture consisting essentially of chlorotrifluoropropene and at least one component selected from the group consisting of pentane, hexane, methanol, and trans-1,2-dichloroethene.

A method for producing a product comprising at least one selected from C₂₊ hydrocarbons, oxygenates, and combinations thereof from light gas comprising one or more of carbon dioxide, methane, ethane, propane, butane, pentane, and methanol by forming a dispersion of light gas in a liquid feed, wherein the dispersion is formed at least in part with high shear forces and wherein at least one of the liquid feed and the light gas is a hydrogen source. A system for carrying out the method is also presented.

Azeotropic or azeotrope-like compositions are disclosed. The azeotropic or azeotrope-like compositions are mixtures of E-1,1,1,4,4,5,5,5-Octafluoro-2-pentene with methyl formate, n-pentane, 2-methylbutane, 1,1,1,3,3-pentafluorobutane, trans-1,2-dichloroethylene, 1,1,1,3,3-pentafluoropropane, dimethoxymethane, cyclopentane or Z-1,1,1,4,4,4-hexafluoro-2-butene. Also disclosed is a process of preparing a thermoplastic or thermoset foam by using such azeotropic or azeotrope-like compositions as blowing agents. Also disclosed is a process of producing refrigeration by using such azeotropic or azeotrope-like compositions. Also disclosed is a process of using such azeotropic or azeotrope-like compositions as solvents. Also disclosed is a process of producing an aerosol product by using such azeotropic or azeotrope-like compositions as propellants. Also disclosed is a process of using such azeotropic or azeotrope-like compositions as heat transfer media. Also disclosed is a process of extinguishing or suppressing a fire by using such azeotropic or azeotrope-like compositions. Also disclosed is a process of using such azeotropic or azeotrope-like compositions as dielectrics. Also disclosed is a process for the separation of a chemical compound from a mixture of two or more chemical compounds using such azeotropic or azeotrope-like compositions.

This invention discloses a regeneration mehod for waste lubricant including: settlementing waste lubricant naturally to remove water and mechanical impurities in it, when the content of mechanical impurities is lower than 0.08wt% or pentane undissolved substance is less than 0.30wt%, it is often decompressed and distilled directly, otherwise, a thinner 0-3.5 times of the total weight of the waste lubricant is added to be separated under 30-95deg.C then decompression and distillation are done to it later, then short time distillation and refining to the lubricant is carried out to get regenerated lubricant.

Azeotropic or azeotrope-like compositions are disclosed. The azeotropic or azeotrope-like compositions are mixtures of Z-1,1,1,4,4,4-hexafluoro-2-butene with methyl formate, pentane, 2-methylbutane, 1,1,1,3,3-pentafluorobutane, trans-1,2-dichloroethylene, 1,1,1,3,3-pentafluoropropane, dimethoxymethane, or cyclopentane. Also disclosed is a process of preparing a thermoplastic or thermoset foam by using such azeotropic or azeotrope-like compositions as blowing agents. Also disclosed is a process of producing refrigeration by using such azeotropic or azeotrope-like compositions. Also disclosed is a process of using such azeotropic or azeotrope-like compositions as solvents. Also disclosed is a process of producing an aerosol product by using such azeotropic or azeotrope-like compositions. Also disclosed is a process of using such azeotropic or azeotrope-like compositions as heat transfer media. Also disclosed is a process of extinguishing or suppressing a fire by using such azeotropic or azeotrope-like compositions. Also disclosed is a process of using such azeotropic or azeotrope-like compositions as dielectrics.

A method and system of refining natural gas that improves the quality of liquefied natural gas and enables separation and recovery of hydrocarbons other than methane. The method of refining natural gas containing methane; any other hydrocarbon selected from the group consisting of ethane, ethylene, propane, propylene, n-butane, isobutane, 1-butene, n-pentane, and isopentane; carbon dioxide; and hydrogen sulfide, includes adjusting a pressure and temperature of the natural gas so that the methane is in the gas phase, the other hydrocarbon in the liquid phase, and the carbon dioxide and the hydrogen sulfide in the solid phase, respectively; separating the natural gas, of which the pressure and temperature has been adjusted, into a gas containing the methane and a suspension liquid; and separating the separated suspension liquid into a liquid containing the other hydrocarbon and a solid containing the carbon dioxide and the hydrogen sulfide.