17 results about "Isohexanes" patented technology

Exemplary embodiments of the present technological advancement include pyridine-2,6-bis(phenylenephenolate) complexes that are useful as catalyst components for olefin polymerization and have enhanced solubility in non-aromatic hydrocarbons (e.g., isohexane). The improved solubility of these complexes was accomplished by the modification of the leaving group which generally leads to improved solubility, without adversely affecting the performance of the complex when used as a catalyst for olefin polymerizations.

Exemplary embodiments of the industrial progress of the present invention include pyridine-2,6-bis(phenylene phenolate) complexes that are useful as catalyst components for olefin polymerization and have improved solubility in non-aromatic hydrocarbons (e.g., isohexane). The improvement in the solubility of these complexes was achieved by modifying the ligand framework that provides improved solubility at specific positions, but did not adversely affect the performance of this complex when used as a catalyst for olefin polymerization.

The utility model discloses a hydrofining device for producing isohexane, and relates to the technical field of chemical equipment. The recycle hydrogen utilization unit comprises a recycle hydrogen desulfurization reaction tank, a compressor connected with an inlet of the recycle hydrogen desulfurization reaction tank, a compressor inlet connected with a hydrogen outlet of the recycle hydrogen liquid separation tank through a pipeline, a hydrogen supplementing pipeline connected with an inlet of the compressor, and a filter connected between an outlet of the recycle hydrogen desulfurization reaction tank and a hydrogen adding port of the hydrogenation reactor; a feeding hole is formed in the top of the hydrogenation reactor. The hydrogen cooler has the advantages that hydrogen flows upwards along the spiral groove, cooling liquid enters the cooling cavity from the lower portion, after heat exchange is completed, the cooling liquid flows out of the top of the cooling cavity, the heat exchange effect is better, and liquid in the hydrogen flows to the lower portion along with the spiral groove; liquid in hydrogen is intercepted by the inner filter screen, and flows along the conical tip of the inner filter screen after being gathered, so that the gas-liquid separation effect is better.

The invention provides outdoor anti-aging grafted nail-free glue as well as a preparation method and application thereof, and the outdoor anti-aging grafted nail-free glue is prepared from 10 to 15 parts of linear butylbenzene thermoplastic elastomer, 3 to 6 parts of methyl methacrylate, 0.5 to 1 part of methacrylic acid, 15 to 25 parts of butanone, 8 to 12 parts of acetic ether, 0.3 to 1 part of toluene liquid of benzoyl peroxide, 1 to 2 parts of antioxidant, 16 to 30 parts of hydrogenated petroleum resin and 10 to 15 parts of isohexane. 25-40 parts of nano calcium carbonate and 10-15 parts of heavy calcium carbonate. By adopting a graft polymerization process of SBS, methacrylic acid and methyl methacrylate, the stability is improved, and a large steric hindrance group is introduced near a double bond through a grafting reaction for physical shielding; meanwhile, transparent hydrogenated petroleum resin and hydrogenated saturated double bonds are added, so that the thermal oxidation resistance and the ultraviolet resistance of the SBS nail-free glue are remarkably improved, the long-term viscosity is kept, and the aging resistance of the SBS nail-free glue is also improved.

Exemplary embodiments of the present technological advancement include pyridine-2,6-bis(phenylenephenolate) complexes that are useful as catalyst components for olefin polymerization and have improved solubility in non-aromatic hydrocarbons (e.g. isohexane). The improved solubility of these complexes was accomplished by the modification of the ligand framework at a specific position that led to improved solubility, but did not adversely affect the performance of the complex when used as a catalyst for olefin polymerizations.

The application provides a device and method for separating a mixture of chloromethane and isobutane, comprising an extractive rectification tower, a chloromethane and isobutane mixture feeding port, an extractant feeding port and a chloromethane gas phase outlet arranged on the extractive rectification tower; the extractant fed by the extractant feeding port comprises n-hexane and / or isohexane; a cooler connected with the bottom of the extractive rectification tower; an extractant recovery tower connected with the cooler; an isobutane recovery unit connected with the top of the extractant recovery tower; an extractant recovery tower tank reboiler connected with the bottom of the extractant recovery tower, and an extractant buffer tank connected by a pipeline. The application can separate chloromethane and isobutane and obtain high-purity chloromethane and isobutane by using the above device and a specific kind of extractant; in addition, the device uses energy coupling technology and has low energy consumption.

Exemplary embodiments of the present technical progress include pyridine-2, 6-bis (phenylene phenolate) complexes that can be used as catalyst components for olefin polymerization and have improved solubility in non-aromatic hydrocarbons, such as isohexane. Improved solubility of these complexes is achieved by modifying the ligand backbone at specific positions, which results in improved solubility, but does not adversely affect the performance of the complexes when used as catalysts for olefin polymerization.

The present invention discloses an oil-based drill cuttings environmental protection treatment agent, a preparation method and application thereof, and belongs to the field of environmental protection treatment of petroleum drilling. The oil-based drill cuttings environmental protection treatment agent of the present invention comprises: 10 to 40 parts of n-hexane, 10 to 40 parts of cyclohexane, 10 to 40 parts of isohexane, 0 to 20 parts of polydimethylsiloxane, and 5 parts of N-methylpyrrolidone. The preparation method of the present invention comprises: preparing each raw material by volume, mixing them evenly, and obtaining the product. The method for desorbing organic pollutants from oil-containing drill cuttings by the oil-based drill cuttings environmental protection treatment agent of the present invention comprises: taking oil-based drill cuttings, adding the oil-based drill cuttings environmental protection treatment agent, leaching under stirring conditions, and then solid-liquid separation, drying the solid phase, and obtaining drill cuttings desorbed of organic pollutants. The oil-based drill cuttings environmental protection treatment agent of the present invention can be used for diesel-based drill cuttings and white oil-based oil-containing drill cuttings, has good safety, can effectively attach various organic pollutants on oil-containing drill cuttings, and has a high recovery rate.

The invention discloses a method for separating n-alkanes from a petroleum geological sample. The method comprises the following steps: separating a saturated hydrocarbon component in a petroleum geological sample by adopting isohexane, adsorbing n-alkanes in the saturated hydrocarbon component through a molecular sieve, and desorbing the n-alkanes adsorbed by the molecular sieve by utilizing dichloromethane. By adopting the method for separating the n-alkanes, the loss of low-carbon-number and low-boiling-point compounds caused in the concentration process of the sample can be effectively avoided, and the n-alkanes, isoalkanes and cycloalkanes in the sample can be obtained more safely, efficiently and completely; meanwhile, additional organic solvent extraction operation and accompanying sample loss after the molecular sieve is dissolved by hydrofluoric acid are avoided.

Exemplary embodiments of the present technical progress include pyridine-2, 6-bis (phenylene phenolate) complexes that can be used as catalyst components for olefin polymerization and have enhanced solubility in non-aromatic hydrocarbons (e.g., isohexane). The improved solubility of these complexes is achieved by modification of leaving groups, which typically results in improved solubility, without adversely affecting the performance of the complexes when used as catalysts for olefin polymerization.

The utility model relates to a fractionation device for extracting n-hexane from industrial hexane, which comprises a light component removal tower, an isohexane oil removal tower and an n-hexane oil removal tower which are connected in series, and a first lift pump, a second lift pump and a third lift pump are respectively arranged on bottom discharge pipelines of the light component removal tower, the isohexane oil removal tower and the n-hexane oil removal tower; the top of the light component removal tower, the top of the isohexane oil removal tower and the top of the n-hexane oil removal tower are connected with a first cooling reflux unit, a second cooling reflux unit and a third cooling reflux unit respectively, and the technical key points are as follows: a first bypass pipeline is arranged between an outlet pipeline of the first lifting pump and an outlet pipeline of the second lifting pump, and a first heater is arranged on the first bypass pipeline; a second bypass pipeline is arranged between the outlet pipeline of the third lifting pump and the feeding pipeline of the light component removal tower; and a second heater is arranged on the second bypass pipeline. According to the device, the condition that raw materials entering the light component removal tower cannot continue to be subjected to fractionation operation when the isohexane oil removal tower breaks down is avoided, and the production efficiency is improved.

The application discloses a C5-C6 hydrocarbon conversion method. The method comprises the following steps: (1) C5-C6 hydrocarbon is separated by normal and iso separation, and the separated normal pentane and normal hexane are directly used as ethylene raw materials; (2) the separated iso-pentane and iso-hexane in step (1) are mixed with hydrogen and pass through a hydroconversion reaction zone, the hydroconversion reaction zone is filled with at least two hydroconversion catalyst beds, the active metal content of the hydroconversion catalysts decreases in turn along the flow direction, and the active metal content of the hydroconversion catalysts filled in the adjacent two catalyst beds differs by 1-25 percentage points in terms of oxides; and (3) the reaction effluent of step (2) enters a separation system, and the hydrogen-rich gas and the hydroconversion product are separated, the C2-C4 hydrocarbon in the hydroconversion product is directly used as ethylene raw materials, and the C5-C6 hydrocarbon is recycled to step (1) for continuous reaction. By adopting the method, the quality of the ethylene raw materials can be maximized, and the ethylene yield and the total triene yield of the ethylene device can be significantly improved.

Exemplary embodiments of the present technical progress include pyridine-2, 6-bis (phenylene phenolate) complexes that can be used as catalyst components for olefin polymerization and have improved solubility in non-aromatic hydrocarbons (e.g., isohexane). Improved solubility of these complexes is achieved by modifying the ligand backbone at specific positions, which results in improved solubility, but does not adversely affect the performance of the complexes when used as catalysts for olefin polymerization.

The invention provides a preparation method of hexane, and relates to the technical field of petroleum industry. The preparation method provided by the invention comprises the following steps: rectifying and separating aromatic raffinate oil to obtain a C6 mixture; hydrotreating the C6 mixture through a hydrogenation reactor, and isomerizing to obtain a hexane mixture; separating the hexane mixture to obtain isohexane, normal hexane and cyclohexane; wherein the hydrogenation reactor is filled with a hydrogenation catalyst, the hydrogenation catalyst comprises a carrier and nickel-molybdenum active particles loaded on the carrier, and the loading weight of the nickel-molybdenum active particles in the hydrogenation catalyst is 5%-10%. According to the method, the utilization rate of the aromatic raffinate oil can be increased, the yield and types of hexane compounds (n-hexane, cyclohexane and isohexane) can be increased, and the added value of the aromatic raffinate oil can be effectively increased.

The invention relates to the technical field of normalizing, in particular to a C6 alkane normalizing method and system. The C6 alkane normalizing method comprises the following steps: A) carrying out low-temperature dechlorination treatment on isohexane after dehydration treatment; b) preheating the material obtained in the step A) by a second heat exchanger, preheating by a first heat exchanger, preheating by a reaction preheater, and carrying out a normalizing reaction in a normalizing reactor; c) cooling a product after the normalizing reaction through a second heat exchanger, and then carrying out gas-liquid separation; and D) feeding the liquid-phase material subjected to gas-liquid separation into a stabilizing tower to remove light components of C5 and below, feeding the material at the bottom of the stabilizing tower into an n-hexane tower to separate isohexane, and obtaining an n-hexane product at the bottom of the tower. The method provided by the invention can effectively convert isohexane into normal hexane.

The invention relates to the technical field of petrochemical engineering separation, in particular to a separation method of n-hexane. After the light component C5 oil and the isohexane are separated from the hydrogenation saturated aromatic hydrocarbon and the olefin reforming raffinate oil from which the aromatic hydrocarbon and the olefin are removed, the dimethylformamide and the N-methyl pyrrolidone in a specific mass ratio are used as solvents, and the obtained material is sequentially subjected to normal hexane stripping and normal hexane rectification, so that normal hexane rectification can be carried out at a relatively low solvent-oil ratio, and the yield of the product is improved. Meanwhile, the mass content of methylcyclopentane in the n-hexane obtained through separation is 10%-15%. Separation of the n-hexane is better realized by controlling separation process parameters of the n-hexane, n-hexane rectification under a relatively low solvent-oil ratio is promoted to obtain the n-hexane with proper methylcyclopentane mass content, and the energy consumption cost of the device is greatly reduced.

Provided is a cleaning composition contained in an aerosol spray can, methods of making and using the cleaning composition, which comprises: a liquid cleaning mixture, comprising: a) a solvent selected from the group consisting of isohexane, isoheptane, and n-heptane and mixtures thereof; b) a de-aromatized hydrocarbon solvent having 7 to 8 carbon atoms in its molecule; c) a branched aliphatic alkane having 10 to 11 carbon atoms; d) from 5 to 15 parts by weight of ethanol, e) from 1 to 15 parts by weight of isopropanol, f) from 1 to 10 parts by weight of acetone, and g) from 0.01 to 0.2 parts by weight of iso-tridecanol polyoxyethylene ether having a HLB value of 12 to 13, and a gas propellant.