91 results about "Cyclic alkane" patented technology

The invention provides a high octane number gasoline pool comprises at least 2% of di-branched paraffins containing 7 carbon atoms, and a process for producing this gasoline pool by hydro-isomerizing a feed constituted by a C5 to C8 cut which comprises at least one hydro-isomerization section and at least one separation section, in which the hydro-isomerization section and at least one separation section, in which the hydro-isomerization section comprises at least one reactor. The separation section comprises at least one unit and produces at least two streams: a first stream which is rich in di- and tri-branched paraffins, and possibly in naphthenes and aromatic compounds which is sent to the gasoline pool; and in a first version of the process, a second stream is produced which is rich in straight-chain and mono-branched paraffins which is recycled to the inlet of the hydro-isomerization section, while in a second version of the process, a second flux is produced which is rich in straight-chain paraffins which is recycled to the inlet of a first hydro-isomerization section and a third stream is produced which is rich in mono-branched paraffins which is recycled to the inlet of a second hydroisomerization section.

The epoxidation of cyclic, at least monounsaturated alkenes is conducted by a process, which comprises conducting the epoxidation of a cyclic, at least monounsaturated alkene in the presence of an oxidant in a reaction medium that contains at least 1% by weight of the saturated cyclic alkane corresponding to the cyclic, at least monounsaturated alkene. In a preferred embodiment the reaction medium contains at least 2.5% by weight of the saturated cyclic alkane corresponding to the cyclic, at least monounsaturated alkene.

The invention relates to a method for producing aromatic hydrocarbon and ethylene taking naphtha as a raw material. The method comprises the following steps of: (1) contacting naphtha with a reforming catalyst in a catalytic reforming region to carry out a shallow catalytic reforming reaction in the presence of hydrogen at the pressure of 0.15-3.0 MPa, the temperature of 300-540 DEG C and the volume space velocity of 2.1-50 h<-1>, enabling the conversion rate of naphthenic hydrocarbon in the naphtha to be higher than 85wt%, and enabling the conversion rates from alkane to aromatic hydrocarbon and C4-hydrocarbon to be lower than 30wt%; (2) carrying out aromatic hydrocarbon separation on reformate produced by catalytic reforming in a first aromatic hydrocarbon separation region, so as to obtain aromatic hydrocarbon-rich cut fraction and alkane-rich cut fraction; (3) introducing the aromatic hydrocarbon-rich cut fraction and liquefied gas produced by the catalytic reforming into a steam cracking region, and carrying out a cracking reaction to produce ethylene. According to the method for producing the aromatic hydrocarbon and the ethylene taking naphtha as the raw material, the ethylene can be maximally produced when the naphtha is adequately utilized in a shallow catalytic reforming reaction manner.

The invention discloses a hydrocracking catalyst carrier containing a beta molecular sieve, its preparation method and a hydrocracking catalyst with the carrier. The hydrocracking catalyst carrier contains a modified beta molecular sieve, amorphous silicon aluminum and alumina, wherein the modified beta molecular sieve is prepared by: subjecting a crystallized beta molecular sieve slurry directly to ammonium exchange and a template agent removal treatment, then first conducting a hydrothermal treatment, and performing an aluminum salt solution treatment, under the condition of maintaining a high beta molecular sieve crystallinity, removing part of non-framework aluminum uniformly, thus obtaining the beta molecular sieve with the characteristics of high Si/Al ratio, large specific surface area, appropriate acidity and acid distribution, and reasonable pore structure, etc. The modified beta molecular sieve especially has a suitable cracking effect and a very good isomerization effect on long-chain alkane and the long side chain alkyl of aromatic hydrocarbon and cyclane, and has a synergistic effect with amorphous silicon aluminum, so that the prepared hydrocracking catalyst has high activity, can produce maximum low condensation point diesel oil, and also can produce high quality hydrogenation tail oil as a byproduct.

The invention discloses a naphthenic hydrocarbon hydro-conversion catalyst and a preparation method and application thereof. The naphthenic hydrocarbon hydro-conversion catalyst comprises a carrier active metal Pt, wherein a carrier consists of 10 to 90 weight percent of hydrogen-type Y-Beta composite molecular sieve, and an inorganic refractory oxide; and the active metal Pt content of the catalyst is 0.05 to 0.6 percent. The catalyst is prepared by an immersion method; and the obtained catalyst can be applied to hydro-conversion of various naphthenic hydrocarbon-containing raw materials andhas high conversion rate, high naphthenic hydrocarbon ring opening rate and low cracking rate.

The invention discloses a hydrocracking catalyst carrier and a preparation method thereof. The hydrocracking catalyst carrier comprises: a modified beta molecular sieve, a modified Y type molecular sieve and alumina. Specifically, the modified beta molecular sieve is prepared by: subjecting a crystallized beta molecular sieve slurry directly to ammonium exchange and a template agent removal treatment, then first conducting a hydrothermal treatment, and performing an aluminum salt solution treatment, under the condition of maintaining a high beta molecular sieve crystallinity, removing part of non-framework aluminum uniformly, thus obtaining the beta molecular sieve with the characteristics of high Si/Al ratio, large specific surface area, appropriate acidity and acid distribution, and reasonable pore structure, etc. The modified beta molecular sieve especially has a suitable cracking effect and a very good isomerization effect on long-chain alkane and the long side chain alkyl of aromatic hydrocarbon and cyclane, and has a synergistic effect with the Y type molecular sieve, so that the prepared hydrocracking catalyst can have very high catalytic activity and middle distillate selectivity. And the condensation point of diesel fraction is substantially reduced, and the product properties of middle distillate are improved.

The invention discloses a hydrogenation method for producing lubricant basic oil with a low pour point and a high viscosity index. The hydrogenation method comprises the following steps: mixing raw material oil with hydrogen gas, then transporting the mixing to a hydro-cracking reaction unit, subjecting the reaction product which flows out from the hydro-cracking reaction unit to processes of separation and fractionation, recycling the obtained heavy tail oil fraction, then adding the heavy tail oil fraction into the hydro-cracking reaction unit, mixing the obtained tail oil fraction with hydrogen gas, and then transporting the mixture to a hydro-isomerization and pour-point reducing reaction unit to carry out hydro-isomerization reactions, pouring point reducing reactions, and hydrogenation saturation reactions so as to obtain the lubricant basic oil. The invention solves the problem that the quality of the lubricant basic oil cannot stay stable because the raw material quality turns bad, provides a hydrogenation method which can stably produce lubricant basic oil with an ultrahigh viscosity index; the obtained product has a high tail oil viscosity index, which can reach 140 or more, furthermore, the product is rich in chain alkane and mono-cyclic alkane and is a lubricant basic oil with a high viscosity index.

The invention relates to a base oil used during drilling operation, wherein the base oil is a synthetic base drilling fluid base oil with characteristics of environmental protection, low toxicity, high safety and low-temperature fluidity. According to the present invention, the synthetic base drilling fluid base oil is formed by mixing Fischer-Tropsch synthetic oil and non-conventional petroleum-derived fine chemical base oil, and contains at least 35% by mass of a variety of C9-C20 n-alkanes, at least 60% by mass of a variety of C9-C20 branched or cyclic alkanes, and less than 0.5% by mass of aromatic hydrocarbon, the kinematic viscosity of the synthetic base drilling fluid base oil at the temperature of 40 DEG C is 2-3 mm<2>/s, the pour point is -10 to -30 DEG C, and the flash point is 50-80 DEG C.

Extractive distillation for recovering aromatic hydrocarbons employs an extractive distillation column with a novel overhead system including a partial condenser. The process enables (i) efficient removal of heavy non-aromatics, particularly C₈ naphthenic compounds, from the EDC bottom stream to increase the purity of aromatic products, especially of the mixed xylenes and (ii) reduction (or better control) of benzene loss to the raffinate product stream to maintain its quality as a gasoline blend stock and, as a result, enhance benzene recovery in the aromatic products. Feedstock includes a full-range feedstock, such as pyrolysis gasoline, or a narrow-range feedstock, such as reformate.

A single pass direct conversion of biomass derived oxygenates to longer chain hydrocarbons is described. The longer chain hydrocarbons include higher naphthene content which is quite useful in the distillate range fuels or more particularly, the jet and diesel range fuels. Naphthenes help the biomass derived hydrocarbons meet product specifications for jet and diesel while really helping cold flow properties.

One exemplary embodiment can be a process for the isomerization of a non-equilibrium alkylaromatic feed mixture. The process can include contacting the non-equilibrium alkylaromatic feed mixture in a C8 isomerization zone. The C8 isomerization zone may include a first isomerization stage and a second isomerization stage. At the first isomerization stage, at least a portion of the non-equilibrium alkylaromatic feed mixture can be contacted at a first isomerization condition in a liquid phase in the substantial absence of hydrogen to obtain an intermediate stream. At the second isomerization stage, at least part of the intermediate stream and at least a part of a stream rich in at least one naphthene can be contacted at a second isomerization condition to obtain a concentration of at least one alkylaromatic isomer that is higher than a concentration of that at least one alkylaromatic isomer in the non-equilibrium alkylaromatic feed mixture.

It is an object to provide a novel laminating adhesive to thereby allow provision of a laminating adhesive composition for a laminate that provides good adhesion between a metal layer and a plastic layer, has satisfactory moisture barrier properties, heat resistance, insulation properties, durability, etc., also exhibits electrolyte resistance even after low-temperature curing, and does not undergo delamination over time. A laminate that uses the laminating adhesive composition and a secondary battery are also provided. The object is achieved by a laminating adhesive containing a non-chlorine-based polyolefin resin (A), an epoxy compound (B), and an organic solvent (C) including a cyclic alkane compound as an essential ingredient and further including an ester-based solvent or an alcohol-based solvent. In the organic solvent (C), the ratio, in parts by mass, of the cyclic alkane compound to the solvent other than the cyclic alkane compound is within the range of 1/1 to 20/1.

The invention relates to a method and a device for optimizing naphtha. The method comprises the following steps of: separating the naphtha into raffinate oil rich in alkane and extracted oil rich in alkane and aromatic hydrocarbon by adopting an extracting method and using a composite solvent, and separating the extracted oil from the used extracting agent; and the feeding the separated and purified raffinate oil serving as a pyrolytic raw material into an ethylene pyrolysis device for pyrolysis, and feeding the extracted oil serving as a reforming raw material into a catalytic reforming device for reforming. Based on adsorptive separation and extracting separation of the naphtha raw material, a process flow for optimizing the naphtha is designed; by adopting the extracting separation technology, the naphtha is separated into the raffinate oil rich in the alkane and the extracted oil rich in the alkane and the aromatic hydrocarbon; and washing, stripping and rectification processes are sequentially performed, and the extracting agent is recycled. The invention saves resources, reduces energy consumption, is favorable for sustainable development and improving the level of the whole oil refining and ethylene industry, and has great economic benefits, environmental benefits and social benefits.

Optical systems such as, for example, optical switches, are disclosed comprising a solid component and a refractive index-matching liquid composition interfaced with the solid component. The liquid composition has a refractive-index that is substantially equal to that of the solid component. In one approach the liquid composition is a saturated cyclic compound consisting essentially of carbon and hydrogen and optionally oxygen such as, e.g., cyclic alkanes, alcohols or ketones. In another approach the liquid composition is benzene substituted with one or more electron-donating groups attached directly to the ring and one of more fluoro groups attached to the ring or to the electron-donating groups. In yet another approach the liquid composition is a combination comprising one or more of benzene or substituted benzene and optionally at least one of an alkane or substituted alkane having a boiling point less than about 130° C. Also disclosed are methods for preparing a liquid composition having a predetermined refractive index at a predetermined temperature and methods for transmitting optical signals.

The invention provides a vinyl sulfonamide connector and application thereof. The structural formula of the vinyl sulfonamide connector is as shown in formula I, wherein X is selected from C or N; R is selected from one of or optional combination of hydrogen, amide, nitryl, hydroxyl, alkyl hydroxyl, aromatic hydroxyl, amino, alkyl amino, aromatic amino, sulfydryl, alkyl sulfydryl, aromatic sulfydryl, carboxylic acid, alkyl carboxylic acid, aromatic carboxylic acid, alkynyl, alkyl alkynyl, aromatic alkynyl, azide, alkyl azide, aromatic azide, carbonyl, alkyl carbonyl, aromatic carbonyl, aldehyde group, alkyl aldehyde group and aromatic aldehyde group; R1 is selected from one of or optional combination of hydrogen, linear, branched or cyclic alkane, acid, aldehyde group, linear carbonyl, benzyl or other aromatic benzyl and phenyl or other aromatic groups. The vinyl sulfonamide connector is high in selectivity and good in product stability.

A method for producing olefins and aromatic hydrocarbons with naphtha as a raw material comprises the steps: naphtha is subjected to liquid-liquid extraction, and an extract oil containing aromatic hydrocarbons and naphthenes and a raffinate oil containing alkanes and naphthenes are obtained, wherein the mass ratio of the naphthenes contained in the raffinate oil and the naphthenes contained in naphtha is 10-55%; the obtained raffinate oil is sent into a steam cracking zone and is subjected to a cracking reaction, obtained cracked gasline is hydrofined, and hydrofined cracked gasoline is obtained; the extract oil containing the aromatic hydrocarbons and the naphthenes is sent to a catalytic reforming zone and is subjected to a catalytic reforming reaction, and a reformed generated oil, a C3-C5 fraction and gas are obtained; and the obtained hydrofined cracked gasoline returns to the catalytic reforming zone to be used as a catalytic reforming raw material, or is mixed with naphtha and is subjected to liquid-liquid extraction, and the C3-C5 fraction obtained in the reforming reaction returns to the steam cracking zone and is subjected to a cracking reaction. The method can effectively utilize naphtha to produce more light-olefin aromatic hydrocarbons.

The invention provides compounds that are useful in the treatment of hepatitis C virus (HCV) infections. The compounds have the formula (1):

or a salt, N-oxide, tautomer or stereoisomer thereof, wherein A is CH or N; E is CH or N;

• • R¹ is selected from:
  • an optionally substituted acyclic C_1-8 hydrocarbon group wherein one carbon atom of the acyclic C_1-8 hydrocarbon group may optionally be replaced by O, S, NR^c, S(O) or SO₂, or two adjacent carbon atoms of the acyclic C_1-8 hydrocarbon group may optionally be replaced by CONR^c, NR^cCO, NR^cSO₂ or SO₂NR^c provided that in each case at least one carbon atom of the acyclic C_1-8 hydrocarbon group remains; and
  • an optionally substituted monocyclic carbocyclic or heterocyclic group of 3 to 7 ring members, of which 0, 1, 2, 3 or 4 are heteroatom ring members selected from O, N and S;
  • R² is hydrogen or X—R⁸;
  • X is a C_1-8 alkanediyl group wherein one carbon atom of the C_1-8 alkanediyl group may optionally be bonded to a —CH₂—CH₂— moiety to form a cyclopropane-1,1-diyl group or two adjacent carbon atoms of the C_1-8 alkanediyl group may optionally be bonded to a —(CH₂)_n moiety, where n is 1 to 5, to form a C_3-7-cycloalkane-1,2-diyl group;
  • R³ is an optionally substituted 3- to 10-membered monocyclic or bicyclic carbocyclic or heterocyclic ring containing 0-3 heteroatom ring members selected from N, O and S;
  • R⁴ is hydrogen or R^4a wherein R^4a is halogen; cyano; C_1-4 alkyl; fluoro-_1-4 alkyl; C_1-4 alkoxy; fluoro-C_1-4 alkoxy; hydroxy-C_1-4 alkyl; or C_1-2 alkoxy-C_1-4 alkyl;
  • R⁵ is hydrogen or R^5a wherein R^5a is selected from C_1-2 alkyl optionally substituted with fluorine; C_1-3 alkoxy optionally substituted with fluorine; halogen; cyclopropyl; and cyano;
  • R⁸ is hydroxy or C(═O)NR¹⁰R¹¹; provided that when R⁸ is hydroxy, there are at least two carbon atoms in line between the hydroxy group and the nitrogen atom to which X is attached;
  • R¹⁰ is hydrogen or C_1-4 alkyl; and
  • R¹¹ is hydrogen; amino-C_2-4 alkyl or hydroxy-C_2-4 alkyl;
  • but excluding the compounds 1-(3-benzoylphenyl)-ethylamine and 1-(3-furan-2-oylcarbonylphenyl)-ethylamine.

The invention relates to a new N-N-N tridentate ligand, relative rare-earth complex and relative application in the synthesis as poly-lactide acid or poly-caprolactone. The inventive ligand can be prepared from relative beta-diketone and amine via two-step condensation, the rare-earth complex can be prepared from the ligand with rare-earth alkyl compound or aamino-compound. The complex can catalyze lactide to open ring and polymerize to obtain polymer polyester, and catalyze caprolactone to polymerize. The formula of the complex is represented as above, wherein Ln is rare-earth metal ion as Y, Nd, Sm, Sc or the like, R1 is alkane of C_1-10, R2 is alkane of C_1-6, R2 is chain or cyclic alkane of C_1-10, and X is alkyl, amido or alkoxy bonded with rare-earth ion.

An elastomer composition comprising a softening agent (A) comprising a naphthenic hydrocarbon and optionally at least one selected from the group consisting of an aromatic hydrocarbon and a paraffinic hydrocarbon, and an elastomer (B) comprising a crosslinkable elastomer, wherein said softening agent (A) has a ratio of an amount of the paraffinic hydrocarbon CP, and an amount of the naphthenic hydrocarbon CN, CP/CNN, which are specified by ASTM D2140-97, of not less than 0 and not more than 1.5, and an amount of the aromatic hydrocarbon CA of not less than 0% and not more than 5% based on an amount of hydrocarbons in the whole softening agent.