201 results about "Partial hydrogenation" patented technology

A process has been developed for producing diesel boiling range fuel from renewable feedstocks such as plant oils and animal oils, fats, and greases. The process involves treating a renewable feedstock by hydrogenating and deoxygenating i.e. decarboxylating, decarbonylating, and/or hydrodeoxygenating to provide a hydrocarbon fraction useful as a diesel boiling range fuel or diesel boiling range fuel blending component. If desired, the hydrocarbon fraction can be isomerized to improve cold flow properties. A portion of the hydrogenated and deoxygenated feedstock is selectively separated and then recycled to the treatment zone to increase the hydrogen solubility of the reaction mixture.

The invention relates to polyketone compounds and the at least partially hydrogenated products thereof, the use of said polyketone compounds and/or the at least partially hydrogenated products thereof as plasticizers, processes of making polyketone compounds and the at least partially hydrogenated products thereof, compositions comprising the polyketone compounds and/or the at least partially hydrogenated products thereof, and to articles formed from products of the invention.

A novel process for the selective elimination of fatty acid compounds containing carbon-carbon double bonds in trans configuration from a substrate containing cis- and trans-isomers of said fatty acid compounds, by selective adsorption by a microporous zeolite material is disclosed. The pore size and shape of usable zeolite materials enable differentiation between cis- and trans-isomers of unsaturated fatty acid chains. The zeolite materials used have a selectivity ratio alphatrans/cis higher than 1.00; this ratio is defined based on the elution properties of cis and trans double bond containing fatty acid methylesters dissolved in n-hexane during a column chromatography experiment with the zeolite material as the stationary phase and n-hexane as the mobile phase. Besides selective adsorption of trans-unsaturated fatty acid compounds, simultaneous or subsequent total or partial hydrogenation of the double bonds in said compounds can be carried out while using the same or similar zeolite material, containing finely dispersed catalytic active metals. The majority of these catalytic active sites must be inside the pores.

The present disclosure provides low trans-fatty acid fat compositions, methods of hydrogenating unsaturated feedstocks (e.g., oils), and hydrogenation catalyst compositions. One exemplary method involves producing an activated catalyst composition by heating a nickel-based catalyst to a first temperature of at least about 100° C. in the presence of hydrogen and a fat component. An unsaturated feedstock may be contacted with the activated catalyst composition and hydrogenated by sustaining a hydrogenation reaction at a second temperature of no greater than about 70° C. Some specific implementations of the invention permit the production of partially hydrogenated seed oils with low trans-fatty acid contents.

The present invention relates to the preparing technology of composite rubber material. Carbon nanotube via surface treatment and liquid rubber are ultrasonically mixed and added into partial hydrogenated nitrile-butadiene rubber to prepare mother rubber; the mother rubber is mixed with the rest hydrogenated nitrile-butadiene rubber, carbon black, zinc oxide and sulfurizing agent, and the mixture is mixed in a rolling mixer or a Banbury mixer and sulfurized to obtain the carbon nanotube modified hydrogenated nitrile-butadiene rubber. The present invention has the beneficial effects of raised heat performance, antiwear performance, mechanical strength, antiageing performance, etc. raised use performance and expanded application range.

A partially hydrogenated fatty substance produced by partial hydrogenation of a substrate, such as vegetable, animal or marine oil, said partially hydrogenated substance having a low content of trans fatty acids. When the hydrogenation degree is below 30% the trans-fatty acid concentration can be expressed in the following way: trans<=0.3x(initial IV-IV) in %. of the total amount of fatty acids, wherein IV refers to iodine value. When the hydrogenation degree is between 30 and 70% the trans-fatty acid concentration can be expressed with: trans<=0.09xinitial IV in % of the total amount of fatty acids. The partial hydrogenation is performed by a process in which the substrate, hydrogen gas and a solvent are mixed, and the whole mixture is brought into a supercritical or near-critical state. This substantially homogeneous super-critical or near-critical solution is led over the catalyst, whereby the reaction products formed, i.e. the hydrogenated substrates, will also be a part of the substantially homogeneous super-critical or near-critical solution.

Processes are provided for the storage and release of hydrogen by means of a substantially reversible catalytic hydrogenation of extended pi-conjugated substrates which include large polycyclic aromatic hydrocarbons, polycyclic aromatic hydrocarbons with nitrogen heteroatoms, polycyclic aromatic hydrocarbons with oxygen heteroatoms, polycyclic aromatic hydrocarbons with alkyl, alkoxy, nitrile, ketone, ether or polyether substituents, pi-conjugated molecules comprising 5 membered rings, pi-conjugated molecules comprising six and five membered rings with nitrogen or oxygen hetero atoms, and extended pi-conjugated organic polymers. The hydrogen, contained in the at least partially hydrogenated form of the extended pi-conjugated system, can be facilely released for use by a catalytic dehydrogenation of the latter in the presence of a dehydrogenation catalyst which can be effected by lowering the hydrogen gas pressure, generally to pressures greater than 0.1 bar or raising the temperature to less than 250° C. or less, or by a combination of these two process parameters.

The invention discloses a hydrogenated polystyrene-b-styrene/butadiene/isoprene random copolymer as well as a preparation method and application thereof. The hydrogenated polystyrene-b-styrene/butadiene/isoprene random copolymer is obtained by hydrogenating a mixed polymer consisting of Sn-b-BSmIR, (Sn-b-BSmI)2Si(CH3)2, (Sn-b-BSmI)3SiCH3 and (Sn-b-BSmI)4Si. The preparation method comprises the following steps: preparing a polystyrene block at first, then grafting a styrene/butadiene/isoprene random copolymer block to the polystyrene block, further coupling by using a compound coupling agent, and finally performing partial hydrogenation to obtain the hydrogenated polystyrene-b-styrene/butadiene/isoprene random copolymer. The preparation method is simple and low in cost, and the prepared hydrogenated polystyrene-b-styrene/butadiene/isoprene random copolymer is good in mechanical property and ageing resistance and has vulcanizable double bonds; and after the random copolymer is vulcanized, the prepared vulcanized rubber has very good elasticity, keeps relatively good rigidity and strength, is good in ageing resistance, and is suitable for outdoor sealing materials.

The invention relates to a method for conversion of low-hydrogen heavy oil to light fractions by hydrogenation with hydrogen-supplying hydrocarbons, which is a process for conversion of heavy oil such as coal pitch by hydrogenation with hydrogen-supplying hydrocarbon stream enriched in hydrogen-supplying hydrocarbons. The method has the effects of inhibiting condensation coking speed, increasing liquid product yield in the process of conversion of coal tar heavy oil to light fractions, improving product quality, reducing reaction temperature increase and enhancing stability and safety of device operation. The hydrogen-supplying hydrocarbon stream can be hydrogenation reaction effluents in partial hydrogenation saturation process of bicyclic aromatic hydrocarbons or polycyclic aromatic hydrocarbons or oil products enriched in partial saturated aromatic hydrocarbons obtained in the separation process of bicyclic aromatic hydrocarbons or polycyclic aromatic hydrocarbons. The precursor substance of hydrogen-supplying solvent oil is coal tar fractions with boiling points of 350-450 DEG C, and the hydrogen-supplying solvent oil mainly comprises hydrocarbon components with ordinary boiling points of 350-450 DEG C. The combination of the method for conversion of coal tar heavy oil to light fractions by hydrogenation and method for conversion of coal tar light fractions by hydrogenation constitutes a novel combined process for conversion of full-range fractions of coal tar by hydrogenation.

The invention discloses acid-resistant non-dairy creamer and a preparation method thereof, and the acid-resistant non-dairy creamer comprises the following components by weight percent: 20-35% of partially hydrogenated vegetable oil, 5-15% of starch sodium octenylsuccinate, 0.3-0.7% of monoglyceride, 0.3-0.7% of sodium stearoyl lactylate, 0.2-0.4% of silicon dioxide and the balance of glucose syrup. A product can solve the difficult problem that the non-dairy creamer in the prior art has no acid resistance, simplify the application method of the non-dairy creamer in the prior art, reduce the uncertainty of the process, reduce auxiliary supplementary materials required during applications and expand the range of the applications.

The invention discloses a plant lipid cream and production method thereof. The plant lipid cream is prepared by the steps that proteolytic enzyme is utilized to restrict hydrolyzed soy separation, soas to obtain soy proteolysis solution; the soy proteolysis solution is mixed with partially hydrogenated plant oil, sucrose, starch syrup, sodium alginate tech grade, carrageenan, microcrystalline cellulose, phosphate, edible emulsifier; and then filtering, aqueous phase material preparation, oil phase material preparation, mixing, blending, secondary homogeneity, aging, filling and packing are carried out sequentially. The invention modifies enzymolysis of isolated soy protein, dissolubility, dispersity and emulsibility are obviously improved, and the functional characteristic is close to casein, thus substituting application of nutrose in plant lipid cream; plant raw materials are adopted, raw material cost is reduced, thus having positive significance on nutrition and health care function; the product has favourable mouthfeel and flavour; and the production method of the invention is based on plant lipid cream similarity processing technology, utilizes biological enzyme technology and has wide applicability.

A method is disclosed for making a polyol comprising: fully-epoxidizing a partially hydrogenated vegetable oil to obtain a fully-epoxidized vegetable oil derivative having an iodine value less than 4 g I₂/100 gram, an EOC of from 4.0 to 5.7% and a Gardner color value of 2 or less; and then reacting the fully-epoxidized vegetable oil derivative with a ring opener to form a polyol having a hydroxyl number from 40 to 80 mg KOH/gram, a number average molecular weight of at least 1500 Daltons, a dynamic viscosity less than 10 pascal-seconds, and an EOC below 3.0 wt %.

The invention relates to a continuous preparation method of hydrogenated bisphenol A. The method comprises the following steps: carrying out a hydrogenation reaction on a prepared bisphenol A raw material in a fixed bed hydrogenation reactor under the action of a precious metal supported hydrogenation catalyst, returning the obtained hydrogenation products to the reactor according to a certain proportion in order to carry out cycle hydrogenation in order to control the ratio of the cis-trans structure in the hydrogenation product, and carrying out gas-liquid separation, normal pressure solvent removal, reduced pressure byproduct removal and sheeting treatment on the extracted partial hydrogenation products to obtain the final hydrogenated bisphenol A product, and recycling separated hydrogen and solvent. The method has the advantages of simple process flow, high controllability of the reaction process, realization of continuous preparation of the hydrogenation products, stable performances of the target product, and increase of the cis-trans isomer ratio in the hydrogenation products through the partial cycling process of the hydrogenation products, and allows the converstion rate of the hydrogenation reaction to reach 100%, the selectivity to be more than 95%, the purity of the product to be more than 97% and the cis-trans isomer ratio to reach 60%.

The invention, belonging to the technical field of explosive preparation, particularly relates to an emulsion explosive prepared by using hydrogen storage materials. The explosive comprises an emulsion base and a sensitizing agent, wherein, the sensitizing agent is titanium hydride, the weight of the sensitizing agent accounts for 0.6-8 % of the total weight of the titanium hydride hydrogen storage emulsion explosive, and the purity of titanium hydride is no less than 95 %. During the detonation process, partial titanium hydride reacts with water in the emulsion base to release a little hydrogen, thus a certain foaming effect on the emulsion base is achieved, and the emulsion base is allowed to detonate, so that titanium hydride plays a role as the sensitizing agent. Simultaneously, the rest titanium hydride is subject to thermal decomposition under the effect of high temperature generated by the reaction between emulsion base and hydrogen bubbles to rapidly release hydrogen, and hydrogen continues participating the detonation reaction with the emulsion base to allow the output energy to contain the energy released by the emulsion base and titanium hydride together. The titanium hydride hydrogen storage emulsion explosive disclosed herein has the characteristics of low output explosion pressure, large impulse, long decay time, and high energy.

The invention provides a fluidized bed low-temperature destructive distillation system and a low-temperature destructive distillation method of low-rank coal. According to the method, a mixed gas of hot coal gas produced by a gasification furnace and circulation cold coal gas is adopted as a hot carrier and a fluidizing gas of a destructive distillation reaction. A hydrogen atmosphere of coal gas can provide a partial hydrogenation effect, such that obtained tar has the advantages of high light component content, good quality, high thermal efficiency, and high yield. Also, with the method, a two-stage low-temperature destructive distillation reactor is adopted, such that the retention time of solid particles in the reactor is increased, destructive distillation effect is improved, high solid content in the bed can be maintained, and operation stability can be maintained. The invention also provides a low-temperature destructive distillation reactor. The low-temperature destructive distillation reactor is the two-stage low-temperature destructive distillation reactor, such that the retention time of solid particles in the reactor is increased, and destructive distillation effect is improved. With the two-stage low-temperature destructive distillation reactor, high solid content in the bed can be maintained, and operation stability can be maintained.

In one aspect, the present invention provides a system for methods of producing and releasing hydrogen from hydrogen storage compositions having a hydrogenated state and a dehydrogenated state. In the hydrogenated state, such a composition comprises a hydride and a hydroxide. In a dehydrogenated state, the composition comprises an oxide. A first reaction is conducted between a portion of the hydride and water to generate heat sufficient to cause a second hydrogen production reaction between a remaining portion of the hydride and the hydroxide.

The invention relates to a process for preparing 1-octene by telomerization of 1,3-butadiene using a reducing agent in the presence of a telomerization catalyst and partial hydrogenation of the octadiene obtained in this way.

The invention provides a production method and a production system of cyclohexanone. The method comprises the following steps of (1) a partial hydrogenation process of benzene; (2) an extractive distillation process; (3) a cyclohexanone treatment process; (4) a hydration process; (5) a hydrogenation catalyst regeneration process; (6) a hydration catalyst regeneration process; (7) a cyclohexanol dehydrogenation process; and (8) an alcohol ketone refining process. According to the production method and the production system of the cyclohexanone provided by the invention, a traditional production process and a traditional production system for preparing the cyclohexanone through a cyclohexene hydration method are optimized, the conversion rate of the raw material benzene is improved by more than 95 percent from 75 percent compared with a traditional process, the usage amount of new hydrogen during the partial hydrogenation process of the benzene is reduced, the selectivity of extraction agents during the extractive distillation process is improved, the extractant volume is reduced, the number of equipment is reduced, the space occupied by the equipment is reduced, and the like.