84results about How to "Reduce the severity of the reaction" patented technology

The invention discloses a coal tar suspended bed hydrocracking method which comprises the steps of pretreating coal tar; mixing the coal tar with a catalyst and a catalyst promoter to form even raw material oil slurry; putting the raw material oil slurry into a suspended bed reactor; enabling a reaction product to enter a hot high-pressure separator, a warm high-pressure separator, a cold high-pressure separator and a cold low-pressure separator; separating the reaction product; circulating separated hydrogen; enabling separated liquid and catalyst to enter an atmospheric vacuum device to distill out a product and a catalyst, wherein the catalyst can be used circularly. The method has the advantages of low back mixing degree of materials in the reactor, wide raw material adaptability and flexibility in operation.

The invention discloses a petroleum hydrocarbon catalytic conversion method. The petroleum hydrocarbon catalytic conversion method comprises the following steps that raw oil contacts a mesoporous zeolite-rich catalyst in a first reaction zone of a reactor and undergo a cracking reaction; a reactant flow and a part of the raw oil are fed into a second reaction zone of the reactor and further undergo a cracking reaction; reaction oil gas and a catalyst needing to be regenerated are separated out, wherein the catalyst needing to be regenerated is subjected to steam stripping and burning regeneration and then is fed back to the reactor; the reaction oil gas is subjected to separation to form a desired ethane product, propylene and aromatic hydrocarbon-rich catalytic gasoline; the aromatic hydrocarbon-rich catalytic gasoline is subjected to selective hydrogenation and then is fed into a aromatic hydrocarbon extraction device to produce a desired light aromatic hydrocarbon product by separation; and the extract oil obtained by the previous step is fed back to the first reaction zone of the reactor. Through petroleum hydrocarbon catalytic conversion method, an ethene yield is 22.43 wt%; a propylene yield is 33.22 wt%; and a benzene-toluene-xylene mixture yield is 25.28 wt%.

The present invention discloses one-section cascade hydrocracking process, and features the hydrocracking unit comprising one hydrocracking pre-treating reactor filled with pre-treating catalyst and hydrocracking catalyst and one hydrocracking reactor filled with hydrocracking catalyst and post-hydrotreating catalyst connected serially. Compared with available technology, the hydrocracking unit of the present invention has the advantages of raised integral activity, increased treating capacity or increased operation period, and raised product quality.

The invention relates to the field of resources and environments, in particular to a method for secondary aluminum ash recycling. The method comprises the following steps that S1, secondary aluminum ash is ground and then sieved, a caustic soda (NaOH) solution and an anti-boiling agent are added into a sieved object, a full reaction is conducted at the normal pressure till no bubble is generated,and ammonia, hydrogen and methane are collected; and S2, under the condition of the high temperature and high pressure, filtrate obtained after filtering is diluted, the diluted filtrate is cooled tothe room temperature, and aluminum hydroxide crystals are separated out; and aluminum hydroxide obtained after filtering is calcined and dehydrated to obtain aluminum oxide. The method for efficientlyrecycling the secondary aluminum ash is provided.

The invention relates to the field of hydrogenation for preparing cyclohexane-1,2-dibasic diformate, and discloses a preparing method for cyclohexane-1,2-dioctyl phthalate dibasic ester. The method comprises the steps that firstly, hydrogenation raw materials containing phthalic acid dibasic ester and H2 are subjected to first contact in a main hydrogenation reactor in the presence of a first catalyst, and first gas-liquid mixing fluid is obtained; secondly, the first gas-liquid mixing fluid is subjected to gas-liquid separation; thirdly, hydrogen is injected into main hydrogenation reaction liquid through holes with the average hole diameter being the nanometer size, the main hydrogenation reaction liquid is separated out in the second step, and second gas-liquid mixed fluid is obtained; fourthly, the second gas-liquid mixed fluid is subjected to second contact in a rear hydrogenation reactor in the presence of a second catalyst, and third gas-liquid mixed fluid is obtained; and fifthly, the third gas-liquid mixed fluid is subjected to gas-liquid separation. The method has the beneficial effects that the raw material conversion rate, the product selectivity and the cis-structure product content are high.

The invention relates to a deep desulfurization method of gasoline. A gasoline raw material firstly enters a first reactor to remove dialkene and simultaneously mercaptan becomes heavier; the gasoline raw material then enters a fractionating tower to be cut and fractioned into light and heavy gasoline; heavy gasoline enters a second reactor to remove the vast majority of sulfide, and a reaction product enters a third reactor to further undergo desulfurization; and a heavy gasoline hydrodesulfurization product obtained is mixed with the light gasoline so as to obtain a qualified gasoline product. By additionally arranging the third reactor after the second reactor, further deep desulfurization is realized. Meanwhile, reaction severity of the second reactor is remarkably reduced, and octane number loss and hydrogen-consumption optimization are realized.

The invention relates to a method for catalyzing gasoline deep desulfurization with an Ni-Mo-Co containing catalyst. Specifically, a gasoline raw material enters a first reactor to undergo selective hydrodesulfurization and then enters a second reactor to further undergo deep desulfurization. The hydrodesulfurization catalyst adopted by the second reactor is the Ni-Mo-Co containing catalyst. The catalyst has certain desulfurization activity, and at the same time has little olefin saturation, after combination with the first reactor, further deep desulfurization can be realized, and simultaneously the reaction severity of the first reactor can be significantly reduced, so that the octane number loss and hydrogen consumption can be optimized.

This invention relates to the preparation of the biological diesel fuel from the fat acid triglyceride, and special from the animal, vegetable tallow and oil. This invention takes the solid alkali as the catalyst, and the addition of the amine is as the third component. It can gain the high ratio of conversion and the lifetime of the catalyst is long. Comparing to the existing technology, the process of this invention is simple, the condition is moderate, the conversion is high, the by-product is less, and the lifetime of the catalyst is long. The diesel fuel can be produce from the animal and vegetable tallow and oil.

The invention provides a method and a device for preparing hydrogen by hydrolysis of hydroboron, and an application. The method comprises the steps of preparing hydrogen by hydrolysis of hydroboron under an alkaline condition; loading metal cobalt and metal cerium or zirconium to a molecular sieve as a bimetallic catalyst; and adding urea as a reaction stabilizer. By adopting the method and the device, hydrogen production by hydrolysis of hydroboron known at present is selected as an efficient hydrogen production system; a novel stabilizer is added to control the intense degree of the reaction and keep the hydrogen production rate stable; the reaction is more efficient by adopting a homemade catalyst; and simple purification is carried out in a hydrogen collection process. The hydrogen production method can be directly applied to a miniature fuel cell with certain powder; and extra storage, purification and drying devices are not needed.

The invention discloses a synthesis method for Amantadine Hydrochloride, which comprises the steps of hydrogenation, isomerization and amination, hydrolysis, refining, etc. to get Amantadine Hydrochloride finished product. Compared with the prior art, Trichloro ethane is adopted as solvent in the isomerization and amination steps, and bromination is cancelled, so that atmospheric pollution is lessened remarkably, and environmental pollution in the traditional process in Amantadine Hydrochloride synthesis is effectively solved. The invention has the advantages of no pollution, environmental friendliness, and better market application prospect.

The invention discloses a production technology of a sandwich core-spun yarn. The central part of the yarn is composed of 100% pure magnesium pellets, the middle layer is composed of mixed powders, and the outermost layer is formed by rolling a steel strip. According to the technological method, three hoppers capable of regulating flow are used to replace an original single hopper. A second hopper is used for holding the pure magnesium pellets, and a first hopper and a third hopper are used for holding the same mixed powders composed of silicon iron, calcium silicon, rare earth ferrosilicon and the like. The low-carbon steel strip of 0.2-1 mm thick is rolled by a core spinning unit to obtain a sandwich core-spun yarn with the yarn diameter of phi 9-16mm and different magnesium contents. The production technology has advantages as follows: production cost is low; magnesium absorptivity is raised; and the product can be prepared at arbitrary ratio of components.

The invention relates to a stable synthetic method for TON zeolite. According to the method, zeolite crystallization mother liquor with a TON structure is used as an inductive agent for synthesis of zeolite with the TON structure. The method comprises the following steps: adding the TON zeolite crystallization mother liquor into initial gel in proportion and carrying out a hydro-thermal reaction under sealing conditions so as to obtain a TON zeolite product with a crystallization degree of more than 97%. According to the method, mother liquor produced in primary crystallization of TON zeolite is recovered and utilized; the TON zeolite product with high purity can be obtained in a short period of time under the condition of standing or nonviolent stirring; so the success rate of synthesis of the zeolite is increased, and growth of crystal phases like ZSM-5 and cristobalite is prevented.

The invention discloses low-cost magnesium-treated microalloyed steel and a preparation method thereof. The preparation method for the low-cost magnesium-treated microalloyed steel comprises working procedures of steel smelting, alloying, cored wire feeding, continuous casting, rolling and the like. After Ruhrstahl-Heraeus (RH) refining is finished, a magnesium-aluminum-iron alloy is fed to moltensteel at a certain speed and used for partially replacing elements such as niobium, vanadium and titanium which are used for alloying in the refining working procedure. Large-amount precipitation ofsecond-phase particles of steel in solidifying and rolling processes can be promoted. The microalloying function of niobium, vanadium and titanium is replaced partially, and the structure and propertyof steel are improved. Because metal magnesium is lower in price, expensive alloying elements such as niobium, vanadium and titanium are replaced, and the production cost of steel can be effectivelylowered. The property of the magnesium-treated low-carbon microalloyed steel acquired with the preparation method is close to or exceeds the property of standard steel without addition of magnesium, the alloying cost of a ton of steel is lowered by more than twenty-five RMB, and the preparation method for the low-cost magnesium-treated microalloyed steel is a novel steel microalloying technology.

The invention discloses a processing method of Fischer-Tropsch synthetic oil. Fischer-Tropsch synthetic oil is used as a raw material, and a two-stage hydrogenation process of hydrofining-hydro-upgrading-isodewaxing is adopted to produce API III <+> lubricating oil base oil. Generated oil obtained through separation of a hydrofining-hydro-upgrading reaction effluent enters an isodewaxing reactionzone, and different types of API III <+> lubricating oil base oil products are obtained through separation and fractionation of an isodewaxing reaction effluent. The method has the advantages of simple process flow and wide raw material adaptability, and can be suitable for the process of producing special oil products with good stability by Fischer-Tropsch synthetic oil fraction hydrogenation.

The invention provides a reactor for preparing isocyanate and a method of the reactor for preparing isocyanate. The reactor comprises an inner feeding pipe, an outer feeding pipe, a mixer shell, a neck expanding pipe, an auxiliary feeding pipe and a reaction tube, wherein phosgene enters the reactor from the outer feeding pipe and the auxiliary feeding pipe. A coking material in a phosgenation reaction process can be effectively reduced; the running period of the reactor is improved; the conversion rate of the reaction process is improved; and the purity of a reaction liquid is improved.

The invention discloses a processing method of Fischer-Tropsch synthetic oil. Fischer-Tropsch synthetic oil is used as a raw material, and a two-stage hydrogenation process of hydrofining-hydro-upgrading-isodewaxing is adopted to produce API III <+> lubricating oil base oil. Heavy distillate oil generated oil obtained through hydrofining-hydro-upgrading reaction effluent separation enters an isodewaxing reaction zone, and an isodewaxing reaction effluent is subjected to separation and fractionation to obtain different types of API III <+> lubricating oil base oil products. The method has the advantages of simple process flow and wide raw material adaptability, and can be suitable for the process of producing special oil products with good stability by Fischer-Tropsch synthetic oil fractionhydrogenation.

The invention discloses a method for prolonging the quality stability of a hydrocracking product. The method comprises the following steps that hydrocracking raw materials and hydrogen gas are mixed to enter a hydrocracking pretreatment reactor for refining reaction; reaction effluents enter a hydrocracking reactor for hydrocracking reaction; four hydrocracking catalyst bed layers are arranged inthe hydrocracking reactor; when the conversion rate of fractions higher than 350 DEG C in hydrocracking raw materials is 90 to 99 percent, a hydrogenation posttreatment catalyst bed layer is arrangedat each of the top and the bottom of any one hydrocracking catalyst bed layer; the volume ratio of posttreatment catalysts filled along the material flow direction is (3 to 7):(5 to 15):(5 to 25):(20to 40):(30 to 50); the volume ratio of the hydrogenation posttreatment catalysts in the hydrocracking reactor to hydrocracking catalysts filled in the hydrocracking reactor is 1:(6 to 8); after hydrocracking products are separated, various products are obtained. By the method, the stability of the hydrocracking products can be obviously improved.

The invention discloses a method for improving the quality of hydrocracking products. The method comprises the following contents: a hydrocracking material and hydrogen are mixed and then enter a hydrocracking pretreatment reactor, so as to be subjected to refining reaction; a reaction effluent enters a hydrocracking reactor, so as to be subjected to hydrocracking reaction; a hydrogen aftertreatment catalyst is filled between the bottom of the hydrocracking reactor and beds of a hydrocracking catalyst; and a hydrocracking product is separated, so that various products are obtained. The methodcan solve the ubiquitous problems of high heavy naphtha bromine index, high mercaptan and excess aviation fuel product sulphur in middle and later stages of reaction in the process of hydrocracking reaction of aftertreatment catalysts.

The invention discloses a surface modification treatment method for a titanium metal implant material. According to the method, titanium metal is subjected to reduction treatment to obtain the surface characteristic rich in surface oxygen vacancies, so that the osseointegration capacity of the titanium metal and a matrix is promoted. According to the titanium metal surface rich in oxygen vacancies, the proportion of the oxygen vacancies is 5% to 40%. The prepared titanium metal rich in oxygen vacancies on the surface has the excellent capability of accelerating osseointegration of an implant and the matrix. The adopted treatment and preparation method is simple, high in controllability and suitable for industrial preparation and treatment of bone tissue repair titanium metal materials for biomedicine.