219results about How to "Relaxed reaction conditions" patented technology

A kind of hydrocracking method by which the maximum industrial chemicals can be produced, the raw oil and hydrogen will go into the first reaction zone after being heated and contact with hydrofining catalyst and hydrocracking catalyst in turn, the gas which riches in hydrogen and gained after the gas and oil separating of the reactant will be compressed and recycled, the liquid will be fractioned and light naphtha, weight naphtha, diesel oil fraction and tail oil fraction can be gained, the diesel oil fraction will be mixed with the circular hydrogen after the it's press being added, and then contacts with hydrocracking catalyst. The reactant liquor of this step will be mixed with that of above step and go into the separation and fractionation system. The industrial chemicals more than 98% of the raw calculated by weight, which contains liquid gas, light naphtha, weight naphtha, and tail oil can be gained with the method.

The present invention is directed to reactor apparatus and processes for thermolysis of polypropiolactone to produce highly pure acrylic acid. In preferred embodiments of the present invention, the processes comprise introducing a feed stream comprising polypropiolactone to a thermolysis process vessel through an inlet; maintaining a concentration of active salt by adding and removing portions of active salt by at least one inlet and at least one outlet; heating the thermolysis process vessel; and recovering a product including acrylic acid from an outlet. In certain preferred embodiments, the active salt may be present as a catalyst used for polymerization of the polypropiolactone in the feed stream. In some embodiments, one or more active salts may be added to the feed stream and/or the thermolysis process vessel.

The invention relates to a preparation method of imatinib mesylate using N-(5-amino-2-methylphenyl)-4-(3-pyridyl)-2-pyrimidine amine and 4-[(4-methyl piperazine-1-yl) methyl] benzoic acid hydrochloride as starting materials, and quality control method for intermediate in the preparation process and the final product. The overall yield of the process is about 40%, and the process is characterized in that reaction conditions are mild, operations are simple, column chromatography and other time and energy consuming steps can be avoided, quality of obtained products is stable, the purity is greater than 99%, the production cost is low, and the technology is stable and feasible.

The invention relates to a novel method for generating bisphenol A and dialkyl carbonate by chemical degradation of waste polycarbonate (PC) to realize chemical recycling of the bisphenol A and the dialkyl carbonate. The method is characterized in that reusable ionic liquid such as chloridized 1-allyl-3-methylimidazole and bromized 1-butyl-3-methylimidazole is taken as a reaction medium and catalyst, and subjected to hydrolysis reaction or alcoholysis reaction at a temperature of between 60 and 170 DEG C; after reaction is over, bisphenol A products are obtained after extraction, distillation and other operations (as for alcoholysis reaction, the dialkyl carbonate is obtained simultaneously); reclaimed ionic liquid is directly reused without any treatment; and the yield of the bisphenol A is more than 93 percent. Compared with the prior art, the method has the characteristics that: firstly, the method overcomes the defects in the prior art that high-concentration inorganic strong acid/strong alkali is applied and can not be recycled; and secondly, due to adoption of the ionic liquid which has certain solubility on the PC as the reaction medium and the catalyst, the method relieves the reaction conditions on one hand and can realize reutilization of the ionic liquid on the other hand, and obviously solves the problems of equipment corrosion and environmental pollution.

The invention provides a coal tar hydrogenation system and a coal tar hydrogenation method. The method comprises a hydrogenation refining reactor, a separation unit and a hydrogenation cracking reactor, wherein the hydrogenation refining reactor is an up-flow fixed bed reactor, the hydrogenation cracking reactor is a down-flow fixed bed reactor, and the separation unit is a middle liquid separation tank; gas-liquid separation is performed on raw oil and hydrogen after a hydrogenation refining reaction, a part of liquid-phase heavy fractions is separated, one path is used as circulating oil and returned to perform the hydrogenation refining reaction again, and the other path is used as quenching oil after being cooled and added between catalyst bed layers for the hydrogenation refining reaction to play a role of cooling; and the other part of the liquid-phase heavy fractions is used as refined generated oil and mixed with hydrogen to perform a hydrogenation cracking reaction, and the obtained reaction product is combined with gas-phase light fractions after the gas-liquid separation to form the final product. The system and the method provided by the invention are low in equipment cost, simple to operate, capable of prolonging the life of the catalysts of the hydrogenation refining reactor and the hydrogenation cracking reactor, and suitable for raw oil with worse conditions.

An iron-based coal liquefying catalyst with high activity to increase the output coal-liquefied oil is prepared from iron-contained substance, used lubricating oil and powdered coal.

The invention relates to a method for synthesizing a kind of (methyl) acroleic acid glycidic glyceride. It is characterized in that: it takes (methyl) glyceride as raw material, and reacts with epichlorohydrin for ringopening and esterification under catalyst and inhibitor action; then carrying out ring-closure reaction with caustic soda to prepare (methyl) acroleic acid glycidic glyceride. Said catalyst is hexamethylenetetramine or chinoline, 1- methyl glyoxalinyl, and inhibitor is p-hydroxyanisole. The invention is characterized by easy got raw material, low consumption of epichlorohydrin, no utilization of organic disslovant during reaction, short process, simple operation, easy industrialization and little environmental pollution.

The invention provides a preparation method of 6-amino-7-fluoro-1,4-benzoxazine-3(4H)-ketone, which comprises the following steps: taking 2-(5-fluoro-2,4-dinitrobenzene oxygen) acetic acid as an initial raw material; carrying out hydrogenation reaction to generate 2-(5-fluoro-2,4-diaminobenzene oxygen) acetic acid; and then, carrying out cyclization reaction to obtain the 6-amino-7-fluoro-1,4-benzoxazine-3(4H)-ketone.

The invention discloses a method for preparing alpha-phenethyl alcohol. The method comprises the following steps: reacting acetyl benzene serving as the raw material, alcohol serving as a hydrogen source and supported alkaline earth metallic oxide as a catalyst for 1 to 10 hours at a the reaction temperature of between 60 and 130 DEG C; and after the reaction is finished, processing the reaction solution to obtain alpha-phenethyl alcohol, wherein the alcohol is C1 to C7 fatty alcohol or C3 to C7 alicyclic alcohol; the mole ratio of the acetyl benzene to the alcohol is 1:5-30; the supported alkaline earth metallic oxide consists of a carrier and alkaline earth metallic oxide supported on the carrier; the alkaline metallic earth oxide is MgO, CaO, SrO or BaO; the carrier is active carbon; and the supporting capacity of the alkaline earth metallic oxide is between 0.5 and 15 weight percent based on the mass of the carrier. The method for preparing the alpha-phenethyl alcohol has the advantages of mild required reaction condition, high activity and high selectivity of the catalyst, short reaction time, no other by-products in the reaction and no pollution to the environment, and is anenvironmental-friendly green synthetic route.

The invention discloses a method for producing diesel oil or a diesel oil blending component. The method comprises the following steps of: mixing Fischer-Tropsch synthetic oil and direct coal liquefaction oil to obtain mixed oil; and performing hydrofining and hydrogenation isocracking on the mixed oil and performing fractionation to obtain a diesel oil product or the diesel oil blending component. In the method provided by the invention, two types of oil prepared from coal can be transformed into clean diesel oil which is accordant with a European IV standard or the diesel oil blending component with a large cetane number. Compared with hydrogenation modification of the direct coal liquefaction oil, the method has the advantages of temperate reaction condition, low device investment costand low operation cost.

The invention relates to a method for producing low-aromatics solvent oil by hydrogenation. The method comprises the following steps of: passing raw material oil through a heating furnace, then fully mixing the raw material oil and hydrogen gas in an oil-gas mixer, and contacting with a hydrogenation catalyst in a lower hydrogen-oil volume ratio and under milder process conditions to undergo the common hydrogenated purification reaction. Compared with the conventional hydrogenated purification process, the method can achieve the same effect as the conventional purification process under milder process conditions. By the method, the low-sulfur and low-aromatics solvent oil products can be produced. In addition, the method also has the advantages of simple process flow, stable operation, high product properties and low energy consumption, and the new establishment of a hydrogenation device and the modification of the original device are both ok.

The invention provides a low-temperature sulfur alcohol etherification catalyst as well as a preparation method and application thereof. According to the catalyst, alkaline aid modified alumina is taken as a carrier, and NiO, MoO3 and WO3 are taken as active components. The low-temperature sulfur alcohol etherification catalyst contains the following components by weight (100% in total): 6wt%-15wt% of NiO, 0.1wt%-10wt% of MoO3, 0.1wt%-10wt% of WO3, 0.1wt%-5wt% of an alkaline aid oxide and the balance of an alumina carrier. The invention further provides the preparation method of the catalyst and application of the catalyst in sulfur etherification reaction for catalyzing sulfur alcohol, olefin or alkadiene in gasoline or liquefied petroleum gas. The catalyst provided by the invention is mild in reaction condition, high in reaction activity, high sulfur-alcohol removal efficiency and low in cost and can be applied to deep desulfurization processes of gasoline and liquefied petroleum gas.

The invention discloses a synthesizing method of veralkalcohol, which comprises the following steps: 1) reacting 3, 5-dimethoxy benzyl bromine and metal magnesium to generate 3, 5-dimethoxy benzyl magnesium bromide as Grignard reagent; 2) proceeding nucleophilic additional reaction for 3, 5-dimethoxy benzyl magnesium bromide and anisaldehyde to generate 3,5,4'-trimethoxydiphenyl alcohol; 3) dehydrating 3,5,4'-trimethoxydiphenyl alcohol to produce 3,5,4'-trimethoxydiphenyl ethane; 5) demethylating to obtain the product.

The invention relates to a diesel oil hydrodesulphurization method. According to the invention, raw oil and hydrogen are first delivered into a gas-liquid mixer through a heating furnace, such that hydrogen and raw oil are fully mixed; the mixture is delivered into a first reactor, and contacts a W-Mo-Ni hydrogenation catalyst under a hydrorefining condition; a common hydrorefining reaction is carried out, such that most of nitrides and part of sulfides are removed, and polycyclic aromatic hydrocarbons are subject to a hydrogenation saturation reaction; generated oil is delivered into stripping and hydrogen mixing equipment, such that hydrogen sulfide and ammonia dissolved in the oil are removed, and hydrogen reaches a dissolved and saturated state in the oil; the oil is mixed with supplemental hydrogen, and the mixture is delivered into a second reactor; the mixture contacts a Mo-Co series hydrorefining catalyst, and a deep desulphurization reaction is carried out, such that a good effect can be achieved. The method is provided aiming at inferior catalytic diesel oil fractions, coked diesel oil fractions or mixed diesel oil fractions of petrochemical enterprises. With the method, ultra-low-sulfur clean diesel oil with a sulfur content lower than 50mug/g or even lower can be produced.

The naphtha reconstituting treatment process includes the following steps: extraction separating naphtha to obtain extract oil and raffinate oil; cracking the raffinate oil in an ethylene steam cracking unit; and reforming the extract oil in a reforming unit. Compared with available technology, the present invention has over 30 % raised arene yield and over 40 % raised ethylene yield.

The invention belongs to the technical field of mesophase asphalt precursor synthesis methods, and particularly relates to a preparing method of high-purity arene oligomerization asphalt. The preparing method mainly solves the problems that according to an existing preparing method of the high-purity arene oligomeriation asphalt, reaction conditions are rigid, corrosion for equipment is strong, the cost is high and purification is difficult. The technical scheme of the preparing method of the high-purity arene oligomerization asphalt includes that arene chemical compounds are guided into a first stage reactor, catalysts are guided into a catalyst feeding system, after uniform mixing, the catalysts are input into the first stage reactor through the feeding system, after uniform mixing and reaction for 1-50 hours, materials in the first stage reactor are guided into a second stage reactor to react, materials in the second stage reactor are conveyed to a corrosion-resistant film evaporator, the residual catalysts are eliminated, and the arene oligomerization asphalt is formed. The preparing method of the high-purity arene oligomerization asphalt has the advantages of good reaction controllability, low-temperature efficient reaction, catalyst recycling, and good asphalt performance, and the like.

The invention discloses a low-viscosity turpentine-based monoterpene vinyl ester resin monomer and a preparation method and application thereof. The preparation method comprises the following steps of: under an oxygen-free environment, enabling turpentine monoterpene monomers to react with unsaturated carboxylic acid or anhydride to obtain monoterpene carboxylic acid or anhydride, then enabling the obtained monoterpene carboxylic acid or anhydride to react with unsaturated carboxylic acid glycidyl ester to obtain monoterpene unsaturated diglyceride, adding modifier for modification, and decolorizing by using activated carbon to obtain the turpentine-based monoterpene vinyl ester resin monomer, wherein the viscosity of the turpentine-based monoterpene vinyl ester resin monomer is 90-130mPa.s, the iodine value is 120-180 and the chromaticity through an iron-cobalt colorimetric method is 4-8. The turpentine-based monoterpene vinyl ester resin monomer prepared by adopting the preparation method has the advantages of low viscosity, low volatility, no toxicity, environmental friendliness and the like, and can be used as thinner of conventional unsaturated polyester resin; and cured resin has the advantages of good toughness, corrosion resistance, weather resistance and high product stability.

The invention discloses a method for separating free nucleic acids from a sample containing free nucleic acids, wherein the method includes the steps: adding protease K and a lysis-binding solution to a test sample, after centrifugation, adding alcohols and making contact with a solid carrier, making the free nucleic acids in the sample bind to the solid carrier, and then washing the solid carrier with one or more washing solutions; and finally, adding an eluant to the solid carrier, to obtain the target product free nucleic acids, wherein the pH of the lysis-binding solution is acidic, and all the steps are carried out at room temperature. The invention also discloses a system for separating the free nucleic acids, wherein the system includes the lysis-binding solution, the washing solution, the eluant, a liquid storage tube, a nucleic acid purification column tube, and a vacuum adapter tube. The method and system for separating the free nucleic acids have the advantages of simple operation, low cost, wide applicability, high yield, and reliable purity, and has wide application value and good market prospect.

The invention discloses a method for synthesizing 4-methylmorpholine N-oxide based on O2 oxidation catalyzed by ruthenium/nitrogen-doped porous carbon. According to the invention, under the conditionsof a pressure of 0.4-1 MPa and a temperature of 60-90 DEG C, ruthenium/nitrogen-doped porous carbon is used as a catalyst to catalyze a reaction of 4-methylmorpholine with O2 to synthesize 4-methylmorpholine N-oxide, wherein reaction time is 4-8 hours, and the amount of the used catalyst is 0.5 to 5 wt% of the mass of a reaction solution. The method of the invention overcomes the problems of large energy consumption in subsequent separation and wastewater pollution in conventional processes for using synthesizing 4-methylmorpholine N-oxide through H2O2 oxidation. The invention also provides amethod for preparing the ruthenium/nitrogen-doped porous carbon catalyst. The catalyst effectively mildens reaction conditions and improves the activity of 4-methylmorpholine N-oxide synthesized through O2 catalytic oxidation.

A hydrocracking method for producing heavy naphtha from a high-nitrogen stock comprises the following steps: mixing and heating a high-nitrogen raw oil and a hydrogen-rich gas, and enabling the heated mixture to enter a first reaction area to be subjected to hydrofining reaction and hydrocracking reaction; performing cooling, oil-gas separation and fractional distillation on the reactant flow to obtain light naphtha, heavy naphtha and tail oil distillates; and pressurizing the tail oil distillates, then mixing the pressurized tail oil distillates with recycle hydrogen, and enabling the mixture to enter a second reaction area to be subjected to hydrocracking reaction. In the second reaction area, the tail oil distillates which are difficult to convert can be all converted into naphtha distillates under the conditions of high airspeed and low severity. The method provided by the invention can be used for reducing the yield of products with relatively low added value, such as dry gas, liquefied gas and light naphtha, and improving the selectivity of heavy naphtha.

The invention provides an alkadiene selective hydrogenation catalyst and a preparation method thereof. The carrier of the catalyst adopts carboxyl-functionalized step hole FZIF-8; active components adopts palladium; the active component palladium accounts for 0.1 to 10 percent on the basis of the total weight of the carrier of the catalyst. The invention further provides the preparation method of the alkadiene selective hydrogenation catalyst. A step hole structure is formed in the carrier of the alkadiene selective hydrogenation catalyst, so that carboxyl groups have accessibility, and the active components and the carboxyl groups can interact mutually; the carboxyl groups are contained in the carrier of the catalyst, can anchor the active components, realize high dispersion of the active components, meanwhile prevent agglomeration and drain of the active components during the process, and ensure that the catalyst is high in activity. The catalyst can be applied to the hydrogenation upgrading of FCC petrol, removal of alkadiene in the petrol, and is mild in reaction condition, low in reaction temperature and pressure, and good in selective hydrogenation effect of products.