1260results about How to "Lowering the freezing point" patented technology

The invention discloses a hydrodewaxing catalyst and its preparation method. With the weight of the catalyst as the reference, the catalyst contains the following components of: by weight, 5-10% of tungsten oxide, 1-5% of nickel oxide, 40-50% of nanometer ZSM-5 molecular sieve, 10-40% of macroporous alumina and the balance being a binder. The catalyst is prepared by the following steps of: firstly kneading the nanometer ZSM-5 molecular sieve, macroporous alumina and the binder to prepare a carrier, dipping loaded active metal, and finally carrying out hydrothermal treatment. The hydrodewaxing catalyst provided by the invention has a good shape-selective catalysis function and simultaneously has a good hydrofinishing function, and is especially suitable for the hydrofinishing and pour point reduction processes of a waxy hydrocarbon oil material containing high content of impurities such as sulfur, nitrogen and the like.

A squeezable assembly (9) for shelf-stable, chilled or frozen pasty products comprising—a body formed by a tube or a container presenting a bottom (11), lateral walls (15) and a rim (12) in the accordion form,—a rigid plastic cap (13) attached to the end of the tube or the rim (12) of the container comprising an aperture (16),—a cover seal (14) to close the aperture (16) and—a product (2) contained in the assembly (19).

A process for preparing the clean diesel oil by hydromodifying, isomerizing and lowering pour point features that the fractional oil raw material and H2 pass through a catalyst bed to obtain clean high-quality diesel and the naphtha product with low contents of sulfur and nitrogen and high content of arylhydrocarbon. Said catalyst bed contains hydrocatalyst bed containing beta zeolite (0.5-20 wt.%).

The invention discloses a hydro-cracking method for blending ethylene bottom oil, which is different from the method for processing the conventional ethylene bottom oil and comprises the following steps: blending an ethylene bottom oil light end into a conventional hydro-cracking raw material for hydro-cracking, in the presence of hydrogen, sequentially contacting the ethylene bottom oil light end with a hydro-guard catalyst, a hydro-refining catalyst, a hydro-residue carbon removing catalyst and a hydro-cracking catalyst; separating an effluent of hydro-cracking reaction to obtain light fuel oil. The method of the invention adopts a method of grading the hydrogenation catalyst, can process the ethylene bottom oil light end and produce diesel oil having a high cetane number and a low condensation point and a naphtha having high arene, and is not obviously changed in a BMCI value of tail oil and a smoke point of a jet fuel when compared with the conditions before blending the ethylene bottom oil.

The invention discloses a cryoablation probe shell covered by expandable hydrogel and a preparation method thereof. The cryoablation probe shell is characterized by comprising a cryoablation probe shell made of metal and a hydrogel coating covering the probe shell, wherein the cryoablation probe shell comprises integrated working section and non-working section; the hydrogel coating is uniformly coated on the non-working section of the cryoablation probe shell, and the thickness of the hydrogel coating is 50 mu m to 500 mu m. The hydrogel coating comprises degradable porous hydrophilic hydrogel and absorbs water to rapidly expand to form a hydrogel isolating membrane to isolate the cryoablation probe from normal tissue, and plays the function of protecting the normal tissue of a non-target area.

The invention relates to a preparation method for a deicing, antiskid and denoising asphalt pavement material. The method is characterized by comprising the following steps: 1) preparation of rubber modified asphalt with high viscosity and high elasticity; 2) preparation of an organic/inorganic ice inhibiting material; 3) selection of mineral aggregate gradation; 4) preparation of the deicing, antiskid and denoising asphalt pavement material, which is realized by preparing mineral aggregate, the rubber modified asphalt with high viscosity and high elasticity, the organic/inorganic ice inhibiting material and fibers according to a mass ratio of 100: 4.8-5.1: 1.05-2.1: 0.225-0.533, heating the rubber modified asphalt with high viscosity and high elasticity at a temperature of 165 to 175 DEGC, and mixing and stirring the mineral aggregate, the rubber modified asphalt with high viscosity and high elasticity, the organic/inorganic ice inhibiting material and the fibers at a temperature of180 to 190 DEG C for 60 to 90 s, with paving temperature being 165 to 180 DEG C, so as to obtain the deicing, antiskid and denoising asphalt pavement material. The asphalt pavement material prepared by using the method has the characteristics of ice removal, skid resistance and noise reduction.

The invention provides a method for preparing a diesel oil component or jet fuel component by using animal and plant oil. The method comprises the following steps of: (1) dividing the animal and plant oil into at least two parts, introducing the at least two parts of animal and plant oil to a plurality of catalyst beds of a first hydrogenation reactor, and enabling the at least two parts of animal and plant oil and a hydrodeoxygenation catalyst to contact and react to obtain n-alkanes with the carbon number of 8-24; (2) filling an isomerization catalyst in a second hydrogenation reactor, introducing a reaction product obtained in the step (1) to the second hydrogenation reactor, and reducing a condensation point after isomerization reaction to obtain a diesel oil component; or, (3) filling a selective cracking catalyst in the second hydrogenation reactor, introducing the reaction product obtained in the step (1) to the second hydrogenation reactor, and then, carrying out selective hydrocracking and isomerization to obtain a jet fuel blending component. The method provided by the invention is high in jet fuel yield; and the prepared jet fuel blending component is good in quality and can be mixed with the traditional petroleum-based jet fuel according to any proportion so as to be an excellent blending component.

The invention relates to a non-aqueous coolant for an engine, which is characterized by comprising the following components in percent by weight: 10-80 percent of ethylene glycol, 10-80 percent of propylene glycol, 5-20 percent of polyol, 0.1-0.8 percent of phosphate-molybdate, 0.2-0.9 percent of silicate ester, 0.1-1 percent of 4-methyl 1H-benzotriazole, 0.2-0.8 percent of citric acid, 0.2-1 percent of sebacic acid, 0.1-1 percent of octanoic acid, 0.4-1.2 percent of citrate and 0.01-0.2 percent of cosolvent. The non-aqueous coolant has freezing point of -30--50 DEG C and boiling point of 130-150 DEG C, and ensures that the cold start of the engine is realized in cold weather; meanwhile, the working temperature of the engine is improved to 95-150 DEG C from the original 85-95 DEG C. The non-aqueous coolant belongs to a non-aqueous system, avoids electrochemical corrosion, and is a buffer system with pH of 7.5-9.5; and the added relevant auxiliaries have active corrosion resistance on aluminum and aluminum alloy and copper.

The invention discloses a coal flotation agent. The coal flotation agent is prepared from the following materials in parts by weight: 100 parts of oil-containing sludge, 100-400 parts of water, 0.25-1.5 parts of emulsifying agent, 0.1-5 parts of viscosity reducer and 0-5 parts of foaming agent. Besides, the invention further discloses a preparation method of the coal flotation agent. The coal flotation agent disclosed by the invention adopts the oil-containing sludge as the materials, and is added with the emulsifying agent, the viscosity reducer, the foaming agent and water. The produced coal flotation agent is an emulsion type coal flotation agent, so that the flotation agent is easy to disperse in a water phase during a coal flotation process, and therefore, the collection efficiency is improved. The condensation point of the oil-containing sludge is higher, and the added pour point reducer can be used for lowering the condensation point of the oil-containing sludge, so that the oil-containing sludge is improved in mobility and convenient to disperse; besides a foaming effect and a foam stabilizing effect, the added foaming agent can be used for achieving the effect of a cosurfactant during a process of preparing the emulsion type coal flotation agent, and can be cooperated with the emulsifying agent to stabilize the emulsion; and the added water can be used for improving the proportion of a continuous phase, and therefore, the coal flotation agent is beneficial to preparing oil-in-water emulsion.

The present invention relates to a system for producing diesel of high quality and method thereof. The system comprises an extraction unit. The system is characterized in that the top of the extraction unit is connected with a raffinate-oil washing tower via pipes, the top of the raffinate-oil washing tower is connected with a hydrogenation reaction system via pipes, products are extracted from the bottom of the hydrogenation reaction system via pipes, the bottom of the extraction unit is connected with a return washing tower via pipes, the top of the return washing tower is connected with an extract-oil washing tower via pipes, the bottom of the return washing tower is connected with a recovery tower, the top of the extract-oil washing tower is connected with a extract-oil cutting tower via pipes, the top of the extract-oil cutting tower is connected respectively with the bottom of the extraction unit and connected with the bottom of the return tower via pipes, light aromatic hydrocarbon products are directly extracted out from the side lines of the extract-oil cutting tower via pipes, heavy aromatic hydrocarbon products are directly extracted out from the bottom of the extract-oil cutting tower via pipes, the top of the recovery tower is connected respectively with the bottom of the extraction unit and the bottom of the return tower, and the bottom of the recovery tower is connected with the top of the extraction unit via pipes. The hydrogenation unit is only applied to raffinate oil and extract oil with special requirements, so that the scale is small and the cost is low. Moreover, the diversification of raw materials processed by the system is obvious. Not only can straight-run diesel oil can be processed, but also the catalyzed diesel oil and the coking diesel oil can be processed. In addition, the invention separates aromatic hydrocarbon from diesel oil, therefore the cetane number of the diesel oil is improved greatly.

Hydrogenation of low-set point and high-cetyl value diesel oil is carried out by contacting raw material oil with hydrogen and hydrogenation refined catalyst in the first reactive area, entering reactant into the second reactive area to contact with hydrogenation modified catalyst, cooling, separating, returning the hydrogen-enriched gas separated into reactor to reuse, and entering the liquid product into fractional system. It has higher recovery rate, more cetyl of diesel oil and lower set point.

The invention relates to an environment-friendly snow melting agent and a preparation method of the snow melting agent, and belongs to the field of the snow melting agents. The snow melting agent is prepared from acetates and chlorine salts with low corrosivity as the main raw materials by mixing acetates including potassium acetate, magnesium acetate and calcium acetate with calcium chloride and magnesium chloride in a certain proportion, as well as a small quantity of corrosion inhibitor. The common fault that a common inorganic snow melting agent is high in corrosivity is effectively overcome, the cost is reduced, and therefore the snow melting agent is suitable for promotion and application.

A carrier of hydrocatalyst for the hydrocracking of heavy oil, hydromodifying of poor diesel oil, etc is prepared from amorphour silicon aluminium, modified beta-molecular sieve and aluminium oxide. Its preparing process is also disclosed. Said catalyst has high catalytic activity.

The diesel oil fraction upgrading and pour point reducing process has the mixture of diesel oil material and hydrogen passing through the hydroupgrading reaction region to result in diesel oil with low solidification point through reaction under certain condition. The catalyst in the hydroupgrading reaction region includes at least one kind of bulk phase catalyst comprising complex oxide NixWyOz and oxide MoO3 in the weight ratio 0.1-10 and accounting for 40-100 wt% of total catalyst, and at least one kind of upgrading catalyst containing beta-zeolite. The present invention can lower the solidification point, 95 vol% point temperature and sulfur content of diesel oil, and raise cetane number and oxidation stability under mild condition.

The invention discloses a method for producing chemical raw material and diesel oil by Fischer-Tropsch synthetic wax and the method is that the Fischer-Tropsch synthetic wax and hydrogen gas contact with hydrogen cracking catalyst under hydrogen cracking condition and then the reaction products are treated by fractionation; diesel distillate obtained is the clean diesel with a low freezing point, while the naphtha cut obtained is high-quality raw material used for cracking of steam to ethane, and distillation range is higher than the hydrogen cracking of tail oil circulation of the diesel oil, wherein, the hydrogen cracking catalyst is the hydrogen cracking catalyst containing Beta zeolite and the weight content of the Beta zeolite in the catalyst is 0.5 percent to 60 percent; the Beta zeolite has properties that SiO2/Al2O3 molar ratio is 20 to 150 and Na2O less than or equal to 0.2w percent. The method of the invention can prepare the Fischer-Tropsch synthetic wax into the clean diesel oil with a low freezing point and high-quality raw material used for producing ethylene by steam cracking.