1628results about How to "Reduce acidity" patented technology

An acidic amorphous silica-amumina has a large specific surface area and a large pore volume. A carrier complex and a hydrotreating catalyst containing acidic amorphous silica-alumina, in particular a hydrocracking catalyst containing acidic amorphous silica-alumina in combination with a modified zeolite-Y, treats petroleum hydrocarbon materials to produce middle distillates. The amorphous silica-alumina has a SiO2 content of 10-50 wt. %, a specific surface area of 300-600 m2/g, a pore volume of 0.8-1.5 ml/g and an IR acidity of 0.25-0.60 mmol/g. The catalyst shows a relatively high activity and mid-distillate selectivity and can be particularly used in hydrocracking process for producing mid-distillates with a higher yield.

The invention relates to a Y-zeolite containing anti-nitrogen-type hydrocracking catalyst, selecting proper Y-zeolite to assort with special acidic unformed sial, to make the catalyst have higher activity and medium-oil selectivity, able to directly process high-nitrogen content raw material without prerefining segment, and able to meet cracking active requirement of full circulation. It is applied to maximumly producing the clean fuel.

Described herein are compositions and methods for using metal oxides to upgrade oil. Metal oxides may be used as catalysts to reduce the TAN of the oil by converting carboxylic acids such as naphthenic acids into non-corrosive products. In some cases, the conversion occurs by a decarboxylation of the carboxylic acid to produce CO₂. A second process promoted by metal oxides is hydrocarbon cracking. Cracking decreases the viscosity and increases the API, and produces lower molecular-weight hydrocarbons that are useful for many fuels and lubricants. Reductions in TAN and the increases in API improve the quality of increase the value of oil.

A microclimate management sheet, for placing against a person's body, includes a flexible generally fluid impermeable first layer, a flexible generally fluid impermeable second layer with a gas permeable region for facing a patient's body. The first layer is joined with the second layer in a manner to form a chamber between the first layer and the second layer. An inlet operative to be in fluid communication with a supply of gas and in fluid communication with the chamber is provided for delivering a gas to the chamber, with the gas permeable region for directing the gas the patient's body.

The present invention is method of raising solid content in catalytic cracking catalyst slurry. The method includes mixing clay, molecular sieve slurry, aluminum-containing binder, pseudo boehmite and inorganic acid to form catalyst slurry and the subsequent spray drying. It features that the addition of inorganic acid before adding pseudo boehmite and the molecular sieve, and the addition of inorganic acid after adding kaolin and aluminum-containing binder or into the aluminum-containing binder. The present invention can raise the solid content in catalyst slurry to over 40 % to short the colloid forming time greatly, raise the catalyst producing efficiency and lower catalyst producing cost while ensuring the wear strength of catalyst. At the same time, the catalyst has great pore volume, high micro reaction activity and improved comprehensive reaction performance.

A pattern forming method includes (a) a step of forming a resist film on a substrate, (b) a pre-wet step of spreading a pre-wet solution on the resist film and after a fixed time, removing the pre-wet solution, and (c) a step of subjecting the resist film on the substrate to exposure through an immersion liquid.

The main theme of the invention is to provide a method for manufacturing industrially, by mechanically comminuting silk yarn, crystalline silk fibroin powder below 3 mum in an average particle diameter, which can be used for various applications. A silk substance such as cocoon filament, silk yarn, or raw silk is brought into an alkali aqueous solution under a pressure of 1 through 5 atmospheric pressure at temperatures from 100° C. through 150° C. to reduce the tensile strength of the silk substance to around 0.02 g/d or less. Thereafter, the resultant silk substance is subjected to dealkalization and drying. Subsequently, the resultant dried silk substance is comminuted into powder below 3 mum in an average particle diameter. Thus, the crystalline silk fibroin powder below 3 mum in an average particle diameter is manufactured.

A macroreticular alumina carrier contains alumina and halogen and is prepared through mixing hydrated aluminium oxide with pore enlarging agent, shaping and calcining at 600-850 deg.C

The object of the present invention is the oral administration of animal immunoglobulins for the treatment of gastrointestinal disorders caused by bacterial and/or yeast overgrowth. Immunoglobulins derived from the blood, plasma or serum of animals, such as cow, goats, sheep and pigs, contain a broad spectrum of antibodies to bacteria and yeast that afflict the gastrointestinal tract of human patients.

A hydrocracking catalyst having a support of a composite of mesoporous materials, molecular sieves and alumina, is used in the last bed of a multi-bed system for treating heavy crude oils and residues and is designed to increase the production of intermediate distillates having boiling points in a temperature range of 204° C. to 538° C., decrease the production of the heavy fraction (>538° C.), and increase the production of gasoline fraction (<204° C.). The feedstock to be processed in the last bed contains low amounts of metals and is lighter than the feedstock that is fed to the first catalytic bed.

The invention discloses a production method of a fermented green plum fruit wine and a product thereof. The production method comprises the following steps: picking, cleaning and smashing on fresh green plum fruit utilized as a raw material, adding pectinase and cellulase to perform enzymolysis at 15-18 DEG C, then adding potassium tartrate to adjust and reduce the acidity at minus 6 DEG C to minus 8 DEG C, and using anion exchange resin to perform adsorption and reduce the acidity to 15g/L which is favorable for fermentation; placing clear juice in a fermentation tank, adding Saccharomyces cerevisiae to perform low-temperature fermentation; and adding bentonite and tannin in the fermented wine solution to perform compound purification, then performing low temperature freezing and clarification, blending, removing bacteria and filtering. The method has the advantages of good acidity-reducing effect and high composite enzymolysis juice yield; and by adopting the composite purification and freezing, the stability of the wine can be enhanced. The method is suitable for the production of the fermented green plum fruit wine.

The invention discloses a method for pre-treating phosphorite of wet process phosphoric acid by using acidic waste water in the production process of titanium pigment, which comprises the following steps: (1), collecting the acidic waste water into an acidic waste water storage groove, controlling the acid degree to be 2 to 5 percent and the total iron concentration to be 0.3 to 0.5 percent; (2), adding the acidic waste water and the milled phosphorite in a solid-to-liquid ratio of 2-5:1 into a reaction groove for reaction; and (3), performing solid-liquid separation on the slurry which is obtained in the step (2) to obtain a solid phase, namely the required phosphorite. The content of magnesium in the phosphorite which is treated by the method is reduced by over 70 percent, the loss ratio of the phosphorus is controlled to be within 1 percent; when the phosphorite which is treated by the process is used for producing the phosphoric acid by a wet method, the consumption of the sulfuric acid for mine per ton is reduced by about 10 percent; and the acidic waste water pretreats phosphorite and then is delivered to a sewage station for treatment, the consumption of lime or other alkaline substance is reduced by 60 percent compared with the mode of directly delivering the waste water to the sewage station, so the economical efficiency of the process is high.

Provided are methods for the preparation and purification of alkyl tetrahalophthalate esters by the reaction of a tetrahalophthalic compound with an alkanol in the presence of a titanate catalyst. More particularly, improved methods are provided for making and recovering an ester with little contamination by catalytic metal components and color bodies, and with little acidity, in a high yield from the esterification reaction by pretreating the starting materials to reduce the acidity thereof, reacting the starting materials in the presence of a titanate catalyst, stripping excess alcohol, hydrolyzing the catalyst, and filtering out solids to yield a high purity tetrahalophthalate ester product.

The polyphosphoric cyanuric salt modified by metal ion comprises, oxygen 21~25wt%, carbon 15~18%, hydrogen 1~3%, phosphor 13~16%, nitrogen 37~42%, and metal ion 0.2~6%. The opposite preparation method comprises: dissolving or dispersing the metal hydroxides, oxide or carbonate into phosphoric acid solution with concentration as 80~90%; adding water, phosphoric acid solution with dihydric phosphate and melamine into kettle to react for two hours; heating the modified polyphosphoric cyanuric salt to 260~330Deg and taking polymerisation for 8~12h. The product has better thermallysis stability and flame retardant property to nylon. This method is simple, and has on-pollutant andhigh yield rate.

The invention relates to anthony pig feed, which is prepared mainly by strictly controlling the quality of corns and adding a large amount of lactose, whey powder, fermented soybean meal, soya protein concentrate, plasma protein powder, fish meal, complex enzyme preparation, digestion acid, microbial agent and the like. The anthony pig feed obtained has a crude protein content of more than or equal to 18.6 percent, lysine content of more than or equal to 1.31 percent, digestible energy of more than or equal to 3,500Kcal/kg, an energy to protein ratio (Kcal/percent) of more than or equal to 188, a calcium content of more than or equal to 0.6 percent, a phosphorus content of more than or equal to 0.49 percent, a calcium to phosphorus ratio of more than or equal to 1.2:1 and a dietary electrolyte balance value (DEB) of more than or equal to 195 as well as high palatability, high digestibility and availability and low acid-binding capacity and can effectively regulate intestinal flora balance.