228results about How to "Reduce acid content" patented technology

The invention discloses a dehydrogenation catalyst and a preparation method and application thereof. The dehydrogenation catalyst uses ammonia processed alumina as a carrier, chrome as an active component, and one or a plurality of potassium, manganese, cobalt, iron, nickel, copper and zinc as an additive, the additive is loaded onto the carrier by a co-impregnation method, and taking oxide weight content in the final catalyst as a reference, the catalyst comprises 2%-6% of chromium oxide, and 0.1-5% of the additive. The preparation method of the hydrocarbon dehydrogenation catalyst comprises the following processes: using ammonia to preprocess an alumina carrier, using the co-impregnation method to load one or a plurality of potassium, manganese, cobalt, iron, nickel, copper and zinc, and loading the active component chrome. The dehydrogenation catalyst can be used in dehydrogenation of propane for preparation of propylene. The low carbon alkane dehydrogenation catalyst prepared by the preparation method has the advantages of low active component chromium oxide content, good propylene selectivity, high activity and the like.

A composition and method for acidizing a formation in the presence of ferric ion, free sulfur and/or sulfides is disclosed. The composition employs a ferric ion reducing agent and a sulfide reactant separately or in combination. The ferric ion reducing agent is a thioalkyl acid. The sulfide reactant compounds include alpha-diketones and saturated and alpha-unsaturated cyclic ketones. In another aspect, the reducing activity of the thioalkyl acid is accelerated by the presence of a catalytic quantity of a compound or mixture of compounds which yield in acid solution cuprous ion, cupric ion or combinations thereof with iodide ion.

The present invention provides an organic phase composition comprising:

• • (a) a first solvent (S1) characterized by a water solubility of less than 10% and by at least one of (a1) having a polarity related component of Hoy's cohesion parameter (delta-P) between 5 and 10 MPa^1/2 and (b1) having a Hydrogen bonding related component of Hoy's cohesion parameter (delta-H) between 5 and 20 MPa^1/2;
  • (b) a second solvent (S2) characterized by a water solubility of at least 30% and by at least one of (a2) having a delta-P greater than 8 MPa^1/2 and (b2) having a delta-H greater than 12 MPa^1/2;
  • (c) water;
  • (d) HCl; and
  • (e) a carbohydrate.

An electroconductive polymer solution contains electroconductive high molecules and polyanion. Under 25 DEG C, the oxygen content in the electroconductive polymer solution is below 8 weight ppm. An electroconductive coating film using the solution has high transmittance and low resistance. Applied to a solid electrolytic capacitor, the electroconductive polymer solution can improve the conductivity of solid electrolysis and filling behavior, therefore, a solid electrolytic capacitor with low ESR and other excellent properties is obtained.

A container comprises a container body defining a top opening, a sealing surface being defined on the container body encircling the top opening, and a closure sealed to the sealing surface by a heat-seal material comprising a blend of two different acidic ionomers having respectively higher and lower acid content such that the heat-seal material has an acid content intermediate between that of the two different ionomers, whereby the resulting heat seal strikes a balance between oil-resistance and age-up.

The invention relates to a method for deacidification of an alkylation reaction product. In the method, after being subject to gravity settling, mixed emulsified liquid of the alkylation reaction product (hydrocarbon oil) and sulfuric acid passes through a component with hydrophobic modified ceramic membrane at a membrane surface speed of 0.01-5m/s for separation, and the deacidification of oil is achieved in a cross current filtration mode under the operation pressure of 0.01-0.3MPa and at the operation temperature of 0-40 DEG C. Under the push of pressure, the oil passes through the ceramic membrane, acid in the oil is trapped, and the acid content in the obtained oil is lower than 100ppm, thereby greatly reducing alkaline usage and waste water generation amount in an acid-base refine system of an alkylation technology and reducing the use of electrostatic precipitation; and the ceramic membrane surface is subject to hydrophobic modification, thus the contact angle of water droplet on the membrane surface is 70 degrees-16 degrees. The method is suitable for removal of polar liquid in various oils, has the advantages of simple process, low energy consumption, high separation precision, no environment pollution and high economic and practical value, and is easy to achieve industrial application.

The invention discloses an organic and inorganic biological compound fertilizer and a preparation method. The organic and inorganic biological compound fertilizer consists of a nitrogen fertilizer, a phosphatic fertilizer, a potassic fertilizer, chicken manure and vinasse fermented fertilizer, an adsorbent, an enveloping agent and a bioremediating inoculant. Organic matters, inorganic nutrition and functional microorganisms are processed and mixed according to own different functional effects through specific equipment and a technology; after being applied, the three fertilizers jointly generate action and cannot influence the effect; the synergism and the effect improving effect of the biological fertilizer, the stable and long-time effect of the inorganic fertilizer and the quick-acting effect of the inorganic fertilizer are combined with one another; and the organic and inorganic biological compound fertilizer has the characteristics of urgent and delayed supplementation, advantage complementation, comprehensive nutrition, durable balance, high efficiency and the like. The same-fertilizer-price comprehensive experiment result shows that the yield of food crops is increased by 9-14 percent when being compared with the common compound fertilizer; the yield of economical crops is increased by 12-30 percent.

The invention discloses an on-tree refreshing method of citrus gonggan, and the method comprises the following steps: spraying and applying a preservation solution once in the first third of November; and spraying and applying a disinfectant once every 15-30 days. By adopting the processing method, the reduction in the content of total acid in citrus gonggan fruits and the content of vitamin C in fruit juice can be effectively stayed, and the occurrence time of enabling the content of soluble solids and the content of total sugar to achieve the highest values can be delayed, thereby being conductive to on-tree refreshing of the citrus gonggan fruits, delaying aging of the citrus gonggan fruits, prolonging the fruit maturation period and improving the fruit quality.

A process for reducing the naphthenic acidity of petroleum oils or their fractions is described, said process comprising providing a hydrocarbon feed 103/203/303 having between 0.1 and 99 wt % of emulsified/dispersed water in oil, said feed containing salts and a content of naphthenic acids measured as TAN between 0.1 and 10 mg KOH/g oil; directing the said petroleum oil feed and emulsified/dispersed water towards an energy emitter device in the microwave range and submitting said feed 103/203/303 in liquid phase, under pressure between 0.7 and 4.5 MPa at temperatures between 50° C. and 350° C. to the microwave radiation, applied in the range of 1 mm to 30 cm to said feed so that the presence of salts, the applied temperature and the high dielectric constant of the water droplets make that the heat is absorbed on the spot by the water and heat said water preferentially to the oil, while the naphthenic compounds at the interface between the droplets and the oil catch said heat; effecting the decomposition of the carboxylic acids responsible for the naphthenic acidity in the petroleum feed at temperatures around 320° C. and generating CO₂; separating with the aid of any known device 106/106′/112/117/208/208′/214/219/310/310′/316/321 any gas phase generated, water and oil; and recovering the hydrocarbon oil stream 108/113/119/210/215/221/312/317/323 having a reduced content in naphthenic acids. The process is designed to be applied to the reduction of naphthenic acids in feeds of petroleum oils and their fractions in the oil production step, in refineries or any industrial installation.

This invention relates to a method for extracting nickel sulfate from waste copper electrolyte. The method comprises: (1) removing copper from waste copper electrolyte discharged from the electrobath so that the Cu2+ content is less than or equal to 0.1 g/L; (2) adding the waste electrolyte into a reaction tank (70-80 vol.% of the tank), stirring at 20-25 rpm, introducing 0.1-0.3 MPa steam, and vacuumizing to 0.01-0.05 MPa; (3) ending heating and vacuumizing when the negative pressure in the tank reaches 0.05 MPa and the temperature reaches 120 deg.C, cooling to 60 deg.C and discharging the waste electrolyte; (4) standing, cooling to 30 deg.C, performing solid-liquid separation, discharging the upper layer, and dehydrating the sediment to obtain nickel sulfate crystal. The method has such advantages as safe operation, little pollution, high efficiency, high nickel sulfate recovery rate (98%), and stable product quality.

The present invention discloses a kind of active protein feed and its preparation process. The active protein feed is prepared with the materials comprising fresh solid fermented distiller's grains 96-98 wt%, urea 0.5-1 wt%, ammonium sulfate 1-3 wt% and koji tray strain 0.1-0.6 wt%, and the preparation process is simple, low in labor strength and low in cost. The said process can eliminate the pollution caused by distiller's grains while producing loose feed with special fragrance, rich protein, vitamins, amino acid, biotin mineral and nutritious elements essential for animal growth.

The invention discloses a preparation method for yogurt lump. The method comprises the steps of fermenting, acidization, curdling, whey discharging, water washing, storing, forming, sealing, after-ripening and packaging by adopting special lactic acid bacteria to inoculate milk or goat milk which is standardized and pasteurized. The invention can not only lead the traditional yogurt lump product to be safer and more sanitary with stable quality, subtle taste and modest hardness. And since the step of the after-ripening is controlled appropriately, the prepared yogurt lump is of fuller flavor with little cream precipitated, high yielding rate and can meet popular taste and be used for producing yogurt lump with different water content, tastes and textural quality, which has more market competitiveness and can greatly enrich the processing technology and flavor of traditional yogurt lump.

The invention relates to a preparation method of wolfberry pulp. The preparation method comprises the following steps: firstly, screening fresh wolfberries, cleaning and draining off to obtain clean wolfberries; secondly, mixing the clean wolfberries with vitamin C and citric acid, and pulping and grinding under a low-oxygen condition to obtain raw wolfberry pulp; thirdly, heating the raw wolfberry pulp, and separating the pulp and seeds to obtain primary wolfberry pulp; and fourthly, carrying out ultrafine grinding on the primary wolfberry pulp, degassing and sterilizing to obtain the wolfberry pulp. The wolfberry pulp is ultrafine-ground in a high-speed shearing mode, so that the sizes of ground wolfberry pulp can be reduced; the wolfberry pulp is heated before grinding to facilitate the dissolving of pectin in wolfberry pulp and improve the viscosity of the wolfberry pulp particles; besides, the serious layering phenomenon of the wolfberry pulp containing macromolecular substances polysaccharide, protein and the like can be avoided by operations of reducing the sizes of the ground wolfberry pulp and increasing the viscosity.

The invention relates to a comprehensive utilization method of a biomass raw material, and concretely relates to a method for comprehensively utilizing celluloses, hemicelluloses and lignin in the biomass raw material. The method is characterized in that the celluloses, lignin and the hemicelluloses can be respectively extracted by boiling the biomass raw material through a formic acid and acetic acid mixed organic acid under the catalysis action of hydrogen peroxide in order to obtain highly pure celluloses and lignin, the combined production of furfural and biochar is realized by utilizing a residual sugar solution, and the highly pure celluloses can be used in the textile industry.

The present invention relates to an artificial diamond synthetic material purification process, belonging to the field of diamond synthesis technology. It is characterized by using potassium chlorate and small quantity of hydrochloric acid to remove graphite and metal from after-refined material of shaker simultaneously.