52results about How to "Short hydrolysis time" patented technology

This invention provides one hydrolysis method to synthesize lithium alkyl, which comprises the following steps: containing the lithium powder filtered by lithium alkyl into its buffer tar; then pressing the lithium powder into hydrolysis tar through lithium powder metering pump to react with large amount of water under temperature of sixty degrees to control lithium powder quantative through hydrolysis temperature; the reaction temperature can be taken away by cooling water and thehydrocarbon solvent sent out are recycled by air condensation device. The method can prevent super heat without large range wave to realize the industry automatic control.

The invention provides a hydrolytic agent for treating wastewater containing tetrafluoroborate and application thereof. The hydrolytic agent consists of at least one aluminum salt and at least one water-soluble cerate. The aluminum salt is selected from alum, aluminum chloride or hydrate of the aluminum chloride, aluminum sulfate or hydrate of the aluminum sulfate, and preferable the alum; and the water-soluble cerat is selected from cerium nitrate, cerous sulfate and cerium chloride, and the preferable the cerium chloride. The hydrolytic agent disclosed by the invention is used for treating the wastewater containing tetrafluoroborate, thus the consumption of the aluminum salt contained in the hydrolytic agent can be reduced on the one hand and the concentration of the tetrafluoroborate in the hydrated wastewater can be reduced on the other hand, which provide advantages for subsequent treatment. After the wastewater is continuously precipitated by lime milk or CaOH2, the concentration of the tetrafluoroborate and the concentration of fluorinion are respectively reduced and reach the discharge stand, and thus the etrafluoroborate and the fluorinion can be directly discharged and further the subsequent treatment flow is shortened.

The invention relates to a method for synthesizing glyoxylic acid by means of ozonizing maleic anhydride and mixed solvents, and belongs to the field of technologies for preparing glyoxylic acid. The method for synthesizing the glyoxylic acid by means of ozonizing the maleic anhydride and the mixed solvents is low in cost. The method includes steps of carrying out hydrolysis, ozone oxidation, reduction, reduced-pressure distillation, crystallization and the like on the inexpensive maleic anhydride in the mixed solvents to ultimately obtain glyoxylic acid solid. The method has the advantages that the glyoxylic acid solid with high purity can be directly obtained by the aid of the method, and products are high in quality and wide in application; the method is easy to implement and high in glyoxylic acid yield, the maleic anhydride can be converted into the glyoxylic acid at a low price, the method can be used for industrial large-scale production, and certain contribution can be made for solving the problem of situation of excessive maleic anhydride; optimization of the traditional processes for producing the glyoxylic acid and elimination of backward processes can be stimulated, environment-friendly oxidizing agents are adopted, and accordingly huge contribution can be made for environmental protection.

The invention relates to a method for preparing trans-resveratrol by hydrolyzing trans-polydatin, solving the problems that the prior enzyme process needs longer treatment time and has a very low convThe invention relates to a method for preparing trans-resveratrol by hydrolyzing trans-polydatin, solving the problems that the prior enzyme process needs longer treatment time and has a very low conversion rate by the simple acid hydrolysis of the trans-polydatin. The hydrolysis conversion system comprises the ingredients of trans-polydatin with the purity of 90 percent, methanol and hydrochloricersion rate by the simple acid hydrolysis of the trans-polydatin. The hydrolysis conversion system comprises the ingredients of trans-polydatin with the purity of 90 percent, methanol and hydrochloric acid solution with the purity of 12 percent which are in a ratio of 4 to 2 to 2; the trans-polydatin with the purity of 90 percent is fully dissolved into the methanol, and the hydrochloric acid soluacid solution with the purity of 12 percent which are in a ratio of 4 to 2 to 2; the trans-polydatin with the purity of 90 percent is fully dissolved into the methanol, and the hydrochloric acid solution with the purity of 12 percent is added to carry out a hydrolysis reaction for 1 hour to 3 hours at a temperature of 55 DEG C to 75 DEG C; a scraped matter is obtained by the hydrolysis system afttion with the purity of 12 percent is added to carry out a hydrolysis reaction for 1 hour to 3 hours at a temperature of 55 DEG C to 75 DEG C; a scraped matter is obtained by the hydrolysis system after the thin layer chromatography of a silica gel plate, dissolved in 3ml of methanol, ultrasonically cleaned, shaken and separated, and supernatant fluid is frozen to obtain the white powdered trans-rer the thin layer chromatography of a silica gel plate, dissolved in 3ml of methanol, ultrasonically cleaned, shaken and separated, and supernatant fluid is frozen to obtain the white powdered trans-resveratrol. Compared with the prior art, the method has high conversion rate of 45 percent, short hydrolysis time of 1 hour to 3 hours and simple operation and can recycle the methanol, thereby havingesveratrol. Compared with the prior art, the method has high conversion rate of 45 percent, short hydrolysis time of 1 hour to 3 hours and simple operation and can recycle the methanol, thereby havinglow production cost and being easy to realize industrialized production. low production cost and being easy to realize industrialized production.