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30results about How to "Increase the number of operations" patented technology

Method for purifying aluminum oxide

The invention discloses a production process for preparing high-purity aluminum oxide by utilizing melt crystallization, and the production process comprises the following steps: introducing frozen saline water into the bottom of an outer jacket of a melting crystallizer, enabling the frozen saline water to uniformly flow on the outer wall of the crystallizer in the form of a falling film; addinga rough aluminum oxide solution into the melting crystallizer, flowing down the aluminum oxide solution on the inner wall of the crystallizer in the form of the falling film, cooling step by step to crystallize, growing out a uniform crystal layer on a heat exchange surface step by step, enabling concentration of the crystal layer to be higher than that of a mixture solution, enriching impuritiesinto the mixture solution step by step; regulating the hot water temperature through a heat exchanger for performing partial melting operation on the crystal layer, enabling low-melting-point impurities in the crystal layer to partly melt and remove, thereby further purifying the crystal. According to the method disclosed by the invention, the process is simple, the equipment structure is compact,the falling film form is adopted, energy is reduced, cost and equipment investment are reduced; and a product produced by the melting crystallizer is high in purity.
Owner:NANTONG DISONG TEXTILE CO LTD

Method for purifying sorbic acid

The invention discloses a production technology for preparing high-purity sorbic acid by utilizing melt crystallization. The production technology comprises the following steps: firstly, filling frozen saline water into the bottom of an outer jacket of a melt crystallizer, wherein the frozen saline water evenly flows in a falling film manner on the outer wall of the crystallizer; after that, putting a coarse sorbic acid solution into the melt crystallizer, wherein the sorbic acid solution flows down in a falling film manner on the inner wall of the crystallizer so as to be gradually cooled and further crystallized; enabling a uniform crystal layer to gradually grow on the heat exchange surface, wherein the concentration of the crystal layer is higher than that of a mixture solution, and gradually enabling impurities to be enriched in the mixture solution; then, adjusting the temperature of hot water by using a heat exchanger, carrying out partial melting operation on the crystal layer so as to melt and remove low-melting-point impurities mixed in the crystal layer, and further purifying crystal. The method is simple in technology and compact in equipment structure, adopts a falling film form so as to reduce energy, and can reduce cost and equipment investment; the product produced by using the melt crystallizer is high in purity.
Owner:南通中兴多元复合钢管有限公司

Method for purifying sorbic acid

The invention discloses a production technology for preparing high-purity sorbic acid by melt crystallization. The production technology comprises the following steps of firstly, sending freezing salt water into the bottom part of an outer jacket of a melt crystallization device, enabling the freezing salt water to uniformly flow along the outer wall of the crystallization device in a falling film way, feeding a crude sorbic acid solution into the melt crystallization device, enabling the sorbic acid solution to flow down along the inner wall of the crystallization device in the falling film way, gradually cooling and crystallizing, gradually growing a uniform crystal layer on the heat exchange surface, enabling the concentration of the crystal layer to be higher than the concentration of mixture solution, and enabling impurities to gradually enrich into the mixture solution; then, melting one part of crystal layer by adjusting the hot water temperature through a heat exchanger, and melting and removing the impurities with low melting point in the crystal layer, so as to further purify crystals. The production technology has the advantages that the method and technology are simple, the equipment structure is compact, the falling film type is adopted, the energy is decreased, and the cost and equipment investment are reduced at same time; the purity of a product produced by the melt crystallization device is high.
Owner:于银强

Method for purifying dehydroacetic acid

The invention discloses a production process for preparing high purity dehydroacetic acid by virtue of melt crystallization. The process comprises the following steps of: firstly introducing frozen saline water into the bottom of an outer jacket of a melting crystallizer, wherein the frozen saline water uniformly flows in a falling film manner on the outer wall of the crystallizer; then inputting a concentrated dehydroacetic acid solution into the melting crystallizer, wherein the dehydroacetic acid solution flows in a falling film manner on the inner wall of the crystallizer and is gradually cooled to be crystallized; gradually growing a uniform crystal layer on a heat exchange face, wherein the concentration of the crystal layer is higher than that of a mixed solution, and impurities are gradually enriched in the mixture solution; and then adjusting the temperature of hot water by virtue of a heat exchanger to partly melt the crystal layer, namely a sweating operation, wherein low-melting-point impurities mingled in the crystal layer are partly melted and removed, so that the crystal is further purified. The process disclosed by the invention is simple, the equipment is compact in structure, and the energy is reduced in form of the falling film, and meanwhile, the cost and equipment investment are lowered; a product produced by the melting crystallizer is high in purity.
Owner:张勇

A method for purifying dehydroacetic acid

The invention discloses a production process for preparing high-purity dehydroacetic acid by virtue of a melt crystallizer. The production process comprises the following steps: introducing freezing saline water into the bottom of a jacket of the melt crystallizer, enabling the freezing saline water to uniformly flow at the outer wall of the crystallizer in a falling film manner, putting a condensed dehydroacetic acid solution into the melt crystallizer, enabling the condensed dehydroacetic acid solution to flow down at the inner wall of the crystallizer in the falling film manner so as to be gradually cooled and crystallized, gradually growing a uniform crystal layer on a heat exchanging face, and gradually enriching impurities in a mixture solution, wherein the concentration of the uniform crystal layer is higher than that of the mixture solution; regulating the temperature of hot water by utilizing a heat exchanger to carry out partial melting operation, namely a sweating process, on the crystal layer, and partially melting and eliminating low-melting-point impurities included in the crystal layer, so as to further purify crystals. The production process has the advantages that the process is simple, and the structures of devices are compact; by utilizing the falling film manner, the energy is reduced, and meanwhile, the cost and the equipment investment are lowered; the purities of products produced by utilizing the melt crystallizer are high.
Owner:NANTONG ALCHEMY BIOTECH DEV

Load balancing method for prolonging service life of hotspot region

The invention discloses a load balancing method for prolonging the service life of a hot spot region, and relates to responding to an access request of a user to a hot spot region in a FLASH memory. The method comprises: according to a load balancing section global variable of current operation, operating the corresponding load balancing section, judging effectiveness of the current load balancingsection and correctness of read-write operation before the operation, completing read-write operation of the hot spot region, and updating the global variable and management information of the load balancing section of the current operation at the same time to prepare for the next read-write operation of the load balancing section. According to the method introduced in the invention, a pure software method can be used, the number of load balancing sections of the FLASH memory is configured, the read-write operation load of the hot spot region of the FLASH memory is dynamically balanced, the service life of the hot spot region is prolonged, the overall reliability of the FLASH is improved, the requirements of different users for the reliability of the FLASH memory, especially the bottleneck of the service life of the hot spot region are met, and the development efficiency is improved.
Owner:BEIJING CEC HUADA ELECTRONIC DESIGN CO LTD

A kind of method of purifying sorbic acid

The invention discloses a production process for preparing high-purity sorbic acid by virtue of a melt crystallizer. The production process comprises the following steps: introducing freezing saline water into the bottom of a jacket of the melt crystallizer, enabling the freezing saline water to uniformly flow at the outer wall of the crystallizer in a falling film manner, putting a coarse sorbic acid solution into the melt crystallizer, enabling the coarse sorbic acid solution to flow down manner at the inner wall of the crystallizer in the falling film so as to be gradually cooled and crystallized, gradually growing a uniform crystal layer on a heat exchanging face, and gradually enriching impurities in a mixture solution, wherein the concentration of the uniform crystal layer is higher than that of the mixture solution; regulating the temperature of hot water by utilizing a heat exchanger to carry out partial melting operation, and partially melting and eliminating low-melting-point impurities included in the crystal layer, so as to further purify crystals. The method has the advantages that the process is simple, and the structures of devices are compact; by utilizing the falling film manner, the energy is reduced, and meanwhile, the cost and the equipment investment are lowered; the purities of products produced by utilizing the melt crystallizer are high.
Owner:NANTONG ALCHEMY BIOTECH DEV
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