46results about How to "Simple separability" patented technology

The invention discloses a reduction-oxidation graphene-Fe3O4 nano composite, a preparation method thereof, and an application of the reduction-oxidation graphene-Fe3O4 nano composite in absorbing bisphenol A. The reduction-oxidation graphene-Fe3O4 nano composite comprises Fe3O4 nano particles and reduction-oxidation graphene. The reduction-oxidation graphene-Fe3O4 nano composite and a solution containing the bisphenol A are in full contact in an ambient temperature, the bisphenol A is absorbed and removed. Compared with the prior art, the advantages of small material dose, simplicity in operation, mild processing condition, fast processing speed, and no harm for the environment, and recycling nano-composite materials, and the like are achieved.

The embodiment of the invention provides a disposable electronic moisture-sensitive diaper and a detachable reusable urination alarm device. The device comprises a diaper and an alarm. The diaper comprises an inner layer, an outer layer and a moisture-absorbing layer and further comprises an independent dry space. The dry space is accessed and available outside the diaper. The alarm is preferably arranged inside the space and exerts the urine-sensing and warning functions in the space. The embodiment of the invention further provides a disposable electronic moisture-sensitive diaper which comprises an inner layer, an outer layer and a moisture-absorbing layer and further comprises an independent dry space and an electrically-conducting induction wire positioned on the inner edge of the outer layer of the diaper and contacting the moisture-absorbing layer. The embodiment of the invention also provides a detachable reusable urination alarm device which comprises a contact electrode, an elastic clip, an input/output circuit, a processor and a wireless emitter. The diaper is discarded instantly after use and ensures the use convenience and hygiene. The alarm device is detachable from the diaper and can be used repeatedly, thereby reducing the use cost.

The invention relates to a method for preparing hydrogen and carbon disulfide, in particular to a method for preparing hydrogen and carbon disulfide by adopting hydrogen sulfide, which aims at solving the shortages existing in reaction (1) and reaction (4) and the problems of preparing hydrogen and carbon disulfide by combining the two reactions. The preparation method comprises the steps, hydrogen sulfide and coke are used as raw materials to generate hydrogen and carbonyl sulfide under the function of low-temperature transformation catalyst, carbonyl sulfide is separated by a cold solvent washing tower, hydrogen is separated by a hydrogen separation device, the obtained carbonyl sulfide is separated by a stripping tower or a rectifying tower so as to decompose the carbonyl sulfide into carbon dioxide and carbon disulfide under the function of low-temperature disproportionation catalyst, carbon disulfide is separated by a condenser so as to obtain carbon dioxide which is then adopted as gasification agent to prepare carbon monoxide. All reactions are carried out under low-temperature, which reduces the erosion of sulfide to equipment; the processes of the reactions and separation are simple and can be easily operated; the separated products can be used repeatedly, which reduces waste discharge and leads the industrial production to be possible.

The invention provides a DNA detection kit. The DNA detection kit comprises detection DNA labeled by a liposome-quantum dot compound, and trap DNA modified by magnetic beads. According to the liposome-quantum dot compound, a plurality of individual particle quantum dots are enveloped by liposome. The detection DNA is bonded onto the surface of the liposome via amido bonds. According to the trap DNA modified by magnetic beads, the trap DNA is bonded onto the surface of the magnetic beads via amido bonds. Sequence of the detection DNA and sequence of the trap DAN are respectively capable of realizing complementation with sequences of the two ends of a target DNA. Sensitivity of the DNA detection kit is high, and can reach 10 to 18mol/L. The DNA detection kit can be used for simultaneous detection of multi-component DNA. The invention also provides a preparation method and applications of the DNA detection kit.

The invention discloses an in-situ remediation system and remediation method for an organic pollution site of light non-aqueous phase liquids (LNAPLs). The in-situ remediation system comprises a soil eluting remediation system and a solar power supply system. The soil eluting remediation system comprises a medicine storage device, a medicine injecting device, an extracting device, an eluant separating device, a groundwater processing device and an eluant recycling device. The medicine storage device is connected with the medicine injecting device, the groundwater processing device and the eluant recycling device. The extracting device is connected with the eluant separating device. The eluant separating device is connected with the groundwater processing device and the eluant recycling device. The solar power supply system comprises a solar power supply battery set, a storage battery set, a solar controller and an inverter. The in-situ remediation system is small in energy consumption, low in cost, high in pollutant removal rate, good in extract separating effect and high in recycling efficiency of groundwater and eluant.

The invention discloses a preparation method of nano magnetic beads for purifying histidine tagged protein. The method comprises the following steps: taking sodium alginate, FeCl3.6H2O, NaAc.3H2O andPEG as raw materials, taking ethylene glycol and deionized water as solvent, reacting through a solvothermal method to generate monodispersed sodium alginate/Fe3O4 nano magnetic beads, subsequently further carrying out an epoxy chloropropane cross-linking reaction and activation on the nano magnetic beads and the newly added sodium alginate, then introducing an iminodiacetic acid (IDA) chelating agent so as to obtain water-stable nano magnetic beads efficiently chelated with metal nickel or cobalt ions; and efficient, rapid, simple and low-cost separation and purification of the histidine tagged protein are realized. The method disclosed by the invention is simple, rapid and stable to operate and low in cost; the synthesized nano magnetic beads are large in specific surface area and stablein a water phase and not prone to agglomeration and precipitation; the purification efficiency of the histidine tagged protein is greatly improved; and the large-batch industrial production of the nano magnetic beads can be realized.

PROBLEM TO BE SOLVED: To provide connection structure of a storage element capable of flowing large current, without mentioning the capability of improvement in the workability in connection of two or more elements, as well as the reduction in production cost.SOLUTION: The storage elements are connected each other by mutually abutting on countering end surfaces in the direction of an axis of inner side cylinders 41 and 51 of a male side electrical connection hook 22 and a female side electrical connection hook 32, and also by pressure-welding the circumference surface of an outside cylinder 42 of the male side electrical connection hook 22, and the inner circumference surface of an outside cylinder 52 of the female side electrical connection hook 32. In this way, the male side electrical connection hook 22 and the female side electrical connection hook 32 can be detached and attached with a single touch. A current path is formed between the end sides mutually abutted by the inner side cylinders 41 and 51 of the male side electrical connection hook 22 and the female side electrical connection hook 32, and furthermore a current path is formed between the circumference surface of the outside cylinder 42 of the male side electrical connection hook 22 and the inner circumference surface of the outside cylinder 52 of the female terminal.

The invention relates to separator and measuring method for measuring water content of oil well. The measuring method is: (1) the liquid needed to be measured is poured into the separator, shuts off the balancing valve, and the liquid level of the separator is decreased to the lowest; (2) opens the balance valve, the liquid level upgrades, when the liquid level upgrades to the upper limit a of the oil glass tube, records the lifting height of the second liquidometer, and pours the liquid out of the separator; (3) pours liquid of another well into the separator, repeats above mentioned two steps, acquires the rising height of the second liquidometer; (4) works out the water content according to the water content formula of oil well. The method is simple, and the process is convenient, the measuring precise is upgraded greatly.

The invention discloses a high-voltage power-frequency AC voltage-withstanding system mobile measurement device, which comprises a current-limiting resistor and a measurement mechanism, wherein one end of the current-limiting resistor is provided with a conductive column contacted with a test transformer and the other end is provided with a connection seat; the top end of the measurement mechanism is provided with a contact seat in contact conduction with the connection seat; the current-limiting resistor is supported by a supporting table; the supporting table is fixed on a mobile base via a lifting mechanism; and the bottom end of the measurement mechanism is fixed on a lateral movement mechanism, and the lateral movement mechanism is arranged on the mobile base. The current-limiting resistor and a capacitive voltage divider of the system are arranged on an electric vehicle frame to form a platform, the height of the platform is adjustable, electric movement can be realized conveniently and quickly, forward and backward operation is simple and convenient, the system is movable, and hall space is optimized to the largest degree; and the platform can realize quick and accurate positioning of the current-limiting resistor connection part and the test transformer connection part, and a large amount of manpower is saved.

The invention discloses a near infrared conjugated polymer, a preparation method of the near infrared conjugated polymer, and application of the near infrared conjugated polymer to living body imagingand living body tumor treatment. The conjugated polymer is prepared from platinum complexes and alkyne monomers through polymerization. The Pt coupling effect is used for improving the photothermal treatment effect; the photophysical property of the polymers is regulated through a conjugated system, so that the conjugated polymer which has the near infrared ray absorption performance and the goodphotothermal imaging effect and can be used for living mouse tumor treatment is obtained. The conjugated polymer can be used in the technical fields of photodynamics therapy, photothermal therapy, biomarking and detection and the like under the photothermal imaging guidance. The preparation process is simple; the raw materials are cheap and rich; the industrial production is convenient. The structure general formula of the near infrared conjugated polymer is shown in the description.

The invention provides a solvent-assisted SAGD three-dimensional physical simulation experiment method and device. The device comprises an injection device, a simulated oil reservoir model and a recycling device, a first pump unit in the injection device is communicated with a piston container unit, a second pump unit is communicated with a steam generator, the piston container unit and the steam generator are communicated with a gas injection well of the simulated oil reservoir model respectively, one end of a first condenser of the recycling device is communicated with a production well of the simulated oil reservoir model while the other end of the same is communicated with a feeding port of a gas-liquid separator, a second condenser is communicated with a liquid outlet of the gas-liquid separator, a third condenser is communicated with a gas outlet of the gas-liquid separator, a raw oil and water collection container is connected with the second condenser, and a solvent recycling container is connected with the third condenser. By the method and the device, mining conditions of solvent-assisted SAGD technology can be simulated, and mechanism of solvent in the process of SAGD can be studied so as to optimize and improve existing solvent-assisted SAGD technology according to oil reservoir conditions.

An asymmetric compound taking triphenylamine as nucleus and containing benzophenone fragment and a synthesis and an application thereof, belonging to the field of organic dye, in particular relating to the application of the asymmetric compound taking triphenylamine as nucleus and containing benzophenone fragment in photopolymerization. The general formula of the typical chemical structure is shown in formula (I), wherein compound in molecular structural formula (I) represents A: R1, R2: H, R3: CH3, OCH3, OCH2CH3, OCH2CH2CH3, OCH2CH2CH2CH3, N(CH3)2, N(CH2CH3)2, N(CH2CH2CH3)2, N(CH2CH2CH2CH3)2, CN, F, NO2; B: (R1, R2,:, R3: OCH3). 4-diethyl benzophenone phosphonate and derivative containing 4-aldehydegroup-triphenylamine compound react in a glass vessel under the alkaline condition to prepare the asymmetric non-conjugated compound taking triphenylamine as nucleus and containing benzophenone fragment, the absorption maximum thereof is at visible region, the organic dye can be used as light trigger to form a photosensitive system together with auxiliary agent trolamine to be used for visible light polymerization of alkene monomer in solution or to be used as photocuring material.

The system includes a host and a display unit. A container with an opening in front-end face is setup in host. There are slide-rails on each side of the container, and a slide mechanism is erected between two slide-rails. The display unit including display screen as a demountable unit is installed in front end of the said slide mechanism through a pivot, and can slide in the container through the slide mechanism. The host includes at least a first microprocessor, multimedia playing back device, a motor driving circuit. The display unit includes at least a second microprocessor. When host and display unit are utilized as a whole, communication can be carried out between first microprocessor and second microprocessor. The first microprocessor is in charge of coordination of system. When host is apart from display unit, the first and second microprocessor is operated respectively. The system is workable at different location in vehicle and indoor or outdoor, and easy to assemble.

The invention belongs to the technical field of comprehensive utilization of waste and particularly discloses an integral ecological breeding house capable of effectively utilizing a breeding waste resource. The breeding house includes a breeding house body, the breeding house body comprises wall bodies and a ceiling; the breeding house body is internally provided with a culture area, a breeding waste solid-liquid separation area and a urine utilization area; a semi-in-situ compost area is arranged outside the breeding house body, the breeding waste solid-liquid separation area is arranged between the breeding area and the urine utilization area, and the semi-in-situ compost area is arranged on one side of the urine utilization area. The breeding house is used for disposing breeding wastegenerated by fragmentary breeding of farmers, the resource utilization rate of the breeding waste can be greatly increased, and discharged breeding pollution loads are reduced. Through the biologicalbreeding house, efficient dry-wet separation of the breeding waste on site, semi-in-situ aerobic composting of solid feces, fermentation of urine for preparation of nutrient soil and other functions are integrated into a whole part, feces and urine are not accumulated in the breeding house, the breeding waste is effectively converted into a resource, and the breeding house has the advantages of being safe and sanitary, less in emission of pollutants, easy to operate and maintain, high in resource utilization and the like.

The invention discloses a nanometer nickel-based polyhedron catalyst used for aromatic ring hydrogenation, a preparation method thereof and an application thereof. The catalyst is in a polyhedron structure and has a particle size of 2-100 nm. The catalyst is a single nanometer nickel polyhedron catalyst or a nanometer bimetal polyhedron catalyst (expressed as NiM). The preparation method comprises preparation of the nanometer nickel polyhedron catalyst or preparation of the nanometer bimetal polyhedron catalyst. The catalyst is applied to the catalytic aromatic ring hydrogenation. The catalyst has characteristics of stable structure, uniform shapes, appearances and dimensions, exposure of high-activity crystal faces, high reactivity for the aromatic ring hydrogenation, and the like. In addition, the catalyst has advantages of mild reaction conditions, good stability, easy separation of products from the catalyst, convenient recycle and reutilization, and the like. The catalyst has a good industrialization application prospect.

The invention relates to a series furnace device for reducing distillation and production of titanium sponge. The series furnace device mainly comprises a condenser and a reactor, wherein the structures of the condenser and the reactor are the same, and the condenser and the reactor are both assembled by a tank body and a big cover. During a distilling process, the tank body of the condenser, the big cover of the condenser, the big cover of the reactor and the tank body of the reactor are connected in an I-shape from top to bottom. An upper flange of the reactor big cover and an upper flange of the condenser big cover are connected through a rubber mat and a bolt; a magnesium plug is arranged inside a central tube of the reactor big cover with the effect of opening the distilling process; a gas-guide tube is arranged between the central tubes of two big covers for pressing the magnesium plug before distilling and playing the steam flow guiding effect after distilling; and an upper-cooling type cooling water jacket is adopted for indirect cooling. By adopting the series furnace device, the heat separation of the reactor and the condenser can be realized after finishing distilling, the detached condenser is immediately put into the furnace, the afterheat can be sufficiently utilized and the furnace takeup time can be reduced. The assembly and the separation of the reactor and the condenser are simple and the labor intensity is low.

The invention relates to a benzophenone fragment and p-nitrodiphenylethene fragment-containing tree like visible light photoinitiator and synthesis and application thereof, belonging to the field of photoinitiators. The tree like visible light photoinitiator comprises the typical chemical structural general formulae shown in the description, wherein n1 and n2 in molecular structural formulae (I) and (II) represent 1-6, wherein in the molecular structural formula (I), the (I) is prepared through reacting 4-(4'-bromohydrocarbylstyyl) nitrobenzene with 3,5-dihydroxylbenzyl alcohol to obtain a product of 3,5-di((4'-nitrobenzenevinyl)benzene alkoxide)benzyl alcohol, and then reacting the 3,5-di((4'-nitrobenzenevinyl)benzene alkoxide)benzyl alcohol with 4-bromomethylbenzophenone under alkaline conditions; and in the molecular structural formula (II), the (II) is prepared through reacting 4-bromohydrocarbylbenzophenone with 3,5-dihydroxylbenzyl alcohol to obtain a product of 3,5-di((4'-benzoyl)benzene alkoxide)benzyl alcohol, and then reacting the 3,5-di((4'-benzoyl)benzene alkoxide)benzyl alcohol with 4-(4'-hydroxylstyryl)nitrobenzene under alkaline conditions. The benzophenone fragment and p-nitrodiphenylethene fragment-containing tree like visible light photoinitiator has the maximum absorption in a visible light region and can be used as the photoinitiator to form a photosensitive system together with a triethanolamine auxiliary agent and used for visible light polymerization of alkene monomers in a solution or used as photocuring materials.

The invention relates to a modified cobalt oxide catalyst for selective oxidation of styrene. The catalyst is prepared by the following method: dissolving a cobalt salt in deionized water, then addinga silicon dioxide carrier for impregnation, carrying out standing for 8-24 hours, carrying out drying and roasting to obtain a cobalt oxide catalyst, dissolving a modified metal salt in deionized water, then adding the cobalt oxide catalyst for impregnation, carrying out standing for 8-24 hours, and carrying out drying and roasting to obtain the modified cobalt oxide catalyst. In the modified cobalt oxide catalyst, the mass content of cobalt is 0.1-30%, and the mass content of the modified metal is 0.1-30%. The catalyst is simple in preparation, is cheap and is easy to obtain. When the catalyst is applied to selective oxidation of styrene, oxygen can be used as an oxidizing agent, and solvents are not required, so that the catalyst is safe and environmentally friendly, and the product iseasy to separate.

The invention discloses a tea tree mesophyll protoplast separating and purifying method. Young leaves of tea tree seedlings are used as materials, and a protoplast preparing system is established through enzymolysis separation and density gradient purification. The young leaves are easy to obtain; protoplast separation and purification are simple in operation and can be carried out all year round;the separated and purified protoplasts are relatively high in yield and good in integrity; and a foundation is laid for a transient protoplast expression system to carry out researches such as protein subcellular localization, protein interaction, gene expression regulation, subcellular organelle preparation and the like.

The invention relates to aldehyde group-containing visible light photosensitizer taking triphenylamine as a core and synthesis and application thereof. A photosensitizer plays important roles of absorbing light and performing light action. The peak value of UV-visible absorption reaches over 370 nm, the half-peak width is about 100 nm, so that the visible light photosensitizer completely meets the requirement of visible light absorption and can be used for visible light polymerization. A general formula of a chemical structure of the visible light photosensitizer is shown as above, wherein compounds in the molecular structural formula (I) represent A:R1, R2:H, R3:CH3, OCH3, OCH2CH3, OCH2CH2CH3, OCH2CH2CH2CH3, N(CH3)2, N(CH2CH3)2, N(CH2CH2CH3)2, N(CH2CH2CH2CH3)2, CN, F, NO2; B:(R1, R2:, R3:OCH3). The aldehyde group-containing visible light photosensitizer taking the triphenylamine as the core is performed chemical modification to ensure that the peak value of the UV-visible absorption moves to over 370 nm; and the aldehyde group-containing visible light photosensitizer taking the triphenylamine as the core can be used as a photosensitive initiator to form a photosensitive system used for visible light polymerization of vinyl monomers in solution with other auxiliary agents, or can be used for a photocuring material.

The invention provides a fastener group structure, which is used for connecting a first plate with a second plate, and comprises a pin and at least one screw. Each screw comprises a screw rod and a screw head, wherein the screw rod is connected with the first plate, and the screw head is spaced from the first plate. The pin comprises a body and a forked element, wherein the body is connected with the second plate, and the forked element is spaced from the second plate and separably combined with the screw, so that each screw head is abutted between the forked element and the second plate, and the forked element is abutted between the screw head and the first plate. Therefore, the fastener group structure can be used for improving mechanical bonding strength of the first plate and the second plate.

A photosencitizer has important functions of absorbing lights and causing light reaction. The invention discloses synthesis of the p-nitro-stilbene type photosencitizer containing ester bond and an application thereof. The peak value of the ultraviolet visible absorption band can reach at least 380nm and the peak half-width is about 100nm, which fully satisfies the requirement of visible light absorption and can be used for visible light polymerization. The typical general formula of the chemical structure is shown as the above. In the molecular structural formula (I), the R group represents the aromatic substituent of benzene, naphthaline, anthracene and the like. In the molecular structural formula (II), the R group represents alkyls, such as methyl, ethyl, propyl, butyl and the like and the aromatic substituent of benzene, naphthaline, anthracene and the like, wherein, the two R groups are the same. The invention makes the peak value of the ultraviolet visible absorption shift to at least 380nm through chemically modifying the paranitrostilbene type photosencitizer. The photosencitizer of the invention can be used as a photoinitiator to form a photosensitive system with the other accessory ingredient for the visible light polymerization of vinyl monomers in the solution or be used as curable material.

The invention relates to a cell immunity vaccine and relative preparation. Wherein, said vaccine is the immunity cell cultivated from mono/macrophage or macrophage with single or several causal agents or other components. The inventive vaccine has following advantages that: (1), it has high immunity; (2), it has high safety; (3), it has wide spectrum; (4), it has significant effect. The invention has simple process and low cost, with wide application.

The invention discloses a solar high-temperature electrolyzed water coupling hydrogen production system and process based on amino thermal chemical energy storage, and belongs to the technical field of solar photo-thermal electrolyzed water hydrogen production. The system integrates an amino thermochemical energy storage unit, a recompression S-CO2 Brayton cycle unit and a high-temperature water electrolysis hydrogen production unit, all the units are connected and synergistically acted through a plurality of heat exchangers, the amino thermochemical energy storage unit absorbs the temperature of solar decomposition and heat energy release by ammonia synthesis, and on the basis, the deep waste heat recovery method of the system is provided for waste heat caused by various energy transfer processes in the integrated solar hydrogen production system, the collaborative optimization and complementation process of solar energy and chemical energy is achieved, the target energy utilization rate can reach 27%, a brand new path is provided for solar hydrogen production, and the system has great significance in solar energy utilization and storage.

The invention provides a bisphenol hydroxyl monomer containing an anthryl group and a synthesis method and application thereof. The bisphenol hydroxyl monomer containing the anthryl group can be usedfor preparing anthryl-group-containing polymers including polyether, polysulfone, polyester, polycarbonate and the like, especially can be used for preparing polymers with higher glass transition temperature, and the polymers can be functionalized to prepare functional polymers with different performances through D-A reaction or anthryl group dimerization reaction. Therefore, the bisphenol hydroxyl monomer containing the anthryl group has good application prospect in preparing the functional polymers.

The invention relates to a holder and a bicycle lock, concretely relates to a holder (1) and a lock (2) with a lock shell (20), wherein the holder (1) comprises a flexible holder middle intercept (12) and a holder fastening intercept (13) with a certain number of fastening openings (14) designed and arranged to fasten a projection part (24) arranged outside the lock shell (20) and the lock shell (20) comprises a tube support surface (23) and the projection part (24) designed and arranged to fasten the holder (1) in aid of the fastening opening (14) on the holder (1).

The invention discloses a method for detecting lactic acid bacteria in probiotic bacteria, and belongs to the technical field of detection for microbial products. The method comprises the following steps: (1) adding a sample to be tested to a PBS buffer solution supplemented with BSAV, homogenizing, and preparing a homogenate of the sample, wherein the ratio of the sample to be tested and the PBSbuffer solution is 1g: 9mL, adding a lactose solution to the homogenate of the sample, and removing a supernatant by a water bath and centrifugation to obtain a bacterial suspension; (2) adding lacticacid bacteria immunomagnetic beads to the bacterial suspension obtained in the step (1), after mixing and shaking, placing the bacterial suspension on a magnetic stand and layering, discarding the upper layer, eluting the lower layer sample, adding the PBS buffer solution to the eluted lactic acid bacteria immunomagnetic beads, and shaking and resuspending magnetic beads to obtain a sample solution to be tested; (3) culturing, observing, and testing the sample solution to be tested. The invention shortens the detection time of the lactic acid bacteria in the sample, improves the detection rate of the lactic acid bacteria and the accuracy of the detection result, and has high detection sensitivity.

According to an improved construction kit of modular circuit elements provided by the present invention, the individual circuit elements for forming an electronic circuit are formed in the shape of a module, and the circuit elements are configured to be connected to a square or rectangular circuit element block module by an I-shaped or H-shaped circuit element coupling module for an electrical connection such that the electrical connection of the electronic circuit for testing a circuit and a coupled state between the modules can be stably maintained.

The invention discloses a sensor for hydrazine detection, a nitrogen-doped porous carbon loaded copper-cobalt nano composite material and a preparation method and application thereof, and belongs to the technical field of inorganic material synthesis. According to the nitrogen-doped porous carbon loaded copper-cobalt nano composite material, nitrogen-doped porous carbon NPC serves as a substrate material, Cu and Co nano particles are loaded on the surface of the NPC, and the NPC is of a polyhedral hollow structure; the preparation method of the composite material comprises the following steps:adding soluble copper salt, cobalt salt and an adhesive into a nitrogen-doped porous carbon material, reacting, and carrying out liquid-phase reduction on hydrazine hydrate in a hydrothermal system.The composite material can be used as a modifier to realize high-sensitivity and high-selectivity electrochemical quantitative determination of hydrazine, and has the advantages of favorable dispersity, low consumption, simple preparation method, mild reaction conditions and low energy consumption.

The invention relates to a method for synthesizing (S)-1-1(2,6-dichloro-3-fluorine-phenyl) ethanol through immobilized bienzyme catalysis. 2,6-dichloro-3-fluoroacetophenone is used as a substrate, andreacts with a reaction solvent at 30 to 60 DEG C under the synergetic catalysis action of calcium phosphate-enzyme crystal and coenzyme NADP+ to prepare an optical pure product (S)-1-1(2,6-dichloro-3-fluorine-phenyl) ethanol. The method disclosed by the invention is low in cost; the enzyme crystal is convenient for catalytic separation and repeated use; the target product yield can be up to 95 percent, and ee can be up to 100 percent; the method is environmentally friendly, can save energy and reduce consumption, and is suitable for industrial production.