70results about How to "Simplified processing steps" patented technology

The invention relates to the field of printing and dyeing wastewater treatment equipment, in particular to printing and dyeing wastewater circulation treatment equipment with a treatment volume adjustable function, which comprises a mixing box body for supporting and a sealing cover plate fixedly arranged on the upper end surface of the mixing box body and used for sealing, and two groups of feeding guide pipes are arranged on the upper end surface of the sealing cover plate. According to the invention, the transmission clamping shaft drives the mixing blade plate to chemically treat printing and dyeing wastewater in the mixing box body, and meanwhile, the transmission clamping shaft can synchronously provide power for the wastewater treatment device and the centrifugal filtration device, so that the wastewater treatment device can carry out filter pressing and harmful substance adsorption treatment on the printing and dyeing wastewater; meanwhile, the centrifugal filtration device can perform centrifugal filtration on the wastewater, and the multi-level advanced treatment efficiency of the equipment on the wastewater can be effectively improved in a treatment mode of combining physical treatment and chemical treatment, so that the qualified rate of the equipment on the printing and dyeing wastewater treatment is improved to the greatest extent.

The invention relates to the field of material science, and discloses a preparation process of a softwood rubber metal composite material, which comprises the following steps: S1, cleaning the surfaces of metal, softwood and rubber; s2, plasma treatment is conducted on the surfaces of the metal, the cork and the rubber; s3, preparing a modified chemical coupling agent, and coating the modified chemical coupling agent on the surfaces of metal, cork and rubber; s4, hot press molding is carried out, and metal, rubber and cork are stacked and subjected to hot press treatment; and S5, cooling treatment is conducted, and the cork rubber metal composite material is obtained. The modified chemical coupling agent is prepared from the following components in percentage by weight: 70 to 80 percent of 3-methyl propyl triethoxy silane; 10 to 20 weight percent of diisocyanate-based silicone oil; 5 to 10 wt% of polyethylene glycol; and 2-5 wt% of dimethyl diallyl ammonium chloride. The interface bonding strength of the softwood rubber metal composite material is remarkably improved, and the overall mechanical performance is enhanced.

The invention belongs to the field of biological pharmacy and biological conversion, and particularly relates to a lipase mutant and application thereof. The lipase CALB mutant disclosed by the invention is obtained by carrying out single-point mutation or combined mutation on the 40th site, the 134 site, the 154 site, the 189th site, the 278th site and the 281 site of an amino acid sequence as shown in SEQ ID NO.1. Compared with a wild type, the mutant has the advantage that the stereoselectivity is greatly improved when the mutant is used for catalyzing racemization 3-cyclohexene-1-methyl formate to produce (S)-3-cyclohexene-1-formic acid. Compared with a traditional chemical method for preparing (S)-3-cyclohexene-1-formic acid, the lipase CALB mutant provided by the invention is high in stereoselectivity, mild in reaction condition, environment-friendly, low in equipment requirement, capable of greatly reducing the production cost and wide in application prospect in industrial application.

The invention relates to the field of medicine synthesis and preparation, in particular to a synthesis method of toxyanib phosphate. The use amount of acetic acid is greatly reduced in the preparation process, so that excessive acid does not need to be neutralized in the post-treatment process, and a large amount of wastewater is not generated; in addition, the use amount of sodium nitrite is reduced, and the environment and health are facilitated; the enamine reduction reaction does not use acetic acid as a solvent and a hydrogenation reaction catalyzed by heavy metal palladium, so that the safety of the reaction is improved, and the purity of the product is also improved; a decarboxylation reaction and a Vilsmeier-Haack reaction are carried out by a one-pot method, so that the reaction steps are reduced, and the product purity is improved; when aldol reaction is carried out in side chain splicing, side reaction and generation of isomer impurities are reduced. The method is short in route, mild in reaction condition, low in equipment requirement and convenient to operate, industrial production is easy to achieve, and a complex purification method is not needed.

The invention discloses a magnetic flocculant and application thereof in a cutting fluid wastewater treatment process, and relates to the technical field of sewage treatment. The preparation method of the magnetic flocculant comprises the following steps: impregnating modified magnetic nanoparticles in chitosan-poly-silicon ferrotitanium sulfate, carrying out ultrasonic treatment for 30-40 minutes, sucking out by using a high-strength magnet, drying at 50-60 DEG C, and repeating the steps of impregnating, sucking out and drying for 3-5 times to obtain the magnetic flocculant. The prepared flocculant is combined with an existing magnetic separation device, suspended particles and colloidal substances in the waste liquid are gathered to form flocs, meanwhile, organic matter in the waste liquid is adsorbed, and the purpose of efficiently and rapidly treating the grinding waste liquid is achieved through the magnetic attraction effect.

The invention discloses a nuclear facility decommissioning simulation cloud model intelligent processing and rendering method and system, and relates to the technical field of computer graphic processing and three-dimensional model rendering, and the method comprises the steps: uploading a first model file, and carrying out the first analysis; processing the first model data for serialized storage; and loading the first model and carrying out scene real-time rendering. According to the intelligent processing and rendering method for the nuclear facility decommissioning simulation cloud model, system resources are effectively distributed through an asynchronous parallel processing mechanism, and blockage of a main thread is avoided. The compatibility of the multi-format model is realized by calling the plurality of model analysis sub-modules, and the efficiency and accuracy of processing different-format models by the system are improved. The compatibility of the multi-format model is realized by calling the plurality of model analysis sub-modules, and the efficiency and accuracy of processing different-format models by the system are improved. The method has better effects in the aspects of stability, model processing efficiency and accuracy.

The invention discloses a high-precision radar target recognition system based on orthogonal waveform design and a convolutional neural network. The high-precision radar target recognition system comprises a radar orthogonal waveform design module, a waveform generation module, a transmitting antenna module, a receiving antenna module, a waveform receiving module and a convolutional neural network module, by designing an orthogonal radar transmitting pulse string, the receiving entropy is increased, so that a radar echo pulse string received by a receiving antenna contains enough target information, and strong difference is presented between a target and clutter as well as multipath interference characteristics; therefore, the convolutional neural network can extract target key features from a radar echo pulse string received by an antenna and suppress clutter and multipath interference at the same time. According to the method, radar echoes are directly processed in the electromagnetic original domain, features are efficiently extracted, high-precision recognition is achieved, traditional multi-step signal processing is integrated into one step, the process is simplified, the hardware complexity of a receiver can be reduced possibly, and the method has great significance in improving the performance of an electronic information system.

The application belongs to the field of biopharmacy and bioconversion, and particularly relates to a lipase mutant and application thereof. The lipase CALB mutant of the application is obtained by adopting single-point mutation or combined mutation on positions 40, 134, 154, 189, 278 and 281 of the amino acid sequence shown in SEQ ID NO. 1. The mutant greatly improves the stereoselectivity in catalyzing the production of (S)-3-cyclohexene-1-methyl formate from racemic 3-cyclohexene-1-methyl formate. Compared with the traditional chemical method for preparing (S)-3-cyclohexene-1-methyl formate, the lipase CALB mutant provided by the application has high stereoselectivity, mild reaction conditions, is friendly to the environment, has reduced requirements on equipment, greatly reduces the production cost, and shows a wide application prospect in industrial application.

This invention discloses a ceramic filter media based on Yellow River sediment. By mass percentage, the ceramic filter media comprises the following components: 66-82 wt% Yellow River sediment, 9-15 wt% high-alumina bauxite, 3-7 wt% iron oxide, and 6-12 wt% sodium-based bentonite; the mass ratio of SiO2, Al2O3, and Fe2O3 in the above system is 40-58:8-20:5-12. This application provides a high-value-added utilization method for Yellow River sediment, realizing the resource utilization of Yellow River sediment and solving the problem of Yellow River sediment disposal. The ceramic filter media prepared in this application has wide applications, including in wastewater treatment processes such as aerated biological filters and constructed wetlands. By utilizing solid waste to treat water pollution, it achieves "treating pollution with waste."

The invention provides a solvent-free organic silicon release agent and a preparation method thereof. The release agent comprises vinyl polysiloxane, an inhibitor, hydrogen-containing silicone oil, expandable porous microspheres and a catalyst, wherein the expandable porous microspheres are subjected to corona treatment. The release agent can form a layer of porous expanded microsphere structure on the surface after being heated and cured, the specific surface area is sharply increased, and the unit contact area with an adhered object is greatly reduced, so that the silicon transfer is reduced.

The invention provides a method for detecting the glycoform content of an antibody based on liquid chromatography-mass spectrometry, which comprises the following steps: (1) carrying out reduction reaction on an antibody sample to be detected and a reducing agent to obtain an antibody reduction subunit solution; and (2) detecting the antibody reduction subunit solution by adopting ultra-high performance liquid chromatography-mass spectrometry, and calculating to obtain the glycoform content of the antibody. According to the detection method provided by the invention, the sample pretreatment process is simple and rapid, the ultra-high performance liquid chromatography-mass spectrometer is also very efficient in determination, the detection time of a single sample is greatly shortened, the detection flux is improved, and strong and powerful support is provided for product development of biological drugs.

The present application belongs to the technical field of pesticide residue detection method, and particularly relates to a method for determining the chlorothalonil residue in fruits and vegetables, comprising the following steps: S1, extracting the fruit and vegetable sample by using an alkaline extraction solution to obtain an extraction solution; S2, adding a garlicin solution to the extraction solution; S3, adding a purification filler to the conversion solution, vortexing, centrifuging, filtering to obtain a to-be-tested solution; S4, using an ultra-high performance liquid chromatography-tandem mass spectrometer to detect the concentrations of mercaptochlorothalonil and 4-hydroxychlorothalonil in the to-be-tested solution, and calculating the total residue of chlorothalonil in the sample. The present application breaks through the traditional idea of inhibiting the conversion of chlorothalonil, actively promotes the complete and quantitative conversion of chlorothalonil into a single derivative through "alkaline extraction + exogenous garlicin catalysis", changes the complex and uncontrollable conversion process into a controllable and quantitative chemical reaction, and avoids the problems of low recovery rate and false negative caused by incomplete or unmeasurable conversion in principle.

The invention relates to the technical field of phase change materials, and discloses an MXene / MWCNT reinforced charcoal-based composite phase change material and a preparation method thereof, the preparation method comprises the following steps: S1, preparing MWCNT and a metal salt to obtain a suspension; adding biomass into the suspension, and drying to obtain a precursor; s2, performing heat treatment on the precursor to obtain biochar; blending and drying the biochar and a perfluorooctanoic acid ethanol solution to obtain a support material; s3, blending and drying the support material and an MXene solution to obtain an enhanced support material; s4, the enhanced support material is subjected to a vacuum impregnation method, and the bio-based composite phase change material is obtained. Compared with paraffin and unreinforced composite PCM, the heat conductivity of the composite PCM prepared by the invention is respectively improved by 313.77% and 26.3%. And by adopting the biochar-based support material, the paraffin encapsulation efficiency is improved again and reaches 85.18%.

The utility model discloses a pathological tissue embedding box, which belongs to the technical field of medical instruments and comprises an embedding box body, an embedding groove is arranged on the top surface of the embedding box body, and a penetrating opening is arranged on the top surface of the embedding box body. The embedding assembly comprises a fixed seat, a convex groove barrier, a movable grid plate and a bottom clamping plate, and the fixed seat is fixedly connected to the top surface of the embedding box body. According to the pathological tissue embedding box, embedding operation is carried out through the embedding box body, mechanical damage caused by multiple times of transfer is reduced, the integrity of tissues is guaranteed, samples are provided for accurate pathological diagnosis, pathological tissue treatment steps are simplified through the integrated operation process, time and manpower input needed by tissue transfer are reduced, and the working efficiency is improved. The number of times of tissue transfer is reduced, the probability of occurrence of errors such as tissue confusion and loss caused by manual operation is effectively reduced, the reliability and stability of a pathological detection result are improved, and the pathological diagnosis work quality is improved.

The invention discloses a rapid detection method for 27 steroid hormones in mangrove plants. The method comprises the following steps: S1, putting a mangrove plant sample subjected to freeze drying, grinding and sieving into a centrifugal tube A, and then adding an isotope internal standard for balancing; adding acetonitrile, carrying out vortex, ultrasonic extraction and centrifugation, and taking supernate; s2, methanol and acetonitrile are sequentially added, vortex, ultrasonic extraction and centrifugation are performed, and supernate obtained after acetonitrile extraction in the S1, supernate obtained after methanol extraction in the S2 and supernate obtained after acetonitrile extraction in the S2 are combined; s3, transferring the supernate into a centrifugal tube B containing filler, carrying out vortex centrifugation, and putting the supernate into a glass test tube; s4, extracting the filler in S3 again by using acetonitrile, carrying out vortex centrifugation, and combining the two supernatants in a glass test tube; s5, carrying out nitrogen blowing concentration on the solution in the glass test tube, and fixing the volume in methanol; s6, determining the steroid hormones and the metabolites thereof by using high performance liquid chromatography-tandem mass spectrometry, and obtaining the content level of the steroid hormones and the metabolites thereof in the plants through data analysis and quantitative calculation.

The invention discloses a method for simultaneously determining 19 chlorophenol compounds in aquatic products, and belongs to the technical field of food safety detection. The method of the invention is based on UPLC-MS method using QuEChERSEMR-Lipid pretreatment technology, and BEH C 18 Chromatographic column separation, acetonitrile-ammonium formate as the mobile phase gradient elution, and atmospheric pressure chemical ionization source ionization were used to detect 19 chlorophenol compounds in aquatic products. This method has high separation, accuracy, rapidity and good repeatability, and provides a practical and reliable technical means for the high-throughput rapid detection of the contents of 19 CPs in aquatic products.

The invention relates to the field of clamp surface treatment, and discloses a surface treatment device for an electroplated plate clamp, which comprises a layered dipping mechanism positioned on a main operation kettle and used for bearing high-temperature molten metal to be attached on the surface and allowing the clamp to be dipped; the cooling and curing mechanism is positioned on the main operation kettle and is matched with the annular liquid storage tank I and the annular liquid storage tank II to generate an air duct for attached cooling; the fixed material jacking mechanism is located on the fixed base and used for changing the different heights of the clamp in the processing process. And the molten metal coating mechanism is located on the main operation kettle and is matched with the base frame, the small-diameter cylindrical limiting frame, the outer threaded cylinder and the inlaying groove to be used for fixing and unfolding multiple sets of to-be-treated clamps at the same time. Through the annular liquid storage tank and the specially designed coating mechanism, uniform and accurate application of a coating material (copper solution) can be ensured. The annular liquid storage tank is circularly used, and the positioning disc and the linkage cylinder are precisely controlled, so that the coating can be uniformly distributed on the workpiece, which is crucial for improving the quality and the consistency of the product.

The invention belongs to the technical field of organic chemical synthesis, and relates to a method for recycling a compound, in particular to a method for recycling 2, 6-dichloroacetophenone. The invention relates to a method for recycling 2, 6-dichloroacetophenone, which comprises the following steps: taking waste containing 2, 6-dichloroacetophenone as a raw material, and reacting in the presence of a catalyst and inorganic alkali to generate m-dichlorobenzene. According to the method, the dichloroacetophenone waste is used as the raw material to recover the m-dichlorobenzene serving as the dichloroacetophenone synthesis raw material, equipment required by the process is conventional equipment, other solvents are not involved in the reaction, normal-pressure reaction is adopted in the process, the reaction temperature is lower, the process path is shorter, the operation is simple, the safety is high, waste resources are recycled, and the method is suitable for industrial production. The environmental pollution is effectively reduced, and the raw material consumption of the dichloroacetophenone production process is remarkably reduced.

The invention provides a rubber leaf original-state dinner plate and a manufacturing method thereof, the dinner plate is manufactured by taking original-state rubber leaves as main raw materials and rubber leaf powder as auxiliary materials and adopting a hot press molding process, and the manufacturing method comprises the specific steps of screening, cleaning, drying, crushing, paving, pre-pressing, feeding, hot press molding, shaping, trimming, packaging, warehousing and the like. No additive is added in the dinner plate forming process, viscous substances are generated at high temperature and high pressure through lignin and other components contained in the rubber leaves, the effect similar to that of an adhesive is achieved, glue-free gluing is achieved according to the self-adhesion principle, and the dinner plate is green, healthy and environmentally friendly. According to the method, original state forming is used for replacing powder forming or slurry forming and other modes, the possibility that powder or fine fibers fall off and are inhaled by a human body to cause potential hazards is avoided, residual materials obtained after trimming can be smashed again to be used for powder layer paving, energy consumption in the machining process can be reduced, the production efficiency is high, and the production cost is low. The method is a green tableware manufacturing method which can be widely applied.

The invention discloses a blood component monitoring method and device based on a visual identification technology. The device comprises a sensor host and a sensor probe. The sensor host comprises a bottom shell, an image processing mainboard, an elastic buckle, an upper cover, a key, a display unit, a lock ring and a mounting bracket; the image processing mainboard and the elastic buckle are fixed on the bottom shell, the key and the display unit are fixed on the upper cover, and the upper cover and the bottom shell are fixed through the locking ring and are integrally installed on the installation support. The sensor probe comprises a probe shell, a probe fixing plate and a camera. The image of the centrifugal cup in the blood centrifugal separation process is collected through the camera, the blood components are analyzed through the image recognition technology, and accurate recognition of the blood components is achieved; and meanwhile, the mounting position of the centrifugal cup can be automatically monitored. The device is simple in structure, reliable in performance and low in cost, and has higher recognition accuracy and efficiency compared with a traditional photoelectric sensor recognition method.

The utility model relates to the field of label processing equipment, in particular to a label processing device which comprises a feeding frame and a conveying frame, the feeding frame is provided with a feeding part and a feeding belt, the feeding part is used for storing labels, the feeding belt is used for transferring the labels of the feeding part to the conveying frame, and the conveying frame is provided with a conveying belt; the terminal end of the feeding belt is connected with the front end of the conveying belt. A code spraying assembly, a drying assembly, a first code detecting assembly and a labeling assembly are sequentially arranged on the conveying frame in the advancing direction of the conveying belt. The code spraying assembly is used for spraying bar codes on the labels; the drying assembly is used for drying and shaping the bar codes sprayed on the labels; the first code detection assembly is used for carrying out first detection on the bar code on the label so as to confirm whether the bar code spraying on the label is qualified or not; the labeling assembly is used for pasting a label to a bar code on the surface of the label and shielding the bar code. The purpose of the utility model is to effectively improve the efficiency of daily processing and production of labels.

The invention belongs to the technical field of sodium-ion battery diaphragms, and particularly discloses a preparation method of a metal organic framework diaphragm, and the preparation method comprises the following steps: S1, preparing hierarchical pore MIL-101-Fe; and S2, preparing the MIL-101-Fe / PP diaphragm. According to the preparation method of the metal organic framework diaphragm provided by the invention, the prepared metal organic framework diaphragm is applied to a sodium ion battery, and the ion migration rate and the ion conductivity can be improved.

The present disclosure provides a long-term care insurance information system and electronic equipment, the system comprising: a social security system; a long-term handling management system, used to implement the handling management business involved in long-term care insurance, and bidirectionally interconnected with the social security system to perform bidirectional data transmission; a long-term care service system, used to implement the nursing service business involved in the long-term care insurance, and bidirectionally interconnected with the long-term handling management system to perform bidirectional data transmission; a long-term care insurance system, used to calculate long-term care insurance payment information, pay the long-term care insurance payment information to the long-term care service system or the insured object, and bidirectionally interconnected with the long-term handling management system to perform bidirectional data transmission. The present disclosure can realize the organic integration of information, simplify the business processing steps, and improve the business processing efficiency.

The invention relates to a preparation method of a bio-based 1, 5-pentamethylene diisocyanate product with yellowing resistance and high stability. A synergistic composite stable system composed of an efficient main antioxidant, an auxiliary antioxidant and a plurality of ultraviolet absorbents / light stabilizers in a scientific proportion is constructed. Wherein the main antioxidant is mainly used for capturing free radicals and blocking an oxidation chain reaction; the auxiliary antioxidant decomposes hydroperoxide to inhibit the hydroperoxide from further initiating the degradation of the material; the ultraviolet stabilizer effectively delays the color change process caused by illumination by absorbing or quenching excited state energy. The preparation method disclosed by the invention has the advantages of high process compatibility, easiness in acquisition of auxiliaries, simple compounding and post-treatment steps and convenience in large-scale popularization; the environmental protection property is outstanding, the yellowing resistance and the storage stability of the product are greatly improved, the normal-temperature closed storage period is prolonged to 6 months or above, the NCO content retention rate is greater than or equal to 96%, and the storage and transportation cost is reduced; the influence of thermal oxidation and photodegradation is resisted, and a complex application environment is adapted.

The invention provides a zero discharge method of electroplating alkaline wastewater, which comprises the following steps: preliminarily filtering the alkaline wastewater generated by electroplating by using a screen, and adding an acidic solution to adjust the pH value of the wastewater to 7-8; adding a flocculating agent which accounts for 3-5% of the mass of the wastewater, then stirring at the stirring speed of 150-250r / min for 20-30 minutes, and then introducing the wastewater into a sedimentation tank for sedimentation for 2-2.4 hours; then filtering through an ultrafiltration device and a nanofiltration device; feeding the filtered wastewater into an MVR (mechanical vapor recompression) evaporator for evaporative crystallization treatment, discharging crystalline salt in a crystallizer through a scraper conveyor, and condensing at the temperature of 40-50 DEG C to realize zero discharge of the wastewater. According to the zero discharge method for the electroplating alkaline wastewater, harmful substances in the electroplating alkaline wastewater are efficiently separated and converted, and finally zero discharge of the wastewater is achieved.

The invention discloses preparation and application of an anti-reverse electrode material with a core-shell structure, and relates to the technical field of proton exchange membrane fuel cells. Comprising the following steps: S1, preparing materials; s2, preparing an anti-reverse pole material; s3, preparing slurry; s4, manufacturing a membrane electrode; wherein the material preparation comprises the following steps: nano iridium oxide with the average particle size of 5-20 nm and the purity of more than or equal to 99.9%; the carbon source adopts one or more of glucose, cane sugar and starch, and the purity is greater than or equal to 99.5%. According to the preparation method, nano iridium oxide is subjected to porous carbon wrapping treatment, so that the dispersion state of nano iridium oxide in slurry is remarkably improved; the nano particles are distributed more uniformly and can play a better role in a catalytic layer of the fuel cell; the coated nano iridium oxide shows better stability, so that the occurrence of a sedimentation phenomenon is reduced; in the preparation process, the loss of the catalyst is less, and the consistency and reliability of a final product are improved.

The utility model discloses a quick dismounting and connecting mechanism and modularization curtain wall belongs to building curtain wall technical field. The curtain wall includes the cross -shaped frame of main installation frame and the side installation frame of both sides and a plurality of curtain wall main parts and connecting assembly. The preliminary positioning is realized to curtain wall main part through the sliding fit of sliding slot and support rod, and the transverse and longitudinal spacing is realized through the bumping of first abutting convex strip, second abutting convex strip and the protruding block on connecting support. The locking assembly adopts the locking wheel with eccentric hole, and the fixing of curtain wall main part is realized after rotating and clamping into locking groove, and the perpendicular direction spacing is enhanced through the clamping of semicircle ring and limiting groove. U-shaped elastic plate and second end cover are used for shielding the gap between curtain wall board, and can adapt to the deformation caused by temperature change. The structure realizes the quick positioning, double locking and gap shielding of curtain wall, improves the installation precision, efficiency and long -term stability, and is convenient to dismount and maintain.

The present invention discloses a cardboard warping pretreatment cutting device and a cutting method, which relate to the field of cardboard processing technology, and include a shell, a conveyor belt is fixedly arranged at the bottom of the inner side of the shell, a driving mechanism is arranged at the top of the inner side of the shell, a hot pressing mechanism is arranged at the bottom of the driving mechanism, and a cutting mechanism is arranged at the outer side of the driving mechanism, a supporting mechanism is arranged at the inner side of the conveyor belt, and a blocking and positioning mechanism is arranged at the rear side of the top of the supporting mechanism; the blocking and positioning mechanism blocks the warped cardboard, and the driving mechanism drives the hot pressing mechanism and the cutting mechanism to move downward synchronously. The present invention can complete the hot pressing and leveling and positioning of the warped cardboard before cutting, so as to ensure the subsequent cutting accuracy and reduce the defective rate. At the same time, the cardboard after cutting does not need to be sprayed with steam and hot pressed, which simplifies the processing steps and saves manpower.

The present application discloses a method, device and medium for realizing an enhanced verification code based on the rotation of 3D space particles, determines the text content of a random verification code to be converted into a corresponding two-dimensional code image, and performs grayscale processing on the two-dimensional code image; converts each pixel in the grayscale two-dimensional code image into a 3D space particle through a particle manager, and adjusts the plane coordinates of the corresponding 3D space particle according to the pixel position of each pixel in the two-dimensional code image to obtain a target two-dimensional code image corresponding to the 3D space particle; adjusts the vertical coordinate of each 3D space particle in the target two-dimensional code image to obtain a scrambled 3D space particle, and displays the scrambled 3D space particle on an operation panel based on a verification trigger of the verification code; adjusts the scrambled 3D space particles based on an operation instruction received by the operation panel, and recognizes the adjusted two-dimensional code image, and determines whether the verification based on the enhanced verification code passes according to the recognition result.

The invention relates to the field of compound preparation, in particular to a method for preparing thiamine hydrochloride. The method comprises the following steps: carrying out contact reaction on thiamine nitrate, ammonium chloride and hydrogen chloride under the condition of an organic solvent, and separating reaction liquid to obtain thiamine hydrochloride solid. Compared with the prior art, ammonium chloride is used for replacing part of hydrochloric acid to participate in the reaction in the thiamine hydrochloride production process, so that the dosage of hydrochloric acid is reduced, equipment corrosion can be reduced, subsequent wastewater treatment steps are simplified, the product yield is not influenced, the content of other impurities is not increased, new production equipment is not added, and the production cost is effectively saved; furthermore, the materials are recycled, so that a more environment-friendly and cost-saving process route can be realized.