87 results about "Batch reaction" patented technology

The invention provides a method for preparing hydrogenated bisphenol A by continuous catalytic hydrogenation of a fixed bed. The method comprises the following steps: step A, mixing and preheating a bisphenol A solution, a low-carbon amine additive and hydrogen in a gas-liquid mixing preheater to prepare a reaction material; step B, enabling the preheated reaction material to flow through a fixed bed reactor preloaded with a Ru-based catalyst, and carrying out catalytic hydrogenation reaction in the fixed bed reactor to generate a product material; step C, separating the product material through a gas-liquid separator to obtain a hydrogenated bisphenol A solution and hydrogen, and recycling the hydrogen; and rectifying the hydrogenated bisphenol A solution to obtain hydrogenated bisphenol A. The method provided by the invention effectively overcomes the defect that the single-batch reaction time of the existing catalytic hydrogenation process reaches 4-12 hours, and greatly shortens the continuous catalytic hydrogenation reaction time; by adding the low-carbon amine auxiliary agent, the reaction activity is promoted, and the generation of dehydroxylation byproducts is reduced; the selectivity of the product can be effectively guaranteed, the product is easy to separate, the safety is good, the cost is obviously reduced, and industrial application is easy.

The invention provides a preparation method of 2-pentyl-2-cyclopentenone, and belongs to the technical field of organic synthesis. The preparation method comprises the following steps: carrying out a first-stage isomerization reaction on 2-pentylidene cyclopentanone and a first composite catalyst in a first atmosphere to obtain an intermediate, carrying out a second-stage isomerization reaction on the intermediate and a second composite catalyst in a second atmosphere, and controlling the volume ratio of nitrogen to hydrogen in the first atmosphere and the second atmosphere to obtain the 2-pentylidene cyclopentanone. In the first-stage isomerization reaction, the conversion rate of converting 2-pentylidene cyclopentanone into 2-pentyl-2-cyclopentenone is increased, and in the second-stage isomerization reaction, the use amount of hydrogen in the second atmosphere is reduced, the temperature of the second-stage isomerization reaction is increased, generation of by-products is inhibited, and the yield of 2-pentylidene cyclopentanone is increased. Further, the yield and the purity of the 2-pentyl-2-cyclopentenone can be improved. According to the preparation method, the first-stage isomerization reaction and the second-stage isomerization reaction are continuous reactions, intermittent reactions are not needed, and the preparation method is more suitable for industrial application.

This invention discloses a microchannel continuous preparation method for S-(-)-bioprolol fumarate intermediates, belonging to the field of medicinal chemistry technology. The method includes dissolving 4-isopropoxyethoxymethylphenol and a base in a solvent to provide a mixture; and contacting R-epoxychloropropane with the mixture in a microchannel reactor to react and form [[4-[[2-(1-methylethoxy)ethoxy]methyl]phenoxy]methyl]ethylene oxide. This invention overcomes the shortcomings of low reaction yield and long reaction time in existing technologies. By synergistically adjusting the material concentration, flow rate, residence time, and other reaction conditions, it improves reaction efficiency, shortens the reaction cycle, and increases the molar yield to over 70%. It significantly surpasses traditional batch reactions in terms of reaction efficiency, reaction time, and byproduct control.

A system and method for chemically destroying, degrading and incinerating a fluorocarbon or fluorinated material, such as perfluoroalkyl and polyfluoroalkyl substances (PFAS), with reduced emissions of gaseous PFC is provided. The method includes mixing the fluorinated material with an aqueous alkoxide base in a batch reactor to form a suspension. The PFAS can be provided by AFFF. The reaction mixture is heated to a temperature ranging from about 25ºC to about 400ºC for about 0.5 hours to about 240 hours to defluorinated fluorocarbons in the PFAS and produce a defluorinated waste product. More specifically, the method converts organic fluorine present in the PFAS to inorganic fluoride. Thus, the defluorinated waste product can be incinerated with reduced emissions of harmful gaseous PFCs.

The application provides a method for preparing high-iron-phosphorus-ratio iron phosphate in batches at low cost, and the steps are as follows: S1. reacting a ferrous sulfate solution, a phosphorus salt solution and hydrogen peroxide to obtain amorphous iron phosphate; S2. filtering and washing the amorphous iron phosphate; S3. adding pure water to the filtered cake of the washed amorphous iron phosphate, stirring, heating, adding a crystal transformation promoter after keeping warm, and reacting to obtain iron phosphate dihydrate slurry, and reserving part of the iron phosphate dihydrate slurry; S4. squeezing, drying and calcining the remaining iron phosphate dihydrate slurry; S5. repeating steps S1-S4 in batches; if it is the first batch reaction, the crystal transformation promoter is phosphoric acid, and if it is not the first batch reaction, the crystal transformation promoter is a mixture of hydrogen peroxide and crystal nuclei prepared from the iron phosphate dihydrate slurry reserved in the last batch. The method can greatly save the preparation cost of iron phosphate, and the iron-phosphorus ratio of the prepared iron phosphate is above 0.99.

The utility model relates to the technical field of chemical equipment, and discloses a quick batch changing reaction kettle which comprises a kettle body, an inner container is detachably connected in the kettle body, a dismounting mechanism is fixedly connected to the top of the kettle body, a top cover is fixedly connected to the top end of the inner container, and a sealing mechanism is arranged in the top cover. The dismounting and mounting mechanism comprises a flange plate I, the bottom end of the flange plate I is fixedly connected to the top end of the kettle body, a plurality of hydraulic cylinders are fixedly connected to the inner wall of the bottom of the flange plate I, the driving ends of the hydraulic cylinders are fixedly connected with round blocks, and convex plates are fixedly connected to the far sides of the round blocks. According to the utility model, the inner container can be quickly lifted out, and a new inner container can be mounted through reverse operation, so that compared with the traditional batch changing mode, the batch changing time is greatly shortened from the traditional hour to the minute, the production efficiency is remarkably improved, the downtime of equipment is reduced, and higher productivity is brought to chemical production.

The invention relates to a method for continuously preparing alkyl diaryl phosphonate, which comprises the following steps of: a, reacting trialkyl phosphite and triaryl phosphite in a high-temperature section filled with a solid catalyst to obtain a reaction product; and b, removing low-fraction byproducts in the reaction product in the step a through reduced pressure distillation or fractionation at the outlet of the high-temperature section, feeding the residual product into a cooling section, collecting a crude product of the alkyl diaryl phosphonate at the outlet of the cooling section, and carrying out post-treatment to obtain the alkyl diaryl phosphonate. A continuous catalytic reaction is carried out through the solid catalyst filled in the tubular reactor, and an intermittent reaction is changed into a continuous reaction, so that the liquid holdup is greatly reduced, and the safety coefficient of production is improved; a traditional halogenated alkane catalyst is not used, so that the risk that the temperature rise is out of control is effectively reduced; according to the method, the reaction time is shortened while the reaction yield is not reduced, and the production efficiency is improved.

The invention belongs to the technical field of enzyme engineering, and particularly relates to an immobilized enzyme preparation containing D-psicose-3-epimerase cells as well as a preparation method and application of the immobilized enzyme preparation. The preparation method comprises the following steps: carrying out fermentation culture on genetically engineered bacteria containing thermal-stability D-psicose-3-epimerase to obtain wet thalli, mixing the thalli with egg shells and a diatomite carrier, immobilizing the obtained mixture on the carrier through a cross-linking agent, and carrying out separation, drying and granulation to obtain the immobilized enzyme preparation. According to the invention, the affinity between the immobilized carrier and microorganisms is stronger; the prepared immobilized enzyme preparation is high in mechanical strength and stable in enzyme activity, is used for preparing D-psicose through D-fructose isomerization, and is high in conversion efficiency. Under the condition of 60 DEG C, after the batch reaction is repeated for 10 batches, the conversion rate is still greater than 28%; 700g / L fructose solution is used as a substrate, the reaction is continuously carried out for 31 days, the average conversion rate is 28% or above, and the method has relatively high industrial advantages.

The application discloses a kind of based on neural network's semi-batch reaction thermal behavior identification method, first define thermal behavior label, solve dimensionless mathematical model;Again, extract core numerical features from traditional criterion, and match with NI, TR and QFS thermal behavior to constitute data set;Again, data set is preprocessed, and is divided;Again, the recognition accuracy and generalization ability of different machine learning algorithms to reaction thermal behavior are analyzed and compared, and double-layer BP neural network is selected;Then determine the structure of double-layer BP neural network;Again, the weight and threshold of double-layer BP neural network are optimized using genetic algorithm and bayesian regularization algorithm;Again, confusion matrix is drawn to evaluate the classification performance of double-layer BP neural network;Finally, dimensionless mathematical model and optimized double-layer BP neural network are deployed, simulate and thermal behavior prediction for semi-batch reaction, effectively solve the problem that reaction system thermal behavior identification angle is not comprehensive, with stronger generalization ability and universality.

The invention provides a kilogram-level preparation method of an organic photoelectric conjugated tin reagent, and belongs to the field of organic synthesis and organic photoelectric materials. The method comprises the following steps: in a dry 20L reaction device, dissolving a conjugated thiophene compound in tetrahydrofuran, keeping nitrogen positive pressure protection, dropwise adding a tetrahydrofuran solution of n-butyllithium and a tetrahydrofuran solution of trimethyltin chloride in a low-temperature reaction system, stirring for reaction, after the reaction is completed, standing for phase splitting, collecting an organic phase, drying, and concentrating filtrate to obtain the conjugated thiophene compound. And recrystallizing to obtain the organic photoelectric conjugated tin reagent. According to the method, efficient macro preparation of various conjugated tin reagents can be achieved, 1-1.2 kg of target products can be prepared through single-batch reaction, and the method has the advantages of being high in yield, easy and convenient to operate, low in cost, good in environmental friendliness and the like.

The utility model relates to the technical field of wastewater treatment, in particular to a novel treatment and recycling system for CNC (computer numerical control) machining cleaning wastewater, which comprises a wastewater pretreatment subsystem and a comprehensive wastewater treatment subsystem, the wastewater pretreatment subsystem comprises a wastewater adjusting tank, an air flotation system, a sequencing batch reaction tank and a comprehensive adjusting tank which are connected in sequence; the comprehensive wastewater treatment subsystem comprises a comprehensive regulating tank, an air flotation system, a first reaction tank, a cleaning sedimentation tank, a PH callback tank, an aerobic tank, a biochemical sedimentation tank, an MBR membrane tank, an MBR water producing tank, a security filter, an RO system, a concentrated water collecting tank, a desalination reaction tank and a concentrated water sedimentation tank which are connected in sequence. The utility model aims to provide a novel treatment and recycling system for CNC (computer numerical control) machining cleaning wastewater, which adopts classified collection and corresponding pretreatment for special wastewater, so that the load of a subsequent wastewater treatment process is reduced, and the treatment efficiency is improved.

Systems and methods are provided for treating, degrading, and incinerating fluorocarbons or fluorinated materials, such as Freon ® with reduced gaseous perfluorinated compound (PFC) emissions. The methods include mixing a fluorinated material with a hydroxide base and optionally a solvent system (e.g., diglyme, polyether, polyether alcohol, polyethylene glycol selected from ethylene glycol and PEG 50 to PEG 3350, N-methyl pyrrolidine, dihydrolevogluton, and / or water ("solvent")) in a batch reactor to form a reaction mixture (also referred to as a suspension). The reaction mixture is heated to a temperature in the range of about 25 °C to about 400 °C for about 0.5 hours to about 240 hours to defluorinate the fluorinated material and produce a defluorinated waste product. More specifically, the methods convert organic fluorine present in the fluorinated material, such as Freon ® to inorganic fluorides. As a result, the defluorinated waste product can be incinerated with reduced harmful gaseous PFC emissions.

The utility model provides a treatment device for recovering copper from electrolytic copper waste liquid, and belongs to the technical field of electrolytic copper waste liquid treatment. Comprising a first adjusting tank, a replacement sequencing batch reaction tank, a plate-and-frame filter press and a second adjusting tank, the copper-containing waste liquid enters the first adjusting tank for aeration treatment and then enters the replacement sequencing batch reaction tank through a pipeline to react with iron powder, and copper-containing sludge generated after the reaction is pumped into the plate-and-frame filter press through a sludge pump for solid-liquid separation. Through the arrangement of the stirring mechanism, the flow guide cover drives the flow guide plate to reciprocate in the aeration process, so that bubbles and waste liquid pass through the flow guide plate in the flow guide cover, the bubbles are better dispersed in the waste liquid through the flow guide plate, the contact area of oxygen in the bubbles and the waste liquid is increased, and the oxidation reaction efficiency in the waste liquid is improved; meanwhile, the water flow can turn over upwards after passing through the guide plate, so that the waste liquid is in full contact with air, the oxidation reaction efficiency in the waste liquid is further improved, and the aeration effect on the waste liquid is improved.

The invention discloses a production and preparation optimization method and system for a rubber vulcanization accelerator, and relates to the technical field of production control. The method comprises the following steps: determining a rubber vulcanization system according to vulcanization requirements, and matching and determining the characteristics of an accelerant; according to the characteristics of the accelerant, carrying out optimization decision-making on a compatibility mode and process stage reconstruction, and determining a reconstruction production process; along with the start of production line processing, a reconstruction production process is triggered, micro-fluidic stage control is executed through micro-control cooperation and dynamic combination switching based on an intermittent reaction process, and in-situ separation and purification control is executed through first-order physical screening based on a molecular sieve membrane micro-channel and second-order virtual screening based on a descriptor; and the digital optimization processing control of the accelerant is carried out based on the judgment distribution of the packaging production line and the feedback processing production line. The technical problems of low production efficiency and unstable quality of the rubber vulcanization accelerator in the prior art are solved, and the technical effect of improving the production efficiency and quality is achieved.

The present application provides are a tire recycling method, a storage medium, an electronic device, and a computer product program. The tire recycling method comprises: acquiring and pre-treating waste tires to obtain waste to be recycled; adding a first set amount of the waste material to be recycled, a first set concentration of a solvent, a second set amount of a functional compound, and a third set amount of a catalyst to a batch reaction kettle and performing a chemical reaction under first set condition to obtain a first product system; and carrying out post-treatment on the first product system to obtain a product, wherein the first set condition comprises: a reaction time of 1 to 6 hours and a reaction temperature of 80ºC to 120ºC, so as to solve the problem in the prior art that it is difficult to use vulcanized rubber as a raw material for a high-performance rubber product due to the breakage of rubber molecular chains and the expansion of the molecular weight distribution after desulfurization.

The invention discloses an immobilized recombinant whole-cell catalyst and a method for preparing gamma-cyclodextrin from the immobilized recombinant whole-cell catalyst. The recombinant whole-cell catalyst is prepared by immobilizing recombinant genetically engineered bacterium whole-cells for expressing a high-selectivity gamma-cyclodextrin glucosyltransferase mutant (the amino acid sequence is as shown in SEQ ID NO: 2) in a calcium alginate carrier matrix through an embedding method. The invention also provides a preparation method of the catalyst and application of the catalyst in preparation of gamma-cyclodextrin by catalyzing starch conversion in multi-batch reaction. The immobilized whole-cell catalyst is simple in preparation process and low in cost, has the high enzyme activity utilization rate of free whole cells and the excellent operation stability of immobilized enzyme, the enzyme activity retention rate is still 85% or above after the immobilized whole-cell catalyst is repeatedly used for 8 times at the temperature of 60 DEG C, and the proportion of a gamma-cyclodextrin product can be kept not lower than 96%.

The present invention relates to a process for treating an aqueous fluid comprising a biodegradable organic substance the process comprising - a bioreactor unit batch feeding stage, wherein the aqueous fluid that is to be treated is fed into a bioreactor unit; - a batch reaction stage, wherein the aqueous fluid is microbiologically treated and biogas is produced in the bioreactor unit; - a degassing unit feeding stage, wherein an aqueous suspension comprising microbiologically treated aqueous fluid and biomass is withdrawn from the bioreactor unit and fed batch-wise into a degassing unit; and - a semi-continuous biomass separator unit feeding stage, wherein the degassed aqueous suspension is withdrawn from the batch degassing unit and fed into a biomass separator.

The utility model provides a standard solution adding, lifting, storing and processing device which comprises a hollow shell, a standard solution adding opening and a connecting opening are formed in a top plate of the shell, a standard solution lifting assembly is arranged in the connecting opening, and a standard solution cleaning opening is formed in the bottom of the side face of the shell. Detachable sealing covers are respectively arranged on the standard solution adding opening and the standard solution cleaning opening. When in use, the treatment device is connected with a full-automatic Kjeldahl apparatus to provide sufficient standard solutions for the inspection process, so that the probability of inspection result distortion caused by incomplete single-batch reaction process due to small storage capacity of the standard solutions is reduced, and the inspection accuracy is improved; meanwhile, frequent liquid adding is avoided, the labor intensity is reduced, and the production efficiency is improved.

The invention discloses a continuous reaction system and method for co-producing solid and liquid sodium ethyl xanthate, and relates to the technical field of sodium ethyl xanthate production. The system comprises a reaction kettle, a stirring motor, a raw material discharging pipe, an alkali liquor discharging pipe, a discharging pipe, a circulating liquid outlet pipeline, a centrifugal machine, a drying machine, a xanthate storage tank, a plurality of groups of control valves and a plurality of groups of backflow pipelines, which form a closed-loop reaction and separation system. The method comprises the following steps: feeding ethanol, carbon disulfide and caustic soda liquid with the concentration of more than or equal to 40% according to a molar ratio of 1: (0.9-1.2): (1.0-1.2), carrying out an initial reaction at 30-36 DEG C for 2.5-4.5 h, carrying out circulating separation, mother liquor recycling and continuous alkali supplementation to realize continuous production, and simultaneously producing liquid sodium ethyl xanthate and solid xanthate obtained by drying at 40-60 DEG C for 0.5-2.5 h. According to the method, reaction balance is promoted through high-concentration alkali, the raw material conversion rate is increased, the problem of solid precipitation is solved through the process of reaction-separation-recycling, product diversification is achieved, batch reaction is upgraded to continuous production, the productivity and stability are improved, and different market requirements are met.

The utility model provides a sequencing batch rural domestic sewage treatment device which comprises a tank body provided with a pre-reaction area and a main reaction area, a water inlet pipe is arranged at the upper part of the pre-reaction area, biological stuffing is arranged in the middle of the pre-reaction area, and the bottom of the pre-reaction area is communicated with the main reaction area through a water passing hole; a biological filler is arranged in the middle of the main reaction zone, an aeration device is arranged at the bottom, and sludge in the main reaction zone flows back to the pre-reaction zone through a sludge return pipe and gas stripping of the autonomous reaction zone; the main reaction zone is provided with a drain pipe for gas stripping drainage; the rural domestic sewage treatment device is simple in treatment process flow and small in occupied area and volume, the problem of intermittent discharge of rural domestic sewage can be well solved through sequencing batch reaction, and the rural domestic sewage can be efficiently and stably treated.

The invention belongs to the technical field of biological catalysis, and particularly relates to an anchor peptide mediated fusion protein and an immobilized enzyme biofilm reactor, the fusion protein comprises a functional enzyme protein and an anchor peptide mutant; the anchoring peptide mutant is obtained by mutating proline at the fifth position of an amino acid sequence as shown in SEQ ID No.2 into valine; the functional enzyme protein is nicotinamide ribokinase or polyphosphate kinase. The functional enzyme protein and the anchoring peptide mutant are connected by using the connecting peptide, and then the obtained fusion protein is anchored on the polypropylene hollow fiber membrane wire material, so that the obtained fusion protein has good anchoring effect and catalytic activity, the batch reaction yield stability can be obviously improved, and the preparation method is suitable for industrial production. An immobilized enzyme bio-membrane reactor is designed, and nicotinamide mononucleotide can be synthesized through biological catalysis.

The present invention relates to a method for preparing bio-based adipic acid. In the method, by using a nickel-based hydrogenation catalyst provided by the present invention, when the concentration of a substrate reaches up to 200 g / L, the reaction of bio-based sodium muconate with hydrogen is catalyzed in a batch reactor and a micro-packed bed to prepare sodium adipate, the yield of the target product being approximately 100 mol%. The bio-based sodium muconate is bio-based sodium muconate obtained by microbial fermentation. The method has the advantages of a short reaction path, good economical efficiency and being conducive to large-scale preparation, and lays a solid foundation for the industrialization of the green synthesis of bio-based adipic acid.

The invention discloses a method for preparing 9, 9-bis (3, 4-dicarboxyphenyl) fluorene dianhydride, which specifically comprises the following steps: S1, adding 9-fluorenone and o-xylene into a reaction kettle; S2, adding sulfuric acid and stirring; s3, cleaning is conducted; s4, preparing an intermediate 1; s5, stirring the raw materials until the raw materials are dissolved and clarified, cooling to room temperature without solid precipitation, and transferring to a continuous flow section; s6, carrying out continuous flow reaction treatment; and S7, adding acetic anhydride, filtering, and drying to obtain the 9, 9-bis (3, 4-dicarboxyphenyl) fluorene dianhydride. The invention relates to the technical field of catalyst preparation. According to the method for preparing 9, 9-bis (3, 4-dicarboxyphenyl) fluorene dianhydride, a continuous flow SK mixer is adopted to more fully realize gas-liquid mixing, so that the reaction rate is increased, the area of a continuous flow reaction unit is small, the risk in the industrialization process is reduced, continuous production is realized, and the problems of high safety risk, low productivity and the like of an intermittent reaction kettle are solved.

The invention discloses a method and system for automatically adding aluminum powder in an alumina fiber glue making process, and the method comprises the steps: obtaining whole-process monitoring data of historical high-quality production batches, and constructing a high-quality production process track library associated with different production qualities; and based on the state of the reaction kettle of the current batch and raw material information, matching an ideal optimal production track in a track library, and constructing a multi-modal production situation feature fusing the statistical feature and the association relationship according to real-time monitoring data. The future migration trend is deduced through deviation analysis of the real-time production situation trajectory and the ideal trajectory. And constructing a differential game model between the aluminum powder feeding and reaction situations, and solving Nash equilibrium to obtain a global feeding plan sequence so as to realize self-adaptive closed-loop feeding control of the aluminum powder. And after the production is finished, the batch data meeting the standard is used for enhancing the process track library. Intelligent dynamic regulation and control of complex glue making reaction are achieved, and the product quality stability and the process self-adaptive capacity are improved.

The invention discloses 5-hydroxymethylfurfural and a preparation method thereof. The method comprises the following steps: mixing fructose, inorganic salt, an acid catalyst, an organic solvent and water, and using a multi-kettle tandem reaction device to obtain the 5-hydroxymethylfurfural, the inorganic salt is selected from at least one of halogen compounds, borides, silicate, aluminate, borate and phosphate; the acidic catalyst comprises at least one of water-soluble acids; the organic solvent is selected from at least one of acetonitrile, tetrahydrofuran, 2-methyltetrahydrofuran, methyl isobutyl ketone, dimethyl carbonate, ethyl acetate and ethylene glycol. According to the present invention, the specific inorganic salt and the specific acid catalyst are added, the reaction is performed under the multi-kettle series connection, the synergistic effect can be achieved, and the production efficiency and the conversion rate of the reaction can be effectively improved compared with the traditional batch-type reaction.

The utility model provides a combined nickel plating waste liquid treatment device, and belongs to the technical field of nickel plating waste liquid treatment. Comprising an electrolytic bath, a waste gas tower, a collecting tank, an adjusting tank, a sequencing batch reaction tank I, a plate-and-frame filter press and a sequencing batch reaction tank II, the electrolytic bath is communicated with the waste gas tower through a pipeline, the waste gas tower is communicated with the collecting tank through a pipeline, and the collecting tank is respectively communicated with the sequencing batch reaction tank I and the sequencing batch reaction tank II through pipelines. According to the device disclosed by the utility model, through the arrangement of the spiral conveyor and the driving lever, medicine powder enters the spiral conveyor through the storage tank and then is scattered into the sequencing batch reaction tank I from the blanking hole and the strip-shaped groove, and the stirring shaft drives the stirrer to slowly stir wastewater in the sequencing batch reaction tank I; in the process that the stirring shaft drives the driving lever to rotate, the driving lever drives the spiral conveyor to rotate, so that the dispersion area of the medicine powder is further increased, the medicine powder can be sufficiently dissolved in the wastewater, the stirring time for mixing the wastewater and the medicine powder is shortened, and the reaction efficiency is improved.

The invention relates to the technical field of organic synthesis, and particularly discloses a continuous flow synthesis method of bis (2-hydroxyethylthio-2-hydroxy propyl) sulfide, which comprises the following steps: reacting mercaptoethanol, a catalyst and epichlorohydrin in a first-section tubular reactor to generate 3-chloro-2-hydroxy propyl (2-hydroxy ethyl) sulfide; and then reacting with a metal sulfide aqueous solution subjected to recrystallization pretreatment in a second-section tubular reactor to obtain a target product. According to the method provided by the invention, the continuous flow is adopted for reaction, and proper reaction temperature, time and raw materials are screened, so that the problems of more byproducts, low yield, poor safety and the like of the traditional batch-type reaction kettle are solved, the product purity reaches 98% or above, the yield exceeds 95%, no organic solvent is used, the energy consumption is low, and the method is suitable for industrial large-scale production.

The invention discloses an efficient continuous flow kettle type module reaction device which comprises N standard kettle type modules which are connected in series in a multi-stage manner, the standard kettle type module comprises a metering kettle, a condenser and a stirring kettle, and the stirring kettle is a full backmixing flow reactor; materials of the upper-stage standard kettle type module are transferred to the lower-stage standard kettle type module to form a continuously flowing plug flow on the flow model; an intermittent reaction is adopted in each standard kettle type module; the completion of one intermittent reaction is combined with the material transfer of one plug flow to form a pulse period. The invention has the following beneficial effects: firstly, intermittent pulse operation is adopted in a multi-kettle series reactor, that is, a flow model is continuous series full backmixing, a reaction process is periodic intermittent operation, and a pulse mode combining intermittent operation and continuous flow is adopted, so that materials are fully reacted in each kettle and then pulse to the next stage;

The application discloses a method for preparing adipic acid by using a micro-channel reactor, which comprises the following steps: taking cyclohexane containing an initiator and oxygen-containing gas as raw materials, and adding the raw materials into the micro-channel reactor to generate adipic acid through an oxidation reaction; wherein the initiator comprises a cyclohexyl functional group-containing free radical and a peroxide. The application proposes a new method for preparing adipic acid by using the micro-channel reactor, which takes cyclohexane containing an initiator and oxygen-containing gas as raw materials, and generates adipic acid through preheating, mixing, reaction, post-treatment and circulation in a short time of ten seconds to several minutes. The process of the application is a continuous reaction from feeding, preheating, mixing and oxidation reaction, and compared with a batch reaction, the process can greatly improve the conversion rate of cyclohexane, the selectivity of adipic acid and the production efficiency, effectively improve the safety of the oxidation reaction process, and can be used for industrial production.

The invention discloses a method for preparing an aromatic aldehyde compound mainly containing vanillin by catalyzing high-selectivity oxidative depolymerization of lignin through a continuous high-pressure reaction system, which comprises the following steps: adopting a screw-type continuous reactor and one catalyst of copper chloride, ferric chloride, nickel chloride, manganese chloride and cobalt chloride, and controlling proper material retention time; the aldehyde product selectivity is excellent and is far superior to the aldehyde selectivity level of the traditional batch reaction, and the problems of uncontrollable product distribution and low target product proportion in the traditional technology are effectively solved.