66 results about "Batch reaction" patented technology

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 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 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 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 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 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.

The utility model discloses a chemical industry burden uses reation kettle of convenient mixing, belongs to reation kettle equipment field, it includes reation kettle body, the reation kettle body top is provided with motor, motor output end penetrates reation kettle body and has the coaxial fixed connection of A bevel gear, the coaxial fixed connection of A bevel gear has A rotating shaft, and B bevel gear is rotatably connected to A rotating shaft, and B bevel gear lower end fixedly connected with B sleeve shaft. The utility model discloses the combination drive of A bevel gear, B bevel gear and C bevel gear has realized the reverse rotation of A rotating shaft and B sleeve shaft, makes A stirring vane and B stirring vane form the convection shear field, breaks the flow limitation of traditional one -way stirring, and the turbulence degree of material mixing and micro -homogeneity are improved greatly, when disc drive gear rolls along the inner tooth ring, and spiral blade not only produces axial material delivery, further realizes sufficient mixing, and simultaneously also drives the scraping board to slide closely the inner wall of kettle body.

Composition for multi-purpose cleaning wherein said composition comprises a product of: (a) one or more amine oxide-based surfactant; and (b) one or more glycerol ketal derivative. Process for preparing said product, wherein the process comprises the product of one or more amine oxide with one or more glycerol ketal derivative as solvent under stream of carbon dioxide and addition of peroxide oxide under semi-batch or batch reaction. Use of said composition, wherein the composition is used for preparing multi-purpose cleaning products, detergents, homecare or industrial cleaning products, washing products, as base preparations for homecare cleaning products and as base preparations for industrial cleaning products.

The invention discloses a continuous catalysis system and method for synthesizing methylhydrazine, and relates to the technical field of methylhydrazine synthesis. Comprising the following steps: mixing hydrazine hydrochloride with pure water, heating in a water bath, and stirring until solids are completely dissolved to form a clear and transparent solution to obtain a methanol catalytic solution; the hydrazine hydrochloride raw material liquid and the methanol catalytic liquid are synchronously conveyed to a continuous reaction device with a microchannel connected with a subsequent reaction section in series, and a continuous catalytic alkylation reaction is completed; the method comprises the following steps: removing methanol from reaction discharge liquid through normal-pressure distillation, recovering, adding caustic soda liquid into residual liquid, stirring, standing for layering, taking an organic phase, carrying out reduced-pressure rectification, collecting a target fraction to obtain a methylhydrazine product, and carrying out gradient heating and precise pressure regulating technologies to realize stable control of reaction pressure. The small-volume continuous flow design is used for replacing the traditional large-volume intermittent kettle reaction, so that the core problems of prominent high-pressure risk and high danger coefficient of the traditional process are solved, and the intrinsic safety level of methylhydrazine synthesis is improved.

The invention discloses a device and a process for continuously synthesizing electronic-grade methyldiethoxysilane and co-producing hydrogen chloride. An outlet of an n-hexane raw material tank is connected with an inlet of a methyldichlorosilane raw material tank through a pipeline; an outlet of the methyl dichlorosilane raw material tank is connected with a first feeding hole of the intermittent reactor; an outlet of the ethanol raw material tank is connected with a second feeding hole of the intermittent reactor through a pipeline; a gas phase outlet of the intermittent reactor is connected with an inlet of the light component collecting tank through a pipeline; a liquid phase outlet of the intermittent reactor is sequentially connected with a solvent removal tower, a light component removal tower and a heavy component removal tower through pipelines; and a tower top outlet of the heavy component removal tower is connected with an electronic-grade methyldiethoxysilane product tank. According to the method, the good yield of electronic-grade products can be guaranteed, in addition, online organic component analysis is carried out on the materials obtained after two times of rectification, it can be fully guaranteed that the organic purity of the materials is maintained to be 99.9% or above, the total metal content is 50 ppb or below, and finally electronic-grade qualified products are obtained.

The invention provides a high-density spherical LiCoO2 positive electrode material and a continuous preparation method thereof.According to the continuous preparation method, continuous preparation of a spherical Co (OH) 2 precursor and in-situ coating of Li2CO3 are achieved through a double-section tubular reactor, and subsequent continuous drying and continuous high-temperature sintering are combined, so that the high-density spherical LiCoO2 positive electrode material is obtained. A whole-process continuous process of precursor preparation, coating and sintering is constructed, and traditional batch reaction kettle operation is effectively replaced. According to the continuous preparation method, the spherical product can be continuously and stably produced, the high-density characteristic of the product is guaranteed, frequent starting and stopping of intermittent production can be avoided, and the production efficiency is improved; meanwhile, the stability of reaction conditions is ensured through precise segmented gradient temperature control, the product performance is favorably optimized, manual intervention can be reduced and the vacancy rate of equipment is reduced due to full-process continuity, the production cost and the energy consumption are reduced while the product consistency is improved, and the preparation method is obviously superior to a traditional batch preparation process.

A granule forming method according to the present disclosure uses a semi-batch reaction tank (10) that forms granules by performing: an inflow step for causing organic matter-containing wastewater to flow in; a biological treatment step for biologically treating a substance to be treated in the organic matter-containing wastewater with microbial sludge under aerobic conditions; a precipitation step for precipitating the microbial sludge; and a discharge step for discharging the biologically treated water that has been biologically treated. In the biological treatment step, the dissolved oxygen concentration in the semi-batch reaction tank (10) is monitored, and the time of the biological treatment step is adjusted on the basis of information relating to the monitored dissolved oxygen concentration.

The application discloses a production preparation optimization method and system for rubber vulcanization accelerators, 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 accelerator characteristics; making optimization decisions on compatibility mode and process stage reconstruction according to the accelerator characteristics, and determining a reconstructed production process; triggering the reconstructed production process as the production line processing starts, and performing microflow stage control based on micro-control cooperation and dynamic combination switching based on intermittent reaction progress, performing in-situ separation and purification control based on first-order physical screening based on a molecular sieve membrane microchannel and second-order virtual screening based on a descriptor, and performing control of digital optimization processing of the accelerators based on judgment shunting of a packaging production line and a feedback processing production line. The technical problems of low production efficiency and unstable quality of rubber vulcanization accelerators in the prior art are solved, and the technical effects of improving production efficiency and quality are achieved.

This water treatment method involves repeating, in a semi-batch reaction tank, an operation cycle including: an inflow step in which water to be treated containing a substance to be treated flows in; a biological treatment step for biologically treating, with a microbial sludge, the substance to be treated in the water to be treated; a sludge discharge step for discharging the microbial sludge; a sedimentation step for sedimenting the microbial sludge; and a treated water discharge step for discharging the biologically treated water obtained by the biological treatment step, the water treatment method being characterized in that whether the sludge discharge step is executed or not and / or the execution time is determined on the basis of the execution time of the biological treatment step or the accumulated time obtained by accumulating eutrophic state times from the start of the biological treatment step until the concentration of the substance to be treated in the water to be treated is reduced to a predetermined value.

The present invention relates to a method for producing a thermally inhibited starch, the method comprising providing a volume of dehydrated starch having a pH value between 7.0 and 11 and having a moisture content of <2 wt. %, based on the weight of the starch, in a stirred batch reactor, said reactor being comprised with a gas inlet, and applying a flow of gas through the volume of dehydrated starch in the reactor while heating and stirring the starch to a temperature of at least 140° C. for a period of time sufficient to thermally inhibit the starch. In addition, the invention relates to a device for thermally inhibiting starch and use of a flow of gas in a stirred batch reactor during thermal inhibition of starch.