63 results about "Green production" patented technology

The application provides a kind of sodium sulfide nine hydrate and activated olefin / acetylene preparation polyether and its method, belong to sulfur-containing polymer technical field.The structural formula of polyether in the application, R 1 And R 2 Independently be substituted or unsubstituted alkyl, substituted or unsubstituted alkoxy, substituted or unsubstituted aryl, substituted or unsubstituted heteroaryl;The number of carbon atoms of the alkyl is 1-10, the number of carbon atoms of alkoxy is 1-10, the number of carbon atoms of aryl is 1-30, the number of carbon atoms of heteroaryl is 3-30;Substituted alkyl and substituted alkoxy independently are one or more;N is an integer of 2-4000.The application is used as sulfur source sodium sulfide nine hydrate, under the condition of no metal catalyst, polyether is synthesized by polymerization reaction;Reaction condition is mild, reaction is efficient, economic and environmental protection, meet the current green production concept and can avoid the use of dangerous reagent.

This invention relates to a method for preparing the fenelone intermediate 2-cyanoethyl(4S)-4-(4-cyano-2-methoxyphenyl)-5-ethoxy-2,8-dimethyl-1,4-dihydro-1,6-naphthidine-3-carboxylic acid ester, and also relates to diastereomeric salts (Va), (Vb), (Vc), and / or (Vd). This method is simple to operate, and the diastereomeric salts can be obtained with very high chemical and enantiomeric purity (tartrate ester content <0.05%) through a single dissociation, avoiding the raw material loss and waste problems caused by multiple dissociations. It also has low production costs and meets the requirements of green production.

This invention provides a method for producing vitamin B12 using microchannel reaction technology. The method involves acidifying, hydrolyzing, filtering, and analyzing the vitamin B12 fermentation broth, followed by a cyanidation reaction in a microchannel reactor. Further filtration, analysis, and concentration yield vitamin B12. This method produces cyanide-treated vitamin B12 with a thorough conversion reaction and increased yield. It also reduces the amount of cyanide used, thus reducing pollution and costs. The equipment has good airtightness, and the small amount of hydrogen cyanide gas generated is completely recovered and centrally treated, greatly reducing harm to the environment and human health. This method is environmentally friendly and contributes to green production.

This invention relates to the field of agricultural environment and soil fertilizer technology, and in particular to a method for increasing paddy field yield and reducing N2O emissions by regulating the application rate of zero-valent iron. The method includes the following steps: at the early tillering stage of rice, zero-valent iron is mixed with tillering fertilizer and applied to the paddy field soil; the application rate of zero-valent iron is 20-50 mg / kg (dry soil basis). ‑1 The method involves applying booting fertilizer to the paddy soil during the early booting stage of rice, and irrigating throughout the entire rice growth cycle. This invention, by applying an appropriate amount of zero-valent iron in a single application on top of conventional fertilizer application, can synergistically achieve greenhouse gas emission reduction and increased grain yield, providing a feasible path for green production in paddy fields.

This invention provides a continuous method for preparing vitamin E succinate polyethylene glycol ester (TPGS). It uses a strongly acidic cation exchange resin (such as the Amberlyst series) or a perfluorosulfonic acid resin (such as the Nafion series) as a heterogeneous catalyst, which is packed in a fixed bed to catalyze the esterification reaction between vitamin E succinate and polyethylene glycol. This method achieves precise proportioning of reactants, instantaneous mixing, isothermal reaction, and online dehydration, reducing the reaction time from several hours required by existing batch methods to tens of minutes. It allows for long-term stable use, requires no complex post-processing, and produces products with high yield, good purity, and light color. The preparation method of this invention solves the problems of difficult catalyst recovery, excessive waste, low efficiency, and unstable product quality in existing methods, making it particularly suitable for large-scale, continuous, and green production of TPGS.

The application provides proline dehydrogenase, genes and mutants and applications thereof. The enzyme is derived from Pseudomonas xantholysinigenes and is recombinantly expressed in Escherichia coli. The target gene is codon-optimized when constructing a plasmid. The optimized DNA sequence is shown in SEQ ID NO. 2. The proline dehydrogenase is subjected to mutation modification. The enzyme and the mutants thereof can be used for efficiently catalyzing L-proline degradation to complete biological resolution of DL-proline, and high-purity D-proline is obtained. The application has great economic value in the field of green production of D-proline.

This invention relates to a method for preparing (4S)-4-(4-cyano-2-methoxyphenyl)-5-ethoxy-2,8-dimethyl-1,4-dihydro-1,6-naphthidine-3-carboxylic acid, and also to diastereomeric salts (Va), (Vb), (Vc), and / or (Vd). This method is simple to operate, and the diastereomeric salts can be obtained with very high chemical and enantiomeric purity (tartrate ester content <0.05%) through a single dissociation, avoiding the raw material loss and waste problems caused by multiple dissociations. It also has low production costs and meets the requirements of green production.

The present application relates to the technical field of biotechnology, and particularly relates to a tagatose-6-phosphate phosphatase mutant and a method for synthesizing tagatose from scratch. The method provided by the present application is a one-pot method for biosynthesizing D-tagatose by using starch or dextrin as a substrate, adopting a multi-enzyme cascade reaction system composed of a tagatose-6-phosphate phosphatase mutant, a glycogen-debranching enzyme, an alpha-glucan phosphorylase, a phosphoglucomutase, a glucose-6-phosphate isomerase, a D-tagatose-6-phosphate-3-epimerase and a 4-alpha-glucan transferase. The method can prepare tagatose from ordinary and inexpensive starting materials (starch or dextrin) at a high yield, improves the overall conversion rate of the system and the final yield of tagatose, provides a new technical approach for realizing low-cost and green production of tagatose, and has the advantages of high yield, low cost and being more suitable for industrial production.

This invention discloses a biphasic combined Lewis acid hydrolysis method for extracting diosgenin from fenugreek, belonging to the field of natural product extraction technology. The extraction method disclosed in this invention includes: defatting fenugreek raw material, mixing it with a biphasic reaction system composed of Lewis acid, concentrated hydrochloric acid, methanol, water, and petroleum ether, and carrying out a hydrolysis reaction under heating conditions. After the reaction, the organic phase is separated, concentrated, and dried to obtain diosgenin. This invention innovatively introduces a Lewis acid catalyst into the biphasic acid hydrolysis system of fenugreek, achieving significant results such as a 25% reduction in reaction time, a 50% reduction in concentrated hydrochloric acid usage, and a 25% reduction in water usage while ensuring the extraction rate of diosgenin. This method has advantages such as mild conditions, low acid consumption, short processing time, and environmental friendliness, and is suitable for the large-scale green production of diosgenin.

This invention discloses an ultra-small size copper nanoparticle powder and a green and controllable synthesis method. This invention pioneers a novel reaction pathway combining "one-step direct reduction with alkaline ascorbic acid" with three-stage programmed temperature control. By precisely controlling the reaction temperature and rate from monomer formation to nucleation and final growth stages, it achieves the green and controllable synthesis of ultra-small size copper nanoparticle powder with an average particle size of less than 80 nanometers. This invention eliminates the need for a secondary reducing agent such as ferrous sulfate, resulting in a simpler process that meets green production requirements, reduces environmental treatment costs, and offers strong controllability, making it suitable for large-scale industrial production. The prepared copper powder has a metal-based purity of ≥99.9%, high sintering activity, and a sintering temperature 30-80℃ lower than conventional copper powder. It has significant application value in high-density PCB interconnects, third-generation semiconductor packaging, high-precision 3D printing, photovoltaic pastes, flexible displays, and wearable devices.

This invention discloses a method and apparatus for producing selenium-enriched liquid fertilizer using invasive organisms and agricultural waste. The method involves mixing the invasive organism *Alternanthera philoxeroides* and agricultural waste rice straw in a specific ratio, then using the invasive animal *Pomacea canaliculata* to biotransform the mixture. Different forms of selenium source are added to the biotransformation residue, and selenium-enriched liquid fertilizer is prepared using an aerobic liquid composting fermentation method. The composting apparatus consists of a composting bin, an automatic oxygen supply mechanism, and an intelligent temperature control mechanism, enabling fully automated management, simple operation, and no cumbersome setup. It is suitable for the efficient production of selenium-enriched liquid compost. This invention not only provides a new approach for the green production of selenium-enriched liquid compost from invasive organisms and agricultural waste, but also provides a new technology of "high-temperature composting, nutrient enrichment, and low-carbon environmental protection," realizing the resource utilization of invasive organisms and agricultural waste by converting them into selenium-enriched liquid compost, turning harm into benefit and waste into treasure.

The present application relates to the field of agricultural planting irrigation technology, in particular to a kind of citrus water-saving cultivation method based on green production.The method obtains root system spatial distribution dielectric constant matrix through multi-channel time domain reflection sensor array, obtains wet body three-dimensional volume data through soil moisture dielectric sensor;Establish the infiltration model with drip irrigation working pressure and pulse duration as independent variables;Root system spatial distribution dielectric constant matrix and wet body three-dimensional volume data are calculated by spatial overlap rate, when the overlap rate of specific depth soil layer is lower than the preset threshold, the working pressure and pulse width of corresponding depth drip irrigation pipe are calculated and adjusted according to the infiltration model, so that the wetting front migration trajectory and high-density root system distribution space coincide.The present application eliminates the spatial misplacement of fixed wet body and irregular root system distribution, reduces the non-root area invalid water infiltration and deep seepage.

This invention relates to a method for preparing the fenelone intermediate 2-cyanoethyl (4S)-4-(4-cyano-2-methoxyphenyl)-5-hydroxy-2,8-dimethyl-1,4-dihydro-1,6-naphthidine-3-carboxylic acid ester, and also relates to diastereomeric salts (Va), (Vb), (Vc), and / or (Vd). This method is simple to operate, and the diastereomeric salts can be obtained with very high chemical and enantiomeric purity (tartrate ester content <0.05%) through a single dissociation, avoiding the raw material loss and waste problems caused by multiple dissociations. It also has low production costs and meets the requirements of green production.

This invention discloses an apparatus and method for synthesizing ethylene carbonate (EC) from CO2 and propionic acid (a bio-waste), belonging to the fields of electrochemical synthesis and CO2 resource utilization. The invention designs a bipolar ethylene-producing unit electrolytic cell and an air-flotation cyclic electrolytic unit electrolytic cell. This invention achieves the coupling of anode propionic acid (a waste acid from biorefining) decarboxylation and cathode CO2 reduction, simultaneously converting the two wastes into C2H4 at ambient temperature and pressure. Furthermore, using C2H4 and CO2 as raw materials, high-efficiency synthesis of ethylene carbonate (EC) can be achieved in a membrane-free electrolytic cell. This invention relies on renewable electrical energy, uses green raw materials, and enables the resource utilization of biomass waste propionic acid and CO2. Combined with the carbon-neutral potential of the cascade route, it provides a feasible solution for the industrial-scale green production of EC.

This utility model relates to the field of cutting and slitting machine technology, and provides a cutting and slitting machine for paper product processing, including: a worktable; equally spaced cutting parts, disposed above the worktable, with adjustment components at both ends of the cutting parts; a dust removal component disposed on the back of the equally spaced cutting parts; dust removal auxiliary components disposed on the left and right sides of the worktable; and a waste collection box movably disposed in a cavity inside the worktable. This utility model, through the synergy of the dust removal component and auxiliary components, forms a three-dimensional dust removal system. The suction box and suction wheel quickly adsorb dust, multi-stage filters and filter cotton provide fine filtration, and atomizing nozzles assist in dust settling, thoroughly solving the problem of incomplete dust removal in traditional equipment. At the same time, the sealed dust collection and filtration system prevents secondary dust re-entrainment during cleaning, reducing the risk of occupational diseases for workers, protecting their health, and meeting the requirements of green production.

This application relates to the field of smelting furnaces and discloses a smelting furnace for the green production of high-performance alloys. The furnace includes a smelting furnace with stirring blades and a rotating assembly for driving the stirring blades. A feed inlet is located at the top of the furnace, and a sealing cover is installed on the feed inlet. A heat collection box is fixedly installed outside the furnace. This application constructs a waste heat recovery system by fixing a heat collection box outside the furnace, in conjunction with a first filter box, a second filter box, and curved heat collection tubes. Waste heat generated during the smelting process first enters the first filter box for preliminary filtration to remove some impurities and particulate matter. Then, it enters the heat collection box through the curved heat collection tubes. The curved heat collection tube design increases the residence time and heat exchange area of ​​the waste heat within the heat collection box, allowing for more thorough heat exchange with the heat exchange medium inside the heat collection box. This achieves efficient waste heat recovery, effectively improves energy utilization efficiency, and reduces the production cost of high-performance alloys.

This invention discloses the establishment and application of a method for melanin synthesis using *Escherichia coli*, belonging to the fields of genetic engineering, enzyme engineering, and biocatalysis. The invention involves the artificial synthesis of a target gene, the sequence of which is shown in SEQ ID NO:1. Based on this gene sequence, a recombinant vector pCDFDuet-1-melC is constructed and transformed into *E. coli* BL21(DE3) to obtain a recombinant genetically engineered bacterium. A whole-cell catalytic system is then constructed based on this recombinant genetically engineered bacterium for melanin synthesis, achieving a melanin yield of 7.46 g / L. This recombinant genetically engineered bacterium possesses advantages such as high catalytic activity and easy heterologous expression, providing a new pathway for the industrial-scale green production of melanin. The enzyme prepared from this recombinant genetically engineered bacterium exhibits the characteristics of tyrosinase and requires low concentrations of Cu. 2+ It can significantly activate enzyme activity.

This invention belongs to the field of ketoxime synthesis technology and provides a method for synthesizing 3-pentanone oxime. The method uses 3-pentanone, hydrogen peroxide, and ammonia as raw materials, adds a catalyst, and reacts in a closed system. After the reaction, the mixture is filtered and distilled under reduced pressure to obtain 3-pentanone oxime. The catalyst is a fluorine-modified Ti-MOR molecular sieve, obtained by reacting the Ti-MOR molecular sieve with an NH4F-alcohol solution. The method provided by this invention features high yield, high purity, and low waste, with a single-pass yield ≥96% and purity ≥99.0%. The catalyst can be recycled up to 6 times without significant activity decline. The entire process involves no organic solvent discharge and low salt content in the wastewater, meeting the requirements of green production.

The utility model relates to the field of conveying material, concretely relates to a belt conveyor self -cleaning formula scraping plate, including the machine case, be equipped with the conveying belt on the machine case, be equipped with the reciprocating cleaning mechanism in the machine case, one end of conveying belt is equipped with the scraper cleaning brush mechanism, through the reciprocating cleaning mechanism's drum cleaning brush to the reciprocating type cleaning of conveying belt lower surface, cooperate the scraping of the scraper cleaning brush mechanism and the cleaning brush on the upper surface of conveying belt, realize the omnibearing cleaning of belt double -sided, the scraper cleaning brush mechanism collocates the waste box, can collect the material cleaned down in time, avoid the waste scattering and cause secondary pollution, keep the working environment neat, meet the industrial green production requirement, the design of gear drive and positioning kit makes the cleaning mechanism stable operation, effectively reduces the abrasion of belt because of the surface residual material, prolongs the service life of belt, reduces equipment maintenance cost.

This invention discloses a method for separating and purifying 3-hydroxybutyric acid (3-Hydroxybutyric acid) from fermentation broth, relating to the field of 3-Hydroxybutyric acid preparation technology. The method includes the following steps: S1, adjusting the pH of the supernatant of the 3-Hydroxybutyric acid fermentation broth to no higher than 7, adding a decolorizing agent to obtain a decolorized supernatant; S2, passing the decolorized supernatant through an alkaline anion exchange resin for adsorption, rinsing off impurities with water, and then eluting with an inorganic alkaline aqueous solution to collect the eluent; S3, passing the eluent through an acidic resin and collecting the effluent; S4, desalting the effluent. This method is simple, easily scalable, produces low levels of waste, conforms to green production trends, and yields high-purity 3-Hydroxybutyric acid.

This invention provides an apparatus and method for producing isobutyl methacrylate using a novel membrane reactor. The apparatus integrates a tubular fixed-bed reactor with a pervaporation membrane system. A compartmentalized structure maintains the pressure difference across the membrane, and a dual-tube module optimizes the channel spacing to suppress polymerization side reactions. During the reaction, the pervaporation membrane selectively removes the byproduct water, breaking the equilibrium limitation of the esterification reaction and significantly improving the feed conversion rate. Simultaneously, it disrupts the water-isobutanol azeotropic system, reducing subsequent separation energy consumption and achieving integrated reaction and separation processes. This invention solves the problems of equilibrium limitation on conversion rate, high separation energy consumption, and easy polymerization in traditional processes. It features high conversion rate, low energy consumption, and stable operation, making it suitable for the continuous and green production of isobutyl methacrylate.

This invention belongs to the field of fine chemical technology, specifically relating to a method for preparing sodium hydrosulfide using acidic gas. The invention constructs a multi-stage co-current absorption system with progressively decreasing total alkalinity concentration. The product outlet is located at the stage with the lowest total alkalinity, utilizing a low-alkalinity medium to suppress CO2 absorption, reducing the generation of sodium carbonate impurities by more than 67% at the source. Combined with room-temperature chemical precipitation for decarbonization and staged cooling crystallization for impurity removal, the system systematically solves the problem of difficult removal of soluble impurity salts such as CO2, NH3, and sodium thiosulfate. This invention uses industrial sulfur-containing tail gas as raw material, fully utilizing the exothermic reaction between H2S and NaOH to maintain the absorption temperature. Vacuum evaporation utilizes the residual heat from condensation for staged replenishment, achieving efficient sulfur resource recovery and green production. The process is simple, the equipment is mature, and the production line can switch between producing 43% liquid sodium hydrosulfide or over 70% solid sodium hydrosulfide, flexibly adapting to tail gas with different H2S concentrations.

This utility model discloses an integrated green production device for triethyl phosphate, including an installation box. An installation plate is fixedly installed inside the installation box. A positioning frame and a fixing frame are also fixedly installed inside the installation box, located on opposite sides of the installation plate. Three sets of filter screens are installed between the installation plate and the fixing frames. The positioning frame has three symmetrically distributed shaking rods, each located inside one of the three filter screens and in contact with the inner wall of the filter screen. A first spring is sleeved on the positioning frame, and a first cam is rotatably mounted on the positioning frame. The first cam is in contact with the upper end of the shaking rod. Through the first cam on the positioning frame and the spring, the shaking rods, made of elastic metal material, intermittently and regularly expand and shake within the filter screen, thereby causing the filter screen to expand and shake slightly, shaking off impurities and dust adhering to the surface of the filter screen.

The application provides a preparation method of a foundry sand mold binder and an application thereof, and the method comprises the following steps: preparing modified water glass; preparing alkaline phenolic resin; mixing the modified water glass and the alkaline phenolic resin to obtain the foundry sand mold binder; wherein the preparation of the modified water glass comprises the following steps: adding sodium water glass into a stirring kettle, then adding sodium hydroxide to adjust the modulus of the water glass, then adding a modifier solution into the reaction kettle, and uniformly stirring and reacting at a certain temperature to obtain the modified water glass. The modified water glass is introduced into the alkaline phenolic resin, the reaction completeness and the structural compactness are improved while the binding performance is retained, and the requirements of safe production and green production are met.

This invention discloses a method for preparing N-arylpyrazole compounds. Using low-cost arylhydrazine hydrochloride and β-dicarbonyl compounds as raw materials, a cyclization reaction occurs under mild conditions in a eutectic solvent formed by choline chloride and urea, efficiently preparing N-arylpyrazole compounds. This eutectic solvent is characterized by simple preparation, low volatility, and good biocompatibility. After the reaction, water can be evaporated for recovery and recycling, significantly reducing waste emissions and production costs. The method of this invention is simple to operate, requiring no metal catalysts, toxic reagents, or traditional organic solvents, making it environmentally friendly and operator-friendly. It has broad substrate applicability, high product yield, a simple process route, and convenient post-processing, conforming to green chemistry principles and suitable for the batch, large-scale, and green production of pyrazole active pharmaceutical ingredients and intermediates.

The application discloses a plant salt-tolerance promoting active metabolite separated from a rhizosphere growth-promoting Pseudomonas proteus and application thereof. The metabolite is dibutyl phthalate (DBP) with a molecular formula of C 16 H 22 O4, has the effect of improving the salt tolerance of rice, and obviously increases the plant height, root length, aboveground fresh weight and underground fresh weight of the rice, is stable in effect, and has a good application prospect; and can be used as a preparation for improving the salt tolerance of crops in agricultural green production.

The application discloses a green production resource scheduling method for a water conservancy hub construction site based on reinforcement learning, and relates to the technical field of data processing. The method fuses construction resource state data and hydrological forecast data to construct an extended state vector, calculates a three-level hydrological risk grade of safety, early warning and danger based on the hydrological forecast data, and switches between three scheduling modes of normal, acceleration and retreat according to the three-level hydrological risk grade, to determine an optimization target priority and a resource allocation constraint condition. A reward function includes at least a green production index item composed of carbon emission intensity and construction water consumption rate, and a hydrological risk adjustment factor, the target weights are initialized and dynamically adjusted according to the optimization target priority, and the weight of the green production target is not less than a preset green bottom line value. A reinforcement learning intelligent agent trains a green production resource scheduling strategy within the action range defined by the constraint condition, outputs a scheduling scheme after deployment, and returns to re-execution when the deviation of the predicted peak flow exceeds a threshold, forming a closed loop.

The utility model aims at providing a lithium cell ultrasonic wave metal pole lug welding equipment, low in cost, green production, better applicability, can be compatible with various size models of battery, realizes the automatic welding of lithium cell pole and pole lug. The utility model discloses a rack, the upper end of rack is provided with width adjusting subassembly, width adjusting subassembly includes conveying line, the first end of conveying line is provided with range finding subassembly, the middle end of conveying line is provided with pole lug punching and cutting subassembly, material taking subassembly and welding subassembly, the end of conveying line is provided with side pusher and discharge cylinder in symmetry, pole lug punching and cutting subassembly cooperate with material taking subassembly, material taking subassembly cooperate with welding subassembly. The utility model is applied to the technical field of welding equipment.

This invention discloses an online monitoring and anomaly early warning method for particulate matter in industrial processes based on electrostatic induction and deep learning. It relates to the fields of industrial process monitoring and deep learning technology, aiming to solve the problems of poor real-time performance, weak anti-interference ability, and lack of effective early warning mechanisms in traditional methods. The method constructs a multimodal sensing system integrating an electrostatic induction sensor array and temperature and humidity compensation to achieve synchronous acquisition of particulate matter electrostatic signals and environmental parameters. Signal preprocessing is completed through improved wavelet threshold denoising and RBF neural network compensation to extract multi-dimensional features in the time domain, frequency domain, and time-frequency domain. A CNN-Bi-LSTM deep learning model is constructed to achieve real-time concentration monitoring and particle size distribution inversion. An anomaly detection model is established based on the isolated forest algorithm to complete anomaly early warning. This invention significantly improves the robustness and accuracy of monitoring under complex operating conditions, providing core technical support for industrial particulate matter emission control and green production.

The present application relates to the technical field of cement curing, in particular to an intelligent decision-making method for the curing process of cement production. The technical scheme comprises the following steps: collecting multi-dimensional parameter data in the cement curing process and preprocessing the data. The cement curing stages are divided, and a stage-based prediction model is constructed. Based on the real-time obtained multi-dimensional parameter data and the prediction model linkage analysis, the prediction result is obtained. It is judged whether the prediction result is beyond the curing target threshold range of the stage: if not, the current curing parameters are maintained; if yes, the prediction result is labeled. The labeled prediction result is used to obtain the optimal parameter combination through curing parameter optimization calculation. Through multi-source data acquisition and stage-based prediction model, the cement hydration process is accurately perceived, the curing parameters are dynamically optimized, and the problems of insufficient curing or excessive curing are effectively avoided. Water consumption and heat energy consumption can be reduced, which conforms to the concept of green production.