33results about How to "Reduce decomposition" patented technology

The utility model discloses a kind of feeders of decomposition furnace, it is related to cement production equipment technical field, including: decomposition furnace body;First feed pipe, the first feed pipe is connected and is set at the top of decomposition furnace body;First motor, the first motor is set at the top of first feed pipe, the output shaft of the first motor is penetrated to the top wall of first feed pipe and is connected with rotating shaft, the bottom of the rotating shaft is connected with dispersion disc, the diameter of the dispersion disc is greater than the diameter of first feed pipe, the top of the dispersion disc is uniformly distributed with multiple poking plate;Second feed pipe;The utility model is scattered by rotating dispersion disc and multiple poking plate under the action of centrifugal force, to prevent material more concentrated in the process of discharging, to improve the overall decomposition effect.

This invention belongs to the field of polymer synthesis and microchemical technology, and discloses a method for synthesizing hydroxyl-terminated polybutadiene in a continuous flow microchannel reactor. The preparation method includes mixing butadiene, anhydrous ethanol, 30% hydrogen peroxide, and an antioxidant under nitrogen protection to obtain a raw material liquid, which is then pumped into the microchannel reactor via a high-pressure metering pump. The mixture undergoes preheating initiation and polymerization reactions sequentially, with viscosity monitored by an online viscometer. After the reaction, the product is obtained through gas-liquid separation, sedimentation and stratification, washing, vacuum solvent removal, and filtration. This invention utilizes a microchannel reactor, which provides precise temperature control and stable pressure. Segmented temperature control and online viscosity adjustment prevent reactor blockage, resulting in high product conversion and yield, and uniform molecular weight distribution. By adding auxiliary devices to optimize the process, continuous and stable production is achieved, making it more efficient, environmentally friendly, and controllable.

This invention belongs to the field of hard carbon technology, specifically relating to a bamboo-based and lignin-based hard carbon composite material, its preparation method, and its applications. The process involves pretreating raw materials to obtain pretreated material; pretreating the pretreated material with an acidic oxidant to obtain acidic oxidant pretreated material; pre-oxidizing the acidic oxidant pretreated material to obtain pre-oxidized material; pre-carbonizing the pre-oxidized material under a protective atmosphere to obtain pre-carbonized material; pulverizing the pre-carbonized material to obtain pulverized material; acid washing followed by water washing to obtain purified material; soaking the purified material in acid, filtering, and drying to obtain soaked material; mixing the soaked material with a modifier, and high-temperature coating and carbonizing under a protective atmosphere to obtain bamboo-based coated hard carbon or lignin-based coated hard carbon. Mixing the two types of hard carbon and carbon coating yields a bamboo-based and lignin-based hard carbon composite material, which is used in negative electrode sheets and batteries. When applied to batteries, the hard carbon composite material of this invention can improve battery energy density.

This invention belongs to the field of battery materials technology, and discloses a single-crystal lithium nickel manganese oxide material, its preparation method, and a lithium-ion battery. The single-crystal lithium nickel manganese oxide material contains Li... x Ni 2‑x The percentage content of O2 is C≤1.6%, C=(I LixNi2‑xO2 / (I LixNi2‑xO2 +I LiNi0.5Mn1.5O4 ))×100%, I LixNi2‑xO2 For Li in the XRD refinement results x Ni 2‑x The diffraction peak intensity corresponding to O2, I LixNi2‑xO2 +I LiNi0.5Mn1.5O4 To add LiNi to the XRD refinement results 0.5 Mn 1.5 O4 and Li x Ni 2‑x The diffraction peak intensity of the O2 two-phase model indicates a grain size of 5–11 μm. The aforementioned single-crystal lithium nickel manganese oxide material was prepared via a lithium-deficient high-temperature sintering and lithium-replenished low-temperature sintering process. Li x Ni 2‑x Large-particle monocrystalline lithium nickel manganese oxide materials with low O2 content avoid electrolyte decomposition under high voltage, thus preventing the generation of HF and Li. x Ni 2‑x The O2 reaction can effectively improve the cycle stability of the battery. Simultaneously, the high compaction density of monocrystalline lithium nickel manganese oxide material can enhance the battery's energy density, thermal stability, mechanical properties, and durability. The method for preparing monocrystalline lithium nickel manganese oxide material in this invention is relatively simple, reliable, and effective, and can utilize existing production lines.

The invention discloses a method for degreasing and sintering a photocuring molded ceramic green body. The method comprises the following steps: cleaning and post-curing the photocuring molded ceramic green body; then the treated ceramic body is placed in an atmosphere sintering furnace, the whole process of degreasing and sintering is continuously completed, the whole process is an integrated process of a low-temperature degreasing slow release stage, a medium-temperature transition connection stage and a high-temperature sintering stage which are sequentially conducted, and the ceramic part with the solid ceramic can be obtained. According to the method for integrally and continuously completing degreasing and firing of the ceramic green body, the microstructure evolution of the ceramic green body is more coherent, the defects of cracking, bubbling, deformation and the like of the ceramic green body are greatly reduced, meanwhile, the process is simplified, and the efficiency is improved.

The present application relates to the technical field of baked food, and particularly relates to an antioxidant baked composition and application thereof.The present application provides an antioxidant baked composition, which comprises an antioxidant composition and a baked ingredient; the antioxidant composition comprises the following components in parts by weight: 3-5 parts of chlamydomonas reinhardtii powder, 4-6 parts of tea tree flower powder and 3-5 parts of apocynum venetum tea powder.The chlamydomonas reinhardtii in the antioxidant composition of the present application contains algal polysaccharide and carotenoid, and provides high-quality protein and polyunsaturated fatty acid; the tea tree flower contains flavonoids and tea polysaccharide; the apocynum venetum tea contains flavonoid substances; the three raw materials are compounded in the present application, the active ingredients synergistically act, the antioxidant capacity is significantly improved, and the three raw materials synergistically enrich the nutritional composition (protein, dietary fiber and functional ingredients) of the product, realizing the dual values of "antioxidation + nutrition strengthening".

The invention discloses a method for preparing 5-methoxytryptamine by a one-pot method, which comprises the following steps: by taking 1, 2, 3, 4-tetrahydro-6-methoxy-1-oxo-beta-carboline as a raw material, neutralizing by using strong acid instead of traditional acetic acid during ring-opening reaction, and carrying out decarboxylation reaction on a ring-opening product without separating to prepare the 5-methoxytryptamine. The method can completely avoid the generation of sodium acetate in the ring-opening reaction in the traditional technology, reduces the influence on the next decarboxylation reaction, and can directly perform the decarboxylation reaction without separating the ring-opening product, thereby effectively solving the problem that the decarboxylation reaction needs to be directly performed in the prior art. According to the method for preparing the 5-methoxytryptamine by using the 2, 3, 4-tetrahydro-6-methoxy-1-oxo-beta-carboline as the raw material, the defects that weak acid is left and an intermediate needs to be separated in the method are overcome, and the reaction route is shortened. The method improves the product yield and purity, has the advantages of simplicity and convenience in operation, high product purity, less three wastes and low cost, and is suitable for large-scale industrial production.

The application discloses a kind of comprehensive treatment process of landfill leachate, belong to sewage treatment field.The treatment process includes preparation of catalyst PCN 224 / Fe3O4 mesoporous silica and landfill leachate treatment method.The application is by PCN-224 (H) metal organic framework load Fe3O4, mesoporous silica is wrapped in outer layer, PCN-224 (H) metal organic framework one side can generate singlet oxygen by photodynamic, the other side Zr and Fe construct double active center and produce synergistic effect, mesoporous silica protects the MOF core with catalytic activity and Fe and Zr double active center, simultaneously, because its permeability will not reduce the catalytic activity of catalyst.The comprehensive treatment process of the application has high COD and total nitrogen removal amount, improves the utilization rate of fenton reaction raw materials in high-level oxidation treatment landfill leachate, and has good application prospect.

The application relates to the technical field of semiconductor photoelectric devices and thin film manufacturing, and particularly discloses a preparation method of a light detector based on a sputtering hybrid semiconductor thin film. The prepared light detector comprises, from bottom to top, a transparent conductive substrate, a bottom charge transport layer, a hybrid semiconductor light absorption layer, a top charge transport layer and a metal electrode. The hybrid semiconductor light absorption layer is prepared by using a magnetron sputtering process based on target self-heating. The thermal electron emission effect of the target self-heating is used to excite high-density plasma at a low working voltage, to rapidly and lowly damage the target for sputtering, and to form a dense and pure-phase hybrid semiconductor thin film. The application uses a multi-dimensional method of adjusting the cathode surface magnetic flux, adjusting the working voltage and target self-heating to improve the plasma density in the chamber. While realizing high-speed deposition of 30-500 nm / min, the hybrid semiconductor thin film defect density is reduced and the photoelectric performance of the light absorption layer is improved.

The utility model belongs to the technical field of perovskite solar cell preparation, and relates to a perovskite thin film cell IV testing device, which comprises a base and a light-transmitting cover, a testing chamber is arranged between the light-transmitting cover and the base, and a support and a plurality of testing clamp assemblies are arranged in the testing chamber. The test fixture assembly comprises an insulation block, a positioning block, a movable block, an elastic probe and a probe base, the positioning block and the movable block are oppositely installed on the insulation block and abut against the four side edges of the perovskite thin film battery piece to be subjected to IV test respectively, the elastic probe is arranged on the probe base, and the probe base is arranged on the movable block. And the elastic probe is in conductive contact with a test part at the bottom of the perovskite thin film battery piece to be subjected to IV test. And a helium hole, an air exhaust hole and a wire passing hole which are communicated with the test chamber are respectively formed in the side surface of the base. According to the utility model, the decomposition of the film layer of the bare chip battery in the test process can be effectively slowed down, and the accuracy of the test result is improved.

The invention relates to the technical field of sulfide all-solid-state batteries, in particular to a dynamic self-adaptive lithium-conducting network binder for a sulfide all-solid-state battery, which comprises a triblock copolymer and a dynamic cross-linking agent, the triblock copolymer comprises a polybutadiene chain segment, a poly (4-vinylpyridine) chain segment and a poly (itaconic acid-co-hydroxyethyl methylacrylate) chain segment, wherein the polybutadiene chain segment is prepared by polymerizing butadiene; the poly (4-vinylpyridine) chain segment is prepared by polymerizing 4-vinylpyridine; the dynamic cross-linking agent is one or two of 1, 4-benzene diboronic acid and p-benzene diboronic acid pinacol ester. In the preparation process, each functional chain segment of the binder respectively provides strong coordination bonds, ion conduction capability and thermoplasticity, and meanwhile, borate bonds provide a dynamic network, so that high binding power, strong ion conduction capability, interface reaction resistance, flexibility self-adaption and machinability are synergistically provided.

The invention relates to the technical field of battery materials, and provides a composite diaphragm, a preparation method thereof and a sodium metal battery. The composite diaphragm comprises a base membrane and a composite coating coated on the surface of the base membrane, the composite coating comprises a first coating and a second coating which are sequentially arranged close to the base film, and the first coating is arranged close to the base film; the first coating comprises the following components: 80-98% wt of a molecular sieve and 2-20% wt of a first adhesive; the second coating comprises the following components: 30-79% wt of an ionic conductor, 20-69% wt of a polymer solid electrolyte and 1-10% wt of a second adhesive; and the ionic conductor is selected from at least one of lithium titanium aluminum phosphate, sodium fluoride, sodium hexafluoroaluminate, sodium zirconium silicon phosphorus oxide, beta-Al2O3, sodium borohydride and sodium titanium phosphate. After the composite diaphragm is applied to the sodium metal battery, the charge-discharge efficiency of the negative electrode sodium metal can be improved, the dendritic crystal growth of the sodium metal is reduced, and the gas production is reduced, so that the electrochemical performance of the sodium metal battery is improved.

The present application provides a kind of liquor with anti-fatigue, liver protection effect and its preparation method, it is related to liquor production technical field, the liquor includes base liquor, by weight parts, it further includes 3-12 parts of wheat oligopeptide, 1-3 parts of collagen tripeptide, 5-15 parts of corn oligopeptide, 2-14 parts of sea cucumber peptide, 5-10 parts of fermentation liquor;The fermentation liquor is obtained by chrysanthemum, chrysanthemum and medlar through paecilomyces japonica fermentation.The present application is through the scientific compounding of strain fermentation and polypeptide component to homology of medicine and food, can protect liver cell from damage by regulating the activity of antioxidant enzyme in liver, inhibit lipid peroxidation reaction, can also accelerate the clearance of lactic acid, urea nitrogen and other fatigue metabolites, prolong the duration of anti-fatigue, improve liver protection activity, to realize the synergistic enhancement of anti-fatigue and liver protection effect.

The application discloses a kind of micro-nano hard ceramic phase composite reinforced laser cladding nickel-based wear-resistant coating and its preparation method and application.The preparation method uses discharge plasma ball milling process to mix micro-nano hard ceramic and Ni-based metal powder for modification treatment, utilizes the synergistic effect of plasma activation and mechanical ball milling force of pulse discharge, effectively breaks the nano ceramic phase agglomerate, realizes the uniform dispersion distribution of nano ceramic phase in composite powder;By adopting the optimization of laser cladding process parameters, and cooperating with ultrasonic vibration auxiliary and / or pulse laser composite energy input, etc. Regulating means, prepare the nickel-based wear-resistant coating with uniform and dense structure, high hardness, excellent wear resistance and good metallurgical bonding with base material, which can meet the service requirements of mining machinery, oil drilling and production, metallurgical roller and other harsh working conditions, and has wide application prospect.

This invention discloses an amino compound with a benzophenanthrene furan group and an organic light-emitting device, selected from compounds of formula 1: Al-A 10 One of the groups is derived from Formula 2, where * represents a bond connected to the basic skeleton in Formula 1. When A2 is derived from a group in Formula 2, L1 is a para-phenylene group, R1 and R2 are derived from single bonds, substituted or unsubstituted C5-C24 aromatic hydrocarbon groups, substituted or unsubstituted C5-C24 heteroaromatic hydrocarbon groups, and Ar1 and Ar2 are derived from C5-C30 aromatic hydrocarbon groups, substituted or unsubstituted C5-C30 heteroaromatic hydrocarbon groups. In this invention, the triarylamine is para-linked to a transition benzene ring with benzo[a]phenanthrenefuran. This benzene ring linkage enhances the overall stability of the target molecule, strengthens the conjugation of the molecule, and increases the stacking property of the molecule in organic light-emitting materials. This invention also sets phenanthrene, naphthyl, or dibenzothiophene groups on the other two substituents of the triarylamine, affecting the electron affinity and electron transport properties of the triarylamine and further extending its lifespan.

The application relates to the technical field of agricultural product detection, and discloses a detection method for maneb-zinc residues in vegetables, which comprises the following steps: extract solution preparation, sample pretreatment, chelation and extraction, salting-out and purification, concentration and redissolution, and detection analysis; in the pretreatment stage, a dimethyl sulfate acetonitrile solution with a specific concentration is used as an extraction solution, and under the synergistic action of a first salt bag containing L-cysteine hydrochloride and a second salt bag containing ethylenediaminetetraacetic acid disodium salt, the sample is extracted through vortex oscillation; the operation combines the derivatization of the target and the solvent extraction process, improves the efficiency and completeness of the derivatization reaction, reduces the decomposition and loss risk of the target in the complex pretreatment process, solves the problems of incomplete derivatization and instability of the target in the traditional method, and lays a reliable foundation for subsequent quantitative analysis.

To overcome the problems existing in the preparation of lithium tetrafluoroborate using the current aqueous solution method, this invention provides a method for preparing battery-grade lithium tetrafluoroborate and a lithium-ion battery. The preparation method includes the following steps: adding and dispersing boric acid and lithium salt in an alcohol solvent, while simultaneously adding hydrofluoric acid dropwise to react and obtain a reaction solution containing lithium tetrafluoroborate. The reaction solution is then subjected to azeotropic removal of water using the alcohol solvent to obtain crude lithium tetrafluoroborate. The crude product is then purified by removing the alcohol solvent to obtain battery-grade lithium tetrafluoroborate. This invention also provides the application of the above preparation method in lithium-ion battery electrolytes. The method for preparing lithium tetrafluoroborate provided by this invention introduces an alcohol solvent during the reaction process, which reduces the complexation of the product with water in the traditional aqueous solution method. This significantly improves the yield and purity of the obtained lithium tetrafluoroborate, and simultaneously meets the stricter requirements for the content of impurities such as water, acid, and alcohol in battery-grade lithium tetrafluoroborate, thus facilitating industrial application.

The invention belongs to the technical field of bio-based high polymer materials and adhesives, and relates to a preparation method and application of a phytic acid-based branched flame-retardant adhesive. Comprising the following steps: S1, carrying out heating reaction on glycerol and phytic acid under a solvent-free condition to form a phytate prepolymer; s2, adding maleic anhydride into the phytate prepolymer obtained in the step S1, and carrying out esterification reaction, so as to obtain functionalized branched polyphosphate; and S3, mixing the functionalized branched polyphosphate obtained in the step S2 with chitosan in water, heating and stirring to obtain the phytic acid group branched flame-retardant adhesive. After being cured under a hot-pressing condition, the adhesive prepared by the invention still keeps the shear strength of not less than 0.7 MPa after being soaked in hot water at 63 DEG C, the limit oxygen index reaches 80%, and the adhesive shows excellent flame retardant property and bonding stability. The raw material source is renewable, the process is green, no organic solvent is needed, and the adhesive is suitable for adhesion of various base materials such as wood, metal and glass, and is particularly suitable for preparing flame-retardant plywood.

The application relates to the field of novel template materials, and particularly discloses a high-strength glass fiber modified polypropylene material building template and a preparation method thereof. The high-strength glass fiber modified polypropylene material building template is formed by injection molding of modified polypropylene master batches, the modified polypropylene master batches comprise the following raw materials in parts by weight: polypropylene master batches 50-80 parts, reinforcing agent 10-20 parts, composite flow improver 3-6 parts, and compatilizer 4-8 parts, wherein the reinforcing agent is glass fiber; and the preparation method comprises the following steps: firstly, mixing the raw materials, and then obtaining master batches through extrusion granulation; and then injection molding the master batches into the building template. The high-strength glass fiber modified polypropylene material building template has the advantages of high building template size stability.

This application relates to the field of concrete technology, specifically disclosing a fair-faced concrete and its preparation method. The raw materials for fair-faced concrete include cement, fly ash, mineral powder, glass powder, sand, reinforcing coarse aggregate, water, water-reducing agent, defoamer, and pumping agent; the preparation method is as follows: (1) cement, fly ash, mineral powder, glass powder, sand, and reinforcing coarse aggregate are added to a mixer and mixed evenly; (2) water, water-reducing agent, defoamer, and pumping agent are added to the mixer and mixed evenly to obtain fair-faced concrete. The fair-faced concrete of this application has the characteristics of high strength and high fluidity. Therefore, the vibration step is omitted during the construction and pouring process, greatly shortening the construction cycle, reducing the possibility of operational errors, and reducing rework costs.

The invention discloses a binder-free transition metal sulfide composite nitrogen-doped graphene negative electrode material and a preparation method thereof, and belongs to the technical field of secondary battery negative electrode materials. According to the technical scheme, the preparation method comprises the following steps: 1) dissolving zinc nitrate, cobalt nitrate and nitrogen-doped graphene in a mixed solution of ethanol and water, uniformly mixing, adding ammonium fluoride and urea, and continuously stirring; 2) adding foamed nickel and the uniformly mixed solution into a high-pressure reaction kettle for hydrothermal treatment, cooling, washing and drying to obtain a Zn-Co-precursor; (3) calcining the Zn-Co-precursor in an inert atmosphere, and (4) adding the Zn-Co-precursor into a high-pressure reaction kettle containing a sulfur source for hydrothermal vulcanization treatment, washing and drying to obtain the ZnCo2S4-coated NGr / NF negative electrode material.The graphene negative electrode material can improve the overall performance and stability of a secondary battery.

The invention relates to the technical field of medical titanium metal surface electroactive coatings, and provides a Ti surface K0. 65Na0. 35NbO3 piezoelectric ceramic active coating material as well as a preparation method and application thereof, and the preparation method comprises the following steps: preparing Ti / K0. 65Na0. 35NbO3 composite powder by a ball milling method; ti / K < 0.65 > Na < 0.35 > NbO3 composite powder and K < 0.65 > Na < 0.35 > NbO3 powder are sequentially laid on a Ti matrix subjected to surface pretreatment, a spark plasma sintering body is prepared through spark plasma sintering, and the Ti surface K < 0.65 > Na < 0.35 > NbO3 piezoelectric ceramic active coating material is prepared through annealing treatment of the spark plasma sintering body. The Ti substrate and the K0. 65Na0. 35NbO3 layer are stably and firmly combined through the Ti / K0. 65Na0. 35NbO3 composite gradient connecting layer, the Ti surface K0. 65Na0. 35NbO3 piezoelectric ceramic active coating material with excellent piezoelectric ferroelectric performance, dielectric performance and binding performance is achieved, and accurate regulation and control of the performance of the Ti surface K0. 65Na0. 35NbO3 piezoelectric ceramic active coating material can be achieved.

The application belongs to the technical field of building waste liquid treatment, and particularly relates to a regenerative filter device for building waste liquid emission reduction and an implementation method, which comprises a liquid storage tank, a building waste liquid treatment mechanism arranged on the liquid storage tank, and a partition plate arranged at a middle position on the inner side of the liquid storage tank. The application can effectively reduce the interference on liquid treatment by pre-separating the building waste liquid, and create better conditions for subsequent treatment. In addition, when treating the organic components in the waste liquid, the solvent mixing method is adopted, combined with precise heating and sufficient mixing, which can more completely degrade these organic components. The purity and quality of the liquid can be greatly improved, the organic materials can be effectively decomposed and degraded, the efficiency of liquid treatment is improved, and the negative impact on the environment is greatly reduced through active degradation of the organic components.

The embodiment of the invention provides a biomass charcoal negative electrode material modification method and system, and the method comprises the steps: pretreating a biomass raw material for removing impurities and controlling the particle size; pyrolyzing and carbonizing the pretreated biomass raw material to obtain biomass powder, heating to a carbonization temperature at a controllable heating rate under the protection of inert gas, and preserving heat to form primary biochar; mixing the primary biochar with an activator, and performing chemical activation treatment at an activation temperature to regulate and control a pore structure and surface properties and generate an activated product; neutralizing the activated product by using an acid solution and dissolving residual alkaline substances for post-treatment of the activated product; and mixing and drying an anchoring agent and the post-treated activation product to obtain the modified biomass charcoal negative electrode material, and the anchoring agent is selected from a lithium polysulfide compound and is used for anchoring transition metal ions in an electrolyte. According to the invention, the negative electrode interface is protected from being damaged by transition metal ions in electrochemical energy storage.

The application discloses a kind of MOF / rGO composite aerogel and its preparation method and use, the preparation method includes the following steps: middle-four (4-carboxyl phenyl) porphyrin and zirconium oxychloride are dissolved in N,N-dimethylformamide to form solution A, then add difluoroacetic acid to solution A to form solution B, solution B is transferred to reaction kettle to carry out solvothermal reaction, after natural cooling, obtain uniform suspension, centrifugal cleaning obtains PCN-222;Graphene oxide is dispersed in water to form suspension C;PCN-222 powder is obtained and a certain amount of suspension C is mixed evenly, then a certain amount of ascorbic acid is added, and after dissolving, suspension D is formed;Suspension D is placed in water bath kettle for constant temperature treatment for a certain time, to obtain MOF / rGO composite hydrogel;After washing hydrogel, freeze-drying and low-temperature annealing obtain MOF / rGO composite aerogel.The MOF / rGO composite aerogel prepared by the method is mainly applied to glyoxylic acid decolorizing material.

This invention proposes a lithium-ion battery electrolyte and its application. The electrolyte comprises at least the following components: a fluorinated solvent, including 2,2-difluoroethyl ethyl carbonate and fluoroethylene carbonate; a lithium salt, including a first lithium salt, wherein the first lithium salt comprises lithium hexafluorophosphate; and an additive, including a first additive, wherein the first additive comprises tripropynyl phosphate. The lithium-ion battery electrolyte and its application proposed in this invention can improve the high-voltage resistance of the electrolyte and enhance the cycle stability and rate performance of the battery.

The invention discloses a preparation method of fluorinated alkene ether, which comprises the following steps: replacing alkene CFCl = CFCl in a 1, 2-difluorodichloroethylene method with hydrogen-containing fluorinated alkene CFH = CFX, carrying out fluorination reaction on the fluorinated alkene CFH = CFX, fluorine gas and fluorinated acyl fluoride (RCOF) under the action of a catalyst, and directly generating an intermediate (namely a fluorinated ether isomer mixture comprising RCF2OCFHCF2X and an isomer thereof RCF2OCFXCF2H) in one step, the intermediate continues to be subjected to a dehydrohalogenation reaction with alkali, and the product fluorinated alkene ether (RCF2OCF = CF2) is obtained. According to the method, synthesis, use and storage of an unstable intermediate, namely, hypofluoro acid ester RCF2OF with strong oxidation and high explosion risk can be effectively avoided, meanwhile, decomposition caused in the reaction process of special unstable raw material acyl fluoride such as ROCOF and fluorine gas can be reduced, and the safety is effectively improved; the problems of heavy metal use and pollution caused by a zinc powder dehalogenation process in a 1, 2-difluorodichloroethylene method are solved; the method has the advantages of short process flow, mild reaction conditions, environmental protection, high product purity and the like.

The utility model discloses a device of recycling DMF in waste water, through primary dehydration tower, secondary dehydration tower and partition wall rectifying column carry out multistage dehydration and rectification, compared with traditional conventional two tower three component separation structure, greatly reduce equipment cost and equipment's floor space, vacuum pump and DMF reation kettle cooperation, the most part dimethylamine in primary dehydration tower, secondary dehydration tower and partition wall rectifying column overhead distillate is sucked to DMF reation kettle with formic acid in partition wall rectifying column column kettle liquid dehydration reaction again obtains DMF, and transports to the partition wall rectifying column and carries out rectification, has reduced byproduct in waste gas and waste liquid, reduced the loss rate of DMF, improved the recovery rate of DMF.

This invention discloses a biochar composite hydrogel slow-release fertilizer, its preparation method, and its application, belonging to the field of composite hydrogels and fertilizer preparation. The invention provides a biochar composite hydrogel slow-release fertilizer comprising biochar, hydrogel fixed in the pores and surface of the biochar, and elemental fertilizer mixed within the hydrogel. The hydrogel is prepared from metal cations and alginate. This invention proposes an "in-situ gelation within the pores" strategy, preparing the hydrogel in situ within the biochar pores to produce the biochar composite hydrogel slow-release fertilizer. This slow-release fertilizer exhibits high bonding strength between the biochar and hydrogel, high mechanical strength, and possesses both slow-release fertilizer function and soil-improving ability.

The present application relates to the field of environmental protection technology, especially to the field of IPC B01J20, further to a process for regenerating waste coconut shell activated carbon using green high-temperature plasma method, comprising the following steps: S1, introducing waste coconut shell activated carbon into a vertical fluidized bed and introducing gas for heating, so that the waste coconut shell activated carbon reaches a fluidized state; S2, carrying out plasma heating treatment on the waste coconut shell activated carbon in the fluidized state; S3, discharging the gas generated by heating into a combustion chamber for combustion; S4, passing the waste coconut shell activated carbon treated by plasma heating into water for reactivation, cooling and drying to obtain regenerated coconut shell activated carbon. The present application can clean the polymers attached to the surface and cavities of the waste coconut shell activated carbon, and can also avoid the destruction of the structure.