446results about How to "Easy post-processing" patented technology

The invention belongs to the technical field of magnetic confinement controllable thermonuclear fusion, and particularly relates to an in-situ laser diagnosis system and method for plasma fuel thermal desorption / impurity deposition in a wall material. The long-pulse laser module emits a long-pulse laser beam, and the long-pulse laser beam sequentially passes through the dichroscope I, the convex lens, the dichroscope II and quartz glass on the vacuum chamber and is irradiated to the surface of the sample to be detected; the short-pulse laser module emits a short-pulse laser beam, and the short-pulse laser beam sequentially passes through the dichroscope I, the convex lens, the dichroscope II and quartz glass on the vacuum chamber of the fusion device and is irradiated to the surface of the sample to be detected; the irradiated radiation light of the to-be-detected sample sequentially passes through the focusing lens, and a spectral signal is transmitted to the spectrum acquisition system. According to the system, high-efficiency in-situ laser thermal desorption can be carried out on fuel gas retained in a wall material, in-situ laser diagnosis of impurity deposition can also be carried out, the two methods are flexibly coupled into one set of system and can be independently used or simultaneously carried out, and a reference basis is provided for fusion reactor divertor operation control and wall material research and development in the future.

The invention discloses a production welding tool for stainless steel pipe fittings, and relates to the technical field of pipe fitting welding, and the production welding tool comprises a composite mechanism. According to the production welding tool for the stainless steel pipe fittings, through the design of a composite mechanism, the pipe fittings at one end are vertically placed on the top of the bearing mechanism, the effect of fixing the pipe fittings is achieved through the bearing mechanism, then the pipe fittings at the other end are vertically placed in the butt joint mechanism, and the effect of stabilizing components is achieved through the butt joint mechanism; the lifting butt-joint mechanism is in butt-joint fit with the bearing mechanism, so that the anti-deviation effect is achieved, manual calibration errors are avoided, the welding effect is prevented from being influenced, the operation efficiency is improved, the welding mechanism is attached to the joint of the two pipe fittings, the bearing mechanism is driven to rotate through a rotating block, the constant-speed welding effect is achieved, the welding quality is improved, and the size of a welding seam is reduced. And the welding precision is improved, chippings can occur in the welding process, the protection ring plays a role in shielding and wrapping, and chippings are prevented from splashing.

The invention discloses a preparation method of ultra-pure 4, 4 '-biphenol, which comprises the following steps: in the presence of air and a first catalyst, carrying out a coupling reaction by using 2, 6-di-tert-butyl phenol as a raw material to obtain 3, 3', 5, 5 '-tetra-tert-butyl-4, 4'-biphenol; and adding a second catalyst into the 3, 3 ', 5, 5'-tetra-tert-butyl-4, 4 '-biphenol, carrying out a heating reaction, after the reaction is finished, filtering to obtain a 4, 4'-biphenol crude product, and recrystallizing and drying to obtain the ultra-pure 4, 4 '-biphenol, the preparation method disclosed by the invention is mild in reaction condition, simple and convenient in post-treatment, easy to operate and excellent in yield, and the product purity reaches 99.99% or above.

The invention discloses a catalyst system for methanol low-pressure carbonyl synthesis of acetic acid, and relates to the technical field of methanol low-pressure carbonyl synthesis of acetic acid, the catalyst system comprises a group VIII metal main catalyst, an iodomethane cocatalyst, an inorganic iodide, and an ionic liquid with [NR1R2R3R4] < + > [CH3COO] <-> as a catalyst stabilizer, r1, R2, R3 and R4 in the ionic liquid are alkyl, aryl and acyl containing 4-9 carbons or a combination thereof, and when the catalyst system is applied to a process for synthesizing acetic acid by methanol low-pressure carbonyl, a metal catalyst can be kept stable under the condition of low water content, so that the separation energy consumption of a subsequent rectification system is reduced.

The invention discloses a method with high catalyst stability for low-pressure carbonyl synthesis of acetic acid from methanol, and relates to the technical field of low-pressure carbonyl synthesis of acetic acid from methanol, and the method comprises the following steps: S1, reaction section: introducing methanol or a reactive derivative thereof and CO into a reactor, adding a group VIII metal catalyst, an iodomethane cocatalyst and inorganic iodide, and carrying out a reaction for 2-4 hours; the preparation method comprises the following steps: by taking a raw material as a raw material and an ionic liquid with a [NR1R2R3R4] < + > [CH3COO] <-> structure as a catalyst stabilizer, carrying out carbonyl synthesis reaction on the material in a reactor to obtain an acetic acid crude product, and in the formula, R1, R2, R3 and R4 are alkyl, aryl and acyl containing 4-9 carbons or a combination thereof; s2, carrying out gas-liquid separation; s3, evaporating and washing; s4, light component removal treatment; and S5, purification treatment, so that the VIII group metal catalyst can still keep stable when reactants are in a reaction system with low water content of 0.5-1.0%, the energy consumption of a rear-end dehydrating tower and a finished product tower is reduced, and the production cost is reduced.

The invention discloses a built-in heat exchange double fluidized bed reaction device, which is used for a biomass raw material hydrogen production process, and comprises: a gasification chamber, which is of a cylindrical structure and is provided with a conical surface at the bottom, and the conical surface is provided with a hole for introducing bubbling fluidizing air; the combustion chamber is of a tubular structure and is arranged in the gasification chamber in a sleeved mode, the bottom of the combustion chamber is in an open state, and the combustion chamber is arranged in the conical surface area and used for introducing vertically-upward combustion-supporting air; the material returning units are arranged at the upper part of the reaction device, are uniformly arranged along the circumferential direction and are used for carrying the high-temperature bed material particles from the combustion chamber to an annular gasification area outside the combustion chamber and mixing the high-temperature bed material particles with biomass raw materials in the gasification area to produce hydrogen; the material returning unit is provided with a loosening chamber and a material returning chamber, and a bottom plate of the loosening chamber is obliquely arranged towards the material returning chamber. Through the built-in design of the double fluidized beds, the feeding pipe and the return feeder are prevented from being exposed at room temperature, and the heat loss of the reactor is reduced; and meanwhile, the device can provide enough regeneration time for the bed material under the condition of keeping a relatively high solid conveying rate.

The invention relates to a regeneration treatment method and application of a degradable high polymer material, and the regeneration treatment method comprises the following steps: degrading the degradable high polymer material in a system in which an organic nonmetal catalyst and a water-containing solvent exist to obtain a degradation product; wherein the degradable high polymer material comprises one or more of a polyester material and a polycarbonate material; the organic nonmetal catalyst is selected from one or more of diphenyl phosphate, binaphthol phosphate and organic alkali. By adopting the specific organic non-metal catalyst, efficient degradation of the degradable high polymer material can be realized, the degradation speed is high, the conversion rate is high, the reaction yield is high, and the cost is low; degradation products can be effectively utilized again as valuable chemicals.

The present invention provides a chemical synthesis method of EPS-G7, wherein β-cyclodextrin A is acetylated to obtain β-acetylcyclodextrin B, B is ring-opened in a mixed solution of acetic anhydride / concentrated sulfuric acid to obtain a chain acetylated heptose C, p-nitrophenol is condensed with intermediate C using boron trifluoride acetonitrile to obtain a key intermediate p-nitrophenyl (G1)-O-acetyl-D-maltoseptaglycoside D with α as the dominant configuration, D is removed from the acetyl group under the action of sodium methoxide to obtain pNP-G7 (p-nitrophenyl (G1)-D-maltoseptaglycoside), pNP-G7 is in the presence of p-toluenesulfonic acid and dimethoxyethane, and acetal protection is formed between the hydroxyl groups on C4 and C6 of the terminal monosaccharide to obtain EPS-G7. The reaction raw materials used in the method of the present invention are cheap and readily available, and the chemical synthesis of α-amylase detection reagent EPS-G7 is realized, which is a simple, economical and efficient synthesis method.

The invention discloses a preparation method and application of a solid waste-based geopolymer composite carbon dioxide adsorption and desorption material, the composite adsorption material is prepared by taking solid wastes such as fly ash or waste incineration bottom ash, slag and the like as substrates, organic amine tetraethylenepentamine as an additive, sodium hydroxide and water glass as activating agents, and sodium hydroxide and sodium silicate as auxiliary agents. And carrying out one-step reaction in a water solution at normal temperature and normal pressure. The adsorption material is simple and convenient in preparation process, low in cost and excellent in adsorption performance; carbon dioxide can be desorbed after the temperature of the adsorbing material is increased under the normal pressure condition; the method not only realizes resource treatment of solid wastes, but also can adsorb and store carbon dioxide, and can desorb carbon dioxide to extinguish fire after a fire disaster occurs, thereby having a good application prospect.

The invention relates to the technical field of sludge treatment equipment, and provides a drying and caking device for viscous sludge treatment, which comprises a drying box body, a heating mechanism is detachably mounted on the drying box body, a fan is assembled on the heating mechanism, an exhaust pipe communicated with the heating mechanism is arranged in the drying box body, and a conveying mechanism is movably mounted in the drying box body. The sludge overturning device has the beneficial effects that the sludge is overturned through cooperation of the conveying mechanisms and the guide mechanisms, meanwhile, the sludge is prevented from being accumulated or adhered in the overturning process, the sludge overturning efficiency is improved, and the sludge overturning efficiency is improved by adjusting the distance between the L-shaped supporting plate and the supporting inclined plate. The sludge caking thickness is adjusted, later treatment is facilitated, meanwhile, different thicknesses are adjusted according to the characteristics of sludge, and the drying efficiency is improved.

The invention relates to a preparation method of 2, 4-difluorobenzonitrile, which comprises the following steps: (1) mixing an aprotic polar solvent, toluene and potassium fluoride, heating and refluxing for dehydration and toluene removal; (2) adding 2, 4-dichlorobenzonitrile and a catalyst into the mixed solution obtained in the step (1), and reacting to obtain 2, 4-difluorobenzonitrile; the catalyst comprises any one or a combination of at least two of a pyridine catalyst, a crown ether catalyst and an imidazole catalyst. The preparation method provided by the invention has the advantages of low synthesis cost, simple synthesis process, high yield and high purity, and is suitable for industrial production.

The invention discloses a method for co-producing triphenylphosphine and silicon tetrachloride, which comprises the following steps: S1, mixing triphenylphosphine oxide with a solvent, heating to 90-110 DEG C, and dropwise adding trichlorosilane to carry out reduction reaction; the reaction pressure is controlled to be 0.12 to 0.20 Mpa absolute pressure; s2, the reaction temperature is kept not lower than 90 DEG C, preferably 90-110 DEG C, meanwhile, the system pressure is adjusted to be negative pressure, and the reaction continues for 0.5-3 h; and after the reaction is completed, rectifying and separating out silicon tetrachloride, adding water into the residual reaction liquid for quenching, filtering out insoluble substances, and removing the solvent to obtain the triphenylphosphine. According to the method, high-purity triphenylphosphine can be obtained with high yield, the electronic-grade silicon tetrachloride is co-produced, the generation of silicon dioxide is reduced, the gel coating problem of the silicon dioxide and the product loss are reduced, the post-treatment is more convenient, and the method is suitable for industrial production.

The invention discloses a synthesis method of dotenorad. The invention provides a preparation method of a compound B. The preparation method comprises the following step: reacting 3, 5-dichloro-4-hydroxybenzoic acid with a compound A to generate the compound B in an organic solvent under the action of a condensing agent. The preparation method provided by the invention is short in step, high in reaction yield, high in purity, low in three-waste generation amount, low in production cost and high in product quality, and is a green and environment-friendly preparation method. # imgabs0 #

The invention discloses a magnesium oxide-medium / high-entropy zirconate pyrochlore multiphase ceramic inert fuel base material and a one-step preparation method, the magnesium oxide-medium / high-entropy zirconate pyrochlore multiphase ceramic inert fuel base material has a chemical general formula of omega MgO-(1-omega) (A1 / n) 2Zr2O7, omega represents 30-80wt.%, (1-omega) (A1 / n) 2Zr2O7, (1-omega) (A1 / n) 2Zr2O7, (1-omega) (A1 / n) 2Zr2O7, (1-omega) (A1 / n) 2Zr2O7, (1-omega) (A1 / n) 2Zr2O7, (1-omega) (1 N represents the number of element types of A lattice sites in (A1 / n) 2Zr2O7 pyrochlore, and n is an integer and is greater than or equal to 3 and less than or equal to 5; meanwhile, the types of the elements are selected from La, Nd, Sm, Y and Er, and the types of the elements and the mass ratio of the two crystal phases in the composite ceramic can be regulated and controlled at will. The composition design and one-step preparation method of the MgO-medium / high-entropy (A1 / n) 2Zr2O7 composite ceramic inert fuel base material, provided by the invention, have the advantages of flexible composition design, simple preparation process flow, high product compactness, suitability for simultaneous transmutation treatment of Pu and various MA and the like.

The utility model provides a panel high-brightness LED (light-emitting diode) lamp, which relates to the technical field of panel high-brightness LED lamps and comprises a lamp base, a plurality of lamp bead blocks are arranged on one side of the lamp base, a lampshade is detachably mounted on one side of the lamp base through bolts, a cleaning and collecting device is arranged on the inner wall of the lampshade, and the cleaning and collecting device is connected with the lamp bead blocks. By arranging the cleaning and collecting device, in the lighting process of the LED lamp, when insect corpses adhere to the interior of a lampshade after the LED lamp is used for a long time, a motor in the inner wall of a first sliding groove can be started to drive a threaded rod to rotate, and therefore a brush and a scraping plate can be driven to move back and forth in the inner wall of the first sliding groove; the insect corpses retained at the bottom of the lampshade are pushed to the two ends of the lampshade, fall out from the L-shaped holes after being pushed to a certain position and fall into the inner wall of the collecting box to be collected, later treatment is facilitated, and the situation that the illumination range of the lamp beads is blocked, and the illumination effect of the lamp bead blocks is affected is avoided.

The invention belongs to the technical field of organic synthesis of pesticides, and discloses a synthesis method of pyroxasulfone. The synthesis method of pyroxasulfone comprises the following steps: taking an intermediate A as shown in a formula (I) and a sulfonating agent, and adding a catalyst for reaction to obtain an intermediate B as shown in a formula (II); taking the intermediate B and an intermediate C as shown in a formula (III), and reacting under an alkaline condition to obtain pyroxasulfone. According to the synthesis method of pyroxasulfone, reaction steps are reduced, and the process duration and the production period of pyroxasulfone are greatly shortened; the used raw materials are low in cost and easy to obtain, the reaction conditions are mild, and oxidants such as hydrogen peroxide are not needed; meanwhile, few three wastes are generated in the technological process, and the method is environmentally friendly, is suitable for green large-scale production, and is a green synthesis method which is efficient, environmentally friendly and easy to control.

The invention belongs to the field of synthesis of sulfoxide compounds, and particularly relates to a doped metal halogenated perovskite photocatalyst as well as a preparation method and application thereof. The preparation method comprises the following steps: adding a DMSO (dimethylsulfoxide) solution containing RuBr3, BiBr3 and CsBr into an isopropanol solution containing citric acid, stirring and reacting to obtain the doped metal halogenated perovskite (Ru-Cs3Bi2Br9), and synthesizing the sulfoxide compound under the conditions of air atmosphere and visible light irradiation by taking the sulphide as a photocatalyst, taking the sulphide as a raw material and taking acetonitrile and water as solvents. By adopting a method of doping Ru < 3 + > with metal halogenated perovskite, efficient catalytic activity and high stability of the metal halogenated perovskite material under oxygen-enriched and high-humidity conditions are realized; the Ru-Cs3Bi2Br9 disclosed by the invention is used as a catalyst, efficient and high-selectivity synthesis of sulfoxide compounds can be realized through visible light irradiation in an air atmosphere at room temperature, and the method is economical, green, high in atom utilization, simple and convenient in post-treatment, low in experimental cost and suitable for large-scale application.

The utility model discloses an automatic cleaning device for an aquatic product breeding net cage, and belongs to the technical field of automatic cleaning devices. Comprising a cleaning chamber located on a frame body, a conveying mechanism is arranged on the frame body, a conveying path of the conveying mechanism passes through the cleaning chamber, a water inlet is formed in the top of the cleaning chamber and communicated with a water pipe, a plurality of nozzles are connected with the water pipe, a water receiving tank is arranged below the cleaning chamber, and a water outlet is formed in the bottom of the water receiving tank. The mesh cage cleaning device has the beneficial effects that manual work is replaced for cleaning the mesh cage, the cleaning efficiency is improved, the labor cost and the working intensity are reduced, garbage generated by cleaning is concentrated, and later treatment is facilitated.

The invention discloses a preparation method of fiazonetin, and belongs to the technical field of medicinal chemistry. According to the route, 2-halo-3-methylpyrazine which is low in price and easy to obtain is used as a raw material and sequentially reacts with hydrazine hydrate and orthoester, and then a hydrogenation reduction reaction is performed to generate a compound 4; carrying out chiral resolution or chiral separation on the compound 4 and carrying out condensation reaction on the compound 4 and p-fluorobenzoyl halide to obtain an intermediate compound 5 or 5'and a new intermediate compound 6; reacting the compound 6 with a halogenating reagent to obtain a compound 7; carrying out Suzuki coupling reaction on the compound 7 and a compound 8 to obtain a compound, namely, the compound of the formula A, namely, non-azonepan; according to the route, the raw materials are simple, easy to obtain and low in cost; the reaction is simple, the preparation efficiency is high, and the reaction yield of each step can be higher than 90%; no harsh reaction conditions exist, and operation is safe; post-treatment is simple and convenient, and environmental pollution is low. The method is suitable for large-scale production; a high-chiral product can be obtained, the chiral purity value of a final product is as high as 99.5%, and the method has relatively good market value and profound practical significance. # imgabs0 #

The invention relates to a branched polymer for selective water control of an oil well and a preparation method thereof, and belongs to the technical field of oilfield chemistry. The preparation method comprises the following steps: firstly, carrying out formylation modification on nano-cellulose by using an oxidizing agent, then carrying out Schiff base reaction on the formylated nano-cellulose and polyethylene polyamine to realize amination modification, and then reducing the nano-cellulose by using a reducing agent to improve the dispersity and reaction activity of the nano-cellulose. On the basis, through an oxidation-reduction reaction between the aminated nanocellulose and Ce < 4 + >, a nonionic water-soluble monomer, an anionic water-soluble monomer, a hydrophobic monomer and the like are used as raw materials, and a polymer with a branched structure is prepared through aqueous solution polymerization. The branched polymer has high molecular rigidity, and the temperature resistance, salt resistance and retention capacity of the branched polymer are remarkably improved. Tests show that the branched polymer still keeps an excellent selective water control effect under long-term scouring of a large amount of liquid.

The invention discloses a preparation method of 1-fluoromethyl methyl carbonate, which is characterized by comprising the following steps: 1, 1-chloromethyl methyl carbonate is dissolved in a mixed solvent, the mixed solvent comprises an organic phase and a water phase, and the water phase is deionized water; adding a catalytic amount of iodized salt and an excessive amount of acidic fluorination reagent, and carrying out nucleophilic fluorination reaction at 25-80 DEG C; the iodized salt is selected from one of sodium iodide, potassium iodide and tetrabutylammonium iodide, and the feeding molar ratio of the iodized salt to the 1-chloromethyl methyl carbonate is 0.05-0.2; and 2, after the reaction is completed, washing the reaction liquid with water, concentrating to remove the organic solvent, and carrying out reduced pressure rectification on the concentrated liquid to obtain the 1-fluoromethyl methyl carbonate product. The method has the advantages that reaction conditions are mild and controllable, the process is simple, aftertreatment is convenient, the product purity is 99.6% or above, the yield is generally 91% or above, the highest yield can reach 96.76%, the product purity and yield are both greatly improved, and industrial production is greatly facilitated.

The present invention relates to the technical field of liposomes, and in particular to a supramolecular astaxanthin liposome and a preparation method and application thereof. The preparation method comprises: mixing astaxanthin with a cationic precursor in a solvent to react to obtain supramolecular astaxanthin; reacting the supramolecular astaxanthin, soybean lecithin and a surfactant to obtain the supramolecular astaxanthin liposome. The preparation method has simple synthesis steps, convenient post-treatment, high purity and high yield of the obtained product. The obtained supramolecular astaxanthin liposome has the antioxidant and repairing effects and biological activities of astaxanthin and lipids, effectively improves the solubility and skin permeability of astaxanthin and can improve its biological activity, and has potential application value in transdermal administration and delivery.

The invention discloses a method for synthesizing 2, 5-furandicarboxylic acid and co-producing furan from furoate, which comprises the following steps: synthesizing 2, 5-furandicarboxylic acid and furan by using a high-pressure reaction kettle, furoate, carbon dioxide and auxiliaries in a solvent and catalyst system through a one-pot method. A gas-liquid-solid three-phase mixture in the reaction kettle is separated, the gas phase is a mixture of furan and carbon dioxide, the mixture is discharged to a subsequent condensing device through an exhaust valve, and furan is obtained through condensation and separation; the liquid phase and the solid phase are separated through filtration, the liquid phase is a solvent and can be repeatedly used after being dewatered through a molecular sieve, the solid phase is 2, 5-furandicarboxylic acid salt and a catalyst, water is added for dissolution, then filtration is performed, the solid is dried to obtain the catalyst, and 2, 5-furandicarboxylic acid can be obtained by acidification of an aqueous solution. The method is simple and controllable in technological process, high in product purity and simple and convenient in post-treatment, and the obtained product is used for synthesis of various drugs, furyl polymers, THF and medical intermediates and has a good application prospect.

The invention discloses a synthesis method of a trivalent GalNAc compound, which comprises the following steps: under the action of a condensing agent and organic alkali, reacting carboxyl-containing D-galactosamine pentaacetate as shown in a formula I with carbobenzoxy-protected diamine as shown in a formula II to obtain an intermediate III; under the hydrogen atmosphere, the intermediate III reacts under the catalysis of palladium carbon to remove a carbobenzoxy protecting group, and an intermediate IV is obtained; under the action of a condensing agent and organic alkali, the intermediate IV reacts with tri [(2-carboxyl ethyoxyl) methyl] methyl benzyl carbamate, and the trivalent GalNAc compound shown in the formula V is obtained. The method is simple and rapid in reaction process, mild in condition, simple and convenient in post-treatment, and high in target product yield which at least reaches about 55% and is obviously higher than that in the prior art.

The invention discloses an adhesive tape stretching detection device, which belongs to the technical field of adhesive tape production detection. The device comprises a base and a bearing rod fixedly installed at the four corners of the top of the base, wherein a rectangular frame is fixedly installed on the upper ends of the bearing rods, and a U-shaped plate is fixedly installed on the top of the rectangular frame, a scale is fixedly installed on the front side of the bottom wall of the inner cavity of the U-shaped plate, scraping components are respectively installed on both sides of the front side of the top of the U-shaped plate, and transmission components are respectively installed on the lower sides of the front sides of both sides of the U-shaped plate. Through the mutual cooperation among the threaded rod, the threaded sleeve, the belt, the servo motor B, the guide plate, the guide rod, the ball, the moving block and the cleaning plate, the adhesive on the L-shaped plate can be cleaned to avoid residual adsorbed impurities and affect the effect of subsequent tests, and through the mutual cooperation among the spraying pipe, the hose, the shell, the electric heating and the heat dissipation fan, hot air can be blown on the adhesive when cleaning it, thereby accelerating the cleaning effect.

This invention discloses a method for preparing and detecting a fluorescent probe for detecting changes in mitochondrial viscosity in organisms, belonging to the field of chemical analysis and detection technology. Triphenylbromoethylene and a five-membered heteroaromatic compound containing aldehyde and boric acid groups are dissolved and reacted with a catalyst; isopropanol is removed by cooling and vacuum evaporation, followed by water extraction, solvent removal, and column chromatography to obtain ND-SF-1; ND-SF-1 is mixed with 4-pyridineacetonitrile, anhydrous ethanol is added, piperidine is added dropwise, the mixture is heated, cooled, and refluxed, then cooled to room temperature, and the precipitated solid is washed to obtain ND-SF-2; ND-SF-2, 3-bromopropyltrimethylammonium bromide, and potassium iodide are mixed and added with acetonitrile, heated, and then cooled to room temperature, and the precipitated solid is collected and washed to obtain ND-SF-3; ND-SF-3 and potassium hexafluorophosphate are mixed and added with acetonitrile, heated, and then cooled to room temperature, and the solid is collected and washed to obtain the fluorescent probe. The fluorescent probe provided by this invention is simple to prepare, low in cost, highly sensitive, selective, and biocompatible; it can sensitively detect changes in mitochondrial viscosity in organisms.

The utility model relates to a double-channel cutting machine with V-shaped configuration. The double-channel cutting machine comprises a first feeding side pinch belt, a second feeding side pinch belt and a third feeding side pinch belt, a second feeding side pinch belt; the first discharging side clamping and conveying belt corresponds to the first feeding side clamping and conveying belt through a gap; the second discharging side clamping and conveying belt corresponds to the second discharging side clamping and conveying belt in a clearance manner; and the cutter point track of the cutter during rotation passes through the gap. The first feeding side clamping and conveying belt and the second feeding side clamping and conveying belt are correspondingly arranged in the cutting main machine at a V-shaped inclination angle. Correspondingly, the first discharging side clamping and conveying belt and the second discharging side clamping and conveying belt are correspondingly arranged in the cutting main machine at the V-shaped dip angle. The blade point track of the cutter covers the whole section of the long-strip-shaped raw material and the other long-strip-shaped raw material, so that the long-strip-shaped raw material and the other long-strip-shaped raw material are cut off to produce a plurality of finished products. The double-channel cutting machine disclosed by the utility model can be used for efficiently cutting wide long-strip-shaped materials under the conditions of low equipment cost and compact equipment configuration space.

The utility model discloses an embedded culvert sewage intercepting device, which is characterized in that a plurality of drainage pipelines are arranged on the side wall of an embedded culvert at intervals, and the end parts, positioned in the embedded culvert, of the drainage pipelines are drainage ends; a filtering structure is arranged between the drainage end of the drainage pipeline and the extension pipe; the drainage end of the drainage pipeline is downwards connected with a blow-off pipe, and an electric butterfly valve is mounted on the blow-off pipe; a collecting frame is fixedly installed in the buried culvert and arranged below the blow-off pipe, the lower portions of the two ends of the collecting frame penetrate through each other, and a scraping assembly is installed in the collecting frame. And the end part of the extension pipe is positioned on the outer side of the collection frame. The buried culvert sewage intercepting device has the advantages of being capable of filtering and separating impurities and collecting the impurities so as to facilitate post-treatment.

The invention provides a deuterated phenyl carbazole compound and a preparation method thereof, and belongs to the field of organic photoelectric materials. The preparation method of the deuterated phenylcarbazole compound provided by the invention comprises the following steps: mixing a phenylcarbazole compound, decahydronaphthalene, deuterium water and a catalyst, and carrying out a deuteration reaction to obtain the deuterated phenylcarbazole compound, the catalyst is any two combinations of different transition metals in Pd / C, Pt / C, Ru / C, Rh / C, Ir / C and PtO2. The deuteration efficiency and the deuteration rate of the deuterated phenyl carbazole compound can be improved by taking the decahydronaphthalene as the solvent; the high deuteration rate is realized in a mode of combining two different transition metals. The average deuteration rate of the deuterated phenyl carbazole compound prepared by the preparation method provided by the invention can reach 72.7-87.4%, and the deuterated phenyl carbazole compound has a relatively high deuteration rate.

The invention discloses a tripterine acrylamide derivative with a structure shown as a formula III, wherein A1 and A2 are respectively and independently selected from O and NH; l is selected from-(CH2) n-and-((CH2) 2O) m (CH2) 2-, n is an integer ranging from 2 to 6, and m is an integer ranging from 1 to 6; r1 and R2 are respectively and independently selected from H, # imgabs0 # R3 and R4 are respectively and independently selected from C1-C4 alkyl, or R3 and R4 are connected with each other to form a 5-7-membered heterocyclic ring containing one oxygen atom together with an oxygen atom, or R3 and R4 are connected with each other to form a 5-7-membered heterocyclic ring together with a nitrogen atom. Compared with tripterine, the tripterine acrylamide derivative disclosed by the invention has the advantage that the inhibition effect of the tripterine acrylamide derivative on tumor cells is obviously enhanced. The invention also discloses an application of the tripterine acrylamide derivative in preparation of antitumor drugs. # imgabs1 #