610 results about "Continuous reaction" patented technology

The invention discloses polyether-ether-ketone resin with adjustable molecular weight distribution as well as a synthesis method and application of the polyether-ether-ketone resin. The synthesis method comprises the following steps: preparing polyether-ether-ketone resin in the presence of carbonate and / or bicarbonate of alkali metal; wherein the carbonate and / or bicarbonate of the alkali metal comprises sodium carbonate and potassium carbonate, and the sodium carbonate has gradient particle size distribution. According to the invention, sodium carbonate with specific particle size distribution is used to regulate and control the reaction rate to be stable and continuous, so that the molecular weight distribution of the polymer presents a narrower distribution form. Therefore, the molecular structure is uniform, the molecular form is uniform, the physical and chemical properties, including mechanical strength, thermal stability and chemical stability, of the material can be improved, and particularly, the thermal stability of the material is improved most remarkably.

The invention discloses a method for continuously producing fluorobenzene, which comprises the following steps: S10) mixing anhydrous hydrogen fluoride and aniline in a tubular reactor to obtain an aniline hydrofluoride mixture; s20) introducing the aniline hydrofluoride mixture into a venturi tube reactor in an inert gas atmosphere, sucking powdered and dried sodium nitrite into the venturi tube reactor in a negative pressure environment formed by the venturi tube reactor, and carrying out a synthetic reaction to obtain a diazonium solution; s30) transferring the diazonium solution into a tubular reactor for pyrolytic reaction to obtain a crude fluorobenzene solution; s40) refining the crude fluorobenzene raw material to obtain fluorobenzene; according to the method disclosed by the invention, the crossing from an intermittent artificial kettle reaction to a continuous reaction is realized, the reaction is sufficient and complete, no 70% hydrofluoric acid mother liquor, no 70% sulfuric acid waste liquor, no high-concentration wastewater and no yellow mud solid waste are produced, a high-quality fluorobenzene product can be continuously prepared in a large batch, and the method has good economic and environmental benefits and a wide market application prospect.

The invention relates to the technical field of catalysts, and provides a supported sulfonated phenolic resin solid acid catalyst as well as a preparation method and application thereof. The preparation method comprises the following steps: carrying out hydrophobic modification on the surface of a carrier by adopting a silane coupling agent to obtain a modified carrier; then carrying out polymerization in-situ growth on soluble phenolic resin and a curing agent on the modified carrier to obtain a phenolic resin-loaded modified carrier; the preparation method of the supported sulfonated phenolic resin solid acid catalyst provided by the invention has the advantages that the process is simple, the cost is low, and the utilization rate of phenolic resin is high; the prepared catalyst is uniform in size, high in mechanical strength, not easy to crush, small in resistance and good in stability during liquid-phase flow catalytic continuous reaction, has good catalytic activity and high isosorbide yield when being used for catalyzing dehydration of sorbitol to prepare isosorbide, and can be recycled.

The invention relates to the field of organic synthesis, and discloses a continuous deuteration preparation method of perdeuterated carbazole. The method comprises the following steps: taking carbazole and a deuterium source as raw materials, reacting under the catalysis conditions of a solvent and a catalyst, collecting an effluent reaction solution, cooling, filtering, concentrating and recrystallizing to obtain the perdeuterated carbazole. According to the present invention, the heavy metal chloride is adopted to catalyze the continuous reaction, the carbazole is adopted as the raw material, the hydrogen-deuterium exchange with the deuterium source is performed to synthesize the perdeuterated carbazole, the reaction condition is mild, the deuterium source is supplemented for multiple times during the reaction process so as to achieve the continuous deuteration, and the conversion rate and the yield are substantially improved. The whole reaction system is carried out in an isolated environment, no other impurities enter the reaction system, the product is free of pollution in the production process, the yield reaches 91% or above, the purity reaches 99.8% or above, and the deuteration degree reaches 99% or above. The whole process does not need high-temperature and high-pressure conditions, is relatively simple and convenient to operate, and facilitates industrial large-scale production.

The invention relates to the technical field of organic synthesis, and discloses a preparation process of (S)-3-aminobutyronitrile hydrochloride, which comprises the following steps: by taking a compound S1 as an initial raw material, sequentially implementing chlorination, amino protection, cyano substitution and deprotection reaction through four-step continuous reaction (M01 preparation, M02 preparation, M03 preparation and M04 preparation), and finally obtaining the high-purity (S)-3-aminobutyronitrile hydrochloride. The preparation process disclosed by the invention is simple and convenient to operate, mild in reaction condition, stable in yield of each step, high in safety and suitable for industrial large-scale production, and can be used for carrying out standard treatment on the cyanide-containing wastewater, and has a relatively good application prospect.

The invention provides a dynamic cross-linked polyolefin elastomer and a preparation method thereof. According to the method, a double-kettle serial solution polymerization process is adopted, a reaction material is generated through a polymerization reaction in a first reaction kettle, the reaction material is transferred into a second reaction kettle added with a dynamic cross-linking agent and an initiator for continuous reaction and then enters a devolatilization system, a quenching agent is added through a static mixer, then granulation is performed through a screw extruder, and the dynamic cross-linked polyolefin elastomer is obtained. According to the preparation method, dynamic chemical crosslinking is carried out in the production process of the polyolefin elastomer, and the mechanical property and thermal stability of the obtained polyolefin elastomer product can be improved on the premise of ensuring the processability.

The invention discloses a butyl lithium solid-liquid separation continuous reaction device and a butyl lithium preparation method. According to the reaction device, through double-layer convection stirring and a baffle plate with a pyramid tip, full contact of metal lithium and halogenated alkane is realized on the premise of not dispersing lithium, the problem of excessive consumption of the metal lithium and the halogenated alkane is solved, and the problem of blockage of a filtering device in a traditional process is solved through a top discharging and bottom filtering mode; according to the method, excessive lithium metal and halogenated alkane react in the liquid-phase solvent, so that the yield of halogenated alkane is increased, excessive lithium can continue to participate in the synthesis reaction of the next kettle of butyl lithium, the content of lithium metal in the product discharged from the reactor is greatly reduced in the process on the premise of ensuring the yield of the butyl lithium product, the utilization rate of lithium is increased, and the production cost is reduced. And industrial production is facilitated.

The invention aims at disclosing a magnesium hydride continuous production device and process, and relates to the technical field of magnesium hydride preparation, the magnesium hydride continuous production device comprises a sealing shell, a heating inner container, a power assembly, a feeding assembly, a discharging assembly, an inert gas replacement assembly and a hydrogenation inlet; the heating inner container comprises a side wall, a feeding end and a discharging end, a plurality of gas one-way valves are arranged on the side wall, a spiral propeller, a plurality of steel balls and / or a plurality of steel bars are arranged in the heating inner container, and a filter screen is arranged at the discharging end; a conical part and a recycled material port are arranged at the bottom of the sealed shell; the feeding assembly comprises a feeding lock hopper and a feeding pipe, and the feeding pipe communicates with the feeding end. The discharging assembly comprises a discharging pipe and a discharging lock hopper, and the discharging pipe is communicated with the discharging end; the method has the technical effects that the particle size of the magnesium powder is 10-300 microns, the particle size of the produced magnesium hydride is 50-800 nm, continuous feeding, continuous reaction and continuous discharging can be realized, large-scale production of the magnesium hydride is realized, and the hydrogen storage density of the magnesium hydride is not less than 7 wt%.

The invention discloses a high-efficiency short-process production method and production system for carbonization-process white carbon black, an absorption reaction is completed in a normal-pressure gas-liquid small-sized carbonization reaction kettle, and rapid continuous reaction of CO2 gas and liquid sodium silicate in the carbonization reaction kettle is realized through high-strength stirring and gas-liquid interface contact enhanced absorption; and high-efficiency absorption of carbon dioxide is realized under normal-pressure reaction conditions. The carbonization reaction is carried out in a small-sized carbonization reaction kettle, the precipitation reaction can be carried out in a large-sized precipitation reaction kettle according to the scale, the solid-liquid reaction is carried out in the precipitation reaction kettle, and the silicon dioxide micro particles generated by the absorption reaction are subjected to uniform mixing by controlling the reaction time, the reaction temperature and the reaction pH value. The particles are further aggregated and grown to form the silicon dioxide particles with stable structure and reliable performance, the structure is stable, the performance is reliable, and the utilization efficiency of raw materials is improved.

The invention discloses a low-temperature connecting method for glass and a C / C composite material, and relates to a connecting method for the glass and the C / C composite material. The problems that the performance of a base material is reduced and interface bonding is poor due to the fact that the connection temperature of an existing C / C composite material and glass is too high are solved. According to the method, firstly, a metal modified layer is prepared on the surface of the C / C composite material through magnetron sputtering, a carbide reaction layer is generated at the interface of the composite material, then connection of the C / C composite material and microcrystalline glass is achieved at the temperature of 580-660 DEG C through Bi2O3-B2O3-ZnO glass brazing filler metal, a microstructure mainly comprising a glass phase is formed in a welding seam, and the welding seam is formed. A continuous reaction layer is generated at the interface of the glass brazing filler metal and a glass base material, the glass brazing filler metal and the C / C composite material are connected through direct combination of oxides on the surface of a metal modified layer, and formed welding seams are compact and free of defects such as air holes and cracks. And the shear strength of the obtained joint can reach 13MPa.

The invention discloses a carbide slag fly ash concrete aerated block and a preparation method thereof, and belongs to the technical field of resource utilization of building materials and solid waste. The aerated block comprises the following raw materials: carbide slag, fly ash, gypsum, Portland cement, aluminum powder paste, a nano core-shell structure calcium-aluminum-silicon polymer and a zwitterionic foam-stabilizing polymer, the raw materials have a specific weight part range. Wherein the nano core-shell structure calcium-aluminum-silicon polymer is prepared by dispersing fly ash in water to form slurry, reacting the slurry with sodium silicate and a sodium metaaluminate solution in sequence, then adding calcium nitrate and a zinc sulfate solution for continuous reaction, and carrying out separation, washing, drying and grinding; the zwitterionic foam-stabilizing polymer is prepared by polymerizing a monomer in a solvent, precipitating and separating out, quaternizing, activating carboxyl crosslinking, dialyzing and purifying, and freeze-drying. All the steps relate to process parameters such as dry mixing time, stirring time, curing temperature, pressure and time, and the performance of the aerated block is improved through component optimization and preparation process improvement.

The invention belongs to the technical field of catalyst preparation, and discloses a double-metal cyanide complex catalyst as well as a preparation method and application thereof. The preparation method comprises the following steps: dispersing a metal precursor in a first solvent to obtain a solution A; dispersing metal cyanide in a second solvent to obtain a solution B; immersing a high-shear mixer into the solution A, dropwise adding the solution B into the solution A for reaction, then adding the solution C for continuous reaction, and filtering to remove filtrate to obtain a precipitate; and carrying out constant-temperature slurrying on the precipitate by using the solution D, and finally carrying out solid-liquid separation to obtain a solid product. At least one of the solution A, the solution B, the solution C or the solution D contains a ligand compound. The double-metal cyanide complex catalyst prepared by the method has the characteristics of short catalytic induction time, narrow molecular weight distribution of prepared polyether polyol and the like when being used for ring-opening polymerization of epoxy compounds.

The invention discloses a slow-release temperature-controlled antifouling agent microsphere and a preparation method and application thereof, the method comprises the following steps: (1) mixing sodium alginate, copper pyrithione and a CaCl2 solution for reaction, freeze-drying, grinding and crushing to prepare intermediate product particles; and (2) mixing the intermediate product particles in the step (1) with a chitosan solution for reaction, then adding a glutaraldehyde solution for continuous reaction, and freeze-drying to obtain the antifouling agent microspheres. The sodium alginate and chitosan double-crosslinking preparation method adopted by the invention is novel, a double-layer drug-loading structure is constructed by virtue of the crosslinking effect of sodium alginate and calcium ions and the electrostatic interaction between anions and cations of sodium alginate and chitosan, and the thought is novel.

The wastewater treatment system comprises a water inlet unit, a reactor, a separation unit and a circulation unit which are sequentially connected to form a closed-loop system, the water inlet unit is further connected with a chemical dosing unit, the water inlet unit is used for conveying wastewater to the reactor, and the chemical dosing unit is used for adding alkali into the wastewater to adjust the pH value and providing required magnesium ions; a fluidization reaction zone and a separation zone are arranged in the reactor, and the fluidization reaction zone promotes generation and growth of struvite particles through particle collision and aggregation; the separation zone enables generated particles to partially fall back to the fluidization reaction zone for continuous reaction through preliminary solid-liquid separation; the separation unit is used for receiving the wastewater in the separation area, further removing residual particles, and enabling the small particles to flow back to the reactor through the circulation unit for recycling. By optimizing the particle generation, separation and backflow processes in wastewater treatment, the formation of target large particles is promoted, the resource recycling is facilitated, meanwhile, the consumption of chemical agents is reduced, and the cost is reduced.

The invention provides a continuous process for preparing aromatic hydrocarbon by supercritical carbon dioxide hydrogenation, which comprises the following steps: 1) adding a reaction liquid containing a solvent and a catalyst into a reaction kettle, spraying supercritical carbon dioxide and hydrogen into a reactor by adopting a Venturi ejector, and contacting with the catalyst in the reaction kettle to react; (2) after the reaction in the step (1), the gas in the reactor is sequentially subjected to primary condensation and secondary condensation to respectively condense the solvent and the water, the solvent of the primary condensation returns to the reaction kettle, the water of the secondary condensation is discharged, and the gas after the secondary condensation sequentially passes through an absorption tower and a desorption tower to capture non-aromatic hydrocarbon, the residual gas is used as recycle gas and returns to the Venturi ejector to enter the reaction kettle; and (3) pressurizing the reaction liquid discharged from the reaction kettle after the reaction in the step (1) through a circulating pump, feeding the reaction liquid into a heat exchanger to remove reaction heat, dividing the reaction liquid subjected to heat exchange into two streams through a cross-flow filter, feeding one stream of penetrating fluid into a rectification device, and feeding the other stream of concentrated liquid back to the reaction kettle for continuous reaction.

The invention provides an efficient technological method and system for preparing aromatic hydrocarbon through CO2 hydrogenation. The process method comprises the following steps: 1) mixing feed gas containing CO2 and H2 with recycle gas to obtain a mixture flow, and carrying out first-stage reaction on the mixture flow after heat exchange heating to obtain a first-stage reaction product; 2) performing heat exchange and separation on the primary reaction product to obtain a water phase, a gas phase and an oil phase, discharging the water phase out of the system, compressing most of the gas phase to obtain continuous circulating gas, and circulating the circulating gas back to the step 1) to continue the reaction; a small part of gas phase is discharged as purge gas; 3) distilling out light hydrocarbon from the top of the tower by rectifying the oil phase to obtain aromatic hydrocarbon-rich oil from a tower kettle; 4) heating the light hydrocarbon and then carrying out secondary reaction to obtain a secondary reaction product; and 5) carrying out heat exchange and separation on the secondary reaction product to obtain a gas-phase product and a liquid-phase product, discharging the gas-phase product as purge gas, and circulating the liquid-phase product back to the light component removal tower for rectification and separation to obtain aromatic hydrocarbon-rich oil. The first-stage reaction realizes high per-pass conversion of CO2, and the two-stage reaction is coupled to realize high selectivity of aromatic hydrocarbon.

The invention relates to the technical field of ardealite treatment technology, and discloses a method and a system for harmless treatment of ardealite, which are characterized in that fresh ardealite discharged by wet-process phosphoric acid filtration is re-pulped and then sequentially passes through a first-section reaction tank (added with fly ash and cement), a tank A of a second-section reaction tank, a tank B of the second-section reaction tank and a tank C of the second-section reaction tank for continuous reaction; performing solid-liquid separation to obtain harmless phosphogypsum; after the filtrate is settled, supernate is reused for repulping and lime milk preparation, and thick slurry is returned to the reaction tank; the reaction waste gas is washed with phosphoric acid acidic water, and washing liquid is reused for ore grinding; through multi-stage reaction and accurate pH control, the phosphogypsum stably reaches the class I solid waste standard, and the curing time is shortened from traditional several days to several hours; the system is deeply coupled with a front-end phosphoric acid system, and water balance and resource circulation of the system are realized by optimizing and filtering a washing water source and recycling steam condensate water; the process has the advantages of low cost, stable quality and flexible operation.

The invention relates to an olefin hydroformylation homogeneous catalysis continuous reaction process and system. The process comprises the following steps: mixing raw materials olefin, synthesis gas and a metal catalyst, and then carrying out hydroformylation reaction; removing a light component containing the product aldehyde from the hydroformylation reaction liquid to obtain a heavy component containing the metal catalyst; uniformly mixing the heavy component with a first extraction agent, and performing phase splitting to obtain a first heavy component phase and a first extraction agent phase; a metal catalyst and a second extraction agent are separated from the first extraction agent phase, the metal catalyst is circularly used for the hydroformylation reaction, and the second extraction agent is used as the first extraction agent mixed with the heavy components. Based on the characteristics of solubility difference and specific gravity difference between the metal catalyst and other substances in the heavy components under specific conditions, the heavy components in a reaction system are reacted at a lower temperature on the premise of not additionally adding a reagent which can influence the activity of the catalyst, and the activity of the catalyst can be well maintained within a longer reaction time.

The invention discloses a potassium propionate continuous synthesis process, and relates to the technical field of potassium propionate synthesis, the process comprises the following steps: S1, raw material pretreatment: selecting fermentation waste liquid containing propionic acid and acetic acid and potassium ore leaching liquid containing potassium hydroxide and potassium carbonate as composite raw materials, adding a composite chelating agent into the potassium ore leaching liquid, and uniformly stirring; according to the method, the composite raw material system composed of the fermentation waste liquid and the potassium ore leaching liquid is adopted, and the composite chelating agent is added, so that resource utilization of industrial waste is achieved, the raw material cost is reduced, meanwhile, impurities are prevented from interfering with continuous reaction, and through gradient temperature control-pressure cooperative regulation and linkage regulation of the PLC system, the yield is increased. The problem of product deliquescence caused by local overheating is solved, volatilization loss of propionic acid is reduced, the adaptability of the technology to raw material batch fluctuation is improved through raw material concentration online detection and dynamic parameter adaptation, the continuous production stability is guaranteed, and finally synchronous improvement of the potassium propionate synthesis efficiency and the product quality is achieved.

The invention discloses a micro-channel continuous reaction device applied to gas-liquid oxidation reaction. The micro-channel continuous reaction device comprises a feeding system, a micro-channel reaction module, a temperature control system, a product collection system and a control regulation system, the feeding system conveys a gas raw material and a liquid raw material into the micro-channel reaction module; the micro-channel reaction module comprises three or more micro-channel units which are connected in series, and each micro-channel unit comprises a plurality of gas-liquid mixers and a plurality of enhanced mixing reactors; the temperature control system is used for accurately controlling the reaction temperature; the product collecting system is used for separating and collecting reaction products; and the control adjusting system is used for monitoring and adjusting reaction conditions in real time. According to the invention, efficient mixing and uniform distribution of gas and liquid phases can be realized, the reaction efficiency is remarkably improved, side reactions are reduced, real-time monitoring and adjustment of reaction conditions are realized, and the operation stability and safety are improved.

The invention discloses a tubular continuous flow preparation process and a tubular continuous flow preparation device for (R)-(+)-2-(4-hydroxyphenoxy) propionic acid. A hydroquinone aqueous solution and a sodium hydroxide solution are respectively preheated and mixed, and then enter a tubular reactor I for reaction to obtain a hydroquinone sodium alkaline solution. And pumping (S)-(-)-2-methyl chloropropionate into a reaction system, respectively preheating the (S)-(-)-2-methyl chloropropionate and the hydroquinone sodium alkaline solution obtained in the previous step, mixing the (S)-(-)-2-methyl chloropropionate and the hydroquinone sodium alkaline solution, carrying out nucleophilic substitution reaction in a tubular reactor II, and carrying out post-treatment on the reaction completion solution to obtain the high-purity (R)-(+)-2-(4-hydroxyphenoxy) propionic acid. According to the method, an optimization method combining a tubular reaction technology and kinetic research is adopted, and MATLAB simulation and experimental verification are combined, so that the reaction yield reaches 95% or above, and the purity reaches 99% or above; the method is high in reaction controllability, fully continuous in reaction process, convenient to operate, low in cost and suitable for industrial production, and the use amount of hydroquinone is greatly reduced.

The invention discloses a non-catalytic and catalytic coupling synthesis gas preparation device and application thereof to synthesis gas preparation, the device comprises a non-catalytic reactor, a catalytic reactor, a pre-catalytic reactor, a waste heat boiler, a plurality of heat exchangers, a connecting pipeline and the like, and the pre-catalytic reactor is also provided with a heat exchanger structure; a pre-catalytic reaction cavity is arranged between a cold end inlet and a hot end outlet of the pre-catalytic reactor; the heat exchanger is used for preheating oxygen and part of raw materials and feeding into the non-catalytic reactor; the rest of the raw materials are preheated again and then fed into the pre-catalytic reactor and the non-catalytic reactor, reactants of the pre-catalytic reactor are fed into the catalytic reactor for continuous reaction, reactants of the catalytic reactor are used for supplying heat to the pre-catalytic reactor, the heat exchanger and the waste heat boiler, and the waste heat boiler can be used for preparing raw material steam; and heat balance adjustment of the whole device can also be participated. The device is high in heat utilization rate and conversion rate, can adjust the hydrogen-carbon ratio of the synthesis gas, and is particularly suitable for preparing methanol synthesis gas from natural gas and the like.

The lithium carbonate channelization continuous leaching reaction device comprises a slurry tank, a solution tank and a discharging tank and further comprises a discharging pipeline, a first feeding pipeline and a second feeding pipeline, and the first feeding pipeline and the second feeding pipeline are arranged in parallel. The leaching reaction device further comprises a plurality of slurry heat exchangers, a plurality of solution heat exchangers and a plurality of leaching reactors connected in sequence, pipe passes of all the slurry heat exchangers are sequentially connected to the first feeding pipeline in series, and shell passes of all the solution heat exchangers and shell passes of all the slurry heat exchangers are connected to the second feeding pipeline in a crossed and series mode. The first feeding pipeline and the second feeding pipeline are connected with the first leaching reactor, the leaching reaction device further comprises a heating device connected with the first leaching reactor, and pipe paths of all the solution heat exchangers are sequentially connected to the discharging pipeline in series. The problems that in the prior art, in the leaching process of the lithium-containing slurry, scabbing of a heat exchange surface is serious, and solid materials of a shell layer of a heat exchange pipeline are deposited and cannot be cleaned in the waste heat utilization process of the leached slurry are solved.

The present invention relates to a multistage series microreactor and a fluid mixing method. The microreactor includes a base internally etched with a fluid passage, the base being provided with a fluid inlet and a fluid outlet which are communicated with the fluid passage, where the fluid passage includes a plurality of micro mixing tanks, a jet port is formed at an inlet of the micro mixing tank, adjacent micro mixing tanks are connected by jet port at a contraction section, and a splayed flow baffle plate and a flow splitting column which are arranged corresponding to the jet port are provided in the micro mixing tank, the flow splitting column being arranged below the splayed flow baffle plate. By means of a jet manner, a fluid to be mixed in the invention can be continuously split, compounded, stretched and crushed, thereby realizing rapid mixing and efficient, continuous reaction.

The utility model relates to the technical field of disperse dye production equipment, in particular to a thiazole disperse dye diazo continuous reaction device which comprises a tank body, a stirring unit and a turbulent flow unit, and the tank body is provided with a cavity; the stirring unit is mounted on the tank body and is used for providing power for mixing of materials in the tank body; the turbulent flow unit is used for making materials generate turbulent flow, the turbulent flow unit comprises a turbulent flow driving part, a lead screw, a movable seat matched with the lead screw and a turbulent flow ring, the turbulent flow driving part is located on the outer side of the tank body and fixedly connected with the tank body, and the output end of the turbulent flow driving part is in transmission connection with the input end of the lead screw; the turbulent flow driving part is used for providing power for rotation of the screw rod, the screw rod is in threaded connection with the movable seat, the turbulent flow ring is fixedly connected with the movable seat, and through the design of the turbulent flow ring capable of reciprocating up and down, materials generate turbulent flow in the mixing reaction process and can be driven to flow up and down, so that the efficiency of continuous diazo reaction is improved.

The invention discloses a process for continuously producing chloroethane by using byproduct hydrogen chloride, which belongs to the field of chloroethane production, and comprises the following steps: (1) catalytic reaction: fully mixing hydrogen chloride and ethylene, and feeding the mixture into a reactor for reaction to generate a gas phase and a liquid phase; (2) multi-stage condensation: after the gas phase of the reactor is subjected to first-stage circulating water cooling condensation and second-stage refrigerant cooling, most of chloroethane is cooled to a crude product tank, and a small amount of residual chloroethane and hydrogen chloride enter the reactor through a compressor; and (3) recycling hydrogen chloride: a gas phase obtained by secondary condensation mainly comprises hydrogen chloride, and is recycled to the bottom of the reactor for continuous reaction after being pressurized by a compressor, the process flow is simple, the purity of chloroethane is high, the production consumption is low, and recycling and continuous production of chloroethane are realized.

The invention provides a production device and a production method of a core-shell precursor with normal particle size distribution, the production device comprises a homogeneous reactor, a stirring reactor and a thickener which are sequentially connected through a pipeline, and the thickener is connected back to the stirring reactor through a pipeline to form a material circulation loop; the production device adopts a continuous method to produce the core-shell precursor with normal particle size distribution. According to the method, a homogeneous reactor and a stirring reactor are adopted to synchronously carry out coprecipitation reaction, and a thickener is adopted to realize continuous reaction and particle size control, so that a core-shell precursor with normal particle size distribution is obtained. The problem of heat instability of a high-nickel positive electrode material in the prior art is solved, meanwhile, the production efficiency and quality of the core-shell precursor are improved, the performance and safety of the battery are finally improved, and large-scale popularization and application are facilitated.

The invention relates to a CO2 capture and dry reforming conversion integrated reaction system and method for coupling biogas and boiler flue gas. The reaction system mainly comprises a gas mixer, a first heat exchanger, a rotary trapping reaction furnace, a rotary dry reforming reaction furnace, a biogas storage tank and a coal-fired boiler flue gas pipeline, and the gas mixer is used for preliminarily mixing flue gas and biogas to provide stable and continuous reaction gas; the first heat exchanger realizes simultaneous proceeding of trapping and conversion reactions between double reactors of the rotary trapping reaction furnace and the rotary dry reforming reaction furnace, and realizes gas heat exchange; meanwhile, calcium carbonate generated by the rotary trapping reaction furnace and calcium oxide generated by the rotary dry reforming reaction furnace can be mutually utilized; and low-energy-consumption reaction is realized between the two reactors through a heat pump system. According to the invention, CO2-containing coal-fired boiler flue gas is reacted with biogas, the reaction waste heat is fully utilized, and the energy consumption of the calcium cycle carbon dioxide capture and conversion integrated system is reduced.

The invention discloses application of nitrogen-doped bamboo activated carbon in room-temperature oxidation of methyl mercaptan, and belongs to the technical field of sulfur-containing foul pollutant treatment. According to the catalyst, bamboo charcoal is used as a carbon source, 1, 10-phenanthroline or ammonia gas and 1, 10-phenanthroline are used as nitrogen sources, and the nitrogen-doped bamboo activated carbon catalyst is prepared through mixed grinding and high-temperature calcination. The nitrogen-doped bamboo activated carbon prepared by the method has abundant topological defects and structural alkaline sites, and has remarkable advantages in the aspect of oxidative degradation of methyl mercaptan at room temperature. The catalyst can realize catalytic degradation of methyl mercaptan at room temperature, can still keep the degradation rate of 85% or above after continuous reaction for 150 hours, and shows excellent catalytic activity and stability.

The utility model relates to the field of biomass gasification energy sources, in particular to a biomass two-stage gas making mechanism which comprises a front section gas making mechanism, a connecting auger mechanism, a rear section gas making mechanism, a discharging auger mechanism and a dust collecting mechanism. The rear-section gas making mechanism and the auger mechanism are each provided with an auger rotary vane and a transmission mechanism, the auger rotary vanes are connected with the transmission mechanisms, the transmission mechanisms are used for controlling the running speed of the auger rotary vanes, and biomass materials enter the next mechanism connected with the mechanism after being extruded and pushed by the auger rotary vanes in the mechanism where the biomass materials are located; biomass materials enter the device from the i direction for reaction, carbonized solid materials are discharged from the o direction, gasified combustible gas is discharged from the p direction, and continuous carbonization and gasification reaction of biomass is achieved, so that the efficiency of obtaining gaseous fuel is improved, energy consumption is reduced, and meanwhile the tar content in the obtained gaseous fuel can be greatly reduced.