36results about How to "Efficient and stable reaction" patented technology

The invention relates to a pharmaceutical wastewater treatment system and in particular relates to a comprehensive treatment system for fermented antibiotic pharmaceutical wastewater. The system can be used for pre-treatment, biochemical treatment and advanced treatment of fermented antibiotic pharmaceutical wastewater, so that the stability of the anaerobic system is improved, the anaerobic investment is reduced, the anaerobic efficiency is improved, and moreover, in the advanced treatment stage, hardly degraded pollutants are removed through Fenton catalytic oxidation reaction, so that the wastewater is discharged by reaching the standard.

The invention provides a calcium magnesium carbonate salt mine decomposition method which comprises the following steps: an ammonium salt solution is adopted to decompose calcium magnesium carbonate salt mine, the decomposition reaction is conducted in a series-connected multistage reactor or a tower-type reactor, heat carried by mixed gas generated by decomposition reaction of the ammonium salt solution and the calcium magnesium carbonate salt mine through heating are used as heat sources for recycling. According to the provided calcium magnesium carbonate salt mine decomposition method, through the introduction of the multistage countercurrent series-connected reaction kettle or the tower-type reactor, not only are the problems that a single-stage reaction kettle is large in water evaporation amount, the energy consumption is wasted, and ammonium carbonate is relatively low in concentration and unstable solved, but also the efficient and stable reaction of decomposition of the calcium magnesium carbonate salt mine by ammonium salt is realized, the energy consumption cost is reduced, and the method is energy-saving and economical.

The invention discloses an oscillating hot-pressing sintering furnace with a pressurizing auxiliary structure, and relates to the technical field of sintering furnaces. The oscillating hot-pressing sintering furnace specifically comprises a base and a sealing device, and a shell is arranged on the upper surface of the base. According to the oscillating hot-pressing sintering furnace with the pressurizing auxiliary structure, in the process of feeding a mold, a pneumatic block can be used for clamping the mold in an attached mode through a chuck, and slides to a tray along a lead screw througha moving rod and a sliding block, a second motor can drive a platform to rotate to an accurate direction, a first electric telescopic rod can immediately drive the clamped mold to be transferred to adesignated position on the upper surface of the tray for feeding treatment, and only the assembled mold needs to be placed at the mold position in the process, so that the operation is simple, follow-up correction by professionals is not needed, and potential safety hazards caused by misoperation are avoided; and the discharging process is similar, the chuck is driven by the first electric telescopic rod to discharge the sintered mold, manual touch is not needed in the process, and safety of workers is guaranteed.

The invention provides a polycarbonate polyol, and a synthetic method and application thereof. The synthetic method comprises the following step that an ester exchange reaction is carried out on a rawmaterial A containing a mixture of polyhydric alcohol or polyol and lactone with carbonic ester to generate the polycarbonate polyol, wherein the raw material A is fed at one time, the carbonic esterwith a preset stoichiometric amount is fed into the reaction system in a continuous feeding manner, and an azeotrope of by-products and the carbonic ester is rectified in the reaction process. The mass percent of the carbonic ester in a fraction is sampled and monitored in the feeding process of the carbonic ester with the preset total stoichiometric amount, stability of the content of the carbonic ester in the composition of the extracted fraction is controlled, and/or the carbonic ester is supplemented or slightly added according to the change of the content of the carbonic ester in the fraction. The method provided by the invention can be used to rapidly and stably produce a product meeting the hydroxyl value requirement, and the post-treatment is simpler.

The invention relates to a thermoplastic elastomer mixed soft segment and a preparation method thereof. The preparation method comprises the following steps: (1) reacting (acrylate-base methyl) dimethyl-acrylate-base silane with hydroxyl-terminated polydimethylsiloxane in an organic solvent to obtain acrylate-base methyl-terminated polysiloxane; and (2) dissolving amino-terminated polyether in a solvent B at room temperature, heating to 15-30 DEG C in an inert gas protective atmosphere, adding the acrylate-base methyl-terminated polysiloxane, and stirring for 12-24 hours while keeping the temperature to perform polymerization reaction, thereby obtaining the mixed soft segment. The polyether-polysiloxane mixed segment polymer product has stable properties, and can be easily characterized. The amine-olefine addition reaction is utilized to connect the polyether and polysiloxane; and the whole polymerization process has the advantages of stable and efficient reaction, high reaction degree (up to 100%), no need of any catalyst, and no byproduct generation.

The invention relates to a hydrolytic acidification method in an anaerobic tank. The hydrolytic acidification method comprises the following specific steps: adjusting the environment in a digestion tank in advance until a moderate pH value is achieved by adding an alkali; adding sodium thiosulfate into the digestion tank, and stirring with a stirrer while adding sodium thiosulfate so that the digestion tank is controlled to be in absolutely anaerobic state and the electrode potential is controlled to be at -75ev to -15ev; standing the digestion tank for 3-5 days and then adding ethanol into the digestion tank and continuously fermenting for 3-5 days; and finally introducing sewage into the digestion tank while controlling the digestion tank to be in absolutely anaerobic state, adjusting the pH value of the digestion tank to be 7.2-7.8 by virtue of continuously adding sodium hydroxide, heating the digestion tank to 50-55 DEG C in a gradient manner and carrying out high-temperature treatment on sewage in the digestion tank at the high temperature.

The invention relates to a coupled fluidized bed graded conversion reaction device and a reaction method and mainly aims to solve the problems of low carbon conversion rates, low gasification intensities, low methane yields, hard slag discharge and low coal powder utilization rates in the prior art. By adopting the coupled fluidized bed graded conversion reaction device and the reaction method, acarbon-containing raw material with a catalyst is pyrolyzed in a pyrolyzation furnace, tar gases obtained after pyrolyzation are separated and collected, semicoke granules with the catalyst and a gasifying agent are respectively combusted and gasified in three reaction zones, reacted carbon-containing granules and a part of the catalyst are continuously fed back into the pyrolyzation furnace, ashslag at the bottoms of the reaction zones are firstly subjected to two-stage separation of a granule hydrocyclone separation device and a graded slag discharge device, and are secondly discharged outfrom the device according to acoustic emission monitoring feedback. By adopting the technical scheme, the technical problems are well solved, and the device can be applied to industrial production ofgraded conversion of coal.

The invention discloses an energy storage driving material separation and transmission direct methanol fuel cell and a working method thereof. A methanol delivery pipeline and a carbon dioxide flow path are separately arranged. Carbon dioxide of an anode product is generated and then is directly discharged through the carbon dioxide flow path, which reduces the mixing of the carbon dioxide and a methanol steam, improves the utilization rate of the methanol steam, and facilitates the collection and the utilization of the carbon dioxide. After being generated, the methanol steam directly entersinto a film electrode to participate in a reaction so as to reduce extra power consumption. The heat exchange amount of a methanol working area and an evaporation area and a carbon dioxide emission amount are accurately controlled to further acquire the methanol steam with a constant flow which participates in a cell reaction, and then the working efficiency and the stability of the methanol fuelcell are improved.

The invention relates to the technical field of GaN single crystal preparation, and discloses a GaN single crystal manufacturing device which comprises a quartz reaction pipe, a connecting flange and a separating flange. A high-temperature electric furnace matched with the quartz reaction pipe is annularly arranged on the outer side of the quartz reaction pipe. A quartz guide inlet pipe, a quartz guide gas pipe, a quartz inner container, a quartz outer container, a quartz Ga groove, a quartz spiral reaction pipe, a quartz flange connecting pipe, a quartz stepped outer frame, an inner spray pipe and a middle spray pipe are arranged in the quartz reaction pipe; and a flange plate of the quartz inner container is clamped between two flange plates of the connecting flange. According to the manufacturing device of the GaN single crystal, an HVPE method and an MOCVD method are used in the same device to control the growth of the GaN single crystal, so that the situation that a gallium nitride crystal is cracked when the gallium nitride crystal grows thick or is cooled due to stress caused by a lattice constant and a thermal expansion number can be effectively avoided, and the grown gallium nitride is easy to strip from sapphire when being cooled. The manufacturing and production cost of the product is effectively reduced.

The invention discloses a heat and mass balanced direct methanol fuel cell and a working method thereof. According to the heat and mass balanced direct methanol fuel cell, methanol and a product are conveyed separately, the fuel cell forms a stable forward transmission flow path in the whole process from flow-in of liquid phase methanol to discharge of carbon dioxide, therefore, fuel can directlyand uniformly enter an anode, the problems that a methanol reaction is insufficient, and methanol steam concentrations are not uniform due to mixing of methanol and carbon dioxide are solved, stable and efficient running of an anode-side reaction is further benefited, and cell efficiency is improved; pressure intensity generated in the generation process of the product carbon dioxide is utilized to push the liquid state methanol to enter the fuel cell, so that additional pump work is lowered; waste heat generated in a reaction region in the cell running process is transmitted to a methanol evaporation region and used for assisting methanol evaporation; and the methanol evaporating and utilizing process is more efficient and saves more energy.

The invention discloses a low-power material separation and transmission direct methanol fuel cell and a working method thereof. A plurality of methanol evaporation pipelines and a plurality of carbondioxide flow paths are respectively arranged in a methanol evaporation region, and a methanol conveying pipeline and a carbon dioxide flow path are independently arranged; and the anode product carbon dioxide is directly discharged through the carbon dioxide flow path after being generated, so that the mixing of the carbon dioxide and a methanol vapor is reduced, the utilization rate of the methanol vapor is increased, and meanwhile carbon dioxide collection and utilization are facilitated. After the methanol vapor is generated, the methanol vapor directly enters a membrane electrode to participate in the reaction, so that the additional power consumption is reduced; a stable flow path is formed in the overall process from the inflow of methanol to the discharge of carbon dioxide, the fuel self-circulation structure largely solves the problems of uneven methanol vapor concentration, insufficient methanol reaction, and methanol and carbon dioxide mixing and the like, so that the battery reaction is more stable and efficient.

The invention relates to a foamed nickel loaded carbon-embedded zero-valent iron cathode, a preparation method thereof and a method for degrading antibiotics. The foamed nickel loaded carbon-embedded zero-valent iron cathode is composed of an NF matrix and a carbon-embedded zero-valent iron catalyst loaded on the surface of the matrix. PMS can be activated under the action of an electric field to degrade antibiotics. The invention also provides a preparation method of the cathode material. The preparation method comprises the following steps: preparing an MOF-Fe precursor solution; preparing an MOF-Fe/NF precursor; and preparing the carbon-embedded zero-valent iron-loaded NF cathode. According to the carbon-embedded zero-valent iron-loaded foamed nickel cathode provided by the invention, the carbon-embedded zero-valent iron grows in situ on the surface of the NF matrix, the zero-valent iron is used as a catalyst, and the surface carbon layer not only can be used as an electron transmission channel to accelerate the catalytic reaction, but also can isolate the elemental iron from a complex external environment to effectively protect the elemental iron and prolong the service life of the electrode; the high-efficiency degradation of antibiotics can be realized, and the electrode can play a good role in complex and changeable environments, and can be suitable for industrial wastewater treatment with complex water conditions.

The invention discloses a direct methanol fuel cell capable of realizing heat balance and material separation as well as a working method thereof. The direct methanol fuel cell is characterized in that methanol and a product are separately conveyed, a stable downstream transmission flow path is formed in the whole process of the fuel cell entirety from a moment that liquid-phase methanol flows through to a moment that carbon dioxide is discharged, the problems that methanol reaction is insufficient and methanol vapor concentration is nonuniform as methanol and carbon dioxide are mixed are solved, stable and efficient performance of a reaction at an anode side is better benefited, and cell efficiency is improved; extra heat produced in a fuel cell operation process is transmitted into a methanol evaporation region, and energy consumption is reduced while a fuel cell operating temperature is lowered; and a cell product carbon dioxide enters a pneumatic diaphragm pump under the action ofair pressure, a carbon dioxide flow divider valve drives the pneumatic diaphragm pump to stably convey the liquid phase methanol to the methanol evaporation region, and power is provided for the liquid phase methanol when entering the cell without extra power consumption.