13results about How to "Avoid underreaction" patented technology

The application discloses a preparation method of a europium-doped germanate red luminescent material, and is used for preparing a material with a chemical general formula of (0.025<=<=0.1). The method comprises the following steps: sodium carbonate, calcium carbonate, germanium dioxide and europium sesquioxide are weighed according to a metering ratio, wet grinding is carried out in a garnet mortar with anhydrous ethanol as a medium for 1-2 hours, and natural air drying is carried out; the dried powder is loaded into a corundum crucible and placed in a tube furnace, a solid phase reaction is carried out under an air atmosphere, the temperature is raised to 850 DEG C at a speed of 5 DEG C / min, and the temperature is kept for 6-8 hours; after the calcination is completed, the heating power is turned off, the product is naturally cooled to room temperature along with the furnace, and crushing and grinding are carried out to obtain the material. Through optimization of wet grinding and temperature control calcination and cooling parameters, the material powder agglomeration is avoided, and technical problems such as easy appearance of derived impurities in the synthesized product, low crystallinity and existence of residual stress in the crystal are solved.

The application discloses a kind of electric pile module structures, it is related to fuel cell technical field;The electric pile module structure includes shell and the electric pile core being arranged in the shell inside, wherein the shell includes cover body and the top plate and bottom plate being respectively arranged in the top and bottom of the cover body;The cover body is equipped with air inlet and exhaust hole;The inside of the cover body is sequentially equipped with shunt structure and confluence structure along the direction of airflow flow;Wherein, the shunt structure is used to shunt the air that flows into by the air inlet into at least two airflow and make it flow to the different areas of the electric pile core respectively;The confluence structure is used to confluence and discharge through the exhaust hole after the tail gas of the electric pile core reaction.This application provides technical scheme to ensure that air can be evenly distributed, to ensure the overall performance and long-term operation stability of electric pile.

The utility model provides a material circulation reaction tank which comprises a tank body, a stirring assembly, a crushing tank and a backflow circulation pump, a feeding pipe is arranged at the top of the tank body, a liquid inlet pipe is arranged on the lateral lower portion of the tank body, a liquid discharging pipe is arranged at the bottom of the tank body, and the backflow circulation pump is connected between the liquid discharging pipe and the tank body and used for backflow of reaction liquid to the top of the tank body. The crushing tank is arranged between the liquid discharge pipe and the reflux circulating pump and is used for crushing solid materials in the reaction liquid and supplying the reaction liquid to the reflux circulating pump. According to the material circulation reaction tank provided by the utility model, a solid material and a solution are mixed and react under the stirring action of the stirring assembly, a reaction liquid with a small amount of small-ball-shaped solid materials enters the crushing tank through the liquid discharge pipe under the action of the reflux circulating pump, and the solid material and the solution are fully mixed after being crushed, so that the solid material is fully mixed; the reaction efficiency of the reaction liquid is improved, the reaction liquid flows back into the tank body through the backflow circulating pump, the mixing uniformity of the reaction liquid is improved, and the reaction efficiency of the reaction liquid is further improved.

The present invention relates to the technical field of fuel cells, and discloses a magnetically conductive fuel cell bipolar plate flow channel structure, comprising an anode plate body and a cathode plate body with the same structure, wherein a flow channel for flowing gas is formed in the grooves inside the anode plate body and the cathode plate body by means of a plurality of groups of equally spaced spacers; a flow suppression block is movably connected at equal intervals at the front and rear of the bottom of the flow channel; when the gas flow rate in the flow channel is large, the present invention can ensure that the gas flows slowly through the flow channel, ensure the uniform distribution and diffusion of the gas and the reaction efficiency, and prevent the gas flow rate from being too fast, causing uneven gas diffusion and resulting in insufficient reaction; when the gas flow rate in the flow channel is small, the gas can flow smoothly through the flow channel, ensure that there is enough gas for uniform distribution and diffusion and to ensure reaction efficiency, and prevent the lack of uniform diffusion of the gas, resulting in insufficient reaction.

The invention belongs to the technical field of flue gas treatment, and particularly relates to a smelting furnace flue gas treatment device which comprises a protective outer cylinder, a drainage component is arranged at the axis of the inner wall of the protective outer cylinder, and a flow transfer component is arranged in the middle of the inner wall of the protective outer cylinder; the protection outer cylinder comprises a heat insulation shell, external hanging brackets are symmetrically arranged on the front side and the rear side of the outer surface of the heat insulation shell, and the whole device can be hung at a preset position through the external hanging brackets; the drainage component comprises a dissolving long tube, and the upper portion of an inner cavity of the dissolving long tube is rotationally connected with a segmented rotating sleeve. The device can neutralize and filter out solid particles and acidic pollution gas in flue gas by dissolving an alkaline solution in the long pipe to achieve the flue gas purification effect, compared with a common filter device, the problem that a filter element is blocked can be avoided, in the reaction process, a stirring rotating plate can provide stirring work, and the reaction efficiency is improved. And the flue gas reacts with the alkaline solution as much as possible, so that the problem of insufficient flue gas reaction is avoided.

The present application relates to the technical field of contaminated soil remediation, and discloses a contaminated soil stabilization disposal resource utilization method and system, which comprises the following steps: obtaining pollution characteristic parameters and dividing multiple pollution grade intervals, performing crushing screening with different screening mesh numbers on the soil in each interval; determining the dosing formula and dosing amount of the stabilization agent according to the pollution grade interval corresponding to each soil graded material, and performing first-stage mixing reaction; mixing and adjusting the obtained first-stage stabilization product according to the grading proportion and supplementing auxiliary curing agent, and performing second-stage mixing reaction; after the moisture content is adjusted, compaction forming, curing, surface sealing treatment and quality inspection, the product is output as a resource utilization product after passing the inspection; and the present application also provides a modular system corresponding to the method. The present application realizes precise grading disposal and resource utilization of contaminated soil, the dosage of the agent is matched reasonably, the product quality is stable, and the present application is suitable for soil remediation engineering of various heavy metal contaminated sites.

The application discloses a stirring mill type powder reactor for processing high specific surface area calcium hydroxide, and relates to the technical field of calcium hydroxide processing equipment. The reactor comprises a mounting base, which is provided with a stirring mill box and a reaction box, and is internally provided with a stirring mill crushing assembly and a mixing reaction assembly, respectively. High-activity calcium oxide powder is fed into the reaction box through a feeding box, and water solution and dispersants supplied by two proportioning boxes are transferred to a reaction drum through a transfer conveyor, so that full reaction is realized in cooperation with a turnover plate. After reaction, the material is fed into a stirring mill drum through a dropping pipe, is crushed by spiral stirring mill blades and grinding tooth blocks, and is output through a conveying mechanism. The application adopts an integrated structure, is matched with temperature control, sealing and pulse air supply design, improves mixing uniformity and reaction efficiency, refines powder particle size, and helps to prepare high specific surface area calcium hydroxide. The structure is compact, operation is convenient, and practicality is high.

The application discloses a kind of gas-liquid two-phase mixing type reaction kettle for pharmaceutical intermediates production and drive control method, it is related to pharmaceutical intermediates production equipment technical field.In the application: the bottom of reaction kettle is equipped with gas inlet end, inner cavity is configured with driving shaft and stirring paddle, top cover is configured with gas concentration sensor and multiple inverted cone, and inner cavity is provided with floating mixing disc.The piston ring is arranged on the side of floating mixing disc, the main shaft sleeve and the flow guide pipe are arranged on the top of floating mixing disc, the jet nozzle is arranged on the top end of flow guide pipe, and the liquid outlet of jet nozzle is opposite to the lowest point of inverted cone.The floating mixing disc is provided with flow guide slope and flow guide channel, the flow blocking component is elastically installed at the flow guide channel, a liquid level meter is further arranged, and the reaction kettle is provided with a hydraulic system for driving the floating mixing disc to rise and fall.The application realizes efficient mixing of gas-liquid two-phase by dynamically controlling the rising and falling of floating mixing disc, improves reaction efficiency and product quality, and is suitable for gas-liquid two-phase reaction production of pharmaceutical intermediates.

The utility model relates to the technical field of incubation box, and disclose a kind of for traditional medicine molecule group polypeptide detection analysis incubation box, including base, the top of base is equipped with stepper motor, the top of stepper motor output shaft is fixedly connected with driving shaft, driving shaft's outer ring is equipped with driving gear, the top of base is also rotatably connected with driven shaft, the outer ring of driven shaft is equipped with driven gear, driven gear and driving gear are mutually engaged, the top of driven shaft is equipped with heating mechanism, heating mechanism is provided with multiple groups and is circumferentially arrayed distribution in the outer ring of driven shaft.The utility model can preheat specific heating area to target temperature, when the incubation box is put in, the required temperature environment can be obtained immediately by accurate rotation, the time delay of sample from room temperature to target temperature in traditional equipment is completely eliminated, and the antigen-antibody reaction can be fully carried out according to the theoretical time set in the reagent kit instruction.

The utility model discloses a reaction device for preparing difluoroacetic anhydride, which relates to the technical field of medicine preparation, and comprises a reaction kettle main body and lifting components, the top of the reaction kettle main body is provided with a sealing cover, a driving component is erected above the sealing cover, and the lifting components are connected to the left side and the right side of the driving component. And the bottom end of the driving assembly is connected with a stirring assembly. According to the reaction device for preparing difluoroacetic anhydride, the driving assembly is driven by the lifting assembly to reciprocate up and down in the vertical direction, so that the stirring assembly connected to the bottom of the driving assembly can further move up and down in the reaction kettle main body while axially rotating in the vertical direction; therefore, the materials are stirred and mixed in all directions to the maximum extent, the materials are fully reacted, and when the structure operates, the scraping plate can rotate in a manner of being attached to the interior of the reaction kettle main body, so that the materials are prevented from adhering to each other, and the reaction effect is prevented from being influenced.

The invention discloses a high-end healthy protective fabric processing technology and equipment, and belongs to the field of fabric processing equipment. The problems that when existing fabric processing equipment is used for soaking, solution circulation is poor, raw material reaction is uneven, the solution temperature is difficult to control, impurities are prone to blockage, and much solution is wasted during dehydration are solved. According to the technical scheme, the top of a solution barrel is fixedly communicated with a top barrel, two symmetrical air cylinders are arranged on the outer wall of the solution barrel, air cylinder piston rods are connected with a fixing frame, a motor is installed on the fixing frame, and a motor output shaft is connected with a driving shaft which slidably penetrates through the top barrel and is connected with a soaking barrel with a hole and a blocking cover; a heat exchange cover with a heating wire is arranged on the inner wall of the bottom of the solution barrel; a blow-off pipe with filter holes and spiral pushing blades is arranged on the side of the solution barrel, a rotating shaft with stirring blades and a positioning assembly are arranged at the bottom of the soaking barrel, and the top barrel is matched with the soaking barrel to achieve dehydration. The method is mainly used for preparing high-end healthy protective fabric, reaction uniformity and processing quality can be improved, and solution waste is reduced.

The invention discloses a stirring mill type powder reactor for processing calcium hydroxide with a high specific surface area, and relates to the technical field of calcium hydroxide processing equipment. The reactor comprises a mounting base, a stirring and grinding box and a reaction box are arranged on the mounting base, and a stirring and grinding crushing assembly and a mixing reaction assembly are arranged in the stirring and grinding box; high-activity calcium oxide powder is fed into the reaction box through the feeding box, and an aqueous solution and a dispersing agent which are supplied by the two proportioning boxes are transferred and conveyed to the reaction rotary drum and are matched with the turning plate to realize full reaction; and the reacted material enters the stirring and grinding drum through the blanking pipe, is crushed by the spiral stirring and grinding blade and the grinding tooth block, and is output by the conveying mechanism. An integrated structure is adopted, temperature control, sealing and pulse air supply design is matched, the mixing uniformity and the reaction efficiency are improved, the particle size of powder is refined, preparation of calcium hydroxide with the high specific surface area is assisted, the structure is compact, operation is convenient and fast, and practicability is high.

The utility model discloses a liquid changing device for chemical reagent additive preparation, and relates to the technical field of chemical experiment instruments. The chemical reagent additive preparation liquid changing device comprises a liquid changing bottle and a clear water bottle, the liquid changing bottle and the clear water bottle are communicated together through a guide pipe, a one-way valve is arranged at the joint of the guide pipe and the clear water bottle, the top of the liquid changing bottle is provided with a stirring rod, and the stirring rod is transversely arranged in the liquid changing bottle; through the arrangement of the starting piece, when the liquid changing bottle is used for proportioning reagents, the starting piece is used for driving the stirring rod to rotate in a reciprocating mode, the reagents in the liquid changing bottle are disturbed, the mixing effect of the reagents is improved, the reagents are prevented from being not fully reacted, meanwhile, the starting piece can extract residual harmful gas in the guide pipe in the operation process, and the operation is convenient. And by means of the design of the air spraying head structure, fusion of the harmful gas and the clean water in the clean water bottle is accelerated, and the treatment efficiency of the harmful gas is improved.