113results about How to "Solve the crystallization problem" patented technology

The invention relates to a lead-acid storage battery repair method, in particular to a vulcanization-induced failed lead-acid storage battery repair method. The vulcanization-induced failed lead-acid storage battery repair method is characterized in that the method comprises the following steps of: visually inspecting a fault, detecting, precharging, judging whether polar plate active matters become slurry or not, filling in dilute acid or repaid liquid, statically placing the battery, recording initial capacity, recording discharge time and over-discharge time, determining repaid charge capacity and a charge and discharge process flow, and repairing according to different battery capacities. Through the steps, the vulcanization-induced failed lead-acid storage battery repair method fundamentally solves the problem that lead sulfate is crystallized, not only can the vulcanization removal rate be reach more than 90 percent, but also the repaid success rate of the battery failed because of vulcanization can reach more than 95 percent, the service life of the battery is prolonged by more than 80 percent, the polar plate lead sulfate crystals which are though to be inevitable by the traditional theory are dissolved, and the capacities of most lead-acid storage batteries can be restored and the lead-acid storage batteries can be reused as long as the waste batteries are not visually damaged and deformed and do not have hard faults.

The invention provides a mercury-free environment-friendly hematoxylin staining solution, which comprises the following components in portions by volume: 100-300 portions of 3-10 percent hematoxylin absolute ethyl alcohol solution, 1500-2000 portions of 2-6 percent aluminum sulfate aqueous solution, 60-100 portions of .05-2 percent periodic acid aqueous solution, and 15-30 portions of glacial acetic acid. Non-toxic and innocuous chemical reagents are adopted for the mercury-free environment-friendly hematoxylin staining solution, and a histological section staining experiment shows that the nucleus is clearly stained and the structures of the chromatin, nuclear membrane and nucleolus are clear.

The invention provides optical glass. The optical glass comprises the following components (measured by oxide) in percentage by weight: 30-40% of SiO2, 1-10% of B2O3, 33-45% of SiO2+B2O3, 0-10% of La2O3, 25-40% of Nb2O5, 60-75% of Nb2O5+SiO2, 3-10% of ZrO2, 1-20% of CaO, 5-15% of Li2O, 0-10% of Na2O and 0-0.2% of Sb2O3, wherein 3<= SiO2/B2O3<=14 and 0.65<=Nb2O5/SiO2<=1.3; the optical glass does not contain TiO2, ZnO, BaO, Th, Pb, As, Cd, Hg, GeO2, TeO2, Ta2O5 and Yb2O3; and the refractive index nd of the optical glass is within the range of 1.70-1.75, and the Abbe number upsilon d is within the range of 32-38. The optical glass is low in devitrification tendency, high in transmittance, low in maximum crystallization temperature and suitable for mass production, and is mainly used for digital products, cameras, liquid crystal projectors and the like.

Disclosed are an automatic crystal removing structure of a tunnel drainage pipeline and a tunnel drainage system with the same. The automatic crystal removing structure of the tunnel drainage pipeline comprises a drain pipe, a base fixedly connected with the drain pipe is arranged inside the drain pipe, a threaded shaft is arranged in the middle of the base, the threaded shaft is arranged in the length direction of the drain pipe, a stress piece is movably arranged on the threaded shaft, an elastic piece is arranged between the stress piece and the base, supporting rods are arranged on the stress piece, the tail ends of the supporting rods are provided with brushes, and the brushes make contact with the inner wall of the drain pipe. The automatic crystal removing structure is simple and capable of effectively solving the problem of crystallization of a tunnel drain pipe, thereby reducing the water seepage and water leakage phenomena of tunnels in limestone areas; the automatic crystal removing structure is good in effect, low in cost and suitable for application and popularization.

A laterally embedded diaphragm filter plate made of constant-temp. plate core is composed of a constant-temp. plate core and a diaphragm whose joint part is fixed to the lateral surface of the constant-temp. plate core in the shrink fet mode. Its advantages are no fluid leakage, high pressure strength and long service life of plate core, high productivity and quality of product, and no crystallizing and chemical modification of material during filtration.

The invention relates to a pyraclostrobin synergistic water suspension agent. The pyraclostrobin synergistic water suspension agent is prepared from the following components in percentage by weight: 20 percent to 60 percent of pyraclostrobin, 2 percent to 4 percent of a grain-diameter increasing inhibitor, 3 percent to 6 percent of a dispersing wetting agent, 0.1 percent to 1 percent of a thickener, 0.1 percent of a preservative, 3 percent to 5 percent of an anti-freezing agent, 0.1 percent of a de-foaming agent, 2 percent to 6 percent of a synergist and the balance of water. The pyraclostrobin, the grain-diameter increasing inhibitor, the dispersing wetting agent, the thickener, an emulsifier, the synergist and the water are pre-mixed and sheared, and then are subjected to two-grade sanding to form a finished product. The pyraclostrobin synergistic water suspension agent provided by the invention is low in surface tension and good in pharmacological effect; a preparation process is simple and an application method is simple; a field experiment shows that the pyraclostrobin synergistic water suspension agent has remarkable sterilization and treatment, and protection effects.

The invention discloses a urea pumping system. The urea pumping system comprises a urea box, a urea pump module, an energy accumulator and a nozzle module which are sequentially connected through a pipeline, wherein the urea pump module comprises a main pump used for pumping a liquid in the urea box to the nozzle module, and an auxiliary pump used for reversely sucking a liquid in the pipeline back into the urea box; the nozzle module comprises a first electromagnetic valve and an atomization nozzle; the first electromagnetic valve is connected with the energy accumulator and the atomization nozzle through the pipeline; a reflux pipeline which communicates with the urea box is arranged on the pipeline between the first electromagnetic valve and the energy accumulator; and a first damping hole is formed in the reflux pipeline. According to the urea pumping system, an airfree auxiliary structure is adopted, double-pump parallel connection is adopted, when a urea solution is injected, the main pump is started, the urea solution is pumped from the urea box to the nozzle module, after injection, the auxiliary pump sucks the urea solution remaining in the system back into the urea box, and the problems of urea crystallization and pipeline blocking are solved.

The invention relates to a gas-liquid stirring and mixing device of a urea solution metering injection system, comprising a metering valve, a compressed air inlet, a mixing cavity and an injection outlet, wherein the metering valve injects a reducing agent; the mixing cavity is used for gas-liquid stirring and mixing; the compressed air inlet is arranged on the side wall of the mixing cavity and tangent to the inner wall of the mixing cavity; and the injection outlet is arranged at the bottom of the mixing cavity. The invention has ingenious design, ensures good uniformity of a stirred and mixed suspension and can effectively solve the problems of deposition and crystallization inside the mixing cavity.

The invention discloses a riboflavine sodium phosphate composition injection and a preparation method thereof. The riboflavine sodium phosphate composition injection comprises riboflavine sodium phosphate, citric acid, sodium hydroxide and sodium chloride. Each injection contains 5 to 15mg of riboflavine sodium phosphate, 2.1mg of citric acid, 2 to 4mg of sodium hydroxide and 0.6 to 0.8mg of sodium chloride. The preparation method comprises the following steps: adding water used for injection into the citric acid for stirring and dissolving; adjusting the pH to about 6.2 with sodium hydroxide; adding sodium chloride for stirring to dissolve the sodium chloride; adding the water used for injection and 1g of active carbon; adding riboflavine sodium phosphate while stirring; after the riboflavine sodium phosphate is completely dissolved, complementing the water for injection until the total amount is completely complemented; performing filtering, refluxing, filling, nitrogen charge, melting to seal, sterilizing at a high temperature; and after reducing the temperature, detecting with lamps, packing and checking, and obtaining the finished product. The riboflavine sodium phosphate composition injection does not crystallize, has good clarity and stability, and is helpful for improving the yield of the product, reducing the market rick of the product and is better applied to clinical treatment.

The invention discloses an SCR after-treatment packaging structure for a diesel engine. The SCR after-treatment packaging structure for the diesel engine comprises an injection connecting pipe, a mixer, a silencer and a urea injector installation seat. The mixer is arranged in the injection connecting pipe. The urea injector installation seat is arranged on the injection connecting pipe. The silencer is installed at the end, with the mixer, of the injection connecting pipe. The mixer, the silencer and the like are integrally designed and the installation position of the mixer is located at an intersection of the center line of the urea injector installation seat and the injection connecting pipe. In the direction of the center line of the injection connecting pipe, multiple blades of the mixer are distributed on the left side and the right side, the angle of each blade is 60 degrees, and the blades are welded into the injection connecting pipe. By the adoption of the SCR after-treatment packaging structure for the diesel engine, the problem that a urea aqueous solution is crystallized in a vent pipe of a selective catalytic reduction (SCR) after-treatment system can be solved.

The invention discloses a vehicle-mounted medical sample storage box. The vehicle-mounted medical sample storage box comprises a storage box body, an inner box body is fixedly connected into the storage box body through a damping telescopic rod, a blood sample storage cavity, a mannitol adjusting cavity, a limb placing cavity and a lithium battery cavity are sequentially formed in the inner box body from top to bottom, a sliding groove is formed in the blood sample storage cavity, and a blood sample storage device is arranged in the sliding groove in a sliding connection manner. According to the vehicle-mounted medical sample storage box, through cooperation of a liquid nitrogen bottle 10, an electromagnetic valve 15 and a second thermistor 16, the vehicle-mounted medical sample storage box can carry out low-temperature storage on a blood sample in the blood sample storage cavity in the storage process of the blood sample, when the temperature is higher than the set temperature, a circuit is conducted, the electromagnetic valve 15 is started, liquid nitrogen gas enters the blood sample storage cavity through a temperature adjusting pipe 5, the inner temperature is adjusted, and theblood sample storage is greatly facilitated.

The invention relates to a green system and method for removing grown-up karst tunnel draining pipeline crystals and belongs to the technical field of tunnel engineering. The system comprises a CO2 purifying device composed of a pressure swing adsorption device (PSA device) and a CO2 collecting tank, and a refrigerating device composed of a water storage water tank and a refrigerator. The bottom of the water storage water tank is connected with a water pump and the CO2 collecting tank, and the upper portion of the water storage water tank is connected with a center ditch through a water levelcontrol valve. The water pump is connected with a longitudinal water draining pipe on one side of the interior of a water draining zone through a connecting three-way joint, a transverse water draining pipe on the side of the interior of the water draining zone is connected with an intelligent valve, and a transverse water draining pipe on the other side of the water draining zone keeps the normalwater draining state. By means of the green system and method for removing grown-up karst tunnel draining pipeline crystals, the crystal problem of a water draining system can be solved greenly, in addition, CO2 waste gas in a tunnel and tunnel drained water can be effectively utilized, self marketing of CO2 gas in the karst tunnel is achieved, and a new application direction is also provided forautomobile tail gas treatment and karst tunnel water resource utilization.

The invention discloses a urea injection control method for an SCR (Selective Catalytic Reduction) system. The urea injection control method has the conception that after a urea injection mechanism of the SCR system is started by a vehicle, if the current actual conversion efficiency is lower than the set target conversion efficiency, correction coefficient fac post-nitrogen oxygen is increased until regeneration operation is triggered, and the nitrogen and oxygen after the correction coefficient fac are forcibly reset; for example, the correction coefficient fac post-nitrogen oxygen can be reset initial value can be reset to an initial value 1 or other correction factors are adopted to correct the correction coefficient fac post-nitrogen oxygen, so that the fac post-nitrogen oxygen is set to be other set values, and the current urea injection amount is regulated and controlled in time; and therefore, the urea injection amount can be synchronously recovered to be a normal injection value after the efficiency of the SCR system is recovered to be normal through regeneration, and the problems of reduction of the reefficiency and crystallization of the SCR system caused by excessive injection of urea can be solved.

The invention provides a method for preparing anhydrous sodium sulphate from mirabilite hydrate in chlor-alkali production and related nitre melting equipment. According to the method, the target of producing the anhydrous sodium sulphate from the mirabilite hydrate is achieved through the steps of nitre melting liquid introduction, reasonable nitre melting, heating and warming, salting-out crystallization and solid-liquid separation. The adopted nitre melting equipment comprises a nitre melting tank and a mixing melter, wherein an inner cavity of the nitre melting tank is divided into a solid-phase area and a melting area by a grating; the mixing melter communicates with the lower part of the melting area; and one path of the nitre melting liquid enters the melting area to melt the mirabilite hydrate, and the other path enters the mixing melter to be mixed and melted with nitrate slurry settled from the melting area. The process is creatively fused with a whole chlor-alkali system, a new production process is created for co-production of caustic soda of chlor-alkali enterprises, refined salt and anhydrous sodium sulphate and large-scale use of underground cheap high-SO4<2-> brine. Compared with a currently running mirabilite hydrate technology, the method has the characteristics of continuous efficient and stable operation, environment protection, energy conservation and production of high-quality anhydrous sodium sulphate.

The invention discloses a urea solution supply system. The urea solution supply system comprises a urea box, a first diaphragm pump, a second diaphragm pump, an energy storage device and a nozzle module which are connected through pipelines, wherein the first diaphragm pump communicates with the urea box through a liquid inlet pipeline; the liquid outlet end of the liquid inlet pipeline is divided into two pipelines, one pipeline is connected with the liquid inlet end of the second diaphragm pump through a connecting pipeline, and the other pipeline communicates with the urea box through a backflow pipeline; the second diaphragm pump is connected with the liquid inlet end of the energy storage device through a first liquid outlet pipeline, the liquid outlet end of the energy storage device is divided into two pipelines, one pipeline is connected with the nozzle module, and the other pipeline communicates with the urea box through a third liquid outlet pipeline; and a reversing valve is mounted on the connecting pipeline, a primary backflow module is mounted on the backflow pipeline, and a second backflow module is mounted on the third liquid outlet pipeline. The urea solution supply system not only can prevent urea from crystallizing and blocking the pipelines, but also is stable in running and low in noise and improves jet precision.

The invention provides an ammonium bicarbonate direct injection denitration reduction system and method. An ammonia preparation system is simple. The preparation conditions of a thermal power plant under different loads at present can be met. On-demand distribution of ammonia at different positions of an inlet flue is realized. The operation and maintenance cost is low. The problems that the system is easily blocked and a safety risk exists when a ammonium bicarbonate solution is stored are solved. The system comprises an ammonium bicarbonate dissolving device, an ammonium bicarbonate solution storage device, a metering distribution module, an injection device and an SCR denitration reactor which are connected in sequence. The injection device comprises a plurality of parallel injectors, a nozzle is arranged at the output end of each injector, an ammonium bicarbonate solution inlet is formed in the input end of each injector, a communicated atomized compressed air inlet is formed in one side of each ammonium bicarbonate solution inlet, and the injectors are arranged in an inlet flue of the SCR denitration reactor in the flue gas direction. The metering distribution module is connected with the ammonium bicarbonate solution inlets of the injectors.

The invention discloses a method for preparing mixed rare earth carbonate by using a mixed precipitant in a sulphuric acid system. The method comprises the following steps: with continuous stirring, mixing ammonium bicarbonate and industrial-grade ammonia water in the molar ratio of 5.6:4.4-10:1, and adding water at 15-30 DEG C to enable the concentration of the mixed precipitant to be 3 to 7 mol/L; placing the mixed precipitant and a seed crystal into a reaction tank, wherein the seed crystal is the mixed rare earth carbonate which is produced by taking mixed sulphuric acid rare earth solution as a raw material; with continuous stirring, controlling the temperature of the solution in the reaction tank to be 20-50 DEG C, and slowly adding the mixed sulphuric acid rare earth solution into the reaction tank, wherein the adding time is 2 to 6 hours, and the using amount enables the pH of the solution equal to be 6.5-7; after the ending of precipitating, aging for 0.5-2 hours at the temperature of 30-50 DEG C with stirring; filtering and washing a precipitant to obtain the mixed rare earth carbonate and ammonium sulphate-containing precipitation wastewater. According to the method, theoutput quantity of the precipitation wastewater can be reduced.

The invention discloses application of a salt formed by combining tri(hydroxymethyl)aminomethane and acid radicals or an aqueous solution of the salt to preparing of a medicine for treating hyperuricemia, gout, acute and chronic arthritis, urinary calculus diseases and related diseases. The treatment action mechanism is as follows: tri(hydroxymethyl)aminomethane and uric acid are combined throughhydrogen bonds to generate a uric acid-tri(hydroxymethyl)aminomethane conjugate, uric acid crystallization is prevented, and uric acid crystals (calculi) are dissolved; meanwhile, the combination of uric acid with macromolecular substances such as blood fat and blood sugar is reduced, and the influence of uric acid on blood fat and blood sugar is reduced. Compared with existing three action mechanisms of 1, intake reduction, 2, endogenous synthesis inhibition and 3, kidney excretion promotion for treating hyperuricemia, the action mechanism of the invention can be called as a fourth action mechanism. The invention can also be referred to as a fourth treatment method for hyperuricemia. And the problems of uric acid crystallization and influence of uric acid on blood fat and blood sugar aresolved in a targeted manner. The action mechanism is clear; the curative effect is good; and the side effect is small.