62results about How to "Slow down the rate of formation" patented technology

The invention discloses a gradient wheat wetting process, and belongs to the technical field of processing of wheat powder. Ultrasound, microwaves, refrigeration and functional wheat wetting solution are combined to perform gradient wheat wetting for wheat grains by three times, so that the separation of bran from wheat germs is improved, the evacuating degree and the permeation capacity between such structures as wheat grain epidermises, seed coats, germs and endosperm, and macromolecular nutrient substances are improved, the water permeation speed is accelerated, the total wheat wetting process time is shortened to 6-12 h, the flour yield is 78.5-79.5%, the oxidation resistance and the nutrient value of flour are improved, the appearance quality, the physicochemical quality and the food safety of wheat flour are improved, the consumption of such processes as subsequent flour milling is reduced, the production cost is reduced, and a new road is sought for the wheat wetting process.

The invention relates to a surface processing technique for the bacterium resistance, the erosion resistance and the tarnish resistance of aluminum or aluminum alloy material, comprising the following steps: firstly, degreasing processing is carried out on an aluminum material used as a workpiece, the aluminum material after being degreased is put into an acid solution, the workpiece is used as one pole, an aluminum plate or a lead plate is used as the other pole and is electrified with alternating current, the liquid temperature is kept between 0 DEG C and 30 DEG C, an oxidation film with bacterium resistance, erosion resistance and tarnish resistance is formed on the surface of the aluminum material after oxidation for 10-30 minutes, and finally, the workpiece is taken out and placed in purified water of 90-100 DEG C and closed for 15-20 minutes. The acid solution has the components and the content that each liter of acid solution contains 80-150 grams of industrial grade sulfuric acid, 2-10 grams of chromic anhydride and 0.1-1.5 grams of water soluble silver salt. The surface of the aluminum material after being processed by the invention is provided with a layer of oxidation film, silver compounds with bacterium resistance and tarnish resistance, such as silver chromate, silver dichromate and the like, are formed in the film, then the film is closed by hot water, and the erosion resistant performance is more excellent.

The invention discloses an immersion plate-type membrane bioreactor for improving membrane pollution control and a wastewater treatment method using the immersion plate-type membrane bioreactor, belonging to the technical field of water pollution control. The immersion plate-type membrane bioreactor disclosed by the invention is provided with a reciprocating type driving device; the reciprocating type driving device is connected to a plate-type membrane element reactor framework or a fixed biological membrane carrier stuffing frame so as to ensure the regularly and controllably relative movement of a biological membrane carrier and a plate-type membrane, so that the biological membrane carrier scrubs the surface of the plate-type membrane, the pollution process of the plate type membrane is slowed down, and the frequency and amplitude of the relative movement can be adjusted and controlled at any time according to actual requirements. The reactor adopts a micropore aeration manner during aerobic biological treatment so as to improve the transfer efficiency of oxygen and an energy-saving effect. A biological membrane grows on the biological membrane carrier, so that microbial florae for wastewater treatment are enriched, and the concentration of suspended active sludge is reduced; and biological stuffing has a function of fixing certain organic matters easily causing membrane pollution and is capable of effectively improving the degradation ability of the reactor to organic pollutants.

The invention relates to an ultrasound vibration type rolling type ultrafiltration membrane group device and an ultrafiltration device thereof. The ultrasound vibration type rolling type ultrafiltration membrane group device comprises a rolling type ultrafiltration membrane, a membrane shell and ultrasonic wave oscillators, wherein the rolling type ultrafiltration membrane is arranged in the membrane shell, the ultrasonic wave oscillators are arranged on an end socket and are arranged outside the membrane shell in horizontal and vertical directions, and the improvement of a membrane flux and deceleration of membrane pollution by the ultrasound vibration can be enhanced; and the rolling type ultrafiltration membrane comprises a ultrafiltration membrane group, a water collecting pipe, the end socket and a flow channel, and at least one ultrafiltration membrane group and the flow channel are successively overlaid so as to be rolled on the water collecting pipe and arranged in the membrane shell after being sleeved with the end socket. According to the ultrasound vibration type rolling type ultrafiltration membrane group device provided by the invention, the flux is large, the antifouling property is good, the service life is long, and the cost is low.

The invention discloses an electric flocculation water treatment technology for retarding pole plate passivation, and belongs to the technical field of water treatment. The technology comprises the following steps: adding electrolyte sodium chloride to wastewater one time before electrolysis of each batch of wastewater in an intermittent electric flocculation process, so that the mean mass concentration of the sodium chloride inside an electrolytic cell is 40-200mg/L; outputting an intermittent electric flocculation voltage by a constant-pressure control power supply; and setting the voltage of each pair of electrodes to be 3-10V, the distance between the pole plates to be 5-15mm and the electrolytic time to be 30-90 minutes by adopting a direct current power supply. The problem of electrode surface passivation is improved and removed by in-situ generation of an acid substance on the electrode surface. The electric flocculation water treatment technology is free of feeding acid and base, and free of dismantling the electrodes to clean, and has the advantages of being simple in structure, and convenient to operate.

The invention relates to a metal structure tungsten diselenide/redox graphene composite structure and a preparation method thereof. Firstly, a precursor aqueous solution of a WSE2 film is prepared; a monolayer graphene oxide aqueous solution and citric acid are added into the precursor aqueous solution of the WSE2 film to obtain a WSe2/RGO precursor aqueous solution; then, after hydrothermal treatment at 165-180 DEG C, a thin-film metal structure tungsten diselenide/redox graphene composite structure is obtained on a polyethylene naphthol substrate inserted into the WSe2/RGO precursor aqueous solution, and a precipitate in a residual solution after the hydrothermal treatment is filtered, washed and dried to obtain a powder metal structure tungsten diselenide/redox graphene composite structure. According to the invention, the preparation of metal structure tungsten diselenide can be realized through a one-step synthesis process through a hydrothermal method, and the preparation method is not only simple in process, but also has the excellent characteristics of low cost of used raw materials and equipment, low energy consumption, high efficiency and the like.

The invention discloses a high-toughness and high-rigidity rolling bearing, comprising a bearing outer ring, a rolling body and a bearing inner ring; an outer raceway surface of the bearing inner ring comprises three bumps protruding towards the outer side of the bearing inner ring, the three bumps are sequentially connected, and a concave part is formed in a connecting part of every two adjacent bumps; both of the bumps and the concave parts are arcs; the three bumps are evenly distributed on the outer raceway surface along the circumferential direction of the bearing inner ring. The bearing inner ring is made from the following components by weight percent: 0.6-0.7% of C, 0.15-0.35% of Si, 0.4-0.5% of N, 0.09-0.12% of B, 0.3-0.4% of Mn, 0.1-0.2% of V, 0.1-0.15% of W, 0.18-0.22% of Mo, 0.12-0.15% of Nb, 0.22-0.26% of Al, 3-4% of Cr, 0.07-0.10% of Ce and the balance of Fe.

The invention discloses a quenching-tempering heat treatment method for large-scale module die steel. The method comprises the following steps of carrying out heating; carrying out heat preservation;carrying out water-cooling and air-cooling alternate quenching multiple times; and carrying out high-temperature tempering. The method has the advantages that a water-quenching air-cooling mode is adopted, water-lifting air-cooling is carried out multiple times, self-tempering is carried out, the surface structural transformation stress is eliminated, the cooling strength is within oil quenching and water quenching, and therefore through quenching of a large-scale module is ensured, and meanwhile, water-quenching cracking is avoided; the perlitic transformation caused by water quenching is avoided, then water lifting is carried out multiple times to decrease the cooling speed, so that the quenching stress is decreased, and therefore the cooling speed of a high-temperature section is increased, and meanwhile, quenching cracking is also prevented; and when the temperature of martensite cooled to 1.2738 begins to change temperature, air cooling is carried out, so that the forming speed ofthe martensite is decreased, and therefore the structural stress can be greatly decreased, and cracking of a low-temperature section can be avoided.

The invention discloses a high-efficiency energy-saving integrated MBR (membrane bioreactor) apparatus and a sewage treatment method thereof, which belong to the field of sewage treatment. The apparatus comprises a reciprocating driving apparatus and a traveling apparatus, wherein the reciprocating driving apparatus consists of a driving motor and a slider-crank mechanism, the reciprocating driving apparatus is connected with the traveling apparatus of an MBR membrane assembly by virtue of a slide connecting rod, sludge-water mixed liquid in a membrane pool and the MBR membrane assembly are enabled to make regular and controllable relative movement so as to clean a membrane, and little bottom pulse aeration scrubbing is also adopted for assisting. By combining two membrane pollution preventing ways of reciprocating moving scrubbing and aeration scrubbing, the pollution of the MBR apparatus both in the horizontal direction and the vertical direction is effectively controlled, the energy consumption input of the two ways can be adjusted according to the real operation condition, and the membrane pollution is alleviated in an initiative and controllable way. Meanwhile, by controlling appropriate operation parameters, a best energy-saving effect is achieved.

The invention relates to the field of gold electrorefining purification, in particular to an auxiliary reagent suitable for rapid electrorefining of high-silver alloyed gold. The auxiliary reagent QJ-D-1 for gold electrolysis is a mixture composed of 15-80% of ammonium chloride, 15-80% of potassium chloride, and 0.5-5% of sodium methylene dinaphthalene disulfonate serving as a dispersing agent. According to the invention, the severe anodic passivation phenomenon in the electrolysis process of the high-silver alloyed gold is reduced, the electrolysis efficiency of the high-silver sample is improved, the concentration of hydrochloric acid in the electrolyte is reduced to lower than 2 mol/L, and the environmental pollution is reduced. Alloyed gold with Ag content of 5-10% is directly electrolyzed, the quality of the product obtained after one-time electrolysis meets the requirements of national 1# standard gold and 2# standard gold, the yield of cathode gold within 40 hours is approximate to 70%, the residual anode rate is less than 20%, and the metal balance recovery rate is 99.92%.

The invention provides a preparation method of copper oxide/titanium dioxide composite nanotube arrays. The copper oxide/titanium dioxide composite nanotube arrays have the methyl orange decomposing capacity in the ultraviolet light. The preparation method of the copper oxide/titanium dioxide composite nanotube arrays includes the following steps that (1) anodizing is conducted, specifically, titanium dioxide nanotube arrays are prepared through an anodic oxidation method; (2) chemical precipitation is carried out, specifically, the nanotube arrays are soaked in copper salt and alkali liquor alternately, and copper oxides are doped; and (3) annealing is carried out, specifically, the nanotubes compounded with the copper oxides after the reaction are subjected to annealing, so that an anatase type titanium dioxide nanotube catalyst is obtained. The nanotube catalyst can be used repeatedly; the preparation method is simple, low in cost and free of pollution, and other preparation processes are better in energy saving; and a cathode of an electrolytic tank is low in cost and can be used repeatedly. According to the preparation method, anatase crystal type titanium dioxide is obtained after the nanotube arrays are subjected to annealing at the proper temperature, the catalytic efficiency is higher, the structure is firmer, and the situations that after long-term use, nanotube arrays adhering to a titanium sheet substrate fall down and the catalytic efficiency is greatly reduced are avoided.

The invention discloses a preparation method of theaflavins-rich black tea, and belongs to the technical field of preparation of black tea. The preparation method is characterized by comprising the following steps: (1) picking leaves; (2) withering: evenly spreading the picked fresh leaf raw material on a leaf containing curtain of a withering trough, introducing natural wind, and using red light,blue light and yellow light to perform light compensation withering treatment in different time periods to obtain withered leaves; (3) rolling: putting the withered leaves into a rolling machine forrolling, and horizontally cutting the rolled leaves in a horizontal cutting machine to obtain rolled cut leaves; (4) unblocking; (5) fermenting: putting the rolled leaves, subjected to unblocking, into a fermentation chamber for carrying out stacking fermentation, and introducing negative oxygen ions in a fermentation process so as to obtain tea base; (6) drying: firstly, carrying out high-temperature inactivation and drying on the tea base, then drying sequentially by using gross fire and full fire, and spreading for cooling to obtain raw tea of the theaflavins-rich black tea. The invention aims at providing the preparation method, which is scientific in process and optimized in process, of the theaflavins-rich black tea; the method is used for preparing the theaflavins-rich black tea.

The invention discloses an atmosphere purification method and purification apparatus. The purification apparatus comprises a negative pressure generation device used for generating negative pressure in a purification channel, a whirlwind transforming device used for transforming atmosphere which is introduced into the purification channel because of the negative pressure into an artificial whirlwind, and a wind driven generator used for transforming a part of the wind power of the artificial whirlwind into electric power before and/or after the artificial whirlwind enters a purification unit through the purification channel. Through the atmosphere purification method and the purification apparatus, the outer atmosphere is transformed into the artificial whirlwind and the artificial whirlwind enters the purification unit for removal of haze particles in the atmosphere and purification of the atmosphere; the negative pressure generation device can generate the negative pressure in the purification channel, and can continuously introduce the outer atmosphere into the purification channel; and redundant wind power of the artificial whirlwind is transformed into electric power. According to the cycle, atmosphere pollution in an open system is purified while electricity is generated; green renewable energy sources are generated; and running costs of the purification device are reduced.

The invention relates to a storage battery technology, and specifically discloses a solar photovoltaic battery which can be used in a solar photovoltaic environment. According to the invention, a nano-grade silicon solution and a phosphate solution are added to the electrolyte of the battery. According to the invention, with the modification of the characteristics of the electrolyte, a sulfidization phenomenon is prevented from occurring, and the service life of the solar photovoltaic battery can be prolonged. The battery is suitable for small-current solar energy charging and large-current discharging. Theoretically, the service life of the battery reaches 15 years, and the temperature adaptability of the battery is good.

The invention belongs to the field of household appliances, particularly relates to an efficient quick-heat type household electric water heater. The household electric water heater comprises an outershell, wherein an inner container is disposed within the outer shell, a thermal insulation layer fills between the inner container and the outer shell, a partition plate is fixedly mounted on the inner side wall of the inner container, the partition plate separates the partition plate into a water storage chamber and a warming chamber, the partition plate is internally provided with a communicating pipe which is vertically arranged in a penetrating mode, the volume of the heating chamber is much smaller than the volume of the water storage chamber, a heating rod is fixedly mounted on the sidewall of the heating cavity, a pressure-sensitive resistor is fixedly mounted on the inner side wall of the outer shell, a flexible plate is arranged on the position, at the pressure-sensitive resistance position, of the side wall of the inner container, the heating rod is electrically connected with an external power supply through a pressure-sensitive resistor, a vertically-arranged heating pipeis arranged in the heating cavity, and the upper end of the heating pipe penetrates through the partition plate and extends into the water storage cavity. According to the household electric water heater, the water in each area in the water storage cavity can be rapidly and uniformly heated through the high-pressure steam, the heating speed is high, and the efficiency is high.

The invention relates to a uniformly-compounded tin sulfide-nickel sulfide heterogeneous nanosheet array structure loaded on the surface of a conductive substrate, and a preparation method thereof, and belongs to the technical field of new energy material preparation. The main body part of the product is a uniformly-compounded tin sulfide-nickel sulfide nanosheet, and vertically and closely growson the surface of a conductive substrate to form an array structure. The one-step solvothermal preparation method adopts nickel chloride, stannic chloride and thioacetamide as a nickel source, a tin source and a sulfur source respectively, a mixed solution of alcohol and water as a solvent and the conductive substrate as a skeleton, and effectively controls the growth rate of nickel sulfide by controlling the addition amount of water in order to achieve the synthesis of the product. The product obtained by the method has the advantages of high yield, high purity, controllable morphology and nopost-treatment; and the method has the advantages of simple devices and processes, strict and controllable synthesis growth conditions, high product yield, low cost, and clean and environmentally-friendly production process. Additionally, the product has an excellent electrochemical energy storage performance.

The invention discloses a preparation method of a double-layer composite low-cost lithium-rich manganese-based precursor, and belongs to the technical field of lithium battery material preparation. The general formula of the lithium-rich manganese-based precursor is (NixMn (1-x)) OH2 (at) CO3, wherein x is more than or equal to 0.1 and less than or equal to 0.3. Preparing a nickel-manganese mixed solution and adding a complexing agent with a certain concentration; preparing a mixed alkali solution of sodium hydroxide and sodium carbonate; adding a buffer solution into the reaction kettle as a base solution; a first-stage reaction: adding the nickel-manganese mixed solution, ammonia water and a sodium hydroxide solution into a reaction kettle in a parallel flow manner, and carrying out a co-precipitation reaction; a second-stage reaction: after the particle size grows to 5 microns, replacing the sodium hydroxide solution with the mixed alkali solution prepared in the step (1), and closing the ammonia water; continuously reacting; controlling the temperature, stirring speed and feed liquid flow in the reaction process to be constant, and introducing nitrogen in the whole reaction process; according to the invention, the problems of uncontrollable pH and easy oxidation in the reaction process are solved, and the obtained lithium-rich manganese-based precursor has the advantages of high sphericity, high tap density and narrow particle size distribution.

The invention discloses phosphorus and nitrogen synergistic self-flame retardant environment-friendly wood coating. The phosphorus and nitrogen synergistic self-flame retardant environment-friendly wood coating is prepared from the following components is percentage by weight: 35.0 to 70.0 percent of acrylic emulsion containing phosphorus nitrogen flame retardant groups, 0.5 to 5.0 percent of a dispersing agent, 0.2 to 2.0 percent of a pH regulating agent, 0.1 to 0.5 percent of a defoaming agent, 0.1 to 0.5 percent of a thickening rheological agent, 2.0 to 15.0 percent of a coalescing agent, 0to 5.0 percent of water-based colour paste, 0 to 10.0 percent of other functional auxiliary agents, 0.1 to 0.5 percent of a sterilizing agent, 10.0 to 25.0 percent of deionized water and 5.0 to 30.0percent of filler. The phosphorus and nitrogen synergistic self-flame retardant environment-friendly wood coating takes the acrylic emulsion containing the phosphorus nitrogen flame retardant groups as a main component of a base material of the coating, so that the coating can have self-flame retardance without adding other flame retardants; flame-retardant phosphorus and nitrogen elements and theacrylic resin are bonded through chemical bonds and are difficult to dissociate, so that the coating has lasting flame retardance; the phosphorus and nitrogen synergistic self-flame retardant environment-friendly wood coating does not contain any halogen, is harmless to human bodies, and is healthy and environmentally friendly.

The invention belongs to the field of double-roller cast rolling, and particularly relates to a side sealing plate applied to double-roller cast rolling. Nodulation on the working face of the side sealing plate of the double-roller cast-rolling molten pool is not beneficial to process stability, and at present, reduction of resistance borne by cast-rolled metal passing through the working face of the side sealing plate and/or change of the wettability of the working face of the side sealing plate is a crucial method. The invention provides a side sealing plate applied to double-roller cast rolling.

The invention discloses blood pressure-reducing noddles containing modified starch and a preparation method thereof. The noddles are prepared from the following raw materials in parts by weight: 20-60parts of buckwheat, 40-80 parts of wheatmeal,0.5-1.5 parts of fruit juice concentrate, 2-8 parts of the modified starch, 1-3 parts of vegetable oil powder and 50-100 parts of water, wherein the modified starch is prepared by mixing corn starch and potato starch according to a mass ratio of (3 to 5) to1 and modifying; the vegetable oil powder is prepared by mixing wheatgerm oil powder, perilla oilpowder and plukenetia volubilis linneo oil powder according to a mass ratio of (2 to 6) to 1 to 1. The preparation method of the blood pressure-reducing noddles containing the modified starch is simple and practicable; the noddles have the advantages of tough, chewy and smooth taste, fine and smooth tissue structure, and boiling resistance, and have very good blood pressure-reducing effects at the same time.