35results about How to "Strong agitation" patented technology

The invention relates to a gas liquid reaction kettle adopting a spherical crown-shaped micropore corundum gas supply apparatus. The gas liquid reaction kettle comprises a reaction kettle body and a gas supply device, the reaction kettle body comprises a main kettle body, the gas supply device comprises the gas supply apparatus, the gas supply apparatus is arranged in the main kettle body, and thetop surface of the gas supply apparatus is a spherical surface; the gas supply apparatus is in a spherical crown shape and is of an integrated structure, and upper and lower surfaces of the gas supply apparatus release gas simultaneously; the gas liquid reaction kettle has the advantages of a large gas supply amount, high stirring intensity, low resistance, high efficiency, low consumption, reliable operation, no blockage, ageing resistance, corrosion resistance, long service life and the like; in addition, the superficial area of contact between gas and liquid is greatly increased through alarge number of fine bubbles, the reaction speed is increased, and the reaction efficiency is improved; in addition, during gas supply, a high self-stirring effect of a large number of small bubbles is achieved, a stirring device of a conventional gas liquid reaction kettle does not need to be arranged, the structure can be simplified, the cost is reduced, and if the stirring device is arranged, the speed and efficiency of a gas liquid reaction can be further improved.

The invention discloses an immersed combustion treatment system for refuse leachate, which includes: a pretreatment part, which includes a pretreatment tank and a flocculation reaction apparatus communicated therewith; a combustion and evaporation part, which includes an immersed incinerator, a tubular condenser, and a concentrate press filter device, wherein the immersed incinerator is provided with a combustion chamber comprising a fuel gas inlet, a combustion-supporting gas inlet, and an igniter, a steam outlet is disposed on the upper end of the immersed incinerator and the bottom of the immersed incinerator is conical in shape and is provided with a concentrate discharge outlet, after treatment in the flocculation reaction apparatus, a fluid flows into the immersed incinerator, then the tubular condenser is connected to the immersed incinerator through the steam outlet and the concentrate press filter device is connected to the immersed incinerator through the concentrate discharge outlet; a deep processing part, which includes an alkaline gas washing tower, an acidic gas washing tower, and a Fenton reactor, wherein the alkaline gas washing tower is connected to the gas outletof the tubular condenser, the acidic gas washing tower is connected to the alkaline gas washing tower, and the Fenton reactor is connected to a condensate discharge outlet on the tubular condenser.

The invention discloses an impeller of an externally mixed type self-priming pump, relating to pumps. A front cover plate and a rear cover plate are arranged on the impeller, blades are arranged between the front cover plate and the rear cover plate, and annularly cut belts are arranged on the external diameters of the cover plates. As the annularly cut belts are arranged on the external diameters of the cover plates, the blades at the parts of the annularly cut belts are not covered by the cover plates, the blades are exposed, and the contact area of the blades with liquid is large. When the pump starts to work, gas and liquid are well mixed by strong agitation force in the pump, gas discharge time is short, and water is quickly pumped. The impeller is suitable for externally mixed type self-priming pumps.

The invention provides a normal-pressure leaching method for high-grade nickel matte and nickel sulfate.The method comprises first normal-pressure leaching and second normal-pressure leaching, ultrasonic waves and oxygen are applied in the first normal-pressure leaching process and the second normal-pressure leaching process, on one hand, no hydrogen peroxide is consumed, the leaching cost is low, and the risks of transportation, storage and process management and control are avoided; on the other hand, the stability of the raw materials in the leaching process is destroyed, the raw materials are prevented from being wrapped by leaching liquid, the activity is prevented from being reduced, the Ni leaching rate in the normal-pressure leaching process is increased, the material throughput of a high-pressure leaching system is greatly reduced, the volume design quantity of an autoclave is small, and production control is safer; and finally, oxygen is promoted to be in efficient contact with the raw materials and hydrogen sulfide generated in the leaching process, hydrogen sulfide can be rapidly converted into sulfuric acid, the treatment risk of hydrogen sulfide gas is effectively reduced, and the leaching process is safer.

The invention discloses a multichannel combined aeration tower which is particularly applicable to an underground water iron and manganese removal process and solves the problems of low oxygen dissolving efficiency, low effluent DO (dissolved oxygen) concentration, large occupied area and high energy consumption of an existing aeration device. The multichannel combined aeration tower comprises a water inlet pipe, a water distribution device, a tower body, a packing group, air pipes, blast aeration devices and a water outlet pipe, a water outlet of the water distribution device is formed in the top of the tower body, a water inlet of the water distribution device is connected with the water inlet pipe, the packing group is arranged inside the tower body, the blast aeration devices are symmetrically arranged on the lower portion of the tower body and connected onto the outer wall of the tower body through the air pipes, the water outlet pipe is arranged at the bottom center of the tower body, and the bottom of the tower body is inclined downwards from the periphery to the center. The multichannel combined aeration tower is used for secondary aeration in a secondary filtering oxidation process with iron and manganese coexistence.

The invention discloses a method for producing rose vinegar by adopting a pneumatic stirring way. The method comprises the steps of carrying out immersion cleaning on rice, steaming the cleaned rice,cooling the cooked rice, building a nest, flooding, adding water, fermenting, aging, squeezing and sterilizing; a tank is in a cylinder shape, an opening is formed in the upper end of the tank, and the diameter-height ratio D/H of the cylinder part of the tank is equal to 1 to (0.8-1); one end of a compressed air pipeline is connected with an air inlet, and the other end of the compressed air pipeline is connected with an air nozzle arranged at the lower part of mash in the tank; a grass cover is arranged at the opening formed in the upper end of the tank; step of fermenting comprises the following process: (1) medium-frequency and large-pneumatic stirring intensity fermentation control in the early stage; (2) high-frequency and medium-pneumatic stirring intensity fermentation control in the middle stage; (3) low-frequency and small-pneumatic stirring intensity fermentation control in the late stage. The method for producing the rose vinegar by adopting the pneumatic stirring way can enlarge the production scale, increase the yield, improve and stabilize the quality of the rose vinegar and lighten the labor intensity.

The invention relates to a method for producing high-purity selenium through ultrasonic enhanced reduction, and belongs to the technical field of materials. The method comprises the following steps: carrying out cascade inert distillation on selenium oxide to obtain high-purity selenium oxide, dissolving the high-purity selenium oxide in dilute sulfuric acid to obtain a seleninic acid solution, carrying out ultrasonic enhanced reduction reaction on the seleninic acid solution, carrying out solid-liquid separation, and washing and drying the solid to obtain high-purity selenium. According to the method, local stirring is enhanced by utilizing reducibility. H generated by ultrasound and a high-temperature and high-pressure environment, a larger reduction potential is achieved, seleninic acid is reduced to generate high-purity selenium, the production cost of the high-purity selenium is low, the purity of the obtained selenium is high, and operation conditions are friendly.

The invention discloses a method for smelting and reducing iron ores through a converter steelmaking system and belongs to the technical field of iron and steel metallurgy. After the converter slag splashing converter protection process, molten iron is mixed into a converter firstly, then the iron ores and a slag forming agent are added in batches, wherein the adopted slag forming agent comprises limestone, dolomite and lime; and oxygen-enriched air and pulverized coal are simultaneously top-blown through an oxygen lance, the thickness of foaming slag is controlled by adjusting the charging speed, and the iron ores are smelted and reduced. The method is based on the modern mature technology of oxygen converters, the iron ores are smelted and reduced in the converter process, and the problems of too fast lining erosion and high energy consumption cost existing in iron ore direct smelting and reducing at present can be solved.

The invention relates to a method of swinging electric arc welding with double hollow cathodes and belongs to the field of welding methods. The two identical hollow tubular cathodes are arranged and connected with two welding power supplies and two air extractors correspondingly. By means of the air extractors, a negative pressure state is formed in a cavity and an electric arc central area of one tubular cathode, and under the action of atmospheric pressure, a constrained electric arc is formed while the other electric arc is in the free state; the situation is kept for a certain period of time, the constrained electric arc is recovered into the free state while the other electric arc turns into the constrained state, and the situation is repeated, so that the two electric arcs are always in the form that one is in the free state while the other one is in the constrained state. A welding wire is fed in from the space between the two cathodes, and molten drops swing in a reciprocating mode under the condition that the free state and the constrained state occur alternately. The method increases the welding speed, increases the current bearing capacity, reduces welding deformation, generates a vibrating stirring effect on a molten pool, prevents thick and big grains from occurring, and improves the quality of weld joints. The heat input of the electric arcs to workpieces is reduced, and the range of a heat affected zone is narrowed.

The invention discloses a heating stirrer for low viscous reagents. The heating stirrer comprises a supporting seat and a mounting seat. A motor is arranged in the mounting seat, an opening is arranged at the upper end surface of the mounting seat, and a rotating plate is arranged on an extension segment of the output end of the motor. A plurality of magnetic strips are arranged on the upper end surface of the rotating plate, a through hole is arranged in the upper end surface of the supporting base, a heat conducting plate is arranged on the upper end of the through hole, and a non-magnetic heat insulation board is arranged on the lower end of the through hole. A plurality of heating pipes are arranged in the heat conducting plate which is arranged on the through hole, a base is arrangedon the inner wall of the bottom of a cup body, magnetic blocks corresponding to the magnetic strips are installed on the base, and a plurality of stirring blades are fixed on the upper surface of thebase. By accessing a power supply at an electric socket, the heating pipes start to generate heat, and the heat is transferred to the cup body by utilizing the high thermal conductivity of the heat conducting plate, and since the non-magnetic heat insulation plate is disposed at the lower end of the through hole, the heat generated by the heating pipes is prevented from being transferred downwardsto the mounting seat and further to prevent normal operation of the motor from being disturbed.

The invention belongs to the technical field of material pre-mixing and emulsifying, and particularly relates to a high-viscosity material fine emulsifying belt pre-mixing system. The system comprisespre-mixing equipment and emulsification equipment, wherein the pre-mixing equipment comprises a pre-mixing assembly and a synchronous feeding assembly; the synchronous feeding assembly comprises a mixing pipe, wherein a sealed cavity type hollow interlayer is formed in the pipe wall of the mixing pipe, and feeding holes communicated with the hollow interlayer and the mixing pipe are formed between the hollow interlayer and the outer wall of the mixing pipe; the hollow interlayer is of an annular shape coaxial with the axis of the mixing pipe, and equipartition holes communicated with the hollow interlayer and the mixing pipe are formed between the hollow interlayer and the pipe cavity wall of the mixing pipe; the equipartition holes surround the axis of the mixing pipe and distributed inthe pipe cavity wall of the mixing pipe in sequence; the emulsification equipment comprises an emulsification box, a mechanical sealing box, a bearing box, a connecting frame and a power motor. The high-viscosity material fine emulsifying belt pre-mixing system can effectively ensure the mixing quality of the product while ensuring the efficiency of premixing and subsequent emulsification, therebymaximally ensuring the actual production benefits of a manufacturer.