3232results about How to "Improve mixing uniformity" patented technology

The invention provides a blending system of a fracturing fluid. The blending system comprises a suction pump, a mixer, a mixing tank, a secondary mixer which is arranged between the mixer and the nixing tank and is used for mixing the fracturing fluid again, and a parallel-connection water channel, wherein one end of the parallel-connection water channel is communicated with the suction pump, the parallel-connection water channel and a mixing water channel of the mixer are connected in parallel, and the other end of the parallel-connection water channel is communicated with the secondary mixer. The blending system provided by the invention has the advantages that the parallel water channel is additionally arranged and is connected with the mixing water channel in parallel, a base solution is capable of simultaneously entering two routes, namely the mixing water channel and the parallel-connection water channel, not all of the base solution enters the mixing water channel, a condition that the limitation on blending efficiency is caused by the relatively small flow of the mixing water channel is avoided, the blending time is shortened, the blending energy consumption is reduced, the fracturing fluid is formed through multi-time blending in a double-route manner, the mixing uniformity is improved, and the quality of the fracturing fluid is further optimized. The invention also provides a fracturing fluid blending technology suitable for the blending system of the fracturing fluid.

The invention discloses a device and method for preparing nitrogen foam cement. The preparing device comprises a foam cement producer, a liquid nitrogen evaporator, a liquid nitrogen plunger pump, a foam liquid plunger pump, a foam liquid tank, a heat exchange system, a liquid nitrogen pipeline, a high-pressure cement paste pipeline, a first pipeline, a foam cement discharge pipeline and a densitydetecting device. The heat generated by a power unit, a hydraulic system and other devices in a nitrogen foam well fixing device is recovered through the heat exchange system, the recovered heat is used as a heat source of the liquid nitrogen evaporator, energy conservation and environment protection are realized, the energy utilization rate is high, and equipment input is low. Liquid nitrogen and foam liquid are pressurized through a high-pressure liquid nitrogen plunger pump and a high-pressure foam liquid plunger pump, the mixing uniformity is increased, and the density of foam cement is reduced. The density of the foam cement is detected in real time through the density detecting device, the flow of the liquid nitrogen and/or foam liquid is adjusted according to the density, and the density is simply controlled. By arranging a clear water tank, after operation ends, the equipment and pipelines are flushed, and the service life is polonged.

The invention discloses a preparation method of a lithium ion battery ternary cathode material. According to the preparation method, full grinding is performed through a colloid mill to improve the reactivity of a precursor and a lithium salt and the uniformity of a mixed material; and a carbon chain organic additive is added in the process of grinding to improve the viscosity of a sizing material, inhibit raw material segregation in the process of drying, quickly balance the temperature of each part of a system in the process of high-temperature reaction and inhibit agglomeration among particles, so that a uniform-appearance and regular mono-crystal ternary cathode material is obtained. Meanwhile, the ternary cathode material is doped and subjected to surface coating modification, so that the structure of the material is stabilized, the side reaction between the material and electrolyte is inhibited, and the high-temperature cycle performance of the material is improved.

The invention discloses a dilution sampling system and a sampling method of fixed source particles and volatile organic compounds, and belongs to the technical field of environmental monitoring. The dilution sampling system comprises a smoke introducing system, a diluting system, a stopping chamber, a sample collection system and a control and data collection system. The system can simulate the nucleation, condensation and coagulation processes of the fixed source smoke after being discharged to the atmosphere, can adopt a grain size classification sampling method of atmospheric particulate matters to sample the particulate matters, can adopt the atmospheric volatile organic matter sampling method to sample the volatile organic matters, and can realize the dynamic control of dilution ratio and the dynamic stopping time. Each part of the system has the advantages of high integration, high stability, automation in control, and easiness in operation.

The invention discloses a circumferentially graded low-pollution combustion chamber with multiple middle spiral-flow flame stabilizing stages. The combustion chamber has a single annular cavity structure; a low-pollution combustion organization mode in which air grading is matched with fuel oil grading is adopted; all fuel gas is supplied by a duty stage, a middle stage and a main combustion stage; and fuel oil grading supply proportion is controlled accurately according to the operating condition of an engine and the requirement on stable low-pollution combustion. The duty stage has a combined structure in which two-stage axial spiral flow is matched with a venturi tube, and a formed low-speed reflux region can support stable combustion of the combustion chamber; the middle stage has a combined structure in which a plurality of single-stage axial spiral flow circumferentially and uniformly distributed on the same circumference in the same axial cross section are matched with the venturi tube, and a formed middle flame stabilizing stage combustion region is used for intensifying and stabilizing flame in the main combustion stage; and the main combustion stage has a combined structure in which a plurality of single-stage axial spiral flow circumferentially and uniformly distributed on the same circumference in the same axial cross section are matched with the venturi tube, so that an oil and gas mixed poor-oil premixing and pre-evaporation combustion mode is intensified and the emission of pollutants is further reduced greatly.

The invention discloses a nickel-cobalt-aluminum ternary precursor as well as a preparation method thereof and a preparing anode material and a method. The preparation method comprises the following steps: dissolving soluble salts of Ni and Co into ammonia water so as to prepare a Ni and Co ammonia complex ion solution as a complexing agent solution, adding a complexing agent into an aluminum salt solution so as to prepare an Al complex ion solution as an aluminum source solution, combining and adding the Ni and Co soluble salt solution, a precipitant solution, the complexing agent solution and the aluminum source solution into a reaction kettle, controlling a reaction pH value and reaction temperature, controlling the reaction time to be at least greater than 10h, performing solid-liquid separation on slurry obtained through reaction, and washing and drying the obtained solid, thereby obtaining the nickel-cobalt-aluminum ternary precursor. A nickel-cobalt-aluminum ternary anode material can be prepared from a mixture of the precursor and a lithium salt through high-temperature thermal treatment in the presence of air or oxygen. The mixing uniformity of three elements of Ni, Co and Al can be effectively improved, and the tap density of the precursor material can be improved, and the spherical degree of granules can be increased.

The invention discloses a health-care compound feed for prawns and a production method thereof. The invention aims to provide a health-care compound feed for prawns, which can improve immunity in the prawns, utilization rate of feed and water quality, and a production method thereof. The formula of the raw material comprises the following components in part by weigh: 1 to 6 parts of imported white fish meal, 20 to 25 parts of steamed fish meal imported from Taiwan, 2 to 8 parts of steamed fish meal made in China, 18 to 22 parts of high-gluten wheat flour, 15 to 22 parts of peeled soybean pulp, 8 to 15 parts of peanut cakes, 2 to 6 parts of defatted shrimp meal, 1 to 3 parts of beer yeast cream, 1 to 3 parts of soyabean lecithin oil, 0.5 to 2 parts of refined fish oil, 0.5 to 2 parts of monocalcium phosphate and 1 to 4 parts of additive premix. The production method comprises: crushing, primary material mixing, secondary material mixing, hardening and tempering, granulating, braising, aging, drying, cooking, sieving and packaging. The invention can improve the breeding yield of pawns, reduce discharge pollution, improve water environment and the like.

This invention relates to an impact flow reactor used for liquid phase reaction. The reactor is cylindrical form, pipe or quadratic structure, two draft tubes are fixed between reactors, and one or two pumps are set out of the reactor, the exit of the pump is corresponding set at feed side of the tube. The reactant impact with each other after conveyed by materials pump and high speed flow by draft tubes, so the mixing of the reactant is availably improved. The reactor in this invention maintains the advantage of high efficiency mixing and homogeneous reaction of the existing reactor, and some disadvantages of existing reactor is avoided. Its structure plan is facilitated and cost is reduced because of the replacement of pump cycling outside of the reactor of the screw propeller type structure, and engineering problem of shake, radial sealing failure brought by the screw propeller type structure is reduced. It is easy for maintenance, and its failure rate is low, so it is propitious to reaction process of industry scale.

The invention relates to the composite technical field, in particular to a manufacturing method of metal matrix nanocomposites with high toughness. According to the manufacturing method, the size, distribution, interface structure of reinforcement bodies and the metal matrix micro-structure are effectively controlled by the combined composite process of twice ball-milling, discharging plasma in situ reaction sintering and the large strain plastic deformation technology, so that ultra-fine grain metal matrix composites with evenly distributed in situ authigenic nanoparticles and good interface combination are manufactured, and good matching of intensity and toughness is obtained.

The invention relates to a micro-nano bubble oxygenation drip irrigation system and a micro-nano bubble oxygenation drip irrigation method. The system comprises a water inlet main pipe, wherein the water inlet main pipe is connected with two branches in parallel, and a first branch is sequentially connected with a water pump, a pressure stabilizing tank and a pipe pump; a spray nozzle which stretches into the pressure stabilizing tank is arranged at an inlet end of the pressure stabilizing tank, and a pressure stabilizing valve is arranged at the top of the pressure stabilizing tank; a pressure gauge is arranged on an outlet pipeline of the pipe pump; a flow regulating valve and a pressure gauge are sequentially connected onto a second branch; the two branches converge to form a water outlet main pipe; the position, at an inlet of the water pump, of the first branch is connected with an outlet of an air pump through an electromagnetic valve and an inlet of the air pump is respectively connected with a pure oxygen source and an ozone source; a one-way valve and a gas flowmeter are sequentially arranged between the pure oxygen source and the air pump; a one-way valve and a gas flowmeter are sequentially arranged between the ozone source and the air pump; the pipe pump is electrically connected with a frequency conversion cabinet, the frequency conversion cabinet is electrically connected with a power distribution box through an electromagnetic valve and the power distribution box is electrically connected with a programmable controller; the flow regulating valve, the pressure gauges, the electromagnetic valves, the gas flowmeters, the water pump, the pipe pump and the power distribution box are respectively and electrically connected with the programmable controller.

The invention provides a blending tank of automatic adding equipment for powdered activated carbon. The blending tank is arranged at the front end of the adding equipment; a stirring device is arranged in the blending tank; powdered activated carbon is fed into the blending tank through a feeding device, stirred and made into carbon-in-pulp; and the carbon-in-pulp is conveyed to a coagulation tank and added through the adding equipment, wherein the blending tank is a two-segment type blending tank; a feeding port of the feeding device is connected with a first blending tank; a flow-reducing type impeller stirring device is arranged in the first blending tank; a baffle is arranged between the first blending tank and a second blending tank; the first blending tank and the second blending tank are communicated through the water-passing end face of the bottom of the baffle; a paddle-board type stirring device is arranged in the second blending tank; and a material outlet of the second blending tank is connected with the adding equipment. The blending tank has the advantages that the blending tank adopts the two-segment type blending tank is adopted, improves the mixture uniformity of the powdered activated carbon and water through primary stir and then intensive stir so as to achieve deep blending, is provided with a flow disturbing baffle to ensure the intensive mixing of the activated carbon and water in a turbulence state, produces no dust in the process of adding dust, and improves working environment.

The invention discloses a mixer which comprises a cylindrical shell, a fuel gas mixing core and an EGR mixing core. An air inlet is formed in one end of the cylindrical shell. A mixed gas outlet is formed in the other end of the cylindrical shell. A first cavity and a second cavity communicated with each other are formed in the cylindrical shell. A fuel gas inlet is formed in the side wall, close to the first cavity, of the cylindrical shell. A waste gas inlet is formed in the side wall, close to the second cavity, of the cylindrical shell. The fuel gas mixing core is sleeved with the first cavity. Fuel gas flowing through the fuel gas inlet and air flowing through the air inlet can enter the fuel gas mixing core so as to be mixed to form fuel gas mixed gas. The EGR mixing core is sleeved with the second cavity. The fuel gas mixed gas and waste gas flowing through the waste gas inlet can enter the EGR mixing core and are mixed and exhausted through the mixed gas outlet. By the adoption of the mixer, the integration of parts of an engine is effectively improved, the mixing evenness of fuel gas, air and waste gas in the gas engine is improved, and emission of harmful substances of the engine is reduced.

The invention relates to a porous superfine polyamide 6 fully-drawn yarn, a preparation method thereof, and equipment thereof. According to the invention, existing FDY production equipment is adopted. A raw material polyamide 6 is sliced and dried; an additive is added on line; the material is subject to screw extrusion and melt extrusion; the material is then cured with a gradually cooling manner and a circular air blow cooling manner; with a reasonably selected spinning temperature of 259-262 DEG C, an air temperature in the circular air blowing process of 19-23 DEG C, a humidity of 85-95%, an air velocity of 0.35-0.45m/s, an oiling and clustering position of 700-800mm, and a winding speed of 4100-4600m/min, the porous superfine polyamide 6 fully-drawn yarn product with a specification of 55dtex/144f-75dtex/144f is prepared. Flexible operation is adopted in the preparation method. The preparation method is advantaged in simple technology and low production cost. The product is advantaged in stable performance, good yarn evenness, and good coloration property.

The invention discloses a high-concentration emulsion treatment method and a treatment system. The system comprises a waste emulsion storage tank, an acidification reaction tank, an oil separation tank, a Fenton reaction tank, a press filter, an evaporating pot and a biochemical device sequentially; the biochemical device comprises a filtrate collection tank, an anaerobic tank, a facultative anaerobic tank, an aerobic tank, a biological aerated filter, an MBR (Membrane Bioreactor) membrane tank, a reverse osmosis tank, a chemical oxidation pond and a recycled water tank which are sequentiallyconnected; the acidification reaction tank is connected with a dosing tank which is used for adding a demulsifier, and the Fenton reaction tank is connected with a dosing tank II for adding a Fenton reagent, a dosing tank III for adding a demulsifier and a dosing tank IV for adding liquid alkali/lime hydrate. The treatment method comprises the steps of collecting treatment, acidification, primarycoagulative precipitation, secondary coagulative precipitation, evaporation treatment, biochemical treatment and second-stage biochemical treatment. The system and the method have the effects of highdemulsification capability, applicability to the treatment of a variety of emulsions, high recovery and reutilization rate and high purification treatment capacity.

The invention discloses a method for remedying an organism contaminated field by using a bidirectional stirring injection method. The method comprises the following steps: (1) flattening the contaminated field; (2) performing shallow layer ground hardening; (3) staking out in survey; (4) locating bidirectional stirring equipment in place; (5) moving a drilling rod of the bidirectional stirring equipment; (6) performing pre-stirring drilling; (7) drilling a drill rod, injecting a medicine and stirring bidirectionally, namely, injecting the medicine through an inner tube of a conveying pipeline, injecting a mixed solution of a catalyst and a buffer agent from a pipeline between the inner tube and the outer tube of the conveying pipeline, and mixing and stirring the medicine, the catalyst, the buffer agent and soil at the bottom of the conveying pipeline; (8) lifting up the drill rod through opposite stirring; and (9) moving the drill rod to a next pile site, and repeating the step (5) to (8) until the soil in all pile sites is remedied. By adopting the method, the loss of ground mixed medicines can be reduced, the reaction velocity and the reaction time can be effectively controlled, the problem that grout spills out and turns up from the ground surface can be effectively solved, and the remediation efficiency can be improved.

An injection molding permanent magnet composite material containing polyphenylene sulfide includes the following components by mass: 78% to 91% of mixed magnetic powder, 8% to 21% of polyphenylene sulfide resin and 0.05% to 1% of coupling agents. The mixed magnetic powder includes the following components by mass: 50% to 96% of neodymium iron boron permanent magnetic powder, 1% to 49% of samariumiron nitrogen permanent magnetic powder and 1% to 45% of ferrite permanent magnetic powder. A preparation method of the injection molding permanent magnet composite material includes the following processing steps: (1) preparing multi-element composite magnetic powder, (2) mixing and pelleting and (3) injection molding.

The invention discloses a gamma radiation protective clothing preparing method. Micro-nano grade Gamma radiation protective clothing functioning powder prepared via ball milling is added to a rubber base body for mixing; then fabrics immersed into adhesives is flattened and stuck to glue; Gamma radiation protective fabrics are achieved via vulcanization formation; and at last the Gamma radiation protective clothing is prepared. The Gamma radiation protective clothing is soft, comfortable to wear and has high screening factor; the preparation technology is simple; and high production rate and low machining cost can be achieved.

The invention provides a lithium-rich manganese-based cathode material with a coated and compounded surface and a preparation method of the lithium-rich manganese-based cathode material. A lithium-rich manganese-based cathode material xLi2MnO3-(1-x)LiMO2 is used as a raw material, and is mixed and coated with a lithium ferric manganese phosphate material LiFeyMn1-yMzPO4/C, wherein the mass of the lithium ferric manganese phosphate material LiFeyMn1-yMzPO4/C is 0.5 to 5% of the total mass of the lithium-rich manganese-based cathode material with the coated and compounded surface; M in the lithium-rich manganese-based cathode material xLi2MnO3-(1-x)LiMO2 is at least one of transition metals Mn, Ni and Co, and x is smaller than 1 and greater than 0; N in a lithium ferric manganese phosphate material LiFeyMn1-yNzPO4/C is any two of metals Ti, Mg, Al and Zn, y is smaller than 1 and greater than 0.6, and z is smaller than 0.03 and greater than 0.005; carbon content is 2 to 4% of the mass of the LiFeyMn1-yNzPO4/C. A lithium ion battery prepared by utilizing the lithium-rich manganese-based cathode material with the coated and compounded surface, which is provided by the invention, has ultrahigh cycling stability in a range of 0 to 30DEG C, and can obviously improve gram capacity playing at a temperature lower than 25 DEG C.

The invention relates to a preparation method of a single crystal lithium-rich manganese-based anode material. In the process of preparing a single crystal lithium-rich manganese-based anode materialby calcining a lithium-rich manganese-based material precursor, the method comprises the following steps: S1, firstly, pre-sintering the lithium-rich manganese-based material precursor, and carrying out crushing treatment to obtain scattered oxide of the lithium-rich manganese-based material precursor; S2, uniformly mixing the oxide of the lithium-rich manganese-based material precursor with a lithium source and then sintering to obtain the oxide of the lithium-rich manganese-based material precursor. More preferably, a small amount of additive is mixed while mixing lithium after pre-sinteringand crushing; and the mixed additive may induce crystal growth and grain boundary fusion, which is favorable for forming a single crystal and improving the structure of the crystal; pre-sintering andcrushing can reduce the particle diameter to a relatively desirable range, so that the sintered body has better kinetic performance and achieves better mixing uniformity when mixing lithium and mixing the additive, to promote the formation of the single crystal. By means of such a preparation method, a lithium-rich manganese-based anode material having a high degree of single crystallization anda uniform particle diameter can be obtained.

The invention discloses a feeding device for producing an evenly mixed furniture plate. The feeding device comprises a mixing device and a hoisting device, an electric lifting device is fixedly connected with the top part of the mixing device, the bottom part of the electric lifting device extends and enters the interior of the mixing device and is fixedly connected with a stirring motor, a rotating shaft is connected with the bottom part of the stirring motor, a support frame is fixedly connected onto the rotating shaft, oscillating rods are hinged at the upper end and the lower end of the support frame, the hoisting device is arranged on the right side of the mixing device, the upper end and the lower end of the side wall on the left side of the hoisting device are respectively communicated with the interior of the mixing device through a communicating pipe, a hoisting motor is fixedly connected at the top part of the hoisting device, a rotating shaft is arranged in the hoisting device, and a screw blade is fixedly connected onto the surface of the rotating shaft by means of integrated molding. The feeding device regulates the heights of the oscillating rods and a stirring rod toimprove the mixing efficiency and the mixing effect of the materials of the furniture plate, the device uses the hoisting device to hoist the materials in the use process according to the mixing degree of the materials in an outlet, so that the degree of uniformity of mixing is improved.

The invention discloses a metal surface combustor and a gas premixing method thereof, solves the technical problem that the combustor can uniformly mix gas with combustion air in a shorter premixing channel, and belongs to the technical field of combustion of metal surface combustors. The metal surface combustor is characterized in that a metal throat is a cylindrical channel; the outer side surface is connected with a boiler front wall; one part extending into a hearth is an end-sealed microhole metal cylinder; the other end is connected with an air pipe as a whole; multiple gas spray guns and multiple cyclone blades are arranged at the tail end of the gas pipe in sequence; the gas uniformly enters the throat by spray holes in the gas spray guns and gas pipe holes in the gas pipes; meanwhile, the combustion air and the gas are hedged and uniformly mixed in the throat; and under stirring of the cyclone blades at the end part of the gas pipe, the uniform mixing is further accelerated, so that the mixing distance is shortened, the flame temperature nonuniformity caused by nonuniform gas mixing is effectively prevented, and the NOx emission is reduced.