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330results about How to "Reduce injection volume" patented technology

Device and method for increasing grain size of PM2.5 (particulate matter2.5) through turbulent flow and chemical agglomeration coupling

The invention discloses a device and a method for increasing grain size of PM2.5 through turbulent flow and chemical agglomeration coupling. Dust-containing flue gas sequentially flows through a chemical agglomeration area and a turbulent flow generation area in a flue and finally enters an electrostatic dust collector; when the dust-containing flue gas flows through the chemical agglomeration area, the PM2.5 particles in the flue gas are primarily contacted with agglomeration solution fogdrops sprayed in through a dual-fluid atomizing nozzle, agglomeration solution liquid drops are evaporated, in the evaporation process, the PM2.5 particles are connected through macromolecule chains with polar groups, and the grain size of the PM2.5 is increased; the flue gas flows through the turbulent flow area, the agglomeration solution fogdrops are promoted to collide and contact the PM2.5, the PM2.5 are promoted to collide and contact the crude dust under the turbulent flow disturbance generated by a turbulence bar, the PM2.5 are further aggregated and increased in size, meanwhile, the residence time of the agglomeration solution liquid drops in the flue is prolonged, before entering the electrostatic dust collector, the agglomeration solution liquid drops are completely evaporated, and the particles of which the size is increased through agglomeration are finally moved by the electrostatic dust collector. The agglomeration increasing effect of the PM2.5 is obviously enhanced, and the using amount of an agglomeration solution is reduced.
Owner:SOUTHEAST UNIV

Method for cooperatively promoting agglomeration growth of PM (particulate matter) 2.5 and treating desulfuration wastewater in evaporation manner and device of method

The invention discloses a method for cooperatively promoting agglomeration growth of PM (particulate matter) 2.5 and treating desulfuration wastewater in an evaporation manner and a device of the method. The method particularly includes steps that agglomeration liquor prepared by desulfuration wastewater, high polymer adhesive and wetting agent is sprayed into an inlet flue of an electric precipitator and is evaporated by the aid of heat of flue gas, in an evaporation process, the wetting agent promotes dust to enter drops of the agglomeration liquor, the high polymer adhesive is connected with PM2.5 via a polymer chain with polar groups, the grain diameter of the PM2.5 is prompted to be enlarged, so that the PM2.5 can be gathered by the follow-up electric precipitator, the desulfuration wastewater is evaporated completely, suspended matters and dissolvable pollutants in the wastewater are converted into solid to be dissolved out, and the suspended matters and the dissolvable pollutants in the wastewater, together with dust in the flue gas, are gathered by the electric precipitator. The device consists of a boiler, an air preheater, the electric precipitator, a desulfurizing tower, a hydraulic cyclone, a desulfuration wastewater clarification tank and an agglomeration liquor preparation tank, and a double-fluid atomizing nozzle is arranged in the flue between the air preheater and the electric precipitator.
Owner:SOUTHEAST UNIV

Method and system for controlling emitted dose of urea solution by SCR (Selective Catalytic reduction)

The invention provides a method and a system for controlling the emitted dose of a urea solution by SCR (Selective Catalytic Reduction) by taking three parameters, namely NH3 storage amount, NOx conversion efficiency and exhaust gas temperature into account. When the working condition of en engine instantaneously changes, the exhaust gas temperature can possibly and suddenly raise to cause increase of exhaust gas flow, and excessive NH3 escape is caused in the prior art; or when the working condition of the engine changes, the emitted dose of the urea solution is lower to cause insufficiency of the NOx conversion efficiency. Under the conditions that the requirements on the catalyst amount and the NH3 escape amount are definite, the maximum NOx conversion efficiency depends on the catalyst reaction temperature and the exhaust gas flow. According to the control method provided by the invention, a target value of the NOx conversion efficiency and the available NOx conversion efficiency based on the NH3 storage amount are added as closed-loop amendments, so that the emitted dose of the urea solution can be accurately controlled, the NOx conversion efficiency is furthest improved and the NH3 escape amount is reduced.
Owner:WEICHAI POWER CO LTD +1

Method for quickly repairing concrete pavement defects

The invention relates to a method for quickly repairing concrete pavement defects. The method comprises the following steps: (1) opening a groove in a crack needing to be repaired, wherein the grooveis 2-3 mm in width and 3-5 cm in depth, blowing accumulated water in the groove, injecting epoxy slurry in the crack, covering the upper part of the groove filled with the slurry with strip-shaped plastic cloth, drilling inclined holes in one side of the crack along the length direction of the crack, pouring the epoxy slurry in each drilled inclined hole and plugging the drilled inclined holes after pouring the epoxy slurry in the inclined holes; and (2) cleaning and polishing hollow parts needing to the repaired until the hollow part is lower than the concrete surface outside the hollow partby 3-4 mm, performing epoxy slurry injection treatment on the crack on the concrete surface of the repaired part, pouring the prepared epoxy bituminous grout or epoxy bituminous mortar in the hallow part to be repaired, beating packing by using a rubber hammer until the packing is flush with the concrete surface of a pavement, covering with the strip-shaped plastic cloth after finishing leveling,and repairing after curing. The invention provides the method for quickly repairing concrete pavement defects which has the advantages that on the basis of not damaging or using the undamaged concreteon an original pavement as far as possible, the pavement repairing treatment quantity is reduced, the impact and wear resistance is high, and the repairing speed is high.
Owner:CHINA HYDROPOWER ELEVENTH ENG BUREAU ZHENGZHOU CO LTD +1

Method for dechlorinating gas discharged from continuous reforming regenerator

The invention relates to a method for dechlorinating gas discharged from a continuous reforming regenerator, comprising the following steps: absorbing chloride in gas discharged from a coke-burning zone and an oxychlorination zone of the continuous reforming regenerator through a bed for catalyst to be regenerated and a bed for solid dechlorinating agent, wherein the bed for catalyst to be regenerated and the bed for solid dechlorinating agent are arranged between a gas-solid separator and a regenerator in sequence; eliminating one part of gas discharged from the bed for catalyst to be regenerated from a system, and returning the other part of the gas to the coke-burning zone of the continuous reforming regenerator; enabling gas discharged from a roasting zone of the continuous reforming regenerator to enter another dechlorinating pot filled with solid dechlorinating agent to absorb chloride therein and eliminating the gas from the system, wherein the solid dechlorinating agent comprises 50-88 percent of alkaline earth oxide by weight, 10-40 percent of alumina by weight and 2-30 percent of bentonite by weight. With the method for dechlorinating gas discharged from a continuous reforming regenerator, the gas discharged from the continuous reforming regenerator can be dechlorinated, and agent to be regenerated can absorb a certain amount of chlorine to reduce the amount of chlorine injected in the regeneration process.
Owner:CHINA PETROLEUM & CHEM CORP +1

Method for preparing semiconductor-on-insulator material by utilizing ion injection technology

The invention provides a method for preparing semiconductor-on-insulator material by utilizing an ion injection technology. The method comprises the steps that 1) a doped mono-crystal thin-film is formed on the surface of a first substrate; 2) a buffer layer and top layer semiconductor material are formed on the surface of the mono-crystal thin-film; 3) foreign ions are injected into the mono-crystal thin-film; 4) stripping ions are injected into the position of the preset depth in the first substrate below the mono-crystal thin-film; 5) bonding is performed between the top layer semiconductor material and a second substrate with an insulating layer; 6) and annealing processing is performed so that the first substrate and the buffer layer are separated from the mono-crystal thin-film, and the buffer layer is removed. Dual effect of ion co-injection and doped mono-crystal thin-film stripping is combined so that stripping dose is effectively reduced. The foreign ions are injected so that the mono-crystal thin-film is enabled to generate stress and adsorption capacity of the mono-crystal thin-film is increased. Stripping is realized after H-ion injection and annealing. Stripping occurs at the position of the ultrathin mono-crystal thin-film so that a crack is quite small, and the high-quality semiconductor-on-insulator material can be obtained.
Owner:SHANGHAI INST OF MICROSYSTEM & INFORMATION TECH CHINESE ACAD OF SCI

Engine thermal management system and control method thereof

The invention discloses an engine thermal management system. The system includes an engine air intake pipe, an engine air intake main pipe, an intercooler, and a supercharger compressor. The engine thermal management system also includes an intake air temperature control bypass pipeline, an intake air amount control bypass pipeline and a temperature sensor. The two ends of the intake air temperature control bypass pipeline are respectively connected to the inlet and outlet of the intercooler. The intake air temperature control bypass pipeline is connected in parallel with the intercooler. A first bypass proportional valve is arranged on the intake air temperature control bypass pipeline. The intake air flow bypass of different flow rates can be realized by adjusting the position ratio of the first bypass proportional valve. The two ends of the intake air amount control bypass pipeline are respectively connected to the inlet and outlet of the compressor. The intake air amount control bypass pipeline is connected in parallel with the supercharger compressor. A second bypass proportional valve is arranged on the intake air amount control bypass pipeline. The intake air flow demands ofdifferent working conditions can be met by adjusting the opening degree of the second bypass proportional valve. The temperature sensor is arranged on a pipeline of the engine air intake main pipe and is used for measuring the temperature of intake air entering the engine air intake main pipe. An EUC can collect measured values of the intake air temperature.
Owner:GUANGXI YUCHAI MASCH CO LTD

Crushing device, breaking method and application of pile head of cast-in-place bored pile

The invention discloses a crushing device, a breaking method and an application of a pile head of a cast-in-place bored pile. The crushing device of the pile head of the cast-in-place bored pile comprises the crushing device, wherein the crushing device is used for separating pile head concrete from pile body concrete through horizontal expansion force; the crushing device comprises a horizontal crushing assembly and a communicating pipe, wherein the horizontal crushing assembly is arranged at the joint position of the pile head concrete and the pile body concrete, and the horizontal crushingassembly is used for generating the horizontal expansion force to force the pile head concrete to be separated from the pile body concrete; and the communicating pipe extends out of the pile head concrete and is in communication with the inner cavity of the horizontal crushing assembly, and is used for injecting a crushing agent into the inner cavity of the horizontal crushing assembly. Accordingto the crushing device of the pile head of the cast-in-place bored pile, the structural design is simple, the crushing device of the pile head of the cast-in-place bored pile is placed at the joint position of the pile head concrete and the pile body concrete, and the separating effect can be achieved by injecting the crushing agent.
Owner:CCFEB CIVIL ENG

Diesel-alternative fuel hybrid combustion engine control method

The invention provides a diesel-alternative fuel hybrid combustion engine control method without an electric oil pump rack actuating mechanism, belonging to the field of engine control. According to the invention, an exhaust temperature sensor, a wide-range oxygen sensor, a mixedly burning ratio information display screen, an alternative fuel injection controller, a high pressure diesel pump rack displacement sensor and an alternative fuel injector are additionally arranged on an original diesel engine with a mechanical high pressure fuel pump; a high pressure diesel pump rack is mechanically connected with a vehicle accelerator pedal; and according to the position of the high pressure oil pump rack of the diesel engine, the alternative fuel injection controller determines the injection quantity of alternative fuel in combination with estimation on the excess air coefficient of an engine and the operation intention of the driver and sends a control command to drive an alternative fuel injection valve to inject corresponding alternative fuel to an engine intake pipe. The method has the beneficial effects of lowering the cost and overcoming the adverse factors caused by the adoption of an electric oil pump rack actuator and can be widely applied to the diesel-alternative fuel hybrid combustion engines.
Owner:NANTONG YATAI ENG TECH

Magnetic liquid sealing device

The invention discloses a magnetic liquid sealing device. The magnetic liquid sealing device comprises a shell, a rotating shaft, a shaft sleeve, a first pole shoe, a second pole shoe, a permanent magnet and an end cover, wherein a cavity is formed in the shell; the rotating shaft is rotatably arranged in the cavity; the shaft sleeve is arranged on the rotating shaft in a sleeving mode; a plurality of protrusions are arranged on the periphery of the shaft sleeve and arranged in the axial direction of the rotating shaft at intervals; the first pole shoe and the second pole shoe are arranged inthe axial direction of the rotating shaft at intervals; a plurality of first pole teeth are arranged on the inner circumferences of the first pole shoe and arranged in the axial direction of the rotating shaft at intervals; the plurality of first pole teeth and the plurality of protrusions are oppositely arranged in the radial direction of the rotating shaft; a plurality of second pole teeth are arranged on the inner circumference of the second pole shoe and arranged in the axial direction of the rotating shaft at intervals; the plurality of second pole teeth and the plurality of protrusions are oppositely arranged in the radial direction of the rotating shaft; one end of the shaft sleeve is connected to the end cover; and the permanent magnet surrounds the rotating shaft and is arranged between the first pole shoe and the second pole shoe. The magnetic liquid sealing device can reduce a sealing gap, the injection amount of magnetic liquid, and the magnetic liquid seal starting torque.
Owner:TSINGHUA UNIV
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