38results about How to "Efficient atomization" patented technology

The invention discloses a nozzle of a combustion chamber of a miniature gas turbine, relates to the gas turbine technology, and in particular to a small size fluid fuel nozzle used in a combustion chamber of a 100 kW level miniature gas turbine. The nozzle consists of three parts which are a fuel oil passage, a fuel air passage and an air channel at the root of a burner, comprehensively utilizes the advantages of pneumatic nebulization and pressure atomization, and is a combined type high performance pneumatic atomizing nozzle. The nozzle of the invention has the characteristics that: the nozzle adopts a conventional processing method to realize excellent atomization of the fuel in small scale space, so as to meet the requirement for the quality of fuel atomization under a quite wide burden of the combustion chamber of the miniature gas turbine; the nozzle can avoid burnout and overcomes the defect of nozzle blockage caused by high temperature coking of the fuel; meanwhile, the nozzle can make the fuel in the combustion chamber to be combusted more fully and reduce discharge of pollutants such as smoke black and so on.

The invention belongs to the technical field of diesel tail gas aftertreatment, and in particular relates to an ammonia selective catalytic reduction method for a diesel injected by assistance of compressed natural gas. The method comprises the following steps: pumping urea out of a urea aqueous solution tank; filtering the urea, and delivering the urea to a urea gauger; introducing the compressed natural gas in a compressed natural gas tank into the urea gauger through a primary valve, mixing the compressed natural gas and urea solution, ensuring that the volume ratio of the compressed natural gas to the urea solution is 1:100-20 : 100, and primarily atomizing the urea solution; before the urea solution which is primarily atomized enters an exhaust pipe through a urea nozzle, mixing the compressed natural gas and urea solution which is primarily atomized, ensuing that the volumetric mixture ratio of the compressed natural gas to urea solution which is primarily atomized is 1:100-20:100 so as to improve the mixing uniformity and the atomization degree; decomposing the urea into NH3 and water at a high temperature in an exhaust pipe mixing zone, fully mixing the NH3 and the water and exhaust gas, introducing the mixture into an SCR selective catalytic reduction device; and in the SCR selective catalytic reduction device, reacting NH3 with NOx to generate ammonia gas and H2O, and then discharging the two into the atmosphere. The method realizes efficient atomization of the urea, also reduces the emission of the NOx by reduction through natural gas CH4, and improves the purifying effect on the diesel tail gas NOx.

The invention discloses a selective catalytic reduction (SCR) urea jet device of a diesel engine, and belongs to the technical field of engine exhaust purification treatment. The SCR urea jet device comprises a mixing cavity; the mixing cavity is provided with a gas source inlet, a urea inlet and a liquid outlet pipe; the gas source inlet is sequentially connected with an air pressure maintainingvalve and an air electromagnetic valve through pipelines; a nozzle is fixedly arranged on the urea inlet; the nozzle is sequentially connected with a safety pressure limiting valve, a gear pump, a urea filter and a urea tank through pipelines; the tail end of the liquid outlet pipe is connected with a mechanical atomizer; and the atomizer is arranged on an exhaust pipe of the external diesel engine. The SCR urea jet device of the diesel engine has simple structure and is reasonable in design. Quantitative jet of aqueous solution of urea is realized through the electromagnetic nozzle; and meanwhile, the urea corrosion and high temperature resistant mechanical atomizer is directly arranged on the high temperature exhaust pipe by adopting an air assisting mode, so that the reliability of thesystem is promoted.

The invention discloses a sensitive and stable atomic fluorescence generating system capable of atomizing continuously. The system comprises an electrically heated quartz tube, an argon source, a solution atomizer, a gas-liquid separating and gas mixing device, a water seal, and a hydrogen generator, wherein the solution atomizer is connected with the argon source and the gas-liquid separating and gas mixing device which is respectively communicated with the hydrogen generator, the electrically heated quartz tube and the water seal. The sensitive and stable atomic fluorescence generating system capable of atomizing continuously has the advantages of stable flame, high atomic fluorescence sensitivity and high sample atomizing efficiency, and has the characteristic of continuous sample introduction, so that an analytical instrument can reduce the measurement error through prolonging the measurement time so as to obtain ideal measurement precision and detection limit.

The invention discloses an ultrasonic efficient atomization device of water currents under narrow-slit airflow oscillation stirring. The device comprises a liquid-air leading shell and an atomization device generation shell; a liquid-air leading valve element is arranged in the liquid-air leading shell; an airflow gradual shrinking narrow-slit channel is formed in the outer side of the valve element; a center through hole of the liquid-air leading valve element is a jet water gradual shrinking channel, and a jet water outlet at the tail part is aligned with a water current ultrasonic oscillation cavity; an airflow self-exciting oscillation cavity is formed in the tail end of the atomization device generation shell; a horn-shaped airflow baffle plate is arranged in the center of the airflow self-exciting oscillation cavity; a water mist gradual shrinking channel is formed in the airflow baffle plate; and the water mist gradual shrinking channel, a water mist guide channel and a water mist jet outlet are smoothly transited and connected. An air flow enters the airflow self-exciting oscillation cavity after being accelerated by the airflow gradual shrinking narrow-slit channel; and the airflow baffle plate and the airflow self-exciting oscillation cavity are matched to form an airflow self-exciting oscillation field so as to successfully realize efficient liquid atomization. The device has the advantages of high atomization efficiency and simple structure, and is also suitable for efficient atomization of other liquid.

The invention relates to a hollow conical bubble atomizing nozzle applicable to high-viscosity non-Newtonian fluid. The hollow conical bubble atomizing nozzle comprises an inner connector, an outer connector, a sleeve, a bubble generator, a mixer, a sprayer and a needle-shaped cone; the inner connector is fixed to one end of the mixer by the aid of the sleeve, the sprayer is fixed to the other end of the mixer, the outer connector is fixed onto the mixer, and the bubble generator is arranged in the mixer; the bubble generator comprises a flow guide barrel and a flow guide plate, the flow guide barrel is communicated with the inner connector, an outer flow channel is communicated with the outer connector, a plurality of outer flow guide holes are formed in the flow guide plate, and a plurality of inner flow guide holes are formed in a mixing chamber; the sprayer comprises a sprayer body and a spray nozzle; an outlet circular seam is formed between the needle-shaped cone and a straight section of the sprayer. The hollow conical bubble atomizing nozzle has the advantages that technical problems of poor atomizing effect, high atomizing gas consumption rate and large average fluid drop diameter of an existing nozzle for high-viscosity non-Newtonian fluid are solved, the hollow conical bubble atomizing nozzle is excellent in atomizing quality within a wide flow regulation range, and the average diameter of fluid drops is greatly reduced under the condition of a low gas consumption rate.

The invention provides a flame stabilizing device for a TBCC subsonic combustion ramjet engine combustion chamber. The flame stabilizing device for the TBCC subsonic combustion ramjet engine combustion chamber comprises a supporting plate, a cover hood and an on-duty fuel injector bar. The supporting plate and the cover hood are connected together to form a cavity, the on-duty fuel injector bar is arranged in the cavity, the supporting plate has an upper surface and a lower surface, the lower surface has a concave cavity while the upper surface has a convex cavity, the supporting plate has a front cavity and a back cavity, the front cavity is located between the cavity and the back cavity, the front cavity is used for introducing cooling gas, a primary oil way fuel injector bar is arranged in the back cavity, a cooling gas round channel communicating the front cavity with the back cavity is formed between the front cavity and the back cavity, and a cooling gas round channel communicating the front cavity with the cavity is formed between the front cavity and the cavity. By reasonably arranging the fuel supply positions of the on-duty fuel injector bar and the primary oil way and improving the atomizing effect by way of various modes such as pressure atomization, pneumatic atomization and colliding atomization, the ignition property of the TBCC subsonic combustion ramjet engine combustion chamber is improved, the combustion property in a wide range is considered, and the integral property of the TBCC subsonic combustion ramjet engine combustion chamber is improved.

The invention discloses an automatic liquid nitrogen fire-extinguishing and explosion-suppressing system for an oil tank region. The automatic liquid nitrogen fire-extinguishing and explosion-suppressing system comprises a liquid nitrogen storage station, a low-temperature liquid nitrogen booster pump and a monitoring-jetting integrated box, wherein the monitoring-jetting integrated box comprises a housing, a glass ball expansive type constant-temperature fire detector with a glass ball fracture free surface, an expanding cavity and a horn-shaped outlet; the glass ball expansive type constant-temperature fire detector, the expanding cavity and the horn-shaped outlet define a low-temperature nitrogen gas cavity; the top of the liquid nitrogen storage station is connected with a self-lifting buffer tank through a gas exhaust interface; the self-lifting buffer tank communicates with the low-temperature nitrogen gas cavity through a housing upper interface; the low-temperature liquid nitrogen booster pump is connected with an inlet of a low-temperature ball valve; an outlet of the low-temperature ball valve is connected with the glass ball fracture free surface through a rear section of a gas storage tube; a connecting line is arranged on the rear section of the gas storage tube; a pressure feedback device, a fire-fighting linkage controller and an alarm are sequentially connected on the connecting line; and the alarm is connected with a control end of the low-temperature ball valve. The system can solve the fire efficient response problem, the liquid nitrogen effective conveying problem, the liquid nitrogen efficient atomizing problem and the liquid nitrogen diffusing problem, so that the purpose of automatically and efficiently suppressing explosion and extinguishing fire in an oil tank is achieved.

The invention provides a fuel gas generator. The fuel gas generator is composed of an injector, an eccentric turbulent flow ring, a spherical-cone-shaped combustion chamber and a three-way bent pipe. The injector is in a round cake shape, the whole injector is printed through a 3D printer, the upper half part of the eccentric turbulent flow ring is a cylindrical ring, the top face of the cylindrical ring is fixedly welded with the edge of the bottom face of a lower boss of the injector, the bottom edge of the side face of the cylindrical ring is fixedly welded with the hole wall of a side hole of the spherical-cone-shaped combustion chamber, and the lower half part of the eccentric turbulent flow ring is a conical ring with an eccentric opening. The spherical-cone-shaped combustion chamber comprises a spherical cavity and a cone cavity, a side hole is formed in the side face of the spherical cavity, an outlet is formed in the top of the cone cavity and fixedly welded with a middle inlet of the three-way bent pipe, the three-way bent pipe is integrally in a side T shape, a left port is formed in the left side of the three-way bent pipe, a flange structure connection mode is adopted, a right port is formed in the right side of the three-way bent pipe, a middle inlet is formed in the middle part of the three-way bent pipe, and a boss positioning form is adopted. The structure of the fuel gas generator is optimized, propellants can be efficiently atomized, mixed and combusted, and the combustion efficiency is improved.

The invention discloses a gas phase auxiliary atomizing nozzle with a built-in magnetization structure and an atomizing method. The gas phase auxiliary atomizing nozzle comprises a cylindrical shell. A liquid inlet is formed in the first end of the shell, and a cyclone outlet is formed in the second end of the shell. An air inlet is formed in the middle of the side wall of the shell, the liquid inlet is provided with a tapered inner flow channel, the tapered inner flow channel communicates with the liquid inlet and a bubble-shaped flow outlet, an aeration hole is formed in the side wall of a diffusion section of the tapered inner flow channel, a magnetization cavity is formed in the outer side of the diffusion section, and a magnetization ring is arranged in the magnetization cavity. An air cavity is formed at the outer side of the magnetization cavity and the outer side of the aeration hole section, the air cavity communicates with the air inlet and the cyclone outlet, and the aeration hole communicates with the air cavity and the tapered inner flow channel. The bubble-shaped flow outlet communicates with the cyclone outlet. Rotational flow channels are uniformly arranged in the air cavity in the circumferential direction. The volume of a pre-magnetizer placed at the liquid inlet of the nozzle is reduced, the magnetization distance is shorter, the application scene is more flexible, the physical and chemical effect is better, and the gas phase auxiliary atomization condition and cost are reduced.

The invention discloses a system for treating desulfurization wastewater by coupling low-temperature flue gas with dry slag waste heat and a construction method of the system. The system comprises a concentration and neutralization system for receiving desulfurization wastewater and a drying system connected to the concentration and neutralization system. Two kinds of power station waste heat are adopted, low-temperature flue gas at the temperature of 90-150 DEG C is firstly utilized to achieve concentration and reduction, then dry residue waste heat is utilized to achieve waste water drying and curing, drying and curing of the wastewater are achieved through a two-step method, and energy conservation and consumption reduction are achieved through matching and coupling of the two heat sources; through combined arrangement of a flue, a flue gas inlet pipe and a flue gas outlet pipe, after desulfurization wastewater is dried, crystal water enters flue gas for recycling in a water vapor form; the dried salt-containing powder is mixed with the dry slag, so that comprehensive utilization is realized; and waste heat of a slag well and an air temperature device are combined and utilized, and drying is optimized by cooperating with a dry slag conveyor, so that energy conservation and consumption reduction of the boiler are realized.

The utility model relates to an SCR atomizer for a diesel engine in an air-assisted mode, which belongs to the technical field of diesel engine atomization devices. It includes a hollow pipeline, the top of the pipeline is connected with a pipe joint for connecting with an external device, the tail end of the pipeline is connected with a nozzle with a spray hole, and the pipe body of the pipeline is sleeved with a heat insulation shell for heat insulation. The above-mentioned SCR atomizer for diesel engine in the air-assisted mode has a simple structure and a reasonable design. It changes the structure of the electromagnetic nozzle in the atomizer in the prior art, and realizes the efficient atomization of the urea aqueous solution through the combination of a simple mechanical structure. Improve NOx conversion efficiency. Compared with the existing electromagnetic nozzle, the cost of the invention is reduced by more than 50%, the conversion efficiency of NOx is increased by more than 10%, high temperature resistance and high reliability.

The invention discloses a novel furnace method carbon black production device and a using method, the novel furnace method carbon black production device comprises a T-shaped processing box body, the T-shaped processing box body is provided with a blower device and a refueling box body, and the interior of the T-shaped processing box body is provided with a processing cavity I, a processing cavity II, a processing cavity III and a processing cavity IV; a first vertical airtight partition plate is arranged in the first machining cavity and divides the first machining cavity into a first cavity section and a second cavity section, the first cavity section and the second cavity section are equal in size, a first transverse partition plate is arranged in the second cavity section, the second cavity section is divided into a third cavity section and a fourth cavity section through the first transverse partition plate, and the third cavity section and the fourth cavity section are arranged in the second cavity section. The size of the fourth cavity section is larger than that of the third cavity section, a first stirring device is arranged in the third cavity section, and a turbulence device is arranged in the fourth cavity section. The granulating machine has the beneficial effects that the structure is compact, the working intensity of workers is relieved, and the granulating efficiency is improved.

The invention provides a large-yield efficient gas atomization powder manufacturing apparatus which comprises a smelting system, an atomization system, a powder feeding system, a dust removal system, a screening system and a vacuum-pumping system. The smelting system comprises two or more smelting furnace; the atomization system comprises a transition material bag and an atomization tower; and the powder feeding system, the dust removal system and the screening system are sequentially connected. The powder feeding system comprises a herringbone connector, an air pipe and an air pipe branch pipe. The design of multiple smelting furnaces, dual pipes, dual dust removal equipment and the like are adopted, when one of the dual facilities breaks down, equipment use is not influenced, the halt production maintaining risk is greatly decreased, and atomization powder manufacturing of 2-5 t/furnace can be achieved; and according to the vacuum-pumping system, an atomization chamber is pumped to be vacuum before atomization, filling of protective atmosphere is then carried out, the oxygen content in the atomization environment is reduced to a large extent, and the oxygen content in the powder is reduced.

The invention relates to a premixing pre-evaporation low-pollution combustion chamber with a multi-point axial double-stage air auxiliary atomizing nozzle main combustion stage, which adopts a single ring cavity structure. The combustion chamber adopts a staged combustion manner; the head of the combustion chamber is divided into a pre-combustion stage and the main combustion stage; the pre-combustion stage adopts a diffusion combustion manner, so that when combustion stability is ensured, pollutant discharge under the small working condition is reduced; and the main combustion stage adopts a premixing pre-evaporation combustion manner, so that combustion pollutants can be effectively reduced. According to the invention, the central staged structure is adopted and the pre-combustion stage has a simple structure; the main combustion stage adopts the scheme of combining a multi-point axial double-stage air auxiliary atomizing nozzle and a premixing pre-evaporation section and is positioned and installed by a main combustion stage spray nozzle installation ring; the main combustion stage has a simple structure; fuel is atomized, evaporated and mixed under the action of two strands of rotational flow and interacts with rotational flow air in the premixing pre-evaporation section to form a uniform fuel-gas mixture; and the premixing pre-evaporation low-pollution combustion chamber is beneficial to the pollutant discharge level of the integral landing and take-off cycle of an aircraft engine combustion chamber.

A liquid medium atomizing method relates to a method for atomizing a liquid medium. The invention aims to provide the liquid medium atomizing method which can realize high-speed and high-efficiency atomization of the liquid medium. The liquid medium atomizing method comprises the following steps: arranging a liquid passage for circulating the liquid medium; arranging a gas flow passage for circulating a gas medium; enabling the gas medium to flow at a high speed; and converging and mixing the liquid medium and the gas medium so as to atomize the liquid medium by virtue of the high-speed/momentum characteristic of the gas medium.