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 nozzlecan 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 discloses a low-temperature flue gas coupling dry slag waste heat treatment desulfurization wastewater system and a construction method thereof. The system includes a concentration neutralization system for receiving desulfurization wastewater and a drying system connected to the concentration neutralization system; the invention uses two kinds of power station waste heat, First use the low-temperature flue gas at 90-150°C to achieve concentration and weight reduction, and then use the waste heat of dry slag to dry and solidify the wastewater. The two-step method realizes the drying and solidification of wastewater. Through the matching and coupling of the two heat sources, energy saving and consumption reduction are realized; through The flue, the flue gas inlet pipe and the flue gas outlet pipe are jointly installed. After the desulfurization wastewater is dried, the crystal water enters the flue gas in the form of water vapor for reuse; and the dried salt powder is mixed into the dry residue to realize comprehensive utilization; Combining the waste heat of the slag well, the air temperature device and the optimization of drying with the dry slag conveyor, the energy saving and consumption reduction of the boiler are realized.

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 discloses a spray desuperheater, which belongs to the field of boiler plants. The spray desuperheater comprises a tubular desuperheater header and the like. An inner sleeve is sleeved to a cavity of the desuperheater header. A primary venturi tube and a secondary venturi tube are arranged in the cavity of the inner sleeve, wherein the flared section of the primary venturi tube enters the cavity at the throat of the secondary venturi tube from the left end of the secondary venturi tube. A cooling water pipe vertically runs through the desuperheater header and the inner sleeve; the lower end of the cooling water pipe is connected with an upper end at the throat of the primary venturi tube; and the cavity of the cooling water pipe is communicated with that of the primary venturi tube. The lower end of a centrifugal nozzle runs through the cooling water pipe and then is extended into the cavity of the primary venturi tube; and the spray directions of spray orifices at the lower end of the centrifugal nozzle are dead against the secondary venturi tube. Due to the combination of the centrifugal nozzle and the primary and secondary venturi tubes, the spray desuperheater solves the problem of small atomization range and poor heat exchange effect of desuperheating water, is simple to machine, and can highly-efficiently atomize the desuperheating water in large scale to further effectively improve the heat exchange performance of the desuperheater.

The invention relates to a solid cone-shaped bubble atomizing nozzle suitable for high-viscosity non-Newtonian fluids, which includes an inner interface, an outer interface, a sleeve, a bubble generator, a mixer and a spray head, and the inner interface is fixed on the side of the mixer through the sleeve. One end, the nozzle is fixed on the other end of the mixer, the external interface is fixed on the mixer, and the bubble generator is set in the mixer; the bubble generator includes a guide tube and a guide plate fixed on the guide tube, and the guide plate The inner cavity of the mixer is divided into the outer flow channel and the mixing chamber. One end of the guide tube is connected to the inner interface through the sleeve, and the outer flow channel is connected to the outer interface. There are multiple outer guide holes evenly distributed on the circumference of the guide plate, which are located in the mixing chamber. One end of the indoor guide tube is provided with a plurality of inner guide holes. The invention solves the technical problems of poor nozzle atomization effect, high atomization gas consumption rate and large average droplet size of the existing high-viscosity non-Newtonian fluid. quality.

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 provides an anti-backfire nozzle for a rocket engine. The anti-backfire nozzle comprises a rotary core body (1), an anti-backfire ring (2) and a shell (3); the anti-backfire ring (2) is arranged between the rotary core body (1) and the shell (3); the inner wall face and the outer wall face of the anti-backfire ring (2) cling to the outer wall face of the rotary core body (1) and the inner wall face of the shell (3) respectively; a liquid propellant storing and distributing cavity (11), a tangential hole (12) and a swirl chamber (13) are formed in the rotary core body (1); the shell (3) is provided with a nozzle exit (31) and a thermal insulation material (32); and a propellant flows along a flowing passage defined by the anti-backfire ring (2), the liquid propellant storing and distributing cavity (11), the tangential hole (12), the swirl chamber (13) and the nozzle exit (31), is uniformly distributed and shunted by the liquid propellant storing and distributing cavity (11), forms uniform conical mist spray at the outlet of the nozzle exit and is atomized. The anti-backfire nozzle has the advantages of simple structure, mature process and the like, has both the functions of backfire resistance and efficient combustion and is suitable for other engines and combustion devices with high requirements on performance and easiness in generating backfire.

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 relates to an adjustable high-efficient waste acid combined burner which comprises a waste acid spray gun and a burner around the waste acid spray gun, wherein the waste acid spray gun comprises a waste acid inlet, a waste acid pipeline, an atomized gas inlet, an atomized gas pipeline, a mixer, a mixing cavity and a spray head; the atomized gas pipeline is arranged outside the wasteacid pipeline in a surrounding mode; one end of the atomized gas pipeline is connected with the atomized gas inlet, the other end of the atomized gas pipeline is open at the mixer, one end of the waste acid pipeline is connected with the waste acid inlet, the other end of the waste acid piple is open at the mixer, and the mixer is arranged at the back end part of the mixing cavity and open at themixing cavity; the spray head is arranged at the front end part of the mixing cavity; and the burner comprises a combustion-supporting air cavity, a fuel gas pipeline, an adjustable needle cone, an adjustable needle cone disk and a pre-combustion chamber. By utilizing the adjustable high-efficient waste acid combined burner, the technical problems in the background art is solved, and work reliably when the flow rate of waste acid changes between 30% and 100%, and has the characteristics of high combustion efficiency, controllable cracking temperature, good waste acid atomization, fast decomposition, compact layout and the like.