165results about How to "Improve combustion thermal efficiency" patented technology

The invention provides a technique for processing coal with low metamorphism degree, which comprises the steps of crushing and sieving pretreatment. The technique is as follows: raw coal particles are sent into a drier, and subjected to anoxybiotic hot gas drying under normal pressure, wherein the drying condition is controlled to 10 to 50 cubic meters of hot gas required for each 1 kilogram of the coal, and the temperature of the raw coal particles is controlled to between 210 and 250 DEG C; the raw coal particles are sent into a pyrolysis apparatus, and high-temperature oxygen-poor hot gas is injected according to the flow ratio of 5 to 50 cubic meters per kilogram of coal, wherein the temperature of the oxygen-poor hot gas entering into a pyrolyzing furnace is controlled to between 400 and 950 DEG C, and the oxygen content is controlled to less than 6 percent of the volume; and the coal is fully mixed with the hot gas and heated to a temperature of between 530 and 580 DEG C. The technique has the advantages that the sulfur content is reduced compared with that in the raw coal, so that atmospheric pollution is reduced; solid products produced by the technique have high environment-friendly characteristic; the discharge amount of nitrogen oxide is obviously reduced; and atmospheric pollution is reduced.

Burner with balanced air distribution includes fuel gas seat with pipe of mixing wind being installed on base, and inner fire cover and outer fire cover setup above the fuel gas seat. Outer and inner annular air grooves are setup in seat cavity of the fuel gas seat. Fuel gas channel is setup between outer and inner annular air grooves. There are outer air mixing channels between two adjacent fuel channels, and isolated from fuel gas channels. Inner air mixing channels are setup between outer air mixing channel and inner fire cover. Inner air mixing channels make air possible to enter to central area of the inner fire cover from outer air mixing channels. Thus, the invention overcomes disadvantages of deficient burning caused by not even mixing ratio between fuel gas and air in inner fire cover of traditional burner. Interconnected structure designed for structure of inner and outer air mixing channels is more in favor of balanced matching so as to raise thermal efficiency.

An efficient sulfur-curing agent and its use are disclosed. It relates to circulation fluidized bed boiler combustion, solid sulfur and ash slag modification. The process is carried out by combusting for efficient sulfur-curing agent and coal to generate hydraulic gel material. The sulfur-curing agent consists of chalky clay, which comprises calcium oxide 35-44%, mineral agent with cand powder and/or calcium chloride fag end, the can powder contains calcium fluoride 40-60%, the calcium chloride fag end contains calcium chloride 30-40%. It's simple, efficient and convenient and has no environmental pollution. It has higher combustion heat utilization rate.

The invention belongs to the field of metallurgical technologies and discloses a horizontal continuous feeding and preheating device and a strengthened preheating method of the horizontal continuous feeding and preheating device. According to the scheme, two dust removal openings are correspondingly formed in the front portion and the rear portion of a horizontal continuous feeding and preheating duct, and the horizontal continuous feeding and preheating duct is divided into a strengthened preheating region and a smoke preheating region by the front dust removal opening and the rear dust removal opening; burners are mounted in the strengthened preheating region, and the two dust removal openings are correspondingly connected with smoke adjustment distributors through smoke pipelines; the dust removal negative pressure of the second dust removal opening is balanced by the jet flow dynamic pressure of the multiple rows of bruners in the strengthened preheating region; and the micro-negative pressure requirement of the first dust removal opening is controlled through a pressure sensor, so that the mixing amount of cold air of the first dust removal opening is reduced, the preheating efficiency of the burners and smoke of an electric arc furnace on steel scrap is improved, and the production is more environmentally-friendly.

The invention provides a combined cycle engine. The combined cycle engine comprises a supersonic air inlet mechanism, a continuous rotation detonation engine body and a turbojet engine body, wherein the supersonic air inlet mechanism is provided with a first gas inlet which communicates with the outside and is opened in the axial direction, and the continuous rotation detonation engine body and the turbojet engine body are fixedly connected to the lower portion of the supersonic air inlet mechanism. The continuous rotation detonation engine body and the turbojet engine body both communicate with the supersonic air inlet mechanism in a controlled mode in order to work in the mode that external gas is introduced into the continuous rotation detonation engine body and the turbojet engine body through the first gas inlet in the controlled mode. According to the combined cycle engine, mode transition can be completed within an operating envelope range, the stable thrust is provided for an aircraft, and then the aircraft hypersonically flies at 5.0 Mach or above in the atmosphere and can land and take off horizontally; in addition, the specific impulse of the engine is improved on the basis of adopting the continuous rotation detonation technique, the combustion heat efficiency is improved, and the economy and the reliability of the engine are improved.

The invention relates to a combustion engine combination cycle power plant with low heat value, a co-production of the combustion engine combination cycle thermal power plant, an integrated coal gasification cycle combination (IGCC) power plant, and the like. The invention adopts the new technique of gas turbine combined cycle power generating that the high and intermediate heat value gas cooperate with the low heat value gas, and the invention is a technology with high efficiency and low pollution. A low NOx burner provided with a gas turbine and an afterburner boiler adopt a self-cycle preheating heat-storing volution type low NOx gas burning system, therefore the power consumption of the gas supercharger can be reduced by 10-20 percent and the thermal efficiency of the electricity generating of the combined cycle unit can be increased for 5-15 percent. The invention can also solve the problems of the technology difficulty for reconstructing the system and the project cost. The invention can also provide stable combustion for burning the low heat value gas (blast furnace gas), can enable steam cycle system to have larger installed capacity and higher efficiency, and can lower the kilowatt cost. The invention ensures that the combined cycle thermal efficiency can reach about 60 percent, the electricity generating efficiency of the power plant can reach about 55 percent, and the energy can be saved for above 80 percent. The invention can break through a bottleneck that the investment and the electricity generating cost of the intermediate low heat value gas electricity plant are much higher than that of high heat value combined cycle power plant, namely the economic problem, and then the investment cost of the intermediate low heat value gas power plant (or the IGCC) can be lowered greatly.

The invention relates to the technical field of internal combustion engines, and provides a hydrogen internal combustion engine combustion system and a combustion control method. The hydrogen internal combustion engine combustion system comprises a jet flow chamber and a main combustion chamber. A spark plug is arranged in the jet flow chamber, a jet flow hole is formed in the bottom of the jet flow chamber, and the main combustion chamber communicates with the jet flow chamber through the jet flow hole. The system further comprises a hydrogen ejector, and a nozzle of the hydrogen ejector is arranged in the jet flow chamber. The nozzle is used for spraying hydrogen into the jet flow chamber at the tail phase of the air intake stroke and the compression stroke, and in the air inlet stroke, thin mixed gas is distributed in the main combustion chamber. And at the later phase of the compression stroke, concentrated mixed gas is distributed in the jet flow chamber. Based on the active jet flow ignition technology of the jet flow chamber, the heat efficiency of an internal combustion engine can be improved; and meanwhile, the hydrogen two-time ejection technology is adopted, the thin mixed gas and the thick mixed gas are formed in the main combustion chamber and the jet flow chamber respectively, NOx generation can be effectively restrained in the whole combustion chamber, and NOx emission is greatly reduced.

The invention provides an afterburner and a turbine engine. The afterburner comprises an outer cylinder assembly, a center body assembly, an oil way assembly, an annular combustion chamber and an igniter; the center body assembly comprises a front body, a middle body and a rear body, wherein the front body is located at the axial front end of the afterburner and forms a gas inlet, accepting entry of oxygen-containing gas, of the annular combustion chamber with the outer cylinder assembly, the middle body is located behind the front body along the axis and is connected to the front body and integrated with the front body, and the rear body is located behind the middle body in the axial direction, is arranged in the middle body in a slid and sleeved mode and forms a gas outlet of the annular combustion chamber with the outer cylinder assembly; the igniter is arranged at the corresponding part, forming the annular combustion chamber with the outer cylinder assembly, of the center body assembly and is used for igniting fuel gas formed by fuel and the oxygen-containing gas entering the annular combustion chamber, then rotation and knocking combustion of the fuel gas are realized, and therefore the problem that combustion of the afterburner is instable is solved, the heat efficiency of combustion is improved, and the power capability of working media is improved.

The invention discloses an ultrasonic atomization fuel auxiliary supply system. The system is characterized in that an ultrasonic atomization generator is matched with a Venturi mixer for use, so thatpremixed fuel gas with a certain proportion of fresh charge entering an engine is realized, the combustion heat efficiency of the engine is effectively improved, the emission of harmful gas of the engine is reduced. The system mainly aims at a fuel supply system of methanol which is a clean fuel, utilizes the ultrasonic atomization unit to atomize methanol into methanol mist, is matched with thenegative pressure adsorption principle of the Venturi tube, and realizes premixing of air and methanol mist through the adjusting function of an electronic throttle valve on the air inlet flow; and the heat efficiency of the engine is improved in an auxiliary fuel gas supply mode of the premixing part, and emission of the engine is improved.

The invention provides a preparation method of a rare-earth oxide material containing tourmaline. According to the method, tourmaline micro powder is added during a hydrothermal preparation process, and a micro electric field generated by spontaneous polarization of the tourmaline micro powder is utilized to control the increase of particle sizes of rare-earth oxide particles in hydrothermal reaction, so that more reaction active sites are exposed while the specific surface area of the rare-earth oxide material is increased, the catalytic oxidation reactivity of high perovskite type rare-earth oxides is promoted, and defects in the preparation process and application of the conventional perovskite type rare-earth oxides are overcome. The method can be widely used for pretreatment of catalytic materials, brings favorable economic benefits and social benefits to China in the fields of catalytic oxidation, industrial organic waste gas treatment, automobile emission purification and the like, and is of important positive significance in energy conservation, emission reduction and reasonable use of energy sources.

The invention discloses a gas stove. The gas stove comprises a panel provided with an opening, a bottom case which is used for supporting the panel, a burner and an energy-collecting disk which is arranged at a position of the opening of the panel, wherein the burner is located in the energy-collecting disk, a pressurization disk is arranged on the lower portion of the energy-collecting disk, and a secondary air supplementing hole is arranged on the side wall of the pressurization disk. The energy-collecting disk is arranged on the surrounding of the burner and is used for conducting energy-collecting reflection for energy generated by the burner, the heat emission and the heat convection are greatly reduced, the gas burning heat efficiency is improved, the pressurization disk is arranged on the lower portion of the energy-collecting disk, the secondary air supplementing hole is arranged on the side wall of the pressurization disk, the air outside the pressurization disk enters from the secondary air supplementing hole and is used for supplementing the burner with the secondary air through the channel between the energy-collecting disk and the pressurization disk, a pressurization fan is arranged on the bottom case of the gas stove, an air duct structure is arranged on the surrounding of the pressurization fan, the burning is complete, the gas burning heat efficiency is improved further and the effect of the inner temperature increment of the gas stove is reduced.

The invention provides an environment-friendly type diesel smoke abatement and anti-freeze agent for purifying emission of diesel automobiles, which is prepared from cleaning and dispersing agent, anti-oxidant, alkyl nitrite or isopropyl nitrate or ethylene/vinyl acetate and high grade plane kerosene through high-shearing mixing and emulsion process. The invention can realize good intensified smoke abatement property and fluidity for diesel under low-temperature.

The invention provides a method and system for preparing phosphoric acid.The method for preparing phosphoric acid includes the steps that phosphate ore, a reducing agent and a catalyst are mixed to obtain a mixed material; the mixed material is subjected to pelletizing treatment to obtain a globular material; the globular material is dried to obtain a dried globular material; the globular material is subjected to a reduction reaction inside a heat storage type rotary hearth furnace to obtain phosphorus-containing smoke and furnace slag; the phosphorus-containing smoke is subjected to an oxidation reaction to obtain phosphorus pentoxide steam; the phosphorus pentoxide steam reacts with water to obtain phosphoric acid.By the utilization of the method, the preparation efficiency and quality of phosphoric acid can be effectively improved.

The invention relates to a cooling-temperature-controllable-type engine intercooler assembly, and belongs to the technical field of supercharged engine intercoolers. The cooling-temperature-controllable-type engine intercooler assembly comprises an intercooler, a front gas channel, a rear gas channel and a temperature adjusting valve; the intercooler is provided with a gas inlet hole and a gas outlet hole; the front gas channel is connected between the gas inlet hole and the gas outlet hole and used for circulating gas not passing through the interior of a cooling device; the rear gas channelis connected between the gas inlet hole and the gas outlet hole and used for circulating gas passing through the interior of the cooling device; and the temperature adjusting valve adjusts the gas temperature in the gas outlet hole by adjusting the opening degree of a gas outlet of the front gas channel and/or the rear gas channel. The interior of the intercooler is arranged into a cooling and non-cooling double-gas-channel form, and the temperature adjusting valve is arranged at the common outlet of the front gas channel and the rear gas channel; the temperature adjusting valve can control the mixing ratio of the gas in the front gas channel to the gas in the rear gas channel to meet the control requirement of the gas inlet temperature of an engine, and the gas inlet temperature of the engine is automatically controlled; and the temperature adjusting valve can adjust the temperature after intercool to enable gas inlet temperatures of all operating points of the engine to be controlledin the optimal state.

The invention discloses a chemical waste gas boiler furnace for combustion. The boiler furnace comprises a chimney, an inclined louver, a crossed air distributing pipe, a combustion device, a drain device, a combustion chamber, a fume passage, a first fan and a second fan, wherein the boiler furnace body forms an N shape, the combustion device is positioned at the lower end part of one end of the N-shaped boiler furnace body, the combustion chamber is arranged above one end of the N-shaped boiler furnace body, the upper end of the combustion chamber is connected with the fume passage, the middle part of the boiler combustion chamber is provided with the crossed air distributing pipe, the crossed air distributing pipe is uniformly provided with a plurality of air distributing holes from top to bottom, the end part of the crossed air distributing pipe is respectively connected with the first fan and the second fan, the part of the fume passage on a second curved passage of the N-shaped boiler furnace body, corresponding to the combustion chamber, is provided with the inclined louver, the outer side of the bottom of the lower part of the inclined louver is provided with the drain device, and the upper end part of the other end of the N-shaped boiler furnace body is provided with the chimney. The boiler furnace has the advantage that the boiler body structure is vertically arranged, so the occurrence of aggregating and detonation of residual hydrogen and backfire is avoided, and the safe and reliable running of the device is ensured.

The utility model relates to a multi-channel swirling flow stabilizing flame stepless adjustable mixed combustion burner, which relates to a burner, in particular to a mixed combustion burner using pulverized coal and gas as fuel or a single combustion burner of pulverized coal and gas. It is equipped with a conical ring flame stabilizer in the center of the burner shell, the small head of the flame stabilizer is connected to the central air pipe and the gas pipe, and the outer wall of the gas pipe is connected to a gas mixer. A volute swirler and an adjustment pull rod are arranged on the outer wall of the gas ring joint and the gas pipe at the other end. The outer layer of the gas pipe is equipped with a fire channel, a primary air channel, a secondary air channel and a clean air channel. The secondary air duct and the clean air duct are equipped with swirlers and conical air nozzles respectively. The outer wall of the outlet of the clean air inner pipe and the secondary air inner pipe is made with a cone angle of 15-20° that expands outwards, and the cross-sectional area of ​​the outlet can be changed arbitrarily in the axial direction, and the airflow velocity can be changed. The flame stabilizer can move axially to change the outlet angle of the central air. In this way, the heat load flame shape can be adjusted steplessly, and the combustion temperature can be organically combined with the process conditions. The invention is a pulverized coal and gas burning device with high efficiency, energy saving and low emission of NOx.

The invention relates to a four-stroke layered double-swirling combustion energy-saving internal-combustion engine with a new air distribution mechanism, and is particularly suitable for various internal-combustion engines for seas, land and space. A cylinder (28) and a cylinder oil nozzle gasket (32) are arranged on a crankcase (85) of a conventional four-stroke single-cylinder gasoline rod ejector, the new air distribution mechanism is arranged in a small cylinder head (12), and a small cylinder (40) is arranged inversely. The front of the wall of the small cylinder (40) is provided with two ports (34), and a small piston (38) slides up and down to suck air and exhaust air. The sucked air rotationally enters along the walls of the big cylinder (28) and the small cylinder (40), the inlet fuel oil rotationally enters, the big and the small pistons apply work at the same time, and the exhausted air pushes a suction-exhaust turbine (51) to apply first work. The internal-combustion engine has the advantages of simple structure, good lubricating condition, long service life, stable work, high revolution rate and no noise; and the engine realizes layered double-swirling combustion of the fuel oil swirled in the middle of an hot air interlayer, and realizes three-time work application in one-time combustion, so that the engine has higher high-power output, saves the fuel oil by about 50 percent and reduces the emission by 85 percent.

The present invention discloses one kind of coal-burning energy releasing powder and its preparation process. The coal-burning energy releasing powder consists of saltpeter 0.5-1.5 weight portions, ferric dicyclopentadiene or allyl cyanurate 1-2 weight portions, potassium permanganate or potassium bromide 0.3-0.7 weight portions, sodium nitrate or calcium nitrate 0.3-0.7 weight portions, potassium permanganate or potassium persulfate 1.5 -2.5 weight portions, strontium nitrate or sodium bichromate 0.5-1.5 weight portions, calcium fluoride 1.5-2.5 weight portions, coal slag or char slag 1.5-2.5 weight portions, loess or lime 1.5-2.5 weight portions, potassium chlorate or potassium persulfate 0.5-1.5 weight portions, potassium nitrate 0.5-1.5 weight portions, and sodium chloride 80-90 weight portions. It can promote combustion of coal to convert the latent energy of coal into heat completely.

The invention relates to an engine. The engine comprises an air cylinder, a cylinder cover, a piston, a first spark plug, a second spark plug and a fuel injector which is used for injecting fuel intothe air cylinder; the cylinder cover is arranged on the air cylinder; the piston is movably arranged in the air cylinder; a spiral air incoming channel and a tangential air incoming channel are formedin the cylinder cover; the spiral air incoming channel is used for inputting vortex air into the air cylinder; the tangential air incoming channel is used for inputting air into the air cylinder; a first combustion groove, a second combustion groove and a third combustion groove are formed in the end surface, close to the cylinder cover, of the piston; the first combustion groove is communicatedwith the third combustion groove through a first jet flow channel; the second combustion groove is communicated with the third combustion groove through a second jet flow channel; the first spark plug, the second spark plug and the oil injector are arranged on the cylinder cover; the first spark plug corresponds to the first combustion groove; and the second spark plug corresponds to the second combustion groove. The reliable and stable ignition of the engine of the invention in an overall lean-burn mode can be achieved, and combustion heat efficiency is effectively improved. The invention further relates to a double-jet combustion method of the engine.

The invention provides an environment-friendly type diesel catalysis detersive for cleaning emission of diesel automobiles, which is prepared from cleaning and dispersing agent, anti-oxidant, alkyl nitrite or isopropyl nitrate and high grade plane kerosene through high-shearing mixing and emulsion process. The agent can improve combustion efficiency according to the combustion conditions.

The invention discloses a fire coal or inferior coal desulfurizer for sulfur fixation in a circulating fluidized bed boiler. The desulfurizer provided by the invention is made from siliceous marlite with its granularity being less than 4mm and a zeolite powder with its granularity being less than 0.1mm; 100g of the desulfurizer contains 98-99g of siliceous marlite. The desulfurizer is uniformly blended in fire coal or inferior coal and 15-40g of the desulfurizer is added into 100g of fire coal or inferior coal. With the addition of the desulfurizer in fire coal or inferior coal, 80-99.6% of sulfur content can be removed from fire coal or inferior coal.