21results about How to "Improve combustion effect" patented technology

This invention discloses a graphene oxide / carbon nanotube-based coal combustion catalyst, its preparation method, and its applications, belonging to the field of catalytic combustion technology for efficient coal utilization. First, graphene oxide is used as a carrier, and then carbon nanotubes and manganese oxide are grown on its surface in a one-step process using condensation and redox reactions, followed by co-firing with coal. The graphene oxide / carbon nanotube-based combustion catalyst prepared by this invention effectively improves combustion efficiency, reduces the ignition temperature of coal, and lowers the reaction activation energy, resulting in significant economic benefits and broad application prospects.

The utility model discloses an intrinsically safe oven device for sulfite production, which comprises an oven body, a mixing pipe fixedly connected to the side surface of the oven body, a sulfur spraying pipe fixedly connected to the side surface of the mixing pipe, a gas conveying pipe fixedly connected to the side surface of the mixing pipe, and a spiral plate fixedly connected to the side inner wall of the mixing pipe. A fan is fixedly connected to the upper surface of the furnace body, a filter box is fixedly connected to the output end of the fan, a heating tank is fixedly connected to the filter box through a pipeline, an air inlet is fixedly connected to the side surface of the heating tank, and an exhaust pipe is fixedly connected to the end, away from the heating tank, of the air inlet; the inner wall of the heating tank is fixedly connected with a heating pipe, and the side surface of the heating tank is fixedly connected with a gas-guide pipe. By means of the components, liquid sulfur and combustion-supporting gas are fully mixed through the gas conveying pipe and the spiral plate, the utilization rate of raw materials is increased, smoke generated by combustion is used for conducting waste heat treatment on the combustion-supporting gas, energy is effectively utilized, and the combustion effect is improved.

The invention belongs to the technical field of fuel additives, and particularly relates to a preparation method of micro-quantum core mother liquor for an internal combustion engine. S1, raw material pretreatment and solvent dehydration; s2, preparation of a combustion and calorific value enhancement functional mother solution A; s3, preparation of a system protection function mother solution B; s4, preparing a mother solution C with stable operation and lubricating functions; and S5, compounding, degassing and finely filtering the three functional mother liquor. An eight-element synergistic system is constructed, and the micro-quantum core mother liquor for the internal combustion engine is prepared by adopting a three-module step-by-step preparation process; after methanol fuel is added, the combustion efficiency, power output and cold start performance can be synergistically improved, meanwhile, electrochemical corrosion, sealing element swelling and part abrasion are inhibited, and it is guaranteed that the fuel is stably stored for a long time; the process avoids the compatibility problem of multi-additive mixing, and solves multiple contradictions of energy improvement, material protection and fuel stability.

This invention relates to the field of aero-engine technology, disclosing a combustion assembly and an aero-engine. The invention includes: a flame tube; an evaporator tube comprising a main pipe and several branch pipes, one end of the main pipe forming an evaporator tube inlet, the branch pipes corresponding to the other end of the main pipe, and the ends of the branch pipes away from the main pipe forming several evaporator tube outlets, which are located within the flame tube; and a fuel supply structure connected to the evaporator tube inlet. This invention, by arranging the branched evaporator tubes in a blood vessel-like pattern on the flame tube, increases the probability of fuel breaking up upon impact with the wall under the action of the branched structure, resulting in better fuel atomization. Simultaneously, because the branched evaporator tubes have a larger contact area with the hot wall surface, they absorb more heat, thus allowing the fuel to be heated more fully, thereby evaporating more fuel and ultimately improving combustion efficiency.

The utility model relates to the technical field of hearths, and discloses a hearth assembly of a coal-fired power generation boiler, which comprises a hearth mechanism, a feeding door and an air inlet pipe, the feeding door and the air inlet pipe are respectively communicated with the front side and the left side of the hearth mechanism, the right side of the hearth mechanism is communicated with a square pipe, and a filter module is inserted in an inner cavity of the square pipe. An air outlet of the square pipe is communicated with a three-way valve set, the back face of the three-way valve set is communicated with a bent pipe, the bent pipe is communicated with the air inlet pipe, a limiting mechanism is inserted into the top of the filtering module and comprises a T-shaped arm, and a spring is connected between the T-shaped arm and the filtering module. According to the hearth assembly of the coal-fired power generation boiler, the combustion effect of fuel is improved, then waste gas is recycled, energy loss is reduced, the filtering module is rapidly assembled and disassembled from the interior of the square pipe through the additionally-arranged T-shaped arm, spring, connecting rod, clamping block and clamping frame, and therefore the assembling and disassembling speed of the filtering module is increased, and the assembling and disassembling efficiency of the filtering module is improved. And a worker can conveniently maintain and overhaul the filtering module.

The utility model discloses a kind of combustion device and combustion system, comprising: hearth, hearth provides space for material combustion;Primary air chamber, primary air chamber is used to form primary air;Air distribution plate, hearth is communicated with primary air chamber by air distribution plate;Ammonia gas pipeline, ammonia gas pipeline is located in hearth and close to air distribution plate;Ammonia gas air cap, ammonia gas air cap is used to communicate ammonia gas pipeline and hearth, and the gas in the hearth is guided, the surface of ammonia gas air cap has ammonia cracking catalyst layer, ammonia cracking catalyst layer can at least part of ammonia gas that passes through ammonia gas air cap is cracked into nitrogen and hydrogen. Since the minimum ignition energy of hydrogen is lower than that of ammonia and the combustion temperature is high, hydrogen is more easily combusted than ammonia, which can improve the combustion characteristics in the hearth and enhance the effect of ammonia combustion, thereby reducing ammonia escape, while allowing more ammonia to react with nitrogen oxides, achieving the purpose of inhibiting the formation of nitrogen oxides.

This utility model relates to the technical field of moxibustion devices, specifically to a moxibustion device. The lower cover contains a filter; a lower cylinder is fitted onto the lower cover, with ventilation holes on its outer wall; an upper cylinder is fitted into the lower cylinder, with an interference fit; a bracket is located inside the upper cylinder, with a needle fixed at the center of its bottom; a moxa stick positioning device is located at the lower part of the bracket, with the sharp end of the needle passing through and suspended inside the device; a moxa stick is installed inside the positioning device and fixed to the needle; a fixing ring is located at the upper part of the bracket, with an interference fit between the ring and the upper cylinder. This utility model, by adding a moxa stick positioning device inside the moxibustion device, ensures that the moxa stick is fixed inside the device during installation, preventing it from burning and contacting the cylinder body, thus avoiding burns to the user if the moxa stick is misaligned.

The application relates to the technical field of computer simulation, and provides a numerical simulation method and system for the working process of an ADN-based space engine, which comprises the following steps: collecting historical physical and chemical attribute data of ADN-based propellants under different combustion conditions, and constructing a combustion process simulation model containing chemical reaction dynamics action relationship and fluid mechanics action relationship; inputting propellant initial state data into the model, simulating the energy release process in the combustion chamber after ignition triggering, and obtaining simulation analysis results containing flow state and temperature gradient influence factors; generating an energy release state atlas of the propellant in the ignition stage according to the simulation analysis results to represent the energy release intensity distribution at different moments; mining the space-time evolution law of the energy release of the propellant based on the energy release state atlas, and outputting an energy release characteristic analysis report to guide the optimization of the combustion efficiency of the engine.

The invention discloses a support plate stabilizer structure for enhancing fuel oil atomization and suitable for an afterburner, which is used for improving the fuel oil atomization effect and the combustion stability, and comprises two support plate outer edge frames, a support plate tail edge frame, a fuel oil injection rod and the like, and a support plate mixing channel is formed between the two support plate outer edge frames; and a plurality of cooling air cavities are formed in the main body part so as to prevent key parts from being ablated in a high-temperature environment. First fuel oil impacts the fan-shaped channels through the oil injection holes to form an oil film, is further atomized under the shearing action of airflow and is mixed with air, and premixed gas is formed and then enters the concave cavity to be combusted. According to the design, flames in the concave cavity can be kept stable under the extreme conditions of low temperature, low pressure and the like, so that the ignition and flameout boundary of the combustion chamber is widened, meanwhile, high-temperature fuel gas in the concave cavity can heat transverse jet flow of second fuel oil, and the evaporation and mixing efficiency of the second fuel oil is improved. By means of the integrated design, the number of components is reduced, the flow resistance in the non-stress-application state is reduced, and meanwhile the thrust-weight ratio is increased.

The utility model discloses a lampwick positioning device of aromatherapy candle production relates to aromatherapy candle production technical field, it includes positioning mechanism and fixed installation control panel of workbench front edge outer wall, the top of workbench is equipped with candle mould, and the upper portion concentric of candle mould is equipped with lampwick body, the positioning mechanism includes mould positioning subassembly and lampwick positioning subassembly. The utility model is provided with lampwick positioning subassembly, and the output shaft synchronous elongation of two electric jars is controlled through control panel control to control two rubber clamping blocks and center to draw together and make lampwick body center positioning, can accurate guarantee that lampwick body and candle mould are in concentric state, then the output shaft synchronous contraction of two electric push rods is controlled through control panel control to control two lift lugs and move down, the lampwick body that is clamped down moves accurate insertion to the central region of candle mould gradually at this moment, thereby guarantee that lampwick is not easy to deviate, help to improve the combustion performance and appearance of aromatherapy candle.

The present application relates to combustion system technical field, provide a kind of low calorific value waste gas oxygen-enriched combustion system, including first heat exchanger, venturi, prechamber and second heat exchanger;The first inlet of the first heat exchanger is used to receive oxygen-enriched combustion-supporting air, the first outlet of the first heat exchanger is communicated with the throat of the venturi, the first outlet of the first heat exchanger is also communicated with the inside of the preheating chamber, the second inlet of the first heat exchanger is used to receive external high-temperature flue gas, the second outlet of the first heat exchanger is communicated with the second inlet of the second heat exchanger, the outlet of the venturi is communicated with the inside of the prechamber, the first inlet of the second heat exchanger is used to receive waste gas, the first outlet of the second heat exchanger is communicated with the inlet of the venturi, the first outlet of the second heat exchanger is also communicated with the inside of the prechamber.

This invention belongs to the field of environmentally friendly fuel technology, specifically relating to a method for preparing a green, low-carbon, and highly efficient modified fuel for alcohol-hydrogen engines. This invention comprehensively improves fuel performance through a progressive synergistic architecture of a bio-methanol platform – an oxygen-containing combustion-promoting system – a stability barrier – and a low-energy-consumption blending path. Using bio-methanol as a base, it optimizes combustion by compounding with oxygen-containing components such as 2-MTHF and DMM / MF, achieving rapid ignition, emission reduction, and noise reduction. Phase behavior is regulated by isobutanol and polyether-modified silicon, achieving a reversible and stable phase without the need for high-HLB surfactants, preventing deposition and gas lock. A four-fold protective barrier is constructed using GMO and fluorinated silica polyethers, combined with antioxidant synergy to achieve corrosion resistance and aging resistance. The process adopts a sequential design of front-end purification – mid-stage two-phase construction – and end-stage static mixing, achieving low-energy homogenization and ensuring storage, transportation, and operational stability.

The present application belongs to the field of coupling power generation, and provides a system and a control method for coupling a pulverized coal boiler low-load stable combustion and blending combustion. The system comprises two paths of cold air from a boiler primary air fan, one of which is directly transmitted to a cold air main pipe, and the other is transmitted to a hot air main pipe after being preheated by a preheater; a coal mill respectively takes cold air and hot air from the cold air main pipe and the hot air main pipe, mixes them to a set temperature, and then enters the coal mill for drying of the pulverized coal and sending the dried pulverized coal to the furnace of the pulverized coal boiler for combustion; a biomass gasifier respectively takes cold air and hot air from the cold air main pipe and the hot air main pipe, mixes them to a set temperature, and then enters the biomass gasifier; biomass material is gasified in the biomass gasifier to generate carbonized products of biomass charcoal and biogas; the carbonized product of biomass charcoal is transported to the coal mill to be ground together with raw coal, and then is blown to the pulverized coal boiler for combustion in the furnace; and the biogas is directly introduced into the pulverized coal boiler for combustion in the furnace.

This plasma generator belongs to the field of automotive energy-saving equipment technology. The invention includes a base, a negative electrode metal sleeve, an insulating mounting base, and a positive electrode device. The base is an annular structure, with the negative electrode metal sleeve nested inside. The insulating mounting base is mounted on the top of the base, and the positive electrode device is installed at the center of the insulating mounting base and extends into the negative electrode metal sleeve. This invention features an ingenious structural design and quick installation. It can provide combustion assistance to the engine.

This invention discloses a low-NOx submerged combustion device and method for ammonia. The submerged combustion device includes a heating pool, an ammonia burner, a flue, and a heat exchange tube bundle; the heating pool is filled with liquid, and the flue and heat exchange tube bundle are submerged below the liquid surface; the combustion device also includes an ammonia regeneration tank, the lower part of which is located below the liquid surface in the heating pool, and the upper end extending beyond the top of the heating pool; the ammonia regeneration tank has two spray facilities on its side wall, the upper spray facility I is used to introduce and spray liquid above the liquid inlet into the ammonia regeneration tank, and the lower spray facility II is connected to the outlet of the aeration mixture pump; the ammonia burner is used for combustion under oxygen-deficient conditions. The low-NOx submerged combustion device of this invention can achieve efficient low-NOx combustion and simplifies the denitrification equipment required in traditional combustion systems.

This invention discloses a multi-stage louvered swirl-type pure ammonia pre-decomposition burner, comprising a central ignition assembly, a silicon carbide heating assembly, a multi-stage louvered swirl pre-decomposition assembly, and a mixing chamber arranged coaxially from the inside out; the main combustion gas flow direction is forward; the central ignition assembly is used to introduce ammonia gas to achieve ignition and flame stabilization; the inner wall surface of the silicon carbide cylinder is smooth, and the outer wall surface is coated with a catalyst coating and has irregularly protruding small blocks; the multi-stage louvered swirl pre-decomposition assembly is arranged in the pre-decomposition channel between the silicon carbide cylinder wall and the mixing chamber cylinder wall, each stage including multiple guide rings and guide vanes; the inner diameter of each stage of the guide ring gradually decreases along the airflow direction; the guide vanes are arc-shaped, and their axes are inclined at an angle to the burner axis, with the inclination directions of adjacent stages being opposite. This invention achieves self-stabilized ignition of pure ammonia, significantly improves pre-decomposition efficiency, and achieves low nitrogen emissions.

The utility model relates to the field of fuel blending combustion mechanism, concretely is a kind of biomass fuel blending combustion mechanism for pulverized coal boiler, including base, the top one end of base is fixedly connected with motor one, the output of motor one is provided with air pump, the top of base is provided with injection feeding mechanism;Beneficial effect is: by starting motor one drives air pump operation to generate airflow, enter compression nozzle to increase pressure, again by injection port is discharged into gas material mixing chamber inside, high pressure airflow is generated at injection port and forms low pressure zone, at this moment, coal powder and biomass are put into feeding bin, by feeding screw rod even send into gas material mixing chamber, fuel and air will be well mixed in low pressure zone, mixed gas and fuel again through diffuser pipe restore part pressure, finally through diffusion port injection is discharged into boiler, improve fuel combustion effect, improve the uniformity and stability of feeding simultaneously.

The invention provides a pulverized coal additive device for thermal power generation, belongs to the technical field of thermal power generation, and discloses the pulverized coal additive device for thermal power generation, which comprises a mixing main pipe used for pneumatic conveying of pulverized coal, and one end of the mixing main pipe is provided with an adding nozzle. A plurality of connecting holes are formed in one side of a shell of the main mixing pipe in the length direction of the main mixing pipe, an adding pipe perpendicular to the main mixing pipe is inserted into each connecting hole, a groove is formed in the side wall of each adding pipe and formed in the windward side in the main mixing pipe, and a power mechanism is arranged in each groove. According to the invention, the mixing main pipe and the plurality of adding pipes inserted into the mixing main pipe are designed, the power mechanism of the mixing main pipe is mounted on the windward side in the mixing main pipe, and the adjusting mechanism can be driven to work through the power mechanism, so that an additive in the second chamber is extruded at the discharge plate on the leeward side; and the storage mechanism is mounted on the adding pipe, so that an additive can be supplemented in real time, and the device can be conveniently used for a long time.

This invention relates to the field of engine technology, specifically disclosing a flexible fuel high-pressure common rail fuel injection system, control method, and vehicle. The flexible fuel high-pressure common rail fuel injection system includes a fuel supply system and a return control valve. The fuel supply system includes a fuel supply device, a fuel identification device, and a high-pressure common rail fuel line. The fuel supply device supplies high-pressure fuel to the high-pressure common rail fuel line, and an injector for injecting fuel into the combustion chamber is installed at the end of the high-pressure fuel line. The fuel identification device is connected to the low-pressure line of the fuel supply device and is used to identify the type of fuel supplied by the fuel supply device. One end of the return control valve is connected to the engine's return outlet, and the other end is connected to the fuel supply system. The return back pressure of the return control valve is adjustable. This flexible fuel high-pressure common rail fuel injection system provides precise pressure regulation, which can solve the cavitation problem of high-pressure common rail systems under multiple fuel conditions, suppress the reliability hazards caused by cavitation, and improve performance.

The utility model relates to the technical field of rotary kiln combustion-supporting, in particular to a rotary kiln combustion-supporting air inlet structure, which comprises a heat exchange bin, a plurality of heat conducting pipes are fixedly installed inside the heat exchange bin, a gas distribution assembly is arranged at the lower end of the heat exchange bin, and a stirring assembly is arranged inside the heat exchange bin, wherein the stirring assembly comprises a supporting ring fixedly installed at the upper end inside the heat exchange bin, and stirring blades are fixedly installed on the outer surface of the rotating frame. In the utility model, the secondary air flows through the plurality of heat conducting pipes, so that the pulverized coal exchanges heat when flowing through the heat exchange bin, part of the heat in the secondary air preliminarily heats the pulverized coal, the heat of the secondary air is fully utilized, the heated pulverized coal is then mixed into the tertiary air, the tertiary air heats the pulverized coal, the temperature of the pulverized coal before combustion is further improved, the pulverized coal is more convenient to burn, the time required for heating the pulverized coal inside the combustion chamber is reduced, the influence of the time on combustion is reduced, and the combustion effect of the material is improved.

The invention relates to the technical field of gas control, in particular to an automatic control method for optimizing combustion of a hot blast stove based on gas prediction, which comprises the following steps of: estimating blast furnace gas generation amount, acquiring real-time operation parameters of blast furnace smelting, establishing a neural network model, outputting blast furnace gas prediction generation amount, and correcting the gas generation amount estimation. Performing blast furnace gas generation and use prediction, performing feature analysis through feature screening to obtain key influence factors, performing neural network model training, predicting the blast furnace gas by adopting LSTM (Long Short Term Memory) time sequence prediction, and outputting the generation amount or consumption amount in the future 30 minutes; the intelligent combustion of the hot blast stove comprises a gas flow measurement and calculation model, a vault temperature regulation and control model, a waste gas temperature regulation and control model and a high-calorific-value coal gas time-sharing combustion management and control model. Through precise prediction of gas generation amount, usage amount and equipment and in combination with a combustion control strategy, the energy utilization efficiency is improved, the hot air temperature is stabilized, gas consumption is reduced, and environmental pollution is reduced.