6results about How to "Improve combustion quality" patented technology

The invention discloses a high-water-content lignite moisture accurate regulation and control method and device, and relates to the technical field of lignite treatment device.The high-water-content lignite moisture accurate regulation and control device comprises a rack and further comprises a crushing mechanism connected to the rack, and the input end of the crushing mechanism communicates with a feeding port; the input end of the vacuum dehydration system is communicated with the output end of the crushing mechanism; the input end of the feeding mechanism is communicated with the output end of the vacuum dehydration system; and the input end of the upgrading mechanism communicates with the output end of the feeding mechanism. High-water-content lignite is crushed through the crushing mechanism, water and pulverized coal are separated and collected through the vacuum dehydration system, and ash which affects heat production and pollutes the environment in the pulverized coal is removed through the quality improving mechanism, so that the combustion quality of the lignite powder is improved, and emission of pollutants is reduced; and conveying of the pulverized coal and adding of the corresponding water content are continuously performed through the scraper conveying belt, so that the influence of water and ash in the lignite with the high water content is reduced, and the water in the lignite is accurately regulated and controlled.

The utility model provides a hydrogen-doped pulverized coal mixed combustion device and a hydrogen-doped pulverized coal mixed combustion system. The hydrogen-doped pulverized coal mixed combustion device comprises a hydrogen distribution device, a pulverized coal conveying device, a fuel mixing device and a combustion device, the hydrogen distribution device and the pulverized coal conveying device are arranged in parallel, and an inlet of the hydrogen distribution device and an inlet of the pulverized coal conveying device are communicated with a hydrogen storage tank and a pulverized coal storage bin through pipelines respectively. Outlets of the hydrogen distribution device and the pulverized coal conveying device communicate with the fuel mixing device through pipelines so that hydrogen and pulverized coal can be mixed to form a gas-solid mixture, and the combustion device combusts the gas-solid mixture. According to the hydrogen-doped pulverized coal mixed combustion device, hydrogen and traditional energy are combined and utilized in the industry, and in the combustion process of the hydrogen-doped pulverized coal, emission of pollutants can be reduced, and sustainable low-carbon development of economy is promoted.

The invention provides a coal-fired boiler ammonia-doped combustion compatible matching system based on radiation characteristic compensation, which relates to the technical field of boiler combustion and comprises an ammonia-doped combustion operation characteristic database construction module, a real-time operation optimization module and a performance evaluation and self-optimization module. According to the method, the ammonia-doped combustion operation characteristic database is constructed, then whether the boiler performance parameters are recorded or not is judged based on the key boiler parameters, and ammonia-doped strategy dynamic adjustment and wall temperature safety regulation and control are carried out based on the ammonia-doped combustion operation characteristic database and the boiler performance parameters. Finally, when the fuel enters the coal-fired boiler, the mixing condition of ammonia and coal is evaluated, whether the fuel mixing strategy is optimized or not is judged, meanwhile, the oxygen content condition of the coal-fired boiler is monitored and adjusted, the position of high-temperature flames in the boiler is adjusted and controlled through flexible grading of the ammonia / coal fuel, matching of heat transfer distribution in the boiler and the coal-fired working condition is achieved, and the coal-fired boiler is obtained. The ammonia-doped combustion compatibility matching effectiveness of the coal-fired boiler is improved, and the problem that the ammonia-doped combustion compatibility matching effectiveness of the coal-fired boiler is low is solved.

The application provides an oxygen-enriched combustion heating system and a pipe diameter design method thereof, and relates to the technical field of heating furnace combustion. The system comprises a heating furnace, a mixing pipeline and an ignition head. The input end of the mixing pipeline is connected with the oxygen-enriched air, the output end of the mixing pipeline is communicated with the input end of the ignition head, the output end of the ignition head penetrates through the furnace wall of the heating furnace and is communicated with the inside of the heating furnace, the mixing pipeline comprises a straight pipe part and a variable diameter part, the variable diameter part is located between the two straight pipe parts and is communicated with the two straight pipe parts, the variable diameter part comprises a variable small part, a thin pipe part and a variable large part in sequence along the gas flow direction, the variable small part gradually decreases in diameter along the gas flow direction, the thin pipe part and the variable small part have the same diameter at the smallest end, one end of the thin pipe part away from the variable small part is communicated with the variable large part, the variable large part gradually increases in diameter, the middle part of the thin pipe part is communicated with a gas supply pipeline, and the combustible gas is filled in the gas supply pipeline. The system can uniformly mix the oxygen-enriched air and the combustible gas, so that the combustion efficiency and quality can be improved.

The utility model discloses a furnace arch and fire grate combined type efficient incinerator which comprises a fire grate main body and a hearth installed on the top of the fire grate main body, a furnace arch main body is installed on the inner wall of the hearth and located on the top of the fire grate main body, a feeding cavity is formed in the hearth, a driving motor is fixedly installed on the front face of the hearth, and a discharging cavity is formed in the front face of the driving motor. And an output shaft of the driving motor penetrates through the hearth and extends into the feeding cavity. According to the utility model, the feeding cavity and the rotating synchronous plate are arranged to seal the feeding cavity, the furnace arch main body is matched to reduce heat loss and improve the combustion efficiency of garbage, and meanwhile, the synchronous plate can directly guide the garbage to the top of the fire grate main body for combustion when the garbage is added, so that the combustion quality is equivalently and orderly improved; and meanwhile, a self-cleaning filtering baffle is arranged in the flue, so that impurities can be prevented from being discharged, and a heat exchange water pipe is arranged at the tail end of the smoke pipe, so that heat of discharged smoke is recycled.

The application provides an engine air intake unit structure, an air intake assembly structure and an engine. The engine air intake unit structure comprises an air intake header and a methanol injector. The air intake header comprises an air intake pipe section with open ends and a mixing pipe section in communication with the air intake pipe section. The air intake pipe section extends along a first direction, and the mixing pipe section extends along a second direction. The first direction is perpendicular to the second direction. An end of the mixing pipe section away from the air intake pipe section is used to be in butt joint with an engine cylinder head. At least two injection positions are arranged on the mixing pipe section. The methanol injectors are arranged at the injection positions. Multiple methanol injectors inject methanol into the mixing pipe section. The injection directions of the multiple methanol injectors intersect with each other in a plane perpendicular to the second direction. The technical scheme of the application integrates the methanol injectors and the air intake header into an independent unit module, avoids direct corrosion of the methanol on the cylinder head, reduces the difficulty of improvement of the cylinder head, prolongs the mixing path of the methanol and air, and improves the uniformity and optimizes the combustion by cooperating with the cross injection of the methanol injectors.