3results about How to "Solve combustion instability" patented technology

The utility model provides a torch head for eliminating smoke by using compressed air, which relates to the technical field of tail gas treatment in the petrochemical industry and comprises a torch cylinder body, an incandescent light ignition device, a compressed gas cylinder, an induced draft fan and an exhaust pipe. According to the torch head for eliminating smoke by using the compressed air, after emptying gas generated in industrial production enters a torch system through the gas inlet cylinder, the emptying gas stably enters the torch cylinder body through the connecting cylinder. And the emptied gas is ignited by the incandescent light in the torch cylinder body for combustion treatment. The induced draft fan is started, negative pressure is formed in the compressed gas cylinder, and external compressed gas enters the compressed gas cylinder and then is sprayed into the torch cylinder in a high-speed jet flow mode through exhaust holes in a hole plate in the side face of the periphery of the exhaust pipe. The compressed gas of the high-speed jet flow is fully mixed with the emptying gas, so that the disturbance of the gas is enhanced, and the emptying gas is more fully combusted. And meanwhile, the supplement of the compressed gas is beneficial to stabilizing the flame, so that the flame is prevented from being extinguished or unstable combustion caused by factors such as strong wind is prevented.

The utility model provides a kind of hot blast furnace coal powder's injection device, it is related to coal powder injection technology field, including air preheating pipe and fixed on its upper surface coal powder preheating pipe, air preheating pipe one end is equipped with fixed sleeve, fixed sleeve side surface is embedded with filter plate, fixed sleeve inside is provided with fixed assembly, fixed sleeve is fixed in air preheating pipe one end by fixed assembly.The hot blast furnace coal powder's injection device passes through second fan and passes into air preheating pipe in high-temperature waste gas, and the air preheating pipe inside intake pipe is preheated, to preheat external air, avoid because temperature reduces and influence combustion reaction speed, to improve the stability and efficiency of combustion, and utilize waste gas as heat source, realize air preheating while reducing heat energy loss, improve overall thermal efficiency, mix and spray after preheating outside air and coal powder respectively, can avoid the combustion instability caused by preheating uneven or temperature difference too large.

The utility model discloses a full-mixing premixer and an energy-saving and environment-friendly water heater. The premixer comprises a premixing main body, a premixing pipe and a flow dispersing assembly, the premixing pipe is provided with a first premixing cavity, a plurality of vent holes, a first annular abutting part and a second annular abutting part, the first annular abutting part, the second annular abutting part and the premixing body define an annular gas cavity, and the annular gas cavity communicates with the first premixing cavity through the vent holes; the flow diffusing assembly comprises a flow diffusing arch plate and a flow diffusing base, and a second premixing cavity is formed among the flow diffusing arch plate, the inner wall of the premixing main body, the second annular abutting part and the flow diffusing base; and a third pre-mixing cavity communicated with the second pre-mixing cavity is formed in the flow dispersing base. According to the premixer, the first premixing cavity, the second premixing cavity and the third premixing cavity are formed by arranging the premixing main body, the premixing pipe, the flow diffusing assembly and other accessories, so that air and fuel gas can be fully mixed after being premixed for multiple times, and the problem that combustion is unstable due to insufficient mixing is solved.