8results about How to "Prevent backfire" patented technology

The utility model discloses an efficient energy-saving bell-type furnace burner which comprises a fixed machine shell, a front sealing cover is installed on the surface of the front end of the fixed machine shell, a detachable structure is arranged between the fixed machine shell and the front sealing cover, a flame stabilizing disc is installed in the front sealing cover, and a gas inlet is formed in the front sealing cover. A burner head is detachably mounted at the center of the surface of the flame stabilizing disc, and multiple stages of rotational flow blades are mounted in the air inlet pipeline. The components of the furnace burner are conveniently assembled and designed, so that the burner head is positioned inside the sealing front cover, a good windproof protection effect is achieved, meanwhile, a multi-stage rotational flow structure is designed, air and fuel gas respectively generate strong rotational motion through the multi-stage rotational flow blades after entering the burner, and the burner head is prevented from being blocked by the multi-stage rotational flow blades. Air and fuel gas can be mixed more sufficiently, the combustion efficiency is improved, the flame stabilizing disc is arranged in the combustor, combustion of flames can be stabilized, flame blow-off or backfire is prevented, and stability and safety in the combustion process are ensured.

The utility model discloses a hydrogen-burning fuel gas backflow stable-burning premixing condensing boiler which comprises a lower box body and an upper box body, a water cooling wall is communicated between the lower box body and the upper box body, a plurality of water cooling pipes I are arranged in an air inlet, a flow guide frame body is fixedly connected outside the water cooling pipes I, a plurality of water cooling pipes II are arranged on the downstream of the water cooling pipes I, and the water cooling pipes II are communicated with the upper box body. The second water-cooling pipes are located on the downstream of the first gas channel, second gas channels are formed between the second water-cooling pipes and the adjacent flow guide frame bodies, third gas channels are formed between every two adjacent second water-cooling pipes, a plurality of third water-cooling pipes are arranged on the downstream of the second water-cooling pipes, and a plurality of fourth water-cooling pipes are arranged on the downstream of the third water-cooling pipes. A fin is fixedly connected between the water-cooling pipe II and the water-cooling pipe III, and a water-cooling pipe group I, a water-cooling pipe group II and a water-cooling smoke barrier wall are sequentially arranged in the tapered hearth from upstream to downstream. According to the burner, flame combustion is more stable, meanwhile, the high-temperature flame is cooled, tempering is prevented, and generation of nitric oxide is reduced.

The application relates to a gas stove and a burner thereof. The burner comprises an ejector pipe group and a damper end plate. The ejector pipe group has an air inlet end and an air outlet end, and a booster hole is arranged in the side wall of the ejector pipe group close to the air inlet end; the damper end plate is arranged at the air inlet end of the ejector pipe group, and a primary air inlet hole and a gas hole are arranged in the damper end plate. External air can be sucked into the ejector pipe group through the booster hole and the primary air inlet hole at the same time, the booster hole is used for increasing the air intake amount, facilitating further promotion of combustion, improving the combustion efficiency and reducing the CO emission amount. The booster hole is arranged in the side wall of the ejector pipe group close to the air inlet end, and the primary air inlet hole is arranged on the damper end plate, that is, the air flow direction of the air entering from the booster hole is different from the air flow direction of the air entering from the primary air inlet hole. Therefore, when the two air flows flow into the ejector pipe group at the same time, the two air flows collide and mix, the air and the gas are fully mixed, the combustion efficiency is improved, and the CO emission amount is reduced.

This invention relates to the field of carbonaceous material reactor technology, specifically to a slag melter, comprising: a combustion aid distribution ring, which is a pipe arranged in a ring around the outer periphery of a discharger; a first pipe connected to the combustion aid distribution ring to introduce combustion aid; a gas-liquid fuel distribution ring, which is a pipe arranged in a ring around the outer periphery of the discharger; a second pipe connected to the gas-liquid fuel distribution ring to introduce gas-liquid fuel; multiple burners connected to both the combustion aid distribution ring and the gas-liquid fuel distribution ring; the multiple burners generate flames and high-temperature flue gas, which, in conjunction with the discharger, agitate, mix, oxidize, heat, and lift inorganic residues to produce molten liquid inorganic residues; this application distributes gas-liquid fuels and combustion aids as needed, fully mixes and combusts them, generates a stable high-temperature flame to agitate the inorganic residues according to operational needs, and adjusts the temperature of the inorganic residues, maintaining the slag level of the inorganic residues and ensuring smooth discharge.

The utility model relates to the related technical field of connection of biomass boilers and feeders, in particular to an interface device of a biomass boiler feeder, which is characterized in that two ends of a connecting pipe are respectively hinged with an inserting pipe, one inserting pipe is communicated with a feeding end of the biomass boiler, the other inserting pipe is communicated with a discharging end of the feeder, and the connecting pipe is connected with the feeding end of the biomass boiler. The two ends of the connecting pipe are respectively communicated with the inserting pipes through hoses; a locking mechanism is arranged at the hinged position of the connecting pipe and the inserting pipe and can lock an adjusting mechanism installed on the inserting pipe, and after the locking state of the adjusting mechanism by the locking mechanism is released, the adjusting mechanism is driven to deflect, so that the adjusting mechanism is driven to rotate, and the adjusting mechanism is driven to rotate. By means of the structure, communication between the discharging port of the feeder and the feeding port of the biomass boiler at different inclination angles can be achieved, meanwhile, when the inserting pipe deflects relative to the connecting pipe, the inserting pipe and the connecting pipe are always kept in the communication state, and backfire is effectively avoided.

The utility model discloses a harmful waste gas incineration system belongs to harmful gas processing technical field. Including combustion supporting swirl gas combustor, incinerator, combustion supporting swirl gas combustor fixed mounting at the front end hearth entrance of incinerator, its spout communicates with the hearth inside of incinerator, the tangential waste gas nozzle assembly that incinerator waste gas bellows and incinerator waste gas spout constitute is arranged in the circumference of the furnace wall of incinerator, and incinerator waste gas spout communicates with the hearth inside of incinerator, the harmful waste gas incineration system of the utility model is through the integration layout of hierarchical combustion structure design, swirl reinforced mixing, automatic precision control, has solved the traditional waste gas incineration system and mixes not fully, and the low combustion efficiency, NO x The technical problem that the generation is high, has the multiple advantages such as low nitrogen emission, high -efficient incineration, stable operation, strong adaptability.

The invention discloses a CEB waste heat recovery safety system and method based on the metal fiber surface combustion technology, the system comprises a CEB direct combustion device, a combined air inducing device, a waste heat recovery unit and a control unit, the combined air inducing device is arranged at the rear end of a smoke outlet of the CEB direct combustion device, and an air inducing channel and an emergency discharge channel are arranged in the combined air inducing device in parallel; the control unit monitors system pressure parameters in real time, controls the air inducing channel to be opened under the normal working condition, and introduces high-temperature flue gas into the waste heat recovery unit for heat energy recovery. When it is monitored that the pressure exceeds a safety threshold value, the combined air inducing device is immediately controlled to be switched to an emergency relief channel, smoke is directly exhausted into the atmosphere, and rapid pressure relief is achieved. By means of a double-channel switching mechanism of the combined air inducing device, the adaptability problem of CEB direct combustion equipment and a waste heat recovery system under the fluctuating load is effectively solved, and the safety of the CEB direct combustion equipment and the waste heat recovery system is improved. The device has efficient waste heat recovery and intrinsic safety protection capabilities, and is suitable for storage and transportation tank areas, loading platforms and other scenes where waste gas loads fluctuate severely.

The application provides a direct ignition method and device of a hydrogen-doped / pure hydrogen gas turbine, an electronic equipment and a storage medium. The method comprises the following steps: air is introduced into a premixing nozzle channel and a combustion chamber of the gas turbine, hydrogen-doped / pure hydrogen fuel is output from a corresponding duty nozzle of the gas turbine, the hydrogen-doped / pure hydrogen fuel is ignited to generate a duty flame at the duty nozzle, the hydrogen-doped / pure hydrogen fuel is output from the premixing nozzle, the hydrogen-doped / pure hydrogen fuel is mixed with air in the premixing nozzle channel and then enters the combustion chamber, and the mixture of the hydrogen-doped / pure hydrogen fuel and the air in the combustion chamber is ignited by the duty flame. Thus, by introducing air into the combustion chamber first, igniting the mixture introduced into the combustion chamber after the stable duty flame is formed in the combustion chamber by the duty flame, the backfire and deflagration of the hydrogen-doped / pure hydrogen fuel in the premixing nozzle channel can be effectively avoided, the ignition cost of the existing dual-fuel mode of the gas turbine is reduced, and the safety of the fuel ignition of the gas turbine is improved.