The gas produced by the small gas producer is usually not cooled and purified, and contains more dust particles, water vapor and tar. Therefore, it is called "hot dirty gas" and "water gas". At present, the hot and dirty gas is widely used for energy saving of heating in China. As we all know, the hot and dirty gas supply is not very stable, the long-term dependence on the manual heating temperature control and adjustment, relying on the frequent manual adjustment of the intake flow, the labor intensity is large, the heating furnace temperature fluctuations; Operator negligence, prone to excessive temperature, resulting in waste quality accidents. The existing burner is easy to block and leak air, and the safety is poor. The purpose of this technology is to solve the shortcomings of existing technology and provide a simple, high-quality and efficient automatic temperature control, dirty gas heating furnace. Technical problems including burner, gas pipes, air pipes, air inlet pipe, gas pipe and air pipe to the burner set outer pipe and the inner tube, outer tube, pipe and tube duct connections of natural gas pipeline, the gas pipeline valve plate and through the intake pipe connected to the other end of the switch and gas, connected to the cylinder gas switch valve plate. The gas flow regulating valve is set on the gas pipeline, and the air flow regulating valve is set on the gas pipe. A cleaning hole I is provided at the lower part of the gas switch valve plate, and a cleaning hole II is provided at the connection between the gas pipe and the inner pipe. A rotating blade is arranged between the outer tube and the inner tube. The cylinder is connected with the temperature controller. Beneficial effects of this utility model is automatically adjust the gas flow temperature control instrument control cylinder action to solve the defects of the current hot dirty gas burner of size can't automatic temperature control, temperature control technology, improve the level of automation, gas flow regulating valve and air flow control valve can be manually controlled gas and air flow rate, improving the precision of temperature control and flexibility. Set up two cleaning holes, easy maintenance, and safe production. The design of rotating blades accelerates convective heat transfer of flame. It has achieved the effect of high efficiency, high quality, energy conservation and emission reduction. The utility model relates to a background technology of a dual-use gas burner with medium calorific value. Under different operating conditions or in different seasons, the production of by-product gas, and air emissions not only pollute the atmosphere, but also is a huge waste of energy. As a by-product of industrial production, natural gas calorific value fluctuates greatly in output and calorific value, and contains coal tar dust and other impurities. The combustion equipment of gas burner is easy to insert and safe and reliable in operation. Coupled with the flame and pulverized coal combustion flame heat transfer characteristics between large, to ensure that in the normal range, boiler steam parameters of the operation, fuel burner must be specially designed changes. The purpose of the invention is to provide stable and reliable combustion for by-product gas and to ensure the normal operation of the boiler after mixing coal or burning gas. The purpose of the above is implemented through the following pulverized coal calorific value gas burner technical scheme, including shell, said multi-gas nozzle shell, two air nozzles, air ventilation, multi-nozzles and air nozzles in the gas combustion, where two air nozzles, air nozzle center position and two oil or gas burners. Medium hot gas pulverized coal burner, upper multi-tube gas combustion nozzle and lower tube gas nozzle are large diameter nozzles. The interface of coal dust nozzle to coal dust pipe is introduced. The utility model has the advantages of two large diameter gas pipes 1.
