One day in the future, the smoky conditions may not be visible on the curbside side of the roadside, and the barbecue grill is replaced by a closed oven. The boiler will no longer pollute the atmosphere due to exhaust emissions, endangering human life and health. And all this, thanks to a new type of combustion - the application of catalytic combustion. Its magic lies in the complete burning and oxidation of ultra-low concentration fuels with nearly 100% conversion efficiency. Issue 2, 2013 Forefront Science published a paper entitled "Natural Gas Low Carbon Catalytic Combustion Characteristics and Applications" by Zhang Shihong, Valerie Dupont and Alan Williams, introducing the characteristics, theory and applications of natural gas catalytic combustion. Theoretical Study on Catalytic Combustion of Natural Gas The study of catalytic combustion can be traced back to the early 19th century. However, it was not until the 1970s that people realized that catalytic combustion could bring huge economic and environmental benefits before they started extensive research and applied development. The further development and research of catalysts open up new avenues for the research of catalytic combustion. Until now, the main research of catalytic combustion has focused on the catalyst and the preparation technology and the catalytic device and the control technology. In a theoretical study of lean methane / oxygen / nitrogen mixed gas combustion, stagnation point flow reactor experiments were used. The middle of the internal aluminum bracket is a platinum foil of catalyst fixed inside the ceramic frame. At the time of combustion, the platinum element participates in the reaction together with the reactant, forms a thermal cycle, and after the reaction, the test gas becomes the tail gas and the platinum restores its original state and continues to participate in the next such cycle. Through repeated experiments and numerical simulations, it was found that due to the presence of catalyst, the combustible gas can be catalytically burned and completely oxidized at low concentrations, CO, nitrogen oxides and incompletely combusted hydrocarbons are not formed and combustion occurs Beyond the usual vapor phase flammability limits, combustion is therefore more stable. Heterogeneous reaction on the catalyst surface inhibits the extent of gas-phase oxidation reaction and increases the single-phase ignited surface temperature. Research and Development of Natural Gas Catalytic Combustion Zhang Shihong research team to catalytic combustion mechanism and applied research as the subject of nearly zero pollutant emissions, catalyst poisoning characteristics and how to adjust the lean gas / air ratio and other issues conducted in-depth industrial products and industrial research. Development of natural gas catalytic combustion V-type condensing boiler, natural gas catalytic combustion oven, natural gas catalytic combustion furnace. In the study of natural gas catalytic combustion V-type condensing boiler, after the combustion furnace adopts the method of catalytic combustion, many disadvantages of the flame combustion mode can be avoided. Zhang Shihong research team through the ordinary fast gas water heater and domestic gas stove flue gas was measured and found that gas water heaters and gas stoves were flue gas emissions were significantly diluted by the air, but the pollutant emission concentration is still much higher than the catalytic combustion Therefore, it is obvious that the catalytic combustion of heterogeneous combustion of CH4 depleted fuel can reduce fuel consumption and reduce environmental pollution. Experimental data show that the catalytic combustion V-type condensing boiler thermal efficiency significantly higher than the average gas boiler. Using the analyzer to measure the composition and content of flue gas both in catalytic combustion and gas-phase combustion, we found that the present catalytic combustion almost reached the level of complete combustion and nearly zero pollutant emission. Zhang Shihong research team another result of catalytic combustion oven closer to our lives. In contrast to conventional ovens, catalytic combustion ovens not only save on electrical energy but also allow the food to better withstand high temperature radiation in catalytic combustion ovens since the catalytic burner has a larger radiant area than ordinary electric ovens The energy that came. By comparing the roasting of two identical parts of beef in the normal oven and the catalytic burning oven, the beef roasted in the catalytic barbecue oven has the characteristics of fresh, fresh and soft juicy, easy to chew, more obvious smell and attractive meat flavor. In the study of natural gas catalytic combustion furnace, Zhang Shihong research team through the improvement of the furnace equipment, so that the temperature around the baking pan reached 850 degrees Celsius, burning pottery features obvious, regular shape, smooth surface, no raised potholes phenomenon. Compared with the ordinary pottery kiln firing pottery, the former because of uniform heating, the quality is more delicate, elegant color and detail, closer to the natural color, can be used as water containers. The application of natural gas catalytic combustion needs to be popularized Professor Zhang Shihong believes that the catalytic combustion of natural gas to achieve a true sense of the low-carbon denitrification emissions, high temperature flue gas to achieve aseptic and the same composition and fresh air. Natural gas catalytic combustion can play an irreplaceable role in common combustion in heating, food industry, chemical industry and kilns, some metallurgy industries and agriculture because of its combustion stability, complete combustion and near-zero pollution. For example, the results of the research on natural gas catalytic combustion V-type condensing boilers provide new ideas and approaches for the current air pollution control in Beijing. Natural gas catalytic combustion kiln research achievements for the future landscape design, landscape gardening, art production and ancient building materials production is of great significance. As people continue to raise awareness of environmental protection, this pollution-free combustion will be more widely used to promote space. â–¡ newspaper reporter Cao Bingli