| Coal is our country’s primary energy, which accounts for70%of China’s total energyconsumption. The use of coal in industry is very extensive. It not only can be used as afuel to provide heat, but also is important raw material of metallurgy and chemicalindustry. Coal production industry, coal chemical industry, petroleum chemical industry,metallurgical industry and other industry can produce large amount of low heat value gas.These gases cannot burn in normal conditions, so we often take direct emptying to make it.However it has caused energy waste and environmental pollution. In order to solve theproblem above, this subject originally propose a scheme, which use oxygen gas with hightemperature produced by coal to help low heat value gas to burn. Based on this scheme,my team has done an experiment.In our experiment, my team used acetylene and nitrogen gas to simulate low heatvalue gas, then my team used flue gas the general coal produced to help this gas to burn.The main content of this experiment are as follows:First, my team designed a one-piece experiment structure, and built a test bed.Then, my team completed the cola experiment and gas experiment, and has got therelation curves of the feeding speed and the temperature of combustion flue gas. Besidesmy team has also got the relation curves and formula of the temperature of combustionflue gas and limit calorific value.Finally, my team has analyzed the experimental results, and put forward a conceptand two rules, namely the concept of endothermal jet combustion, the rule of coaldiminishing marginal effect, and the diminishing marginal effect rule of high temperaturegas helping low heat value gas to combust. |
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