Study On Application Technology Of Changing Oil To Gas In Asphalt Mixing Equipment

In order to solve the increasingly prominent environmental problems,the state and local governments have introduced a series of laws and regulations,the total amount of pollutant emissions were strictly limited.Asphalt mixing equipment as an important part of highway construction,in the process of their work has caused great pollution to the surrounding environment,main show is dust pollution,flue gas pollution,noise pollution,etc.In this paper,combining with the current severe environment situation and working characteristics of the asphalt mixing equipment,in view of the asphalt mixing equipment high pollutant emission problems,from the perspective of environmental protection,putting forward the application technology of oil to gas on asphalt mixing equipment,striving to effectively control the asphalt mixing equipment pollutant emissions,providing good basis for its environmental governance.First from the perspective of theory,this paper analyzed the combustion characteristics of the natural gas and fuel oil,combustion system process under fuel and gas conditions were compared and analyzed,the theoretical calculation was made on the combustion emissions of asphalt mixing equipment oil to gas.Then,based on asphalt mixing equipment working conditions,simulating two kinds of working conditions of heavy oil and natural gas combustion,exploring emissions of asphalt mixing equipment oil to gas.Finally,relying on the ten-day high-speed three-section of the MARINI 4000 asphalt mixing equipment.on the basis of the theory and simulation for field test,completed the fuel consumption rate,combustion sufficiency and stability,temperature stability and harmful gas emissions test.Through the above studies show that after the oil to gas has significant effects on the properties of asphalt mixing equipment,main show:the fuel consumption rate is reduced,that is to say,heating 1 ton hot aggregate,the cost of natural gas is 7.6% lower than that of heavy oil;The gas conditions temperature stability of the hot aggregate and finished product were higher than the fuel condition;The natural gas combustion stability and combustion adequacy were better than the heavy oil.Asphalt mixing equipment of oil to gas hassignificant effects on the environment,mainly as follows:the heavy oil conditions of the noise was higher than the natural gas,but the gap is very small;Using natural gas as the fuel,compared with the heavy oil,harmful gas emissions have been effectively improved.