Study On The Passivation Of Liquid Fuel Spray Explossion

Due to the declining of oil resources,environmental pollution has become increasingly prominent,oil and gasification strategies was proposed.The fire and explosion accidents of petrochemical products occurred frequently every year,which posed a great threat to the lives and property of the people.Given this problem,based on 0#diesel,this paper formulated micro-emulsified diesel,which is a petrochemical product that meets the requirements of use,and it has been proved to be safe,environmentally friendly and resource-saving.It is an important method to address resource and environmental problems in the future.Firstly,0#diesel,water,emulsifier and co-emulsifier were mixed in different proportions to prepare two different micro-emulsified diesel oils.Micro-emulsified diesel 1 is made of Span80 and OP-10,which serves as a composite emulsifier,with a mass ratio of 8:2.When preparing micro-emulsified diesel 1,diesel accounts for 83%of the mass fraction,composite emulsifier accounts for 5%,and the co-emulsifier n-butanol accounts for 2%,water accounts for 10%.Micro-emulsified diesel 2 is made of oleic acid and Tween80,which serve as a composite emulsifier,with mass ratio of 7:3.When preparing micro-emulsified diesel 2,diesel accounted for 85%,composite emulsifier accounted for 3%,co-emulsifier n-butanol accounted for 2%,water 10%.The two micro-emulsified diesel oils prepared are stable and non-layered.Finally,this paper carried out explosion experiment,atomization characteristic,spray combustion experiment for 0#diesel,micro-emulsified diesel 1 and micro-emulsified diesel 2respectively.The results show that the maximum explosion pressure of the two types of micro-emulsified diesel oil is reduced.When the spray was ignited,the flame temperature and heat flux density of the two micro-emulsified diesel oils increased,among which the micro-emulsified diesel oil 1 was the largest,the flame temperature of which has raised to1135?,and the heat flux density of which was between 11.90 and 13.36 w/cm~2.The amount of smoke exhausted during the burning experiment of the two micro-emulsified diesel fuels has different levels of reduction,the micro-emulsified diesel oil 2 was the least.The experimental data and theoretical analysis presented can be served as reference for further research on micro-emulsified diesel in this paper,but also can be used as a basis for the promotion of micro-emulsified diesel in the use of oil-fired boilers or other fuel products.