Dust Explosion Hazard Analysis And Control Of Tobacco Processing Enterprises

Tobacco production enterprise production process produces a large number of tobacco dust,tobacco dust belongs to organic dust,dust and air can form explosive dangerous environment,there is a risk of fire.Thus tobacco production and processing enterprises there are dangers of tobacco dust explosion,personnel and equipment for production facilities constitute a danger.To protect worker safety and the safety of the equipment and facilities,tobacco production industry companies to adopt certain measures for fire and explosion prevention is very necessary.In this paper,some tobacco processing production enterprise in the province as the research object,through to the enterprise layout,raw and auxiliary materials,production technology,production equipment,safety protective measures of site investigation and analysis,identify the tobacco enterprises are the main factors causing the fire and explosion.On tobacco dust particle size are analyzed,and discussed the tobacco dust particle size and dust cloud the relationship between the minimum ignition energy.Of tobacco dust on the thermogravimetric(tg)and differential thermal analysis,the results show that tobacco dust pyrolysis in between 220?390?,formed a large number of tobacco dust on the surface of gaseous fuel,surface burning of gas and dust.In 390?580? when the subjects burning tobacco dust,and release a lot of heat of combustion.When the temperature is 351.1 ? can ignite the tobacco dust,has the potential of fire explosion accident.Compiled the tobacco dust explosion fault tree,find out the minimum cut set and size set,calculates the structure importance of each basic event identified to prevent tobacco dust explosion accidents of the control node.Constructs the comprehensive evaluation of tobacco processing enterprises fire and explosion hazard index system,and by using the set pair analysis method the fire explosion risk of a tobacco enterprise to carry on the comprehensive evaluation.At the same time,combining the analysis results and the set pair potential to determine the situational tobacco processing enterprises fire explosion risk,and determine the enterprise in the field of fire explosion protection safety.Finally,from the general layout,the buildings,fire control facilities,electric explosion-proof measures for fire and explosion prevention,ventilation and dust removal,lightning protection,anti-static,and put forward reasonable and feasible safety management of security measures,to guide enterprises to prevent tobacco dust fire and explosion accidents.