一、前言1986年建站初期,我们去外地考察发现,省内公路系统沥青油罐的加温方式均为夹套式或在底部采用排管式两种。油罐或油池的容积一般在500～1000吨。其加温时间都很长,燃料消耗大,沥青易老化。例如:有些单位用1000吨贮罐,采用4吨锅炉产生的蒸汽夹套式加温,20天后沥青油温才能达到90℃;有的300吨油罐,用1吨锅炉加温21天还达不到泵吸温 First, the foreword In 1986 the initial construction of the station, we went to the field investigation found that the provincial road system asphalt tank heating methods are jacketed or at the bottom of the tube using two. The tank or tank volume is generally 500 to 1,000 tons. The heating time is very long, fuel consumption, asphalt easy to aging. For example, some units use steam jacketed heating with 4 tons of boilers to produce 1,000 tons of storage tanks. After 20 days, the temperature of asphalt oil reaches 90 ° C. Some 300 tons of oil tanks are heated up to 21 tons with 1 tons of boilers Less than the pump temperature