J型烟囱的设计

Design of the J type stack

为满足燃油锅炉的烟气排放要求，设计了Ｊ型烟囱，它由斜三通、直管、膨胀节、防爆门、雨漏、落水管等组成；给出了烟囱高度计算公式，指出烟囱设计中应注意的几个问题。实际运行表明，这种烟囱烟气排放指标符合当地环保要求。

Describes a J shaped stack developed to meet the requirement of smoke emission standard of oil fired boilers, which consists of a slope tee, a straight pipe, an expansion joint, an explosion flap, a rain drain pipe and a down pipe. Gives a series of formulas to determine the height of the stack. Experience on operation shows that the stack design is practicable.