气态的硫单质，固态和液态的硫由单原子构成，而气态硫是由分子构成的． 硫通常是一种淡黄色晶体,有橙色、无色、红棕色三种颜色的硫蒸气,它们都是硫的单质,但每个分子中硫原子的个数不同. 硫蒸气一共有三种，呈现不同的颜色 无色硫蒸气由4个硫原子构成 红棕色硫蒸气由6个硫原子构成 橙色硫蒸气由8个硫原子构成
根据最小自由能法原理，推导出一维迭代法，计算硫蒸气中各分子态组分的平衡分区与组成。
According to the minimum Gibbs energy principle, a calculation method for equilibrium partial pressure and composition of molecule component has been derived.
饱和硫蒸气的平衡分压计算值与文献值符合较好。文中给出了液硫泡点以上温度范围的硫蒸气平衡计算结果。
The results from the calculation results are fitted well with the experiment data, and some results above the boiling point of liquid sulphur are given.
综述了国内外硫、氮、氯的污染物和碱金属、重金属、焦油蒸气等气体污染物的高温净化研究概况，提出了存在的技术问题。
An overview of internal and external study is made on high temperature purification of gaseous contaminants including sulfur, nitrogen and chlorine pollutants, alkali metal, heavy metal and tar vapor.
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