【摘要】 S Zorb烟气中空纤维膜分离的尾气中含有大量N2和少量的SO₂。为了考察膜分离尾气用于S Zorb装置再生和汽提的可行性,采用小型固定流化床装置,以含有少量SO₂的普氮作为进料气,在S Zorb再生条件下分别考察了SO₂含量对S Zorb新鲜剂再生和再生剂汽提过程中活性组分-金属氧化物的影响。结果表明,N₂中SO₂质量分数低于0.5%时,只对新鲜剂再生略有影响而对再生剂汽提没有影响,因此膜分离尾气可以用于S Zorb吸附剂的再生或汽提;随着N₂汽提时间延长,汽提产品气中硫含量提高,表明N₂汽提可以促进再生剂中已生成的硫酸盐、亚硫酸盐分解。更多还原

【Abstract】 Tailed gas from hollow fiber composite membrane separation of S Zorb flue gas contains a large amount of N₂ and only a few SO₂.In order to study the feasibility of the tailed gas utilization in regeneration or stripping process of S Zorb units,the effects of SO₂ in N₂ on the active components of S Zorb sorbent during the process of both regeneration of fresh sorbent and stripping of regenerated sorbent were investigated in a small fixed fluidized bed unit,taking N₂ with little SO₂ as feedstock and under the regeneration condition of S Zorb unit.The experimental results showed that SO₂ with less than 0.5% of mass fraction has a little effect on regeneration of fresh sorbent but few effects on stripping of regenerated sorbent,meaning that the tailed gas from membrane separation of S Zorb flue gas could be used for the regeneration and stripping of S Zorb sorbent.During N₂ stripping,sulfur content in gas products increased with the time passing,showing that N₂ stripping could promote the decomposition of sulfate and sulfite generated during the regeneration process in regeneration agent.更多还原