【摘要】 由于SO₂排放标准日趋严格,现有烟气脱硫技术已难以满足需求。开发了以磷矿浆为脱硫剂吸收硫酸尾气低浓度SO₂的技术。实验结果表明,磷矿粉的硫容量是同体积NaOH饱和溶液的42倍、水的264倍,矿浆pH维持在4⁶对吸收效果最有利,吸收饱和后矿浆澄清液中的P₂O₅质量分数可达3.20%。该技术整个工艺无副产品产生,具有较好的环境效益,目前已实现了规模化产业应用。更多还原

【Abstract】 Due to the strictly standard on SO₂ emission, the existing desulfurization technology has been difficultto meet the demand. A new recycling technology of low SO₂ concentration with phosphate ore slurry as thedesulfurizer to absorb low concentration SO₂ is developed. The results show: sulfur capacity of phosphate oreslurry is 42 times of saturated solution of NaOH, 264 times of water; The pH value of phosphate ore slurrykeeps at 4-6 may have a best absorption effect;The mass fraction of P₂O₅ can achieve 3.20% in clarified liquidwhen the slurry absorbed saturation. This technique has good environmental benefit for no by-product, and hasbeen applied to large-scale industrial production.更多还原