焦化脱硫废液及硫泥干化焚烧制酸的技术研究

摘要

针对目前国内外湿式氧化法脱硫工艺中存在的脱硫废液、硫泥污染问题,提出了焦化脱硫废液、硫泥一体干化焚烧,制取浓硫酸的新工艺.该工艺以硫泡沫与脱硫废液共同提质干化、所得粗盐硫磺为原料直接焚烧,采用"3+2"ⅢⅠ-ⅤⅣⅡ二转二吸制酸工艺流程.该技术不仅提高了硫的资源利用率,使SO2总转化率大于或等于99.7%,且工艺废水均可回收利用,无二次污染产生.%The pollution problem of desulfurization waste liquid and sulphur sludge in desulfurization process at home and abroad,A new process for producing concentrated sulphuric acid from the waste liquid of coking desulfurization and slime dry incineration is put for-ward.Using the process of sulfur foam desulfurization wastewater and common quality and drying,the direct burning of sulfur salt the use of advanced"3 + 2"ⅢⅠ-ⅤⅣⅡtwo RPM two suction process,improve the sulphur resource utilization rate,the total conversion rate of SO2 more than 99.7%;In the process of production,the wastewater from the process is recycled,and no two pollution is produced.