湿法海水脱硫工艺关键参数工业试验性研究  

Experimental industrial study on key parameters of seawater flue gas desulfurization process

作　　者：刘涛 管一明 王宏亮 薛建明 王小明 王小立[2] 薛军[2] 范子茹[3] 

机构地区：[1]国电科学技术研究院,江苏南京210031 [2]北京龙源环保工程公司,北京100044 [3]南京师范大学动力工程学院,江苏南京210042

出　　处：《中国电力》2010年第11期50-55,共6页Electric Power

基　　金：国家863计划资助项目(2007AA061801)

摘　　要：通过中试装置对湿法海水脱硫工艺中关键参数进行了工业试验性研究,考察了不同散堆填料、吸收区液气比,曝气恢复区稀释比、曝气强度等工艺重要参数变化对海水脱硫工况和海水恢复后水质状况的影响。试验研究结果表明:多面体填料优于常规雪花型和多面球填料,在空塔流速小于2.5 m/s工况条件下,填料高度在一定范围内提升可以节约海水喷淋量。当混合海水pH值低于3.5时,单纯靠提高曝气强度的方法无法将海水pH值、碱度、化学需氧量恢复到海水四类国家标准。在一定的稀释比和曝气氧化强度下,延长脱硫后恢复海水的停留时间对海水pH值、溶氧、化学需氧量恢复有利,但两者呈非线性关系,同时时间延长也就意味着曝气池需要更大的容积。The key parameters of the seawater wet desulfurization process were studied in the experimental industrial equipment, title irdluences of some important process parameters on the seawater quality were researched, such as different random packing, absorption area ratio of liquid to gas, dilution ratio and aeration intensity. Experimental results show that polyhedral packing is superior to conventional snowflake and multi-faceted ball packing. Under the working conditions of air velocity less than 2.5 m/s, enhancing the packing height within a certain range can save water spray. When the mixed water pH value is lower than 3.5, the pH, alkalinity, chemical oxygen demand （ COD ） of the seawater cannot meet the IV national standards by improving aeration intensity method. Extending the recovery time after seawater desulphurization is good for restoring seawater pH, dissolved oxygen, COD when the dilution ratio and aeration maintaining a certain intensity. But it was not a linear relationship, while extended aeration tank needs greater volume.

关 键 词：海水脱硫 工业试验 填料 稀释比 曝气强度 

分 类 号：X701.3[环境科学与工程—环境工程]