酸洗废酸液的热化学再生技术评价

介绍了Lurgi流化床工艺、Ruthner喷雾焙烧工艺、Pori工艺和Pyromars工艺4种酸洗废酸液的热化学再生工艺,从能耗水平、副产物、再生酸纯净度以及环境影响方面对其进行了评价,并总结了该工艺技术领域的改进与创新。指出:基于Pori工艺改进的热水解工艺在能耗方面表现出较大的优势,但其稳定性、可靠性还有待于进一步的实践检验;而对于以燃烧方式供热的Lurgi或Ruthner工艺,更加节能减排的富氧或纯氧燃烧技术是可以尝试的方向。

Evaluation of thermal-chemistry regeneration technical for waste pickling liquid

The 4 processes for thermal-chemistry regeneration of waste pickling liquid are introduced,such as Lurgi fluidized bed process,Ruthner spray roasting process,Pori process and Pyromars process. They are evaluated on the aspects of energy consumption,by-products,regenerated acid purity and environment impact,and the improvements and innovations in application of these processes are summarized. It is pointed out that：The improved thermal hydrolysis process base on Pori process exhibits advantage on energy consumption,while its stability and reliability need more practical test;And for Lurgi and Ruthner process,which get heat through combustion,the more energy-saving and emission-reduction technology,such as oxygen-enriched combustion or pure oxygen combustion,shall be an attempt.