BAYQIK~——高浓度二氧化硫烟气制酸创新工艺

BAYQIK~-Process for treating high-grade SO_2 gases from non-ferrous metallurgical plants using innovative technology

介绍拜耳技术服务公司开发的准等温接触高浓度二氧化硫烟气制酸创新工艺BAYQIK。详述该工艺的理论基础、反应器结构、模型建立、中间试验以及在铅冶炼烟气制酸装置中的应用。BAYQIK艺的特点在于采用列管式固定床反应器，传统钒催化剂装在管内，冷却介质在壳程流动。氧化过程放出的热量被连续移走，从而使催化剂始终处于可承受的最高温度以下，即使反应器进气φ（SO2）超过50％。BAYQIK工艺可提供各种经济和工艺优点，包括可降低投资与操作成本，对于新建装置和扩能改造项目同样适用。

An innovative technology for sulphuric acid production using high-grade SO2 developed by Bayer leclanology Services, QUASI-Isothermal Kontact process BAYQIK, is described with respects to its theoretical fundamental, reactor structure, model development, piloting and implementation to a lead smelting process. BAYQIK process is characterized by a multi-tube fixed-bed reactor, in which commercially available catalysts are placed inside the tubes, with a cooing medium flowing outside tubes. The heat produced during exothermic reactions is continuously dissipated in a way that the catalyst temperature is always underneath the allowable maximum, even with higher than 50 vol. % SO2 inlet concentration. BAYQIK process offers a variety of economic and process benefits, including the reduction of both capital investment and operating expenses. These benefits can be achieved to the same extent for revamp projects for capacity enhancement as well as for completely new plants.