摘要
介绍了针对φ(SO_2)低于5%的低浓度制酸系统将φ(SO_2)提高到10%后转化工序技改工艺流程、设备选型和生产实践情况。转化工序由"2+2"4段转化、ⅣⅢⅠ-Ⅱ换热流程改为"3+1"4段转化、ⅣⅠ-ⅢⅡ换热流程,采用进口催化剂,2台吸收塔入口各增设1台热管锅炉。改造后,生产稳定,尾气排放ρ(SO_2)为268 mg/m^3,2台锅炉共产出低压蒸汽2.5 t/h,达到了节能减排的效果,降低了生产成本。
The process flow, equipment selection, operation and practice of the upgraded technology, which were applied in the conversion gas with concentration of sulphur dioxide increased to 10% from copper smelter gas containing sulphur dioxide less than 5% are introduced. The conversion process changed from ＂2 ＋ 2＂ four catalyst layers conversion, Ⅳ Ⅲ Ⅰ -Ⅱ heat exchange process to ＂3＋1＂ four catalyst layers conversion and Ⅳ Ⅰ -Ⅲ Ⅱ heat exchange process. Imported catalyst was used. One heat pipe boiler was added at the inlet of each absorption tower. This results in stable operation and the sulphur dioxide concentration emission gas of 268 mg/m^3, generated low pressure steam of 2. 5 t/h by the boilers, which helped save energy, reduce emission and lower cost.
出处
《硫酸工业》
CAS
2016年第3期5-8,共4页
Sulphuric Acid Industry
关键词
铜冶炼烟气
硫酸生产
技术改造
生产实践
copper smelter gas
sulphuric acid production
technological innovation
practice
