金川集团化工厂铜冶炼烟气制酸中温位余热回收  

Recovery of Medium-temperature Waste Heat in Acid-making with Copper Smelting Gas in Chemical Plant of Jinchuan Group

作　　者：孙治忠[1] 

机构地区：[1]金川集团股份有限公司化工厂,甘肃金昌737100

出　　处：《有色金属工程》2015年第3期100-104,共5页Nonferrous Metals Engineering

摘　　要：阐述金川集团化工厂530 kt/a铜冶炼烟气制酸系统扩能改造和余热回收前存在的问题,在遵循尽可能保留现有工艺管线和保证余热高效回收的原则上对转化工艺进行改造完善,将转化流程由原设计的"3+1/Ⅳ.Ⅰ-Ⅲ.Ⅱ"四段转化改为"3+2/Ⅴ.Ⅰ-Ⅲ.Ⅱ.Ⅳ"五段转化工艺流程,研发适合冶炼烟气制酸系统的分离型热管余热回收工艺技术。生产实践证明,该工艺在确保转化热平衡的基础上提升转化率,优化系统工艺技术指标,实现回收转化中温位富余热量生产饱和蒸汽,保证制酸系统与铜冶炼系统的匹配化生产,节能减排效益可观。The problems of 530 kt/a sulphuric acid production system with copper smelting gas in Chemical Plant of Jinchuan Group Corporation Ltd before the transformation for the output expansion and waste heat recovery are illustrated. The conversion technology is improved and completed following the principle of retaining existing process pipeline as possible and ensuring high efficient recovery of waste heat. The conversion process is optimized to five-layer conversion process of 3 ＋ 2/Ⅴ.Ⅰ-Ⅲ.Ⅱ.Ⅳ from original four-layer of 3 ＋ 1/Ⅳ.Ⅰ-Ⅲ.Ⅱ. The waste heat recovery technology with the separated type pipe is developed, which is suitable for acid-making system with smelting gas. It is proved by the production practice that the conversion rate is improved on the basis of ensuring the thermal equilibrium and the technology index is optimized. The medium-temperature waste heat is recovered and applied to saturated steam production, and the productions of the acid system and copper smelting system are matched, the profit from the energy conservation and emission reduction is remarkable.

关 键 词：冶炼烟气制酸 中温位余热 转化系统改造 分离型热管 

分 类 号：X758[环境科学与工程—环境工程] X701