高浓度冶炼烟气制酸预转化工艺研究与实践

发布时间：2018-05-12 07:04

  本文选题：冶炼烟气 + 高浓度SO2　； 参考：《兰州大学》2015年硕士论文

【摘要】：近年来,随着国内高浓度磷肥、磷复合肥产业的迅速发展,对硫酸产品的需求量也日益增长。广西防城港是北部湾港口城市,是距金川集团股份有限公司海外主原料产地距离最近、建设条件最好的深水港口。广西金川有色金属有限公司是金川集团股份有限公司在沿海地区新建的全资子公司,铜的年产量高达400 Kt。公司采用“双闪”工艺炼铜,冶炼过程产生的浓度高达30%的SO2冶炼烟气,是制取硫酸的有利资源。本论文主要针对该高浓度预转化技术,对投产后的工艺控制指标和生产数据统计两个方面做了一定的基础分析和研究。依据转化、吸收等基础理论,对工艺指标进行了优化和调控,探索得到该预转化技术的最优工艺指标,包括转化率、吸收率等的最佳运行值。最终取得的结果说明,通过调整预转化器、转化器入口的温度和各换热设备之间的热量交换,转化率完全可以控制在大于99.95%,总吸收率≥99.98%,转化率、总吸收率比优化前分别提高了0.05%、0.08%。经过对该高浓度预转化技术工艺条件的优化调控,使该工艺的技术指标在全国同行业里处于领先水平,使该项目按期达产达标,同时也为国内其他新建高浓度冶炼烟气制酸项目起到了一定的示范、引领和借鉴作用。
[Abstract]:In recent years, with the rapid development of domestic high concentration phosphate fertilizer and phosphorus compound fertilizer industry, the demand for sulphuric acid products is also increasing day by day. Guangxi Fangchenggang is the port city of Beibu Gulf, which is the closest to the overseas main raw material producing area of Jinchuan Group Co., Ltd. Guangxi Jinchuan Nonferrous Metals Co., Ltd. is a newly established wholly owned subsidiary of Jinchuan Group Co., Ltd. in coastal areas. The annual output of copper is as high as 400 KT. The company adopts "double flash" process to smelt copper. The concentration of SO2 smelting flue gas is up to 30%, which is a favorable resource for sulphuric acid production. This paper mainly aims at the high concentration preconversion technology, and makes some basic analysis and research on the process control index and production data statistics after putting into production. Based on the basic theory of transformation and absorption, the process parameters were optimized and adjusted, and the optimum process parameters, including the conversion rate and the optimum operating value of the absorptivity, were obtained. The final results show that by adjusting the temperature at the inlet of the converter and the heat exchange between the various heat exchangers, the conversion rate can be completely controlled over 99.95, the total absorptivity 鈮，

本文编号：1877609