School of Metallurgy and Environment, Central South University, Changsha 410083, China; Chinese National Engineering Research Center for Control & Treatment of Heavy Metal Pollution, Changsha 410083, China.
State Key Joint Laboratory of Environmental Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing 100084, China.
J Environ Sci (China). 2023 Jan;123:65-82. doi: 10.1016/j.jes.2022.01.035. Epub 2022 Feb 2.
Air pollutant emissions represent a critical challenge in the green development of the non-ferrous metallurgy industry. This work studied the emission characteristics, formation mechanisms, phase transformation and separation of typical air pollutants, such as heavy metal particles, mercury, sulfur oxides and fluoride, during non-ferrous smelting. A series of purification technologies, including optimization of the furnace throat and high-temperature discharge, were developed to collaboratively control and recover fine particles from the flue gas of heavy metal smelting processes, including copper, lead and zinc. Significant improvements have been realized in wet scrubbing technology for removing mercury, fluoride and SO from flue gas. Gas-liquid sulfidation technology by applying HS was invented to recycle the acid scrubbing wastewater more efficiently and in an eco-friendly manner. Based on digital technology, a source reduction method was designed for sulfur and fluoride control during the whole aluminum electrolysis process. New desulfurization technologies were developed for catalytic reduction of the sulfur content in petroleum coke at low temperature and catalytic reduction of SO to elemental sulfur. This work has established the technology for coupling multi-pollutant control and resource recovery from the flue gas from non-ferrous metallurgy, which provides the scientific theoretical basis and application technology for the treatment of air pollutants in the non-ferrous metallurgy industry.
空气污染物排放是有色冶金行业绿色发展面临的重大挑战。本工作研究了有色冶炼过程中重金属颗粒、汞、硫氧化物和氟化物等典型空气污染物的排放特征、形成机制、相变和分离。开发了一系列净化技术，包括炉喉和高温排放优化，以协同控制和回收重金属冶炼过程（包括铜、铅和锌）烟道气中的细颗粒。在湿法洗涤技术去除汞、氟化物和 SO 方面取得了显著进展。发明了 HS 气液硫化技术，以更高效、环保的方式回收酸洗涤废水。基于数字技术，设计了一种在整个铝电解过程中减少硫和氟控制的源头减排方法。开发了低温催化降低石油焦硫含量和催化还原 SO 为元素硫的新脱硫技术。本工作建立了有色冶金烟气多污染物控制与资源回收耦合技术，为有色冶金行业空气污染物治理提供了科学理论基础和应用技术。
