铝工业赤泥用于脱硫技术现状及展望
Current situation and prospect of red mud for desulfurization technology
闫飞飞 1刘万超 1练以诚 1李永艳 2张立志2
作者信息
- 1. 中铝环保节能集团有限公司,北京 101300;中铝环保节能集团有限公司北京技术中心,北京 101300
- 2. 北京铝能清新环境技术有限公司,北京 101300
- 折叠
摘要
以铝工业赤泥作为原料制备工业脱硫剂,具有来源丰富、价格低廉、理论硫容高等优点,在低成本脱硫的同时,达到了"以废制废"的目的.本文总结了铝工业赤泥在脱硫方面的应用,全面综述了赤泥干法、湿法脱除SO2和H2S的技术现状,从活性组分利用效率、能量消耗、工艺复杂程度、后续环境问题等几个维度分析对比了几种研究方向各自的优劣,并展望了未来工业化应用可能遇到的问题和进一步研究方向.指出在湿法浆液脱除烟气中SO2方面,仍需克服管道堵塞、低效率、高能耗、以及由此产生的大量稀盐处理等技术性难题,同时应对其含有的过渡金属的反应机理和活化手段进行研究;在干法脱除H2S方面,需进一步从低成本活化氧化铁的途径、极端工况环境下的适用性、废脱硫剂的资源化、以及与其他工业固废的协同处理等方面展开研究.
Abstract
As an industrial desulfurizer,aluminum industrial red mud has the advantages of abundant source,low price and high overall sulfur capacity.It achieves the purpose of"waste to waste"while desulfurizing at low cost.In this paper,the application of aluminum industrial red mud in flue gas desulfurization was summarized,and the research progress of dry and wet red mud removal SO2 and H2S in flue gas was comprehensively reviewed.The advantages and disadvantages of several research directions were compared and analyzed from several dimensions,such as utilization efficiency of active components,energy consumption,complexity of process and subsequent environmental problems.The possible problems and further research directions of market application in the future are also prospected.It is pointed out that in the SO2 removal from flue gas by wet grout process,it is still necessary to overcome the technical problems such as pipeline blockage,low efficiency,high energy consumption,and the resulting large amount of dilute salt treatment.At the same time,the reaction mechanism and activation means of the transition metals contained in it should be studied.In terms of dry removal of H2S,further research should be carried out from the aspects of low-cost activated iron oxide,applicability in extreme environment,recycling of waste desulfurizer,and collaborative treatment with other industrial solid wastes.
关键词
铝工业/赤泥消纳/赤泥脱硫/干法脱硫/湿法脱硫/SO2/H2S/赤泥综合利用Key words
aluminum industry/red mud consumption/red mud desulfurization/dry desulfurization/wet desulfurization/SO2/H2S/comprehensive utilization of red mud引用本文复制引用
基金项目
中央引导地方科技发展资金项目(226Z3702G)
黄河流域生态保护和高质量发展联合研究项目(2022-YRUC-01-0302)
出版年
2024
NETL
NSTL
万方数据