高硫煤硫的脱除及其在配煤炼焦中的应用研究进展  

Research Progress on Desulfurization of High-sulfur Coal and Its Application in Coal-blending Coking

作　　者：曹先中 李占库 康士刚[1] 水恒福[1] CAO Xianzhong;LI Zhanku;KANG Shigang;SHUI Hengfu(Anhui Provincial Key Laboratory of Coal Clean Conversion and Low-carbon Utilization,Anhui University of Technology,Maanshan 243032,China)

机构地区：[1]安徽工业大学煤清洁转化与低碳利用安徽省重点实验室,安徽马鞍山243032

出　　处：《安徽工业大学学报(自然科学版)》2025年第2期118-135,共18页Journal of Anhui University of Technology(Natural Science)

基　　金：国家自然科学基金项目(22178002)。

摘　　要：随着低硫优质炼焦煤资源的大量消耗,高硫煤的高效和资源化利用问题凸显,而硫的有效脱除是解决这一问题的关键。煤自身的性质,特别是其变质程度以及硫的赋存形态与分布直接影响煤转化过程中硫的迁移行为。基于此,本文综述煤中硫的赋存形态及其脱除方法,包括煤热解过程中硫的热转化行为,以及高硫煤在配煤炼焦过程中的应用。结果表明:煤的硫含量及其赋存形态受煤生成时期沉积环境的影响较大,不同形态硫分解的温度区间不同,导致在热解过程中其转化行为存在明显差异。因此,需要结合现有或采用新的表征方法,精确识别煤中硫的含量及其形态分布。采用机器学习结合先进的算法挖掘出统计数据蕴含的规律,是煤热解脱硫研究的新方向。通过调整配合煤的组成,利用高挥发分煤裂解产生的富氢自由基作为原位供氢体,与含硫自由基结合,促使生成的含硫气体随挥发分一同逸出;同时,通过调控高挥发分煤中的矿物质(尤其是碱性化合物)组成,降低其固硫作用,从而获得低硫高质量焦炭,是高硫煤在炼焦配煤中有效应用的可行途径。此外,研究煤炭化过程中传质效应对硫调控的作用机制,对于抑制含硫组分与焦炭的表面反应、实现高硫炼焦煤的清洁转化及其在配煤炼焦中的高效利用具有重要意义。With the extensive utilization of low-sulfur,high-quality coke-making coal resources,the efficient and resource utilization of high-sulfur coal has become increasingly urgent,and the removal of sulfur is the key to addressing this issue.The inherent properties of coal,particularly its coalification degree and the existed forms and distribution of sulfur,directly impact the migration behavior of sulfur during coal conversion processes.Based on this,the existed forms of sulfur in coal and the methods for its removal were reviewed,including the thermal transformation behavior of sulfur during coal pyrolysis,as well as the application of high-sulfur coal in the blending process for coke-making.The results indicate that the sulfur content in coal and its existed forms are closely related to the sedimentary environment during the coal formation.Different forms of sulfur decompose within distinct temperature ranges,leading to notable differences in their transformation behaviors during pyrolysis.Therefore,it is necessary to accurately identify the content and forms of sulfur in coal by combining existing or adopting new characterization methods.The use of machine learning combined with advanced algorithms to uncover patterns in statistical data represents a novel direction in the research of sulfur removal during coal pyrolysis.By adjusting the composition of blended coal,the hydrogen-rich radicals generated from the cracking of high-volatile coal can serve as in-situ hydrogen donors,combining with sulfur-containing radicals to allow the generated sulfur-containing gases to escape with the volatiles.Simultaneously,regulating the mineral composition(especially alkaline compounds)in high-volatile coal can reduce its sulfur-fixing effect,thereby producing low-sulfur,high-quality coke.This is an effective approach for the application of high-sulfur coal in coal-blending and coke-making.Additionally,investigating the mechanism of mass transfer effects on sulfur regulation during coal carbonization is crucial for inhibiting t

关 键 词：高硫煤 硫赋存形态 脱硫 配煤炼焦 资源化利用 清洁转化 煤热解 

分 类 号：TQ530[化学工程—煤化学工程]