溶剂法提纯硫磺的工艺研究  

Study on purification process of sulfur by solvent method

作　　者：杨立[1] 罗孝雄[1] 黄俊莉[1] 李静[1] 骆敏珠[1] YANG Li;LUO Xiaoxiong;HUANG Junli;LI Jing;LUO Minzhu(Chuanzhong Oil and Gas Mine,Southwest Oil and Gas Field Company,PetroChina,Suining 629000,China)

机构地区：[1]中国石油西南油气田分公司川中油气矿,四川遂宁629000

出　　处：《无机盐工业》2024年第7期69-73,95,共6页Inorganic Chemicals Industry

摘　　要：为了解决天然气净化过程中副产物硫磺提纯难度大、提纯后硫磺纯度低的问题,结合溶剂萃取法操作简单、成本低等优势,利用相似相溶的原理,以CS2为溶剂设计了一种用溶剂法提纯硫磺的工艺。通过干燥时间考察了硫磺渣中的含水量,以硫磺产率为指标,考察了硫磺渣干燥时间、液固比、浸取时间、浸取温度和球磨粉碎对硫磺产率的影响,并通过XRD及ICP分析了纯化后硫磺的纯度。结果表明,硫磺渣干燥时间为60 min、液固比(体积质量比,m L/g)为8∶1、浸取时间为30 min、浸取温度为30℃及球磨成粉时,硫磺产率最佳。相较于传统的熔融法(85.7%)和气化法(85.37%)工艺,溶剂法工艺提纯硫磺后产率高达87.8%,提高了2.5%左右,且提纯后硫磺的纯度高达99.89%。该溶剂法提纯硫磺的工艺具有产率较高且纯度高、操作简单的优势,为有效处理硫磺提纯提供了技术路线,同时在硫磺纯化方面具有广阔的应用前景。In order to address the challenges of purifying sulfur as a byproduct of the natural gas purification process and achieving high purity,combining the advantages of simple operation and low cost of solvent extraction method,and utilizing the principle of similar solubility,a process for purifying sulfur using solvent method was designed using CS2 as the solvent.The moisture content in sulfur slag was investigated through drying time,and the effects of drying time,liquidsolid ratio,leaching time,leaching temperature,and ball milling on sulfur yield were investigated using sulfur yield as an indicator.The purity of purified sulfur was analyzed by XRD and ICP.The results demonstrated that the optimal sulfur yield was achieved with a drying time of 60 min,a liquidsolid ratio of 8∶1(mL/g),a leaching time of 30 min,a leaching temperature of 30℃,and sulfur crushed into powder through ball milling.The solvent method yielded a remarkable 87.8%,representing a 2.5%increase compared to traditional sulfur purification methods such as the melting method(85.7%)and the gasification method(85.37%).Furthermore,the purified sulfur exhibited an impressive purity of 99.89%.The solvent method offered significant advantages including high yield,high purity,and simplicity of operation,thereby providing an effective technical approach for sulfur purification and holding potential for widespread application.

关 键 词：硫磺 二硫化碳 溶剂法 提纯 

分 类 号：TQ125.11[化学工程—无机化工]