石蜡嗅味影响因素探讨与工艺改进方案研究

摘要

探讨了影响石油蜡嗅味的因素及嗅味物质的化学组成.通过嗅味物质阈值判断出影响中国石化济南分公司(济南炼化)石油蜡嗅味的主要物质是甲苯和环己烷.分析了济南炼化石油蜡的嗅味物质来源是酮苯脱蜡脱油工艺和加氢工艺;通过试验研究和理论分析,确定了采用真空与蒸汽汽提相结合除嗅工艺方案.济南炼化石油蜡经除嗅工艺单元后可以稳定生产满足嗅味指标不大于1号的全精炼蜡产品.%Factors influencing the odor of petroleum wax product and the chemical compositions of the materials which give odor of waxes produced in SINOPEC Jinan Company were discussed.According to quantitative analysis results of volatiles and identification thresholds of odor materials,the toluene and cyclohexane are determined as the main compounds from ketone-benzol dewaxing process and lube oil hydrofining process,which cause the odor of wax.The steam stripping under vacuum condition technology for deodorization was adopted based on the experiments and theoretical analysis.By the process,fully refined wax product with the odor less than 1.0 can be stably produced.