CAJ | 학술논문

根据国家第五阶段车用汽油标准对汽油硫含量的要求，提出了满足该标准的汽油添加剂甲基叔丁基醚（MTBE）中硫含量的控制指标。分析了 MTBE 中硫化物的组成、来源及富集效应产生的原因，提出了富集系数的准确的计算方法。计算结果表明，当原料液化气中异丁烯质量分数为15%～30%时，富集系数最高可达4.44。在比较其他引起 MTBE 中硫含量升高因素的基础上，认为富集效应是导致其含硫量较原料液化气大幅升高以致超标的重要原因。同时研究了液化石油气精脱硫及 MTBE 蒸馏脱硫两种深度脱硫工艺，通过全面对比分析，认为MTBE双塔脱硫工艺在设备投资、能耗、吸附剂使用等方面均具有优势，并且可以将MTBE中的硫含量稳定地控制在3mg/kg以下。低于10mg/kg的控制指标要求，更适合于国家第五阶段车用汽油标准的添加剂的生产。
근거국가제오계단차용기유표준대기유류함량적요구，제출료만족해표준적기유첨가제갑기숙정기미（MTBE）중류함량적공제지표。분석료 MTBE 중류화물적조성、래원급부집효응산생적원인，제출료부집계수적준학적계산방법。계산결과표명，당원료액화기중이정희질량분수위15%～30%시，부집계수최고가체4.44。재비교기타인기 MTBE 중류함량승고인소적기출상，인위부집효응시도치기함류량교원료액화기대폭승고이치초표적중요원인。동시연구료액화석유기정탈류급 MTBE 증류탈류량충심도탈류공예，통과전면대비분석，인위MTBE쌍탑탈류공예재설비투자、능모、흡부제사용등방면균구유우세，병차가이장MTBE중적류함량은정지공제재3mg/kg이하。저우10mg/kg적공제지표요구，경괄합우국가제오계단차용기유표준적첨가제적생산。
The control index of sulfides content in gasoline additive MTBE was introduced based on the National 5th Stage Motor Vehicle Gasoline Standard. A new algorithm for enrichment coefficient calculation was given based on the analysis of sulfides composition, sources and enrichment effect in MTBE. The results showed that enrichment coefficient was up to 4.44 at ethylene content in LPG between 15%~30%by weight. The analysis of other influencing factors showed that enrichment effect was the most important factor. As the investigation of MTBE desulfurization process by distillation and LPG fine desulfurization process demonstrated that two-column MTBE desulfurization process by distillation was more suitable in new gasoline additive production,considering its relatively low invest cost,energy cost and use of adsorbent,and the sulfides content in MTBE can be controlled under 3mg/kg.