MTBE精馏脱硫防胶剂开发及应用研究  

DEVELOPMENT AND APPLICATION OF ANTIGUM INHIBITOR FOR MTBE DISTILLATION DESULFURIZATION

作　　者：王安琪 Wang Anqi(SINOPEC Zhenhai Refining&Chemical Company,Ningbo,Zhejiang,315207)

机构地区：[1]中国石油化工股份有限公司镇海炼化分公司,浙江宁波315207

出　　处：《石油化工设计》2020年第4期50-55,I0003,共7页Petrochemical Design

摘　　要：甲基叔丁基醚(MTBE)作为重要的油品调合组分,能有效提高汽油辛烷值。为符合国家V型汽油混合标准的要求,MTBE产品的硫含量需降低到10 mg/L以下。多数炼厂采取萃取精馏工艺对MTBE进行深度脱硫,但萃取精馏过程中塔釜经常因有机硫的富集而产生结胶现象,胶质会严重影响塔釜传热效率而不得不间歇性停产清理。通过模拟精馏实验探索了精馏过程中塔顶及塔釜的硫含量变化、结胶条件以及不同回流比下硫含量变化趋势和对精馏的影响,并开发了新的经济有效的精馏脱硫防胶剂。Methyl tert-butyl ether(MTBE),as an important oil blending component,can effectively improve the octane number of gasoline.In order to meet the requirements of national V gasoline blending standards,the sulfur content of MTBE products must be reduced to less than 10 mg/L.Extractive distillation process is generally used in the industry for the deep desulfurization of MTBE,but gumming often occurs due to the enrichment of organic sulfur in the bottom of distillation column,the colloid will seriously affect the heat transfer efficiency at the tower bottom,and the unit has to be shut down intermittently for cleaning up.The variation of sulfur content in the top and the bottom of distillation column,the gumming conditions and the trend of sulfur content and its effect on distillation at different reflux ratios were explored by simulated distillation experiment,and new cost-effective antigum inhibitor for distillation desulfurization was developed.

关 键 词：MTBE 精馏 深度脱硫 防胶剂 

分 类 号：TE624.55[石油与天然气工程—油气加工工程]