کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6475432 1424970 2017 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Removal of sulfone compounds formed in oxidative desulfurization of middle distillate
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
Removal of sulfone compounds formed in oxidative desulfurization of middle distillate
چکیده انگلیسی


- The solubility of DBT-sulfone in various hydrocarbon streams was assessed in detail.
- The removal of sulfone dissolved in a model fuel on activated carbon was explored.
- A two-step process for removing the sulfones from the oxidized fuels was proposed.

How to remove the sulfone species formed in oxidative desulfurization (ODS) of middle distillates through an efficient method is crucial in a successful ODS process. In this study, the solubility of dibenzothiophene (DBT) sulfone in different hydrocarbon streams was assessed and investigated in detail, and the adsorptive removal of DBT-sulfone dissolved in a model hydrocarbon stream on activated carbon was also conducted. It was found that the saturation concentration of DBT-sulfone in the hydrocarbon streams is very low; being 0.0239 wt.% in a toluene/hexadecane (20/80) mixture and 0.0181 wt.% in a deep-hydrotreated middle distillate. The dissolved DBT-sulfone in the hydrocarbon stream can be removed easily by selective adsorption over an activated carbon adsorbent. On the basis of these findings, a two-step process for removing the sulfone species from the oxidation-treated middle distillate was proposed, which includes the first step of the centrifugal separation to remove the majority of the sulfone species (>80%) from the oxidation-treated middle distillate, followed by the second step of the selective adsorption to remove the remaining sulfone species. This two-step process may be more cost-efficient and environment-friendly to remove the sulfone species in the ODS process.

133

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Fuel - Volume 194, 15 April 2017, Pages 123-128
نویسندگان
, , , , ,