Abstract

Desulfurization technology is essential to remove sulfur content in diesel oil to achieve clean fuel products. In this study, oxidative desulfurization via ultrasonic bath equipment was utilized in conjunction with a synthesized activated carbon supported phosphotungstic acid (HPW-AC) catalyst. This research focuses on the extent of desulfurization in a simulated diesel oil. This contains 2.3% sulfur from benzothiophene (BT) and dibenzothiophene (DBT) mixed in actual diesel oil. The effects of ultrasonication time (30 min to 90 min), reaction temperature (40 °C to 70 °C), and catalyst dosage (6 wt% to 18 wt%) were examined for the oxidation of the simulated diesel oil containing BT and DBT. A 2^k full factorial design was implemented in the experimental runs to evaluate the parameters by the analysis of variance. Results showed that the curvature of the model was not significant (p-value = 0.3134). Thus, further optimization runs were no longer required to fully analyze the model. The best conditions for sulfur conversion can be attained at 30 min, 70 °C and 18 wt% HPW-AC catalyst. Furthermore, the basic diesel oil properties (density, viscosity, and calorific value) were compared before and after the desulfurization treatment process. Results indicated that the simulated diesel oil retained essentially the same properties prior to its treatment. This proves to show a promising result that can further be improved for its applicability in future industrial practice.

摘要

脱硫技术对于去除柴油中的硫含量以实现清洁燃料产品至关重要。在这项研究中，将通过超声波浴设备进行的氧化脱硫与合成活性炭负载的磷钨酸 (HPW-AC) 催化剂结合使用。本研究的重点是模拟柴油的脱硫程度。它含有 2.3% 的硫，来自混合在实际柴油中的苯并噻吩 (BT) 和二苯并噻吩 (DBT)。研究了超声处理时间（30 分钟至 90 分钟）、反应温度（40 °C 至 70 °C）和催化剂用量（6 wt% 至 18 wt%）对含 BT 和设计基准测试。2k ^_在实验运行中实施全因子设计，通过方差分析评估参数。结果显示模型的曲率不显着（p 值 = 0.3134）。因此，不再需要进一步优化运行来全面分析模型。硫转化的最佳条件可以在 30 分钟、70 °C 和 18 wt% HPW-AC 催化剂下实现。此外，比较了脱硫处理前后柴油的基本特性（密度、粘度和热值）。结果表明，模拟柴油在处理前基本保持相同的特性。这证明了一个有希望的结果，可以进一步提高其在未来工业实践中的适用性。