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Investigating Adsorptive Deep Desulfurization of Fuels Using Metal-Modified Adsorbents and Process Intensification by Acoustic Cavitation
Industrial & Engineering Chemistry Research ( IF 3.8 ) Pub Date : 2018-11-29 , DOI: 10.1021/acs.iecr.8b04043 Nalinee B. Suryawanshi 1 , Vinay M. Bhandari 1 , Laxmi Gayatri Sorokhaibam 2 , Vivek V. Ranade
Industrial & Engineering Chemistry Research ( IF 3.8 ) Pub Date : 2018-11-29 , DOI: 10.1021/acs.iecr.8b04043 Nalinee B. Suryawanshi 1 , Vinay M. Bhandari 1 , Laxmi Gayatri Sorokhaibam 2 , Vivek V. Ranade
Affiliation
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The harmful impact on the environment due to SOx emissions from fuels and increasingly strict norms over the years have amplified deep-desulfurization challenges, consequently enhancing attractiveness of adsorptive separations. The present work focuses on investigating metal modifications and process intensification using acoustic cavitation for improving sulfur removal behavior and selectivity. The proof of concept was elucidated using two model adsorbents: one commercial Shirasagi TAC adsorbent and another newer adsorbent derived from Cassia fistula biomass. Single- and double-metal modifications were studied using zinc, cobalt, nickel, and copper. An attempt was made to further improve the sulfur removal using process intensification using acoustic cavitation coupled with adsorption. The removal of three refractory sulfur compounds (viz. thiophene, benzothiophene, and dibenzothiophene) was studied, and the performance was compared for both single- and double-metal modifications apart from process intensification. In the case of TAC, a high capacity for sulfur removal, up to 23 mg S/g, was obtained, especially for dibenzothiophene. Process intensification using cavitation coupled with adsorption further improved sulfur removal to the extent of 100%, and for metal-modified TAC, a capacity increase up to 38 mg S/g for dibenzothiophene was obtained. The results indicate that the combined effect of metal modification and process intensification can substantially improve the sulfur-removal efficiency of carbon adsorbents.
中文翻译：
使用金属改性的吸附剂研究燃料的吸附性深度脱硫并通过声空化强化工艺
对环境由于所谓的有害影响X从燃料的排放量和日益严格的规范多年来放大深脱硫的挑战，从而增强吸附分离的吸引力。本工作着重于研究使用声空化技术改进金属的改性和工艺强化，以改善硫的去除性能和选择性。使用两种模型吸附剂阐明了概念验证：一种商业Shirasagi TAC吸附剂，另一种源自决明子瘘的新型吸附剂生物质。研究了使用锌，钴，镍和铜进行的单金属和双金属改性。试图通过使用声空化结合吸附的工艺强化来进一步改善硫的去除。研究了三种难处理硫化合物（即噻吩，苯并噻吩和二苯并噻吩）的去除方法，并比较了除工艺强化外单金属和双金属改性的性能。对于TAC，特别是二苯并噻吩的脱硫能力高达23 mg S / g。使用空化和吸附的工艺强化进一步提高了100％的硫去除率，对于金属改性的TAC，二苯并噻吩的容量提高到38 mg S / g。
更新日期：2019-02-07
中文翻译：
使用金属改性的吸附剂研究燃料的吸附性深度脱硫并通过声空化强化工艺
对环境由于所谓的有害影响X从燃料的排放量和日益严格的规范多年来放大深脱硫的挑战，从而增强吸附分离的吸引力。本工作着重于研究使用声空化技术改进金属的改性和工艺强化，以改善硫的去除性能和选择性。使用两种模型吸附剂阐明了概念验证：一种商业Shirasagi TAC吸附剂，另一种源自决明子瘘的新型吸附剂生物质。研究了使用锌，钴，镍和铜进行的单金属和双金属改性。试图通过使用声空化结合吸附的工艺强化来进一步改善硫的去除。研究了三种难处理硫化合物（即噻吩，苯并噻吩和二苯并噻吩）的去除方法，并比较了除工艺强化外单金属和双金属改性的性能。对于TAC，特别是二苯并噻吩的脱硫能力高达23 mg S / g。使用空化和吸附的工艺强化进一步提高了100％的硫去除率，对于金属改性的TAC，二苯并噻吩的容量提高到38 mg S / g。
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