Separation of Sulfur-Containing Compounds From Diesel by Oxidation Followed by Solvent Extraction in a Single Drop Column

Abstract

Oxidative desulfurization (ODS) is an attractive complementary or alternative process for the hydrodesulfurization (HDS) process due to advantages such as mild operating conditions. In the ODS process, the sulfur-containing compounds are oxidized first to polar sulfoxide and sulfone products and then these polar compounds are separated using solvent extraction or an adsorption process. In the present study, the separation of oxidized sulfur-containing compounds of diesel as a real fuel has been investigated using extraction in a single drop column. The oxidation system was hydrogen peroxide/formic acid. The selected solvent for the extraction of oxidized sulfur-containing compounds was dimethylformamide (DMF). In single drop tests, the effect of various parameters including the drop size (1.70-4.60 mm) and column height (228-550 mm) on the different parameters such as drop velocity and sulfur concentration in the dispersed and continuous phases has been investigated. The outcome of this study provides valuable insights for designing the extraction column for separation of oxidized sulfur-containing compounds from middle distillate fuels in an ODS process.

Tenacidade do aço carbono SAE 1070 após o tratamento térmico de têmpera e diferentes temperaturas de revenimento

“…O processo consiste na oxidação dos compostos organossulfurados por um agente oxidante, como ozônio, óxidos de nitrogênio e peroxido de hidrogênio, sendo este último o mais comumente utilizado devido sua elevada atividade catalítica, baixo custo agregado e disponibilidade comercial (Dana et al, 2019;Pawelec et al, 2011). Na etapa inicial do método, a partir da inserção de oxigênio proveniente do agente oxidante, é gerado um composto sulfóxido seguido de formação de sulfona, conforme exemplo na figura 3 (Aguiar, 2007).…”

Estudo da utilização de resíduos industriais e agroindustriais em compósitos de matriz cimentícia

“…O processo consiste na oxidação dos compostos organossulfurados por um agente oxidante, como ozônio, óxidos de nitrogênio e peroxido de hidrogênio, sendo este último o mais comumente utilizado devido sua elevada atividade catalítica, baixo custo agregado e disponibilidade comercial (Dana et al, 2019;Pawelec et al, 2011). Na etapa inicial do método, a partir da inserção de oxigênio proveniente do agente oxidante, é gerado um composto sulfóxido seguido de formação de sulfona, conforme exemplo na figura 3 (Aguiar, 2007).…”

Key Factors Affecting the Development of Oxidative Desulfurization of Liquid Fuels: A Critical Review

“…Various types of extractants were surveyed for extracting sulfones. The extraction agents, including acetonitrile (MeCN), ,,,− ethanol, ,,, methanol, − propanol, , acetone, N , N -dimethylformamide (DMF), ,,,,− 2-ethoxyethanol (C 4 H 10 O 2 ), ,, γ-butyrolactone (C 4 H 6 O 2 ), ,,, dimethyl sulfoxid (DMSO), ,,,, ethylene glycol, ,, polyethylene glycol (PEG), , sulfolane, 1-ethyl-3-methyl imidazolium ethyl sulfate (EMIES), n -methyl-2-pyrrolidone (NMP), ,, n -heptane, n -hexane, caustic soda (NaOH), , furfural, , furfural alcohol, acetic acid, carbon tetrachloride (CCl 4 ), water, ,, [Omim]­BF 4 , [Bmim]­PF 6 , [C 8 mim]­PF 6 , [C 4 mim]­PF 6 , [CH 2 COOHPy]­[HSO 4 ], deep eutectic solvents, − ,, ethyl acetate, dichloroethane, dichloromethane, and the combination of extractants such as dichloroethane/methanol,…”

“…Various types of extractants were surveyed for extracting sulfones. The e x t r a c t i o n a g e n t s , i n c l u d i n g a c e t o n i t r i l e (MeCN), 41,72,171,295−298 ethanol, 171,192,299,300 methanol, 299−304 propanol, 300,301 acetone, 301 N,N-dimethylformamide (DMF), 5 3 , 9 4 , 1 7 1 , 2 9 2 , 3 0 4 − 3 1 0 2-ethoxyethanol (C 4 H 10 O 2 ), 292,306,307 γ-butyrolactone (C 4 H 6 O 2 ), 269,292,306,307 dimethyl sulfoxid (DMSO), 69,94,281,309,311 ethylene glycol, 94,165,221 polyethylene glycol (PEG), 162,196 sulfolane, 281 1ethyl-3-methyl imidazolium ethyl sulfate (EMIES), 312 nmethyl-2-pyrrolidone (NMP), 53,165,304 n-heptane, 313 n-hexane, 305 caustic soda (NaOH), 20,314 furfural, 94,221 furfural alcohol, 221 acetic acid, 286 carbon tetrachloride (CCl 4 ), 288 water, 137,165,315 [Omim]BF 4 , 141 [Bmim]PF 6 , 316 [C 8 mim]-PF 6 ,…”