Diisopropanolamine dioxide

Licensed by Shell the Sulfinol process combines the properties of a physical and a chemical solvent. The Sulfinol solution consists of a mixture of sulfolane (tetrahydrothiophene 1-1 dioxide), which is a physical solvent, diisopropanolamine (DIPA), and water. DIPA is a chemical solvent that was discussed under the amines. 

Simultaneous Mass Transfer of Hydrogen Sulfide and Carbon Dioxide with Complex Chemical Reaction in an Aqueous Diisopropanolamine Solution... 

The Sulfinol process [719]-[722] cannot strictly be classified as a physical solvent process, as the solvent is a mixture of sulfolane (tetrahydrothiophene 1,1-dioxide), DIPA (diisopropanolamine), and water in a ratio of about 45 40 10. Sulfolane is a true physical solvent, whereas the DIPA is a chemically acting component. To achieve a higher C02/H2S selectivity, DIPA may be substituted by MDEA (methyldiethanola-mine) in the M-Sulfinol process. In partial oxidation process a concept with two separate Sulfinol units is preferred the first ahead of the shift conversion (gas composition for example C02 5.4 vol%, H2S 0.5 vol%), and the second one for recovery of sulfur-free C02affer the shift conversion (feed gas for example C02 33vol%, H2S 0 vol %). 

Bis (2-propanol) amine. See Diisopropanolamine Bis (2-pyridylthio) zinc, 1,1 -dioxide. See Zinc pyrithione Bis (8-quinolinato) copper Bis (quinolin-8-olato) copper. See Copper 8 quinolinolate... 

Sulfinol (Shell) Tetrahydrodiiophene dioxide (sulfolMie) plus diisopropanolamine H2S, CO2 selective toH2S... 

Catbon dioxide and hydrogen sulfide Sulfinol Diisopropanolamine, sulfidane, and water... 

The Sulfinol solvent consists of sulfolane (tetrahydrothiophene dioxide) and an alkanolamine, usually diisopropanolamine (DIPA) or methyldiethanolamine (MDEA), and water. The solvent with DIPA is referred to as Sulfinol-D or simply as Sulfinol, and the solvent with MDEA is referred to as Sulfinol-M. Typically, Sulfinol-D is used when essentially complete removal of both hydrogen sulfide and carbon dioxide and deep removal of carbonyl sulfide is desired. Sulllnol-M is used for the selective removal of hydrogen sulfide over carbon dioxide and the partial removal of carbonyl sulfide (Nasir, 1990). Both Sulfinol solvents are reported to be capable of removing mercaptans and alkyl sulfides to very low levels. 

ADIP [Possibly an acronym of DIPA, diisopropanolamine] A process for removing hydrogen sulfide, mer-captans, carbonyl sulfide, and carbon dioxide from refinery streams by extraction into an aqueous solution of diisopropanolamine or methyl diethanolamine. Developed by Shell and licensed by Shell Global Solutions International BV. More than 400 units were operating in 2000. 

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