Sulfur dioxide and/or sulfur dioxide hydrate absorbent
AssigneeKorea Institute of Science and Technology
InventorsHyun Joo Lee, Seung Rok Lim, Kean Im Lee, Chang Soo Kim, Hoon Sik Kim, Ji Sik Choi, Sang Deuk Lee
Life of this patent
Estimating the term…
Abstract
Disclosed is an sorbent for removing sulfur dioxide (SO2) contained in combustion flue gases or in the atmosphere by using a diamine-based ionic liquid or a diamine compound supported by a polymer resin. To be specific, the present invention relates to a method of using a tertiary diamine compound immobilized on a polymer surface as a SO2 sorbent and also relates to a novel sorbent for absorbing or adsorbing a sulfur dioxide hydrate (SO2.H2O) formed by a bond between SO2 and water.
Claims8
A SO2 and/or SO2.H2O absorbent comprising a quaternary amine-based hydrophobic ionic liquid having a tertiary amine group and expressed by Formula 1:
- Wherein, in Formula 1, Y− represents (CF3SO2)2N—, (CF3CF2SO2)2N—, CF3SO3—, CF3CF2CF2CF2SO3—, or PF6—, and R1 to R5 respectively represent a C1-C6 alkyl group.
A SO2 and/or SO2.H2O adsorbent comprising a product of a reaction between a polymer resin and tertiary amine expressed by Formula 2:
- Wherein, in Formula 2, X− represents (CF3SO2)2N—, (CF3CF2SO2)2N—, CF3SO3—, CF3CF2CF2CF2SO3—, PF6—, CH3SO3—, or Cl—, and R1 to R4 respectively represent a C1-C6 alkyl group.
A method for absorbing SO2 and/or SO2.H2O by using a quaternary amine-based hydrophobic ionic liquid having a tertiary amine group and expressed by Formula 1:
- Wherein, in Formula 1, Y− represents (CF3SO2)2N—, (CF3CF2SO2)2N—, CF3SO3—, CF3CF2CF2CF2SO3—, or PF6—, and R1 to R5 respectively represent a C1-C6 alkyl group.
A method for adsorbing SO2 and/or SO2.H2O by using a product of a reaction between a polymer resin and tertiary amine supported by a resin and expressed by Formula 2:
- Wherein, in Formula 2, X− represents (CF3SO2)2N—, (CF3CF2SO2)2N—, CF3SO3—, CF3CF2CF2CF2SO3—, PF6—, CH3SO3—, or Cl—, and R1 to R4, respectively represent a C1-C6 alkyl group.
Dependencies are inferred from the claim text.