Method of increasing mass transfer rate of acid gas scrubbing solvents

• US 9,409,125 B2
• Filed: 03/29/2013
• Issued: 08/09/2016
• Est. Priority Date: 03/29/2013
• Status: Active Grant

• Current Assignee: University Of Kentucky Research Foundation (University of Kentucky)
• Original Assignee: University Of Kentucky Research Foundation (University of Kentucky)
• Inventors: Remias, Joseph E., Lippert, Cameron A., Liu, Kunlei
• Primary Examiner(s): Johnson, Jonathan
• Assistant Examiner(s): NASSIRI MOTLAGH, ANITA
• Application Number:
  US13/853,292
• Publication Number:
  US 20140294705A1
• Time in Patent Office: 1,229 Days
• Field of Search: None
• US Class Current: 1/1
• CPC Class Codes: B01D 2252/20421 Primary amines
• CPC Class Codes: B01D 2252/20431 Tertiary amines
• CPC Class Codes: B01D 2252/20442 containing a piperidine-ring
• CPC Class Codes: B01D 2252/20447 containing a piperazine-ring
• CPC Class Codes: B01D 2252/20452 containing a morpholine-ring
• CPC Class Codes: B01D 2252/20484 with one hydroxyl group
• CPC Class Codes: B01D 2252/20489 with two or more hydroxyl groups
• CPC Class Codes: B01D 2252/602 Activators, promoting agents, catalytic agents or enzymes
• CPC Class Codes: B01D 2255/70 Non-metallic catalysts, additives or dopants
• CPC Class Codes: B01D 2256/245 Methane
• CPC Class Codes: B01D 2257/504 Carbon dioxide
• CPC Class Codes: B01D 53/1475 Removing carbon dioxide
• CPC Class Codes: B01D 53/1493 Selection of liquid materials for use as absorbents
• CPC Class Codes: B01D 53/8671 Removing components of defined structure not provided for in B01D53/8603 - B01D53/8668
• CPC Class Codes: B01D 53/8681 Acidic components B01D53/8687 takes precedence
• CPC Class Codes: B01J 31/0271 also containing elements or functional groups covered by B01J31/0201 - B01J31/0231
• CPC Class Codes: C07F 15/065 without a metal-carbon linkage
• CPC Class Codes: C07F 3/003 without C-Metal linkages
• CPC Class Codes: C07F 3/06 Zinc compounds
• CPC Class Codes: C07F 9/5456 Arylalkanephosphonium compounds
• CPC Class Codes: C07F 9/5463 : Compounds of the type "quasi-phosphonium", e.g. (C)a-P-(Y)b wherein a+b=4, b>=1 and Y=heteroatom, generally N or O
• CPC Class Codes: Y02C 20/40 : of CO2
• CPC Class Codes: Y02P 20/151 : Reduction of greenhouse gas [GHG] emissions, e.g. CO2

Abstract

A method of increasing the overall mass transfer rate of acid gas scrubbing solids is disclosed. Various catalyst compounds for that purpose are also disclosed.

Claims

1. A catalyst compound having a chemical formula:

2. A method of increasing overall mass transfer rate of acid gas scrubbing solvents, comprising:

adding the catalyst compound of claim 1 to a fluid stream including an acid gas and an acid gas scrubbing solvent.

3. The method of claim 1 wherein said acid gas scrubbing solvent includes an amine.

4. The method of claim 1, wherein said acid gas scrubbing solvent includes a mixture of a primary or secondary amine and a tertiary amine.

5. The method of claim 1, wherein said acid gas scrubbing solvent includes a material selected from a group consisting of monoethanolamine (MEA), 1-amino-2-propanol (1A2P), 3-amino-1-propanol, 2-amino-1-propanol, 2-amino-1-butanol, 1-amino-2-butanol, 3-amino-2-butanol, 2-(alkylamino)ethanonol (MAE), diglycolamine, morpholine, piperazine (PZ), 1-methylpiperazine (NMP), 2-methylpiperazine, hydroxypiperadine, hydroxyalkylpiperazine, 2-piperidineethanol, N-aminoethylpierazine (AEP), aminopropylmorpholine, 4-aminopiperidine, 3-aminopiperidine, 2-amino-piperidine, diethanolamine, 2-amino-2-methyl-1-propanol (AMP), diethanolamine (DEA), diisopropanolamine (DIPA), glycine, alanine, β

-alannine, sarcosine, isopropanolamine, benzylamine, methyldiethanolamine (MDEA), triethanolamine (TEA), alkali carbonate, N,N,-dialkylethanolamine, N,N,N′

,N′

-tetraalky-1,8-naphthalenediamine, N,N,-dialkylbenzylamine, 1,4-dialkylpiperazine, N,N,N′

,N′

-tetraalkyl-1,6-hexanediamine, N,N,N′

,N′

-tetraalkyl-1,5-pentanediamine, N,N,N′

,N′

-tetraalkyl-1,4-butanediamine, N,N,N′

,N′

-tetraalkyl-1,3-propanediamine, N,N,N′

,N′

-tetraalkyl-1,2-ethanediamine, N,N,N′

,N′

-tetrakis(2-hydroxyethyl)ethylenediamine, N,N,N′

,N″

-pentaalkyldiethylenetria mine, N,N,N′

,N″

-pentaalkyldipropylaminetriamine, N,N,-dialkylcyclohexylamine, N,N,N′

,N′

-tetraalkylbis(aminoethyl)ether, N,N,-dimethyl-2(2-aminoethoxy)ethanol, where alkyl represents any methyl, ethyl, propyl, butyl isomer, and mixtures thereof.

6. The method of claim 1, wherein said catalyst compound is provided at a concentration of between about 0.05 mM and about 100 mM.