Battelle Memorial Institute

David C Cantu

David J Heldebrant

Phillip K Koech

Vassiliki-Alexandra Glezakou

Roger J Rousseau

Deepika Malhotra

Jordan P Page

Robert C Perry

Manh Thuong Nguyen

Disclosed herein is a method and system for COremoval from a gas stream using a diamine solvent having a Formula IR(R)N-L-NH—R   Formula I.With respect to Formula I, each of Rand Rindependently is aliphatic, cycloaliphatic, or Rand Rtogether with the nitrogen to which they are attached, form a heterocyclyl ring; Lis aliphatic, cycloaliphatic, or Land Rtogether with the nitrogen to which they are attached form a heterocyclyl ring; and Ris aliphatic, cycloaliphatic, cycloalkylalkyl, or alkoxyalkyl. And/or the compound may have a viscosity of less than 75 cP at a CO-loading of 40 mol % and at a temperature of 40° C.

Diamine solvent system for COcapture

Disclosed herein is a method and system for COremoval from a gas stream using a diamine solvent having a Formula IR(R)N-L-NH&#x2014;R&#x2003;&#x2003;Formula I.With respect to Formula I, each of Rand Rindependently is aliphatic, cycloaliphatic, or Rand Rtogether with the nitrogen to which they are attached, form a heterocyclyl ring; Lis aliphatic, cycloaliphatic, or Land Rtogether with the nitrogen to which they are attached form a heterocyclyl ring; and Ris aliphatic, cycloaliphatic, cycloalkylalkyl, or alkoxyalkyl. And/or the compound may have a viscosity of less than 75 cP at a CO-loading of 40 mol % and at a temperature of 40&#xb0; C.

Disclosed herein is a method and system for COremoval from a gas stream using a diamine solvent having a Formula IR(R)N-L-NH-R&#x2003;&#x2003;(I)With respect to Formula I, each of Rand Rindependently is aliphatic, cycloaliphatic, or Rand Rtogether with the nitrogen to which they are attached, form a heterocyclyl ring; Lis aliphatic, cycloaliphatic, or Land Rtogether with the nitrogen to which they are attached form a heterocyclyl ring; and Ris aliphatic, cycloaliphatic, cycloalkylalkyl, or alkoxyalkyl. And/or the compound may have a viscosity of less than 75 cP at a CO-loading of 40 mol % and at a temperature of 40&#xb0; C.

A class of water lean, organic solvents that can bind with various acid gasses to form acid gas bound molecules having a high degree of intramolecular hydrogen bonding which enables their use as regenerable solvents for acid gas capture. Unlike the other devices described in the prior art, the present invention takes advantage of shortened distances between the portions of the molecule that form hydrogen bonds within the structures when loaded with an acid gas so as to create a molecule with a higher internal bonding affinity and a reduced proclivity for agglomeration with other molecules.

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Reno, NV, United States of America

David C Cantu