US 11,806,662 B2
Gas dehydration
Runyu Tan, Pearland, TX (US); and Reba S. Georgetown, Manvel, TX (US)
Assigned to Dow Global Technologies LLC, Midland, MI (US)
Appl. No. 17/286,969
Filed by Dow Global Technologies LLC, Midland, MI (US)
PCT Filed Oct. 22, 2019, PCT No. PCT/US2019/057369
§ 371(c)(1), (2) Date Apr. 20, 2021,
PCT Pub. No. WO2020/092055, PCT Pub. Date May 7, 2020.
Claims priority of provisional application 62/751,775, filed on Oct. 29, 2018.
Prior Publication US 2021/0387136 A1, Dec. 16, 2021
Int. Cl. B01D 53/28 (2006.01); B01D 53/14 (2006.01); B01D 53/26 (2006.01)
CPC B01D 53/28 (2013.01) [B01D 53/1493 (2013.01); B01D 53/263 (2013.01); B01D 2252/2023 (2013.01); B01D 2252/20494 (2013.01); B01D 2252/40 (2013.01); B01D 2252/606 (2013.01); B01D 2252/608 (2013.01)] 7 Claims
OG exemplary drawing
 
1. A gas dehydration drying agent solution composition, the composition comprising:
a solvent that includes at least one glycol having a number average molecular weight from 40 g/mol to 500 g/mol; and
from 0.01 wt % to 8.00 wt % of a cyclohexylamino sulfonic salt in a buffer solution having the following structure:

OG Complex Work Unit Chemistry
wherein n is from 1 to 6; wherein the buffer solution further includes at least one selected from the group of an alkali metal cation and an alkali-earth metal cation; wherein the solvent includes from 5 wt % to 95 wt % of the at least one glycol.