US 11,986,754 B2
Controlling degradation in a reboiler via higher surface roughness
Hasan M. Alshafei, Saihat (SA)
Assigned to SAUDI ARABIAN OIL COMPANY, Dhahran (SA)
Filed by SAUDI ARABIAN OIL COMPANY, Dhahran (SA)
Filed on Mar. 16, 2022, as Appl. No. 17/655,059.
Prior Publication US 2023/0294015 A1, Sep. 21, 2023
Int. Cl. B01D 3/32 (2006.01); B01D 3/26 (2006.01); B01D 53/14 (2006.01)
CPC B01D 3/322 (2013.01) [B01D 3/26 (2013.01); B01D 53/1425 (2013.01); B01D 53/1493 (2013.01); B01D 2252/103 (2013.01); B01D 2252/20478 (2013.01)] 11 Claims
OG exemplary drawing
 
1. An alkanolamine gas treatment unit system, comprising:
an absorber column;
a regenerator column;
a once-through natural circulation vertical thermosyphon reboiler comprising a reboiler tube and a shell; and
an alkanolamine solution, wherein the alkanolamine solution includes an alkanolamine and water, wherein the alkanolamine is diglycolamine (DGA);
wherein the reboiler is steam driven having a process side and a shell side,
wherein the process side is inside the reboiler tube,
wherein the process side of the reboiler and the regenerator column are in fluid communication with one another,
wherein an inner surface of the reboiler tube, on the process side, has a surface roughness of 0.06 μm-3.0 μm,
wherein the shell side of the reboiler is in fluid communication to a steam source, and
wherein the regenerator column and the absorber column are in fluid communication with one another.