Process for Conversion of Bis(hydroxyethylethoxy)-urea to DGA
A reclaimer system and methods for using said reclaimer system to reclaim one or more amine agents from a fluid containing one or more degradation products that have been formed from the reaction of one or more acid gas components with the one or more amine agents.
1 . A method for reclaiming one or more amine agents, the method comprising:
controlling a temperature of a fluid in a reclaimer vessel by allowing a fixed amount of a vapor output stream to exit the reclaimer vessel while allowing pressure within the reclaimer vessel to vary,
wherein the fluid comprises one or more degradation products that have been formed from reaction of one or more amine agents with one or more acid gas components and the vapor output stream comprises one or more amine agents.
2 . The method of claim 1 , wherein at least one of the one or more degradation products of the fluid is bis(hydroxyethylethoxy)-urea (BHEEU).
3 . The method of claim 1 , wherein the one or more amine agents are selected from the group consisting of: 2-2-aminoethoxyethanol, monoethanolamine (MEA), diethanolamine (DEA), diisopropanolamine (DIPA), triethanolamine (TEA), methyldiethanolamine (MDEA), 2-amino-2-methyl-1-propanol (AMP), piperazine (PZ), and combinations thereof.
4 . The method of claim 1 , wherein the one or more acid gas components are selected from the group consisting of: carbon dioxide (CO 2 ), carbonyl sulfide (COS), carbon monoxide (CO), hydrogen sulfide (H 2 S), carbon disulfide (CS 2 ), and combinations thereof.
5 . The method of claim 4 , wherein the vapor output stream further comprises carbon dioxide (CO 2 ).
6 . The method of claim 1 , wherein the temperature of the fluid is maintained between about 355° F. to about 385° F.
7 . A system for reclaiming one or more amine agents, the system comprising:
a reclaimer vessel comprising a fluid, wherein the fluid comprises one or more degradation products formed by a reaction of one or more amine agents with one or more acid gas components;
a steam input subsystem for providing energy into the fluid in the reclaimer vessel;
a fluid input subsystem for controlling a rate at which the fluid enters the reclaimer vessel;
a level control subsystem for controlling a level of fluid within the reclaimer vessel; and
a vapor outlet subsystem for controlling an amount of a vapor exiting the reclaimer vessel,
wherein a temperature of the fluid within the reclaimer vessel is maintained by fixing the amount of the vapor exiting the reclaimer vessel.
8 . The system of claim 7 , wherein the amount of the vapor exiting the reclaimer vessel is fixed during an operational cycle.
9 . The system of claim 7 , wherein the temperature of the fluid in the reclaimer vessel is maintained between about 355° F. to about 385° F.
10 . The system of claim 7 , wherein a pressure within the reclaimer vessel varies.
11 . The system of claim 7 , wherein the one or more degradation products are generated by the reaction of the one or amine agents and the one or more acid gas components.
12 . The system of claim 7 , wherein at least one of the one or more degradation products of the fluid is bis(hydroxyethylethoxy)-urea (BHEEU).
13 . The system of claim 7 , wherein the one or more amine agents are selected from the group consisting of: 2-2-aminoethoxyethanol, monoethanolamine (MEA), diethanolamine (DEA), diisopropanolamine (DIPA), triethanolamine (TEA), methyldiethanolamine (MDEA), 2-amino-2-methyl-1-propanol (AMP), piperazine (PZ), and combinations thereof.
14 . The system of claim 7 , wherein the one or more acid gas components are selected from the group consisting of: carbon dioxide (CO 2 ), carbonyl sulfide (COS), carbon monoxide (CO), hydrogen sulfide (H 2 S), carbon disulfide (CS 2 ), and combinations thereof.
15 . The system of claim 14 , wherein the vapor output stream further comprises carbon dioxide (CO 2 ).