The on-line removal of non-regenerable salts from amine solutions using the UCARSEP{reg_sign} Process
- Union Carbide Corp., Houston, TX (United States)
- Union Carbide Corp., Bound Brook, NJ (United States)
Amine unit contamination with non-regenerable salts, whether as a result of acid or inorganic salt incursion, or solvent degradation, is a common industry problem. In MEA systems this is usually addressed by the use of a reclaimer but this is not a practical solution for DEA, MDEA or formulated solvents. Similarly, the old approach of purging solvent is no longer economically or environmentally justifiable. Neutralization of amine salts with a strong base can significantly prolong the useful life of the amine solution but eventually some of the salt may have to be removed, especially if mechanical losses are low. Electrodialysis (ED) has recently been applied to this problem and has been found to overcome many of the disadvantages of vacuum distillation and ion exchange technologies, both of which have been used in recent years for solvent clean-up. Union Carbide adapted ED technology to the unique conditions encountered in an amine system and developed the UCARSEP{reg_sign} Process. A mobile UCARSEP{reg_sign} unit has been built to achieve on-line salt removal rates of 40 lbmol/day (about 3,300 lb/day). This has been successfully used to clean up UCARSOL{reg_sign} solvents as well as DEA. Case studies are presented and the relative merits of this and other clean-up options are discussed.
- OSTI ID:
- 124626
- Report Number(s):
- CONF-9503132-; TRN: IM9548%%216
- Resource Relation:
- Conference: 74. annual Gas Processors Association (GPA) meeting, San Antonio, TX (United States), 13-15 Mar 1995; Other Information: PBD: 1995; Related Information: Is Part Of Proceedings 74. annual convention Gas Processors Association, 1995; PB: 378 p.
- Country of Publication:
- United States
- Language:
- English
Similar Records
U.S. gas conditioning and processing plant survey results
Solubility of nitrous oxide in amine solutions