Synthesis Gas Demonstration Plant Program, Phase I. Trade-off study report II: gas purification alternatives
Gas purification must be carried out in two stages for economic and technical reasons. The requirements of the first stage can be met by a Rectisol plant by Lotepro/Linde AG, or by a Selexol unit by Air Products/Allied Chemical. The second stage in either case should be a Nitrogen Wash unit. The Rectisol solvent (methanol) is freely available worldwide. Selexol solvent is obtainable only from single sources in the USA and in Germany, but serious supply problems are not anticipated. Selexol solvent is relatively non-toxic, non-volatile and non-flammable. Although methanol is classified as toxic and flammable, these potential hazards are controlled to acceptable levels of safety by application of standard methods for plant design and operational handling. The alternative gas purification systems have almost identical installed plant cost, but the operating cost of the Selexol system is substantially higher than that for the Rectisol version. This difference is large compared to any advantages of the Selexol process enumerated above. It is recommended that the Rectisol plant offered by Lotepro/Linde AG, plus a Nitrogen Wash unit, should be specified for the Commercial and Demonstration Plant. Before any such plant is ordered the process requirements (particularly concerning effluents) should be defined as exactly as possible.
- Research Organization:
- Grace (W.R.) and Co., Memphis, TN (USA)
- DOE Contract Number:
- AC02-77ET13402
- OSTI ID:
- 5360846
- Report Number(s):
- DOE/ET/13402-T25
- Country of Publication:
- United States
- Language:
- English
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RECTISOL PROCESS
COMPARATIVE EVALUATIONS
SELEXOL PROCESS
SYNTHESIS GAS
PURIFICATION
TEXACO GASIFICATION PROCESS
COAL GASIFICATION
DEMONSTRATION PLANTS
FLUIDS
GASES
GASIFICATION
THERMOCHEMICAL PROCESSES
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