Natural Gas Processing Refinery Gas Processing Hydrogen Recovery Purge Gas Processing
		Monomer Recovery Ammonia Purge Gas Methanol Purge Gas   Monomer Recovery Currently, most of the reactor cycle purge and vent gases from ethylene consuming plants such as gas-phase polyethylene, EO/EG, etc. are flared because cryogenic processes are not sufficiently economical or flexible enough to recover contained monomers. By cost-effectively adapting the non-cryogenic, absorption-based AET Process technology to the reactor waste gas streams, the hydrogenated reactor byproducts are rejected to the fuel gas system, most all of the contained unreacted monomers are recovered, and the environmental emissions are substantially reduced. The patented Monomer Recovery Unit (MRU) technology is very adaptable to cope with the wide ranging stream compositions and rates typical of gas phase polyethylene units. In this innovative process, the heavier components that are present in the reactor waste gas streams are used as the preferred absorption solvent whereby no external solvent is required. Ammonia Purge Gas In ammonia plants, the reactor cycle purge gases contain desirable nitrogen and hydrogen feedstock components for the manufacture of ammonia. With the incorporation of a non-cryogenic, absorption-based AET Process Hydrogen Recovery Unit (HRU) technology, the ammonia plant purge streams can be processed to recover and produce a N2-H2 stream with very little pressure drop across the unit. The N2-H2 stream can be returned to the reactor. The Ammonia Purge Gas Unit (APGU) is similar to an AET Process HRU and it takes advantage of the fact that N2 and H2 tend to stay together and other contaminants can be extracted and sent to the fuel system. Methanol Purge Gas In methanol plants, the reactor cycle purge gases contain desirable hydrogen and carbon monoxide feedstock components for the manufacture of methanol. With the incorporation of a non-cryogenic, absorption-based AET Process Hydrogen Recovery Unit technology, the methanol plant purge streams can be processed to recover and produce a H2-CO stream with very little pressure drop across the unit. The H2-CO stream can be returned to the reactor. The Methanol Purge Gas Unit (MPGU) is similar to an AET Process HRU and it takes advantage of the fact that H2 and CO tend to stay together and other contaminants can be extracted and sent to the fuel system.
		[TECH]  [CONSULT]  [PAPERS]  [ABOUT]  Copyright © 2004 by Advanced Extraction Technologies, Inc. All rights reserved. Advanced Extraction Technologies, Inc.        2 Northpoint Drive, Suite 820 Houston, Texas 77060-3237 USA             Phone: (281) 447-0571 Facsimile: (281) 447-5601    E-mail: seekinfo@aet.com