GB8420644D0
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Ammonia synthesis gas
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GB8333628D0
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Recovery of carbon dioxide from gas mixtures
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CA1221617A
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Production of pure nitrogen
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GB8332077D0
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Separation of gases
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GB8327143D0
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Purification of helium
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GB8324447D0
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Improvements in the production of pure nitrogen
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ZA8302536B
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Separation of gas mixtures by partial condensation
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GB8304391D0
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Air separation plant
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GB2120374A
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Improvements in the production of nitrogen from air
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US4461634A
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Separation of gas mixtures by partial condensation
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GB2086028A
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Separation of gas mixtures by partial condensation
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GB2079857A
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Producing power from a cryogenic liquid
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EP0043212A1
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Producing power from a cryogenic liquid
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US4338108A
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Process for the recovery of argon
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GB2053878A
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Process for the recovery of argon
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GB2069119A
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Refrigeration process
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GB2050326A
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Recovery of hydrogen and ammonia from purge gas
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US4266957A
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Recovery of hydrogen and ammonia from purge gas
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GB2048448A
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Recovery of hydrogen from ammonia synthesis purge gas
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GB2039858A
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Treatment of ammonia synthesis purge gas
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