Ammonia plant upgrading-multistage integrated chilling of process air compressor with ammonia compressor followed by air flow split and multistage air preheating to secondary ammonia reformer
First Claim
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1. An ammonia plant utilizing a new direct multistage chilling system in an ammonia plant air compression train of the ammonia plant to increase process air flow to a secondary reformer of the ammonia plant, the ammonia plant comprising:
- a. a new two stage suction air chiller in the ammonia plant air compression train that chills incoming process air by heat exchange with expanded high pressure ammonia from an ammonia compression system of the ammonia plant;
b. additional new two stage air chillers between air compressors of the ammonia plant air compression train, each new air chiller chilling incoming air by heat exchange with expanded high pressure ammonia from the ammonia compression system of the ammonia plant.
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Abstract
An ammonia plant system upgrade utilizing both a direct and indirect multistage chilling system in the ammonia plant air compression train to increase process air flow to the secondary ammonia reformer of an ammonia plant as well as upgrades to provide more pre-heating along with increased process air flow.
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Citations
4 Claims
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1. An ammonia plant utilizing a new direct multistage chilling system in an ammonia plant air compression train of the ammonia plant to increase process air flow to a secondary reformer of the ammonia plant, the ammonia plant comprising:
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a. a new two stage suction air chiller in the ammonia plant air compression train that chills incoming process air by heat exchange with expanded high pressure ammonia from an ammonia compression system of the ammonia plant; b. additional new two stage air chillers between air compressors of the ammonia plant air compression train, each new air chiller chilling incoming air by heat exchange with expanded high pressure ammonia from the ammonia compression system of the ammonia plant. - View Dependent Claims (2)
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3. A method for upgrading an ammonia plant utilizing a new direct multistage chilling system in an ammonia plant air compression train to increase process air flow to a secondary reformer of the ammonia plant, the method comprising the steps of:
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a. providing a new two stage suction air chiller in the ammonia plant air compression train for chilling incoming air by heat exchange with expanded high pressure ammonia from an ammonia compression system of the ammonia plant; b. providing additional new air chillers between each stage of air compressors of the air compression train of the ammonia plant for chilling a compressed incoming air to each of the stages of an air compressor by heat exchange with expanded high pressure ammonia from the ammonia compression system of the ammonia plant. - View Dependent Claims (4)
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Specification