FIELD: industrial power engineering; chemical technology; production of synthetic ammonia.
SUBSTANCE: proposed method includes delivery of natural gas and vapor to tubular furnaces of first stage of vapor reforming at definite ratio and maintenance of temperature at vapor-and-gas mixture outlet near 830 C , delivery of air to second stage of methane conversion in shaft reactor till ratio of hydrogen to nitrogen reaches 3:1 at maintenance of converted gas outlet temperature within 980-990 C, cleaning converted gas from carbon dioxide, compression of nitrogen-and-hydrogen mixture and synthesis of ammonia; vapor-to-carbon ratio is set within 2.8:1; amount of air to second stage is reduced and nitrogen is replenished after stage of cleaning gas from carbon dioxide.
EFFECT: reduced consumption of thermal energy; reduced capital outlays for equipment.
1 dwg
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