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Production of nitrogen fertilizer from organic waste products, comprising heating waste product under reduced pressure to produce gas containing carbon dioxide and ammonia, and absorbing ammonia from gas
Production of nitrogen fertilizer from organic waste products, comprising heating waste product under reduced pressure to produce gas containing carbon dioxide and ammonia, and absorbing ammonia from gas
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机译:由有机废品生产氮肥,包括在减压下加热废品以生产含有二氧化碳和氨的气体,并从气体中吸收氨
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摘要
Nitrogen fertilizer is produced by heating waste product to 40-90[deg]C under reduced pressure to produce gas containing carbon dioxide and ammonia, cooling gas, contacting gas with aqueous absorbent, withdrawing resulting nitrogen fertilizer and recycling unabsorbed gas. The reduced pressure is initially generated by vacuum pump and then maintained autogenously during process. An independent claim is also included for an apparatus for carrying out the process, comprising a stripper vessel (1) for heating under reduced pressure, an absorption vessel (2), a heat accumulator (3) for heat exchange, a vacuum pump (4), a hot water pump (5), a circulating pump (6) and a stirrer (7). ACTIVITY : Fertilizer. No biological data given. MECHANISM OF ACTION : None given in the source material.
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