METHOD AND DEVICE FOR OBTAINING NITROGENOUS FERTILISERS FROM ORGANIC WASTE PRODUCTS

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 ini...

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Bibliographische Detailangaben
Hauptverfasser:	BAUERMEISTER, UTE, TESKE, MICHAEL, MEIER, THOMAS, SPINDLER, HERBERT
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	AMMONIA CHEMISTRY COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM,CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THERARE-EARTH METALS COMPOUNDS THEREOF CYANOGEN FERTILISERS FERTILISERS PRODUCING CARBON DIOXIDE INORGANIC CHEMISTRY INORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C MANUFACTURE THEREOF METALLURGY NITROGENOUS FERTILISERS ORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C, e.g. FERTILISERS FROM WASTE OR REFUSE TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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Beschreibung
Zusammenfassung:	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.