METHOD OF HUMIC ACIDS PREPARING

A process is described for producing humic acids by coal oxidation effected in the dry phase with oxygen or an oxygen-nitrogen mixture in a fluidized bed reactor using coal of up to 3 mm particle size and operating at a temperature of between 150 and 300 DEG C at a partial oxygen feed pressure of be...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	VINCHENTSO KALEMMA, VINCHENTSO PIKKOLO, RIKKARDO RAUSA
Format:	Patent
Sprache:	eng
Schlagworte:	ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE ORUNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY CHEMISTRY COMPOSITIONS BASED THEREON DERIVATIVES OF NATURAL MACROMOLECULAR COMPOUNDS DESTRUCTIVE DISTILLATION OF CARBONAGEOUS MATERIALS FORPRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS FIRELIGHTERS FUELS FUELS NOT OTHERWISE PROVIDED FOR LIQUEFIED PETROLEUM GAS LUBRICANTS METALLURGY NATURAL GAS ORGANIC MACROMOLECULAR COMPOUNDS PEAT PERFORMING OPERATIONS PETROLEUM, GAS OR COKE INDUSTRIES PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BYSUBCLASSES C10G, C10K TECHNICAL GASES CONTAINING CARBON MONOXIDE THEIR PREPARATION OR CHEMICAL WORKING-UP THEIR RELEVANT APPARATUS TRANSPORTING
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Beschreibung
Zusammenfassung:	A process is described for producing humic acids by coal oxidation effected in the dry phase with oxygen or an oxygen-nitrogen mixture in a fluidized bed reactor using coal of up to 3 mm particle size and operating at a temperature of between 150 and 300 DEG C at a partial oxygen feed pressure of between 0.7 and 5 ata, at a total pressure not exceeding 40 ata and for a contact time of between 30 and 600 minutes, characterised by recycling part of the exit gases from the reactor back to the reactor after cooling them to a temperature of between 50 and 100 DEG C.