Circulating-type multi-layer furnace

Provided is a circulating-type multi-layer furnace, comprising a circulation unit (2) that feeds air to cause a bed material to circulate while burning sludge, and a post-combustion unit (3) that feeds air into pyrolysis gas from the circulation unit (2) causing thorough combustion, in which a first...

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Bibliographische Detailangaben
Hauptverfasser:	MIZUNO YOICHIRO, HATTORI SHUSAKU, TAKESHITA TOMOYUKI, INOUE MASANOBU
Format:	Patent
Sprache:	eng
Schlagworte:	AIR BLASTING CHEMISTRY CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATERTREATMENT OR WASTE MANAGEMENT COMBUSTION APPARATUS COMBUSTION PROCESSES CONSUMING WASTE PRODUCTS BY COMBUSTION CREMATION FURNACES GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS HEATING LIGHTING MECHANICAL ENGINEERING METALLURGY METHODSOR APPARATUS FOR COMBUSTION USING FLUID FUELOR SOLID FUEL SUSPENDED IN TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE WEAPONS
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Beschreibung
Zusammenfassung:	Provided is a circulating-type multi-layer furnace, comprising a circulation unit (2) that feeds air to cause a bed material to circulate while burning sludge, and a post-combustion unit (3) that feeds air into pyrolysis gas from the circulation unit (2) causing thorough combustion, in which a first control process is carried out for feeding air separately in prescribed proportions to the circulation unit (2) and the post-combustion unit (3) at the flow rate required for complete combustion of the quantity of sludge being input, wherein, if the flow rate of air being fed to the circulation unit (2) in the first control process is below the flow rate required to cause circulation of the bed material, a second control process is applied in place of the first control process so that, of the air with the flow rate necessary for complete combustion, air is fed to the circulation unit (2) at the minimum flow rate necessary to cause the bed material to circulate in the circulation unit (2) and the remaining air is fed to the post-combustion unit (3).