Verfahren zum pneumatischen und dosierten Einblasen feinkörniger Feststoffe in einen unter veränderlichem Druck stehenden Behälter

The method consists in forming in a single metering device a pneumatic mixture comprising the pulverulent material and propellant gas for propelling this mixture through a common primary conduit (18) into a distributor (20) in which the mixture is divided into secondary streams which are conveyed re...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	SCHMIT, LOUIS, L-1451 LUXEMBOURG, LU, KROEMMER, YVON, L-8360 GOETZINGEN, LU, ULVELING, LEON, L-2319 HOWALD, LU
Format:	Patent
Sprache:	ger
Schlagworte:	BLASTING CHEMISTRY COMBUSTION APPARATUS COMBUSTION PROCESSES CONVEYING FEEDING FUEL TO COMBUSTION APPARATUS HANDLING THIN OR FILAMENTARY MATERIAL HEATING LIGHTING MANUFACTURE OF IRON OR STEEL MECHANICAL ENGINEERING METALLURGY METALLURGY OF IRON MIXING, e.g. DISSOLVING, EMULSIFYING, DISPERSING PACKING PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL PNEUMATIC TUBE CONVEYORS PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OFWROUGHT-IRON OR STEEL SHOP CONVEYOR SYSTEMS STORING TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING ORTIPPING TRANSPORTING TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS WEAPONS
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Beschreibung
Zusammenfassung:	The method consists in forming in a single metering device a pneumatic mixture comprising the pulverulent material and propellant gas for propelling this mixture through a common primary conduit (18) into a distributor (20) in which the mixture is divided into secondary streams which are conveyed respectively to each of the injection points through secondary conduits (221, 222, ... 22n), determining the flow rate in each of the secondary conduits (221, 222, ... 22n) using tuyere flow sections (281, 282, ... 28n) and influencing the conditions of transport in each secondary conduit (221, 222, ... 22n) by modifying the pressure P3 downstream of each tuyere (281, 282, ... 28n) in order to maintain this pressure at a determined value. The process is aimed more particularly at the injection of powdered coal into a blast furnace.