DE3546261A1

DE3546261A1 - Reduction of ores, with simultaneous gas generation

Info

Publication number: DE3546261A1
Application number: DE19853546261
Authority: DE
Inventors: Artur Richard Greul
Original assignee: Individual
Current assignee: Individual
Priority date: 1985-12-28
Filing date: 1985-12-28
Publication date: 1987-07-02

Abstract

A process in which biomass in the form of small particles is rendered thermoplastic by steaming, mixed with added finely granular ores, briquetted, and subsequently gasified or coked, whereby the ore can be reduced and a fuel gas or synthesis gas generated.

Description

Die Erfindung hat die Reduktion von Erzen bei gleichzeitiger Gaserzeugung mit verholzter, kleinstückiger Biomassen lufttrocken, die Zellulose und Lignin enthalten, wie z. B. Holz, Strohs, Bagasse etc. und welche durch überhitzten Dampf gedämpft werden zum Ziel.The invention has the reduction of ores at the same time Gas production with woody, small pieces Air-dry biomass containing cellulose and lignin, such as B. wood, straws, bagasse etc. and what to be steamed by overheated steam to the goal.

In der schweizr Patentschrift 2 46 214 wird ein Verfahren beschrieben, in welchem verholzte Massen durch überhitzten Dampf zur plastischen Masse wird, um es als Bindemittel einzusetzen, so z. B. um Brennstoffe wie Müll, Kohle, Grudekoks zu Briketts zu verpressen, wobei gute Ver- Brennungs-Pyrolyse- sowie Vergasungseigenschaften der Briketts festgestellt wurden.A method is described in Swiss patent specification 2 46 214 described in which woody masses by overheating Steam becomes a plastic mass to it as a binder use so z. B. fuels such as garbage, coal, Grudekoks to press briquettes, whereby good Firing pyrolysis and gasification properties of the Briquettes were found.

In er DOS 28 02 212 wird ein Verfahren beschrieben, in welchem bertinisiertes Holz im Drehrohr zur Reduktion von FE-Erzen eingesetzt wird.In DOS 28 02 212 a method is described in which Bertinized wood in the rotary tube to reduce FE ores is used.

In der DOS 29 35 544 wird ein Verfahren beschrieben, bei welchem Holz oder andere Biomassen zur Reduktion von FE-Erzen eingesetzt wird.DOS 29 35 544 describes a method in which Wood or other biomass to reduce FE ores is used.

In DP 35 18 053 wird gleichfalls ein Verfahren zur Erz-Reduktion mit Biomassen beschrieben.DP 35 18 053 also describes a process for ore reduction described with biomass.

Der Erfindung liegt die Aufgabe zu Grunde mit verholzten kleinstückigen Biomassen lufttrocken, welche Zellulose und Lignin enthaltenden Erze zu reduzieren und gleichzeitig ein Brenn- bzw. Synthesegas zu erzeugen.The invention is based on the task with woody small piece of biomass air dry, which cellulose and Reduce ores containing lignin and at the same time To produce fuel or synthesis gas.

Die Lösung dieser Aufgabe besteht darin, daß thermoplastische Biomassen feinkörnige Erze zugegeben, gut vermischt, anschliessend brikettiertThe solution to this problem is that thermoplastic Biomass fine-grained ores added, well mixed, then briquetted

a) are gasified in a gasification generator in cocurrent or countercurrent with known gasification agents such as air, oxygen, water vapor, CO 2 or mixtures thereof at temperatures between 800-900 ° and then the reduced metals, in the case of iron, by suitable measures e.g. B. sponge iron is secreted into a suitable form for transport, storage and processing.
b) are known to be charred, which can precede a Bertinization at 250 °, and the a further pyrolytic heating to 700 ° C follows, which to partial coking and from 280 ° C, when the exothermic reactor reactions, leads to reduction and this wood coke-metal briquettes thus obtained can be directly preferred without cooling a metal melt, with iron an iron bath with or without gas generation in a melting furnace are fed.

Es wird ein Verfahren beschrieben, bei welchem kleinstückige Biomassen durch Dämpfung thermoplastisch und mit zugegebenen, feinkörnigen Erzen vermischt, brikettiert anschließend vergast oder verkokt wird, wobei das Erz reduziert und ein Brenn- oder Synthesegas erzeugt werden kann.A method is described in which small pieces Biomass through damping thermoplastic and mixed with fine-grained ores, briquetted is then gasified or coked, whereby the ore is reduced and a fuel or synthesis gas can be generated.

Claims

1) Reduction of ores, with simultaneous gas generation with woody, small-scale biomass air-dry, which contain cellulose and lignin, such as. As wood, straw, bagasse etc., and which are steamed by superheated steam, characterized in that fine-grained ores are added to these thermoplastic biomasses, mixed well, then briquetted

a) are gasified in a gasification generator in cocurrent, crossflow or countercurrent with known gasification agents such as air, oxygen, water vapor, CO ₂ or mixtures thereof at temperatures between 800-900 ° and the reduced metals are then removed from the ashes by suitable measures, in the case of iron e.g. B. sponge iron, separated and brought into a suitable form for transport, storage and processing.
b) are subjected to charring in a known manner, which can be preceded by Bertinization at 250 ° and which is followed by further pyrolytic heating to 700 ° C, which leads to partial coking and from approx. 280 ° C, when the exothermic reactor is used Reduction leads and the wood coke-metal briquettes thus obtained can be fed directly preferably without cooling a metal melt, in the case of iron to an iron bath with or without gas generation or processing in a melting furnace.

2) Method according to claim 1) characterized in that for briquetting also binders can be used.