Method and Apparatus for Coal Pyrolysis

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This invention describes a method and device for coal pyrolysis using resistance heating. Moist raw coal is moved at a controlled speed and porosity through a heater equipped with electrically powered electrode rings, which dry the coal by applying heat directly through resistance. The device offers options for different configurations of cathode and anode rings with larger surfaces and uses an auger for horizontal mass transport at the heater output.

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• Industrial coal processing for producing coke or synthetic gases
• Upgrading of raw, moist coal in power plants or chemical industries
• Production of cleaner-burning solid fuels
• Integration into advanced energy systems for coal utilization
• Processing low-grade or wet coal deposits in mining operations

BenefitsContent extracted from patent full text and abstract with AI.

• Enables efficient, volume-based drying of moist coal
• Improves energy efficiency through direct resistance heating
• Allows better control over the coal’s speed and porosity during processing
• Reduces need for pre-drying and handling steps
• Adaptable electrode configurations optimize heat transfer for various coal types
• Supports continuous operation with mechanical mass transport (auger)

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Patent Abstract

Die Erfindung betrifft ein Verfahren und eine Vorrichtung zur Kohle-Pyrolyse mittels Widerstandserwärmung, wobei feuchte Rohkohle in einem Erhitzer mit einstellbarer Geschwindigkeit und Porosität an einer elektrisch gespeisten Elektrodenanordnung vorbeigeführt und dabei durch Widerstandserwärmung volumenbasiert getrocknet wird. Die Vorrichtung weist dazu wahlweise zuschaltbare, konzentrisch um eine Rotationsachse angeordnete Kathoden- und Anodenringe mit vergrößerter Oberfläche auf. Weiterhin ist ein Auger zum horizontalen Massetransport am Austrag des Erhitzers vorgesehen.