Method and Device for the Entrained Flow Gasification of Solid Fuels under Pressure

Simple SummaryContent extracted from patent full text and abstract with AI.

This invention describes a method and device for the efficient gasification of solid fuels (such as coal, petcoke, or biomass) under pressure without the use of traditional burners. The process introduces oxygen-containing gasification agents in two stages into a downward-flowing, dust-like fuel stream, forming two reaction chambers. The first chamber achieves partial gasification at over 600°C and limited carbon conversion, while the second chamber completes gasification at higher temperatures, generating synthesis gas. The system allows ash removal either as dry solids or melted slag, and simplifies reactor design by eliminating conventional burner complexity.

Use CasesContent extracted from patent full text and abstract with AI.

• Production of synthesis gas (syngas) for use in chemicals or fuels manufacturing (e.g., methanol, ammonia, Fischer-Tropsch fuels)
• Hydrogen generation via gasification for fuel cells and clean energy applications
• Waste-to-energy recovery from biomass or waste-derived solid fuels
• Integrated gasification combined cycle (IGCC) power plants for electricity generation
• Industrial applications requiring high-purity synthesis gas for further chemical processing
• Coal gasification for cleaner energy production in industries looking to reduce emissions

BenefitsContent extracted from patent full text and abstract with AI.

• Eliminates the need for complex and failure-prone burners, reducing maintenance and increasing operational reliability
• Enables gasification under high pressures (up to 100 bar) which improves process efficiency and syngas yield
• Handles a wider variety of fuels and particle sizes, broadening the feedstock options
• Allows more flexible and simplified reactor construction, reducing investment and operating costs
• Increases safety through inherent process design and elimination of burner hazards
• Improves carbon conversion efficiency and provides flexible ash handling (either dry or as slag)
• Reduces system complexity and energy losses, enhancing overall process economics

Technical Classifications (CPCs)

Inventors & Applicants

Patent Abstract

The invention relates to a method and a device for the entrained flow gasification of solid fuels under pressure characterised in that first and second oxygen-containing gasification means are supplied from above to a burnerless, dust-forming gasification material stream in at least two stages such that a first, upper gasification chamber and subsequent second, lower gasification chamber are formed. Through the addition of the first gasification means, measured according to quantity and composition, partial gasification of the gasification materials is performed, wherein temperatures in the first, upper gasification chamber, which are greater than 600°C, are adjusted. In addition, the carbon conversion of the first gasification products is limited to 80% based on the carbon input of the gasification materials. Through the addition of the second gasification means, measured according to quantity and composition, temperatures in the second gasification chamber are adjusted to a level that is high enough that largely complete gasification takes place and the desired compositions of the raw synthesis gases of the second gasification process are obtained. In the process, the discharge of ash in dry form and/or in the form of a melted slag is possible.