System and method for gasification of solid carbonaceous fuels

Patent · Tue May 31 04:00:00 EDT 1983

OSTI ID:5889172

Tucker, G H

A system is disclosed for the conversion of solid carbonaceous fuels to combustible gases having a high energy content. The system utilizes a two-stage reaction system where a particulate fuel is entrained in a high velocity, hot gas stream emanating from a fixed-bed char reactor, the particulate fuel delivered to a gasification reactor by the hot gas stream while being rapidly heated (Fast pyrolized). The gases produced are drawn a fixed distance through a bed of char at the bottom of the gasification reactor, after which they are withdrawn from the reactor and cooled. To promote methanation, the generated gases, after passing through the fixed bed of char in the gasification reactor , exit the reactor through a dip leg within the reactor filled with a catalyst which promotes methanation. Char from the gasification reactor is continuously removed and delivered to the fixed-bed char reactor where an oxygen-containing gas (Air or oxygen) and steam are injected into the bed of char to produce the hot gas stream used to entrain the incoming particulate solid fuel.

• Assignee: Everett Metal Products
• Patent Number(s): US 4385905
• OSTI ID: 5889172
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010404* -- Coal
Lignite
& Peat-- Gasification
09 BIOMASS FUELS
090122 -- Hydrocarbon Fuels-- Preparation from Wastes or Biomass-- (1976-1989)
BIOMASS
CARBONACEOUS MATERIALS
CHARS
CHEMICAL REACTIONS
COAL GASIFICATION
ENERGY SOURCES
FLUIDS
FUEL GAS
FUELS
GAS FUELS
GASES
GASIFICATION
MATERIALS
METHANATION
PRODUCTION
PYROLYSIS PRODUCTS
RENEWABLE ENERGY SOURCES
SOLID FUELS
THERMOCHEMICAL PROCESSES