Slagging gasifier

Patent · Tue Jul 20 04:00:00 EDT 1982

OSTI ID:6691636

Schulz, H

A slagging gasifier for the gasification of coal and organic waste materials is disclosed. The gasifier includes a vertical blast furnace having a hearth section at the bottom thereof. A slag tap hole is formed in hearth section and opens into a quenching vessel. A honeycomb structure is formed on the inner surface of said hearth section in the area surrounding said slag tap hole, and the inner wall of the hearth section. A plurality of tuyeres extend into the hearth section and feed the furnace with steam and oxygen so as to permit the oxidation of coal and organic waste materials fed into the furnace. As a result of the oxidation, gas and molten slag are formed in the furnace. The slag is collected in the hearth section and exits the hearth section via the tap hole. One or more conduits are provided for recycling (Either internally or externally) the gas exiting the top of the gasifier with the tars, oils, and particulates entrained therein to the partial combustion zone of the gasifier where the tars, oils and particulates are converted to noncondensible gases. A portion of the tar-free product gas is removed from an intermediate point in the gasifier below the pyrolysis and coking zone.

• Assignee: EDB-83-012105
• Patent Number(s): US 4340397
• OSTI ID: 6691636
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010404* -- Coal
Lignite
& Peat-- Gasification
010800 -- Coal
Lignite
& Peat-- Waste Management
09 BIOMASS FUELS
090122 -- Hydrocarbon Fuels-- Preparation from Wastes or Biomass-- (1976-1989)
BLAST FURNACES
CHEMICAL REACTIONS
COAL GASIFICATION
ELEMENTS
FURNACES
GASIFICATION
HONEYCOMB STRUCTURES
MANAGEMENT
MECHANICAL STRUCTURES
NONMETALS
ORGANIC WASTES
OXIDATION
OXYGEN
PROCESSING
SLAGGING PYROLYSIS PROCESS
SLAGS
STEAM
THERMOCHEMICAL PROCESSES
WASTE MANAGEMENT
WASTE PROCESSING
WASTES