Process for gasification of coal to maximize coal utilization and minimize quantity and ecological impact of waste products

Patent · Tue Apr 22 04:00:00 EST 1980

OSTI ID:5784148

Hempill, H G; Hurney, R E

Coarse, graded coal is fed to a pressurized relatively fixed bed, non-slagging gasifier from which crude gas is recovered. Fine coal is slurried in an aqueous mixture comprising the discharge from the relatively fixed bed gasifier. This discharge is composed of hydrocarbons, phenolic water and other liquids as major components and additional makeup water, if required. The slurry is then fed to a slagging, pressurized entrained flow gasifier from which additional crude gas is recovered. The two streams of gas are cleaned and then used to meet a variety of demands, including, but not limited to, gas turbine generation of electric power, manufacture of synthetic natural gas and manufacture of methanol.

• Assignee: Kaiser Engineers Inc
• Patent Number(s): US 4199327
• OSTI ID: 5784148
• 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
ALCOHOLS
COAL GASIFICATION
DISPERSIONS
ELEMENTS
FLUIDS
FUEL GAS
FUELS
GAS FUELS
GASES
GASIFICATION
HIGH BTU GAS
HYDROXY COMPOUNDS
LURGI PROCESS
MANAGEMENT
METHANOL
MIXTURES
NONMETALS
ORGANIC COMPOUNDS
OXYGEN
PROCESSING
PRODUCTION
SCRUBBING
SLURRIES
SUSPENSIONS
THERMOCHEMICAL PROCESSES
WASTE MANAGEMENT
WASTE PROCESSING
WASTE PRODUCT UTILIZATION