Process for the gasification of carbonaceous materials

Patent · Tue Mar 30 04:00:00 EST 1982

OSTI ID:5327556

Sass, A

Carbonaceous material is gasified in a first pyrolysis zone substantially in an absence of free oxygen by heating with a solid heating media. The carbonaceous material is conducted through the first pyrolysis zone in turbulent flow to provide for the rapid transfer of heat to effect the gasification. Gaseous products are recovered while char products are introduced into a second pyrolysis zone for additional gasification. The second pyrolysis zone is maintained substantially free of free oxygen. Gasification in the second pyrolysis zone is effected by the transfer of heat from a heating media to the char products produced in the first pyrolysis zone. Gaseous products from the second pyrolysis zone are recovered. The char products from the second pyrolysis zone can be heated to a temperature sufficient for use as a solid heating media. The gaseous product from the first pyrolysis zone, after separation from the char product, can be cooled to a lower temperature to condense a liquid product therefrom. Liquid products produced can be recycled to the pyrolysis zones to produce additional gaseous products. The gaseous product from the second pyrolysis zone can be used as a conveying gas for the carbonaceous feed, char products, and recycle char. A portion of the char product and the gaseous product can be converted to methane for the production of pipeline gas.

• Assignee: Occidental Petroleum Corp
• Patent Number(s): US 4322222
• OSTI ID: 5327556
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010404* -- Coal
Lignite
& Peat-- Gasification
ALKANES
CARBONACEOUS MATERIALS
CHEMICAL REACTIONS
COAL
CONCENTRATORS
CYCLONE SEPARATORS
DECOMPOSITION
ELEMENTS
ENERGY SOURCES
ENERGY TRANSFER
EQUIPMENT
FLUID FLOW
FLUIDS
FOSSIL FUELS
FUEL GAS
FUELS
GAS FUELS
GASES
GASIFICATION
HEAT TRANSFER
HEATING
HIGH BTU GAS
HYDROCARBONS
INERTIAL SEPARATORS
MATERIALS
METHANE
NONMETALS
ORGANIC COMPOUNDS
OXYGEN
POLLUTION CONTROL EQUIPMENT
PRODUCTION
PYROLYSIS
RECYCLING
SEPARATION EQUIPMENT
THERMOCHEMICAL PROCESSES
TURBULENT FLOW