The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 30, 1982
Filed:
Sep. 03, 1980
Allan Sass, Los Angeles, CA (US);
Occidental Petroleum Corporation, Los Angeles, CA (US);
Abstract
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.