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Title: Method and apparatus for maximizing throughput of indirectly heated rotary kilns

An apparatus and method for achieving improved throughput capacity of indirectly heated rotary kilns used to produce pyrolysis products such as shale oils or coal oils that are susceptible to decomposition by high kiln wall temperatures is disclosed. High throughput is achieved by firing the kiln such that optimum wall temperatures are maintained beginning at the point where the materials enter the heating section of the kiln and extending to the point where the materials leave the heated section. Multiple high velocity burners are arranged such that combustion products directly impact on the area of the kiln wall covered internally by the solid material being heated. Firing rates for the burners are controlled to maintain optimum wall temperatures.
Authors:
; ;
Publication Date:
OSTI Identifier:
1258019
Report Number(s):
9,371,486
13/565,664
DOE Contract Number:
FG02-08ER84951
Resource Type:
Patent
Resource Relation:
Patent File Date: 2012 Aug 02
Research Org:
COATES ENGINEERING, LLC, Salt Lake City, UT (United States)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; 04 OIL SHALES AND TAR SANDS; 01 COAL, LIGNITE, AND PEAT