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

Abstract

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.

Inventors:
; ;
Publication Date:
Research Org.:
COATES ENGINEERING, LLC, Salt Lake City, UT (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1258019
Patent Number(s):
9,371,486
Application Number:
13/565,664
Assignee:
COATES ENGINEERING, LLC (Salt Lake City, UT) CHO
DOE Contract Number:
FG02-08ER84951
Resource Type:
Patent
Resource Relation:
Patent File Date: 2012 Aug 02
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

Citation Formats

Coates, Ralph L, Smoot, Douglas L., and Hatfield, Kent E. Method and apparatus for maximizing throughput of indirectly heated rotary kilns. United States: N. p., 2016. Web.
Coates, Ralph L, Smoot, Douglas L., & Hatfield, Kent E. Method and apparatus for maximizing throughput of indirectly heated rotary kilns. United States.
Coates, Ralph L, Smoot, Douglas L., and Hatfield, Kent E. Tue . "Method and apparatus for maximizing throughput of indirectly heated rotary kilns". United States. doi:. https://www.osti.gov/servlets/purl/1258019.
@article{osti_1258019,
title = {Method and apparatus for maximizing throughput of indirectly heated rotary kilns},
author = {Coates, Ralph L and Smoot, Douglas L. and Hatfield, Kent E},
abstractNote = {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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Jun 21 00:00:00 EDT 2016},
month = {Tue Jun 21 00:00:00 EDT 2016}
}

Patent:

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