Parallel flow regenerative lime kiln and method for the operation thereof
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United States of America Patent
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Apr 21, 2015
Grant Date -
Sep 27, 2012
app pub date -
Sep 15, 2010
filing date -
Dec 15, 2009
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Abstract
The method according to the invention for operating a PFR lime kiln having at least two shafts, which each have a preheating zone, a combustion zone and a cooling zone, and an overflow channel which connects the two shafts, substantially comprises the following method steps:
- the two shafts are operated alternately as a combustion shaft and exhaust gas shaft,combustion air and fuel are supplied to the combustion shaft, a corresponding flame length being formed, andthe hot gases which are produced in the combustion shaft reach the exhaust gas shaft via the overflow channel,at least one parameter of the hot gases which is characteristic of the formation of the flame length being established by means of direct or indirect measurement in the region of the overflow channel and the ratio of fuel to combustion air being adjusted in accordance with this parameter in order to adjust a predetermined flame length.
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