Arrangement structure suitable for inverted pulverized coal boiler with ultra-high steam temperature steam parameters
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United States of America Patent
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Nov 8, 2016
Grant Date -
Sep 19, 2013
app pub date -
Nov 18, 2011
filing date -
Apr 11, 2011
priority date (Note) -
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Abstract
The disclosure provides an arrangement structure suitable for an inverted pulverized coal boiler with ultra-high steam temperature steam parameters, including a hearth, wherein the hearth is communicated with a middle uplink flue, and the top of the middle uplink flue is communicated with that of a tail downlink flue. In the structure, the hearth is connected with the middle uplink flue by a hearth outlet horizontal flue at the bottom, so that the high-temperature gas is drained to a low elevation and then flows upwards through the middle uplink flue; a final heating surface may be arranged at the low position of the hearth outlet horizontal flue and the middle uplink flue so as to reduce the length of the high-temperature steam pipeline between the final heating surface and the steam turbine, lower the manufacturing cost of the boiler as well as the frication and radiation loss of the pipe.
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