Technical Monograph |
Tangshan Kewei Industrial Control Technology Co.,Ltd. |
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Cold Operation |
Author:admin Date:2015-06-24
Views:630 |
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Cold furnace operation means the occurrence of furnace material layer is cold, this phenomenon and hot running condition
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also different place, sometimes running hot heat cold outside (refer to the fire layer temperature is high, while the
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surface temperature is not high ), the material layer is sometimes high temperature, and cold temperature operation is
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the lower material layer. Cold running gas furnace, the furnace from the fire detection observed black hole is slightly
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red, drill exploration oxide layer simply undetectable or insignificant. Carbon monoxide and hydrogen gas in the test
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concentrations are low, and high moisture content.Saturation produce cold temperature operation causes excessive due
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to the saturation vapor into the bottom to the oxidation layer, the oxide layer the temperature drop, and the amount
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of carbon dioxide is low, not enough to restore the temperature of the reaction, water vapor can not be decomposed
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in the oxide layer, much less and carbon synthesis reaction. To the high content of carbon dioxide gas, carbon monoxide
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content is low, moisture content and more. Because low temperature oxide layer, not a lot of coal gasification,
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gasification of char no more than about 20%, some up to 30% waste is amazing. In the cold runs, the first oxide layer
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temperature is too low, reflecting not severe oxidation, reduction reaction also will then be weakened, at this time is
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often at the seams thicker, but also absorb a lot of heat, leading to the gas temperature furnace decline. Word cooling
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operation is the final analysis, is not to achieve complete gasification, so the result is that the gas cooling operation
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is the quality (calorific value) decrease. Run cold will cause some serious fire zone layer temperature gradually decreased,
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and finally reach some areas completely unable to play oxidation layer flame fire until some results.
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