100 get burner to burn caustic reason and countermeasure
By ShangHai HT 2020-06-08 09:51:56
On the high side of temperature of 1 the chamber of a stove or furnace
On the high side of temperature of center of blaze of the chamber of a stove or furnace, flue gas of high temperature of the chamber of a stove or furnace increases to the radiation heat exchange of burner, bring about heighten of temperature of face of burner spout cliff. This is a cause that causes burner to burn caustic.
Center of blaze of 2 the chamber of a stove or furnace is deflective
Burner heats up state test result to make clear: Distributing from the temperature of the temperature of the chamber of a stove or furnace that measures quadrilateral and burner spout apparent not all. Center of blaze of the chamber of a stove or furnace is deflective, also can bring about burner to burn caustic. From wind result of measure of tubal wind speed looks, with the layer quadrilateral the wind spout wind speed of burner is apparent not all, each spout wind speed all is worth under the design. Be the same as a layer error of wind spout wind speed is big, it is to cause a cause with deflective center of blaze of the chamber of a stove or furnace. Wind speed deviation reachs wind speed on the low side to be able to cause the damage of burner spout greatly.
The reason of respect of 3 moving control
3.1 coal fines catch fire interval is too close
3.2 too small conference causes wind speed coal fines catchs fire interval is too close. In move, pilot wind total wind pressure is too low, cause possibly catch fire interval is too close, till damage,the overheat that causes burner spout thereby is out of shape.
Wind speed of 2 3.3 wind is too low also can cause catch fire interval is too close, cause the damage of burner spout.
3.4 coal are planted metabolic influence
Coal qualitative change is nice, volatilize after the portion progresses, the coal fines of wind spout catchs fire interval becomes close, moving employee fails to had adjusted wind and 2 wind in time, in order to get used to the change that coal plants.
3.5 fineness are too fine
From the coal of two months qualitative analysis report looks, the power plant runs what coal plants to be able to be lighted base volatilize the portion is in 15 ～ 23, grey portion is in 25 the left and right sides, r90zj of corresponding control fineness should be 14.5 ～ 21, and R90 of moving pilot fineness is 12 the left and right sides, the coal fines that causes wind spout catchs fire interval is too close, till damage,the overheat that causes burner spout thereby is out of shape.
The superstratum when 3.6 small negative charge move wind spout is cooling and insufficient
When small negative charge moves, did not throw used wind spray head, be in almost dry burn condition, cannot get enough refrigeration, the overheat that causes burner thereby, till damage,be out of shape.
4. Burner designs the matter of the respect
4.1 material qualitative respect
The alloy rolled steel that burner chooses expects, cannot satisfy caustic of wear-resisting of the burner when boiler moves normally, high temperature resistant requirement.
4.2 structures respect
Coal fines condenses, the spout structure design of warm-up burner is not quite perfect, in spout place generation intense hot circumfluence causes spout temperature exorbitant, make spout overheat is out of shape, attaint.
