There are many learned furnace condition can be directly by the pin.
1. Double oxide layer (double fire) : the said fire layer is disorder, fire layer should be concentrated in a certain
period, due to the frequent excessive tong furnace, frequency of ash, slag, etc., will appear this kind of double oxide
layer, double oxide mingled with the reduction of middle layer, cause can't according to normal after the first oxidation
reduction process for gasification, reduction time, causing the deterioration of the gas quality.
2. Long oxide layer (layer long fire) : this shows that due to the saturation temperature with too little, the water vapor
and coke (coal has become a coke here) reaction is weak, cannot absorb heat in great quantities, cause oxidation layer after
the release of heat are not used to in a timely manner, the accumulation of heat is caused by the extension of oxidation
layer, long also does not favor the reduction reaction, oxidation layer also has an effect on gas quality, can use up to
correct the saturation temperature.
3. Short oxide layer (short fire) : this suggests that the saturation temperature is too big, like the foregoing, too much
water vapor absorption of heat, make oxide layer shorter, oxidation in gasification is fundamental, is provided to restore
after used in the process of quantity of heat, fire layer is too short, of course after gasification conditions have sent.
4. What (red) : fire fire layer at the top of the pin, said fire layer down, direct access to the furnace and furnace skirt,
damage to equipment.
5. No fire layer: there are two concepts, one is the pin shine red fire layer was not seen, many experienced to fire workers
will gently with the bottom of the rubber shoes from is that a brush fire layer normally, if there was a wisp of smoke, that
this part is the fire layer, low temperature, or a bit time too short stays in the furnace (traditionally called not to burn
the red).2 it is fire layer bottom, or fire layer down to drill cannot be plugged into parts, at this point to account by the
following circumstances, namely the ash tray water temperature is higher, supplement water quantity increase, even to the furnace
skirt combining with flange are burning through phenomenon.
Of the two kinds of phenomena of the solution is not the same.The former should be appropriate to reduce the
saturation temperature, while the latter should be from the lower speed of ash, and appropriately increase the saturation temperature.
6. High fire layer: at this time due to high fire layer location so that its reduction zone is very short, reduction of incomplete,
gas quality will drop, at this time you can see on the surface of the furnace temperature is very high, it is also one of the causes
of the high temperature furnace.
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