In vertical heating furnaces, when the heat load is less than 30 MW, does water drip from the burners during operation in winter?
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The natural gas consumption of the furnace is 100 Nm3/h； The oxygen content is around 4%, and the negative pressure is between -40 and -50 Pa ； The flame color is normal, etc ； The furnace is supplied with air naturally ； During winter operation, dripping occurs at the permanent light and the main burner ； Regular inspection of the natural gas liquid removal tank shows no liquid present ； The oxygen level in the furnace is being reduced slowly at present, but the effect is minimal ； As the weather cools down, a large amount of water appears ； I’m wondering if there are any good solutions?
The reason is that the furnace has a low load and thus a low temperature; the products of natural gas combustion are carbon dioxide, water, and heat. Due to the low temperature, the water vapor generated condenses into water droplets when it comes into contact with cold pipe walls and similar surfaces.
The reason is that the furnace has a low load and thus a low temperature; the products of natural gas combustion are carbon dioxide, water, and heat. Due to the low temperature, the water vapor generated condenses into water droplets when it comes into contact with cold pipe walls and similar surfaces.
All the reasons given are correct; the question is whether there are any good solutions. The stove drips water, and in winter, that water turns into ice when it falls on the floor； I was wondering if it would be feasible to add heat tracing at the air inlet?
I think we should check whether the natural gas fed into the system is cold, as well as whether the air is cold. After combustion, there is less heat exchange on the side of the furnace near the burner, which causes the water vapor generated by combustion to condense into water in the cold pipelines at the burner inlet. We could try to provide heating for the fuel gas and the air, but I believe it’s still necessary to promote flow in the dead zone behind, to see if that can solve the problem.
In the viewing ports of our hot blast stoves, we install purge ports to prevent the formation of condensate water. In some locations, there is no purge air available (our design includes interfaces for this purpose), and the condensate water has blocked the sight glasses.