What is the difference between a lump coal stove grate and a special grate for coal sticks?
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Is there any fundamental difference between the grates used in batch gas generators, lump coal grates, and those designed specifically for coal sticks? During the production process, could there be any specific problems arising from mixing?
I haven’t worked with such instances, but it’s conceivable that the distribution ability of the vaporizer and its slag-breaking capacity must be the key parameters
Due to manual screening, the particle size of lump coal cannot be very uniform. Briquette particles have a uniform size (I have used coal sticks and coal balls), which is more favorable for air distribution. Based on practical experience, using briquettes with the same grate makes it less likely for damage to occur. Due to their slightly lower mechanical and thermal strength, briquettes are more prone to breaking inside the shaft furnace. During operation, the ash layer of briquettes can be made thicker, and their saturation level is also slightly higher than that of lump coal. The gas generation calorific value of briquetted coal is slightly higher. In my opinion, a stove grate that can burn coal can also burn briquettes. What was said on the 2nd floor is correct; there are differences in the slag-breaking capacity. If uneven ash discharge or localized sparking is observed during use, it is more likely that there is a problem with the ash removal system. The outlet openings of the grates come in three configurations: below the grate, facing outward from the side of the grate, and on top of the grate (the first two types have been used by me). In the case of intermittent gas supply with a standby furnace, it is advisable to use a design in which the air outlet is located below the furnace grates, as the briquettes become very fine at the ash stage, and this fine ash can easily block the air inlets when the furnace is in standby mode.
This post was last edited by LIU9541 on 2009-6-9 21:01. The differences are minimal; it’s just that the manufacturers of the grates have different selling points. I haven’t compared the grates for lump coal stoves with those designed for coal sticks, but I have compared the grates for lump coal stoves with those intended for coal of a specific particle size, and they are basically the same. I use them interchangeably now, and there’s no difference.
Our factory uses grates that burn lump coal to burn coal sticks as well, and the results are fairly good; mainly, some adjustments are needed in terms of the parameters.