What is the impact of ramming production on naphthalene in the coal gas purification process?
Thread Content
Our factory originally used top-loading production method, and under this method the level of naphthalene in the gas could meet the specified standards! However, after switching to ramming production, the naphthalene level in the gas has remained above the limit. Could everyone help me analyze what the reason is? :dizzy: Our factory uses light tar washing for naphthalene removal, as well as a final cooling process to eliminate naphthalene! Could it be that the tar components change after ramming production, resulting in poor naphthalene removal efficiency using light tar?
Personally, I think the effect of naphthalene is actually one of all the effects resulting from the modification. It is recommended to check for any changes in the color of the mother liquor in the primary cooler, electrostatic precipitator, final cooling tower, saturator, and so on! After switching from top-loading to tamping, finer coal ash and dust will be carried by the gas to the chemical production areas and even to the gas users, which will affect the performance of various equipment (heat exchange, cooling, resistance, etc.)! What the original poster is referring to is very likely a derivative effect of the aforementioned reasons!
I’ll give you an idea: a top-mounted design, with the coal pellets in direct contact with the furnace wall; heat transfer mainly occurs through this direct contact； And during the mixing process, since there is a gap between the coal briquettes and the furnace walls, radiation heat is the main source of heat. I’ll stop at this; you figure out the rest by yourself:lol:lol:lol
Our factory is also working on coke ovens; our process doesn’t involve any equipment for removing naphthalene. The plants have been in operation for less than half a year now, and many of the electronic instruments are no longer accurate. Apart from issues related to the instruments themselves, I suspect that they are clogged with naphthalene. I would like to remove the naphthalene from them. I was wondering if anyone with experience in this area could offer some advice.