Selection of blast discs for the gas generation section
Thread Content
This post was last edited by ZZJJAA70 on 2009-11-17 09:44. I have a question: What is the location of the blast disc in the gas generation unit, as well as its specifications and material? In our factory, blast valves are installed on the downward coal gas pipelines and the main air pipelines. However, I have also seen that in some other factories they are placed on both the coal gas pipelines and the main purge air pipelines. What do you all think about this? Where exactly needs to it be installed? We also manufacture the rupture discs ourselves; they are made by clamping 2mm thick aluminum sheet between two flanges, with a support inside the aluminum sheet to prevent it from flapping back and forth. I would like to ask everyone: what are the shapes of the rupture discs used in intermittent gas generation that you have seen?
There are basically these two installation locations. Here, we have added another layer of asbestos board inside the aluminum sheet to serve as a sealant.
Cheap. There’s no need to think about so many things.
The explosion-proof panel in our unit is located on the combustion furnace. It’s made of tin. It’s just rebar protection added on the outside to prevent people from being injured in case of an explosion. Due to the unstable coal quality, this panel exploded multiple times. It provided protection.
Our burst disc is installed on the duct at the junction of the air duct and the downward duct; it uses aluminum sheet and asbestos gaskets, along with a protective cover. By the way, what is the pressure control target for those fixed-bed gas stoves of yours? Is 2mm of aluminum sheet too thick? Has the blasting strength been calculated?
Our installation locations are similar to those of the original poster’s – mainly on the main ducts at the fan outlets, as well as on the air inlet and downward ducts of each furnace. However, I would like to remind the original poster that, in accordance with safety regulations, it is necessary to carefully calculate the thickness of the explosion-proof panels before using them. Some companies opt for a conservative approach, which does not ensure sufficient safety; on the other hand, too thin panels tend to get damaged frequently, disrupting production. In my opinion, it is better to adopt a scientific and evidence-based approach to ensure both safety and smooth operation of production.