Gasholder emissions reduction

[jtk921]

We have a large gasholder which stores recovered VCM, with water providing the seal. The annular space is open to the atmosphere and we wish to reduce emissions from the water/VCM mixture. We've tried ping-pong balls, but they tended to blow out of the space. Any other proven ideas? If we use an oil layer, it will have to resist VCM penetration.

 

[ecj213]

Might want to think about a swimming pool cover; not elegant but might work. There are also "ping pong ball" types of things that are shaped like dodecahedrons that fit together better than ping pong balls. They might help.

I haven't tried to seal VCM/H2O like this but I've used mineral oil in other applications. Cheap and you can use it for massage oil too.