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Hi guys, Does anyone know a method of measuring perlite compaction in an annular space that is under vacuum? Our road tanker fleet experiences perlite settling over time and we top up the perlite periodically but there is a risk of damage to the inner vessel if the perlite is allowed to compact...

Thanks mate some good advice there. We do have a bit of room for pressure rise so it should be OK. We use Norman filters in our centrifugal pumps so I might inquire about a 2 micron filter element through them. The tee filter shouldn't be a problem and I think we could rig up a reverse N2 purge...

cheers Ed that's a good idea. I would have to link it through the PLC somehow because it is an unmanned site but it is an option. What do you know about filter media for cryogenic fluid? I'm thinking of recirculating all the fluid in the vessel through a high flow/capacity filter. I'll have to...

thanks dcasto. I have limited knowledge of hydrates but I understand they are formed when natural gas and water is mixed under pressure at temperatures above freezing? With our situation the ice frost is injected into an LNG stream. Do you think the combination will form hydrates when mixed at...

the ice must be sinking to the bottom of the vessel and the majority of it would be away from the suction nozzle. I guess this is why it doesn't get pulled through the system all the time. I have a theory that the filter will hold the moisture like a sponge until it gets bad enough to affect the...

Cheers iainuts. The filter goes from ambient to cryo roughly 18 times a day but not in even intervals. Do you think that the moisture will be blown through the 10 micron filter until it gets cold again? If that's the case we mightn't be capturing all the moisture before it leaves our system. I...

Hello, I'm a long time reader, first time poster. Thanks everyone for taking time to expand the knowledge of the human race. I have a problem with a small scale LNG dispensing system. One part of the process allows small amounts of moisture (~1cc per event, 18 times per day) to be injected back...