shvet
Petroleum
- Aug 14, 2015
- 749
Good day, forum
Please direct me in case of this topic has been discussed somewhere before.
The question is concerned mobile tanks for liquified gases (rail cars, ISO tanks, trucks), let say propane and pentane. They have no device at the bottom of tank and are filled/emptied via a device located upside of the shell. Loading/unloading device has a pipe oriented downside which protrudes to the very bottom of shell and through which a tank is loaded/unloaded. The problem is actually this pipe does not provide complete unloading and there is dead space and some amount of liquid stays.
Someone can say that dead volume is negligible, but practice says that actual losses are 0.3-0.5 tonnes per a railcar which are quite painful for commerce.
Please guide me - are there dedicated devices for liquified gas (e.g. propane) and near products (e.g. pentane) for complete emptying? May be some external electric heaters?
Links to documents of Vendors/Manufacturers would be appreciated.
Please direct me in case of this topic has been discussed somewhere before.
The question is concerned mobile tanks for liquified gases (rail cars, ISO tanks, trucks), let say propane and pentane. They have no device at the bottom of tank and are filled/emptied via a device located upside of the shell. Loading/unloading device has a pipe oriented downside which protrudes to the very bottom of shell and through which a tank is loaded/unloaded. The problem is actually this pipe does not provide complete unloading and there is dead space and some amount of liquid stays.
Someone can say that dead volume is negligible, but practice says that actual losses are 0.3-0.5 tonnes per a railcar which are quite painful for commerce.
Please guide me - are there dedicated devices for liquified gas (e.g. propane) and near products (e.g. pentane) for complete emptying? May be some external electric heaters?
Links to documents of Vendors/Manufacturers would be appreciated.