Why oil-free cargo compressors are used on gas carriers?
19 Jun '19, 10:58
Oil-free cargo compressors installed to avoid oil contamination of the cargo.
In compressors of this type, the oil contained in the crankcase only. The crankcase is separated by stuffing boxes from the cylinder, so no oil may enter the cylinder and come into the contact with cargo.
To ensure proper reciprocation of the piston, piston rings made of Teflon are used.
19 Jun '19, 11:00