Abstract: An integrated vapor recovery system is provided in which the absorption oil used is withdrawn from the tank saturated with the vapors. The absorption oil is then chilled to about 35.degree. to 40 .degree. F. to produce a lean oil for the absorption column. The absorption column is operated at substantially or below atmospheric pressure, such that the vapors are recovered substantially by absorption alone with very little condensation. The lower pressures also reduce the likelihoods of explosive mixtures.

Abstract: A vapor recovery system is disclosed wherein the condensable organic compounds e.g., hydrocarbons or chemicals contained in hydrated air mixture are removed by first dehydrating the vapors by refrigeration then desiccation followed by indirect heat exchange with a refrigerant gas at cryogenic temperatures in a chiller. The clean vapors from the system may be used to pre-cool the air mixture prior to contact in the chiller. Additionally, the clean, dry vapors may be used to regenerate the desiccant within the dehydrator. The rehydrated clean vapors may be dehydrated by returning them to the feed to the system.

Abstract: The present invention utilizes a turboexpander coupled with a compressor in place of the Joules-Thomson expansion valve in a conventional refrigeration to achieve higher efficiency. More specifically the refrigeration is used in removing condensable hydrocarbons or chemical vapors from air which has been contaminated during loading and unloading at bulk plants. The more efficient turboexpansion cycle allows the use of saturated lower aliphatic hydrocarbons, such as ethane as refrigerant, the use of which would be precluded from normal Joules-Thomson expansion cycles. The turboexpander work is used to drive a compressor which partially recompresses the expanded refrigerant gas, providing an essentially isentropic expansion. Because the turboexpander and the compressor operate on the same fluid, the mass flows through both are equal thereby alleviating control and loading problems.

Abstract: The invention disclosed is that prefabricated wear pads are applied to the track link bodies of tracked vehicles by inserting projections of the pads through apertures in the link body from one side of the apertures and locking means co-acts with the projections to lock same to the body. Suitably, the locking means are push engagement with said projections to lock the pads to the link bodies as opposed to the conventional method of moulding the pad around and through the links. In an alternative arrangement, the locking means are cast in locking engagement with the projections as opposed to the push fitting.