Vapor-Recovery System

Vapor-recovery systems are of two basic types. One type connects a vacuum line to the tank and transports the tank vapors to a processing or gasoline plant. Technical Data used in the field explained in petroleum courses in Rawalpindi. The other type consists of a small compressor located by the tank battery. which compresses the tank vapors to a pressure suitable for lease use or sales.

Vacuum-Line System. The vacuum-line system usually is found only in large oil fields, where many tank batteries can be connected together into a relatively short gathering system. This system must employ well-maintained and properly functioning pressure/vacuum relieving devices and dependable control valves to prevent the tanks from collapsing or air from entering the gathering system. Some more details of petroleum courses in rawalpindi are as under.

Compression System. The compressor system is usually electrically driven and all components are skid mounted Some of these systems use a vane-type compressor and inject a refined oil by way of a lubrication system to seal the vanes against the compressor walls. In these systems an actual liquid recovery is accomplished by the sealing oil absorbing the condensed hydrocarbons from the compressed vapors and transporting them to storage with the returning sealing oil. Applications for this type of system are twofold: (I) compression of the rich stocktank  vapors for sale to a gasoline plant and (2) the recovery of liquids from the rich stock-tank vapors. Liquid hydrocarbons also can be recovered from the compressed vapor-recovery unit (VRU) vapor by either one or both of the following means.

A vapor cooling system (air-cooled or water-cooled) heat exchanger can be installed complete with a separator downstream of the hot compressed VRU vapor stream. Multiple vapor cooling systems may he used in between the stages of a multiple-staged compressron system. 2. A mechanical refrigeration unit may be installed downstream of the VRU for a higher-yield liquid hydrocarbon recovery. TSK Training for Skills and Knowledge is the best institute in Rawalpindi Islamabad for Pakistani Students who wants to join oil field after petroleum courses in Islamabad.