VOLATILE EMISSION CONTROL FOR INACCESSIBLE STORAGE TANKS

摘要

A system controls emissions to the atmosphere of environmentally harmful components of vapor from liquids, typically hydrocarbons, supplied to, stored in and dispensed from difficult-to-access tanks such as underground storage tanks of gasoline dispensing stations. The system preferably utilizes a vapor processor to separate environmentally benign components from the the hydrocarbons and returns a comparatively hydrocarbon rich composition to the ullage of the storage tank. The system is especially useful for storage facilities in which the underground tanks each have only a single vapor port communicating with the ullage.