The recovery methods for oil and gas recovery equipment at oil depots primarily include condensation, adsorption, membrane separation, and various combined approaches; each method possesses distinct characteristics regarding treatment efficiency, applicable operating conditions, and operating costs.
Condensation recovery is a common method that liquefies volatile hydrocarbons by lowering the temperature of the oil-gas mixture, allowing them to be recovered into the storage system. This method is suitable for environments with high oil-gas concentrations and is characterized by high recovery efficiency and relatively stable operation.
Adsorption recovery typically employs porous materials, such as activated carbon, to adsorb organic components from the oil-gas mixture. Once saturation is reached, the adsorbent is regenerated via desorption for cyclic use. This method is suitable for treating oil-gas mixtures with low to medium concentrations, offering operational flexibility and strong adaptability.
Membrane separation recovery utilizes the selective permeability of polymer membranes regarding different gas molecules to separate hydrocarbons from the air, thereby recovering the oil and gas. Characterized by a compact structure and a high degree of automation, this method is suitable for scenarios requiring high efficiency and space optimization.
In practical engineering applications, oil depot recovery systems often employ a combination of technologies-such as condensation-adsorption or adsorption-membrane separation-to enhance overall recovery efficiency and stability, reduce energy consumption, and meet environmental emission standards.