Three-Stage Oil and Gas Recovery Unit: Explosion-Proof Membrane Separation Vapor Recovery System for Gas Stations
With increasingly stringent global environmental emission standards, gas stations are required to control volatile gasoline vapor emissions effectively. A professional three-stage oil and gas recovery unit has become essential equipment for modern petrol stations to achieve energy conservation, emission reduction, and compliant operation. The WHSH-M three-stage oil and gas recovery system is specially designed for gas station tank vapor treatment, perfectly matching secondary vapor recovery transformation systems, and widely applicable to oil depots, chemical plants, and terminal vapor recovery scenarios.
Adopting advanced membrane separation technology, this automatic vapor recovery device realizes efficient separation of oil gas and air. When the underground tank pressure exceeds the preset threshold or during oil unloading, the unit starts automatically. It pressurizes and liquefies oil and gas through a booster pump, cools the mixed gas via an air-cooled heat exchanger, and completes gas-liquid separation in the separation tank. The liquefied gasoline flows back to the storage tank, while residual vapor passes through the membrane module. Under vacuum pump negative pressure, valid oil molecules penetrate the membrane and return to the tank, and purified air is discharged up to standard, achieving zero excessive vapor emission.
Safety and durability are the core advantages of this outdoor vapor recovery system. It features a professional explosion-proof grade of Ex db eb ia mb IIB T4 Gb and IP55 protection level, fully adapting to flammable and explosive working environments of gas stations. The equipment shell is made of high-strength cold-rolled steel plate with electrostatic spraying treatment, delivering excellent corrosion resistance, oxidation resistance, and outdoor weather resistance. All explosion-proof baffles maintain tight sealing, and strict operational specifications effectively avoid spark risks, ensuring 24-hour safe and stable operation.
Equipped with intelligent PLC control system and industrial touch screen, the unit supports unattended automatic operation. It can monitor real-time data including tank inlet pressure, membrane internal pressure, booster pump temperature, and exhaust concentration, with historical operating data, alarm records, and operation reports available for query and export. The reserved R485 interface supports remote parameter adjustment, data download and equipment management, greatly reducing manual operation costs. With a processing capacity of 4-20m³/h, low operating noise ≤75dB, and power consumption of 2.5-3kW, it balances high efficiency and energy saving perfectly.
Simple installation and low maintenance cost make it highly practical for global gas station projects. The equipment adopts a compact integrated structure with small floor space, supporting outdoor floor installation with standardized foundation and pipeline layout. Equipped with complete fire resistance and anti-backflow accessories, all pipelines pass strict air tightness tests before operation. Daily maintenance only requires regular inspection of lines, grounding devices and pump oil level, with stable performance and long service life. Complying with GB50759-2012 and GB20952-2007 national standards, it is a reliable compliant solution for gas station vapor recovery upgrading.