What components does a gas station’s vapor recovery system include?
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What components does a gas station’s vapor recovery system include? 1. Some gas stations only have a fuel offloading vapor recovery system; do they have a fuel filling vapor recovery system as well? 2. What is the actual effectiveness of the oil and gas recovery system? Can it ensure safety, reduce oil and gas losses, and contribute to environmental protection?
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To prevent oil and gas pollution during unloading, **GB20951-2007 \"Emission Standards for Air Pollutants from Gasoline Transportation\" and GB20952-2007 \"Emission Standards for Air Pollutants from Gas Stations\" were recently issued. Upgrading existing gas stations and tank trucks can enable the one-time recovery of oil and gas at these stations, thereby preventing oil and gas pollution. Brief description of the technical solution: All gasoline underground tank drain pipes are connected in parallel at a height of 2.5 meters above the ground, and after being connected in parallel, they are linked to a point at 4 meters height. The parallel connection point is located above the oil tanker to prevent oil from flowing into other tanks in case of spillage during unloading. Replace the flame arrestor and vent cap with an OPW 623 P/V valve, which should be installed at a height of 4 meters above the ground level in order to maintain a slight positive pressure (75 MM water column) in the vapor space of the underground tank. During oil unloading, the oil vapor is returned to the tank truck, where there is a slight negative pressure. A tee is connected to one of the exhaust pipes, and at its outlet, an OPW 1611AV-1605 3” oil and gas recovery sealing joint as well as an OPW 1711T joint sealing dust cover are installed. The oil and gas recovery hoses for tank trucks and underground oil tanks are made of lightweight, transparent Goodyear 3\" hoses that weigh only 1 KG per meter, making them easy to handle. At one end of the oil and gas recovery pipe, OPW 633CV-AL3030 together with the exhaust pipe’s OPW 1611AV-1605 oil and gas recovery sealing joint are used; at the other end of the oil and gas recovery pipe, OPW 633CV-AL3030/AL40 together with the tank truck oil and gas recovery pipe joint OPW 611T-AL40 oil and gas recovery sealing joint are used. This matching sealing joint is equipped with a special pushing mechanism that helps to prevent oil and gas leakage to the greatest extent possible during connection.
Oil and vapor recovery systems are now installed on many units for unloading oil, but it is said that the unloading speed is slow; as a result, many tank truck drivers avoid using such systems and instead simply open the manhole covers or the oil measurement ports to pour the oil in directly. There is a fuel recovery system, yes, but it seems to be rare around here
Hebei Province has already imposed mandatory requirements in this regard; all gas stations nowadays use oil and gas recovery systems.
To prevent oil and gas pollution during unloading, **GB20951-2007 \"Emission Standards for Air Pollutants from Gasoline Transportation\" and GB20952-2007 \"Emission Standards for Air Pollutants from Gas Stations\" were recently issued. Upgrading existing gas stations and tank trucks can enable the one-time recovery of oil and gas at these stations, thereby preventing oil and gas pollution.