RU137512U1 - DEVICE FOR HYDROCARBON VAPORS AT PETROL FILLING STATIONS - Google Patents

Abstract

A device for capturing hydrocarbon vapors at a gas station containing a reservoir with hydrocarbon vapors, a receiver, a compressor, a refrigerator, a crane, a tank with diesel fuel, characterized in that the air-vapor mixture is additionally taken from the vehicle’s tank using a filling gun with a rubber seal and an additional exhaust channel air-vapor mixture from the vehicle’s tank, a pressure sensor to turn on the compressor, a valve is installed after the receiver for uniform and stable loading of the system, vertical polymer the second membrane filter of selective action, which allows to reduce the energy consumption for separation of the air-vapor mixture, the tank with fuel "Normal-80" to collect the condensed fraction of the air-vapor mixture.

Description

The invention relates to a device for trapping hydrocarbon vapors at a gas station.

A device for trapping gasoline vapors is known [RF Patent No. 2383447 "Device for trapping gasoline vapors"]. Diesel fuel is circulated through the pump between the scrubber and the tank with gasoline, then the hydrocarbon components together with diesel fuel are sent to the scrubber filled with the expended material and diesel fuel, after which the hydrocarbon components rising upward, accumulating in the upper part of the tank, are installed using a vacuum pump installed in annular pipeline, returning back to the tank with gasoline and shut-off valves block the movement of diesel fuel in the annular pipeline.

A known device for trapping gasoline vapors has the disadvantages of:

a) diesel fuel is unsuitable for further use due to the presence of water in it. It must be sent for processing, which leads to additional financial costs;

b) the diesel level in the scrubber is unknown.

Known RF Patent No. 129089 "Installation for the capture of vapors of oil products from railway, automobile tanks and tanks with an automatic cooling system." A removable device on a flexible sleeve is tightly mounted on the neck of the railway tank, connected to a section of a stationary steam pipeline equipped with a compressor for pumping oil vapor and connected to the main steam pipe connected to a recessed reservoir. The tank is equipped with a receiver for oil vapor and a filter with an absorber. The underground steam line passes through a cooling system, including a heat exchanger, a pipeline with valves, a tank with a cooling mixture, and a pump that automatically works through a communication line or relay from a compressor or from a pump for supplying oil products to a vertical steel tank.

This installation has high energy costs associated with the cooling of the vapor-air mixture (PVA), as well as the use of additional tanks for PVA.

Known installation [RF Patent No. 100061 "Adaptive installation for the capture of hydrocarbon vapors and low boiling liquids from tanks during storage or transshipment"]. The installation consists of a tank with an oil product or flammable liquid, combined by a gas equalization line, a receiver (gas tank), the condensate outlet of which is connected to the lower part of the condensate collector tank, and the limit sensors for vacuum and excess pressure connected to it, and a blower-compressor connected to the gas supply line of the receiver, the bypass line with the valve, and the gas outlet connected through a non-return valve to the evaporator-heat exchanger, which condenses the vapor-air Mesi (PVA) with a self-regulating pressure regulator installed at the outlet and a chiller for cooling and condensing the PVA in the evaporator-heat exchanger connected via a non-return valve to the drain line to the condensate reservoir tank.

This adaptive installation for capturing vapors of hydrocarbons and boiling liquids from tanks during their storage or transshipment has the following disadvantages:

a) high energy consumption of the installation.

b) the fall of water into diesel fuel, the need for re-processing of diesel fuel for use in diesel engines.

The purpose of the invention is the development of an effective device for trapping hydrocarbon vapors at a gas station.

This goal is achieved by installing a vertical membrane filter of selective action.

Figure 1 presents a schematic view of a device for capturing hydrocarbon vapors at a gas station.

A fuel gun with a rubber seal and an additional channel is used to collect the air-vapor mixture from the vehicle’s tank to divert the PVA from the vehicle’s tank to the system.

A device for collecting hydrocarbon vapors at a gas station containing a tank with hydrocarbon vapors 1, a fuel gun 2, a pressure sensor 3, a compressor 4, a receiver 5, valve 6, a refrigerator 7, a vertical membrane filter of selective action 8, valve 9, a tank with fuel “Normal - 80 ”10. The membrane filter consists of a non-woven material that serves as a membrane substrate; a rigid, durable and solvent resistant microporous support layer that provides mechanical support without mass resistance to penetration and a dense, without defects, elastic polymer layer performing separation.

A device for capturing hydrocarbon vapors at a gas station works as follows.

Hydrocarbon vapors from the tank 1 or the filling gun 2 pass through the pressure sensor 3, the compressor 4 enters the receiver 5, then, using the valve 6, the air-vapor mixture (PVA) passes through the refrigerator 7, where the PVA is pre-separated and the water vapor condenses and water is drained after which the partially purified PVA enters a vertical polymer membrane filter of selective action 8, which can significantly reduce energy consumption for separation of the air-vapor mixture, air is removed from the system with Strongly valve 9 and condensable hydrocarbons enter the fuel tank 10 'Normal - 80 ".

The use of a vertical polymer membrane filter of selective action in a device for collecting hydrocarbon vapors at gas stations eliminates the installation of a second refrigerator and separates PVA with high efficiency. Fuel “Normal - 80” is suitable for further use in gasoline engines, since water from PVA is removed by condensation in the refrigerator, and the octane number of the condensed fraction is more than 80.

Claims (1)

A device for capturing hydrocarbon vapors at a gas station containing a reservoir with hydrocarbon vapors, a receiver, a compressor, a refrigerator, a crane, a tank with diesel fuel, characterized in that the air-vapor mixture is additionally taken from the vehicle’s tank using a filling gun with a rubber seal and an additional exhaust channel air-vapor mixture from the vehicle’s tank, a pressure sensor to turn on the compressor, a valve is installed after the receiver for uniform and stable loading of the system, vertical polymer the second membrane filter of selective action, which allows to reduce the energy consumption for separation of the air-vapor mixture, the tank with fuel "Normal-80" to collect the condensed fraction of the air-vapor mixture.

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