CN210845667U

CN210845667U - Oil gas recovery device

Info

Publication number: CN210845667U
Application number: CN201921779418.1U
Authority: CN
Inventors: 曹唐浩; 王成智
Original assignee: Cangzhou Zhongbo Heavy Industry Machinery & Equipment Co ltd
Current assignee: Cangzhou Zhongbo Heavy Industry Machinery & Equipment Co ltd
Priority date: 2019-10-22
Filing date: 2019-10-22
Publication date: 2020-06-26
Anticipated expiration: 2029-10-22

Abstract

The utility model discloses a vapor recovery system device, including sealed cabinet, install the switch board in the sealed cabinet, the adsorption tank, the screw pump, vacuum pump and membrane module, air inlet and oil storage tank intercommunication are passed through to one side of membrane module, and one side of membrane module is provided with the vacuum pump, the downside of membrane module is provided with the collection oil box, the collection oil box is connected with the oil inlet of screw pump, the oil-out of screw pump passes through pipe and oil storage tank intercommunication, the adsorption tank is located the opposite side of membrane module, be provided with on the adsorption tank and adsorb mouthful and with the gas outlet of the external intercommunication of sealed cabinet, the motorised valve of all connecting in absorption port and. The utility model adopts the membrane separation method and the adsorption method to carry out double recovery on the oil gas, effectively separates the gasoline steam, and the treated oil gas is far lower than the concentration specified by the national standard; the device has high treatment efficiency, energy conservation, small occupied area and low investment and operation cost; the whole PLC control is adopted, unattended operation is realized, and the use is simple and convenient.

Description

Oil gas recovery device

Technical Field

The utility model relates to a petroleum storage equipment technical field especially relates to an oil gas recovery device.

Background

Petroleum and its products are the mixture of various hydrocarbon compounds, the volatile matter of its light component is petroleum gas, the petroleum gas is the mixture containing several organic hydrocarbon compounds and air, and its main components include butane, pentane, benzene, xylene, ethyl benzene, etc., and are carcinogenic substances. Most facilities which are easy to generate a large amount of oil gas, such as gas stations, oil depots, oil terminals, oil refineries and the like, are distributed in cities and the periphery of the cities, and a large amount of oil gas is discharged in the oil unloading and oil filling processes, if the oil gas is directly discharged into the atmosphere, the safety production is endangered, the environment is polluted, the quality of oil products is reduced, and economic loss is caused, so that the oil gas in the gas stations and other places is required to be recovered.

At present, the main methods commonly used for oil gas recovery are absorption method, adsorption method, condensation method and membrane separation method. The absorption method is a method for absorbing and dissolving oil gas by using a solvent at normal temperature and normal pressure or normal temperature and low pressure, and has the defects of low recovery rate, large floor area and the like; the adsorption method is a method for separating oil gas by utilizing the difference of the binding force between each component and an adsorbent, and achieves the aim of recovering the oil gas through desorption; the condensation method is a method for recovering oil gas by increasing pressure or reducing temperature in a condenser, and the method has a simple principle, but has the defects of complex device, high cost and the like because the refrigeration temperature requirement is lower due to indirect heat transfer, and the higher recovery rate can be ensured generally below 70 ℃; the membrane separation method is a modern chemical separation technology which rises rapidly since the 80 s in the 20 th century, and has the advantages of small occupied area, wide application range, low energy consumption and the like.

SUMMERY OF THE UTILITY MODEL

In order to overcome the not enough of prior art, the utility model provides a filling station's automatic control's embrane method adds adsorbs vapor recovery system, and the device can effectively retrieve the oil gas that gives off.

In order to solve the technical problem, the utility model provides a following technical scheme:

the utility model provides a vapor recovery system device, includes the seal cabinet, install switch board, adsorption tank, screw pump, vacuum pump and membrane module in the seal cabinet, air inlet and oil storage tank intercommunication are passed through to one side of membrane module, just one side of membrane module is provided with the vacuum pump, the downside of membrane module is provided with the collection oil box, the collection oil box is connected with the oil inlet of screw pump, the oil-out of screw pump passes through pipe and oil storage tank intercommunication, the adsorption tank is located the opposite side of membrane module, be provided with on the adsorption tank and adsorb mouthful and with the gas outlet of the external intercommunication of seal cabinet, the motorised valve of all connecting in absorption mouth and the gas outlet.

As an optimal technical scheme of the utility model, install the PLC controller in the switch board, the PLC controller is connected with screw pump, vacuum pump and motorised valve are automatically controlled respectively.

As an optimal technical scheme of the utility model, install pressure transmitter in the oil storage tank, pressure transmitter and PLC controller signal connection.

As an optimized technical scheme of the utility model, install the anti-spill valve in the air inlet.

As an optimal technical scheme of the utility model, the bottom of adsorption tank is passed through the pipe and is connected with the oil inlet of screw pump.

Compared with the prior art, the utility model discloses the beneficial effect that can reach is:

the utility model adopts the membrane separation method and the adsorption method to carry out double recovery on the oil gas, effectively separates the gasoline steam, and the treated oil gas is far lower than the concentration specified by the national standard; the device has high treatment efficiency, energy conservation, small occupied area and low investment and operation cost; the whole PLC control is adopted, unattended operation is realized, and the use is simple and convenient.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

fig. 2 is a schematic view of the oil gas recovery of the present invention;

wherein: 1. a control cabinet; 2. an electrically operated valve; 3. an oil spill prevention valve; 4. a pressure transmitter; 5. an adsorption tank; 6. a screw pump; 7. a vacuum pump; 8. a membrane module.

Detailed Description

The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are presented herein only to illustrate and explain the present invention, and not to limit the present invention.

Referring to fig. 1-2, an oil gas recovery device comprises a sealing cabinet, a control cabinet 1, an adsorption tank 5, a screw pump 6, a vacuum pump 7 and a membrane module 8 are installed in the sealing cabinet, one side of the membrane module 8 is communicated with an oil storage tank through an air inlet, the vacuum pump 7 is arranged on one side of the membrane module 8, an oil collecting box is arranged on the lower side of the membrane module 8 and connected with an oil inlet of the screw pump 6, an oil outlet of the screw pump 6 is communicated with the oil storage tank through a guide pipe, the adsorption tank 5 is arranged on the other side of the membrane module 8, an adsorption port and an air outlet communicated with the outside of the sealing cabinet are formed in the adsorption tank 5, and electric valves 2.

Install the PLC controller in the switch board 1, the PLC controller is connected with screw pump 6, vacuum pump 7 and motorised valve 2 automatically controlled respectively, wholly adopts PLC control, realizes unmanned on duty, and is simple to use, convenient.

And a pressure transmitter 4 is installed in the oil storage tank, and the pressure transmitter 4 is in signal connection with the PLC.

An oil overflow prevention valve 3 is arranged in the air inlet to prevent oil overflow, and a film assembly 8 is effectively protected. The bottom of the adsorption tank 5 is connected with an oil inlet of the screw pump 6 through a guide pipe.

Specifically, when the device is used, when the pressure of the underground oil storage tank measured by the pressure transmitter 4 is greater than 150Pa, the PLC controls the anti-spill valve 3 to be started, oil gas in the oil storage tank enters the membrane component 8 through the anti-spill valve 3, the vacuum pump 7 is used for pumping air to enable the permeation side of the membrane to form vacuum, the oil gas is pushed to rapidly pass through the membrane component 8 through pressure difference, so that the oil and the air are separated, the oil subjected to the treatment is pumped back to the oil storage tank through the screw pump 6, the tail gas of the permeation side enters the adsorption tank 5, the adsorption tank 5 purifies and separates the oil gas again, the separated oil is pumped back to the oil storage tank through the screw pump 6, and the purified tail gas is discharged to the air. When the pressure of the underground oil storage tank is lower than 50Pa as measured by the pressure transmitter 4, the oil spill prevention valve 3 is closed, the device is automatically stopped, and the device is repaired to be started next time.

The embodiments of the present invention are not limited to the above embodiments, and according to the contents of the above embodiments of the present invention, the above preferred embodiments can also make modifications, replacements or combinations of other forms by using conventional technical knowledge and conventional means in the field without departing from the basic technical idea of the present invention, and the obtained other embodiments all fall within the scope of the present invention.

Claims

1. The utility model provides an oil gas recovery device, includes the seal cabinet, its characterized in that, install switch board (1), adsorption tank (5), screw pump (6), vacuum pump (7) and membrane module (8) in the seal cabinet, air inlet and oil storage tank intercommunication are passed through to one side of membrane module (8), just one side of membrane module (8) is provided with vacuum pump (7), the downside of membrane module (8) is provided with an album oil box, it is connected with the oil inlet of screw pump (6) to gather oil box, the oil-out of screw pump (6) passes through pipe and oil storage tank intercommunication, adsorption tank (5) are located the opposite side of membrane module (8), be provided with on adsorption tank (5) and adsorb mouthful and with the gas outlet of the external intercommunication of seal cabinet, all connect motorised valve (2) in absorption mouth and the gas outlet.

2. The oil and gas recovery device according to claim 1, characterized in that a PLC controller is installed in the control cabinet (1), and the PLC controller is electrically connected with the screw pump (6), the vacuum pump (7) and the electric valve (2) respectively.

3. The oil and gas recovery device according to claim 2, characterized in that a pressure transmitter (4) is installed in the oil storage tank, and the pressure transmitter (4) is in signal connection with a PLC controller.

4. The oil and gas recovery device according to claim 1, characterized in that an anti-spill valve (3) is installed in the air inlet.

5. The oil and gas recovery device according to claim 1, characterized in that the bottom of the canister (5) is connected with the oil inlet of the screw pump (6) by a conduit.