CN211462637U

CN211462637U - Graded adsorption oil gas recovery device suitable for low-temperature environment

Info

Publication number: CN211462637U
Application number: CN201922485907.2U
Authority: CN
Inventors: 范月明; 樊喜明; 王东明
Original assignee: Hebei Tanhang Environmental Protection Technology Co ltd
Current assignee: Hebei Tanhang Environmental Protection Technology Co ltd
Priority date: 2019-12-31
Filing date: 2019-12-31
Publication date: 2020-09-11
Anticipated expiration: 2029-12-31

Abstract

The utility model discloses a hierarchical absorption vapor recovery system device that is adapted to low temperature environment, including the admission line, adsorb the pipeline, the recovery pipeline, the heat preservation casing, ventilation mechanism and heating mechanism, it has hierarchical absorption mechanism to establish ties in proper order on the adsorption pipeline, exhaust solenoid valve and back-fire relief ventilation cap, the tail end of admission line is connected with the adsorption pipeline, the inlet end of recovery pipeline is fixed in between admission solenoid valve and the hierarchical absorption mechanism, each electrical apparatus part all is connected through the explosion-proof terminal box in explosion-proof cable and the heat preservation casing, the explosion-proof terminal box is connected with the outer controller of heat preservation casing through explosion-proof cable, be provided with the touch-sensitive screen that is used for setting up and showing on the controller. The utility model adopts the above structure a hierarchical adsorption vapor recovery unit who is adapted to low temperature environment makes the device be applicable to low temperature environment through heat preservation casing and heating mechanism, improves adsorption effect through hierarchical adsorption apparatus structure, and equipment security is high.

Description

Graded adsorption oil gas recovery device suitable for low-temperature environment

Technical Field

The utility model relates to an oil gas recovery device especially relates to a hierarchical absorption oil gas recovery device who is adapted to low temperature environment.

Background

Gasoline is an important energy source in the life of people at present, but has very strong volatility, and if the gasoline is allowed to volatilize freely, a large amount of energy is wasted, and more importantly, the environment is polluted. Therefore, during the transportation and storage of gasoline, the recovery of volatile oil and gas is necessary. In the prior art, oil gas recovery mainly comprises technical means such as a condensation method, an absorption method, an adsorption method, a membrane separation method and the like. The condensation method and the adsorption method are the most important means in the step 2, but the condenser consumes a lot of electricity, the equipment price is high, and the maintenance is troublesome. Although the adsorption method is simple to use, the active carbon adsorbent has short service life, cannot be desorbed after adsorption and can cause secondary pollution. Adopt molecular sieve formula adsorption technology among the prior art, can realize the absorption and the desorption of oil gas, all adopt single-stage absorption among the existing equipment, the adsorption effect is poor for the gas of emission can not satisfy the demand of environmental protection, simultaneously because adopt the easy emergence accident of electrical equipment in the equipment, make the security of filling station reduce.

Meanwhile, in cold northern areas, the temperature is generally about minus 40 ℃ in winter, but the working temperature of the adsorbing material is between minus 20 ℃ and 40 ℃, so that the adsorption recovery efficiency is reduced in cold environments, and the oil gas treatment cannot meet the environmental protection requirement.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a hierarchical adsorption vapor recovery unit who is adapted to low temperature environment makes the device be applicable to low temperature environment through heat preservation casing and heating mechanism, improves adsorption effect through hierarchical adsorption apparatus structure, and the equipment security is high.

In order to achieve the purpose, the utility model provides a graded adsorption oil gas recovery device suitable for low temperature environment, which comprises an air inlet pipeline, an adsorption pipeline, a recovery pipeline, a heat preservation shell, a ventilation mechanism and a heating mechanism, wherein the adsorption pipeline is sequentially connected with a graded adsorption mechanism, an exhaust solenoid valve and a fire-retardant ventilation cap in series;

a flame arrester is arranged at the air inlet end of the air inlet pipeline, the tail end of the air inlet pipeline is connected with the adsorption pipeline, and a detection mechanism and an air inlet electromagnetic valve are arranged on the air inlet pipeline;

the air inlet end of the recovery pipeline is fixed between the air inlet electromagnetic valve and the grading adsorption mechanism, the air outlet end of the recovery pipeline is provided with a flame arrester, and the recovery pipeline is sequentially provided with a vacuum pump, a check valve and a recovery tank;

the exhaust electromagnetic valve, the detection mechanism, the air inlet electromagnetic valve, the ventilation mechanism, the heating mechanism and the vacuum pump are all connected with an explosion-proof junction box in the heat-insulating shell through explosion-proof cables, the explosion-proof junction box is connected with a controller outside the heat-insulating shell through the explosion-proof cables, and a touch screen used for setting and displaying is arranged on the controller.

Preferably, the graded adsorption mechanism comprises at least two adsorption tanks connected in series, and the adsorption tanks are molecular sieve type adsorption tanks.

Preferably, the detection mechanism comprises an explosion-proof flow meter and an explosion-proof negative pressure meter, and the air inlet electromagnetic valve is arranged between the explosion-proof flow meter and the explosion-proof negative pressure meter.

Preferably, the exhaust solenoid valve and the intake solenoid valve are explosion-proof solenoid valves.

Preferably, the heat-insulating shell is a double-layer shell, and heat-insulating materials are filled between the double-layer shell.

Preferably, the ventilation mechanism comprises a ventilation opening and an explosion-proof arbor wheel fan, a filter screen is fixed at the position, corresponding to the ventilation opening, of the inner side of the heat preservation shell, a pull door is fixed on the ventilation opening, and the explosion-proof arbor wheel fan is connected with the explosion-proof cable box through an explosion-proof cable.

Preferably, the heating mechanism comprises a plurality of explosion-proof heaters and a plurality of temperature sensors, and the explosion-proof heaters and the temperature sensors are uniformly fixed on the inner side of the heat-insulating shell and are connected with the explosion-proof cable box through explosion-proof cables.

Therefore, the staged adsorption oil gas recovery device which is suitable for the low-temperature environment and adopts the structure of the utility model enables the device in the heat insulation shell to be at the proper working temperature through the heat insulation shell and the heating mechanism, thereby avoiding poor treatment effect caused by low temperature; the adsorption effect is improved by a graded adsorption mechanism consisting of at least two adsorption tanks connected in series; meanwhile, the electromagnetic valves in the shell are all explosion-proof electromagnetic valves, the detection mechanism also adopts an explosion-proof flow meter and an explosion-proof negative pressure meter, all electrical parts are connected by explosion-proof cables, and an explosion-proof junction box is adopted, so that the overall safety of the equipment is improved; a touch screen is arranged outside the shell, and operation is convenient and quick.

The technical solution of the present invention is further described in detail by the accompanying drawings and examples.

Drawings

FIG. 1 is a schematic diagram of the staged adsorption oil-gas recovery device adapted to low temperature environment of the present invention;

fig. 2 is the utility model relates to a hierarchical adsorption vapor recovery system device shell structure sketch map suitable for low temperature environment.

Reference numerals

1. A heat-insulating shell; 2. an air intake duct; 21. a main intake valve; 22. an explosion-proof flow meter; 23. an air inlet solenoid valve; 24. an explosion-proof negative pressure meter; 3. an adsorption pipeline; 31. a molecular sieve type adsorption tank; 32. an exhaust solenoid valve; 33. a fire retardant ventilation cap; 4. an explosion-proof arbor wheel fan; 5. a temperature sensor; 6. a recovery pipeline; 61. a vacuum pump; 62. a check valve; 63. a recovery tank; 7. a flame arrestor; 8. an explosion-proof heater; 9. a vent; 91. a filter screen; 92. a sliding door; 10. a controller; 101. a touch screen; 11. an explosion-proof junction box; 12. explosion-proof cable.

Detailed Description

Examples

Fig. 1 is the utility model relates to a hierarchical adsorption vapor recovery system device schematic diagram that is adapted to low temperature environment, fig. 2 is the utility model relates to a hierarchical adsorption vapor recovery system device shell structure sketch map that is adapted to low temperature environment, as shown in the figure, a hierarchical adsorption vapor recovery system device that is adapted to low temperature environment includes admission line 2, adsorption pipeline 3, recovery pipeline 6, heat preservation casing 1, ventilation mechanism and heating mechanism. The heat preservation shell 1 of the embodiment is a double-layer shell, and heat preservation materials are filled between the double-layer shell and used for heat preservation of parts in the heat preservation shell 1.

It has hierarchical adsorption apparatus to construct, exhaust solenoid valve 32 and back-fire relief ventilation cap 33 to establish ties in proper order on the adsorption pipeline 3, and hierarchical adsorption apparatus constructs including two at least series connection's adsorption tanks, and this embodiment adsorption tank is molecular sieve formula adsorption tank 31, and this embodiment adopts two molecular sieve formula adsorption tanks 31, has improved adsorption effect greatly. The air inlet end of the air inlet pipeline 2 is provided with a flame arrester 7, the tail end of the air inlet pipeline 2 is connected with the adsorption pipeline 3, and the air inlet pipeline 2 is provided with a detection mechanism and an air inlet electromagnetic valve 23. The detection mechanism comprises an explosion-proof flow meter 22 and an explosion-proof negative pressure meter 24, an air inlet electromagnetic valve 23 is arranged between the explosion-proof flow meter 22 and the explosion-proof negative pressure meter 24, the exhaust electromagnetic valve 32 and the air inlet electromagnetic valve 23 are explosion-proof electromagnetic valves in the embodiment, and an air inlet main valve 21 is further arranged between a flame arrester 7 on the air inlet pipeline 2 and the explosion-proof flow meter 22, so that the equipment can be manually closed conveniently. Because the flow rate of some gas stations is too small, which results in too large error of the accumulated flow rate, or too large flow rate and is not suitable for time control, the present embodiment adopts time and flow rate accumulation dual control, when one of the parameters of the time or flow rate accumulation reaches a set value, the recovery operation is performed, the air inlet electromagnetic valve 23(S1) and the air outlet electromagnetic valve 32(S2) are closed, and the vacuum pump 63 is started to pump the desorption gas into the recovery tank 61 for recovery. The inlet end of the recovery pipeline 6 is fixed between the air inlet electromagnetic valve 23 and the grading adsorption mechanism, the air outlet end of the recovery pipeline 6 is provided with the flame arrester 7, the recovery pipeline 6 is sequentially provided with the vacuum pump 61, the check valve 62 and the recovery tank 63, and the check valve 62 prevents the oil gas in the recovery tank 63 from returning to the adsorption tank.

The ventilation mechanism comprises a ventilation opening 9 and an explosion-proof arbor wheel fan 4, a filter screen 91 is fixed at the position, corresponding to the ventilation opening 9, on the inner side of the heat preservation shell 1, sundries are prevented from entering the heat preservation shell 1, the ventilation mechanism is used for dissipating heat when the temperature is too high, a pull door 92 is fixed on the ventilation opening 9, a worker can conveniently open or close the ventilation opening, and the explosion-proof arbor wheel fan 4 is connected with an explosion-proof cable box 11 through an explosion-proof cable 12. Heating mechanism includes a plurality of explosion-proof heater 8 and a plurality of temperature sensor 5, and this embodiment is provided with the explosion-proof heater 8 that two symmetries set up and the temperature sensor 5 that two symmetries set up, explosion-proof heater 8 and temperature sensor 5 through explosion-proof cable 12 with explosion-proof cable box 11 is connected, and this embodiment sets for the temperature at-10 degrees centigrade to 10 degrees centigrade, and when the temperature that at least one temperature sensor 5 detected was less than-10 degrees centigrade, start explosion-proof heater 8, when the temperature that at least one temperature sensor 5 detected is higher than 10 degrees centigrade, close explosion-proof heater 8, make equipment can be applicable to cold environment, improve the quantity that adsorption efficiency can add temperature sensor 5 and explosion-proof heater 8 according to actual need, and temperature control belongs to common use setting in electricity field, no longer gives unnecessary details here.

Exhaust solenoid valve 4, detection mechanism, air inlet solenoid valve 2 and vacuum pump 63 all are connected with the explosion-proof terminal box 9 in the casing 1 through explosion-proof cable 11, explosion-proof terminal box 9 is connected with the outer controller 10 of casing 1 through explosion-proof cable 11, controller 10 sets up in the distribution room in filling station, be provided with the touch-sensitive screen 101 that is used for setting up and showing on the controller 10, make things convenient for the staff to set for the parameter and look over data, the end of giving vent to anger all is provided with spark arrester 7 assurance equipment safety in utilization with giving vent to anger.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting the same, and although the present invention is described in detail with reference to the preferred embodiments, those skilled in the art should understand that: the technical solution of the present invention can still be modified or replaced by other equivalent means, and the modified technical solution can not be separated from the spirit and scope of the technical solution of the present invention.

Claims

1. The utility model provides a hierarchical absorption vapor recovery system device that is adapted to low temperature environment, includes admission line, adsorption pipeline and recovery pipeline, its characterized in that: the adsorption pipeline is sequentially connected with a grading adsorption mechanism, an exhaust electromagnetic valve and a fire-retardant ventilation cap in series;

2. The staged adsorption oil-gas recovery device adapted to low temperature environment according to claim 1, wherein: the hierarchical adsorption device includes two at least series connection's adsorption tanks, the adsorption tanks is molecular sieve formula adsorption tanks.

3. The staged adsorption oil-gas recovery device adapted to low temperature environment according to claim 1, wherein: the detection mechanism comprises an explosion-proof flow meter and an explosion-proof negative pressure meter, and the air inlet electromagnetic valve is arranged between the explosion-proof flow meter and the explosion-proof negative pressure meter.

4. The staged adsorption oil-gas recovery device adapted to low temperature environment according to claim 1, wherein: the exhaust electromagnetic valve and the air inlet electromagnetic valve are explosion-proof electromagnetic valves.

5. The staged adsorption oil-gas recovery device adapted to low temperature environment according to claim 1, wherein: the heat-insulating shell is a double-layer shell, and heat-insulating materials are filled between the double-layer shell.

6. The staged adsorption oil-gas recovery device adapted to low temperature environment according to claim 1, wherein: the ventilation mechanism comprises a ventilation opening and an explosion-proof arbor wheel fan, a filter screen is fixed at the position, corresponding to the ventilation opening, of the inner side of the heat-insulating shell, a pull door is fixed on the ventilation opening, and the explosion-proof arbor wheel fan is connected with an explosion-proof cable box through an explosion-proof cable.

7. The staged adsorption oil-gas recovery device adapted to low temperature environment according to claim 1, wherein: the heating mechanism comprises a plurality of explosion-proof heaters and a plurality of temperature sensors, wherein the explosion-proof heaters and the temperature sensors are uniformly fixed on the inner side of the heat-insulating shell and are connected with the explosion-proof cable box through explosion-proof cables.