CN215196159U - Oil gas recovery device - Google Patents
Oil gas recovery device Download PDFInfo
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- CN215196159U CN215196159U CN202121013356.0U CN202121013356U CN215196159U CN 215196159 U CN215196159 U CN 215196159U CN 202121013356 U CN202121013356 U CN 202121013356U CN 215196159 U CN215196159 U CN 215196159U
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Abstract
The utility model discloses an oil gas recovery device belongs to gas separation technical field, the utility model discloses an oil gas recovery device mainly includes the compressor, absorption tower, membrane separator, pressure swing adsorption ware, the vacuum pump that connect gradually by the pipeline, the device still is equipped with the adsorption tank, and the infiltration side export of membrane separator links to each other with the vacuum pump entry, and the side export of holding back of membrane separator links to each other with the pressure swing adsorption ware entry, and the desorption gas export of pressure swing adsorption ware links to each other with the entry of vacuum pump, and the desorption gas export of adsorption tank links to each other with the entry of vacuum pump, and the export of vacuum pump links to each other with the entry of compressor, and the entry pipeline of adsorption tank and the entry pipeline of compressor link to each other with the device main pipeline of admitting air respectively. The utility model discloses an oil gas recovery device can gain the effect of the flat millet of peak clipping through addding the adsorption tank, has and reduces the design load, practices thrift disposable equipment investment and operation energy consumption, and area advantage such as little.
Description
Technical Field
The utility model belongs to the technical field of gas separation, concretely relates to oil gas recovery device.
Background
The processes of oil storage, loading and unloading, transportation and the like in the petrochemical industry can discharge a large amount of volatile organic gases (VOCs), so that the economic loss of raw materials is caused, and a series of safety problems, environmental pollution and harm to the health of a human body are caused. With the increasing strictness of the national discharge standards of VOCs, the establishment of oil gas recovery facilities is accelerated in the petrochemical industry, and the high-efficiency resource recovery of oil gas becomes an important way for compensating the emission reduction and treatment cost of enterprises.
In the prior art, the oil gas is mainly recovered by adopting the coupling process of technologies such as condensation, membrane separation, adsorption, absorption and the like. Such as compression-absorption-membrane-PSA coupling process, is commonly used for the recovery and emission reduction of respiratory gas in oil handling vehicles and vessels and tank areas. However, because oil gas is discharged intermittently, in order to cope with load impact caused by gas quantity and concentration fluctuation, the compressor needs to be in a running state no matter whether feeding is available or not, equipment needs to be designed according to the maximum load, and one-time investment and energy consumption are high. At present, the gas tank buffering technology is adopted to balance the gas amount of peaks and valleys and reduce load impact, but the gas tank investment is not so high, the economy is not high for projects with small gas treatment amount, and the occupied area is larger.
SUMMERY OF THE UTILITY MODEL
Aiming at the defects of the prior art, the utility model provides an oil gas recovery device, which utilizes an oil gas intermittent operation mode and is used as a buffer when the load is high by additionally arranging an active carbon adsorption tank; when the load is low, the vacuum pump is adopted to carry out desorption on the low-load gas, and the desorption gas is used for supplement, so that the peak clipping and valley leveling effects are achieved.
The technical scheme of the utility model as follows:
an oil gas recovery device mainly comprises a compressor, an absorption tower, a membrane separator, a pressure swing adsorber and a vacuum pump which are sequentially connected through pipelines along the flowing direction of oil gas, the oil gas recovery device is further provided with an adsorption tank, an outlet on the permeation side of the membrane separator is connected with an inlet of the vacuum pump, an outlet on the interception side of the membrane separator is connected with an inlet of the pressure swing adsorber, a desorption gas outlet of the pressure swing adsorber is connected with an inlet of the vacuum pump, a desorption gas outlet of the adsorption tank is connected with an inlet of the vacuum pump, an outlet of the vacuum pump is connected with an inlet of the compressor, and an inlet pipeline of the adsorption tank and an inlet pipeline of the compressor are respectively connected with a main gas inlet pipeline of the device.
Furthermore, a valve is arranged on an air inlet main pipeline of the device, and valves are arranged on an inlet pipeline, an outlet pipeline and a desorption gas outlet pipeline of the adsorption tank.
Further, the adsorbent filled in the adsorption tank is activated carbon.
Further, an emptying pipeline is arranged at the top of the pressure swing adsorber.
Furthermore, the separation composite membrane in the membrane separator is of a three-layer structure, and the material of the separation layer of the separation composite membrane is silicon rubber.
Further, the device is a prying and blocking device.
Compared with the prior art, the utility model discloses gain following beneficial effect:
1. the utility model has the advantages that aiming at the intermittent emission of oil gas, the adsorption tank is added to play a role in buffering during the peak of fluctuation of gas flow; in the valley period, the vacuum pump is used for desorbing the gas, and the desorbed gas is used for supplementing the gas amount in the valley period, so that the effect of peak clipping and valley leveling is achieved.
2. The utility model discloses design lectotype according to average flow has reduced the design load, practices thrift disposable equipment investment and operation energy consumption, and area is little.
Drawings
In order to clearly illustrate the embodiments of the present invention, the drawings to which the embodiments relate will be briefly described below.
Fig. 1 is a schematic view of the oil gas recovery device of the present invention, wherein, 1, a compressor; 2. an absorption tower; 3. a membrane separator; 4. a pressure swing adsorber; 5. a vacuum pump; 6. an adsorption tank; 7-10, a valve; a to e, pipelines.
Detailed Description
The present invention is described in detail with reference to the following embodiments, but the embodiments of the present invention are not limited thereto, and obviously, the embodiments in the following description are only some embodiments of the present invention, and for those skilled in the art, other similar embodiments may be obtained without inventive skill, and all fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", "front", "back", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
Example 1
The utility model provides an oil gas recovery device, as shown in figure 1, the oil gas recovery device mainly comprises a compressor 1, an absorption tower 2, a membrane separator 3, a pressure swing absorber 4 and a vacuum pump 5 which are connected in sequence along the flow direction of oil gas via pipelines, the oil gas recovery device is also provided with an adsorption tank 6, and an adsorbent filled in the adsorption tank 6 is activated carbon;
the outlet of the permeation side of the membrane separator 3 is connected with the inlet of a vacuum pump 5, the outlet of the interception side is connected with the inlet of a pressure swing adsorber 4, the desorbed gas outlet of the pressure swing adsorber 4 is connected with the inlet of the vacuum pump 5, the desorbed gas outlet of an adsorption tank 6 is connected with the inlet of the vacuum pump 5, and the outlet of the vacuum pump 5 is connected with the inlet of the compressor 1. The inlet line c of the canister 6 is connected to the inlet line b of the compressor 1, and to the inlet manifold a of the apparatus. The separation composite membrane in the membrane separator 3 is of a three-layer structure, the material of the separation layer of the separation composite membrane is silicon rubber, and the top of the pressure swing absorber 4 is provided with an emptying pipeline.
The air inlet main pipeline a is provided with a valve 7, the inlet pipeline c of the adsorption tank 6 is provided with a valve 8, the outlet pipeline d is provided with a valve 9, and the desorption gas outlet pipeline e is provided with a valve 10.
The oil gas recovery device of the embodiment has the working flow that:
at ordinary times (average flow), the valve 7 is opened, and the valves 8-10 are closed. Oil gas enters a compressor 1 through pipelines a and b to be pressurized to about 0.2MPa, then enters an absorption tower 2 to recover 60-80% of the oil gas, and mixed gas which is not absorbed at the tower top enters a membrane separator 3. The vacuum pump 5 creates a vacuum on the permeate side of the membrane to increase membrane separation efficiency. The permeation side of the membrane separator 3 obtains the permeation gas rich in oil, and the lean tail gas at the interception side enters the pressure swing absorber 4 for further purification. The purified tail gas reaches the emission standard and can be directly emptied; the desorbed gas obtained by vacuum desorption of the vacuum pump 5 is converged with the permeating gas of the membrane separator 3 and returns to the inlet of the compressor 1 for recycling together, thereby achieving the total oil gas recycling rate of more than 99.5 percent.
At peak (load higher than average flow), valves 7-9 are opened and valve 10 is closed. Part of the oil gas enters the adsorption tank 6 through pipelines a and c, and the gas after adsorption and purification is directly emptied through a pipeline d. Due to the buffering effect of the adsorption tank 6, the load impact of the instantaneous wave crest air quantity on the device is avoided.
At valley time (load is lower than average flow or 0), the valves 8-9 are closed, and the valves 7, 10 are opened. Vacuum desorption is carried out on the adsorption tank 6 by using a vacuum pump 5, and the obtained desorption gas is converged with the permeation gas of the membrane separator 3 and the desorption gas of the pressure swing adsorber 4 through a pipeline e and returns to the inlet of the compressor 1 for recycling together to supplement the valley time gas amount.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can substitute or change the technical solution and the inventive concept of the present invention within the technical scope of the present invention.
Claims (6)
1. The oil gas recovery device is characterized by mainly comprising a compressor, an absorption tower, a membrane separator, a pressure swing adsorber and a vacuum pump which are sequentially connected through pipelines, wherein an adsorption tank is further arranged on the device, an outlet on the permeation side of the membrane separator is connected with an inlet of the vacuum pump, an outlet on the interception side of the membrane separator is connected with an inlet of the pressure swing adsorber, a desorbed gas outlet of the pressure swing adsorber is connected with an inlet of the vacuum pump, a desorbed gas outlet of the adsorption tank is connected with an inlet of the vacuum pump, an outlet of the vacuum pump is connected with an inlet of the compressor, and an inlet pipeline of the adsorption tank and an inlet pipeline of the compressor are respectively connected with a main gas inlet pipeline of the device.
2. The oil and gas recovery device according to claim 1, wherein a valve is arranged on the gas inlet main pipeline of the device, and valves are arranged on the inlet pipeline, the outlet pipeline and the desorption gas outlet pipeline of the adsorption tank.
3. The oil and gas recovery device according to claim 1, wherein the adsorbent filled in the adsorption tank is activated carbon.
4. The oil and gas recovery device according to claim 1, wherein an evacuation line is arranged at the top of the pressure swing adsorber.
5. The oil and gas recovery device according to any one of claims 1 to 4, wherein the separation composite membrane in the membrane separator has a three-layer structure, and the material of the separation layer of the separation composite membrane is silicone rubber.
6. The oil and gas recovery device according to any one of claims 1 to 4, characterized in that said device is a prying block device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121013356.0U CN215196159U (en) | 2021-05-12 | 2021-05-12 | Oil gas recovery device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121013356.0U CN215196159U (en) | 2021-05-12 | 2021-05-12 | Oil gas recovery device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215196159U true CN215196159U (en) | 2021-12-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121013356.0U Active CN215196159U (en) | 2021-05-12 | 2021-05-12 | Oil gas recovery device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215196159U (en) |
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2021
- 2021-05-12 CN CN202121013356.0U patent/CN215196159U/en active Active
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