CN215939501U - Oil gas absorption device - Google Patents
Oil gas absorption device Download PDFInfo
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- CN215939501U CN215939501U CN202120838553.XU CN202120838553U CN215939501U CN 215939501 U CN215939501 U CN 215939501U CN 202120838553 U CN202120838553 U CN 202120838553U CN 215939501 U CN215939501 U CN 215939501U
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Abstract
The utility model discloses an oil-gas absorption device, which comprises a circulating liquid storage tank and a gas-liquid separation barrel arranged at the top of the circulating liquid storage tank, wherein the circulating liquid storage tank is communicated with the gas-liquid separation barrel up and down; an absorption pipe is arranged in the gas-liquid separation cylinder, the upper end of the absorption pipe extends upwards out of the top of the gas-liquid separation cylinder to form an oil-gas inlet, and a purified gas outlet is arranged at the top of the gas-liquid separation cylinder; the circulating liquid storage tank is provided with a circulating liquid outlet pipe, the absorption pipe is provided with a circulating liquid inlet pipe, and the circulating liquid outlet pipe is communicated with the circulating liquid inlet pipe through a circulating pump. The absorption tube is adopted to strengthen the absorption of the absorption liquid to oil gas, so that the volume of the equipment can be effectively reduced, and the heat insulation cost of the equipment is favorably reduced, thereby ensuring the gas-liquid two-phase temperature after absorption and reducing the energy consumption of low-temperature liquid phase absorption.
Description
Technical Field
The utility model relates to an oil gas absorption device.
Background
In recent years, the country deeply treats VOCs pollution of oil storage and transportation, and the defects of the conventional wet washing equipment are more prominent, and the defects are mainly reflected in the following aspects:
(1) the conventional wet washing absorption equipment needs to be provided with power equipment such as an induced draft fan and the like so as to overcome the running resistance of the system. (2) The conventional wet washing absorption system with the induced draft equipment has the air volume regulation which cannot adapt to the oil gas discharge characteristic of an oil storage, transportation and sale system and is easy to generate excessive suction. (3) The gas phase pressurization mode can be adopted to improve the contact efficiency of the conventional wet scrubbing absorption equipment, but the dry compressor has the problem of gas phase temperature rise and has certain potential safety hazard. (4) If adopt wet compressor to carry out the pressure boost to the gaseous phase, can cause the increase of moisture in the gaseous phase for follow-up condensation recovery unit increases in the increase of degree of frosting in the operation, is unfavorable for recovery unit's steady operation. (5) Because absorption equipment such as a filler absorption tower or a spray tower adopts a reverse gas-liquid contact mode, the absorption equipment needs to have a certain space volume to ensure the residence time of a gas phase, the volume of the absorption equipment is large, and the investment is relatively large for ensuring the heat insulation and heat preservation of the equipment.
SUMMERY OF THE UTILITY MODEL
In order to solve the problems, the utility model provides an oil-gas absorption device, which comprises a circulating liquid storage tank and a gas-liquid separation barrel arranged at the top of the circulating liquid storage tank, wherein the circulating liquid storage tank is communicated with the gas-liquid separation barrel up and down;
an absorption pipe is arranged in the gas-liquid separation cylinder, the upper end of the absorption pipe extends upwards out of the top of the gas-liquid separation cylinder to form an oil-gas inlet, and a purified gas outlet is arranged at the top of the gas-liquid separation cylinder;
the circulating liquid storage tank is provided with a circulating liquid outlet pipe, the absorption pipe is provided with a circulating liquid inlet pipe, and the circulating liquid outlet pipe is communicated with the circulating liquid inlet pipe through a circulating pump.
When the oil gas purification device runs, absorption liquid is contained in the circulating liquid storage tank, the absorption liquid is pumped into the absorption pipe through the circulating pump, contacts with oil gas entering the absorption pipe, absorbs organic components in the oil gas and enters the circulating liquid storage tank, the oil gas without the organic components becomes purified tail gas in the circulating liquid storage tank, and the purified tail gas is discharged through the purified gas outlet. In the absorption tube, the gas phase and the liquid phase realize pressure equalization and constant speed after the oil gas and the absorption liquid are fully mixed, thereby effectively improving the absorption efficiency of organic components. Through adjusting the flow of circulating pump, can guarantee that the inlet pressure control of oil gas is in the malleation within range, prevents the excessive suction to oil gas.
The absorption tube is adopted to strengthen the absorption of the absorption liquid to oil gas, so that the volume of the equipment can be effectively reduced, and the heat insulation cost of the equipment is favorably reduced, thereby ensuring the gas-liquid two-phase temperature after absorption and reducing the energy consumption of low-temperature liquid phase absorption.
Furthermore, in order to avoid liquid particles carried in the purified tail gas discharged from the purified gas outlet, a wire mesh mist catcher is arranged in the gas-liquid separation cylinder. And intercepting liquid particles possibly entrained in the purified tail gas by using a wire mesh mist eliminator.
Specifically, the wire mesh mist eliminator is a drawer type mist eliminator, a clamping groove is horizontally arranged in the gas-liquid separation cylinder, and the wire mesh mist eliminator is detachably clamped in the clamping groove. The drawer type foam catcher is adopted, so that the silk screen foam catcher can be conveniently replaced and maintained.
Further, the absorption pipe comprises a primary absorption pipe, the circulating liquid inlet pipe is arranged on the primary absorption pipe, the circulating liquid inlet pipe extends into the primary absorption pipe, a nozzle is arranged at one end of the circulating liquid inlet pipe extending into the primary absorption pipe, and a jet orifice of the nozzle faces downwards.
The absorption liquid sprayed from the nozzle has certain flow velocity and diffusion angle under different liquid feeding pressures, thereby completing the entrainment and conveying action on external oil gas component gas. The pressure change of the nozzle inlet absorption liquid can realize the adjustment of air guiding quantity, meet the fluctuation requirement of the oil gas quantity discharged by the front-stage process device and avoid excessive pumping of oil gas.
Furthermore, the absorption pipe also comprises a secondary absorption pipe arranged at the lower end of the primary absorption pipe, and guide vanes are arranged in the secondary absorption pipe; the lower end of the secondary absorption pipe extends downwards into the circulating liquid storage tank. In the secondary absorption tube, the gas-liquid two-phase fluid generates secondary disturbance when passing through the guide vanes, so that the non-condensable gas entering the absorption liquid is accelerated to be discharged from the absorption liquid, and the non-condensable gas can be separated from the absorption liquid to become purified gas when the absorption liquid is discharged out of the secondary absorption tube and is discharged outwards.
One side of the circulating liquid storage tank extends outwards along the radial direction beyond the outer wall of the gas-liquid separation barrel, a step part is formed between a top plate of the circulating liquid storage tank and the gas-liquid separation barrel, and a circulating liquid outlet pipe is installed on the step part along the vertical direction. The circulating pump is directly arranged at the top of the circulating liquid storage tank, so that the floor area of the equipment can be effectively reduced.
Furthermore, in order to conveniently monitor the liquid level height of the circulating liquid storage tank, a liquid level meter interface is arranged on the side wall of the circulating liquid storage tank.
In order to facilitate emptying of the absorption liquid in the long-term shutdown state of the device, a drain outlet is arranged at the bottom of the circulating liquid storage tank.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
Fig. 2 is a top view of fig. 1.
Detailed Description
Referring to fig. 1 and 2, in fig. 2, the circulation pump is removed for clarity of illustration.
An oil-gas absorption device comprises a circulating liquid storage tank 5 and a gas-liquid separation barrel 3 arranged at the top of the circulating liquid storage tank 5, wherein the circulating liquid storage tank is communicated with the gas-liquid separation barrel up and down. The circulating liquid sump 5 includes a cylindrical body 58 extending in a vertical direction and a tapered portion 59 installed at a lower end of the cylindrical body 58, and a drain outlet 55 is installed at a bottom of the tapered portion. An upper level gauge port 53 is provided on the side wall of the cylindrical portion 58, a lower level gauge port 54 is provided on the side wall of the tapered portion, and both the upper level gauge port 53 and the lower level gauge port 54 are used for mounting a level gauge.
The gas-liquid separation cylinder 3 is cylindrical, a primary absorption pipe 1 is installed in the gas-liquid separation cylinder 3, and the upper end of the primary absorption pipe 1 extends upwards out of the top of the gas-liquid separation cylinder 3 to form an oil-gas inlet 11. A circulating liquid outlet pipe 52 is arranged on the circulating liquid storage tank, a circulating liquid inlet pipe 12 is arranged on the primary absorption pipe, and the circulating liquid outlet pipe 52 is communicated with the circulating liquid inlet pipe 12 through a circulating pump 6. A purified gas outlet 31 is provided at the top of the gas-liquid separation cylinder. In this embodiment, the circulation pump 6 is a submerged pump.
In order to improve the defoaming effect and reduce the amount of liquid carried by the purified gas outlet, in the present embodiment, a wire mist eliminator 4 is installed in the gas-liquid separation cylinder 3. The wire mesh mist eliminator 4 is a drawer type mist eliminator, a notch 41 is horizontally installed in the gas-liquid separation cylinder, and the wire mesh mist eliminator 41 is detachably held in the notch 41.
The circulation liquid inlet pipe 12 extends into the primary absorption pipe 1, and a nozzle, the jet port of which is directed downward, is installed at the end of the circulation liquid inlet pipe extending into the primary absorption pipe, the nozzle not being shown in the drawing.
In order to improve the absorption effect, in the embodiment, a secondary absorption pipe 2 is arranged at the lower end of a primary absorption pipe 1, and a guide vane is arranged in the secondary absorption pipe; the lower end of the secondary absorption pipe extends downwards into the circulating liquid storage tank. That is, in the present embodiment, the primary absorption tube and the secondary absorption tube together constitute an absorption tube.
One side of the cylindrical body portion 58 of the circulation liquid sump 5 is extended radially outward beyond the outer wall of the gas-liquid separation cylinder so that a stepped portion 561, on which the circulation liquid outlet pipe is installed in the vertical direction, is formed between the ceiling 56 of the circulation liquid sump and the gas-liquid separation cylinder 3.
Claims (8)
1. An oil-gas absorption device is characterized by comprising a circulating liquid storage tank and a gas-liquid separation barrel arranged at the top of the circulating liquid storage tank, wherein the circulating liquid storage tank is communicated with the gas-liquid separation barrel up and down;
an absorption pipe is arranged in the gas-liquid separation cylinder, the upper end of the absorption pipe extends upwards out of the top of the gas-liquid separation cylinder to form an oil-gas inlet, and a purified gas outlet is arranged at the top of the gas-liquid separation cylinder;
the circulating liquid storage tank is provided with a circulating liquid outlet pipe, the absorption pipe is provided with a circulating liquid inlet pipe, and the circulating liquid outlet pipe is communicated with the circulating liquid inlet pipe through a circulating pump.
2. The oil and gas absorption device according to claim 1, wherein a wire mesh mist eliminator is installed in the gas-liquid separation cylinder.
3. The oil and gas absorption device according to claim 2, wherein the wire mesh mist eliminator is a drawer type mist eliminator, and a catching groove is horizontally installed in the gas-liquid separation cylinder, and the wire mesh mist eliminator is detachably caught in the catching groove.
4. The hydrocarbon absorbing device of claim 1,
the absorption pipe comprises a first-stage absorption pipe, the circulating liquid inlet pipe is arranged on the first-stage absorption pipe, the circulating liquid inlet pipe extends into the first-stage absorption pipe, a nozzle is arranged at one end of the circulating liquid inlet pipe extending into the first-stage absorption pipe, and a jet orifice of the nozzle faces downwards.
5. The hydrocarbon absorbing device of claim 4,
the absorption pipe also comprises a secondary absorption pipe arranged at the lower end of the primary absorption pipe, and guide vanes are arranged in the secondary absorption pipe; the lower end of the secondary absorption pipe extends downwards into the circulating liquid storage tank.
6. The hydrocarbon absorbing device of claim 1,
one side of the circulating liquid storage tank extends outwards along the radial direction beyond the outer wall of the gas-liquid separation barrel, a step part is formed between a top plate of the circulating liquid storage tank and the gas-liquid separation barrel, and a circulating liquid outlet pipe is installed on the step part along the vertical direction.
7. The hydrocarbon absorbing device of claim 1,
and a liquid level meter interface is arranged on the side wall of the circulating liquid storage tank.
8. The hydrocarbon absorbing device of claim 1,
a sewage draining outlet is arranged at the bottom of the circulating liquid storage tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120838553.XU CN215939501U (en) | 2021-04-19 | 2021-04-19 | Oil gas absorption device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120838553.XU CN215939501U (en) | 2021-04-19 | 2021-04-19 | Oil gas absorption device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215939501U true CN215939501U (en) | 2022-03-04 |
Family
ID=80566636
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120838553.XU Active CN215939501U (en) | 2021-04-19 | 2021-04-19 | Oil gas absorption device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215939501U (en) |
-
2021
- 2021-04-19 CN CN202120838553.XU patent/CN215939501U/en active Active
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