Absorption and adsorption device for hydrogen sulfide gas in crude oil

Abstract

The utility model discloses an absorption and adsorption device for hydrogen sulfide gas in crude oil, which relates to the field of hydrogen sulfide treatment devices and comprises a treatment barrel, a partition plate is fixedly mounted in the treatment barrel, an NHD solution is poured into the inner side of the treatment barrel, the NHD solution is divided into two parts by the partition plate, and two activated carbon plates are arranged in the treatment barrel. According to the absorption and adsorption device for the hydrogen sulfide gas in the crude oil, the partition plate and the heater are arranged, firstly, one gas inlet pipe is communicated with a crude oil extraction pipeline, gas enters an NDH solution from the gas inlet pipe, then the gas emerges from the solution and penetrates through the interior of the activated carbon plate, and then the gas enters the activated carbon plate; the hydrogen sulfide gas is treated, after a period of time, the crude oil pipeline is communicated with the other gas inlet pipe, the original NDH solution for treating hydrogen sulfide and the activated carbon plate are heated, the previous activity is recovered, and the NDH solution and the activated carbon plate do not need to be replaced repeatedly, so that the use cost can be reduced.

Description

Technical Field

[0001] The utility model relates to the field of hydrogen sulfide processing devices, in particular to a hydrogen sulfide gas absorption and adsorption device in crude oil. Background Art

[0002] Crude oil is a natural mixed hydrocarbon compound directly extracted from the ground. In life, unprocessed oil is often called crude oil. It is produced by the thermal decomposition of organic sulfides in oil. When the ground temperature exceeds 200-250℃, the thermochemical reaction will intensify and produce a large amount of H2S. The hydrocarbons and organic matter in the oil are produced by the high-temperature reduction of sulfates in the reservoir water. Through cracks and other channels, H2S in the sulfate layer in the lower strata will also rise.

[0003] Therefore, H2S needs to be treated during the oil extraction process. Common treatment methods include physical and chemical methods. When using physical methods to treat H2S gas, activated carbon or NHD solution is usually used to adsorb H2S. After a period of adsorption, the NHD solution or activated carbon needs to be replaced, which requires more costs. Utility Model Content

[0004] The main purpose of the utility model is to provide a device for absorbing and adsorbing hydrogen sulfide gas in crude oil, which can effectively solve the problems in the background technology.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a device for absorbing and adsorbing hydrogen sulfide gas in crude oil, comprising a processing barrel, a partition plate is fixedly installed inside the processing barrel, NHD solution is poured inside the processing barrel, and the partition plate divides the NHD solution into two parts, two activated carbon plates are arranged inside the processing barrel, and the two activated carbon plates are respectively located on both sides of the partition plate, a sealing plate is arranged on the top of the processing barrel, and a heating component is arranged inside the processing barrel for heating the activated carbon plate and the NDH solution.

[0006] The heating assembly includes a heater, which is fixed on the lower surface of the sealing plate. An air outlet pipe is installed on the surface of the sealing plate, and the air outlet pipe and the heater are located on one side of the partition plate. A ventilation pipe is installed on the surface of the sealing plate, and the ventilation pipe is located on the other side of the partition plate. A moving assembly is installed on the surface of the sealing plate for controlling the rotation of the sealing plate.

[0007] A heat insulation layer is arranged inside the partition plate.

[0008] The moving assembly comprises a mounting frame, which is fixed on the surface of the processing barrel. An electric push rod is installed on the inner side of the mounting frame, a motor is installed on the lower end of the electric push rod, and the output shaft of the motor is fixed at the center position of the sealing plate.

[0009] A sealing ring is fixedly mounted on the lower surface of the sealing plate, and the sealing ring abuts against the interior of the processing barrel.

[0010] Two support frames are fixedly installed inside the processing barrel, and two activated carbon plates are placed on the upper surfaces of the support frames.

[0011] Compared with the prior art, the utility model has the following beneficial effects:

[0012] In the utility model, by setting a partition plate, a processing barrel and a heater, firstly, one of the air inlet pipes is connected to the pipeline for crude oil extraction, and the gas enters the interior of the NDH solution from the air inlet pipe, and then the gas emerges from the interior of the solution and passes through the interior of the activated carbon plate to process the hydrogen sulfide gas. After a period of time, the crude oil pipeline is connected to another air inlet pipe, and the NDH solution and the activated carbon plate originally used to process the hydrogen sulfide are heated to restore their previous activity. In this way, the treatment is repeated alternately, and there is no need to repeatedly replace the NDH solution and the activated carbon plate, which can reduce the cost of use.

[0013] In the utility model, an electric push rod and a motor are provided, the electric push rod is started to pull up the motor and the sealing plate, and then the motor is started to rotate the sealing plate 90 degrees, and then the sealing plate cover is returned to the initial position. The operating structure is simple and convenient, and it is processed in a modular way, so it is convenient to inspect and repair the electric push rod or the motor separately. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the overall structure of a device for absorbing and adsorbing hydrogen sulfide gas in crude oil according to the utility model;

[0015] Figure 2 This is a schematic diagram of the heater position of a device for absorbing and adsorbing hydrogen sulfide gas in crude oil according to the utility model;

[0016] Figure 3 This is a schematic diagram of the structure of the support frame of a device for absorbing and adsorbing hydrogen sulfide gas in crude oil according to the utility model;

[0017] Figure 4 The utility model is a schematic diagram of the structure of the mounting frame position of a device for absorbing and adsorbing hydrogen sulfide gas in crude oil.

[0018] In the figure: 1. treatment barrel; 2. partition plate; 3. activated carbon plate; 4. sealing plate; 5. heater; 6. exhaust pipe; 7. ventilation pipe; 8. mounting frame; 9. electric push rod; 10. motor; 11. sealing ring; 12. support frame. DETAILED DESCRIPTION

[0019] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0020] like Figure 1-4 As shown, a device for absorbing and adsorbing hydrogen sulfide gas in crude oil comprises a treatment barrel 1, a partition plate 2 is fixedly installed inside the treatment barrel 1, the partition plate 2 divides the treatment barrel 1 into two areas, an NHD solution is poured inside the treatment barrel 1, the partition plate 2 divides the NHD solution into two parts, two activated carbon plates 3 are arranged inside the treatment barrel 1, the activated carbon plates 3 are located above the NDH solution, an air inlet pipe is arranged on the surface of the treatment barrel 1, the air outlet end of the air inlet pipe is placed inside the NHD solution, the two activated carbon plates 3 are respectively located on both sides of the partition plate 2, a sealing plate 4 is arranged on the top of the treatment barrel 1, and a heating component is arranged inside the treatment barrel 1 for heating the activated carbon plates 3 and the NDH solution.

[0021] First, one of the air inlet pipes is connected to the pipeline for crude oil extraction, and the gas enters the NDH solution from the air inlet pipe to treat a portion of the hydrogen sulfide gas. Then the gas emerges from the solution and passes through the activated carbon plate 3 to further treat the hydrogen sulfide gas. After a period of treatment, the crude oil pipeline is connected to another air inlet pipe, and the hydrogen sulfide gas is treated in the same way. At this time, the NDH solution and activated carbon plate 3 that originally treated hydrogen sulfide are treated by the heating component to restore their previous activity. This alternating and repeated treatment does not require repeated replacement of the NDH solution and the activated carbon plate 3, which can reduce the cost of use.

[0022] The heating assembly includes a heater 5, which is fixed on the lower surface of the sealing plate 4. An air outlet pipe 6 is installed on the surface of the sealing plate 4, and the air outlet pipe 6 and the heater 5 are located on one side of the partition plate 2. A ventilation pipe 7 is installed on the surface of the sealing plate 4, and the ventilation pipe 7 is located on the other side of the partition plate 2. A moving assembly is installed on the surface of the sealing plate 4 for controlling the rotation of the sealing plate 4.

[0023] Since hydrogen sulfide will turn into gas and overflow when the NDH solution and the activated carbon plate 3 are heated, the hydrogen sulfide gas needs to be uniformly collected and processed through the outlet pipe 6, or reused, and the natural gas can overflow from the inside of the ventilation pipe 7.

[0024] A heat insulating layer is provided inside the partition plate 2 to prevent heat transfer from affecting the adsorption of hydrogen sulfide gas by the NDH solution on the other side.

[0025] The moving assembly includes a mounting frame 8, which is fixed on the surface of the processing barrel 1. An electric push rod 9 is installed on the inner side of the mounting frame 8. A motor 10 is installed on the lower end of the electric push rod 9. The output shaft of the motor 10 is fixed at the center position of the sealing plate 4. When the position of the heater 5 needs to be replaced, the electric push rod 9 is first started to pull up the motor 10 and the sealing plate 4. Then the motor 10 is started to rotate the sealing plate 4 90°, and then the sealing plate 4 is covered back to its original position. The operating structure is simple and convenient, and is processed in a modular manner, which is convenient for the electric push rod 9 or the motor 10 to be inspected and repaired separately.

[0026] A sealing ring 11 is fixedly mounted on the lower surface of the sealing plate 4 . The sealing ring 11 abuts against the interior of the processing barrel 1 . The sealing ring 11 has a certain deformation capability and can be squeezed into the interior of the processing barrel 1 to ensure sealing.

[0027] Two support frames 12 are fixedly installed inside the treatment barrel 1, and two activated carbon plates 3 are placed on the upper surface of the support frames 12. When the activated carbon plates 3 need to be replaced, they can be directly taken out, which is convenient to operate.

[0028] It should be noted that the utility model is a device for absorbing and adsorbing hydrogen sulfide gas in crude oil. When in use, first, one of the air inlet pipes is connected to the pipeline for crude oil extraction, and the gas enters the interior of the NDH solution from the air inlet pipe to treat a portion of the hydrogen sulfide gas. Then the gas emerges from the interior of the solution and passes through the interior of the activated carbon plate 3 to further treat the hydrogen sulfide gas. After a period of treatment, the crude oil pipeline is connected to another air inlet pipe, and the hydrogen sulfide gas is treated in the same way. At this time, the electric push rod 9 is started to pull up the motor 10 and the sealing plate 4. Then the motor 10 is started to rotate the sealing plate 4 90°, and then the sealing plate 4 is covered back to its initial position. The heater 5 heats the NDH solution and the activated carbon plate 3 to restore their previous activity. This alternating and repeated treatment does not require repeated replacement of the NDH solution and the activated carbon plate 3, which can reduce the cost of use. Hydrogen sulfide will become gas and overflow from the inside of the outlet pipe 6.

[0029] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A device for absorbing and adsorbing hydrogen sulfide gas in crude oil, comprising a treatment barrel (1), characterized in that: A partition plate (2) is fixedly installed inside the treatment barrel (1), an NHD solution is poured inside the treatment barrel (1), and the partition plate (2) divides the NHD solution into two parts. Two activated carbon plates (3) are arranged inside the treatment barrel (1), and the two activated carbon plates (3) are respectively located on both sides of the partition plate (2). A sealing plate (4) is arranged on the top of the treatment barrel (1), and a heating component is arranged inside the treatment barrel (1) for heating the activated carbon plates (3) and the NDH solution.

2. The device for absorbing and adsorbing hydrogen sulfide gas in crude oil according to claim 1, characterized in that: The heating component comprises a heater (5), the heater (5) being fixed on the lower surface of the sealing plate (4), an air outlet pipe (6) being installed on the surface of the sealing plate (4), the air outlet pipe (6) and the heater (5) being located on one side of the partition plate (2), a ventilation pipe (7) being installed on the surface of the sealing plate (4), the ventilation pipe (7) being located on the other side of the partition plate (2), and a moving component being installed on the surface of the sealing plate (4) for controlling the rotation of the sealing plate (4).

3. The device for absorbing and adsorbing hydrogen sulfide gas in crude oil according to claim 2, characterized in that: A heat insulation layer is provided inside the partition plate (2).

4. The device for absorbing and adsorbing hydrogen sulfide gas in crude oil according to claim 2, characterized in that: The moving assembly comprises a mounting frame (8), the mounting frame (8) being fixed on the surface of the processing barrel (1), an electric push rod (9) being installed on the inner side of the mounting frame (8), a motor (10) being installed at the lower end of the electric push rod (9), and an output shaft of the motor (10) being fixed at the center position of the sealing plate (4).

5. The device for absorbing and adsorbing hydrogen sulfide gas in crude oil according to claim 1, characterized in that: A sealing ring (11) is fixedly mounted on the lower surface of the sealing plate (4), and the sealing ring (11) abuts against the interior of the processing barrel (1).

6. The device for absorbing and adsorbing hydrogen sulfide gas in crude oil according to claim 5, characterized in that: Two support frames (12) are fixedly installed inside the treatment barrel (1), and two activated carbon plates (3) are placed on the upper surfaces of the support frames (12).

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