Separating and dosing device for oilfield associated gas

Abstract

The utility model discloses an oilfield associated gas separating and dosing device, and particularly relates to the technical field of oilfield associated gas separating and dosing, which comprises a dosing tank, the upper end of the dosing tank is communicated with an exhaust pipe, the exhaust pipe is communicated with an oilfield associated gas separating device, and one side of the dosing tank is communicated with an associated gas conveying pipe; a diluting and stirring device capable of diluting a desulfurizing agent is arranged on one side of the dosing tank; the diluting and stirring device comprises a stirring barrel, a supporting frame is fixedly arranged at the upper end of the stirring barrel, a rotating motor is fixedly arranged at the upper end of the supporting frame, the output end of the rotating motor penetrates through the inner side of the supporting frame, a rotating shaft is fixedly arranged at the output end of the rotating motor, and a plurality of stirring blades are fixedly arranged on the outer surface of the rotating shaft; an agent spraying device capable of spraying a desulfurizing agent is arranged on the inner side of the dosing tank. Through the diluting and stirring device and the agent spraying device, a desulfurizing agent can be stirred and diluted and sprayed into the dosing tank, so that the desulfurizing efficiency of the oilfield associated gas is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of associated gas separation and chemical addition in oil fields, and more specifically, to an associated gas separation and chemical addition device for oil fields. Background Art

[0002] Associated gas in oil fields, also known as oil field gas, usually refers to natural gas associated with petroleum. Its main components are low-molecular alkanes such as methane and ethane, and there are also certain amounts of propane, butane, pentane, etc. In the surface gathering and transportation project of oil and gas fields, associated gas is used as the gas supply resource for heat source devices such as heating furnaces. However, the liquid-carrying rate in associated gas is too high, the impurity content is large, which reduces the fuel quality and seriously affects the normal operation of combustion devices. Therefore, it is necessary to effectively treat the impurities in the associated gas and then use the associated gas separation device. Before separation, the associated gas in oil fields needs to be desulfurized. Desulfurization is to improve the stripping effect, use purified dry gas as the stripping gas, and use the composite desulfurizer in the desulfurization unit to remove H2S and mercaptans, so as to achieve the purpose of canceling the caustic washing unit and avoiding the consumption of caustic liquor and the generation of caustic sludge from the source. For this reason, an associated gas separation and chemical addition device for oil fields is proposed to add medicine and desulfurize the associated gas in oil fields before separation.

[0003] Most of the existing associated gas separation and chemical addition devices in oil fields use solid desulfurizer, and the associated gas in oil fields passes through the solid desulfurizer for desulfurization. Its efficiency is slow, the desulfurization effect is not ideal, and there are impurities in the associated gas in oil fields that are easy to block the gaps of the desulfurizer. Summary of the Utility Model

[0004] In order to overcome the above defects of the prior art, an embodiment of the utility model provides an associated gas separation and chemical addition device for oil fields, and the technical problem to be solved is: the desulfurization effect is not ideal and the efficiency is slow.

[0005] To achieve the above object, the utility model provides the following technical solution: an associated gas separation and chemical addition device for oil fields, including a chemical addition tank:

[0006] The upper end of the chemical addition tank is communicated with an exhaust pipe, the exhaust pipe is communicated with the associated gas separation device in the oil field, and one side of the chemical addition tank is communicated with an associated gas conveying pipe;

[0007] One side of the chemical addition tank is provided with a dilution and stirring device capable of diluting the desulfurizer, which is used for stirring and diluting the desulfurizer and conveying the diluted desulfurizer into the chemical addition tank;

[0008] The dilution and stirring device includes a stirring barrel, the upper end of the stirring barrel is fixedly provided with a support frame, the upper end of the support frame is fixedly provided with a rotating motor, the output end of the rotating motor penetrates through the inner side of the support frame, the output end of the rotating motor is fixedly provided with a rotating shaft, and the outer surface of the rotating shaft is fixedly provided with a plurality of stirring blades;

[0009] Inside the chemical addition tank, there is a chemical spraying device capable of spraying desulfurizer, which is used to spray desulfurizer to promote the desulfurization of associated oilfield gas.

[0010] In a preferred embodiment, support feet are fixedly provided at the lower end of the stirring barrel.

[0011] In a preferred embodiment, a water pipe is connected to the lower end of the stirring barrel, a water pump is provided in the middle of the water pipe, and the water pump is fixedly arranged on one side of the chemical addition tank through a bracket.

[0012] In a preferred embodiment, a filter plate is fixedly provided inside the stirring barrel, and the filter plate is located at the lower end of the rotating shaft.

[0013] In a preferred embodiment, the chemical spraying device includes a water distributor, a fixing block is fixedly provided on the outer surface of the water distributor, and the outermost end of the fixing block is fixedly connected to the inner wall of the chemical addition tank.

[0014] In a preferred embodiment, the water distributor and the fixing block are located inside the chemical addition tank, and a spraying head is fixedly provided at the output end of the water distributor.

[0015] In a preferred embodiment, a drain pipe is connected to one side of the lower end of the chemical addition tank.

[0016] Technical effects and advantages of the present utility model:

[0017] 1. The present utility model can mix the desulfurizer and water in the stirring barrel through the rotating motor, rotating shaft and stirring blades, so as to achieve the dilution effect. After stirring and diluting, the liquid desulfurizer is pumped by the water pump and the water pipe. During the pumping process, the filter plate filters the solid impurities and undiluted solid desulfurizer in the liquid desulfurizer, so as to achieve the dilution effect of the solid desulfurizer and transport the liquid desulfurizer to the chemical spraying device, thereby improving efficiency and reducing manual operation.

[0018] 2. The present utility model transports the liquid desulfurizer to the water distributor through the water pipe, the water distributor shunts the liquid desulfurizer, and sprays it out by using the spraying head. When the associated gas delivery pipe transports the associated oilfield gas to the chemical addition tank, the spraying head sprays the liquid desulfurizer above the associated oilfield gas, so as to comprehensively achieve desulfurization and improve the desulfurization effect. Description of the Drawings

[0019] In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only exemplary. For those of ordinary skill in the art, without creative efforts, other implementation drawings can also be obtained according to the provided drawings.

[0020] The structures, ratios, sizes, etc. illustrated in this specification are only used to cooperate with the content disclosed in the specification for those familiar with this technology to understand and read, and are not used to limit the implementation conditions of the present utility model. Therefore, they do not have substantial technical significance. Any modification of the structure, change in the proportional relationship, or adjustment of the size, without affecting the effects that the present utility model can produce and the purposes that can be achieved, should still fall within the scope covered by the technical content disclosed in the present utility model.

[0021] Figure 1 It is a schematic diagram of the overall structure of the present utility model.

[0022] Figure 2 It is a schematic diagram of the side-sectional structure of the present utility model.

[0023] Figure 3 It is a schematic diagram of the structure of the dilution and stirring device of the present utility model.

[0024] Figure 4 It is a schematic diagram of the structure of the chemical agent spraying device of the present utility model.

[0025] The reference numerals in the drawings are: 1, chemical agent adding tank; 2, dilution and stirring device; 3, chemical agent spraying device; 4, exhaust pipe; 5, drain pipe; 6, associated gas conveying pipe; 21, stirring barrel; 22, support feet; 23, water pipe; 24, water pump; 25, filter plate; 26, support frame; 27, rotating motor; 28, rotating shaft; 29, stirring blades; 31, water distributor; 32, fixing block; 33, spraying head. Detailed implementation manners

[0026] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art in the field of associated gas separation and chemical agent addition in oil fields of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0027] As Figure 1 and 2 shown, the present utility model provides an associated gas separation and chemical agent addition device for oil fields, including a chemical agent adding tank 1: an exhaust pipe 4 is connected to the upper end of the chemical agent adding tank 1, the exhaust pipe 4 is connected to the associated gas separation device of the oil field, an associated gas conveying pipe 6 is connected to one side of the chemical agent adding tank 1, and a drain pipe 5 is connected to one side of the lower end of the chemical agent adding tank 1.

[0028] In order to improve efficiency and reduce manual operation, the liquid desulfurizer is transported into the chemical spraying device 3. On one side of the chemical addition tank 1, there is a dilution and stirring device 2 capable of diluting the desulfurizer, which is used to stir and dilute the desulfurizer and transport the diluted desulfurizer into the chemical addition tank 1;

[0029] As Figure 3 shown, the dilution and stirring device 2 includes a stirring barrel 21. At the upper end of the stirring barrel 21, there is a fixed support frame 26. At the upper end of the support frame 26, there is a rotating motor 27. The output end of the rotating motor 27 penetrates the inner side of the support frame 26. The output end of the rotating motor 27 is fixed with a rotating shaft 28. On the outer surface of the rotating shaft 28, there are a plurality of stirring blades 29. At the lower end of the stirring barrel 21, there are fixed support feet 22. At the lower end of the stirring barrel 21, there is a communicating water pipe 23. In the middle of the water pipe 23, there is a water pump 24. The water pump 24 is fixedly arranged on one side of the chemical addition tank 1 through a bracket. Inside the stirring barrel 21, there is a filter plate 25. The filter plate 25 is located at the lower end of the rotating shaft 28. Through the rotating motor 27, the rotating shaft 28 and the stirring blades 29, the desulfurizer and water in the stirring barrel 21 can be mixed to achieve the dilution effect. When the stirring and dilution are completed, the liquid desulfurizer is pumped by the water pump 24 and the water pipe 23. During the pumping process, the filter plate 25 filters the solid impurities and undiluted solid desulfurizer in the liquid desulfurizer, so as to achieve the dilution effect of the solid desulfurizer and transport the liquid desulfurizer into the chemical spraying device 3, thereby improving efficiency and reducing manual operation.

[0030] Furthermore, in order to comprehensively desulfurize the associated gas in the oilfield and improve the desulfurization effect, inside the chemical addition tank 1, there is a chemical spraying device 3 capable of spraying the desulfurizer, which is used to spray the desulfurizer to promote the desulfurization of the associated gas in the oilfield;

[0031] As Figure 4 shown, the chemical spraying device 3 includes a water distributor 31. On the outer surface of the water distributor 31, there is a fixed block 32. The outermost end of the fixed block 32 is fixedly connected to the inner wall of the chemical addition tank 1. The water distributor 31 and the fixed block 32 are located inside the chemical addition tank 1. The output end of the water distributor 31 is fixed with a spray head 33. The liquid desulfurizer is transported into the water distributor 31 through the water pipe 23. The water distributor 31 distributes the liquid desulfurizer, and it is sprayed out by the spray head. When the associated gas pipeline 6 transports the associated gas in the oilfield into the chemical addition tank 1, the liquid desulfurizer is sprayed above the associated gas in the oilfield by the spray head 33, so as to comprehensively achieve desulfurization and improve the desulfurization effect.

[0032] The working principle is as follows: When the present utility model is in use, the associated gas in the oilfield is transported into the present utility model through the associated gas conveying pipe 6. The dilution and stirring device 2 is used to mix and dilute the solid desulfurizer and water and transport them into the chemical agent spraying device 3. The chemical agent spraying device 3 sprays the liquid desulfurizer, thereby achieving a comprehensive desulfurization effect, improving the desulfurization effect of the present utility model, and reducing the operation of manually diluting the desulfurizer. The desulfurized associated gas in the oilfield is discharged into the oilfield associated gas separation device through the exhaust pipe 4 for separation.

[0033] In addition, it is worth noting that the control processes of electrical equipment such as the rotating motor 27 and the water pump 24 in the present utility model are all realized by the controller. The control circuit and structure of this controller belong to mature existing technologies, so they will not be further described in the present utility model.

[0034] Moreover, the exhaust pipe 4 of the present utility model is communicated with the input end of the oilfield associated gas separation device. The oilfield associated gas separation device is a mature existing technology, so it will not be further described in the present utility model either.

[0035] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. An oilfield associated gas separation and chemical addition device, comprising a chemical addition tank (1), characterized in that: The upper end of the chemical addition tank (1) is communicated with an exhaust pipe (4), the exhaust pipe (4) is communicated with the oilfield associated gas separation device, and one side of the chemical addition tank (1) is communicated with an associated gas delivery pipe (6); One side of the chemical addition tank (1) is provided with a dilution and stirring device (2) capable of diluting the desulfurizer, which is used for stirring and diluting the desulfurizer and transporting the diluted desulfurizer into the chemical addition tank (1); The dilution and stirring device (2) includes a stirring barrel (21), the upper end of the stirring barrel (21) is fixedly provided with a support frame (26), the upper end of the support frame (26) is fixedly provided with a rotating motor (27), the output end of the rotating motor (27) penetrates the inner side of the support frame (26), the output end of the rotating motor (27) is fixedly provided with a rotating shaft (28), and the outer surface of the rotating shaft (28) is fixedly provided with a plurality of stirring blades (29); The inner side of the chemical addition tank (1) is provided with a chemical agent spraying device (3) capable of spraying the desulfurizer, which is used for spraying the desulfurizer to promote the desulfurization of the oilfield associated gas.

2. The oilfield associated gas separation and chemical addition device according to claim 1, wherein: The lower end of the stirring barrel (21) is fixedly provided with support feet (22).

3. The oilfield associated gas separation and chemical addition device according to claim 1, characterized in that: The lower end of the stirring barrel (21) is communicated with a water pipe (23), and a water pump (24) is arranged in the middle of the water pipe (23), and the water pump (24) is fixedly arranged on one side of the chemical addition tank (1) through a bracket.

4. The oilfield associated gas separation and chemical addition device according to claim 1, characterized in that: A filter plate (25) is fixedly arranged inside the stirring barrel (21), and the filter plate (25) is located below the rotating shaft (28).

5. A gas separation and chemical addition device for associated gas in oil fields according to claim 1, characterized in that: The chemical agent spraying device (3) includes a water distributor (31), the outer surface of the water distributor (31) is fixedly provided with a fixing block (32), and the outermost end of the fixing block (32) is fixedly connected with the inner wall of the chemical addition tank (1).

6. The oilfield associated gas separation and chemical addition device according to claim 5, characterized in that: The water distributor (31) and the fixing block (32) are located inside the chemical addition tank (1), and the output end of the water distributor (31) is fixedly provided with a spraying head (33).

7. The oilfield associated gas separation and chemical addition device according to claim 1, characterized in that: One side of the lower end of the chemical addition tank (1) is communicated with a drain pipe (5).

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