CN220450119U - Decarbonization device for pretreatment of natural gas - Google Patents

Abstract

The utility model relates to the technical field of gas decarburization, in particular to a decarburization device for natural gas pretreatment; comprising the following steps: the decarbonization tower body and drying mechanism, decarbonization tower body bottom is provided with air inlet mechanism, drying mechanism is provided with the blast pipe, drying mechanism includes dry casing, dry casing internally mounted has the backup pad, and backup pad surface one side is equipped with the through-hole in advance, drying mechanism still includes the desiccator, and the desiccator is fixed in the backup pad top through the adapter sleeve. This decarbonization device for natural gas pretreatment is provided with drying mechanism for carry out drying work to the natural gas that the decarbonization was accomplished, thereby clear away the moisture in the natural gas, and the design of cooperation spoiler improves the contact time of natural gas and desiccator, thereby improves the drying effect to the natural gas, and the desiccator adopts the block to connect, makes things convenient for the staff to carry out dismouting change.

Description

Decarbonization device for pretreatment of natural gas

Technical Field

The utility model relates to the technical field of gas decarburization, in particular to a decarburization device for pretreatment of natural gas.

Background

The content of carbon dioxide in the natural gas quality standard is required to be not more than 3%, the carbon dioxide has very strong corrosiveness to steel after being blended into water, and if the pH value is the same, the acidity ratio of the carbon dioxide is also higher, the corrosion degree of the carbon dioxide to the steel is also higher under the condition, the natural gas extracted from the oil-gas field mainly consists of hydrocarbon and various impurity gases, and the main components of the natural gas are methane, CO2 gas and the like, so that efficient decarburization of the extracted natural gas becomes a key for reasonably utilizing natural gas resources.

Through retrieval, a decarbonization device for natural gas pretreatment for natural gas power generation disclosed in the patent number of 202220298955.X comprises a packing tower, wherein a support frame is arranged at the bottom of the packing tower, an air inlet pipe is arranged at one side of the packing tower and communicated with the inside of the packing tower, a collecting cover is arranged below the inside of the packing tower, a first pore plate is arranged above the collecting cover, a first structured packing is arranged above the first pore plate, a first spraying mechanism is arranged above the first structured packing, and a circulating mechanism is arranged at one side of the packing tower;

in the comparison document, the absorption liquid is sprayed by the first spraying mechanism and the second spraying mechanism to absorb carbon dioxide in natural gas, so that moisture remains in the natural gas after decarburization, if the natural gas is not subjected to drying treatment, if water exists in the natural gas pipeline when the natural gas containing the moisture is conveyed through the natural gas pipeline, the corrosion of the inner wall of the pipeline can be caused, and hydrate can be formed, so that the pipeline is blocked and even accidents are caused.

Therefore, how to provide a decarbonization device for pretreatment of natural gas having a drying function after decarbonization has been a technical problem to be solved by those skilled in the art.

Disclosure of Invention

The utility model aims to provide a decarbonization device with a drying function for pretreatment of natural gas after decarbonization.

In order to achieve the above object, the present utility model provides a decarbonization device for pretreatment of natural gas, comprising: the decarbonization tower body and drying mechanism, decarbonization tower body bottom is provided with air inlet mechanism, drying mechanism is provided with the blast pipe, drying mechanism includes dry casing, and dry casing connects at decarbonization tower body top, dry casing internally mounted has the backup pad, and backup pad surface one side is equipped with the through-hole in advance, drying mechanism still includes the dry board, and the dry board is fixed in the backup pad top through the adapter sleeve to the adapter sleeve corresponds to be installed on backup pad up end and dry casing top inner wall.

The natural gas to be treated enters the decarburization tower body through the air inlet mechanism to be treated, the treated gas is conveyed to the outside through the exhaust pipe, the drying shell is connected with the decarburization tower body in a clamping way and is fixed through bolts, and the sealing ring is arranged at the joint of the drying shell and the decarburization tower body.

Preferably, the air inlet mechanism comprises an air inlet pipe, the air inlet pipe is arranged on one side of the decarburization tower body, the air inlet mechanism further comprises a guide cover, the guide cover is arranged inside the decarburization tower body, and the horizontal height of the guide cover is lower than that of the air inlet pipe.

The electromagnetic valve is preset on the outer surface of the air inlet pipe, the guide cover plays a role in guiding and guiding the flow of natural gas, and the guide pipe for the flow of absorption liquid is preset on the lower end surface of the guide cover.

Preferably, the decarburization section is provided inside the decarburization tower, and the decarburization section includes a first decarburization mechanism and a second decarburization mechanism, and the first decarburization mechanism and the second decarburization mechanism are provided in this order from top to bottom inside the decarburization tower.

Carbon dioxide in the natural gas is contacted with the absorption liquid twice through the first decarburization mechanism and the second decarburization mechanism to react, so that the purity of decarburization of the natural gas is improved.

Preferably, the first decarbonization mechanism includes a first spray assembly, the first decarbonization mechanism further includes a first structured packing, and the first structured packing is disposed below the first spray assembly, the first decarbonization mechanism further includes a first orifice plate, and the first orifice plate is disposed below the first structured packing.

The first regular packing is one of corrugated packing, grid packing and pulse packing, the first spraying component comprises a shunt pipe and a spray head, one end of the shunt pipe is connected with an external absorption liquid pipeline, the spray head is an atomization spray head, and natural gas uniformly flows upwards due to the design of the first pore plate.

Preferably, the second decarbonization mechanism includes a second spray assembly, the second decarbonization mechanism further includes a bulk filler disposed below the second spray assembly, the second decarbonization mechanism further includes a second structured packing disposed below the bulk filler, the second decarbonization mechanism further includes a second orifice plate disposed below the second structured packing.

The bulk packing is one of Raschig ring packing, saddle packing, net packing and cross ring packing, and the second spraying assembly, the second regular packing and the second pore plate have the same structure as the first spraying assembly, the first regular packing and the first pore plate.

Preferably, a defoaming net is arranged between the decarburizing part and the drying mechanism, and the defoaming net is arranged above the first spraying assembly.

The design of the defoaming net adopts the structure existing in the market in the field, foam can be formed at a natural gas outlet in the process of upward movement of natural gas, the design of the defoaming net plays a role in filtering foam, and the natural gas is discharged after decarburization conveniently.

Preferably, the drying plates are arranged at equal intervals, spoilers are arranged between the adjacent drying plates, and the drying plates are connected with the connecting sleeves in a clamping manner.

The design of desiccator is used for playing the drying effect to the natural gas that the decarbonization was accomplished to the purpose of residual moisture in the realization got rid of the natural gas, the flow rate of natural gas can be slowed down in the design of spoiler, thereby improves the contact time with between the desiccator, the design that the block was connected makes things convenient for the staff to dismouting to the desiccator, and fixes through the bolt between desiccator and the adapter sleeve.

Preferably, the circulation mechanism comprises a temporary storage chamber, the temporary storage chamber is preset at the bottom of the decarburization tower body, the circulation mechanism further comprises a circulating water pump, the circulating water pump is arranged on one side of the outer surface of the decarburization tower body, one end of the circulating water pump is connected with the temporary storage chamber through a pipeline, the other end of the circulating water pump is provided with a liquid channel, the tail end of the liquid channel is connected with a first spraying assembly and a second spraying assembly, the circulation mechanism further comprises an overflow pipe and a drain pipe, the overflow pipe is arranged on one side of the outer surface of the temporary storage chamber, and the drain pipe is arranged at the bottom of the temporary storage chamber.

The design of the circulating mechanism enables the absorption liquid to achieve the purpose of recycling, and the environmental protection of the device is reflected.

The beneficial effects of the utility model are as follows:

when the device is used, the drying mechanism is arranged and used for drying the decarbonized natural gas, so that the moisture in the natural gas is removed, the contact time of the natural gas and the drying plate is prolonged by matching with the design of the spoiler, the drying effect of the natural gas is improved, and the drying plate is connected by adopting a clamping type, so that the device is convenient for workers to assemble, disassemble and replace.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view showing the structure of the decarburization tower according to the embodiment of the present utility model in front view;

FIG. 2 is an enlarged schematic view of the drying mechanism according to the embodiment of the present utility model;

fig. 3 is a schematic perspective view of a connecting sleeve according to an embodiment of the present utility model.

Part name

1. A decarburization tower; 2. an air inlet mechanism; 201. an air inlet pipe; 202. a guide cover; 3. an exhaust pipe; 4. a first decarbonization mechanism; 401. a first spray assembly; 402. a first structured packing; 403. a first orifice plate; 5. a second decarburization mechanism; 501. a second spray assembly; 502. a bulk filler; 503. a second structured packing; 504. a second orifice plate; 6. a defoaming net; 7. a drying mechanism; 701. drying the shell; 702. a support plate; 703. a through hole; 704. a drying plate; 705. connecting sleeves; 706. a spoiler; 8. a circulation mechanism; 801. a temporary storage chamber; 802. a circulating water pump; 803. a liquid channel; 804. an overflow pipe; 805. and (5) a water drain pipe.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present utility model and should not be construed as limiting the utility model.

In the description of the present utility model, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present utility model and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model. Furthermore, in the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

Referring to fig. 1 to 3, the present utility model provides a decarbonizing apparatus for pretreatment of natural gas, comprising: the decarburization tower body 1 and the drying mechanism 7, the air inlet mechanism 2 is arranged at the bottom of the decarburization tower body 1, the drying mechanism 7 is provided with the exhaust pipe 3, the drying mechanism 7 comprises a drying shell 701, the drying shell 701 is connected to the top of the decarburization tower body 1, a supporting plate 702 is arranged in the drying shell 701, a through hole 703 is preset in one side of the outer surface of the supporting plate 702, the drying mechanism 7 further comprises a drying plate 704, the drying plate 704 is fixed above the supporting plate 702 through a connecting sleeve 705, the connecting sleeve 705 is correspondingly arranged on the upper end surface of the supporting plate 702 and the inner wall of the top of the drying shell 701, three drying plates 704 are arranged at equal intervals, a spoiler 706 is arranged between every two adjacent drying plates 704, and the drying plates 704 are in clamping connection with the connecting sleeve 705;

in this embodiment, firstly, the natural gas to be treated enters the decarburization tower 1 through the air inlet mechanism 2, secondly, the natural gas is decarburized through the decarburization part in the decarburization tower 1, the natural gas after decarburization flows upward and enters the drying housing 701 to be dried, finally, the natural gas after drying is conveyed to the outside through the exhaust pipe 3, when the natural gas enters the drying housing 701, firstly, the natural gas flows upward through the through holes 703 preset on the outer surface of the supporting plate 702, secondly, the residual moisture in the natural gas is cleaned through the drying plate 704, and the contact time of the natural gas and the drying plate 704 is improved by matching with the design of the spoiler 706, so that the drying effect of the natural gas is improved, when the natural gas is not used, the drying housing 701 can be detached from the top end of the decarburization tower 1, and secondly, the drying plate is detached from the connecting sleeve 705, so that the drying plate 704 is replaced by a worker.

Further, the air inlet mechanism 2 comprises an air inlet pipe 201, the air inlet pipe 201 is arranged at one side of the decarburization tower body 1, the air inlet mechanism 2 further comprises a guide cover 202, the guide cover 202 is arranged inside the decarburization tower body 1, and the horizontal height of the guide cover 202 is lower than that of the air inlet pipe 201;

in the present embodiment, when the natural gas enters the decarburization tower 1 through the inlet section 2, the natural gas enters the decarburization tower 1 through the inlet section 201, and then flows upward along the inside of the nacelle 202.

Further, the decarbonization section is arranged inside the decarbonization tower 1, and comprises a first decarbonization mechanism 4 and a second decarbonization mechanism 5, and the first decarbonization mechanism 4 and the second decarbonization mechanism 5 are arranged inside the decarbonization tower 1 from top to bottom in sequence, the first decarbonization mechanism 4 comprises a first spraying assembly 401, the first decarbonization mechanism 4 further comprises a first structured packing 402, and the first structured packing 402 is arranged below the first spraying assembly 401, the first decarbonization mechanism 4 further comprises a first orifice plate 403, and the first orifice plate 403 is arranged below the first structured packing 402, the second decarbonization mechanism 5 comprises a second spraying assembly 501, the second decarbonization mechanism 5 further comprises a structured packing 502, and the structured packing 502 is arranged below the second spraying assembly 501, the second decarbonization mechanism 5 further comprises a second structured packing 503, and the second structured packing 503 is arranged below the structured packing 502, the second decarbonization mechanism 5 further comprises a second orifice plate 504, and the second orifice plate 504 is arranged below the second structured packing 503;

in this embodiment, when the natural gas flows upward, the initial decarbonization process may be performed on the natural gas by the second decarbonization mechanism 5, firstly, the gas flows upward uniformly through the second orifice plate 504, and secondly, the absorption liquid is sprayed by the second spraying component 501, so that when the natural gas enters the inside of the second structured packing 503 and the bulk packing 502, the absorption liquid is fully contacted and reacted, and thus, the carbon dioxide in the natural gas is primarily removed, and when the initial decarbonization process of the natural gas is completed, the natural gas continues to flow upward uniformly through the first orifice plate 403, and secondly, the absorption liquid is sprayed by the first spraying component 401, so that when the natural gas enters the inside of the first structured packing 402, the absorption liquid is fully contacted and reacted, and thus, the carbon dioxide in the natural gas is further removed, and the decarbonization effect of the device is reflected.

Further, a defoaming net 6 is arranged between the decarburizing part and the drying mechanism 7, and the defoaming net 6 is arranged above the first spraying assembly 401;

in the present embodiment, after the natural gas decarburization step is completed, foam in the natural gas is filtered by the foam removing net 6 before entering the drying mechanism 7, and the natural gas after the filtration continues to flow upward to enter the drying mechanism 7.

Further, the circulating mechanism 8 comprises a temporary storage chamber 801, the temporary storage chamber 801 is preset at the bottom of the decarburization tower body 1, the circulating mechanism 8 further comprises a circulating water pump 802, the circulating water pump 802 is arranged on one side of the outer surface of the decarburization tower body 1, one end of the circulating water pump 802 is connected with the temporary storage chamber 801 through a pipeline, a liquid channel 803 is arranged at the other end of the circulating water pump 802, the tail end of the liquid channel 803 is connected with the first spraying assembly 401 and the second spraying assembly 501, the circulating mechanism 8 further comprises an overflow pipe 804 and a drain pipe 805, the overflow pipe 804 is arranged on one side of the outer surface of the temporary storage chamber 801, and the drain pipe 805 is arranged at the bottom of the temporary storage chamber 801;

in this embodiment, in the decarburization process, the absorption liquid falls into the temporary storage chamber 801 through the conduit preset on the lower end surface of the flow cover 202 due to gravity, when the absorption liquid needs to be reused, the circulating water pump 802 is started, the absorption liquid in the temporary storage chamber 801 is pumped into the first spraying component 401 and the second spraying component 501 through the liquid channel 803, thereby achieving the purpose of recycling, in the process of recycling the absorption liquid, a worker can pump a small amount of absorption liquid through the overflow pipe 804, and detect the concentration of the absorption liquid, thereby guaranteeing the decarburization effect on the natural gas, when the concentration of the absorption liquid is lower than a preset value, the valve on the outer surface of the drain pipe 805 is opened, thereby discharging the absorption liquid in the temporary storage chamber 801 to the external purification device through the drain pipe 805, and discharging the absorption liquid to the external world after the purification treatment.

In summary, the working procedure of the device is as follows: firstly, the natural gas to be treated enters the decarburization tower body 1 through the air inlet mechanism 2, secondly, the decarburization process is carried out on the natural gas by utilizing the decarburization part in the decarburization tower body 1, thirdly, the absorption liquid can be recycled through the recycling mechanism 8 in the decarburization process, then, the natural gas after decarburization is filtered through the foam removing net 6 and enters the drying mechanism 7 for drying treatment, and finally, the dried natural gas is conveyed to external equipment through the exhaust pipe 3.

The above disclosure is only a preferred embodiment of the present utility model, and it should be understood that the scope of the utility model is not limited thereto, and those skilled in the art will appreciate that all or part of the procedures described above can be performed according to the equivalent changes of the claims, and still fall within the scope of the present utility model.

Claims (8)

1. A decarbonization device for pretreatment of natural gas, comprising: decarbonization tower body (1) and drying mechanism (7), decarbonization tower body (1) bottom is provided with air inlet mechanism (2), drying mechanism (7) are provided with blast pipe (3), a serial communication port, drying mechanism (7) are including drying casing (701), and drying casing (701) connect at decarbonization tower body (1) top, drying casing (701) internally mounted has backup pad (702), and backup pad (702) surface one side is preset through-hole (703), drying mechanism (7) still include dry board (704), and dry board (704) are fixed in backup pad (702) top through adapter sleeve (705), and adapter sleeve (705) are installed on backup pad (702) up end and drying casing (701) top inner wall correspondingly.

2. A decarbonizing apparatus for pretreatment of natural gas according to claim 1, wherein said air intake mechanism (2) comprises an air intake pipe (201), and the air intake pipe (201) is provided at one side of the decarbonizing tower body (1), said air intake mechanism (2) further comprises a guide cover (202), and the guide cover (202) is installed inside the decarbonizing tower body (1), and the level of the guide cover (202) is lower than that of the air intake pipe (201).

3. A decarbonizing apparatus for pretreatment of natural gas according to claim 1, further comprising a decarbonizing section provided inside the decarbonizing tower (1), wherein the decarbonizing section comprises a first decarbonizing mechanism (4) and a second decarbonizing mechanism (5), and wherein the first decarbonizing mechanism (4) and the second decarbonizing mechanism (5) are provided inside the decarbonizing tower (1) in this order from top to bottom.

4. A decarbonizing device for pretreatment of natural gas according to claim 3, characterized in that the first decarbonizing means (4) comprises a first spraying assembly (401), the first decarbonizing means (4) further comprises a first structured packing (402), the first structured packing (402) is arranged below the first spraying assembly (401), the first decarbonizing means (4) further comprises a first orifice plate (403), and the first orifice plate (403) is arranged below the first structured packing (402).

5. A decarbonizing device for pretreatment of natural gas according to claim 3, characterized in that the second decarbonizing mechanism (5) comprises a second spraying assembly (501), the second decarbonizing mechanism (5) further comprises a bulk filler (502), the bulk filler (502) is arranged below the second spraying assembly (501), the second decarbonizing mechanism (5) further comprises a second structured filler (503), the second structured filler (503) is arranged below the bulk filler (502), the second decarbonizing mechanism (5) further comprises a second orifice plate (504), and the second orifice plate (504) is arranged below the second structured filler (503).

6. A decarbonizing device for pretreatment of natural gas according to claim 3, characterized in that a de-foaming net (6) is arranged between the decarbonizing part and the drying mechanism (7), and the de-foaming net (6) is installed above the first spraying assembly (401).

7. The decarbonization device for natural gas pretreatment according to claim 1, wherein three drying plates (704) are arranged at equal intervals, spoiler plates (706) are arranged between adjacent drying plates (704), and the drying plates (704) are connected with the connecting sleeve (705) in a clamping manner.

8. The decarbonization device for pretreatment of natural gas according to claim 1, further comprising a circulation mechanism (8), wherein the circulation mechanism (8) comprises a temporary storage chamber (801), the temporary storage chamber (801) is arranged at the bottom of the decarbonization tower body (1), the circulation mechanism (8) further comprises a circulation water pump (802), the circulation water pump (802) is arranged at one side of the outer surface of the decarbonization tower body (1), one end of the circulation water pump (802) is connected with the temporary storage chamber (801) through a pipeline, the other end of the circulation water pump (802) is provided with a liquid channel (803), the tail end of the liquid channel (803) is connected with the first spraying assembly (401) and the second spraying assembly (501), the circulation mechanism (8) further comprises an overflow pipe (804) and a drain pipe (805), the overflow pipe (804) is arranged at one side of the outer surface of the temporary storage chamber (801), and the drain pipe (805) is arranged at the bottom of the temporary storage chamber (801).