Rectifying tower equipment and synthetic ammonia production system

Abstract

The utility model provides rectifying tower equipment and a synthetic ammonia production system, and relates to the technical field of chemical equipment dosing. The rectifying tower apparatus comprises: a tower body; the collecting tank is provided with a feeding hole and a discharging hole, the feeding hole is used for adding a first preparation raw material, and the discharging hole is communicated with the tower body so as to convey a neutralizing agent in the collecting tank to the tower body; an input port of the pressurizing assembly communicates with the collecting tank, and the pressurizing assembly is used for inflating gas into the collecting tank so as to pressurize the collecting tank; the pressure control assembly comprises a pressure relief part and a pressure adjusting part, the pressure relief part is arranged on the collecting tank and used for relieving pressure of the collecting tank before feeding, and the pressure adjusting part is arranged on the collecting tank and used for adjusting the pressure in the collecting tank after feeding. Through cooperation of the collecting tank, the pressurizing assembly and the pressure control assembly of the rectifying tower equipment, a neutralizing agent can be conveyed into the tower body at any time so as to neutralize the acid environment or the alkaline environment of the tower body, and the interior of the tower body is prevented from being corroded.

Description

Technical Field

[0001] The present disclosure relates to the technical field of chemical equipment dosing, and particularly to a rectification column device and a synthetic ammonia production system. Background Art

[0002] A rectification column is one of the key devices for separating mixtures in industries such as chemical engineering, petroleum refining, and pharmaceuticals. Inside the rectification column, there are usually multiple trays. The liquid mixture is heated to boiling, and the generated vapor rises through the trays or packing layers, while the liquid flows down along the tower wall. As the vapor rises, the components with lower boiling points evaporate preferentially into the vapor phase, and the components with higher boiling points remain in the liquid phase. In this way, through multiple processes of partial evaporation and partial condensation, a product with higher purity can be finally obtained.

[0003] In the process of large-scale coal chemical production of synthetic ammonia in China, after long-term operation of the methanol-water separation column in the low-temperature methanol washing process, a large amount of debris will accumulate on the tower internals and trays, which will affect the rectification effect of the rectification column. In addition, since the conveying medium inside the tower contains carbon dioxide gas, the carbon dioxide gas dissolves in water to form carbonic acid, which easily forms an acidic environment inside the tower, causing corrosion of the tower body and internals, and even leakage, affecting the operation of the entire tower body.

[0004] Therefore, how to provide a rectification column device and a synthetic ammonia production system that can neutralize the acidic or alkaline environment of the tower body is an urgent problem to be solved at present. Summary of the Utility Model

[0005] To solve the above technical problems, an embodiment of the present disclosure provides a rectification column device, including: a tower body; a collection tank having a feed inlet and a discharge outlet, the feed inlet being used for adding a first preparation raw material, and the discharge outlet being connected to the tower body to convey a neutralizing agent in the collection tank to the tower body; a pressurization assembly, whose input port is connected to the collection tank and is used for filling the collection tank with gas to pressurize the collection tank; and a pressure control assembly including a pressure relief member and a pressure regulating member, the pressure relief member being arranged on the collection tank and used for relieving the pressure of the collection tank before feeding, and the pressure regulating member being arranged on the collection tank and used for adjusting the pressure in the collection tank after feeding.

[0006] In some embodiments, it further includes: a scrubbing tower, the scrubbing tower being connected to the tower body through a scrubbing pipeline; wherein, the discharge outlet of the collection tank is connected to the scrubbing pipeline through a discharge pipeline, and a discharge control valve is provided on the discharge pipeline.

[0007] In some embodiments, the feed inlet includes a first feed inlet and a second feed inlet; the rectifying tower equipment further includes: a feeding member, the feeding port of the feeding member is larger than the discharging port of the feeding member, and the diameter of the feeding member decreases along the direction from the feeding port to the discharging port, and the discharging port communicates with the first feed inlet; an inlet valve, disposed between the feeding member and the feed inlet; and a raw material storage tank, configured to store the second preparation raw material, communicate with the second feed inlet, and a first stop valve is provided between the raw material storage tank and the second feed inlet.

[0008] In some embodiments, the pressurizing assembly includes: a pressurized gas storage tank, communicating with the collection tank, and a second stop valve is provided between the pressurized gas storage tank and the collection tank.

[0009] In some embodiments, the pressure relief member includes: a vent valve, disposed on the collection tank; a pressure gauge, disposed on the collection tank, for monitoring the pressure in the collection tank; the pressure regulating member includes: a pressure regulating valve, disposed on the collection tank, for dynamically regulating the pressure in the collection tank to be within a preset range.

[0010] In some embodiments, it further includes: a safety valve, disposed on the collection tank.

[0011] In some embodiments, it further includes: a liquid level detection member, which includes a first detection end and a second detection end, wherein the first detection end is connected to the top of the collection tank, and a gas phase valve is provided at the first detection end, and the second detection end is connected to the bottom of the collection tank, and a liquid phase valve is provided at the second detection end.

[0012] In some embodiments, it further includes: a test pipeline, communicating between the liquid level detection member and the liquid phase valve; a first drain valve, disposed on the test pipeline, for controlling the communication of the test pipeline.

[0013] In some embodiments, it further includes: a sewage pipeline, communicating with the collection tank; a second drain valve, disposed on the sewage pipeline, for controlling the communication of the sewage pipeline.

[0014] The second aspect of the present application provides a synthetic ammonia production system, including: a tower body; a collection tank, which has a feed inlet and a discharge outlet, the feed inlet is used to add the first preparation raw material, and the discharge outlet communicates with the tower body to convey the neutralizing agent in the collection tank to the tower body; a pressurizing assembly, its input port communicates with the collection tank, and is used to fill the collection tank with gas to pressurize the collection tank; and a pressure control assembly, which includes a pressure relief member and a pressure regulating member, the pressure relief member is disposed on the collection tank and is used to relieve the pressure of the collection tank before feeding, and the pressure regulating member is disposed on the collection tank and is used to adjust the pressure in the collection tank after feeding; a control assembly, connected to the pressurizing assembly and the pressure control assembly.

[0015] Through the above technical solution, a rectification column device and a synthetic ammonia production system provided by the present disclosure, the rectification column device includes a column body, a collection tank, a pressurization assembly and a pressure control assembly. By putting the raw materials for preparing the neutralizing agent into the collection tank to obtain the neutralizing agent, the discharge port of the collection tank is communicated with the column body, and by pressurizing the collection tank through the pressurization assembly, the neutralizing agent in the collection tank can be transported to the column body through the discharge port by the pressure difference. The pressure assembly can release the pressure in the collection tank before feeding and adjust the pressure in the collection tank when transporting the neutralizing agent to the column body of the device, ensuring that it is at a safe and appropriate pressure level. The cooperation of the collection tank, the pressurization assembly and the pressure control assembly can transport the neutralizing agent to the column body at any time to neutralize the acidic or alkaline environment in the column body and prevent the inside of the column body from being corroded. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure or 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 some embodiments of the present disclosure. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0017] Figure 1 It is a schematic structural diagram of a rectification column device disclosed in an embodiment of the present disclosure.

[0018] Description of the reference numerals:

[0019] 1. Column body; 2. Collection tank; 21. Discharge pipeline; 3. Pressurization assembly; 31. Pressurized gas storage tank; 32. Second stop valve; 4. Vent valve; 41. Pressure gauge; 42. Pressure regulating valve; 5. Scrubbing tower; 51. Scrubbing pipeline; 6. Discharge control valve; 7. Feeding part; 8. Inlet valve; 9. Raw material storage tank; 10. First stop valve; 11. Safety valve; 12. Liquid level detection part; 121. Gas phase valve; 122. Liquid phase valve; 13. First drain valve; 14. Second drain valve. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] The following will further describe in detail the embodiments of the present disclosure in conjunction with the drawings and embodiments. The detailed description and drawings of the following embodiments are used to exemplarily illustrate the principles of the present disclosure, but cannot be used to limit the scope of the present disclosure. The present disclosure can be implemented in many different forms, not limited to the specific embodiments disclosed in the text, but including all technical solutions falling within the scope of the claims.

[0021] The present disclosure provides these embodiments to make the present disclosure thorough and complete, and to fully convey the scope of the present disclosure to those skilled in the art. It should be noted that: unless otherwise specifically stated, the relative arrangements of components and steps, the components of materials, numerical expressions and values set forth in these embodiments should be construed as merely exemplary, rather than as limitations.

[0022] It should be noted that in the description of the present disclosure, unless otherwise specified, the meaning of "a plurality" is greater than or equal to two; the orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", "inner", "outer", etc. is only for the convenience of describing the present disclosure and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be construed as a limitation of the present disclosure. When the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0023] In addition, the "first", "second" and similar terms used in the present disclosure do not denote any order, quantity or importance, but are only used to distinguish different parts. "Vertical" is not strictly vertical, but within the allowable error range. "Parallel" is not strictly parallel, but within the allowable error range. Terms such as "comprising" or "including" mean that the elements before this term cover the elements listed after this term, and do not exclude the possibility of also covering other elements.

[0024] It should also be noted that in the description of the present disclosure, unless otherwise clearly defined and limited, the terms "mounted", "connected" and "coupled" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be directly connected, or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present disclosure can be understood according to specific circumstances. When it is described that a specific device is located between a first device and a second device, there may or may not be an intermediate device between the specific device and the first device or the second device.

[0025] All terms used in the present disclosure have the same meaning as understood by those of ordinary skill in the art to which the present disclosure pertains, unless otherwise specifically defined. It should also be understood that terms defined in a general dictionary, such as those, should be interpreted as having a meaning consistent with their meaning in the context of the relevant art, and should not be interpreted in an idealized or overly formal sense, unless specifically defined as such here.

[0026] Technologies, methods and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods and devices should be regarded as part of the specification.

[0027] Embodiment 1

[0028] An embodiment of the present disclosure provides a rectification column device, including: a column body 1; a collection tank 2, which has a feed inlet and a discharge outlet, the feed inlet is used to add a first preparation raw material, and the discharge outlet is connected to the column body 1 to transport the neutralizer in the collection tank 2 to the column body 1; a pressurization assembly 3, whose input port is connected to the collection tank 2 and is used to fill the collection tank 2 with gas to pressurize the collection tank 2; and a pressure control assembly, which includes a pressure relief member and a pressure regulating member, the pressure relief member is arranged on the collection tank 2 and is used to relieve the pressure of the collection tank 2 before feeding, and the pressure regulating member is arranged on the collection tank 2 and is used to adjust the pressure in the collection tank 2 after feeding.

[0029] Specifically, as Figure 1 shown, the column body 1 is used to carry out the main process, and the column body 1 can be a distillation column, an extraction column, a reaction column, etc. The collection tank 2 is used for synthesizing and storing the neutralizer, and the size of the collection tank 2 can be set according to actual needs. The number of the collection tanks 2 can be multiple, which can transport the neutralizer to the column body 1 simultaneously to improve the neutralization speed. The pressurization assembly 3 is used to pressurize the collection tank 2, and the neutralizer is transported into the column body 1 by using the pressure difference. The pressurization assembly 3 can be a gas compressor, a gas booster, a gas pump, etc. The pressure control assembly includes a pressure relief member and a pressure regulating member. The pressure relief member is used to relieve the pressure of the collection tank 2 to prevent the pressure in the collection tank 2 from being too high to hinder the feeding. The pressure relief member can be a breathing valve, a pressure relief valve, etc. connected to the collection tank 2. The pressure regulating member can dynamically adjust the pressure in the collection tank 2 to keep the pressure in the collection tank 2 within the normal pressure range. The pressure regulating member can be a pressure reducing valve, a butterfly valve, a ball valve, etc. connected to the collection tank 2.

[0030] A rectification column device and an ammonia synthesis production system provided by the present disclosure. The rectification column device includes a column body 1, a collection tank 2, a pressurization assembly 3 and a pressure control assembly. Among them, the collection tank 2, the pressurization assembly 3 and the pressure control assembly constitute a neutralizer replenishing device for the column body 1. By putting the first preparation raw material of the neutralizer into the collection tank 2 to obtain the neutralizer, the discharge outlet of the collection tank 2 is connected to the column body 1, and by pressurizing the collection tank 2 through the pressurization assembly 3, the neutralizer in the collection tank 2 can be transported to the column body 1 through the discharge outlet by the pressure difference. The pressure assembly can release the pressure in the collection tank 2 before feeding and adjust the pressure in the collection tank 2 when transporting the neutralizer to the column body 1 to ensure that it is at a safe and appropriate pressure level. The cooperation of the collection tank 2, the pressurization assembly 3 and the pressure control assembly can transport the neutralizer to the column body 1 at any time to neutralize the acidic or alkaline environment in the column body 1 and prevent the inside of the column body 1 from being corroded.

[0031] In some embodiments, it further includes: a scrubbing tower 5, which is connected to the tower body 1 through a scrubbing pipeline 51; wherein, the discharge port of the collection tank 2 is connected to the scrubbing pipeline 51 through a discharge pipeline 21, and a discharge control valve 6 is provided on the discharge pipeline 21.

[0032] Specifically, as Figure 1 shown, the tower further includes a scrubbing tower 5, which is connected to the tower body 1 through a scrubbing pipeline 51 to provide the detergent required for scrubbing the tower body 1. The discharge port of the collection tank 2 can be connected to the scrubbing pipeline 51 through a discharge pipeline 21, and the neutralizing agent can converge with the detergent in the scrubbing pipeline 51 and enter the tower body 1 together. The outlet of the scrubbing pipeline 51 can be connected to the top, middle, bottom, etc. of the tower body 1. Additionally, a storage control valve 6 for controlling the flow of the neutralizing agent can be provided on the discharge pipeline 21. By mixing on the scrubbing pipeline 51, the complexity inside the tower body 1 can be simplified, ensuring that the detergent and the neutralizing agent are fully mixed before entering the tower body 1, improving the mixing uniformity of the neutralizing agent and the detergent, and thus enhancing the efficiency and effect of subsequent processing. Additionally, directly mixing inside the tower body 1 may result in too high a concentration of the neutralizing agent or the detergent in local areas, while pre-mixing on the scrubbing pipeline 51 can avoid this situation and ensure uniform distribution.

[0033] In some embodiments, the feed port includes a first feed port and a second feed port; the rectification tower device further includes: a feeding member 7, the feeding port of the feeding member 7 is larger than the discharge port of the feeding member 7, and the diameter of the feeding member 7 decreases along the direction from the feeding port to the discharge port, and the discharge port is connected to the first feed port; an inlet valve 8, provided between the feeding member 7 and the feed port; and a raw material storage tank 9, used for storing the second preparation raw material, connected to the second feed port, and a first stop valve 10 is provided between the raw material storage tank 9 and the second feed port.

[0034] Specifically, as Figure 1 shown, the feed port of the collection tank 2 includes a first feed port and a second feed port. A feeding member 7 is provided at the first feed port. The feeding member 7 can be a funnel, and the diameter of the feeding member 7 decreases along the direction from the feeding port to the discharge port, which helps to control the flow of materials. An inlet valve 8 is provided between the feeding member 7 and the inlet valve 8, used to control the flow rate of the first preparation raw material from the feeding member 7 into the first feed port. The raw material storage tank 9 is used for storing the second preparation raw material. The raw material storage tank 9 is connected to the second feed port, and a first stop valve 10 is provided between the raw material storage tank 9 and the second feed port. The flow rate of the second preparation raw material can be precisely controlled through the first stop valve 10 to ensure an appropriate proportion of materials inside the rectification tower device body. The first feed port can be used to put alkali tablets, and the second feed port can place demineralized water.

[0035] In some embodiments, the pressurization assembly 3 includes: a pressurized gas storage tank 31, which is connected to the collection tank 2, and a second cut-off valve 32 is provided between the pressurized gas storage tank 31 and the collection tank 2.

[0036] Specifically, as Figure 1 shown, the pressurized gas storage tank 31 is used to store pressurized gas, and inert gas such as nitrogen or neon can be placed. Here, low-pressure nitrogen can prevent nitrogen from reacting with other raw materials. A second cut-off valve 32 is provided between the pressurized gas storage tank 31 and the collection tank 2 to control the flow rate of the gas flowing from the pressurized gas storage tank 31 to the collection tank 2. The second cut-off valve 32 can avoid over-pressurization or under-pressurization, thus ensuring the pressure stability in the collection tank 2. The pressurization assembly 3 can fill the collection tank 2 with inert gas, increase the pressure in the collection tank 2, make the pressure higher than the pressure of the tower body 1, and can use the pressure difference to press the neutralizer in the collection tank 2 into the tower body 1, reducing energy consumption.

[0037] In some embodiments, the pressure relief member includes: a vent valve 4, which is provided on the collection tank 2; a pressure gauge 41, which is provided on the collection tank 2 and is used to monitor the pressure in the collection tank 2; the pressure regulating member includes: a pressure regulating valve 42, which is provided on the collection tank 2 and dynamically adjusts the pressure in the collection tank 2 to be within a preset range.

[0038] Specifically, as Figure 1 shown, the pressure relief member includes a vent valve 4, which is provided on the collection tank 2. Before the first preparation raw material is put in, the vent valve 4 is opened to make the pressure in the collection tank 2 zero. The pressure gauge 41 can monitor the magnitude of the pressure in the collection tank 2. Here, the number of pressure gauges 41 is not specifically limited. Multiple pressure gauges 41 can be provided on the collection tank 2, and the average value of the pressure values of the multiple pressure gauges 41 is taken to determine the final pressure value in the collection tank 2, improving the measurement accuracy. The pressure regulating member includes a pressure regulating valve 42. The pressure regulating valve 42 can be a self-acting pressure regulating valve. The self-acting pressure regulating valve can ensure that the pressure in the collection tank 2 is within a preset range. If the pressure in the collection tank 2 exceeds the preset range, the self-acting pressure regulating valve can open the valve to release the pressure, making the pressure in the collection tank 2 drop to within the preset range. If the pressure value in the collection tank 2 is lower than the preset range, the self-acting pressure regulating valve can close its valve, making the pressure in the collection tank 2 rise to within the preset range.

[0039] In some embodiments, it further includes: a safety valve 11, which is provided on the collection tank 2.

[0040] Specifically, as Figure 1As shown, in order to further ensure that the pressure in the collection tank 2 is within a preset range, a safety valve 11 is also provided in the collection tank 2. The safety valve 11 can play a role in secondary monitoring and pressure adjustment when the pressure regulating valve 42 fails, thereby ensuring the safety and stability of the synthetic ammonia production system.

[0041] In some embodiments, it further includes: a liquid level detection member 12, which includes a first detection end and a second detection end. The first detection end is connected to the top of the collection tank 2, and a gas phase valve 121 is provided at the first detection end. The second detection end is connected to the bottom of the collection tank 2, and a liquid phase valve 122 is provided at the second detection end.

[0042] Specifically, as Figure 1 shown, the liquid level detection member 12 may include a differential pressure transmitter disposed at the first detection end, which measures the difference between the gas phase pressure above the liquid in the collection tank 2 and the atmospheric pressure outside the tank to calculate the gas phase liquid level. The liquid level detection member 12 may also include a radar level gauge disposed at the second detection end, which measures the liquid phase liquid level by emitting microwaves and receiving reflected waves. Or the liquid level detection member 12 may also include a float type level gauge, which measures the liquid phase liquid level by the up and down movement of the float with the change of the liquid level. In addition, the gas phase valve 121 is used to open or close the gas phase channel when detecting the liquid level, and the liquid phase valve 122 is used to open or close the liquid phase channel when detecting the liquid level. By providing the liquid level detection member 12, the gas phase liquid level and the liquid phase liquid level in the collection tank 2 can be detected simultaneously in real time, and the accurate monitoring of the liquid level in the collection tank 2 can be realized.

[0043] In some embodiments, it further includes: a test pipeline, which is connected between the liquid level detection member 12 and the liquid phase valve 122; a first drain valve 13, which is provided on the test pipeline and is used to control the connection of the test pipeline.

[0044] Specifically, as Figure 1 shown, the test pipeline is connected between the second detection end of the liquid level detection member 12 and the liquid phase valve 122, and is used to drain the liquid in the test pipeline during testing and calibration. A first drain valve 13 is provided on the test pipeline. During testing and calibration, the gas phase valve 121 can be closed, and the liquid in the test pipeline can be drained through the first drain valve 13 for detection. The operator can use pH test paper to detect the acidity and alkalinity of the neutralizer in the collection tank 2.

[0045] In some embodiments, it further includes: a sewage pipeline, which is connected to the collection tank 2; a second drain valve 14, which is provided on the sewage pipeline and is used to control the connection of the sewage pipeline.

[0046] Specifically, as Figure 1As shown, the collection tank 2 is provided with a sewage discharge pipeline, which can be arranged at the bottom of the collection tank 2 to facilitate the discharge of the sewage at the bottom of the collection tank 2. A second drain valve 14 is provided on the sewage discharge pipeline to control the connection of the sewage discharge pipeline for sewage discharge operation.

[0047] In addition, when adding alkali tablets into the collection tank 2, the alkali tablets will release heat when encountering water. In order to prevent the neutralizing agent at too high a temperature from affecting the operation of the tower body 1, a cooling device can be arranged in the collection tank 2. The cooling device can be a coil cooler arranged in the collection tank 2, or the cooling device can be a jacket cooler. By arranging a jacket outside the collection tank 2 and introducing a cooling medium or a heat medium into the jacket, energy exchange is carried out with the neutralizing agent in the tank, so that the neutralizing agent reaches a preset temperature and then is discharged into the tower body 1.

[0048] Embodiment 2

[0049] The second aspect of the present application provides a synthetic ammonia production system, including: a tower body 1; a collection tank 2 having a feed inlet and a discharge outlet, the feed inlet being used for adding a first preparation raw material, and the discharge outlet being connected to the tower body 1 to convey the neutralizing agent in the collection tank 2 to the tower body 1; a pressurization assembly 3, whose input port is connected to the collection tank 2 and is used for filling the collection tank 2 with gas to pressurize the collection tank 2; and a pressure control assembly including a pressure relief member and a pressure regulating member. The pressure relief member is arranged on the collection tank 2 and is used for relieving the pressure of the collection tank 2 before feeding, and the pressure regulating member is arranged on the collection tank 2 and is used for adjusting the pressure in the collection tank 2 after feeding; a control assembly is connected to the pressurization assembly 3 and the pressure control assembly.

[0050] The second aspect of the present application provides a synthetic ammonia production system, which includes a rectification tower device. The number of rectification tower devices is not specifically limited here and can be one or more, and multiple rectification tower devices can also work simultaneously. The synthetic ammonia production system further includes a control component, which can control the start and stop of the pressurization component 3 and the pressure component. For example, before introducing the first preparation raw material, first control the opening of the vent valve 4 to reduce the pressure in the collection tank 2 to zero, and then feed the material; during the feeding process, close the vent valve 4, open the pressure regulating valve 42, and then control the opening degree of the control inlet valve 8 to control the addition amount of the first preparation raw material; then open the first stop valve 10 to control the addition amount of the second preparation raw material, so that the first preparation raw material and the second preparation raw material are mixed to form a neutralizing agent; after the first preparation raw material and the second preparation raw material are added, then control the opening of the first drain valve 13 to measure the pH value of the obtained neutralizing agent; then control the opening of the second stop valve 32 and simultaneously open the discharge control valve 6 to pressurize the collection tank 2 so that the pressure in the collection tank 2 reaches a preset value and the neutralizing agent is transported to the tower body 1. When the transportation of the neutralizing agent is completed, close the discharge control valve 6, continue to pressurize the collection tank 2, and open the second drain valve 14 to discharge the sewage in the collection tank 2.

[0051] When the collection tank 2 needs to be repaired, control the second stop valve 32, the first stop valve 10, and the discharge control valve 6 to close through the control component, open the vent valve 4 to relieve the pressure in the collection tank 2 to atmospheric pressure, open the second drain valve 14, and discharge the polluted liquid in the collection tank 2; then alternately perform the following operations: open the second stop valve 32, close the second drain valve 14, and close the second stop valve 32 and open the second drain valve 14 to perform gas displacement and discharge of polluted liquid in the collection tank 2. The process of alternately operating the second stop valve 32 and the second drain valve 14 for gas displacement and discharge of polluted liquid can not only thoroughly remove the polluted liquid in the tank, but also improve the efficiency of gas displacement, reduce safety hazards, ensure environmental safety, simplify the operation process, improve work efficiency, and extend the equipment life.

[0052] So far, the embodiments of the present disclosure have been described in detail. In order to avoid obscuring the concept of the present disclosure, some details well known in the art have not been described. Those skilled in the art can fully understand how to implement the technical solutions disclosed here based on the above description.

[0053] Although some specific embodiments of the present disclosure have been described in detail by way of examples, those skilled in the art should understand that the above examples are only for illustration and not for limiting the scope of the present disclosure. Those skilled in the art should understand that the above embodiments can be modified or equivalent substitutions can be made to some technical features without departing from the scope and spirit of the present disclosure. In particular, as long as there is no structural conflict, the various technical features mentioned in each embodiment can be combined in any way.

Claims

1. A rectification column device, characterized in that, Comprising: Tower body (1); Collection tank (2), which has a feed inlet and a discharge outlet, the feed inlet being used to add the first preparation raw material, and the discharge outlet being connected to the tower body (1) to convey the neutralizing agent in the collection tank (2) to the tower body (1); Pressurizing assembly (3), whose input port is connected to the collection tank (2) and is used to fill the collection tank (2) with gas to pressurize the collection tank (2); And Pressure control assembly, which includes a pressure relief member and a pressure regulating member. The pressure relief member is arranged on the collection tank (2) and is used to relieve the pressure of the collection tank (2) before feeding. The pressure regulating member is arranged on the collection tank (2) and is used to adjust the pressure in the collection tank (2) after feeding.

2. The rectifying column equipment according to claim 1, characterized in that, Further comprising: Scrubbing tower (5), the scrubbing tower (5) being connected to the tower body (1) through a scrubbing pipeline (51); Wherein, the discharge outlet of the collection tank (2) is connected to the scrubbing pipeline (51) through a discharge pipeline (21), and a discharge control valve (6) is provided on the discharge pipeline (21).

3. The rectifying tower equipment according to claim 1, characterized in that The feed inlet includes a first feed inlet and a second feed inlet; The rectifying tower equipment further comprises: Feeding member (7), the feeding port of the feeding member (7) is larger than the discharging port of the feeding member (7), and the diameter of the feeding member (7) decreases along the direction from the feeding port to the discharging port, and the discharging port is connected to the first feed inlet; Inlet valve (8), arranged between the feeding member (7) and the feed inlet; and Raw material storage tank (9), used to store the second preparation raw material, connected to the second feed inlet, and a first stop valve (10) is provided between the raw material storage tank (9) and the second feed inlet.

4. The rectifying column equipment according to claim 1, characterized in that, The pressurizing assembly (3) includes: Pressurizing gas storage tank (31), connected to the collection tank (2), and a second stop valve (32) is provided between the pressurizing gas storage tank (31) and the collection tank (2).

5. The rectifying tower equipment according to claim 1, characterized in that The pressure relief member includes: Vent valve (4), arranged on the collection tank (2); Pressure gauge (41), arranged on the collection tank (2) and used to monitor the pressure in the collection tank (2); The pressure regulating member includes: Pressure regulating valve (42), arranged on the collection tank (2) to dynamically adjust the pressure in the collection tank (2) within a preset range.

6. The rectifying column device according to claim 1, characterized in that, Further comprising: Safety valve (11), arranged on the collection tank (2).

7. The rectifying column equipment according to claim 1, characterized in that, Further comprising: Liquid level detection member (12), which includes a first detection end and a second detection end. The first detection end is connected to the top of the collection tank (2), and a gas phase valve (121) is provided at the first detection end. The second detection end is connected to the bottom of the collection tank (2), and a liquid phase valve (122) is provided at the second detection end.

8. The rectifying column equipment according to claim 7, characterized in that, Further comprising: Test pipeline, connected between the liquid level detection member (12) and the liquid phase valve (122); First drain valve (13), arranged on the test pipeline and used to control the connection of the test pipeline.

9. The rectifying column equipment according to claim 1, characterized in that, Further comprising: A sewage discharge pipeline is connected to the collection tank (2); A second drain valve (14) is arranged on the sewage discharge pipeline and is used to control the connection of the sewage discharge pipeline.

10. An ammonia synthesis production system, characterized in that, It includes: A tower body (1); A collection tank (2) having a feed inlet and a discharge outlet. The feed inlet is used to add a first preparation raw material, and the discharge outlet is connected to the tower body (1) to convey the neutralizing agent in the collection tank (2) to the tower body (1); A pressurizing assembly (3) whose input port is connected to the collection tank (2) and is used to fill the collection tank (2) with gas to pressurize the collection tank (2); and A pressure control assembly including a pressure relief member and a pressure regulating member. The pressure relief member is arranged on the collection tank (2) and is used to relieve the pressure of the collection tank (2) before feeding. The pressure regulating member is arranged on the collection tank (2) and is used to adjust the pressure in the collection tank (2) after feeding; A control assembly is connected to the pressurizing assembly (3) and the pressure control assembly.

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