Synthetic ammonia condensation separator

Abstract

The utility model discloses a synthesis ammonia condensation separator, and belongs to the technical field of synthesis ammonia. The synthetic ammonia condensation separator comprises a condensation zone, a separation zone and a pipeline. Wherein a first air inlet is formed in the condensation area, and a cold source inlet and a cold source outlet are formed in one side of the condensation area; the separation area is located in the downstream direction of the condensation area and is adjacent to the condensation area, and a liquid ammonia outlet is formed in the bottom end of the separation area; one end of the pipeline is communicated with the first air inlet of the condensation area, and the other end of the pipeline penetrates through the condensation area and is positioned in the separation area; wherein the pipeline is at least provided with a plurality of bent sections. Compared with the prior art, the liquid ammonia production efficiency is improved to a certain extent.

Description

Technical Field

[0001] The utility model relates to the technical field of ammonia synthesis, in particular to an ammonia synthesis condensation separator. Background Art

[0002] The preparation of synthetic ammonia generally uses an ammonia synthesis device. In this process, the ammonia synthesis device will generate a mixed gas, which mainly includes ammonia non-condensable gas, a small amount of nitrogen and a small amount of hydrogen. The mixed gas can obtain liquid ammonia, that is, ammonia water, through the operations of condensation and gas-liquid separation. Therefore, the mixed gas has a high recycling value.

[0003] However, in the prior art, the preparation of liquid ammonia requires passing the mixed gas into a condensation device to produce a gas-liquid mixture, and then using a corresponding container to store the gas-liquid mixture; then, passing the stored gas-liquid mixture into a separation device; finally, obtaining liquid ammonia under the action of the separation device. Such efficiency is generally low. Therefore, it is necessary to manufacture a device in other forms that can improve the efficiency of producing liquid ammonia. Content of the Utility Model

[0004] To solve the defects in the prior art, the ammonia synthesis condensation separator provided by the utility model mainly includes: a condensation area, a pipeline, and a separation area. When in use, the mixed gas generated by the ammonia synthesis device is introduced into the pipeline in the condensation area from the first air inlet at the top of the condensation area. Part of the ammonia gas in the pipeline is converted from a gaseous state to a liquid state, that is, liquid ammonia, through the condensation operation; the liquid ammonia and another part of the mixed gas flow into the separation area, and finally the liquid ammonia flows out from the liquid ammonia outlet at the bottom of the separation area, thus realizing the separation of gas and liquid. Compared with the prior art, the utility model improves the efficiency of producing liquid ammonia to a certain extent.

[0005] To achieve the above purpose, the utility model provides the following technical solutions:

[0006] An ammonia synthesis condensation separator, comprising:

[0007] A condensation area, on which a first air inlet is provided, and a cold source inlet and a cold source outlet are provided on one side of the condensation area;

[0008] A separation area, located downstream of the condensation area and adjacent to the condensation area, and a liquid ammonia outlet is provided at the bottom end of the separation area;

[0009] A pipeline, one end of which is communicated with the first air inlet, and the other end passes through the condensation area and is located in the separation area;

[0010] Wherein,

[0011] The pipeline has at least multiple bending sections.

[0012] Further, the pipeline is a spiral coiled pipe.

[0013] Furthermore, the ammonia synthesis condenser-separator further includes:

[0014] An upper tube sheet is disposed in the condensation zone, and the outer wall of the upper tube sheet is connected to the inner wall of the condensation zone, so that a chamber is formed in the condensation zone above the upper tube sheet, and the first air inlet is communicated with the chamber;

[0015] At least one second air inlet is formed in the upper tube sheet, and the upper end of the pipeline is communicated with the second air inlet.

[0016] Furthermore, the ammonia synthesis condenser-separator further includes:

[0017] A lower tube sheet is disposed in the condensation zone and in the downstream direction of the upper tube sheet. The outer wall of the lower tube sheet is connected to the inner wall of the condensation zone, so that a region for the cold source to flow through is formed in the condensation zone between the upper tube sheet and the lower tube sheet;

[0018] At least one second air outlet is formed in the lower tube sheet, and the lower end of the pipeline is communicated with the second air outlet.

[0019] Furthermore, the number of the pipelines is multiple, and the multiple pipelines cross each other.

[0020] Furthermore, the ammonia synthesis condenser-separator further includes:

[0021] A liquid collector having an open collecting end and a discharging end smaller in size relative to the collecting end;

[0022] The liquid collector is disposed in the separation zone, and the collecting end of the liquid collector is arranged opposite to the lower end of the pipeline for collecting the liquid transported through the pipeline.

[0023] Furthermore, the ammonia synthesis condenser-separator further includes:

[0024] A wire mesh demister;

[0025] The wire mesh demister is disposed in the separation zone, and the discharging end of the liquid collector passes through the wire mesh demister.

[0026] Furthermore, a first air outlet is provided in the upper part of the separation zone; the first air outlet is located above the wire mesh demister.

[0027] The beneficial effects of the present utility model are:

[0028] The ammonia synthesis condenser-separator provided by the present utility model includes components such as a condensation zone, a separation zone, and pipelines. The mixed gas generated by the ammonia synthesis device is introduced into the pipeline in the condensation zone from the first air inlet at the top of the condensation zone. Part of the ammonia gas in this pipeline is converted from a gaseous state to a liquid state, i.e., liquid ammonia, through the condensation operation. This liquid ammonia and another part of the mixed gas flow into the separation zone, and finally the liquid ammonia flows out from the liquid ammonia outlet at the bottom of the separation zone, thus achieving the separation of gas and liquid, and improving the efficiency of producing liquid ammonia. Brief Description of the Drawings

[0029] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0030] Figure 2 is a schematic diagram of the movement direction of the cold source in the present utility model.

[0031] Reference Signs:

[0032] 1. Condensation zone; 11. First air inlet; 12. Cold source inlet; 13. Cold source outlet; 14. Chamber; 15. Region;

[0033] 2. Separation zone; 21. Liquid ammonia outlet; 22. First air outlet;

[0034] 3. Upper tube sheet; 31. Second air inlet;

[0035] 4. Pipeline;

[0036] 5. Lower tube sheet; 51. Second air outlet;

[0037] 6. Liquid collector; 60. Collection end; 61. Discharge end;

[0038] 7. Wire mesh demister;

[0039] A1. Second direction; B1. Third direction; C1. First direction. Detailed Embodiment

[0040] The embodiments of the present utility model will be described in detail below. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions from beginning to end. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present utility model and should not be construed as limiting the present utility model.

[0041] Embodiment 1

[0042] As shown in the atta Figure 1As shown in the figure, the utility model discloses a synthetic ammonia condensation separator for improving the efficiency of producing liquid ammonia, which mainly includes a condensation zone 1, a separation zone 2 and a pipeline 4. During use, the mixed gas generated by the synthetic ammonia device is introduced into the pipeline 4 in the condensation zone 1 from the first air inlet 11 at the top of the condensation zone 1. Part of the ammonia gas in the pipeline 4 is converted from gaseous state to liquid state through condensation operation, that is, liquid ammonia. The liquid ammonia and another part of the mixed gas flow into the separation zone 2 from the outlet of the pipeline 4, and finally the liquid ammonia is discharged from the liquid ammonia outlet 21 at the bottom of the separation zone 2, thus realizing the separation of gas and liquid. Compared with the prior art, the production efficiency of liquid ammonia is improved in this embodiment.

[0043] As shown in the attached Figure 1 figure, the synthetic ammonia condensation separator includes the following structure: The upper side of the synthetic ammonia condensation separator is the condensation zone 1, on which a first air inlet 11 is provided, and a cold source inlet 12 and a cold source outlet 13 are provided on one side of the condensation zone 1. The lower side of the condensation zone 1 is provided with a separation zone 2, which is located in the downstream direction of the condensation zone 1 and is adjacent to the condensation zone 1, and a liquid ammonia outlet 21 is provided at the bottom end of the separation zone 2. A pipeline 4 is arranged inside the synthetic ammonia condensation separator, one end of the pipeline 4 is communicated with the first air inlet 11, the other end of the pipeline 4 passes through the condensation zone 1 and is located in the separation zone 2, and the pipeline 4 has at least multiple bending sections.

[0044] When using the above synthetic ammonia condensation separator, as long as ammonia-containing gas is introduced from the first air inlet 11 of the condensation zone 1, the ammonia gas can obtain a gas-liquid mixture of liquid ammonia and other gases under the action of the condensation zone 1 and the separation zone 2. Then, the liquid ammonia is discharged from the liquid ammonia outlet 21 of the separation zone 2, and finally the preparation of liquid ammonia is completed, thus avoiding the problem that the preparation of liquid ammonia in the prior art needs to be continuously switched among multiple devices.

[0045] To achieve the purpose of allowing the mixed gas generated by the synthetic ammonia device to be introduced into the synthetic ammonia condensation separator, as shown in the attached Figure 1 figure, a first air inlet 11 is provided on the condensation zone 1. In a specific application scenario, the first air inlet 11 is at the top of the condensation zone 1. A pressure sensor is usually arranged in the condensation zone 1, and a gas collector is arranged at the first air inlet 11. When the pressure sensor detects that the gas in the condensation zone 1 meets the preset value, the gas collector will be closed, and the mixed gas generated by the synthetic ammonia device cannot enter the condensation zone 1 anymore, so that the whole device remains stable during the working process. The first air inlet 11 realizes the purpose of allowing the mixed gas generated by the synthetic ammonia device to be introduced into the synthetic ammonia condensation separator.

[0046] To achieve the purpose of condensation, a cold source inlet 12 and a cold source outlet 13 are provided on one side of the condensation zone 1. In a specific application scenario, the cold source inlet 12 is provided at the lower part of one side of the condensation zone 1, and the cold source outlet 13 is provided at the upper part of the side wall of the condensation zone 1, and the cold source inlet 12 and the cold source outlet 13 are located on the same side of the condensation zone 1; when the cold source enters the condensation zone 1 from the cold source inlet 12, the temperature in the condensation zone 1 will decrease, thus meeting the conditions for ammonia to be converted into liquid ammonia. The cold source is generally liquid nitrogen with a temperature of -20°C; after a period of time, the cold source flows out from the cold source outlet 13, and the temperature in the condensation zone 1 is maintained within -15°C, as shown in the appendix Figure 2 As shown, the cold source moves along the first direction C1 in the condensation zone 1. During this process, a part of the ammonia in the pipeline 4 can be stably converted into liquid ammonia. While achieving the purpose of condensation in this embodiment, the stability of the structure of this embodiment can also be improved to a certain extent.

[0047] Furthermore, to improve the efficiency of ammonia conversion into liquid ammonia, the pipeline 4 is a spiral coiled pipe. Because after the mixed gas is passed into the spiral coiled pipe, 70%-80% of the ammonia in the mixed gas can be converted into liquid ammonia under the action of the condensation zone 1, thus improving the conversion efficiency of liquid ammonia.

[0048] Furthermore, as shown in the appendix Figure 1 As shown, a upper tube sheet 3 is provided in the condensation zone 1. In a specific application scenario, the upper tube sheet 3 is arranged in the condensation zone 1, and the outer wall of the upper tube sheet 3 is connected to the inner wall of the condensation zone 1, so that a chamber 14 is formed in the condensation zone 1 above the upper tube sheet 3, and the first air inlet 11 at the top of the condensation zone 1 is communicated with the chamber 14; wherein, at least one second air inlet 31 is opened on the upper tube sheet 3, and the upper end of the pipeline 4 is connected to the second air inlet 31. During use, the mixed gas enters the chamber 14 of the condensation zone 1 from the first air inlet 11, and the mixed gas flows into the pipeline 4 from the second air inlet 31 of the upper tube sheet 3 through the chamber 14, which is convenient for the cold source to cool the mixed gas in the pipeline 4.

[0049] Furthermore, as shown in the appendix Figure 1As shown, a lower tube sheet 5 is provided in the condensation zone 1 for forming a region 15 through which the cold source flows. In a specific application scenario, the lower tube sheet 5 is disposed in the condensation zone 1, and the lower tube sheet 5 is located in the downstream direction of the upper tube sheet 3. The outer wall of the lower tube sheet 5 is connected to the inner wall of the condensation zone 1, so that the condensation zone 1 between the upper tube sheet 3 and the lower tube sheet 5 forms a region 15 through which the cold source flows; wherein, at least one second air outlet 51 is formed on the lower tube sheet 5, and the lower end of the pipeline 4 is communicated with the second air outlet 51. During use, the mixed gas flowing into the pipeline 4 through the upper tube sheet 3 will enter the region 15 of the condensation zone 1. Under the action of the region 15 through which the cold source flows, the mixed gas can fully exchange heat with the cold source medium, so that the temperature in the region 15 gradually decreases and reaches the condensation point; subsequently, the condensed liquid ammonia and the incompletely condensed mixed gas flow out from the second air outlet 51 of the lower tube sheet 5 and enter the subsequent separation zone 2 for gas-liquid separation treatment. Usually, the user can, according to actual needs, open a plurality of second air inlets 31 on one side of the upper tube sheet 3; of course, the number of pipelines 4 needs to be consistent with the number of the second air inlets 31, and the second air outlets 51 formed on one side of the lower tube sheet 5 should also correspond to the second air inlets 31 one by one.

[0050] Further, in a specific application scenario, two spiral coiled pipes are provided in the condensation zone 1, and the two spiral coiled pipes cross each other. The design of the spiral coiled pipes intersecting each other increases the total area of contact with the cold source, thereby improving the heat exchange efficiency to a certain extent.

[0051] Further, in another specific application scenario, two spiral coiled pipes are provided in the condensation zone 1, and the two spiral coiled pipes do not cross each other. Such a design allows each part of the coiled pipe to be accessed without additional disassembly or complex operations, thus simplifying the operations of cleaning and inspecting the spiral coiled pipe.

[0052] To achieve the purpose of gas-liquid separation, the condensation zone 1 is connected to the separation zone 2. In a specific application scenario, the separation zone 2 is located in the downstream direction of the condensation zone 1, and the separation zone 2 is disposed adjacent to the condensation zone 1; wherein, a liquid ammonia outlet 21 is provided at the bottom end of the separation zone 2. During use, the gas-liquid mixture in the condensation zone 1 flows into the separation zone 2 from the second air outlet 51 of the lower tube sheet 5, and the liquid ammonia in the gas-liquid mixture can flow out from the liquid ammonia outlet 21 in the separation zone 2, as shown in the appendix Figure 1 As shown, the liquid ammonia in this embodiment flows along the third direction B1 (thick arrow), thus achieving the purpose of gas-liquid separation.

[0053] Embodiment 2

[0054] As shown in the appendix Figure 1As shown, the present utility model discloses a synthetic ammonia condenser-separator, which is used to improve the working performance of the condenser-separator. In addition to the components in the above-mentioned Embodiment 1, it further includes a wire mesh demister 7 and a liquid collector 6. The liquid collector 6 is mainly used to collect the condensed liquid ammonia. The wire mesh demister 7 can limit the mixed gas in the lower part of the separation zone 2 from reaching the upper part of the separation zone 2 and suppress the foam generated by the mixed gas in the separation zone 2 through the filtering effect of the wire mesh; through the arrangement of the liquid collector 6 and the wire mesh demister 7, the working performance of the condenser-separator is improved, and to a certain extent, the efficiency of producing liquid ammonia is also increased.

[0055] To enhance the effect of gas-liquid separation, as shown in the appendix Figure 1 As shown, a liquid collector 6 is arranged inside the separation zone 2. In a specific application scenario, the liquid collector 6 has an open collecting end 60, and the liquid collector 6 also has a discharge end 61 with a smaller size relative to the collecting end 60; the liquid collector 6 is arranged in the separation zone 2, and the collecting end 60 of the liquid collector 6 is arranged opposite to the lower end of the pipeline 4 for collecting the liquid transported through the pipeline 4. During use, the liquid ammonia prepared in the condensation zone 1 flows into the collecting end 60 of the liquid collector 6. Due to the influence of gravity, the liquid ammonia will move towards the discharge end 61 of the liquid collector 6, and finally the liquid ammonia flows out from the discharge end 61, thereby enhancing the effect of gas-liquid separation.

[0056] To suppress the generation of foam in the separation zone 2, as shown in the appendix Figure 1 As shown, a wire mesh demister 7 is arranged inside the separation zone 2. In a specific application scenario, both ends of the wire mesh demister 7 are connected to the inner wall of the separation zone 2, and the length of the wire mesh demister 7 is basically equal to the width of the separation zone 2; in addition, the top end of the wire mesh demister 7 is penetrated by the discharge end 61 of the liquid collector 6. When the mixed gas with foam passes through the wire mesh demister 7, due to the inertial effect of the foam, the foam comes into contact with the wire mesh demister 7, and the foam will adhere to the wire mesh demister 7; subsequently, due to the wettability and surface tension of the wire mesh demister 7, the foam spreads and aggregates to form larger foam, and under the action of gravity, the foam separates from the wire mesh demister 7 and then falls to the liquid ammonia outlet 21, thereby suppressing the generation of foam in the separation zone 2.

[0057] To discharge the non-condensable gas in the separation zone 2, a first gas outlet 22 is arranged in the separation zone 2. In a specific application scenario, the first gas outlet 22 is arranged in the upper part of the separation zone 2; and, the first gas outlet 22 is located above the wire mesh demister 7; as shown in the appendix Figure 1As shown, the gas in this embodiment moves along the second direction A1 (thin arrow). During this process, the mixed gas entering from the first air inlet 11 sequentially passes through the chamber 14 of the condensation zone 1, the upper tube sheet 3, the pipeline 4, the lower tube sheet 5, and the liquid collector 6 in the separation zone 2, and then moves to the bottom of the separation zone 2; the non-condensable gas in the mixed gas will move upward from the bottom of the separation zone 2, pass through the wire mesh demister 7, and finally the non-condensable gas flows out from the first air outlet 22, thus achieving the purpose of discharging the non-condensable gas in the separation zone 2.

[0058] Those skilled in the art can understand that unless specifically stated otherwise, the singular forms "a", "an", and "the" used in this embodiment may also include the plural forms. It should be further understood that the term "comprising" used in this embodiment means that there are the described features, integers, steps, operations, elements, and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or their groups. It should be understood that when we say that an element is "connected" or "coupled" to another element, it can be directly connected or coupled to other elements, or there may also be intermediate elements. In addition, the "connection" or "coupling" used here may include wireless connection or wireless coupling. The phrase "and / or" used here includes all or any unit and all combinations of one or more related listed items.

Claims

1. Ammonia synthesis condenser separator, characterized in that, Comprising: A condensation zone (1) is provided with a first air inlet (11), and a cold source inlet (12) and a cold source outlet (13) are arranged on one side of the condensation zone (1); a separation zone (2) is located downstream of the condensation zone (1) and is adjacent to the condensation zone (1), and a liquid ammonia outlet (21) is arranged at the bottom end of the separation zone (2); a pipeline (4) has one end communicated with the first air inlet (11) and the other end passing through the condensation zone (1) and located in the separation zone (2); wherein, the pipeline (4) has at least a plurality of bending sections.

2. The ammonia synthesis condenser separator according to claim 1, characterized in that, The pipeline (4) is a spiral coiled pipe.

3. The ammonia synthesis condenser separator according to claim 2, characterized in that, Further comprising: An upper tube sheet (3) is arranged in the condensation zone (1), and the outer wall of the upper tube sheet (3) is connected with the inner wall of the condensation zone (1), so that a chamber (14) is formed in the condensation zone (1) above the upper tube sheet (3), and the first air inlet (11) is communicated with the chamber (14); at least one second air inlet (31) is formed in the upper tube sheet (3), and the upper end of the pipeline (4) is connected with the second air inlet (31).

4. The ammonia synthesis condenser-separator according to claim 3, wherein, Further comprising: A lower tube sheet (5) is arranged in the condensation zone (1) and is located downstream of the upper tube sheet (3), and the outer wall of the lower tube sheet (5) is connected with the inner wall of the condensation zone (1), so that a region (15) for cold source circulation is formed in the condensation zone (1) between the upper tube sheet (3) and the lower tube sheet (5); at least one second air outlet (51) is formed in the lower tube sheet (5), and the lower end of the pipeline (4) is connected with the second air outlet (51).

5. The ammonia synthesis condenser-separator according to any one of claims 2-4, characterized in that, The number of the pipelines (4) is multiple, and the multiple pipelines (4) intersect with each other.

6. The ammonia synthesis condenser-separator according to claim 1, wherein, Further comprising: A liquid collector (6) has an open collecting end (60) and a discharging end (61) with a smaller size relative to the collecting end (60); the liquid collector (6) is arranged in the separation zone (2), and the collecting end (60) of the liquid collector (6) is arranged opposite to the lower end of the pipeline (4) for collecting the liquid conveyed by the pipeline (4).

7. The ammonia synthesis condenser-separator according to claim 6, wherein, Further comprising: A wire mesh demister (7); the wire mesh demister (7) is arranged in the separation zone (2), and the discharging end (61) of the liquid collector (6) passes through the wire mesh demister (7).

8. The ammonia synthesis condenser-separator according to claim 7, characterized in that: A first air outlet (22) is arranged in the upper part of the separation zone (2); the first air outlet (22) is located above the wire mesh demister (7).

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