Synthesis ammonia condensing separator

Abstract

The utility model discloses a synthetic ammonia condensing separator, including synthetic tower and feeding pipe, the synthetic tower one side is provided with two separation boxes, the feeding pipe bottom is between two the separation box, two the separation box top all are installed with the air inlet elbow pipe of penetrating type, the feeding pipe bottom is installed with electromagnetic reversing valve, and two air inlet elbow pipes all are installed in electromagnetic reversing valve corresponding one side, the air inlet elbow pipe one end is in the inside corresponding the separation box, two the separation box top all are installed exhaust pipe, and the separation box one side is provided with the liquid discharge hole, through the design of double separation box parallel connection and cooperation electromagnetic reversing valve switching, make mixed gas into another separation box, realize no shutdown maintenance, guarantee device continuous operation, and this double separation box parallel connection and cooperation electromagnetic reversing valve switching's design have solved the problem that traditional single condensing separator needs to stop maintenance and leads to production interruption, high operation and maintenance cost.

Description

Technical Field

[0001] This utility model relates to the field of condenser separator technology, specifically a synthetic ammonia condenser separator. Background Technology

[0002] In the ammonia synthesis process, the condenser separator is a key piece of equipment used to separate ammonia from unreacted nitrogen and hydrogen in the mixed gas at the outlet of the synthesis tower, enabling ammonia recovery and feed gas recycling. In existing technologies, condenser separators are mostly operated as single units. Their internal components, such as heat exchange tubes and demisters, are prone to decreased separation efficiency due to impurity deposition and corrosion after long-term operation, requiring periodic shutdowns for maintenance. However, ammonia synthesis plants typically require long-term continuous operation. Shutdowns not only interrupt the production process and reduce plant capacity but also involve complex operations such as depressurization and purging, taking 1-3 days and significantly increasing maintenance costs. Furthermore, single separators have poor adaptability to load fluctuations; low loads easily lead to increased gas-liquid losses, while high loads can cause liquid carryover in the gas phase, affecting separation efficiency and the safety of downstream equipment. Simultaneously, traditional maintenance methods require complete shutdown, making it impossible to replace and clean components while ensuring production continuity, thus hindering improvements in plant operating efficiency and stability. Therefore, this utility model provides a synthetic ammonia condenser separator. Utility Model Content

[0003] This invention provides a synthetic ammonia condenser separator, which aims to solve the problems mentioned in the background art.

[0004] To solve the above problems, this utility model is implemented through the following technical solution: a synthetic ammonia condenser separator, including a synthesis tower and a feeding pipe, two separation boxes are arranged on one side of the synthesis tower, the bottom of the feeding pipe is located between the two separation boxes, an inlet bend is installed through the top of each of the two separation boxes, an electromagnetic reversing valve is installed at the bottom of the feeding pipe, the two inlet bends are installed on the corresponding side of the electromagnetic reversing valve, one end of the inlet bend is located inside the corresponding separation box, an exhaust pipe is installed on the top of each of the two separation boxes, a drain hole is opened on one side of the separation box, the drain hole is lower than the exhaust pipe and higher than the discharge end of the inlet bend.

[0005] Preferably, the two intake bends have several air outlets on their outer sides, and the air outlets are arranged in a circular array.

[0006] Preferably, an overflow pipe is installed on one side of each of the two separation boxes, and the overflow pipe is positioned corresponding to the drain hole. A storage box is installed between the two separation boxes, and the separation box is installed on top of the storage box. Both overflow pipes are connected to the internal space of the storage box. A support plate is installed on the top of the storage box, and an air pump is installed on one side of the support plate, with the air pump positioned corresponding to the feed pipe.

[0007] Preferably, a polytetrafluoroethylene (PTFE) microporous membrane is provided at the end of the overflow pipe, and the PTFE microporous membrane is installed in the corresponding drain hole.

[0008] Preferably, both exhaust pipes are equipped with laser ammonia content analyzers, and the inner wall of the separation chamber is equipped with a downward-extending baffle that separates the internal space of the separation chamber, with a gap between the downward-extending baffle and the bottom inner wall of the separation chamber.

[0009] Preferably, a manifold is installed between the ends of the two exhaust pipes, a tailpipe is installed in the middle of one side of the manifold, and two one-way valves are installed inside the manifold, with the positions of the two one-way valves corresponding to the two exhaust pipes respectively.

[0010] Beneficial effects Compared with the prior art, the present invention has the following advantages: This invention utilizes a design with two parallel separation chambers connected in parallel and a solenoid directional valve for switching, allowing the mixed gas to be introduced into another separation chamber. This enables maintenance without shutting down the unit and ensures continuous operation of the device. This design with two parallel separation chambers connected in parallel and a solenoid directional valve for switching solves the problem of production interruption and high maintenance costs caused by the need to shut down the traditional single condenser separator for maintenance. Attached Figure Description

[0011] Figure 1 This is one of the three-dimensional structural schematic diagrams of this utility model; Figure 2 This is the second three-dimensional structural schematic diagram of this utility model; Figure 3 This is an enlarged cross-sectional structural diagram of the separation box in this utility model; Figure 4 This is the utility model Figure 2 A magnified structural diagram of part A in the middle.

[0012] In the diagram: 1. Synthesis tower; 11. Feed pipe; 12. Electromagnetic reversing valve; 2. Separation box; 21. Inlet bend; 211. Outlet; 23. Exhaust pipe; 231. Laser ammonia content analyzer; 24. Overflow pipe; 241. PTFE microporous membrane; 25. Downward-extending baffle; 26. Combination pipe; 261. Tail pipe; 3. Storage box; 31. Support plate; 32. Air pump. Detailed Implementation

[0013] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0014] Please see Figure 1-4 A synthetic ammonia condenser includes a synthesis tower 1 and a feed pipe 11. Two separation boxes 2 are arranged on one side of the synthesis tower 1. The bottom of the feed pipe 11 is located between the two separation boxes 2. An inlet bend 21 is installed through the top of each of the two separation boxes 2. An electromagnetic reversing valve 12 is installed at the bottom of the feed pipe 11. The two inlet bends 21 are installed on the corresponding side of the electromagnetic reversing valve 12. One end of the inlet bend 21 is inside the corresponding separation box 2. An exhaust pipe 23 is installed on the top of each of the two separation boxes 2. A drain hole is opened on one side of the separation box 2. The drain hole is lower than the exhaust pipe 23 and higher than the discharge end of the inlet bend 21.

[0015] Specifically, during operation, the mixed gas discharged from synthesis tower 1 is transported via feed pipe 11. The electromagnetic reversing valve 12 allows for flexible switching, enabling the mixed gas to enter the inlet bend 21 of one of the separation chambers 2. Several circumferentially arrayed outlet holes 211 on the inlet bend 21 allow the mixed gas to enter the separation chamber 2 evenly. The separation chamber 2 has a built-in refrigeration device to cool the ammonia gas, facilitating its condensation and separation. The ammonia gas merges with the ammonia water in the separation chamber 2, and the separated liquid ammonia accumulates at the bottom of the separation chamber 2. When the liquid ammonia level reaches the height of the drain hole... The collected gas is discharged through the drain hole, while unreacted nitrogen, hydrogen, etc. are discharged through the exhaust pipe 23. The laser ammonia content analyzer 231 on the exhaust pipe 23 can monitor the ammonia content in the exhaust gas in real time. When one of the separation tanks 2 needs maintenance, the mixed gas is switched through the electromagnetic reversing valve 12 to allow maintenance without shutting down the machine, ensuring continuous operation of the unit. This design of two separation tanks 2 connected in parallel and switched by the electromagnetic reversing valve 12 solves the problem of production interruption and high maintenance costs caused by the need to shut down the traditional single condenser separator for maintenance.

[0016] In one embodiment of this utility model, such as Figures 1-4 As shown, several air outlets 211 are provided on the outer side of the discharge end of the two air inlet bends 21, and the air outlets 211 are distributed in a circular array.

[0017] Specifically, the several air outlets 211 arranged in a circular array on the outer side of the exhaust end of the inlet bend 21 allow the mixed gas delivered from the synthesis tower 1 via the feed pipe 11 and the electromagnetic reversing valve 12 to be discharged evenly from multiple directions when entering the separation box 2. This allows the mixed gas to come into more complete contact with the ammonia water in the separation box 2, improving the efficiency of ammonia condensation and separation, and enabling ammonia to be separated from the mixed gas more efficiently. It also helps to facilitate the subsequent discharge of unreacted nitrogen, hydrogen and other gases, thus contributing to the efficient operation of the entire ammonia synthesis condensation and separation process.

[0018] In one embodiment of this utility model, such as Figures 1-4 As shown, overflow pipes 24 are installed on one side of each of the two separation tanks 2, and the overflow pipes 24 correspond to the positions of the drain holes. A storage tank 3 is installed between the two separation tanks 2, and the separation tanks 2 are installed on the top of the storage tank 3. Both overflow pipes 24 are connected to the internal space of the storage tank 3. A support plate 31 is installed on the top of the storage tank 3, and an air pump 32 is installed on one side of the support plate 31, and the air pump 32 corresponds to the position of the feed pipe 11.

[0019] Specifically, when the liquid ammonia separated in the separation tank 2 reaches the height of the drain hole, the liquid ammonia will flow into the storage tank 3 for collection through the overflow pipe 24 corresponding to the drain hole. At the same time, the air pump 32 installed on the top support plate 31 of the storage tank 3, corresponding to the feed pipe 11, can play an auxiliary role in conveying the mixed gas in the feed pipe 11, helping the mixed gas discharged from the synthesis tower 1 to enter the separation tank 2 more smoothly, ensuring the stability and efficiency of gas conveying in the entire ammonia condensation and separation process, and thus, together with the separation tank 2 and the overflow pipe 24, achieving efficient separation of ammonia and orderly collection of liquid ammonia.

[0020] In one embodiment of this utility model, such as Figures 1-4 As shown, a polytetrafluoroethylene microporous membrane 241 is provided at the end of the overflow pipe 24, and the polytetrafluoroethylene microporous membrane 241 is installed in the corresponding drain hole.

[0021] Specifically, when the liquid ammonia level in the separation tank 2 reaches the height of the drain hole, the liquid ammonia will flow into the storage tank 3 through the overflow pipe 24 via the polytetrafluoroethylene microporous membrane 241 installed in the drain hole. The polytetrafluoroethylene microporous membrane 241 has the property of allowing liquid ammonia to pass through while intercepting unreacted nitrogen, hydrogen and other gaseous substances. This not only enables the smooth collection of liquid ammonia, but also prevents gaseous nitrogen, hydrogen and other substances from leaking out of the storage tank 3 through the overflow pipe 24, thereby ensuring the purity of liquid ammonia, avoiding the waste of raw material gas, and improving the efficiency and effect of ammonia recovery.

[0022] In one embodiment of this utility model, such as Figures 1-4As shown, both exhaust pipes 23 are equipped with laser ammonia content analyzers 231, and the inner wall of the separation box 2 is equipped with a downward-extending baffle 25 that separates the internal space of the separation box 2. There is a gap between the downward-extending baffle 25 and the bottom inner wall of the separation box 2.

[0023] Specifically, there is a gap between the downward-extended baffle 25 on the inner wall of the separator 2 and the bottom inner wall of the separator 2. When the mixed gas discharged from the synthesis tower 1 enters the separator 2 through the inlet bend 21, the downward-extended baffle 25 will turbulentize the mixed gas, prolonging the residence time of the mixed gas in the separator 2, allowing the ammonia in the mixed gas to have more time for condensation and separation. At the same time, the laser ammonia content analyzer 231 installed on the two exhaust pipes 23 can monitor the ammonia content in the gas discharged from the separator 2 in real time, so as to understand the separation effect in a timely manner. If the ammonia content is abnormal, the separation process can be adjusted accordingly to ensure the efficiency and quality of ammonia recovery and raw material gas recycling.

[0024] In one embodiment of this utility model, such as Figures 1-4 As shown, a manifold 26 is installed between the ends of the two exhaust pipes 23. A tailpipe 261 is installed in the middle of one side of the manifold 26. Two one-way valves are installed inside the manifold 26, and the positions of the two one-way valves correspond to the two exhaust pipes 23 respectively.

[0025] Specifically, after the two separation tanks 2 have completed gas-liquid separation, the unreacted nitrogen, hydrogen and other raw material gases will be discharged through their respective exhaust pipes 23, and then enter the manifold 26 installed between the ends of the two exhaust pipes 23. The one-way valves in the manifold 26 corresponding to the positions of the two exhaust pipes 23 can ensure that the gas discharged from each exhaust pipe 23 flows only into the manifold 26 in one direction, avoiding gas backflow and ensuring the stability of gas transportation. Finally, the combined raw material gas is uniformly transported to the subsequent circulation system through the tail pipe 261 in the middle of one side of the manifold 26, realizing the centralized recovery and recycling of raw material gas. At the same time, in conjunction with the switching operation of the dual separation tanks 2, the continuity of ammonia synthesis production is further ensured.

[0026] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0027] Working principle: When the synthetic ammonia condenser is working, the mixed gas discharged from the synthesis tower 1 is transmitted through the feed pipe 11 and switched by the electromagnetic reversing valve 12 to enter the inlet bend 21 of one of the separation boxes 2. The circumferentially distributed air outlet holes 211 on the inlet bend 21 ensure that the mixed gas enters the separation box 2 evenly. The separation box 2 has a built-in refrigeration device to cool it down. The downward-extended baffle 25 extends the residence time of the mixed gas to promote ammonia condensation. Liquid ammonia accumulates at the bottom. When it reaches the height of the drain hole, it flows into the storage box 3 through the overflow pipe 24 with a polytetrafluoroethylene microporous membrane 241. The polytetrafluoroethylene microporous membrane 241 intercepts nitrogen and hydrogen to ensure the purity of liquid ammonia. Unreacted gas is discharged through the exhaust pipe 23. The laser ammonia content analyzer 231 monitors the ammonia content in real time. The gas is merged through the manifold 26 and the one-way valve and then sent to the subsequent circulation system through the tail pipe 261. The air pump 32 on the storage box 3 assists in the transportation of the mixed gas. When one separation tank 2 needs maintenance, the electromagnetic reversing valve 12 switches to the other separation tank 2, enabling maintenance without stopping the machine. The parallel design of the two separation tanks solves the problem of traditional single-unit machine shutdown for maintenance, and the components work together to improve separation efficiency and production continuity.

[0028] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0029] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A synthetic ammonia condenser separator, comprising a synthesis tower (1) and a feed pipe (11), characterized in that, Two separation boxes (2) are provided on one side of the synthesis tower (1). The bottom of the feed pipe (11) is located between the two separation boxes (2). An air inlet bend (21) is installed through the top of each of the two separation boxes (2). An electromagnetic reversing valve (12) is installed at the bottom of the feed pipe (11). The two air inlet bends (21) are installed on the corresponding side of the electromagnetic reversing valve (12). One end of the air inlet bend (21) is located inside the corresponding separation box (2). An exhaust pipe (23) is installed on the top of each of the two separation boxes (2). A drain hole is opened on one side of the separation box (2). The drain hole is lower than the exhaust pipe (23) and higher than the discharge end of the air inlet bend (21).

2. The synthetic ammonia condenser separator according to claim 1, characterized in that, The two intake bends (21) have several air outlets (211) on the outer side of their discharge ends, and the air outlets (211) are arranged in a circular array.

3. The synthetic ammonia condenser separator according to claim 1, characterized in that, An overflow pipe (24) is installed on one side of each of the two separation boxes (2), and the overflow pipe (24) corresponds to the position of the drain hole. A storage box (3) is installed between the two separation boxes (2), and the separation box (2) is installed on the top of the storage box (3). Both overflow pipes (24) are connected to the internal space of the storage box (3). A support plate (31) is installed on the top of the storage box (3), and an air pump (32) is installed on one side of the support plate (31), and the air pump (32) corresponds to the position of the feeding pipe (11).

4. A synthetic ammonia condenser separator according to claim 3, characterized in that, The overflow pipe (24) is provided with a polytetrafluoroethylene microporous membrane (241) at its end, and the polytetrafluoroethylene microporous membrane (241) is installed in the corresponding drain hole.

5. A synthetic ammonia condenser separator according to claim 1, characterized in that, Both exhaust pipes (23) are equipped with laser ammonia content analyzers (231), and the inner wall of the separation box (2) is equipped with a downward-extending baffle (25) that separates the internal space of the separation box (2). There is a gap between the downward-extending baffle (25) and the bottom inner wall of the separation box (2).

6. The synthetic ammonia condenser separator according to claim 1, characterized in that, A manifold (26) is installed between the ends of the two exhaust pipes (23). A tailpipe (261) is installed in the middle of one side of the manifold (26). Two one-way valves are installed inside the manifold (26), and the positions of the two one-way valves correspond to the two exhaust pipes (23) respectively.

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