Emergency ammonia discharge and ammonia recovery system

Abstract

The utility model belongs to the technical field of emergency ammonia discharge and ammonia recovery, and particularly discloses an emergency ammonia discharge and ammonia recovery system which comprises an emergency ammonia discharge pipeline, and the emergency ammonia discharge pipeline comprises a personnel organization ammonia discharge group and a liquid ammonia equipment gas phase ammonia discharge group. The personnel organization ammonia discharge group comprises a personnel organization ammonia discharge pipeline, a personnel organization ammonia discharge pressure control valve and a personnel organization ammonia discharge gas-liquid separation tank which are connected in sequence; the liquid ammonia equipment gas phase ammonia discharge group comprises a liquid ammonia equipment gas phase ammonia discharge pipeline, a liquid ammonia equipment gas phase ammonia discharge pressure control valve and a liquid ammonia equipment gas phase ammonia discharge gas-liquid separation tank; ammonia outlets of the personnel organization leaked ammonia gas-liquid separation tank and the liquid ammonia equipment gas phase leaked ammonia gas-liquid separation tank are connected with an ammonia water absorption tank, an ammonia outlet of the liquid ammonia recovery tank is connected with the ammonia water absorption tank, an ammonia water circulation group is arranged on the ammonia water absorption tank, and a self-circulation group is arranged on the liquid ammonia recovery tank; environmental thermal pollution possibly caused by extensive ammonia release is reduced; meanwhile, the property loss is reduced by recovering materials.

Description

Technical Field

[0001] The utility model relates to the technical field of emergency ammonia discharge and ammonia recovery, in particular to an emergency ammonia discharge and ammonia recovery system. Background Art

[0002] Liquid ammonia is a colorless liquid with a strong, pungent odor. As an important chemical raw material, ammonia is typically converted from gaseous ammonia into liquid form by pressurizing or cooling it for ease of transportation and storage.

[0003] In the past, China's environmental protection requirements were relatively low, and factory personnel generally used primitive methods such as water spraying to dilute leaked liquid ammonia and then store or drain it. However, this method did not meet environmental protection requirements. Furthermore, given that coal chemical production is often a continuous, high-volume process, recovering leaked liquid ammonia can improve economic returns, reduce pollution, and maximize material recovery. Summary of the Invention

[0004] The purpose of the present invention is to provide an emergency ammonia release and ammonia recovery system to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an emergency ammonia discharge and ammonia recovery system, including an emergency ammonia discharge pipeline, the emergency ammonia discharge pipeline includes a personnel-organized ammonia discharge group and a liquid ammonia equipment gas-phase ammonia discharge group, the personnel-organized ammonia discharge group includes a personnel-organized ammonia discharge pipeline, a personnel-organized ammonia discharge pressure control valve, and a personnel-organized ammonia discharge gas-liquid separation tank connected in sequence, and the liquid ammonia equipment gas-phase ammonia discharge group includes a liquid ammonia equipment gas-phase ammonia discharge pipeline, a liquid ammonia equipment gas-phase ammonia discharge pressure control valve, and a liquid ammonia equipment gas-phase ammonia discharge gas-liquid separation tank.

[0006] The ammonia outlet of the personnel-organized ammonia gas-liquid separation tank and the liquid ammonia equipment gas-phase ammonia gas-liquid separation tank is connected to an ammonia water absorption tank, the liquid ammonia outlet of the personnel-organized ammonia gas-liquid separation tank is connected to a water cooler, the brine inlet connected to the water cooler is connected to a desalted water feed flow regulating valve, the brine outlet of the water cooler is connected to a spray head in the ammonia water absorption tank, and the water cooler is connected to the ammonia water absorption tank; the liquid ammonia outlet of the gas-phase ammonia gas-liquid separation tank of the liquid ammonia equipment is connected to a liquid ammonia cooling heat exchanger, the liquid ammonia cooling heat exchanger is connected to a liquid ammonia recovery tank, the ammonia outlet of the liquid ammonia recovery tank is connected to an ammonia water absorption tank, an ammonia water circulation group is provided on the ammonia water absorption tank, and a self-circulation group is provided on the liquid ammonia recovery tank.

[0007] The decompressed material enters the corresponding gas-liquid separator for flash evaporation and gas-liquid separation. The separated low-temperature ammonia gas is sent to the ammonia absorption tank through the gas phase pipeline to contact with the cooled desalted water. After being absorbed, it becomes ammonia water and circulates in the ammonia absorption tank for concentration.

[0008] As a preferred embodiment of the present invention, the ammonia water circulation group includes an ammonia water circulation heat exchanger, an ammonia water circulation pump, and an ammonia water circulation cooler. The ammonia water circulation pump is connected to the ammonia water outlet of the ammonia water absorption tank, and the ammonia water circulation pump, the ammonia water circulation heat exchanger, and the ammonia water circulation cooler are connected in sequence. The ammonia water circulation cooler is connected to the circulating water inlet of the ammonia water absorption tank. The cooled desalted water enters the upper part of the ammonia water absorption tank through a pipeline and is sprayed into the tank to contact with ammonia gas to absorb ammonia gas. After that, the ammonia water is buffered in the ammonia water absorption tank. The ammonia water is circulated to the ammonia water circulation heat exchanger through the ammonia water circulation pump and then circulated to the ammonia water absorption tank for concentration.

[0009] As a preferred embodiment of the present invention, the self-circulation group includes a liquid ammonia pump and a liquid ammonia self-circulation switch valve. The liquid ammonia pump is connected to the liquid ammonia outlet of the liquid ammonia recovery tank. The circulation pump is connected to the ammonia water circulation heat exchanger and the liquid ammonia self-circulation switch valve through a liquid ammonia cooling heat exchanger. The liquid ammonia self-circulation switch valve is connected to the liquid ammonia recovery tank. The liquid ammonia self-circulation switch valve can return the liquid ammonia to the liquid ammonia recovery tank.

[0010] As a preferred feature of the present invention, a liquid ammonia external feed valve is connected to the ammonia circulation heat exchanger, and an ammonia external feed valve is installed between the ammonia circulation pump and the ammonia circulation heat exchanger. Opening the liquid ammonia external feed valve allows liquid ammonia to be delivered to liquid ammonia storage or related receiving equipment within the plant. The ammonia external feed valve is used to deliver ammonia to ammonia storage or related receiving equipment. The liquid ammonia external feed valve and the liquid ammonia self-circulation valve are remotely controlled via the DCS and feature interlocking mechanisms.

[0011] As a preferred embodiment of the present invention, the personnel-organized ammonia discharge pressure control valve is provided with a personnel-organized ammonia discharge pressure remote gauge, the liquid ammonia equipment gas-phase ammonia discharge pressure control valve is connected to a liquid ammonia equipment gas-phase ammonia discharge pressure remote gauge, and the desalted water feed flow regulating valve is connected to a desalted water feed flow meter. The personnel-organized ammonia discharge pressure remote gauge and the liquid ammonia equipment gas-phase ammonia discharge pressure remote gauge are used to set pressure, while the desalted water feed flow meter is used to set a flow value to control flow.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] The utility model effectively recovers liquid ammonia that needs to be discharged urgently in case of accidents, reduces the environmental thermal pollution that may be caused by crude ammonia discharge, and at the same time recovers materials to reduce property losses; by utilizing the characteristic that liquid ammonia will reduce pressure and cause flash evaporation during discharge, its cooling capacity is recovered to realize ammonia water recovery, saving energy consumption while recovering ammonia water and reducing property losses. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic structural diagram of the utility model.

[0015] In the figure: 101, personnel organization ammonia discharge pipeline; 102, liquid ammonia equipment gas phase ammonia discharge pipeline; 201, personnel organization ammonia discharge pressure control valve; 202, liquid ammonia equipment gas phase ammonia discharge pressure control valve; 301, personnel organization ammonia discharge pressure remote meter; 302, liquid ammonia equipment gas phase ammonia discharge pressure remote meter; 401, personnel organization ammonia discharge gas-liquid separation tank; 402, liquid ammonia equipment gas phase ammonia discharge gas-liquid separation tank; 5, water cooler; 6, desalted water feed flow meter; 7, desalted water feed flow regulating valve; 8, liquid ammonia recovery tank; 9, liquid ammonia pump; 10, liquid ammonia maintenance heat exchanger; 11, ammonia water circulation heat exchanger; 12, liquid ammonia delivery switch valve; 13, liquid ammonia self-circulation switch valve; 14, ammonia water absorption tank; 15, ammonia water circulation pump; 16, ammonia water circulation cooler; 17, ammonia water delivery switch valve. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0017] In the description of the present invention, it should be noted that the terms "vertical", "up", "down", "horizontal", etc. indicating orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0018] It should also be noted that, in the description of this utility model, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to mechanical connections or electrical connections; they may refer to direct connections or indirect connections through an intermediate medium; and they may refer to internal communication between two components. Those skilled in the art will be able to understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0019] See also Figure 1The utility model provides a technical solution: an emergency ammonia discharge and ammonia recovery system, including an emergency ammonia discharge pipeline, the emergency ammonia discharge pipeline includes a personnel-organized ammonia discharge group and a liquid ammonia equipment gas-phase ammonia discharge group, the personnel-organized ammonia discharge group includes a personnel-organized ammonia discharge pipeline 101, a personnel-organized ammonia discharge pressure control valve 201, and a personnel-organized ammonia discharge gas-liquid separation tank 401 connected in sequence, and the liquid ammonia equipment gas-phase ammonia discharge group includes a liquid ammonia equipment gas-phase ammonia discharge pipeline 102, a liquid ammonia equipment gas-phase ammonia discharge pressure control valve 202, and a liquid ammonia equipment gas-phase ammonia discharge gas-liquid separation tank 402.

[0020] Furthermore, the ammonia outlet of the ammonia gas-liquid separation tank 401 and the liquid ammonia equipment gas-phase ammonia gas-liquid separation tank 402 is connected to the ammonia water absorption tank 14, the liquid ammonia outlet of the ammonia gas-liquid separation tank 401 is connected to the water cooler 5, the brine inlet connected to the water cooler 5 is connected to the desalted water feed flow regulating valve 7, the brine outlet of the water cooler 5 is connected to the spray head in the ammonia water absorption tank 14, and the water cooler 5 is connected to the ammonia water absorption tank 14; the liquid ammonia outlet of the liquid ammonia equipment gas-phase ammonia gas-liquid separation tank 402 is connected to the liquid ammonia cooling heat exchanger 10, the liquid ammonia cooling heat exchanger 10 is connected to the liquid ammonia recovery tank 8, the ammonia outlet of the liquid ammonia recovery tank 8 is connected to the ammonia water absorption tank 14, the ammonia water absorption tank 14 is provided with an ammonia circulation group, and the liquid ammonia recovery tank 8 is provided with a self-circulation group.

[0021] The decompressed material enters the corresponding gas-liquid separator for flash evaporation and gas-liquid separation. The separated low-temperature ammonia gas is sent to the ammonia absorption tank 14 through the gas phase pipeline to contact with the cooled desalted water, and is absorbed and converted into ammonia water, which is circulated and concentrated in the ammonia absorption tank 14.

[0022] Furthermore, the ammonia water circulation group includes an ammonia water circulation heat exchanger 11, an ammonia water circulation pump 15, and an ammonia water circulation cooler 16. The ammonia water circulation pump 15 is connected to the ammonia water outlet of the ammonia water absorption tank 14. The ammonia water circulation pump 15, the ammonia water circulation heat exchanger 11, and the ammonia water circulation cooler 16 are connected in sequence. The ammonia water circulation cooler 16 is connected to the circulating water inlet of the ammonia water absorption tank 14. The cooled desalted water will enter the upper part of the ammonia water absorption tank 14 through a pipeline and be sprayed into the tank to contact with ammonia gas, absorb ammonia gas, and then buffer ammonia in the ammonia water absorption tank 14. The ammonia water is circulated to the ammonia water circulation heat exchanger 11 through the ammonia water circulation pump 15 and then circulated to the ammonia water absorption tank 14 for ammonia concentration.

[0023] Furthermore, the self-circulation group includes a liquid ammonia pump 9 and a liquid ammonia self-circulation switch valve 13. The liquid ammonia pump 9 is connected to the liquid ammonia outlet of the liquid ammonia recovery tank 8. The circulation pump is connected to the ammonia water circulation heat exchanger 11 and the liquid ammonia self-circulation switch valve 13 through the liquid ammonia cooling heat exchanger 10. The liquid ammonia self-circulation switch valve 13 is connected to the liquid ammonia recovery tank 8. The liquid ammonia self-circulation switch valve 13 can return the liquid ammonia to the liquid ammonia recovery tank 8.

[0024] Furthermore, the ammonia water circulation heat exchanger 11 is connected to a liquid ammonia export valve 12, and an ammonia water export valve 17 is installed between the ammonia water circulation pump 15 and the ammonia water circulation heat exchanger 11. Opening the liquid ammonia export valve 12 allows liquid ammonia to be delivered to the plant's liquid ammonia storage or related receiving equipment, while opening the ammonia water export valve 17 allows ammonia to be delivered to ammonia storage or related receiving equipment. The liquid ammonia export valve 12 and the liquid ammonia self-circulation valve 13 are remotely controlled via the DCS and feature interlocking mechanisms.

[0025] Furthermore, a remote pressure gauge 301 for ammonia discharge from personnel organizations is provided on the pressure control valve 201 for ammonia discharge from personnel organizations. A remote pressure gauge 302 for ammonia discharge from liquid ammonia equipment gas-phase ammonia discharge is connected to the pressure control valve 202 for ammonia discharge from liquid ammonia equipment. A desalted water feed flow meter 6 is connected to the desalted water feed flow regulating valve 7. The remote pressure gauge 301 for ammonia discharge from personnel organizations and the remote pressure gauge 302 for ammonia discharge from liquid ammonia equipment gas-phase ammonia discharge are used to set pressure, while the desalted water feed flow meter 6 is used to set a flow value to control flow.

[0026] This system is connected to a pressure-regulating valve assembly via an emergency ammonia discharge line from the liquid ammonia plant. The material in the personnel ammonia discharge line 101 is depressurized by the personnel ammonia discharge pressure control valve 201 and enters the personnel ammonia discharge gas-liquid separator 401. The material in the liquid ammonia plant gas-phase ammonia discharge line 102 is depressurized by the liquid ammonia plant gas-phase ammonia discharge pressure control valve 202 and enters the liquid ammonia plant gas-phase ammonia discharge gas-liquid separator 402. The material enters the corresponding gas-liquid separator for flash evaporation and gas-liquid separation. The separated low-temperature ammonia gas is then delivered via a gas-phase pipeline to the ammonia absorption tank 14, where it comes into contact with cooled desalted water, absorbed and converted into ammonia water, which is then circulated and concentrated in the ammonia absorption tank 14. The low-temperature liquid ammonia in the gas-liquid separation tank 401 for ammonia discharge from personnel organizations is sent to the water cooler 5 through a pipeline. In the water cooler 5, the low-temperature liquid ammonia is heat-exchanged with the desalted water from the pipeline network. The desalted water with reduced temperature enters the ammonia absorption tank 14 through a pipeline to contact and absorb the low-temperature ammonia separated from the gas-liquid separation tank 401 for ammonia discharge from personnel organizations and the gas-phase ammonia separation tank 402 for ammonia discharge from liquid ammonia equipment.

[0027] The desalted water is connected to the desalted water feed flow meter 6 via a pipeline. The desalted water feed flow meter 6 controls the desalted water feed flow regulating valve 7 with the set flow value (or by adding a thermometer in series control).

[0028] The low-temperature liquid ammonia from the personnel organization ammonia gas-liquid separation tank 401 and the liquid ammonia equipment gas phase ammonia gas-liquid separation tank 402 enters the liquid ammonia recovery tank 8 for buffering. At this time, the buffered liquid ammonia can be pressurized by the liquid ammonia pump 9 and then enter the liquid ammonia cooling heat exchanger 10 for cooling and then sent to the ammonia water circulation heat exchanger 11 to cool the circulating ammonia water. Then, the liquid ammonia is sent to the plant area liquid ammonia storage or related receiving equipment through the opened liquid ammonia delivery switch valve 12; it can also be returned inside through the liquid ammonia self-circulation switch valve 13, then the liquid ammonia cooling heat exchanger 10 will fail, and the ammonia water circulation cooler 16 will be put into use.

[0029] Personnel organize the low-temperature ammonia gas separated in the ammonia gas-liquid separator tank 401 and the liquid ammonia equipment gas-phase ammonia gas-liquid separator tank 402, as well as the exhaust gas from the liquid ammonia recovery tank 8, to be delivered to the ammonia absorption tank 14 via pipelines. Cooled desalted water will enter the upper portion of the ammonia absorption tank 14 through a pipeline, where it will be sprayed into the tank, where it will come into contact with the ammonia gas and absorb the ammonia. Ammonia will then be buffered in the ammonia absorption tank 14. The ammonia will then be circulated by the ammonia circulation pump 15 to the ammonia circulation heat exchanger 11 (or / and 16 - the ammonia circulation cooler 16), and then to the ammonia absorption tank 14 for concentration. Once the emergency ammonia discharge is complete, the ammonia delivery valve 17 can be opened to deliver the ammonia to ammonia storage or related receiving equipment for subsequent operations.

[0030] In summary, the present invention sets two pipelines for collecting the ammonia leakage pipeline organized by personnel and the material discharged from the gas phase pipeline respectively.

[0031] Liquid ammonia released from the gas phase pipeline passes through a pressure reducing valve and enters the separator tank. The reduced-pressure material then flashes and separates into gas and liquid in a flash tank. Ammonia production plants are typically pressurized, and the associated pipelines are also pressurized. If the gas phase pipeline is not pressurized, pressure control can be placed on the separator tank's gas phase pipeline during the modification. The flashed material cools down, lowering the internal temperature of the equipment. The low-temperature ammonia gas is discharged into the ammonia water tank. The low-temperature liquid phase passes through a primary pressure reducing valve, further reducing its pressure to a lower temperature. It then exchanges heat with the liquid ammonia discharged from the liquid ammonia collection tank, thus lowering the temperature of the pressurized liquid ammonia product. If the material is not being discharged externally, this cooling capacity can be used to circulate refrigeration to keep the liquid ammonia stored in the tank at a low temperature during the ammonia discharge process. The liquid ammonia can be discharged to a designated emergency tank or other storage container for further processing. If there is no other discharge location for the liquid ammonia, it can be recycled and stored in the tank. The short-term circulation provided by the cooler effectively maintains the stability of the liquid ammonia. Discharge and recirculation can be remotely switched via an on / off valve, and the two valves are interlocked to prevent operational errors.

[0032] Personnel organize the material for ammonia discharge to pass through another pipeline and a set pressure regulating valve, and then enter the corresponding gas-liquid separation tank after further pressure reduction. After the material is flashed in the flash tank, the pressure of the liquid phase will be reduced to obtain low-temperature liquid ammonia. This part of the liquid ammonia will be sent to the water cooler 5 to exchange heat with the desalted water sent in by the external pipe network. After the temperature of this desalted water is significantly reduced after heat exchange with low-temperature liquid ammonia, it is sent to the ammonia pipe to absorb ammonia gas, thereby obtaining ammonia water. Using the temperature of liquid ammonia to lower the temperature of water can improve the efficiency of ammonia recovery and ensure that the ammonia components in the exhaust gas meet the emission standards. At the same time, the liquid ammonia is equipped with a circulating absorption system. The temperature of the liquid ammonia will rise during the circulation process. This part of the heat can be removed by pressurizing the low-temperature liquid ammonia; if the liquid ammonia tank enters the self-circulation mode, the heat source can be removed by an external cold source heat exchanger, thereby obtaining an ammonia solution of nearly 20%wt.

[0033] In summary, the low-temperature ammonia gas will be sent to the ammonia water absorption tank 14, and the low-temperature liquid ammonia will provide a cold source to stabilize the temperature, thereby reducing energy consumption while obtaining 20%wt ammonia water and recovering low-temperature liquid ammonia, effectively reducing the economic losses of the factory.

[0034] It is worth noting that the entire device is controlled by a master control button. Since the devices matched with the control button are commonly used devices and belong to existing mature technologies, their electrical connection relationships and specific circuit structures will not be described in detail here.

[0035] Although the 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 variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An emergency ammonia release and ammonia recovery system, characterized by: The emergency ammonia discharge pipeline includes a personnel-organized ammonia discharge group and a liquid ammonia equipment gas-phase ammonia discharge group. The personnel-organized ammonia discharge group includes a personnel-organized ammonia discharge pipeline (101), a personnel-organized ammonia discharge pressure control valve (201), and a personnel-organized ammonia discharge gas-liquid separation tank (401) connected in sequence. The liquid ammonia equipment gas-phase ammonia discharge group includes a liquid ammonia equipment gas-phase ammonia discharge pipeline (102), a liquid ammonia equipment gas-phase ammonia discharge pressure control valve (202), and a liquid ammonia equipment gas-phase ammonia discharge gas-liquid separation tank (402). The ammonia outlets of the gas-liquid separation tank (401) for the personnel organization ammonia discharge and the gas-liquid separation tank (402) for the liquid ammonia equipment are connected to an ammonia water absorption tank (14); the liquid ammonia outlet of the gas-liquid separation tank (401) for the personnel organization ammonia discharge is connected to a water cooler (5); the brine inlet connected to the water cooler (5) is connected to a desalted water feed flow regulating valve (7); the brine outlet of the water cooler (5) is connected to a spray head in the ammonia water absorption tank (14), and the water cooler (5) is connected to the ammonia water absorption tank (14); the liquid ammonia outlet of the gas-liquid separation tank (402) for the liquid ammonia equipment is connected to a liquid ammonia cooling heat exchanger (10); the liquid ammonia cooling heat exchanger (10) is connected to a liquid ammonia recovery tank (8); the ammonia outlet of the liquid ammonia recovery tank (8) is connected to an ammonia water absorption tank (14); an ammonia water circulation group is provided on the ammonia water absorption tank (14), and a self-circulation group is provided on the liquid ammonia recovery tank (8).

2. The emergency ammonia release and ammonia recovery system according to claim 1, characterized in that: The ammonia water circulation group comprises an ammonia water circulation heat exchanger (11), an ammonia water circulation pump (15) and an ammonia water circulation cooler (16), wherein the ammonia water circulation pump (15) is connected to the ammonia water outlet of the ammonia water absorption tank (14), and the ammonia water circulation pump (15), the ammonia water circulation heat exchanger (11) and the ammonia water circulation cooler (16) are connected in sequence, and the ammonia water circulation cooler (16) is connected to the circulating water inlet of the ammonia water absorption tank (14).

3. The emergency ammonia release and ammonia recovery system according to claim 1, characterized in that: The self-circulation group includes a liquid ammonia pump (9) and a liquid ammonia self-circulation switch valve (13), the liquid ammonia pump (9) is connected to the liquid ammonia outlet of the liquid ammonia recovery tank (8), and the circulation pump is connected to the ammonia water circulation heat exchanger (11) and the liquid ammonia self-circulation switch valve (13) through the liquid ammonia cooling heat exchanger (10), and the liquid ammonia self-circulation switch valve (13) is connected to the liquid ammonia recovery tank (8).

4. The emergency ammonia release and ammonia recovery system according to claim 1, characterized in that: The ammonia water circulation heat exchanger (11) is connected to a liquid ammonia external delivery switch valve (12), and an ammonia water external delivery switch valve (17) is provided between the ammonia water circulation pump (15) and the ammonia water circulation heat exchanger (11).

5. The emergency ammonia release and ammonia recovery system according to claim 1, characterized in that: The personnel-organized ammonia discharge pressure control valve (201) is provided with a personnel-organized ammonia discharge pressure remote meter (301), the liquid ammonia equipment gas-phase ammonia discharge pressure control valve (202) is connected to a liquid ammonia equipment gas-phase ammonia discharge pressure remote meter (302), and the desalted water feed flow regulating valve (7) is connected to a desalted water feed flow meter (6).

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