Device for preparing aqueous ammonia from liquid ammonia

Abstract

The present invention relates to the technical field of aqueous ammonia preparing devices. Disclosed is a device for preparing aqueous ammonia from liquid ammonia, the device comprising: a reactor (100) having a raw-material inlet (101) and an aqueous-ammonia outlet (102) capable of discharging aqueous ammonia; a pressure relief mechanism (200) comprising an exhaust channel (201) arranged on the raw-material inlet (101) and a pressure relief valve element (202) arranged in the exhaust channel (201); an opening and closing door (300) arranged on the raw-material inlet (101); and an inlet self-locking mechanism (400). By providing the opening and closing door (300) and the inlet self-locking mechanism (400), the air pressure inside the reactor (100) becomes higher and higher due to the generation of ammonia gas and the increase in temperature, and the gas inside the reactor (100) can push the pressure relief valve element (202) to move in a first direction, such that the pressure relief valve element (202) opens the exhaust channel (201), the gas can then be discharged by means of the exhaust channel (201), and the air pressure inside the reactor (100) is reduced, and by locking the opening and closing door (300), the opening and closing door (300) cannot be opened, thereby avoiding the problem of potential safety hazards caused by excessively high air pressure inside the reactor (100).

Description

A device for producing ammonia water from liquid ammonia Technical Field

[0001] The present invention relates to the technical field of ammonia water production equipment, in particular to a liquid ammonia production equipment. Background Art

[0002] When liquid ammonia is used to produce ammonia water, liquid ammonia and liquid water are generally placed in an ammonia synthesis reactor, where the liquid ammonia and liquid water react and mix to eventually produce ammonia water.

[0003] However, when liquid ammonia and liquid water are mixed in the ammonia synthesis reactor, a large amount of ammonia gas will be produced, and the temperature inside the ammonia synthesis reactor will rise. As ammonia gas continues to be produced and the temperature rises, the gas pressure inside the ammonia synthesis reactor will rise rapidly. At this time, if liquid ammonia and liquid water are still added to the ammonia synthesis reactor, it is easy to cause the ammonia synthesis reactor to burst, causing ammonia gas and ammonia water to leak out, which will also cause environmental problems.

[0004] Summary of the Invention

[0005] The present invention is proposed in view of the problem of excessively high gas pressure inside the ammonia synthesis reactor in the above-mentioned prior art.

[0006] Therefore, the object of the present invention is to provide a device for preparing ammonia water from liquid ammonia.

[0007] In order to solve the above technical problems, the present invention provides the following technical solutions: including a reactor, which has a raw material inlet and an ammonia outlet capable of discharging ammonia; a pressure relief mechanism, which includes an exhaust channel arranged on the raw material inlet and a pressure relief valve core arranged in the exhaust channel; a switch door, which is arranged on the raw material inlet, and the switch door is provided with a switch follower; and an inlet self-locking mechanism, including a switch limiting member arranged on the raw material inlet, and a blocking member connected to the pressure relief valve core; when the pressure relief valve core moves in a first direction, the blocking member can block the switch limiting member, and the switch limiting member prevents the switch door from rotating and opening through the limit switch follower.

[0008] As a preferred embodiment of the liquid ammonia to ammonia water device of the present invention, the exhaust passage includes a gas exhaust port provided on the side wall of the raw material inlet, a pressure balance chamber opened on the inner side of the raw material inlet, and an air inlet pipe fixed on the raw material inlet; the gas exhaust port is connected with the pressure balance chamber, and the pressure balance chamber is connected with the air inlet pipe; the pressure relief valve core includes a valve rack fixed on the inner side of the pressure balance chamber, a sliding column slidably provided on the valve rack, and a blocking block provided at the end of the sliding column; when the blocking block is not subject to force, it can close the connection between the pressure balance chamber and the air inlet pipe.

[0009] As a preferred embodiment of the liquid ammonia to ammonia water device of the present invention, a side chamber is provided on the outside of the raw material inlet; the blocking member includes an extension column fixed on the blocking block, a resistance member provided on the end of the extension column, and an alignment groove provided on the resistance member; the switch limiting member includes a vertical buckle slidably provided on the inside of the side chamber, an elastic member connected to the vertical buckle, and a force bar fixed on the vertical buckle; the rotating switch follower is in contact with the force bar, and when the switch door is unfolded, the rotating switch follower can push the force bar, and the force bar can push the vertical buckle to pass through the alignment groove.

[0010] As a preferred embodiment of the liquid ammonia to ammonia water device of the present invention, the switch door comprises a door body, a connecting end provided on the door body, and an automatic rebound hinge rotatably connecting the connecting end and the raw material inlet;

[0011] The rotary switch follower is fixed on the connecting end.

[0012] As a preferred solution of the liquid ammonia to ammonia water device of the present invention, the switch limiting member further includes a connecting frame fixed in the side chamber; the vertical buckle is slidably connected to the connecting frame.

[0013] As a preferred solution of the liquid ammonia to ammonia water device of the present invention, the vertical buckle has an inclined surface, and the inclined surface is inclined to the extension direction of the interference component.

[0014] As a preferred solution of the liquid ammonia to ammonia water device of the present invention, the raw material inlet includes a liquid ammonia inlet and a water inlet.

[0015] As a preferred embodiment of the liquid ammonia to ammonia water device of the present invention, it further comprises a heat exchange mechanism, which comprises a heat exchange tube group fixed on the inner side of the reactor; a water inlet end located at one end of the heat exchange tube group, which is connected to the water inlet; a drainage end located at the other end of the heat exchange tube group, which is connected to the external space of the reactor; a side discharge assembly is provided on the side wall of the water inlet, and the water inlet end is connected to the side discharge assembly.

[0016] As a preferred embodiment of the liquid ammonia to ammonia water device of the present invention, the side discharge assembly includes a side discharge port provided on the side wall of the water inlet, a self-falling door provided on the inner side of the side discharge port, and a side discharge pipe connecting the side discharge port and the water inlet end.

[0017] As a preferred solution of the liquid ammonia to ammonia water device of the present invention, the reactor is further provided with a hot water outlet, and the drainage end is connected to the hot water outlet.

[0018] The beneficial effects of the present invention are as follows: by setting the switch door and the inlet self-locking mechanism, the generation of ammonia and the increase in temperature will cause the gas pressure inside the reactor to become increasingly higher, and the gas inside the reactor can push the pressure relief valve core to move in the first direction, so that the pressure relief valve core opens the exhaust channel, so that the gas can be discharged through the exhaust channel, reducing the gas pressure inside the reactor. By locking the switch door, the switch door cannot be opened, thereby avoiding safety hazards caused by excessive gas pressure inside the reactor. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be derived from these drawings without inventive effort. Among them:

[0020] FIG1 is a cross-sectional view of the reactor structure of the present invention.

[0021] FIG2 is a cross-sectional view of the raw material inlet structure of the present invention.

[0022] FIG3 is a schematic diagram of the position of the entrance self-locking mechanism in the present invention.

[0023] FIG4 is an enlarged view of point A in FIG3 of the present invention.

[0024] FIG5 is a schematic diagram of the internal structure of the raw material inlet in the present invention.

[0025] FIG6 is a schematic diagram of the overall structure of the present invention.

[0026] FIG7 is a schematic diagram of the structure of the water inlet and water inlet end of the present invention.

[0027] FIG8 is a schematic diagram showing the position of the side row components of the present invention.

[0028] FIG9 is an enlarged view of point B in FIG8 of the present invention.

[0029] In the figure: 100, reactor; 101, raw material inlet; 101a, water inlet; 101b, liquid ammonia inlet; 101c, side discharge assembly; 101c-1, side discharge port; 101c-2, self-falling door; 101c-3, side discharge pipe; 102, ammonia outlet; 103, side chamber; 104, hot water outlet;

[0030] 200, pressure relief mechanism; 201, exhaust channel; 201a, gas exhaust port; 201b, pressure balance chamber; 201c, intake pipe; 202, pressure relief valve core; 202a, valve rack; 202b, sliding column; 202c, blocking block;

[0031] 300, door opening and closing; 301, rotary switch follower; 302, door body; 303, connection end; 304, automatic rebound hinge;

[0032] 400, entrance self-locking mechanism; 401, switch limiting member; 401a, vertical buckle; 401a-1, inclined surface; 401b, elastic member; 401c, stress bar; 401d, connecting frame; 402, blocking member; 402a, extension column; 402b, interference member; 402c, alignment groove;

[0033] 500, heat exchange mechanism; 501, heat exchange tube group; 502, water inlet end; 503, drainage end. DETAILED DESCRIPTION

[0034] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0035] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0036] Secondly, the term "one embodiment" or "embodiment" herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in various places throughout this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive of other embodiments.

[0037] Furthermore, the present invention is described in detail with reference to schematic diagrams. For ease of illustration, when describing the embodiments of the present invention, cross-sectional views illustrating device structures may be partially enlarged and not to scale. Furthermore, the schematic diagrams are merely illustrative and should not limit the scope of protection of the present invention. Furthermore, in actual production, the three-dimensional dimensions of length, width, and depth should be included.

[0038] Example 1

[0039] 1 to 3 , a device for producing ammonia water from liquid ammonia is provided, comprising a reactor 100 having a raw material inlet 101 and an ammonia water outlet 102 capable of discharging ammonia water. When liquid ammonia is used to produce ammonia water, liquid water and liquid ammonia can be fed into the inner side of the reactor 100 through the raw material inlet 101. The liquid water and liquid ammonia are mixed in the reactor 100 to produce ammonia water. The ammonia water can be discharged to the outside of the reactor 100 through the ammonia water outlet 102 so that it can be collected and used. A valve is provided at the ammonia water outlet 102, and the ammonia water outlet 102 can be opened and closed by the valve.

[0040] The ammonia water production device of liquid ammonia includes a pressure relief mechanism 200, which includes an exhaust channel 201 provided on the raw material inlet 101, and a pressure relief valve core 202 provided in the exhaust channel 201. When liquid ammonia and liquid water are mixed inside the reactor 100, a high temperature and gas are generated. The gas is generally ammonia. In this process, as the reaction proceeds, the temperature inside the reactor 100 will become higher and higher. The generation of ammonia and the increase in temperature will cause the gas pressure inside the reactor 100 to become higher and higher. Under normal conditions, the pressure relief valve core 202 can The exhaust channel 201 is closed to prevent external impurities from entering the inner side of the reactor 100 through the exhaust channel 201. When the air pressure inside the reactor 100 increases, the air pressure inside the reactor 100 is greater than the air pressure outside the reactor 100. At this time, the pressure relief valve core 202 can be pushed to move in the first direction, so that the pressure relief valve core 202 opens the exhaust channel 201, so that the gas can be discharged through the exhaust channel 201, reducing the air pressure inside the reactor 100 and avoiding safety hazards caused by excessive air pressure inside the reactor 100.

[0041] The switch door 300 is provided on the raw material inlet 101 and is provided with a switch follower 301. The switch door 300 is in a normally closed state when not subject to external force. When liquid ammonia or liquid water enters the inner side of the raw material inlet 101, the gravity of the liquid ammonia or liquid water presses the switch door 300, causing the switch door 300 to rotate open, so that the liquid ammonia or liquid water can enter the inner side of the reactor 100.

[0042] One end of the raw material inlet 101 extends to the outside of the reactor 100, and the other end extends to the inside of the reactor 100. The end of the raw material inlet 101 outside the reactor 100 can be connected to an external water supply pipe or an external liquid ammonia supply pipe. The switch door 300 is installed at the end of the raw material inlet 101 inside the reactor 100. When adding liquid water and liquid ammonia to the inside of the reactor 100, in order to avoid adding too much at a time, which causes the gas pressure inside the reactor 100 to increase in a short time, multiple batch additions are selected.

[0043] The inlet self-locking mechanism 400 includes a switch limiting member 401 provided on the raw material inlet 101, a rotating switch follower 301 provided on the switch door 300, and a blocking member 402 connected to the pressure relief valve core 202. When the pressure relief valve core 202 moves in the first direction, the blocking member 402 can block the switch limiting member 401. The switch limiting member 401 prevents the switch door 300 from rotating and opening by limiting the rotating switch follower 301.

[0044] When the air pressure inside the reactor 100 increases, the pressure relief valve core 202 can be pushed to move in the first direction, thereby driving the blocking member 402 to move in the first direction. When the air pressure inside the reactor 100 is too high, the distance that the blocking member 402 moves in the first direction increases, and the blocking member 402 can block the movement of the switch limiting member 401, thereby limiting the rotating switch follower 301, so that the switch door 300 cannot be expanded, and liquid ammonia and liquid water cannot enter the inside of the reactor 100. As the gas is discharged from the exhaust channel 201, the air pressure inside the reactor 100 will decrease, and the pressure relief valve core 202 will fall back under the action of gravity. The blocking member 402 moves in the second direction, releasing the limit on the switch limiting member 401, thereby releasing the limit on the rotating switch follower 301, so that the switch door 300 can be opened, and liquid ammonia and liquid water can enter the inside of the reactor 100 again.

[0045] 6 , the raw material inlet 101 includes a liquid ammonia inlet 101 a and a water inlet 101 b . Liquid ammonia can enter the inside of the reactor 100 through the liquid ammonia inlet 101 a , and liquid water can enter the inside of the reactor 100 through the water inlet 101 b . Both the liquid ammonia inlet 101 a and the water inlet 101 b are provided with a pressure relief mechanism 200 , a switch door 300 , and an inlet self-locking mechanism 400 .

[0046] Operation process: Liquid water and liquid ammonia are added to the inner side of the reactor 100 through the raw material inlet 101. The liquid water and liquid ammonia are mixed in the reactor 100 to produce ammonia water, which can be discharged to the outside of the reactor 100 through the ammonia water outlet 102.

[0047] As the reaction proceeds, the temperature inside the reactor 100 will become higher and higher. The production of ammonia and the increase in temperature will cause the gas pressure inside the reactor 100 to become higher and higher. At this time, the gas inside the reactor 100 can push the pressure relief valve core 202 to move in the first direction, so that the pressure relief valve core 202 opens the exhaust channel 201, so that the gas can be discharged through the exhaust channel 201, reducing the gas pressure inside the reactor 100 and avoiding safety hazards caused by excessive gas pressure inside the reactor 100.

[0048] When the air pressure inside the reactor 100 increases, the pressure relief valve core 202 can be pushed to move in the first direction, thereby driving the blocking member 402 to move in the first direction. When the air pressure inside the reactor 100 is too high, the distance moved in the first direction by the blocking member 402 increases, and the blocking member 402 can block the movement of the switch limiting member 401, thereby limiting the rotation of the switch follower 301. At this time, the rotation of the switch follower 301 is limited, so that the switch door 300 cannot be expanded, and liquid ammonia and liquid water cannot enter the inside of the reactor 100. As the gas is discharged from the exhaust channel 201, the air pressure inside the reactor 100 will decrease, and the pressure relief valve core 202 will fall back under the action of gravity. The blocking member 402 moves in the second direction, releasing the limit on the switch limiting member 401, thereby releasing the limit on the rotation of the switch follower 301, so that the switch door 300 can be opened, and liquid ammonia and liquid water can enter the inside of the reactor 100 again.

[0049] Example 2

[0050] 1 to 5 , this embodiment differs from the first embodiment in that: the exhaust channel 201 includes a gas exhaust port 201a provided on the side wall of the raw material inlet 101, a pressure balance chamber 201b opened on the inner side of the raw material inlet 101, and an air inlet pipe 201c fixed on the raw material inlet 101, the gas exhaust port 201a is communicated with the pressure balance chamber 201b, the pressure balance chamber 201b is communicated with the air inlet pipe 201c, and a plurality of air inlet grooves are opened on the side wall of the air inlet pipe 201c. The gas inside the reactor 100 can enter the inner side of the air inlet pipe 201c, and then enter the inner side of the pressure balance chamber 201b, and finally can be discharged from the gas exhaust port 201a, wherein the gas exhaust port 201a can be connected to an external air pipe so that the discharged ammonia gas can be collected together.

[0051] The pressure relief valve core 202 includes a valve frame 202a fixed to the inner side of the pressure balance chamber 201b, a sliding column 202b slidingly arranged on the valve frame 202a, and a blocking block 202c arranged at the end of the sliding column 202b; when the blocking block 202c is not subject to force, it can close the connection between the pressure balance chamber 201b and the intake pipe 201c.

[0052] Among them, the block 202c is similar to an inverted frustum, the top diameter of the block 202c is larger than the bottom diameter of the block 202c, the inner diameter of the connecting point between the pressure balance chamber 201b and the intake pipe 201c gradually decreases, and the inner diameter of other positions of the pressure balance chamber 201b is larger than the top diameter of the block 202c.

[0053] When the air pressure inside the reactor 100 is normal, the gas inside the air inlet pipe 201c cannot push the block 202c at this time. When the air pressure inside the reactor 100 increases, the air pressure inside the air inlet pipe 201c also increases. At this time, the air pressure inside the gas outlet 201a and the pressure balance chamber 201b is less than the air pressure inside the air inlet pipe 201c. Under the action of the air pressure, the block 202c moves in the first direction, thereby causing the block 202c to separate from the connection between the pressure balance chamber 201b and the air inlet pipe 201c. At this time, the gas inside the reactor 100 can reach the inside of the pressure balance chamber 201b through the air inlet pipe 201c, and finally be discharged through the gas outlet 201a, so that when the pressure inside the reactor 100 increases, the gas inside the reactor 100 can be discharged through the exhaust channel 201.

[0054] The movement in the first direction is moving toward the gas outlet 201 a , and the movement in the second direction is moving away from the gas outlet 201 a .

[0055] Furthermore, a side chamber 103 is provided on the outside of the raw material inlet 101, and the blocking member 402 includes an extension column 402a fixed on the block 202c, a resistance member 402b provided at the end of the extension column 402a, and an alignment groove 402c opened on the resistance member 402b. When the block 202c moves in the first direction, it can drive the extension column 402a and the resistance member 402b to move in the first direction.

[0056] The switch limiting member 401 includes a vertical buckle 401a slidably arranged inside the side chamber 103, an elastic member 401b connected to the vertical buckle 401a, and a force bar 401c fixed to the vertical buckle 401a. The force bar 401c is inclined to the extension direction of the vertical buckle 401a. When the interference member 402b is not under force, the position of the vertical buckle 401a corresponds to the top position of the alignment groove 402c. When the extension column 402a and the interference member 402b are in contact, the vertical buckle 401a is in contact with the top of the alignment groove 402c. When the moving distance in the first direction is small, the position of the vertical buckle 401a can still correspond to the position of the alignment groove 402c. The rotating switch follower 301 and the force bar 401c conflict with each other. When the switch door 300 is unfolded, the rotating switch follower 301 can push the force bar 401c, and the force bar 401c can push the vertical buckle 401a to pass through the alignment groove 402c. Therefore, when the air pressure inside the reactor 100 is not too high, the switch door 300 can still be opened smoothly.

[0057] If the gas pressure inside the reactor 100 is higher, the gas will flow faster in the process of escaping from the reactor 100, and the force exerted on the block 202c will be greater, and the distance the block 202c will be displaced in the first direction will be greater. During this process, the block 202c drives the extension column 402a and the resistance member 402b to move a larger distance in the first direction, so that the alignment groove 402c and the vertical buckle 401a are misaligned. When the vertical buckle 401a is subjected to force, it can only resist the resistance member 402b and cannot move. Therefore, the force bar 401c cannot move after being subjected to the pressure of the rotating switch follower 301, and the rotating switch follower 301 is limited, so that the switch door 300 cannot be rotated open when it is impacted by liquid ammonia or liquid water, thereby preventing the liquid ammonia or liquid water from continuing to enter the inside of the reactor 100 to react and causing the gas pressure inside the reactor 100 to continue to rise.

[0058] The rest of the structure is the same as that of Example 1.

[0059] Example 3

[0060] 1 to 6 , this embodiment differs from the above embodiments in that the switch door 300 includes a door body 302 , a connecting end 303 provided on the door body 302 , and an automatic rebound hinge 304 rotatably connecting the connecting end 303 and the raw material inlet 101 , and the rotating switch follower 301 is fixed on the connecting end 303 .

[0061] In this embodiment, there are two switch doors 300, and the two switch doors 300 can be rotated and expanded so that the raw materials inside the raw material inlet 101 can enter the inner side of the reactor 100. When the switch door 300 is no longer pressed, the automatic rebound hinge 304 can push the two switch doors 300 to rotate and close. The automatic rebound hinge 304 is a spring hinge. Therefore, in the process of adding liquid ammonia and liquid water to the inside of the reactor 100, because they are added in batches multiple times, after each addition is completed, the automatic rebound hinge 304 will drive the switch door 300 to close.

[0062] Among them, the rotary switch follower 301 is fixed on the connecting end 303. When the connecting end 303 rotates, it can drive the rotary switch follower 301 to swing. When the switch door 300 is opened, the connecting end 303 can drive the rotary switch follower 301 to swing upward. During the upward swinging of the rotary switch follower 301, it can push the force bar 401c. The force bar 401c pushes the vertical buckle 401a to move toward the resistance component 402b. In the process of moving toward the resistance component 402b, the vertical buckle 401a can stretch the elastic component 401b. When the automatic rebound hinge 304 drives the switch door 300 to rotate and close, the pressure of the rotary switch follower 301 on the force bar 401c disappears. Under the action of the elastic force of the elastic component 401b, the vertical buckle 401a can be pulled to move away from the resistance component 402b and reset.

[0063] The switch limiter 401 also includes a connecting frame 401d fixed in the side chamber 103; the vertical buckle 401a is slidably connected to the connecting frame 401d, a sliding groove is provided on the connecting frame 401d, and a slider is provided on the vertical buckle 401a. The vertical buckle 401a is slidably installed on the connecting frame 401d through the slider, and the connecting frame 401d limits the moving direction of the vertical buckle 401a through the sliding groove.

[0064] The vertical buckle 401a has an inclined surface 401a-1, which is inclined to the extension direction of the interference member 402b. The setting of the inclined surface 401a-1 can make the vertical buckle 401a triangular. The width of the end of the vertical buckle 401a close to the interference member 402b is smaller and can pass through the alignment groove 402c smoothly. The width of the end of the vertical buckle 401a where the slider is installed is larger, thereby improving the strength of the vertical buckle 401a.

[0065] The rest of the structure is the same as that of Example 2.

[0066] Operation process: When the vertical buckle 401a moves toward the resistance member 402b, if the block 202c does not move, the position of the vertical buckle 401a corresponds to the position of the alignment groove 402c, the vertical buckle 401a can pass through the alignment groove 402c, and the resistance member 402b will not interfere with the vertical buckle 401a. At this time, the switch door 300 can be opened smoothly. However, if the block 202c moves too far, the vertical buckle 401a and the alignment groove 402c are misaligned. At this time, the vertical buckle 401a will interfere with the resistance member 402b, and the vertical buckle 401a cannot move, so the force bar 401c cannot move, and the rotating switch follower 301 cannot rotate. Therefore, the switch door 300 cannot be rotated open, so that liquid water or liquid ammonia raw materials cannot enter the inside of the reactor 100, thereby avoiding the safety hazard caused by the continuous increase in air pressure inside the reactor 100.

[0067] Example 4

[0068] 3 to 9 , this embodiment is different from the above embodiments in that, in order to reduce the temperature inside the reactor 100, the liquid ammonia to ammonia water device further includes a heat exchange mechanism 500; the heat exchange mechanism includes a heat exchange tube group 501, which is fixed to the inside of the reactor 100; a water inlet end 502, located at one end of the heat exchange tube group 501, which is connected to the water inlet 101b; a water discharge end 503, located at the other end of the heat exchange tube group 501, which is connected to the external space of the reactor 100; a side discharge assembly 101c is provided on the side wall of the water inlet 101b, and the water inlet end 502 is connected to the side discharge assembly 101c.

[0069] Under normal working conditions, the added liquid water can smoothly push open the switch door 300 and enter the inside of the reactor 100. Only a portion of the water will enter the water inlet end 502 through the side discharge component 101c. However, when the air pressure inside the reactor 100 is too high and the switch door 300 cannot be opened, the added water is accumulated on the inside of the water inlet 101b. Eventually, a large amount of water can reach the water inlet end 502 through the side discharge component 101c, thereby accelerating the water circulation speed inside the heat exchange tube group 501 and increasing the speed of cooling the internal temperature of the reactor 100.

[0070] The side discharge assembly 101c includes a side discharge port 101c-1 provided on the side wall of the water inlet 101b, a self-falling door 101c-2 provided on the inner side of the side discharge port 101c-1, and a side discharge pipe 101c-3 connecting the side discharge port 101c-1 and the water inlet end 502. The side discharge port 101c-1 is positioned higher than the switch door 300, and the self-falling door 101c-2 is rotatably installed on the inner side of the side discharge port 101c-1 through a rotating shaft structure.

[0071] In this embodiment, a side discharge assembly 101c may also be provided on the side wall of the liquid ammonia inlet 101a. The side discharge pipe 101c-3 in the side discharge assembly 101c on the liquid ammonia inlet 101a extends to the outside of the reactor 100. When excessive liquid ammonia accumulates inside the liquid ammonia inlet 101a, the liquid ammonia can be discharged to the outside of the reactor 100 through the side discharge pipe 101c-3 for recovery.

[0072] Furthermore, the reactor 100 is provided with a hot water outlet 104 , and the drainage end 503 is connected to the hot water outlet 104 . The water inside the heat exchange tube group 501 can be discharged to the outside of the reactor 100 through the hot water outlet 104 .

[0073] The rest of the structure is the same as that of Example 3.

[0074] Operation process: Under normal working conditions, the added liquid water can smoothly push open the switch door 300 and enter the inner side of the reactor 100, and only a part of the water will enter the water inlet end 502 through the side discharge component 101c.

[0075] Under normal working conditions, the self-falling door 101c-2 falls vertically downward under the action of gravity, sealing the side outlet 101c-1. The water directly hits the switch door 300 under the action of gravity, and the switch door 300 unfolds. However, when the switch door 300 cannot be opened, the water inside the water inlet 101b accumulates more and more. The pressure of the water can push open the self-falling door 101c-2, enter the side outlet pipe 101c-3, and finally enter the inside of the heat exchange tube group 501, increasing the flow rate of the water inside the heat exchange tube group 501, thereby increasing the speed of cooling the inside of the reactor 100.

[0076] It is important to note that the construction and arrangement of the present application shown in a number of different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, it should be readily understood by those who refer to this disclosure that many modifications are possible (e.g., the size, scale, structure, shape, and proportion of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, changes in orientation, etc.) without departing substantially from the novel teachings and advantages of the subject matter described in this application. For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of the element may be inverted or otherwise changed, and the nature, number, or position of the discrete elements may be altered or changed. Therefore, all such modifications are intended to be included within the scope of the present invention. The order or sequence of any process or method steps may be changed or reordered according to alternative embodiments. In the claims, any "means plus function" clause is intended to cover the structure described herein that performs the function, and is not only structurally equivalent but also equivalent structures. Other replacements, modifications, changes, and omissions may be made in the design, operating conditions, and arrangement of the exemplary embodiments without departing from the scope of the present invention. Therefore, the invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0077] Additionally, in order to provide a concise description of exemplary embodiments, all features of an actual embodiment (i.e., those features that are not relevant to the best mode presently contemplated for carrying out the invention or those that are not relevant to implementing the invention) may not be described.

[0078] It will be appreciated that in the development of any actual embodiment, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort may be complex and time-consuming, but will, for those of ordinary skill having the benefit of this disclosure, be a routine undertaking of design, fabrication, and production without undue experimentation.

[0079] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A device for preparing ammonia water from liquid ammonia, characterized in that: include, A reactor (100) having a raw material inlet (101) and an ammonia aqueous solution outlet (102) capable of discharging ammonia aqueous solution; A pressure relief mechanism (200), comprising an exhaust passage (201) provided on the raw material inlet (101), and a pressure relief valve core (202) provided in the exhaust passage (201); A switch door (300) is provided on the raw material inlet (101), and a switch follower (301) is provided on the switch door (300); and, An inlet self-locking mechanism (400) comprises a switch limiting member (401) provided on the raw material inlet (101), and a blocking member (402) connected to the pressure relief valve core (202); When the pressure relief valve core (202) moves in the first direction, the blocking member (402) can block the switch limiting member (401), and the switch limiting member (401) prevents the switch door (300) from rotating and opening through the limit switch follower (301).

2. The liquid ammonia to ammonia water device according to claim 1, characterized in that: The exhaust passage (201) comprises a gas exhaust port (201a) provided on the side wall of the raw material inlet (101), a pressure balance chamber (201b) opened inside the raw material inlet (101), and an air intake pipe (201c) fixed on the raw material inlet (101); The gas discharge port (201a) is in communication with the pressure balance chamber (201b), and the pressure balance chamber (201b) is in communication with the air inlet pipe (201c); The pressure relief valve core (202) comprises a valve frame (202a) fixed to the inner side of the pressure balance chamber (201b), a sliding column (202b) slidably arranged on the valve frame (202a), and a blocking block (202c) arranged at the end of the sliding column (202b); When the blocking block (202c) is not subjected to force, it can seal the connection between the pressure balance chamber (201b) and the air intake pipe (201c).

3. The liquid ammonia to ammonia water device according to claim 2, characterized in that: A side chamber (103) is arranged outside the raw material inlet (101); The blocking member (402) comprises an extension column (402a) fixed on the blocking block (202c), a resisting member (402b) disposed at the end of the extension column (402a), and an alignment groove (402c) provided on the resisting member (402b); The switch limiting member (401) comprises a vertical buckle (401a) slidably arranged inside the side chamber (103), an elastic member (401b) connected to the vertical buckle (401a), and a stress bar (401c) fixed on the vertical buckle (401a); The switch follower (301) and the stress bar (401c) are in conflict with each other, and when the switch door (300) is unfolded, the switch follower (301) can push the stress bar (401c), and the stress bar (401c) can push the vertical buckle (401a) to penetrate the alignment groove (402c).

4. The liquid ammonia to ammonia water device according to claim 3, characterized in that: The switch door (300) comprises a door body (302), a connection end (303) provided on the door body (302), and an automatic rebound hinge (304) rotatably connecting the connection end (303) and the raw material inlet (101); The switch follower (301) is fixed on the connection end (303).

5. The liquid ammonia to ammonia water device according to claim 3 or 4, characterized in that: The switch limiting member (401) further comprises a connecting frame (401d) fixed in the side chamber (103); The vertical buckle (401a) is slidably connected to the connecting frame (401d).

6. The liquid ammonia to ammonia water device according to claim 5, characterized in that: The vertical buckle (401a) has an inclined surface (401a-1), and the inclined surface (401a-1) is inclined to the extension direction of the abutting member (402b).

7. The liquid ammonia to ammonia water device according to claim 3, 4 or 6, characterized in that: The raw material inlet (101) includes a liquid ammonia inlet (101a) and a water inlet (101b).

8. The liquid ammonia to ammonia water device according to claim 7, characterized in that: Also included is a heat exchange mechanism (500); which includes, A heat exchange tube group (501) fixed to the inner side of the reactor (100); A water inlet end (502), located at one end of the heat exchange tube group (501), connected to the water inlet (101b); A drainage end (503), located at the other end of the heat exchange tube group (501), which is connected to the external space of the reactor (100); The side wall of the water inlet (101b) is provided with a side discharge component (101c), and the water inlet end (502) is connected to the side discharge component (101c).

9. The liquid ammonia to ammonia water device according to claim 8, characterized in that: The side discharge assembly (101c) comprises a side discharge port (101c-1) arranged on the side wall of the water inlet (101b), a self-dropping door (101c-2) arranged inside the side discharge port (101c-1), and a side discharge pipe (101c-3) connecting the side discharge port (101c-1) and the water inlet end (502).

10. The liquid ammonia to ammonia water device according to claim 9, characterized in that: The reactor (100) is also provided with a hot water outlet (104), and the drainage end (503) is connected to the hot water outlet (104).

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