Liquid ammonia gasification device

Abstract

The utility model provides a liquid ammonia gasification device which comprises a tank body and a liquid storage tank used for storing liquid ammonia, an exhaust pipe is arranged at the top of the tank body, a vertically-distributed first heating cavity is formed in the tank body, the first heating cavity is connected with a circulating water heating device, and the circulating water heating device and the first heating cavity form a circulating water path. And the outer wall of the first heating cavity is sleeved with a first spiral groove communicating with the interior of the tank body, the liquid storage tank is connected with a liquid pumping structure, and the liquid pumping structure extends to the inner top of the first spiral groove. According to the liquid ammonia gasification device, liquid ammonia can be gasified while the liquid ammonia flows along the first spiral groove, the gasification efficiency of the liquid ammonia can be improved, and the liquid ammonia can be continuously gasified.

Description

Technical Field

[0001] The present application relates to liquid ammonia gasification technology, and in particular to a liquid ammonia gasification device. Background Art

[0002] In chemical production, a common method for producing ammonia gas is to use a gasification device to heat and vaporize liquid ammonia into ammonia gas. Currently, an existing liquid ammonia gasification device consists of a tank and a water tank. A coil is installed inside the tank. The water inlet of the coil is connected to the water outlet of the water tank via a water pump, and the water outlet of the coil is connected to the water inlet of the water tank. A constant temperature heating device is installed inside the water tank. During operation, a certain amount of liquid ammonia is added to the tank. The constant temperature heating device heats the circulating water in the water tank to form hot water. The water pump then delivers the hot water to the coil. The hot water flows along the coil, heating the liquid ammonia in the tank, vaporizing it to form ammonia gas.

[0003] However, when liquid ammonia is vaporized, it is stationary in the tank, so a long heating time is required to vaporize all the liquid ammonia in the tank, which leads to slow vaporization speed and low efficiency of liquid ammonia. Utility Model Content

[0004] The present application provides a liquid ammonia gasification device to solve the problems of slow gasification speed and low efficiency when gasifying liquid ammonia in existing liquid ammonia gasification devices.

[0005] The present application provides a liquid ammonia gasification device, comprising a tank body and a liquid storage tank for storing liquid ammonia, wherein an exhaust pipe is provided on the top of the tank body;

[0006] A vertically distributed first heating chamber is provided inside the tank body, and the first heating chamber is connected to a circulating water heating device forming a circulating water circuit therewith;

[0007] The outer wall of the first heating chamber is provided with a first spiral groove communicating with the interior of the tank body;

[0008] The liquid storage tank is connected to a liquid pumping structure, and the liquid pumping structure extends to the inner top of the first spiral groove.

[0009] Optionally, the first heating chamber is an annular structure, the inner wall of the first heating chamber is provided with a second spiral groove, and the liquid pumping structure extends to the inner top of the second spiral groove.

[0010] Optionally, a second heating chamber is provided at the bottom of the tank body, and the second heating chamber is communicated with the lower end of the first heating chamber;

[0011] The second heating chamber is connected to the water outlet end of the circulating water heating device, and the first heating chamber is connected to the water inlet end of the circulating water heating device.

[0012] Optionally, the liquid extraction structure includes a liquid guide tube connected to the liquid storage tank, a liquid extraction pump is installed on the liquid guide tube, and the liquid guide tube is connected to a first liquid inlet tube and a second liquid inlet tube;

[0013] Wherein, the first liquid inlet pipe extends to the inner top of the first spiral groove, and the second liquid inlet pipe extends to the inner top of the second spiral groove.

[0014] Optionally, both the first liquid inlet pipe and the second liquid inlet pipe are equipped with valves.

[0015] Optionally, the circulating water heating device includes a water tank, a constant temperature heating device is provided inside the water tank, the water outlet end of the water tank is connected to the second heating chamber through a water pump, and the water inlet end of the water tank is connected to the upper part of the first heating chamber through a connecting pipe.

[0016] Optionally, a heat-insulating layer is provided on the outer wall of the tank body.

[0017] Compared with the prior art, the present invention has the following advantages:

[0018] The liquid ammonia gasification device provided in the present application is provided with a vertically distributed first heating chamber inside the tank body, the first heating chamber is connected to a circulating water heating device which forms a circulating water circuit with the first heating chamber, the outer wall of the first heating chamber is provided with a first spiral groove which is connected to the interior of the tank body, and the liquid storage tank for storing liquid ammonia is connected to a liquid pumping structure which extends to the top of the first spiral groove, so that when the liquid ammonia is gasified, the circulating water heating device provides hot water to the first heating chamber, and the hot water heats the first heating chamber, the first spiral groove and the interior of the tank body in the first heating chamber, and then the liquid pumping structure pumps the liquid ammonia in the liquid storage tank to the top of the first spiral groove, and the liquid ammonia flows downward along the first spiral groove. While flowing along the first spiral groove, the liquid ammonia is heated and gasified to form gaseous ammonia. Compared with the existing gasification method of liquid ammonia being left to stand, the liquid ammonia is gasified while flowing along the first spiral groove, which not only improves the gasification efficiency of the liquid ammonia, but also enables continuous gasification of the liquid ammonia. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0020] Figure 1 This is a schematic diagram of the main structure of the liquid ammonia gasification device provided in an embodiment of the present application;

[0021] Figure 2A schematic diagram of a partial front cross-sectional structure of a liquid ammonia gasification device provided in an embodiment of the present application;

[0022] Figure 3 This is a schematic diagram of a partial top-view cross-sectional structure of a liquid ammonia gasification device provided in an embodiment of the present application.

[0023] Description of reference numerals: tank body 1, liquid storage tank 2, exhaust pipe 3, first heating chamber 4, first spiral groove 5, second spiral groove 6, second heating chamber 7;

[0024] Circulating water heating device 8, water tank 81, water pump 82, connecting pipe 83;

[0025] Liquid pumping structure 9, liquid guiding tube 91, liquid pump 92, first liquid inlet tube 93, second liquid inlet tube 94. DETAILED DESCRIPTION

[0026] To make the purpose, technical solutions, and advantages of the embodiments of this application more clear, the technical solutions in the embodiments of this application are clearly and completely described below. Obviously, the described embodiments are part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts also fall within the scope of protection of this application.

[0027] like Figure 1-Figure 3 As shown:

[0028] A liquid ammonia gasification device provided in one embodiment of the present application includes a tank body 1 and a liquid storage tank 2 for storing liquid ammonia. An exhaust pipe 3 is provided on the top of the tank body 1 for discharging gaseous ammonia.

[0029] A vertically distributed first heating chamber 4 is fixed inside the tank body 1. The first heating chamber 4 is connected to a circulating water heating device 8 that forms a circulating water circuit with it. The circulating water heating device 8 transports hot water into the first chamber, and the first heating chamber 4 is filled with hot water.

[0030] The outer wall of the first heating chamber 4 is provided with a first spiral groove 5 communicating with the interior of the tank body 1. Specifically, the first spiral groove 5 is a hollow structure with both the upper spiral end and the inner spiral end being open, and the inner spiral end of the first spiral groove 5 is sealed and welded to the outer wall of the first heating chamber 4.

[0031] The liquid storage tank 2 is connected to a liquid pumping structure 9 , and the liquid pumping structure 9 extends to the inner top of the first spiral groove 5 to transport liquid ammonia to the first spiral groove 5 .

[0032] During use, the circulating water heating device 8 provides hot water to the first heating chamber 4 and fills the first heating chamber 4 with hot water. The hot water in the second heating chamber 7 heats the cavity wall of the first heating chamber 4, the first spiral groove 5 and the inside of the tank body 1. Then, the liquid ammonia in the liquid storage tank 2 is transported to the top of the first spiral groove 5 through the liquid pumping device. The liquid ammonia flows downward along the first spiral groove 5. When the liquid ammonia flows along the first spiral groove 5, the liquid ammonia forms a liquid ammonia flow layer in the first spiral groove 5. The outer walls of the first spiral groove 5 and the first heating chamber 4 simultaneously heat the liquid ammonia flow layer, quickly vaporizing the liquid ammonia into gaseous ammonia, and finally the gaseous ammonia is discharged from the tank body 1 through the exhaust pipe 3.

[0033] The liquid ammonia gasification device provided in this embodiment is provided with a vertically distributed first heating chamber 4 inside the tank body 1, the first heating chamber 4 is connected to a circulating water heating device 8 that forms a circulating water circuit with it, the outer wall of the first heating chamber 4 is provided with a first spiral groove 5 that is connected to the interior of the tank body 1, and the liquid storage tank 2 for storing liquid ammonia is connected to a liquid extraction structure 9 that extends to the top of the first spiral groove 5, so that when in use, the liquid ammonia can be quickly gasified while flowing along the first spiral groove 5, which not only improves the gasification efficiency of the liquid ammonia but also enables continuous gasification of the liquid ammonia.

[0034] In some embodiments of the present application, the first heating chamber 4 is an annular structure, the inner wall of the first heating chamber 4 is provided with a second spiral groove 6 , and the liquid pumping structure 9 extends to the inner top of the second spiral groove 6 .

[0035] Furthermore, the second spiral groove 6 is a hollow structure with both the upper spiral end and the outer spiral end being open, and the outer spiral end of the second spiral groove 6 is sealed and welded to the interior of the first heating chamber 4 .

[0036] In this embodiment, by configuring the first cavity as an annular structure and providing a second spiral groove 6 on the inner wall of the first cavity, the first and second spiral grooves 5 and 6 can simultaneously vaporize liquid ammonia, thereby increasing the amount of liquid ammonia vaporized per unit time. Furthermore, the hot water within the first cavity simultaneously heats the first and second spiral grooves 5 and 6, thereby improving the utilization rate of thermal energy.

[0037] In some embodiments of the present application, a second heating chamber 7 is provided at the bottom of the tank body 1 , and the second heating chamber 7 is communicated with the lower end of the first heating chamber 4 .

[0038] The second heating chamber 7 is connected to the water outlet of the circulating water heating device 8 , and the first heating chamber 4 is connected to the water inlet of the circulating water heating device 8 .

[0039] In this embodiment, the second heating chamber 7 is filled with hot water.

[0040] During use, the liquid inlet amount of the first spiral groove 5 and the second spiral groove 6 can be increased, and most of the liquid ammonia is vaporized when flowing along the first spiral groove 5 and the second spiral groove 6. The remaining small amount of liquid ammonia finally falls to the upper end of the second heating chamber 7 and is heated and vaporized by the second heating chamber 7, thereby further improving the vaporization efficiency of the liquid ammonia.

[0041] In some embodiments of the present application, the liquid extraction structure 9 includes a liquid guide tube 91 connected to the liquid storage tank 2, a liquid extraction pump 92 is installed on the liquid guide tube 91, and the liquid guide tube 91 is connected to a first liquid inlet tube 93 and a second liquid inlet tube 94;

[0042] The first liquid inlet pipe 93 extends to the inner top of the first spiral groove 5 , and the second liquid inlet pipe 94 extends to the inner top of the second spiral groove 6 .

[0043] During use, the liquid pump 92 is started to suck the liquid ammonia in the liquid storage tank 2. The liquid ammonia enters the first liquid inlet pipe 93 and the second liquid inlet pipe 94 from the liquid guide pipe 91 at the same time. The first liquid inlet pipe 93 transports liquid ammonia to the top of the first spiral groove 5, and the second liquid inlet pipe 94 transports liquid ammonia to the top of the second spiral groove 6.

[0044] In some embodiments of the present application, both the first liquid inlet pipe 93 and the second liquid inlet pipe 94 are equipped with valves for controlling the amount of liquid inlet.

[0045] In some embodiments of the present application, the circulating water heating device 8 includes a water tank 81, a constant temperature heating device is provided inside the water tank 81, the water outlet end of the water tank 81 is connected to the second heating chamber 7 through a water pump 82, and the water inlet end of the water tank 81 is connected to the upper part of the first heating chamber 4 through a connecting pipe 83.

[0046] Furthermore, a valve is provided on the connecting pipe 83 for controlling the flow rate of the circulating water, and when the valve is closed, the first heating chamber 4 and the second heating chamber 7 are easily filled with hot water.

[0047] In this embodiment, the constant temperature heating device is a prior art and will not be described in detail.

[0048] In some embodiments of the present application, a thermal insulation layer is provided on the outer wall of the tank body 1 to reduce heat loss in the tank body 1 .

[0049] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or make equivalent replacements for some or all of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A liquid ammonia gasification device, comprising a tank body (1), a liquid storage tank (2) for storing liquid ammonia, wherein an exhaust pipe (3) is provided on the top of the tank body (1), characterized in that ； A vertically distributed first heating chamber (4) is provided inside the tank body (1), and the first heating chamber (4) is connected to a circulating water heating device (8) forming a circulating water circuit therewith; The outer wall of the first heating chamber (4) is provided with a first spiral groove (5) communicating with the interior of the tank body (1); the liquid storage tank (2) is connected to a liquid pumping structure (9), and the liquid pumping structure (9) extends to the inner top of the first spiral groove (5).

2. The liquid ammonia gasification device according to claim 1, characterized in that: The first heating chamber (4) is an annular structure, the inner wall of the first heating chamber (4) is provided with a second spiral groove (6), and the liquid extraction structure (9) extends to the inner top of the second spiral groove (6).

3. The liquid ammonia gasification device according to claim 2, characterized in that: A second heating chamber (7) is provided at the bottom of the tank body (1), and the second heating chamber (7) is communicated with the lower end of the first heating chamber (4); The second heating chamber (7) is connected to the water outlet of the circulating water heating device (8), and the first heating chamber (4) is connected to the water inlet of the circulating water heating device (8).

4. The liquid ammonia gasification device according to claim 3, characterized in that: The liquid extraction structure (9) comprises a liquid guide tube (91) connected to the liquid storage tank (2), a liquid extraction pump (92) being installed on the liquid guide tube (91), and a first liquid inlet tube (93) and a second liquid inlet tube (94) being connected to the liquid guide tube (91), wherein the first liquid inlet tube (93) extends to the inner top of the first spiral groove (5), and the second liquid inlet tube (94) extends to the inner top of the second spiral groove (6).

5. The liquid ammonia gasification device according to claim 4, characterized in that: The first liquid inlet pipe (93) and the second liquid inlet pipe (94) are both equipped with valves.

6. The liquid ammonia gasification device according to claim 3, characterized in that: The circulating water heating device (8) comprises a water tank (81), a constant temperature heating device is provided inside the water tank (81), the water outlet of the water tank (81) is connected to the second heating chamber (7) via a water pump (82), and the water inlet of the water tank (81) is connected to the upper part of the first heating chamber (4) via a connecting pipe (83).

7. The liquid ammonia gasification device according to claim 1, characterized in that: A heat-insulating layer is provided on the outer wall of the tank body (1).

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