Anti-crystallization ammonia gas conveying pipeline

Abstract

The utility model discloses an anti-crystallization ammonia gas conveying pipeline which comprises an ammonia gas conveying pipe, and a heating assembly is arranged on the outer wall of the ammonia gas conveying pipe. The heating assembly comprises a first heat preservation assembly and a second heat preservation assembly which are the same in structure. The first heat preservation assembly comprises a heat preservation cover attached to the outer wall of the ammonia gas conveying pipe, the interior of the heat preservation cover is of a hollow structure, one side of the heat preservation cover is connected with a steam input pipe, a second electromagnetic valve is arranged on the steam input pipe, a groove is formed in the inner wall of the heat preservation cover, and an electric heating pipe is installed in the groove and arranged on the outer wall of the ammonia gas conveying pipe in a sleeving mode. One side of the ammonia delivery pipe is connected with an ammonia input pipe, the ammonia input pipe is connected with an exhaust hood, and the bottom of the exhaust hood is connected with a water tank. According to the device, the temperature in the ammonia gas conveying pipe can be guaranteed, meanwhile, ammonia gas residues in the ammonia gas conveying pipe are reduced, and therefore the phenomenon of crystallization in the ammonia gas conveying pipe is well avoided.

Description

Technical Field

[0001] This utility model relates to the field of ammonia gas transmission pipeline technology, specifically to an ammonia gas transmission pipeline that prevents crystallization. Background Technology

[0002] Ammonia gas pipelines are systems used to transfer ammonia gas between or within industrial facilities. Ammonia is an important chemical raw material, widely used in the manufacture of fertilizers, refrigerants, cleaning agents, plastics, and explosives. Because ammonia is toxic and has an irritating odor, special attention must be paid to safety and sealing when designing and operating ammonia gas pipelines.

[0003] Ammonia needs to be kept at a certain temperature during transportation. The existing ammonia transportation pipe has two thin tubes used to transport steam to heat the ammonia. During normal operation of the system, the ammonia temperature is high and crystallization will not occur inside the pipe. When the system is shut down, ammonia remains inside the pipe. The steam in the thin tubes alone cannot maintain the temperature of the ammonia, which will cause the ammonia temperature to drop and crystallization to occur. Utility Model Content

[0004] The purpose of this invention is to provide an anti-crystallization ammonia gas delivery pipeline to solve the problem of easy crystallization inside the ammonia gas delivery pipeline when the system is shut down, as mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an anti-crystallization ammonia gas conveying pipeline, comprising an ammonia gas conveying pipe, wherein a heating component is provided on the outer wall of the ammonia gas conveying pipe;

[0006] The heating component includes a first insulation component and a second insulation component, the second insulation component having the same structure as the first insulation component;

[0007] The first insulation component includes an insulation cover attached to the outer wall of the ammonia delivery pipe. The insulation cover has a hollow interior. A steam input pipe is connected to one side of the insulation cover. A second solenoid valve is installed on the steam input pipe. A groove is formed on the inner wall of the insulation cover. An electric heating tube is installed inside the groove. The electric heating tube is sleeved on the outer wall of the ammonia delivery pipe. An ammonia input pipe is connected to one side of the ammonia delivery pipe. An exhaust hood is connected to the ammonia input pipe. A water tank is connected to the bottom of the exhaust hood.

[0008] Preferably, the heat insulation cover has a fan-shaped structure when viewed from the side, and the outer walls of the heat insulation cover of the first heat insulation component and the second heat insulation component are fixedly connected by bolts.

[0009] Preferably, the ammonia input pipe is equipped with an inlet valve and a temperature sensor, with the temperature sensor located on one side of the inlet valve.

[0010] Preferably, a first solenoid valve is provided on the pipe of the exhaust hood, and an exhaust fan is installed inside the exhaust hood.

[0011] Preferably, a water inlet pipe is connected to one side of the water tank, and a water inlet valve is installed on the water inlet pipe.

[0012] Preferably, a drain pipe is connected to the other side of the water tank, and a drain valve is installed on the drain pipe.

[0013] Preferably, the heating tubes are distributed in multiple horizontally at equal intervals with respect to the grooves on the inner wall of the heat preservation cover, and the heating tubes have a ring structure.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] (1) This device can ensure the temperature inside the ammonia delivery pipe and reduce the ammonia residue inside the ammonia delivery pipe, thereby better avoiding the phenomenon of crystallization inside the ammonia delivery pipe.

[0016] (2) This device sets a first heat preservation component and a second heat preservation component on the outer wall of the ammonia gas conveying pipe. The heat preservation cover of the first heat preservation component and the second heat preservation component are attached to the outer wall of the ammonia gas conveying pipe to wrap the ammonia gas conveying pipe. Through the electric heating tube set inside the heat preservation cover and the steam input pipe connected to one side of the heat preservation cover, the internal temperature of the ammonia gas conveying pipe can be ensured to meet the required temperature by combining steam heating and electric heating, thereby avoiding crystallization inside the ammonia gas conveying pipe.

[0017] (3) This device connects an exhaust hood to the ammonia input pipe on one side of the ammonia delivery pipe, and one end of the exhaust hood is connected to a water tank. The exhaust hood can promptly discharge the residual ammonia inside the ammonia delivery pipe into the water tank, reducing the residual ammonia inside the ammonia delivery pipe and reducing the occurrence of crystallization inside the ammonia delivery pipe. At the same time, the ammonia water formed inside the water tank can be recycled and reused, achieving the purpose of energy saving. Attached Figure Description

[0018] Fig. 1 This is a schematic diagram of an anti-crystallization ammonia gas conveying pipeline according to the present invention;

[0019] Fig. 2 This is a cross-sectional view of an anti-crystallization ammonia gas conveying pipeline according to the present invention;

[0020] Fig. 3 This is a side view showing the connection between the first and second insulation components of an anti-crystallization ammonia gas conveying pipeline according to this utility model.

[0021] In the diagram: 1. Inlet valve; 2. Ammonia input pipe; 3. First solenoid valve; 4. Heating assembly; 41. First insulation assembly; 411. Insulation cover; 412. Steam input pipe; 413. Second solenoid valve; 42. Electric heating element; 43. Second insulation assembly; 5. Exhaust hood; 6. Water inlet valve; 7. Water inlet pipe; 8. Water tank; 9. Drain valve; 10. Drain pipe; 11. Temperature sensor; 12. Exhaust fan; 13. Ammonia delivery pipe. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figs. 1-3This utility model provides a technical solution: an anti-crystallization ammonia gas conveying pipeline, including an ammonia gas conveying pipe 13. A heating assembly 4 is provided on the outer wall of the ammonia gas conveying pipe 13. The heating assembly 4 includes a first insulation assembly 41 and a second insulation assembly 43. The second insulation assembly 43 has the same structure as the first insulation assembly 41. The first insulation assembly 41 includes an insulation cover 411 attached to the outer wall of the ammonia gas conveying pipe 13. The insulation cover 411 has a fan-shaped structure when viewed from the side. The outer walls of the insulation cover 411 of the first and second insulation assemblies 41 and 43 are fixedly connected by bolts. This structure can wrap the ammonia gas conveying pipe 13 with the insulation cover 411, thereby ensuring uniform heating. The interior of the insulation cover 411 is hollow. The structure is used for inputting steam for heating. A steam input pipe 412 is connected to one side of the insulation cover 411, and another side of the steam input pipe 412 is connected to a steam generator. A second solenoid valve 413 is installed on the steam input pipe 412. A groove is formed on the inner wall of the insulation cover 411, and an electric heating element 42 is installed inside the groove. Multiple electric heating elements 42 are distributed horizontally at equal intervals around the groove on the inner wall of the insulation cover 411, forming a ring structure. The electric heating elements 42 are fixed to the inner wall of the insulation cover 411 by bolts. This structure ensures uniform heating of the ammonia delivery pipe 13 by the electric heating elements 42. The electric heating elements 42 are sleeved on the outer wall of the ammonia delivery pipe 13. An ammonia input pipe 2 is connected to one side of the ammonia delivery pipe 13. An inlet valve 1 and a temperature sensor 11 are installed on the inlet pipe 2. The temperature sensor 11 is located on one side of the inlet valve 1. This structure allows the temperature sensor 11 to detect the temperature of the gas inside the ammonia delivery pipe 13 in a timely manner, thus opening the inlet valve 1 and the temperature sensor 11 when the temperature of the gas inside the ammonia delivery pipe 13 is insufficient. The temperature sensor 11 is electrically connected to the inlet valve 1 and the inlet valve 1. An exhaust hood 5 is connected to the ammonia inlet pipe 2. The ammonia inlet pipe 2 can be equipped with a pressure gauge to ensure stable ammonia delivery. A first solenoid valve 3 is installed on the pipe of the exhaust hood 5, and an exhaust fan 12 is installed inside the exhaust hood 5. This structure allows the exhaust fan 12 to draw air from the ammonia delivery pipe. The ammonia gas inside the ammonia delivery pipe 13 is quickly guided to the end of the water tank 8, thereby reducing the residual ammonia gas inside the ammonia delivery pipe 13. The bottom of the exhaust hood 5 is connected to the water tank 8, and one side of the water tank 8 is connected to the water inlet pipe 7. The water inlet pipe 7 is equipped with a water inlet valve 6. This structure is used to add water for mixing through the water inlet pipe 7 and the water inlet valve 6. The other side of the water tank 8 is connected to the drain pipe 10, and the drain pipe 10 is equipped with a drain valve 9. This structure can discharge the ammonia water through the drain valve 9 and the drain pipe 10. The recovered ammonia water can be sold or used in the laboratory. The concentration of ammonia water inside the water tank 8 can be automatically detected by installing a detector. The specific settings of the detector can be installed according to the actual use.

[0024] Working principle: When using this anti-crystallization ammonia gas delivery pipeline, during system operation, ammonia gas first enters the ammonia gas delivery pipeline 13 from the ammonia gas input pipe 2 and is input to the designated process. When the system stops, the second solenoid valve 413 opens, and steam enters the insulation cover 411 of the first insulation component 41 and the second insulation component 43 from the steam input pipe 412. When the steam enters the insulation cover 411, it heats and insulates the ammonia gas remaining inside the ammonia gas delivery pipeline 13. If the temperature sensor 11 detects that the temperature inside the ammonia gas delivery pipeline 13 is insufficient, the electric heating tube 42 is turned on to heat the gas inside the ammonia gas delivery pipeline 13, so that the gas temperature inside the ammonia gas delivery pipeline 13 reaches the preset temperature. If it is necessary to discharge the ammonia gas inside the ammonia gas delivery pipeline 13, the first solenoid valve 3 is opened. At this time, the ammonia gas inside the ammonia gas delivery pipeline 13 enters the water tank 8 and mixes with the water in the water tank 8 to form ammonia water. If it is necessary to discharge the ammonia water, the drain valve 9 is opened to discharge the ammonia water.

[0025] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An anti-crystallization ammonia gas conveying pipeline, comprising an ammonia gas conveying pipe (13), characterized in that: The outer wall of the ammonia delivery pipe (13) is provided with a heating component (4); The heating component (4) includes a first heat preservation component (41) and a second heat preservation component (43), the second heat preservation component (43) having the same structure as the first heat preservation component (41); The first insulation component (41) includes an insulation cover (411) attached to the outer wall of the ammonia delivery pipe (13). The insulation cover (411) has a hollow structure inside. A steam input pipe (412) is connected to one side of the insulation cover (411). A second solenoid valve (413) is installed on the steam input pipe (412). A groove is opened on the inner wall of the insulation cover (411). An electric heating tube (42) is installed inside the groove. The electric heating tube (42) is sleeved on the outer wall of the ammonia delivery pipe (13). An ammonia input pipe (2) is connected to one side of the ammonia delivery pipe (13). An exhaust hood (5) is connected to the ammonia input pipe (2). A water tank (8) is connected to the bottom of the exhaust hood (5).

2. The ammonia gas conveying pipeline against crystallization according to claim 1, characterized in that: The heat insulation cover (411) has a fan-shaped structure when viewed from the side, and the outer walls of the heat insulation cover (411) of the first heat insulation component (41) and the second heat insulation component (43) are fixedly connected by bolts.

3. The ammonia gas conveying pipeline against crystallization according to claim 1, characterized in that: The ammonia input pipe (2) is equipped with an intake valve (1) and a temperature sensor (11), with the temperature sensor (11) located on one side of the intake valve (1).

4. The ammonia gas conveying pipeline against crystallization according to claim 1, characterized in that: The exhaust hood (5) is equipped with a first solenoid valve (3) on its pipe, and an exhaust fan (12) is installed inside the exhaust hood (5).

5. The ammonia gas conveying pipeline against crystallization according to claim 1, characterized in that: The water tank (8) is connected to a water inlet pipe (7) on one side, and a water inlet valve (6) is installed on the water inlet pipe (7).

6. The ammonia gas conveying pipeline for preventing crystallization according to claim 1, characterized in that: The other side of the water tank (8) is connected to a drain pipe (10), and a drain valve (9) is installed on the drain pipe (10).

7. The ammonia gas conveying pipeline against crystallization according to claim 1, characterized in that: The electric heating tube (42) has multiple grooves on the inner wall of the heat insulation cover (411) that are distributed horizontally at equal intervals, and the electric heating tube (42) has a ring structure.

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