Ammonia separation device for liquid ammonia production

Abstract

The utility model relates to the technical field of gas-liquid separation, in particular to an ammonia separation device for liquid ammonia production, which comprises a liquid storage tank, an ammonia gas outlet and a separation mechanism, and the ammonia gas outlet is communicated with the liquid storage tank and positioned on the outer surface wall of the liquid storage tank; the separation mechanism comprises a guide pipe, a condensation pipe, a condensation bin, a circulation module, a liquid ammonia inlet and a sealing plate, the liquid ammonia inlet is communicated with the liquid storage tank and located on the outer surface wall of the liquid storage tank, the sealing plate is detachably connected with the liquid ammonia inlet through a bolt, the guide pipe is communicated with the ammonia outlet and located at one end of the ammonia outlet, and the condensation pipe is communicated with the guide pipe and located at one end of the guide pipe. The condensation bin is fixedly connected with the condensation pipe and arranged on the outer surface wall of the condensation pipe in a sleeving mode, and the input end and the output end of the circulation module are communicated with the condensation bin and located on the outer surface wall of the condensation bin. Water vapor in ammonia gas can be quickly and effectively filtered out, so that the purity of the ammonia gas is improved, the structure is simple, and the operation is convenient.

Description

Technical Field

[0001] This utility model relates to the field of gas-liquid separation technology, and in particular to an ammonia separation device for liquid ammonia production. Background Technology

[0002] Currently, ammonia separators separate the ammonia liquid contained in the vapor evaporated by the evaporator before it is drawn into the compressor, preventing the ammonia liquid from entering the compressor and causing wet stroke and liquid slugging, thus improving the compressor efficiency. However, the ammonia separators configured in small ammonia compression systems have a small volume, resulting in poor ammonia gas-liquid separation and frequent liquid ammonia entering the compressor, causing the system to be unstable.

[0003] The prior art CN203478758U provides an ammonia separator, which includes a storage tank, a vapor-liquid mixture inlet, an ammonia outlet, and a drain pipe. The outer wall of the storage tank is provided with a steam coil, through which steam is introduced. Valves are provided at both ends of the steam coil, and the outer wall of the storage tank is also provided with a heat insulation layer.

[0004] However, in existing technologies, ammonia gas will contain some water vapor after separation, resulting in insufficient purity of ammonia gas. Utility Model Content

[0005] The purpose of this invention is to provide an ammonia separation device for liquid ammonia production, which aims to solve the technical problem that some water vapor will be mixed in after ammonia separation, resulting in insufficient purity of ammonia.

[0006] To achieve the above objectives, this utility model provides an ammonia separation device for liquid ammonia production, including a storage tank and an ammonia outlet. The ammonia outlet is connected to the storage tank and located on the outer wall of the storage tank. It also includes a separation mechanism. The separation mechanism includes a conduit, a condenser pipe, a condensation chamber, a circulation module, a liquid ammonia inlet, and a sealing plate. The liquid ammonia inlet is connected to the storage tank and located on the outer wall of the storage tank. The sealing plate is detachably connected to the liquid ammonia inlet by bolts. The conduit is connected to the ammonia outlet and located at one end of the ammonia outlet. The condenser pipe is connected to the conduit and located at one end of the conduit. The condensation chamber is fixedly connected to the condenser pipe and sleeved on the outer wall of the condenser pipe. The input and output ends of the circulation module are respectively connected to the condensation chamber and located on the outer wall of the condensation chamber.

[0007] The condenser tube includes a tube body, external heat exchange fins, and internal heat exchange fins. There are multiple sets of external heat exchange fins, each set of which is fixedly connected to the tube body and is fitted onto the outer wall of the tube body. There are multiple sets of internal heat exchange fins, each set of which is fixedly connected to the tube body and is located inside the tube body.

[0008] Each set of internal heat exchange fins has a frustum-shaped cylindrical structure, and semi-circular openings are evenly distributed at the edge of each set of internal heat exchange fins.

[0009] The condensation chamber includes a chamber body, an inlet pipe, and an outlet pipe. The chamber body is fixedly connected to the condensation pipe and is sleeved on the outer wall of the condensation pipe. The inlet pipe is connected to the chamber body and is located on the outer wall of the chamber body. The outlet pipe is connected to the chamber body and is located on the outer wall of the chamber body.

[0010] The circulation module includes an inlet hose, an outlet hose, a circulation pump, a coolant tank, and TEC cooling chips. The two ends of the inlet hose are connected to the condenser and the coolant tank, respectively. The circulation pump is connected to the coolant tank and is located on one side of the coolant tank. The two ends of the outlet hose are connected to the condenser and the circulation pump, respectively. There are multiple sets of TEC cooling chips, and each set of TEC cooling chips is fixedly connected to the coolant tank and located on one side of the coolant tank.

[0011] This utility model discloses an ammonia separation device for liquid ammonia production. Liquid ammonia is added to a storage tank through a liquid ammonia inlet. The inlet is then sealed with a sealing plate and bolts. The storage tank is then heated, causing the liquid ammonia to evaporate. The resulting vapor enters a conduit through the ammonia outlet. Under the guidance of the conduit, the vapor enters a condenser for condensation. Ammonia and water vapor enter the condenser together. The condensation temperature of ammonia is -33℃, while that of water vapor is 100℃. Therefore, the water vapor in the condenser rapidly condenses into liquid water due to the temperature difference, while the ammonia remains gaseous. This cooling and condensation process removes water vapor from the vapor, improving the purity of the ammonia. Coolant is added to the condensation chamber and the circulation module to circulate the condenser, continuously condensing the water vapor. This structure allows for rapid and effective filtration of water vapor from ammonia, thereby improving its purity. The device is simple in structure and easy to operate. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0013] Figure 1 This is a schematic diagram of the structure of an ammonia separation device for liquid ammonia production according to this utility model.

[0014] Figure 2 This is a top view of the condenser tube of this utility model.

[0015] Figure 3This is a cross-sectional view of the internal structure of the condenser tube of this utility model.

[0016] In the diagram: 101-Storage tank, 102-Ammonia outlet, 103-Conduit, 104-Liquid ammonia inlet, 105-Sealing plate, 106-Pipe body, 107-External heat exchange fin, 108-Internal heat exchange fin, 109-Semi-circular opening, 110-Seal body, 111-Inlet pipe, 112-Outlet pipe, 113-Inlet hose, 114-Outlet hose, 115-Circulation pump, 116-Coolant reservoir, 117-TEC cooling element. Detailed Implementation

[0017] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, but should not be construed as limiting the present invention.

[0018] Please see Figures 1 to 3 This utility model provides an ammonia separation device for liquid ammonia production, including a storage tank 101 and an ammonia outlet 102. The ammonia outlet 102 is connected to the storage tank 101 and located on the outer wall of the storage tank 101. It also includes a separation mechanism. The separation mechanism includes a conduit 103, a condenser pipe, a condensation chamber, a circulation module, a liquid ammonia inlet 104, and a sealing plate 105. The liquid ammonia inlet 104 is connected to the storage tank 101 and located on the outer wall of the storage tank 101. The sealing plate 105 is detachably connected to the liquid ammonia inlet 104 by bolts. The conduit 103 is connected to the ammonia outlet 102 and located at one end of the ammonia outlet 102. The condenser pipe is connected to the conduit 103 and located at one end of the conduit 103. The condensation chamber is fixedly connected to the condenser pipe and sleeved on the outer wall of the condenser pipe. The input and output ends of the circulation module are respectively connected to the condensation chamber and located on the outer wall of the condensation chamber.

[0019] In this embodiment, liquid ammonia is added to the storage tank 101 through the liquid ammonia inlet 104. The liquid ammonia inlet 104 is then sealed using the sealing plate 105 and bolts. The storage tank 101 is then heated, causing the liquid ammonia to evaporate. The resulting vapor enters the conduit 103 through the ammonia outlet 102. Under the guidance of the conduit 103, the vapor enters the condenser tube for condensation. Ammonia and water vapor enter the condenser tube together. The condensation temperature of ammonia is -33°C, and the condensation temperature of water vapor is 100°C. Therefore, the water vapor in the condenser tube will rapidly condense into liquid water due to the temperature difference, while the ammonia remains unaffected and in a gaseous state. Water vapor in the vapor is filtered out by cooling and condensation, improving the purity of the ammonia. Coolant is added to the condensation chamber and the circulation module to circulate the condenser tube, achieving continuous condensation of water vapor.

[0020] Furthermore, the condenser tube includes a tube body 106, external heat exchange fins 107, and internal heat exchange fins 108. There are multiple sets of external heat exchange fins 107, each set of which is fixedly connected to the tube body 106 and is respectively sleeved on the outer wall of the tube body 106. There are multiple sets of internal heat exchange fins 108, each set of which is fixedly connected to the tube body 106 and is respectively located inside the tube body 106.

[0021] In this embodiment, the steam is guided by the tube body 106, and the steam is conducted from top to bottom, contacting each set of inner heat exchange fins 108. Multiple sets of inner heat exchange fins 108 absorb the heat of the water vapor and transfer it to the tube body 106 and the outer heat exchange fins 107. The outer heat exchange fins 107 are cooled by the coolant in the condensation chamber. The multiple sets of outer heat exchange fins 107 and multiple sets of inner heat exchange fins 108 can respectively increase the contact area, increase the contact area between the outer heat exchange fins 107 and the coolant, and increase the contact area between the inner heat exchange fins 108 and the steam, thereby effectively improving the heat exchange efficiency.

[0022] Furthermore, each set of internal heat exchange plates 108 has a frustum-shaped cylindrical structure, and semi-circular openings 109 are evenly distributed at the edge of each set of internal heat exchange plates 108.

[0023] In this embodiment, each set of internal heat exchange plates 108 has a frustum-shaped cylindrical structure, which allows steam to fully contact each set of internal heat exchange plates 108 when it is introduced from top to bottom, thereby improving heat exchange efficiency. Furthermore, the liquid water generated by the cooling effect of the internal heat exchange plates 108 can be guided to the end of the condenser tube through the semi-circular opening 109, which can effectively prevent water accumulation.

[0024] Furthermore, the condensation chamber includes a chamber body 110, an inlet pipe 111, and an outlet pipe 112. The chamber body 110 is fixedly connected to the condenser pipe and is sleeved on the outer wall of the condenser pipe. The inlet pipe 111 is connected to the chamber body 110 and is located on the outer wall of the chamber body 110. The outlet pipe 112 is connected to the chamber body 110 and is located on the outer wall of the chamber body 110.

[0025] In this embodiment, coolant is introduced into the chamber 110 through the inlet pipe 111, and the coolant is used to conduct contact heat exchange on multiple sets of external heat exchange fins 107, and finally discharged through the outlet pipe 112, thereby forming a cooling cycle and improving heat exchange efficiency.

[0026] Furthermore, the circulation module includes an inlet hose 113, an outlet hose 114, a circulation pump 115, a coolant tank 116, and TEC cooling chips 117. The two ends of the inlet hose 113 are respectively connected to the condenser and the coolant tank 116. The circulation pump 115 is connected to the coolant tank 116 and is located on one side of the coolant tank 116. The two ends of the outlet hose 114 are respectively connected to the condenser and the circulation pump 115. The number of TEC cooling chips 117 is multiple sets. Each set of TEC cooling chips 117 is fixedly connected to the coolant tank 116 and is located on one side of the coolant tank 116.

[0027] In this embodiment, the coolant tank 116 is used to store coolant, and multiple sets of TEC cooling chips 117 cool the coolant in the coolant tank 116. The circulation pump 115 pumps the coolant out of the coolant tank 116. The outlet hose 114 connects the circulation pump 115 and the inlet pipe 111, and the inlet hose 113 connects the outlet pipe 112 and the coolant tank 116. The circulation pump 115 is started to circulate the coolant.

[0028] The above-disclosed embodiments are merely one or more preferred embodiments of this application and should not be construed as limiting the scope of this application. Those skilled in the art can understand that all or part of the processes for implementing the above embodiments and equivalent changes made in accordance with the claims of this application still fall within the scope of this application.

Claims

1. An ammonia separation device for liquid ammonia production, comprising a storage tank and an ammonia outlet, wherein the ammonia outlet is connected to the storage tank and located on the outer wall of the storage tank, characterized in that, It also includes a separation mechanism; The separation mechanism includes a conduit, a condenser, a condensation chamber, a circulation module, a liquid ammonia inlet, and a sealing plate. The liquid ammonia inlet is connected to the storage tank and located on the outer wall of the storage tank. The sealing plate is detachably connected to the liquid ammonia inlet by bolts. The conduit is connected to the ammonia outlet and located at one end of the ammonia outlet. The condenser is connected to the conduit and located at one end of the conduit. The condensation chamber is fixedly connected to the condenser and is sleeved on the outer wall of the condenser. The input and output ends of the circulation module are respectively connected to the condensation chamber and located on the outer wall of the condensation chamber.

2. The ammonia separation device for liquid ammonia production as described in claim 1, characterized in that, The condenser tube includes a tube body, external heat exchange fins, and internal heat exchange fins. There are multiple sets of external heat exchange fins, each set of which is fixedly connected to the tube body and is sleeved on the outer wall of the tube body. There are multiple sets of internal heat exchange fins, each set of which is fixedly connected to the tube body and is located inside the tube body.

3. The ammonia separation device for liquid ammonia production as described in claim 2, characterized in that, Each set of internal heat exchange fins has a frustum-shaped cylindrical structure, and semi-circular openings are evenly distributed at the edge of each set of internal heat exchange fins.

4. The ammonia separation device for liquid ammonia production as described in claim 1, characterized in that, The condensation chamber includes a chamber body, an inlet pipe, and an outlet pipe. The chamber body is fixedly connected to the condensation pipe and is sleeved on the outer wall of the condensation pipe. The inlet pipe is connected to the chamber body and is located on the outer wall of the chamber body. The outlet pipe is connected to the chamber body and is located on the outer wall of the chamber body.

5. The ammonia separation device for liquid ammonia production as described in claim 1, characterized in that, The circulation module includes an inlet hose, an outlet hose, a circulation pump, a coolant tank, and TEC cooling chips. The two ends of the inlet hose are connected to the condenser and the coolant tank, respectively. The circulation pump is connected to the coolant tank and is located on one side of the coolant tank. The two ends of the outlet hose are connected to the condenser and the circulation pump, respectively. There are multiple sets of TEC cooling chips. Each set of TEC cooling chips is fixedly connected to the coolant tank and is located on one side of the coolant tank.

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