Gas-water separation device for ammonia synthesis

Abstract

The utility model discloses a gas-water separation device for ammonia synthesis, and belongs to the technical field of ammonia synthesis. Comprising a separation box, an air inlet pipe, an air outlet pipe, a plurality of hollow cooling plates, a first hard water pipe, a connecting rod and a second hard water pipe, wherein the air inlet pipe and the air outlet pipe are arranged on the separation box; the hollow cooling plates are uniformly distributed in the separation box up and down; the first hard water pipe is arranged at the top end of the uppermost cooling plate; the third hard water pipe is arranged between the adjacent cooling plates, the cooling liquid conveying assembly is installed between the first hard water pipe and the second hard water pipe, and the driving assembly drives the first hard water pipe to rotate. The first hard water pipe, the connecting rod and the second hard water pipe are coaxial, and the first hard water pipe and the second hard water pipe are rotationally connected with the top wall and the bottom wall of the separation box respectively; the first hard water pipe, the second hard water pipe, the third hard water pipe and the cooling plates communicate with one another. According to the utility model, the cooling liquid in the cooling plate can be replaced and circulated so as to effectively liquefy water vapor for a long time.

Description

TECHNICAL FIELD

[0001] The utility model relates to synthetic ammonia technical field especially relates to a gas water separation device for synthetic ammonia. BACKGROUND

[0002] In the process of synthetic ammonia from natural gas, hydrogen is mainly prepared from natural gas, naphtha, heavy oil, coal, coke, coke oven gas and other raw materials, and in industry, these raw materials are first reacted with water vapor at high temperature to produce synthesis gas containing hydrogen, carbon monoxide and other components. The carbon monoxide in the synthesis gas can react with water vapor to produce hydrogen and carbon dioxide, so the synthesis gas contains carbon monoxide, carbon dioxide and a small amount of water vapor in addition to hydrogen. The presence of water vapor will affect the subsequent reactions, such as the activity and life of the catalyst, so it is necessary to remove the water vapor through a gas-water separation device.

[0003] In the patent with application number CN202220303142.5, a gas-water separation device for separating synthetic ammonia raw gas from water is disclosed, which includes a separation tank. A central shaft is coaxially arranged inside the separation tank. The top end of the central shaft penetrates the top of the separation tank and is fixedly connected to the output end of a motor arranged at the top of the separation tank. Three funnels are sequentially arranged on the outside of the central shaft from top to bottom. The edges of the three funnels are arranged with gaps relative to the inner wall of the separation tank. A plurality of holes are vertically arranged at the center of the middle funnel. A first gas outlet pipe is connected to the top of the separation tank and communicates with a drying tank arranged at the top of the separation tank. An annular baffle ring is horizontally arranged inside the separation tank. The outer wall of the annular baffle ring abuts against the inner wall of the separation tank. The annular baffle ring is arranged between the middle funnel and the uppermost funnel, and abuts against the middle funnel. This device can ensure sufficient separation of synthetic ammonia raw gas from water vapor.

[0004] In actual implementation, the above-mentioned three funnels need to be filled with cooling liquid to achieve the purpose of cooling and liquefying water vapor. In order to ensure the cooling effect, the cooling liquid inside needs to be circulated. However, the above-mentioned device does not have a related cooling liquid circulation component. When the temperature of the cooling liquid increases after heat exchange, it is difficult to conveniently replace or circulate the cooling liquid inside the funnel, thereby ensuring the cooling effect for a long time. UTILITY MODEL CONTENTS

[0005] The utility model aims to provide a gas water separation device for synthetic ammonia, which at least achieves the purpose of circulating and replacing the cooling liquid, thereby ensuring the cooling effect.

[0006] The utility model aims to achieve the following technical solutions:

[0007] The utility model provides a kind of gas-water separation device for synthetic ammonia, including separation tank, gas inlet pipe and gas outlet pipe being arranged on the separation tank, multiple hollow cooling plates being uniformly distributed in the separation tank, first hard water pipe being arranged at the top end of the uppermost cooling plate, connecting rod being arranged between the center of adjacent cooling plates, second hard water pipe being arranged at the bottom end of the lowermost cooling plate, multiple third hard water pipes being arranged between adjacent cooling plates, cooling liquid delivery assembly being rotatably installed between the first hard water pipe and the second hard water pipe, and drive assembly for driving the first hard water pipe to rotate;The first hard water pipe, connecting rod and second hard water pipe are coaxial, and the first hard water pipe and the second hard water pipe are rotatably connected with the top wall and the bottom wall of the separation tank respectively.

[0008] The first hard water pipe, the second hard water pipe and the third hard water pipe are in communication with the multiple cooling plates.

[0009] Preferably, the cooling plate is provided with three, the inside of the separation tank is slidably provided with an annular baffle capable of contacting the middle cooling plate, the top end of the annular baffle is fixedly connected with a hydraulic rod arranged at the top end of the separation tank, the middle part of the middle cooling plate is provided with multiple holes, and the edges of the remaining cooling plates are gap-provided between the inner walls of the separation tank.

[0010] Preferably, the center of the cooling plate is higher than the edge, and the inner wall of the annular baffle is lower than the outer wall.

[0011] Preferably, the drive assembly includes a driven wheel sleeved on the outside of the first hard water pipe, a driving wheel engaged with the driven wheel, and a motor arranged above the separation tank and having an output end fixedly connected with the driving wheel.

[0012] Preferably, the top end of the separation tank is provided with a support frame, and the motor is arranged on the support frame.

[0013] Preferably, the cooling liquid circulating assembly includes a first water pipe rotatably connected with the first hard water pipe, a cooler connected with the water inlet end of the first water pipe, a liquid storage tank connected with the water inlet end of the cooler, and a second water pipe rotatably installed at the bottom end of the second hard water pipe and having a water outlet end connected with the liquid storage tank, a water pump is arranged on the first water pipe or the second water pipe, and a valve is arranged on the first water pipe and the second water pipe.

[0014] Preferably, the top end of the separation tank is provided with a first fixing rod, and the first fixing rod is fixedly connected with the first water pipe.

[0015] Preferably, the bottom end of the separation tank is provided with a second fixing rod, and the second fixing rod is fixedly connected with the second water pipe.

[0016] Compared with the prior art, the utility model has the advantages of the following:

[0017] Through setting the cooling plate as the hollow structure, setting the first hard water pipe at the top end of the uppermost cooling plate, setting the second hard water pipe at the bottom end of the lowermost cooling plate, setting the third hard water pipe between the adjacent cooling plates, and rotatingly installing the cooling liquid conveying assembly between the first hard water pipe and the second hard water pipe, the cooling liquid can be conveyed to the first hard water pipe through the cooling liquid conveying assembly in the process of liquefying water vapor, then is conveyed to the uppermost cooling plate along the first hard water pipe, then is conveyed to other cooling plates along the third hard water pipe, and finally is discharged into the cooling liquid conveying assembly through the second hard water pipe, so that the purpose of replacing and circulating the cooling liquid in the cooling plate is realized, and the purpose of effectively liquefying water vapor for a long time is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is the cross section structure schematic diagram of the front direction of example 1;

[0019] Figure 2 It is the cross section structure schematic diagram of the front direction of example 1; Figure 1 It is the cross section structure schematic diagram of the front direction of example 1;

[0020] Figure 3 It is the cross section structure schematic diagram of the front direction of example 1; Figure 1 It is the cross section structure schematic diagram of the front direction of example 1;

[0021] In the drawing: 1-separation tank, 2-inlet pipe, 3-outlet pipe, 4-cooling plate, 5-first hard water pipe, 6-connecting rod, 7-second hard water pipe, 8-third hard water pipe, 9-ring baffle, 14-hydraulic rod, 10-hole, 11-driven wheel, 12-driving wheel, 13-motor, 15-support frame, 16-first water pipe, 17-cooler, 18-liquid storage tank, 19-first fixed rod, 20-second fixed rod. DETAILED DESCRIPTION

[0022] Example 1

[0023] A gas-water separation device for synthesizing ammonia, such as Figure 1As shown, it comprises a separation tank 1, an air inlet pipe 2 and an air outlet pipe 3 arranged on the separation tank 1, a plurality of hollow cooling plates 4 arranged in the separation tank 1 in an up-down manner, a first hard water pipe 5 arranged at the top end of the uppermost cooling plate 4, a connecting rod 6 arranged between the centers of adjacent cooling plates 4, a second hard water pipe 7 arranged at the bottom end of the lowermost cooling plate 4, a plurality of third hard water pipes 8 arranged between adjacent cooling plates 4, a cooling liquid conveying assembly rotatably arranged between the first hard water pipe 5 and the second hard water pipe 7, and a driving assembly for driving the first hard water pipe 5 to rotate; the first hard water pipe 5, the connecting rod 6 and the second hard water pipe 7 are coaxial, and the first hard water pipe 5 and the second hard water pipe 7 are rotatably connected to the top wall and the bottom wall of the separation tank 1, respectively. Figure 1 As shown, the first hard water pipe 5, the second hard water pipe 7 and the third hard water pipe 8 and the plurality of cooling plates 4 are in communication with each other. The bottom end of the separation tank 1 is provided with support legs (prior art, not shown in the figure). In addition, a liquid discharge pipe (prior art, not shown in the figure) is arranged at the bottom end of the separation tank 1 to facilitate the collection of water after the water vapor is liquefied.

[0024] Further, as shown in Figure 1 The driving assembly comprises a driven wheel 11 arranged outside the first hard water pipe 5, a driving wheel 12 engaged with the driven wheel 11, and a motor 13 arranged above the separation tank 1 and having an output end fixedly connected to the driving wheel 12. Further, as shown in Figure 1 The top end of the separation tank 1 is provided with a support frame 15, and the motor 13 is arranged on the support frame 15. Further, as shown in Figure 1 The cooling liquid circulating assembly comprises a first water pipe 16 (hard water pipe) rotatably connected to the first hard water pipe 5, a cooler 17 (prior art) connected to the water inlet end of the first water pipe 16, a liquid storage tank 18 connected to the water inlet end of the cooler 17, and a second water pipe (hard water pipe) rotatably arranged at the bottom end of the second hard water pipe 7 and having a water outlet end connected to the liquid storage tank 18. A water pump (prior art, not shown in the figure) is arranged on the first water pipe 16 or the second water pipe, and a valve (prior art, not shown in the figure) is arranged on the first water pipe 16 and the second water pipe.

[0025] Further, as shown in Figure 1 The top end of the separation tank 1 is provided with a first fixing rod 19, and the first fixing rod 19 is fixedly connected to the first water pipe 16. Further, the bottom end of the separation tank 1 is provided with a second fixing rod 20, and the second fixing rod 20 is fixedly connected to the second water pipe.

[0026] Working principle: When the water pump is turned on, the synthesis gas is introduced into the separator 1 through the air inlet pipe 2. The coolant in the storage tank 18 is sequentially transported through the cooler 17 and the first water pipe 16 to the first hard water pipe 5, and then along the first hard water pipe 5 to the uppermost cooling plate 4. It is then transported along multiple third hard water pipes 8 to other cooling plates 4, and finally discharged into the storage tank 18 through the second hard water pipe 7. This achieves the purpose of replacing and circulating the coolant in the cooling plates 4, thereby ensuring the effective liquefaction of water vapor for a long time.

[0027] After water vapor liquefies, it forms water droplets on the surface of the cooling plate 4. In order to make these water droplets fall quickly for collection, the motor 13 is started. Under the action of the motor 13, the driving wheel 12 drives the driven wheel 11 to rotate, which in turn drives the first rigid water pipe 5 to rotate. This causes the connecting rod 6, multiple cooling plates 4, second rigid water pipe 7 and other components to rotate synchronously with the first rigid water pipe 5. As a result, the water on the surface of the multiple cooling plates 4 falls quickly under the action of centrifugal force, thus collecting the water.

[0028] It is worth noting that bearings (existing technology, not shown in the figure) are provided at the rotating contact points of the first hard water pipe 5, the second hard water pipe 7, and the separation box 1.

[0029] Example 2

[0030] Based on Example 1, such as Figures 1-3 As shown, three cooling plates 4 are provided. An annular blocking plate 9, capable of contacting the middle cooling plate 4, is slidably disposed inside the separation box 1. The top end of the annular blocking plate 9 is fixedly connected to a hydraulic rod 14 located at the top of the separation box 1. Multiple holes 10 are provided in the center of the middle cooling plate 4. The edges of the remaining cooling plates 4 are spaced apart from the inner wall of the separation box 1. Further, as... Figure 2 As shown, the center of the cooling plate 4 is higher than the edge, and it can be set in the shape of a bowl or a cone, which can increase the spontaneous downward flow velocity and centrifugal downward flow velocity of water droplets; the inner wall of the annular block plate 9 is lower than the outer wall to reduce the accumulation of water on the surface of the annular block plate 9.

[0031] In practice, the syngas is first cooled by the lowest cooling plate 4, then expands upwards along the edge of the lowest cooling plate 4, diffuses upwards through the hole 10 in the middle of the second cooling plate 4, and then expands upwards along the edge of the highest cooling plate 4. This increases the diffusion time of the syngas among the three cooling plates 4, thereby improving the cooling effect. During this process, the forming plate comes into contact with the middle cooling plate 4.

[0032] When the cooling plate 4 is rotated, the hydraulic rod 14 needs to be retracted to move the annular blocking plate 9 upward, ensuring that the water droplets can flow smoothly down the edge of the cooling plate 4.

Claims

1. A gas-water separation device for synthetic ammonia, characterized by comprising: The utility model provides a cooling device, including separation tank (1), the air inlet pipe (2) and air outlet pipe (3) of setting on separation tank (1), the hollow cooling plate (4) of being uniformly distributed in separation tank (1) up and down, the first hard water pipe (5) of setting in the top end of the uppermost cooling plate (4), the connecting rod (6) of setting between the center of adjacent cooling plate (4), the second hard water pipe (7) of setting in the bottom end of the lowermost cooling plate (4), the third hard water pipe (8) of setting between adjacent cooling plate (4), the cooling liquid delivery assembly of rotation installation between first hard water pipe (5) and second hard water pipe (7) and the drive assembly of driving first hard water pipe (5) and rotate, first hard water pipe (5), connecting rod (6) and second hard water pipe (7) are coaxial, and first hard water pipe (5) and second hard water pipe (7) are rotationally connected with the top wall and bottom wall of separation tank (1) respectively, First hard water pipe (5), second hard water pipe (7) and third hard water pipe (8) and multiple cooling plate (4) are communicated with each other.

2. The gas-water separating device for synthetic ammonia according to claim 1, characterized by Cooling plate (4) is provided with three, the inside of separation tank (1) is slidably provided with annular baffle (9) can contact with the cooling plate (4) in the middle, the top end of annular baffle (9) is fixedly connected with hydraulic rod (14) set in the top end of separation tank (1), the middle part of cooling plate (4) in the middle is provided with multiple holes (10), and the edge of remaining cooling plate (4) is arranged with clearance between the inner wall of separation tank (1).

3. The gas-water separating device for ammonia synthesis according to claim 2, characterized in that, The center of cooling plate (4) is higher than the edge, and the inner wall of annular baffle (9) is lower than the outer wall.

4. The gas-water separating device for synthetic ammonia according to claim 1, characterized by The drive assembly includes a driven wheel (11) fitted outside the first hard water pipe (5), a driving wheel (12) engaged with the driven wheel (11), and a motor (13) disposed above the separation tank (1) and having an output end fixedly connected with the driving wheel (12).

5. The gas-water separating device for synthetic ammonia according to claim 4, characterized in that, The top end of the separation tank (1) is provided with a support frame (15), and the motor (13) is arranged on the support frame (15).

6. The gas-water separating device for synthetic ammonia according to claim 1, characterized by The cooling liquid circulating assembly includes a first water pipe (16) rotationally connected with the first hard water pipe (5), a cooler (17) connected with the water inlet end of the first water pipe (16), a liquid storage tank (18) connected with the water inlet end of the cooler (17), and a second water pipe rotationally installed at the bottom end of the second hard water pipe (7) and having a water outlet end connected with the liquid storage tank (18). A water pump is arranged on the first water pipe (16) or the second water pipe, and a valve is arranged on the first water pipe (16) and the second water pipe.

7. The gas-water separating device for synthetic ammonia according to claim 6, characterized in that The top end of the separation tank (1) is provided with a first fixing rod (19), and the first fixing rod (19) is fixedly connected with the first water pipe (16).

8. The gas-water separating device for synthetic ammonia according to claim 6, characterized by The bottom end of the separation tank (1) is provided with a second fixing rod (20), and the second fixing rod (20) is fixedly connected with the second water pipe.

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