A decarbonization flash vapor pressurization recovery device for use in ammonia synthesis production

Abstract

The application discloses a kind of decarburization flash gas pressurization recovery device for synthesis ammonia production, it is related to the technical field of flash gas recycling.The present application includes flash tank, the position of left side of flash tank is provided with separation tank, the position of front of flash tank is provided with gas storage tank, the middle position of front side wall of separation tank is fixed with the refrigerating machine that is connected with its inside, the inside of separation tank is provided with separation pipe, the position of rear side of separation tank outside is provided with rotating rod corresponding to rotating hole, the front end of rotating rod is fixed with the metal plate that is connected with the rear side wall of separation tank, the rear side wall of separation tank is fixed with the magnetic ring plate that is adsorbed with metal plate in the position of rotating hole periphery.The present application carries out temperature control to the inside of separation tank by the setting of refrigerating machine, can improve the generation ratio of flash gas, realize the control of the recovery amount of flash gas, simultaneously, the separation of metal plate and magnetic ring plate can make the inclination angle adjustment of rotating rod to separation pipe, improve the recovery efficiency of gas-liquid separation.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of flash gas recycling, and particularly relates to a decarburization flash gas pressurization recovery device used in synthetic ammonia production. BACKGROUND

[0002] Synthetic ammonia refers to ammonia directly synthesized from nitrogen and hydrogen in the presence of a catalyst at high temperature and high pressure, and is a basic inorganic chemical process. Therefore, a large amount of condensed liquid is discharged from the production equipment. After the condensed liquid is discharged from the production equipment, a large amount of flash gas is generated due to the pressure difference between the inside and outside of the equipment. The flash gas is steam formed by the re-evaporation of hot condensed water. Since the flash gas is often directly discharged into the atmosphere, this part of energy is wasted. Therefore, in order to avoid energy waste, a corresponding recovery device is needed to recycle the flash gas, which can improve the efficiency of the plant and reduce energy loss. However, the recovery device still has the following disadvantages in actual use:

[0003] When the recovery device is used to recover the flash gas, the production ratio of the flash gas cannot be controlled, so the recovery amount of the flash gas cannot be increased or reduced as needed;

[0004] When the flash gas is recovered, the inclination angle of the separation pipe cannot be quickly adjusted and changed, which affects the flow rate of the flash gas and the condensed liquid, and thus the efficiency of gas-liquid recovery cannot be adjusted.

[0005] Therefore, the existing decarburization flash gas pressurization recovery device cannot meet the needs in actual use, and there is an urgent need for improved technology on the market to solve the above problems. SUMMARY

[0006] The present application aims to provide a decarburization flash gas pressurization recovery device used in synthetic ammonia production. The inside of the separation tank is temperature-controlled by the setting of the refrigerator, so as to control the pressure difference, thereby increasing the production ratio of the flash gas, realizing the control of the recovery amount of the flash gas, and through the separation of the metal plate and the magnetic ring plate, the inclination angle of the separation pipe is adjusted by the rotating rod, thereby improving the recovery efficiency of gas-liquid separation.

[0007] To solve the above technical problems, the present application is realized by the following technical scheme:

[0008] The present application is a decarburization flash gas pressurization recovery device used in synthetic ammonia production, comprising a flash tank, a separation tank is arranged at the left position of the flash tank, a gas storage tank is arranged at the front position of the flash tank, a refrigerator is fixed to the middle position of the front side wall of the separation tank and is connected to the inside of the refrigerator, and a separation pipe is arranged in the inside of the separation tank.

[0009] The left and right ports of the separation tube are fixed with corrugated pipes one, and the middle part of the upper side wall of the separation tube is fixed with a middle pipe, and the port of the middle pipe is fixed with a corrugated pipe two;

[0010] The middle part of the rear side wall of the separation box is provided with a rotating hole, and the rear side of the separation box is provided with a rotating rod corresponding to the position of the rotating hole, and the front end of the rotating rod is fixed with a metal plate connected with the rear side wall of the separation box;

[0011] The middle part of the front side wall of the metal plate is fixed with a moving rod penetrating the internal position of the rotating hole, and the front and rear middle side walls of the peripheral side wall of the separation tube are fixed with two symmetrically arranged shaft rods, and the rear end of the shaft rod of the rear side of the separation tube is fixed with a positioning rod;

[0012] The front end of the moving rod is sleeved on the peripheral side of the positioning rod through the moving hole, and the peripheral side wall of the positioning rod is provided with four annularly arranged strip-shaped holes, and the front part of the inner side wall of the moving hole is fixed with four sliding blocks slidingly arranged in the internal position of the strip-shaped hole;

[0013] The rear side wall of the separation box is fixed with a magnetic ring plate attracted to the metal plate at the position outside the rotating hole.

[0014] Further, the left side of the gas storage tank is provided with a compressor connected with the inside thereof.

[0015] Further, the left and right side walls of the separation box are fixed with flow pipes corresponding to the port positions of the separation tube, and the flow pipes are respectively fixedly connected with the ports of the adjacent corrugated pipes one.

[0016] Further, an air extraction pump is arranged between the flash tank and the separation box, the air inlet end of the air extraction pump is connected with the adjacent flow pipe through a pipeline, and the air outlet end of the air extraction pump is connected with the air inlet end of the flash tank through a pipeline.

[0017] Further, a two-way pipe is connected between the air outlet end of the flash tank and the air inlet end of the gas storage tank, and a one-way valve is fixed at the middle position of the two-way pipe.

[0018] Further, a U-shaped frame is fixed to the inner bottom side of the separation box below the separation tube, the middle position of the separation tube is located in the internal position of the U-shaped frame, and the shaft rods on the side walls of the U-shaped frame are rotationally connected with the front and rear side walls of the separation tube.

[0019] Further, a connecting pipe is fixed to the middle position of the upper side wall of the separation box, and the upper port of the corrugated pipe two is fixedly connected with the lower port of the connecting pipe.

[0020] Further, limit rods are fixed between the front and rear side walls of the strip-shaped hole, and the middle side walls of the sliding blocks are slidably sleeved on the surface side of the limit rods through the sliding holes.

[0021] Further, the limiting rod of the rear side wall of the sliding block is sleeved with a spring, and the surface of the rotating rod is fixed with a plurality of annularly distributed handle rods.

[0022] The present application has the following advantages:

[0023] In use, the over-refrigerator controls the temperature in the separation tank, so that the change in temperature will cause the pressure in the separation tank to change when the volume of the separation tank remains unchanged. The lower the temperature in the separation tank, the higher the ratio of flash gas generated when the condensed liquid flows into the separation tank, thereby controlling the recovery amount of flash gas.

[0024] In use, the handle rod rotates the rotating rod, which drives the movement rod to rotate, thereby rotating the positioning rod through the sliding block, rotating the separation tube around the shaft rod, and pulling the corrugated tube one and the corrugated tube two through the port position of the separation tube, thereby adjusting the inclination of the separation tube, so that the gas and liquid in the separation tube can flow quickly, thereby improving the recovery efficiency of gas-liquid separation.

[0025] Of course, implementing any product of the present application does not necessarily require all the advantages described above. BRIEF DESCRIPTION OF DRAWINGS

[0026] To more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments description. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor.

[0027] Figure 1 It is a front view of the overall structure;

[0028] Figure 2 It is a rear view of the overall structure;

[0029] Figure 3 It is an internal structure diagram of the separation tank;

[0030] Figure 4 It is an assembly structure diagram of the rotating rod and the separation tube;

[0031] Figure 5 It is a structure diagram of the rotating rod;

[0032] Figure 6 It is a structure diagram of the separation tube;

[0033] Figure 7 It is an external structure diagram of the separation tank.

[0034] The components represented by the numbers in the drawings are listed as follows:

[0035] 1, flash tank; 101, two-way pipe; 2, gas storage tank; 3, compressor; 4, separation tank; 401, connecting pipe; 402, flow pipe; 403, rotating hole; 404, magnetic ring plate; 5, refrigeration device; 6, one-way valve; 7, air pump; 8, rotating rod; 801, handle; 802, metal plate; 803, moving rod; 804, moving hole; 805, sliding block; 806, sliding hole; 9, separation pipe; 901, U-shaped frame; 902, corrugated pipe one; 903, corrugated pipe two; 904, middle pipe; 905, shaft rod; 906, positioning rod; 907, strip-shaped port; 908, limiting rod; 909, spring. DETAILED DESCRIPTION

[0036] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application.

[0037] Please refer to Figures 1 to 7 As shown in the drawings, the present application is a kind of decarburization flash gas pressurization recovery device for synthesis ammonia production, which comprises a flash tank 1, a separation tank 4 is arranged at the position in front of the flash tank 1, a gas storage tank 2 is arranged at the position in front of the flash tank 1, a refrigeration device 5 is fixed to the middle position of the front side wall of the separation tank 4 and is connected to the inside of the separation tank 4, the temperature inside the separation tank 4 is controlled by the refrigeration device 5, so that the change of the temperature will cause the change of the pressure in the separation tank 4 under the condition that the volume of the separation tank 4 is unchanged, the lower the temperature in the separation tank 4, the higher the ratio of the flash gas produced by the condensate flowing into the separation pipe 9, and the separation pipe 9 is arranged at the inside of the separation tank 4; the left and right ports of the separation pipe 9 are fixed with corrugated pipe one 902, the middle pipe 904 is fixed to the middle position of the upper side wall of the separation pipe 9, the end port of the middle pipe 904 is fixed with corrugated pipe two 903, and the left position of the gas storage tank 2 is provided with a compressor 3 connected to the inside of the gas storage tank 2.

[0038] Through the use of the above structure, when it is necessary to recover the flash gas, the connecting pipe 401 on the upper side of the separation tank 4 is connected to the outlet of the external condensate discharge device, and the refrigeration device 5 is operated to refrigerate the inside of the separation tank 4, so that there is a difference between the pressure in the separation tank 4 and the pressure in the condensate discharge device, and thus the condensate will flow into the inside of the separation pipe 9 from the position of the connecting pipe 401, the condensate will flow from the high-pressure area to the low-pressure area, and the flash gas produced will be pumped into the inside of the flash tank 1 by the air pump 7, so that the gas-liquid separation is carried out, and the flash gas will flow from the position of the two-way pipe 101 to the inside of the gas storage tank 2 for storage.

[0039] The middle position of the rear side wall of the separation box 4 is provided with a rotating hole 403, and the rear side of the separation box 4 is provided with a rotating rod 8 corresponding to the position of the rotating hole 403. The front end of the rotating rod 8 is fixed with a metal plate 802 connected to the rear side wall of the separation box 4. The middle position of the front side wall of the metal plate 802 is fixed with a moving rod 803 passing through the inner position of the rotating hole 403. Two axis rods 905 are fixed on the front and rear middle side walls of the separation tube 9, and the rear end of the axis rod 905 on the rear side of the separation tube 9 is fixed with a positioning rod 906. The front end of the moving rod 803 is sleeved on the circumferential position of the positioning rod 906 through the moving hole 804. Four strip-shaped openings 907 are evenly arranged on the circumferential wall of the positioning rod 906. The front part of the inner side wall of the moving hole 804 is fixed with four sliding blocks 805 arranged in the inner position of the strip-shaped opening 907. When the rotating rod 8 drives the metal plate 802 to separate from the magnetic ring plate 404, the moving hole 804 at the end of the moving rod 803 will slide on the surface position of the positioning rod 906, and will drive the sliding block 805 to move in the inner position of the strip-shaped opening 907. The rear side wall of the separation box 4 is fixed with a magnetic ring plate 404 attracted to the metal plate 802 at the position outside the rotating hole 403.

[0040] Through the above structure, when it is necessary to adjust the angle of the separation tube 9, the separation tube 9 needs to be rotated. At this time, the rotating rod 8 can be pulled to separate the metal plate 802 from the magnetic ring plate 404. The rotating rod 8 can be rotated by the handle 801, and the rotating rod 8 drives the rotation of the moving rod 803. The moving rod 803 rotates the positioning rod 906 through the sliding block 805, so that the separation tube 9 rotates around the axis rod 905, and the port position of the separation tube 9 pulls the corrugated tube 1 902 and the corrugated tube 2 903, so as to adjust the inclination of the separation tube 9. After the inclination angle of the separation tube 9 is adjusted, the rotating rod 8 is slowly released, and the metal plate 802 is attracted to the magnetic ring plate 404. The sliding block 805 positions the positioning rod 906 to ensure that the separation tube 9 will not be angularly deviated after the angle adjustment is completed.

[0041] Among them, Figure 1 , 2As shown, the left and right side walls of the separation box 4 are fixed with flow pipes 402 corresponding to the port positions of the separation pipe 9, the flow pipes 402 are fixedly connected with the ports of the adjacent corrugated pipes 902 respectively, an air extraction pump 7 is arranged between the flash tank 1 and the separation box 4, the air inlet end of the air extraction pump 7 is connected with the adjacent flow pipe 402 through a pipeline, the working of the air extraction pump 7 is controlled, so that the air extraction pump 7 can extract the flash steam in the separation pipe 9 into the inside of the flash tank 1, the air outlet end of the air extraction pump 7 is connected with the air inlet end of the flash tank 1 through a pipeline, the position between the air outlet end of the flash tank 1 and the air inlet end of the gas storage tank 2 is connected with a two-way pipe 101, a one-way valve 6 is fixedly arranged at the middle position of the two-way pipe 101, because the one-way valve 6 is arranged at the position of the two-way pipe 101, the flash steam in the flash tank 1 flows into the inside of the gas storage tank 2 from the position of the two-way pipe 101, and the flash steam is blocked by the one-way valve 6, so that when the flash steam is compressed in the inside of the gas storage tank 2, the flash steam can be prevented from flowing back to the inside of the flash tank 1 from the position of the two-way pipe 101.

[0042] As shown in the figure, Figure 3 , 4 As shown, the inside bottom side of the separation box 4 below the separation pipe 9 is fixed with a U-shaped frame 901, the middle position of the separation pipe 9 is in the inside of the U-shaped frame 901, the shaft rod 905 on the side wall of the U-shaped frame 901 is rotationally connected with the front and rear side walls of the separation pipe 9, the middle position of the upper side wall of the separation box 4 is fixed with a connecting pipe 401, the upper end of the corrugated pipe 903 is fixedly connected with the lower end of the connecting pipe 401, when the shaft rod 905 is rotated by the positioning rod 906, the shaft rod 905 rotates on the front and rear side walls of the U-shaped frame 901.

[0043] As shown in the figure, Figures 3 to 6 The front and rear side walls of the strip-shaped port 907 are fixed with limiting rods 908, the middle side wall of the sliding block 805 is slidably sleeved with the limiting rods 908 through the sliding holes 806, the limiting rods 908 on the rear side wall of the sliding block 805 are slidably sleeved with springs 909, the surface of the rotating rod 8 is fixed with a plurality of annularly arranged handle rods 801, when the rotating rod 8 moves away from the separation box 4, the rotating rod 8 drives the moving rod 803 to slide outwardly away from the surface of the positioning rod 906, so that the moving rod 803 is compressed by the sliding of the sliding block 805 in the strip-shaped port 907, when the sliding block 805 moves, the sliding block 805 slides in the limiting rods 908 through the sliding holes 806, when the sliding block 805 is limited in the inside of the strip-shaped port 907, the moving rod 803 is limited, so that the moving rod 803 can be prevented from being separated from the surface of the positioning rod 906, when the rotating rod 8 is loosened, the springs 909 push the sliding block 805, so that the rotating rod 8 is also pushed, and the metal plate 802 is stably adsorbed by the magnetic ring plate 404.

[0044] The above are only preferred embodiments of the present application, and do not limit the present application. Any modification, equivalent replacement, improvement of the technical solutions described in the foregoing embodiments, any modification, equivalent replacement, improvement of part of the technical features, all belong to the protection scope of the present application.

Claims

1. A decarbonization flash vapor pressurization recovery device for ammonia synthesis production, comprising a flash tank (1), characterized in that: A separation box (4) is provided at the left side of the flash tank (1), and a gas storage tank (2) is provided at the front of the flash tank (1). A refrigerator (5) connected to the interior is fixed at the middle of the front side wall of the separation box (4), and a separation pipe (9) is provided inside the separation box (4). The left and right ports of the separation tube (9) are each fixed with a corrugated pipe one (902), the middle position of the upper side wall of the separation tube (9) is fixed with a central tube (904), and the port position of the central tube (904) is fixed with a corrugated pipe two (903). A rotating hole (403) is provided through the middle of the rear side wall of the separation box (4). A rotating rod (8) is provided on the rear side of the outside of the separation box (4) at the position corresponding to the rotating hole (403). A metal plate (802) that is connected to the rear side wall of the separation box (4) is fixed at the front end of the rotating rod (8). Among them, a moving rod (803) passing through the inside of the rotating hole (403) is fixed at the middle position of the front side wall of the metal plate (802), and two symmetrically arranged shafts (905) are fixed on the front and rear middle side walls of the peripheral side wall of the separation tube (9), and a positioning rod (906) is fixed at the rear end of the shaft (905) on the rear side of the separation tube (9). The front end of the moving rod (803) is sleeved on the periphery of the positioning rod (906) through a moving hole (804). The positioning rod (906) has four strip-shaped openings (907) evenly distributed in a ring on its periphery wall. The front part of the inner side wall of the moving hole (804) is fixed with four sliders (805) that are slidably disposed inside the strip-shaped openings (907). A magnetic ring plate (404) that is attracted to the metal plate (802) is fixed on the rear side wall of the separation box (4) at a position outside the rotating hole (403).

2. The decarbonization flash vapor pressurization recovery device for ammonia synthesis production according to claim 1, characterized in that: A compressor (3) connected to the gas storage tank (2) is located on the left side.

3. The decarbonization flash vapor pressurization recovery device for ammonia synthesis production according to claim 1, characterized in that: The left and right side walls of the separation box (4) are each fixed with a flow pipe (402) at the port position of the separation pipe (9), and the flow pipe (402) is fixedly connected to the port of the nearby corrugated pipe (902).

4. A decarbonization flash vapor pressurization recovery device for ammonia synthesis production according to claim 3, characterized in that: An air pump (7) is provided at the position between the flash tank (1) and the separation box (4). The air inlet of the air pump (7) is connected to the nearby flow pipe (402) through a pipe, and the air outlet of the air pump (7) is connected to the air inlet of the flash tank (1) through a pipe.

5. A decarbonization flash vapor pressurization recovery device for ammonia synthesis production according to claim 4, characterized in that: A two-way pipe (101) is connected between the outlet end of the flash tank (1) and the inlet end of the gas storage tank (2), and a one-way valve (6) is fixed in the middle of the two-way pipe (101).

6. A decarbonization flash vapor pressurization recovery device for ammonia synthesis production according to claim 1, characterized in that: A U-shaped frame (901) is fixed to the bottom of the separation box (4) directly below the separation tube (9). The middle part of the separation tube (9) is located inside the U-shaped frame (901). The shaft (905) on the side wall of the U-shaped frame (901) is rotatably connected to the front and rear side walls of the separation tube (9).

7. A decarbonization flash vapor pressurization recovery device for ammonia synthesis production according to claim 1, characterized in that: A connecting pipe (401) is fixed in the middle of the upper side wall of the separation box (4), and the upper port of the second corrugated pipe (903) is fixedly connected to the lower port of the connecting pipe (401).

8. A decarbonization flash vapor pressurization recovery device for ammonia synthesis production according to claim 1, characterized in that: Limiting rods (908) are fixed between the front and rear side walls of the strip-shaped opening (907), and the middle side wall of the slider (805) is slidably sleeved on the surface of the limiting rods (908) through the through-holes (806).

9. A decarbonization flash vapor pressurization recovery device for ammonia synthesis production according to claim 8, characterized in that: Springs (909) are slidably sleeved on the side of the limiting rod (908) on the rear side wall of the slider (805), and multiple grips (801) are fixed on the side of the rotating rod (8) in a ring-shaped arrangement.

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