Ammonia gas diluting device for ammonia production denitration system
By designing a mixing mechanism in the ammonia dilution device, using components such as hollow columns, hollow arms and fan blades to increase the contact area between ammonia and air, the problem of low ammonia density is solved, and a more efficient ammonia dilution is achieved.
Patent Information
- Application Number
- CN202421774939.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-25
- Publication Date
- 2025-04-25
- Estimated Expiration
- 2034-07-25
AI Technical Summary
Due to the low density in the dilution device, ammonia may remain on the top of the air or the inner bottom of the device, resulting in a reduced dilution effect.
An ammonia dilution device including a regeneration tower, heat exchange tube, blower, air pipe, induced fan and electric heating box is designed. A mixing mechanism uses hollow columns, hollow arms and fan blades to increase the contact area between air and ammonia, and drives the fan blades to rotate to avoid ammonia accumulation.
By increasing the contact area between air and ammonia, the dilution effect of ammonia is improved, and the accumulation of ammonia at the bottom of the device is avoided, thereby improving the efficiency of the dilution process.
Smart Images
Figure CN222789032U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of ammonia dilution devices, in particular to an ammonia dilution device for an ammonia production and denitration system. Background Art
[0002] Ammonia is a chemical substance with the chemical formula NH3. It is a colorless gas with a pungent odor. Ammonia is widely used in industrial production, for example, as a fertilizer, refrigerant, detergent, etc. In addition, ammonia can also be used to prepare other chemical substances, such as nitric acid. When preparing ammonia, it needs to be denitrated. After the ammonia water is vaporized, the ammonia concentration must not be too high to cause an explosion. Therefore, a large amount of hot air must be introduced for dilution. The temperature of this diluted air after mixing with the evaporated ammonia must be at least >120℃ to ensure that the ammonia-air mixture injected into the activated coke will not be lower than the dew point of water, so as to avoid ammonia dissolving in water and being unable to denitrify in the form of ammonia.
[0003] When ammonia is diluted, the existing device directly discharges ammonia and hot air into a mixing tank, and then stirs and mixes them through a stirring mechanism. However, the density of ammonia is lower than that of air, which causes the ammonia to be retained at the top of the air when discharged into the device. Direct discharge of air may reduce the contact effect between air and ammonia. At the same time, ammonia can be retained at the bottom of the device, thereby reducing the effect of diluting ammonia. Utility Model Content
[0004] 1. Technical issues to be resolved
[0005] In view of the deficiencies in the prior art, the utility model provides an ammonia dilution device for an ammonia production and denitrification system to solve the technical problem that the density of ammonia is lower than that of air, which causes ammonia to be retained at the top of the air when discharged into the device, and the contact effect between air and ammonia may be reduced when the air is directly discharged. At the same time, ammonia may be retained at the inner bottom of the device, thereby reducing the effect of diluting ammonia.
[0006] (II) Technical solution
[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an ammonia dilution device for an ammonia production and denitrification system, comprising: a regeneration tower, a heat exchange tube, a blower, an air pipe, an induced draft fan and an electric heating box, the heat exchange tube is embedded in the front and back sides of the regeneration tower, the blower is connected to the left side of the regeneration tower, the air pipe is connected to the right side of the regeneration tower, and the bottom of the air pipe is connected to the induced draft fan, the electric heating box is connected and installed on the right side of the induced draft fan, the bottom of the electric heating box 6 is connected to a motor through a fixing frame, the right side of the electric heating box is connected to an air intake pipe, and the interior of the electric heating box is connected to a mixing mechanism.
[0008] The mixing mechanism includes a hollow column, and the bottom of the hollow column is connected to the output end of the motor, the top of the hollow column is rotatably connected to a bent pipe, and the bent pipe is connected to the induced draft fan, the outside of the hollow column is connected to hollow arms at equal intervals, and the other end of the hollow arm is connected to a long plate, and the outside of the hollow column is connected to fan blades at equal intervals.
[0009] Preferably, the top and bottom of the hollow column are both sleeved with first spherical bearings, and the first spherical bearings are connected to the inner wall of the electric heating box, and the first spherical bearings can support and install the hollow column.
[0010] Preferably, a second spherical bearing is embedded in the top of the hollow column, and the interior of the second spherical bearing is connected to the bent pipe. The second spherical bearing can prevent the hollow column from affecting the connection with the bent pipe when rotating.
[0011] Preferably, the hollow arm is a hollow tube with openings on both sides, and exhaust holes are evenly spaced at the top and bottom of the hollow arm, and the exhaust holes can discharge the air inside the hollow arm to increase the contact area with ammonia.
[0012] Preferably, a stop valve is connected to the outside of the air intake pipe, and the stop valve is connected to the air intake pipe via a flange, and the stop valve can close the air intake pipe.
[0013] Preferably, a ball valve is installed on the front of the air pipe, and the ball valve is controlled by an electronic actuator, so that the air pipe can control the air intake of the air pipe.
[0014] (III) Beneficial effects
[0015] Compared with the prior art, the utility model provides an ammonia dilution device for an ammonia production and denitrification system, which has the following beneficial effects:
[0016] The ammonia production and denitrification system uses an ammonia dilution device. When the ammonia is diluted, the air mixed with the ammonia is sprayed over a large area through the added mixing mechanism, thereby increasing the contact area between the air and the ammonia, thereby increasing the dilution effect of the ammonia. At the same time, the mixing mechanism will also drive the added fan blades to rotate when rotating, thereby preventing the ammonia from accumulating at the inner bottom of the electric heating box, thereby further increasing the dilution effect of the ammonia. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 It is a front schematic diagram of the utility model;
[0018] Figure 2 This is a front sectional view of the electric heating box of the utility model;
[0019] Figure 3 This is a front view schematic diagram of the mixing mechanism of the utility model;
[0020] Figure 4 It is a front sectional view of the mixing mechanism of the utility model.
[0021] In the figure: 1. regeneration tower; 2. heat exchange tube; 3. blower; 4. air pipe; 41. ball valve; 5. induced draft fan; 51. elbow; 6. electric heating box; 61. air inlet pipe; 611. stop valve; 62. motor; 7. mixing mechanism; 71. hollow column; 711. first spherical bearing; 712. second spherical bearing; 72. hollow arm; 721. exhaust hole; 73. long board; 8. fan blade. DETAILED DESCRIPTION
[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0023] The utility model provides a technical solution, please refer to Figure 1 and Figure 2 , an ammonia dilution device for an ammonia production and denitrification system, comprising: a regeneration tower 1, a heat exchange tube 2, a blower 3, an air tube 4, an induced draft fan 5 and an electric heating box 6. This scheme is a structural improvement on the non-electronic component part based on the ammonia dilution device in the prior art, wherein the regeneration tower 1, the heat exchange tube 2, the blower 3, the air tube 4, the induced draft fan 5 and the electric heating box 6 are common ammonia dilution device products that have been promoted in the prior art, the heat exchange tube 2 can heat the air inside the regeneration tower 1, the blower 3 can introduce the air into the regeneration tower 1, the air tube 4 cooperates with the induced draft fan 5 to discharge the air into the electric heating box 6, the electric heating box 6 can mix and dilute the air, and the temperature of the electric heating box 6 and the heat exchange tube 2 are both controlled by an external induction controller.
[0024] The heat exchange tube 2 is embedded in the front and back sides of the regeneration tower 1, the blower 3 is connected to the left side of the regeneration tower 1, the air pipe 4 is connected to the right side of the regeneration tower 1, and the bottom of the air pipe 4 is connected to the induced draft fan 5, a ball valve 41 is installed on the front of the air pipe 4, and the ball valve 41 is controlled by an electronic actuator, and the air pipe 4 can control the air intake of the air pipe 4, the electric heating box 6 is connected and installed on the right side of the induced draft fan 5, the bottom of the electric heating box 6 is connected to the motor 62 through a fixing frame, the right side of the electric heating box 6 is connected to the intake pipe 61, the outside of the intake pipe 61 is connected to the stop valve 611, and the stop valve 611 is connected to the intake pipe 61 through a flange, the stop valve 611 can close the intake pipe 61, and the inside of the electric heating box 6 is connected to the mixing mechanism 7;
[0025] See also Figure 3and Figure 4 The mixing mechanism 7 includes a hollow column 71, which can transmit the hollow arm 72. The top and bottom of the hollow column 71 are both sleeved with a first spherical bearing 711, and the first spherical bearing 711 is connected to the inner wall of the electric heating box 6. The first spherical bearing 711 can support and install the hollow column 71. A second spherical bearing 712 is embedded in the top of the hollow column 71, and the interior of the second spherical bearing 712 is connected to the bent pipe 51. The second spherical bearing 712 can prevent the hollow column 71 from affecting the connection relationship with the bent pipe 51 during rotation, and the bottom of the hollow column 71 is connected to the output end of the motor 62.
[0026] The top of the hollow column 71 is rotatably connected to a bend pipe 51, and the bend pipe 51 is connected to the induced draft fan 5. The outside of the hollow column 71 is evenly connected to hollow arms 72. During the rotation process, the hollow arm 72 can discharge air into the interior of the electric heating box 6 to mix with ammonia. The hollow arm 72 is a hollow tube with openings on both sides, and exhaust holes 721 are evenly spaced at the top and bottom of the hollow arm 72. The exhaust holes 721 can discharge the air inside the hollow arm 72 to increase the contact area with ammonia. The other end of the hollow arm 72 is connected to a long plate 73, and the long plate 73 can mix and stir the air and ammonia. The outside of the hollow column 71 is evenly connected to fan blades 8. The rotation of the fan blades 8 can press the ammonia gathered at the top of the electric heating box 6 into the inner middle part of the electric heating box 6.
[0027] In this scheme, air is discharged into the interior of the regeneration tower 1 through the blower 3, and then the air is heated through the heat exchange tube 2. The air is then discharged into the interior of the hollow column 71 through the bend 51 through the cooperation of the air pipe 4 and the induced draft fan 5, and the ammonia is connected to the air inlet pipe 61 and discharged into the interior of the electric heating box 6. The motor 62 is started to drive the hollow column 71 to rotate. The rotating hollow column 71 discharges the air into the interior of the hollow arm 72 through centrifugal force and the drive of the induced draft fan 5, and then discharges it through the exhaust hole 721 inside the hollow arm 72, thereby increasing the release area of the ammonia inside the electric heating box 6. At the same time, when the hollow column 71 rotates, it also drives the fan blades 8 to rotate together. The rotating fan blades 8 generate airflow, and the ammonia gathered at the top of the electric heating box 6 is discharged into the inner middle part of the regeneration tower 1, thereby increasing the mixing effect with the air and increasing the dilution rate of the ammonia.
[0028] When ammonia is diluted, the air mixed with ammonia is sprayed over a large area through the added mixing mechanism 7, thereby increasing the contact area between air and ammonia, thereby increasing the dilution effect of ammonia. At the same time, the mixing mechanism 7 will also drive the added fan blades 8 to rotate when rotating, thereby preventing ammonia from accumulating at the inner bottom of the electric heating box 6, thereby further increasing the dilution effect of ammonia.
[0029] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.
[0030] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. An ammonia dilution device for an ammonia production and denitration system, comprising: A regeneration tower (1), a heat exchange tube (2), a blower (3), an air pipe (4), an induced draft fan (5) and an electric heating box (6), wherein the heat exchange tube (2) is embedded in the front and back sides of the regeneration tower (1), the blower (3) is connected to the left side of the regeneration tower (1), the air pipe (4) is connected to the right side of the regeneration tower (1), and the bottom of the air pipe (4) is connected to the induced draft fan (5), and the electric heating box (6) is connected and installed on the right side of the induced draft fan (5), characterized in that: the bottom of the electric heating box (6) is connected to a motor (62) through a fixing frame, the right side of the electric heating box (6) is connected to an air intake pipe (61), and the interior of the electric heating box (6) is connected to a mixing mechanism (7); The mixing mechanism (7) comprises a hollow column (71), wherein the bottom of the hollow column (71) is connected to the output end of the motor (62), the top of the hollow column (71) is rotatably connected to a curved pipe (51), and the curved pipe (51) is connected to the induced draft fan (5), the outside of the hollow column (71) is connected to hollow arms (72) at equal intervals, and the other end of the hollow arm (72) is connected to a long plate (73), and the outside of the hollow column (71) is connected to fan blades (8) at equal intervals.
2. The ammonia dilution device for an ammonia production and denitration system according to claim 1, characterized in that: The top and bottom of the hollow column (71) are both sleeved with a first spherical bearing (711), and the first spherical bearing (711) is connected to the inner wall of the electric heating box (6).
3. The ammonia dilution device for an ammonia production and denitration system according to claim 1, characterized in that: A second spherical bearing (712) is embedded in the top of the hollow column (71), and the interior of the second spherical bearing (712) is connected to the curved pipe (51).
4. The ammonia dilution device for an ammonia production and denitration system according to claim 1, characterized in that: The hollow arm (72) is a hollow tube with openings on both sides, and exhaust holes (721) are evenly spaced apart at the top and bottom of the hollow arm (72).
5. The ammonia dilution device for an ammonia production and denitration system according to claim 1, characterized in that: The outside of the air intake pipe (61) is connected to a stop valve (611), and the stop valve (611) is connected to the air intake pipe (61) via a flange.
6. The ammonia dilution device for an ammonia production and denitration system according to claim 1, characterized in that: A ball valve (41) is installed on the front side of the air pipe (4), and the ball valve (41) is controlled by an electronic actuator.