Ammonia gas generator for atomizing and pyrolyzing ammonium bicarbonate aqueous solution

Abstract

The utility model discloses an ammonium bicarbonate aqueous solution atomization pyrolysis ammonia gas generator, which belongs to the technical field of ammonia gas generation and comprises an atomization pyrolysis barrel, the atomization pyrolysis barrel is respectively communicated with a liquid inlet combination, a gas outlet pipe and a flue gas inlet pipe, the gas outlet pipe is used for ammonia gas circulation, and high-heat flue gas for assisting ammonium bicarbonate pyrolysis to generate ammonia gas is introduced into the flue gas inlet pipe; servo motors are mounted at the top end and the bottom end of the atomization pyrolysis barrel correspondingly, output shafts of the servo motors are connected with rotating rods penetrating through the atomization pyrolysis barrel, the bottom ends of the rotating rods are connected with cross-shaped mounting rods, and the top ends of the mounting rods are connected with a plurality of mounting rings with different inner diameters. The inner wall of the upper mounting ring is connected with a plurality of atomizing nozzles for atomizing liquid, and the inner wall of the lower mounting ring is connected with an air outlet nozzle for discharging air; and two hollow communicating balls are arranged in an inner cavity of the atomization pyrolysis barrel. According to the ammonium bicarbonate aqueous solution atomization pyrolysis ammonia gas generator, uniform spraying can be carried out, and the ammonia gas generation efficiency and uniformity are improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of ammonia gas generation, in particular to an ammonium bicarbonate aqueous solution atomization pyrolysis ammonia gas generator. Background Technique

[0002] The molecular formula of ammonia gas is NH3. Nitrogen-containing inorganic salts and organic intermediates, sulfonamides, polyurethanes, polyamide fibers, nitrile rubber, etc. all directly use ammonia as raw materials and are widely used in fields such as chemical industry, light industry, chemical fertilizer, pharmacy, synthetic fiber, etc. Ammonia gas is also a reducing agent for the denitration process.

[0003] At present, the vast majority of thermal power plants, steel plants and furnace denitration adopt high-temperature denitration processes, and the sources of ammonia gas mainly adopt direct injection of liquid ammonia, ammonia aqueous solution or urea aqueous solution into the boiler, etc. Obtaining ammonia gas by using liquid ammonia or ammonia aqueous solution has certain safety hazards, while spraying urea aqueous solution into the furnace will waste a large amount of high-quality heat energy, and there are certain residues during the pyrolysis of urea, which has a certain impact on the internal structure of the boiler. Content of the Utility Model

[0004] The purpose of the utility model is to provide an ammonium bicarbonate aqueous solution atomization pyrolysis ammonia gas generator to solve the problems put forward in the background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solution: an ammonium bicarbonate aqueous solution atomization pyrolysis ammonia gas generator, including an atomization pyrolysis barrel, the atomization pyrolysis barrel is respectively connected with a liquid inlet combination, an air outlet pipe for ammonia gas to flow through, and a flue gas inlet pipe, and high-temperature flue gas for assisting the pyrolysis of ammonium bicarbonate to generate ammonia gas is introduced into the flue gas inlet pipe;

[0006] Servo motors are installed at both the top and bottom of the atomization pyrolysis barrel. The output shaft of the servo motor is connected with a rotating rod that penetrates the atomization pyrolysis barrel. The bottom end of the rotating rod is connected with a cross-shaped mounting rod. The top end of the mounting rod is connected with a plurality of mounting rings with different inner diameters. The inner wall of the upper mounting ring is connected with a plurality of atomizing nozzles for atomizing the liquid, and the inner wall of the lower mounting ring is connected with an air outlet nozzle for discharging gas;

[0007] Two hollow communicating balls are arranged in the inner cavity of the atomization pyrolysis barrel. The upper communicating ball is communicated with the atomizing nozzle through an upper connecting pipe, and the lower communicating ball is communicated with the air outlet nozzle through a lower connecting pipe.

[0008] As a preferred implementation scheme, the liquid inlet combination includes a storage barrel for storing ammonium bicarbonate aqueous solution and a pressure pump. The pressure pump is connected with the storage barrel through a liquid inlet pipe. The pressure pump is connected with a liquid outlet pipe that penetrates the atomization pyrolysis barrel, and the liquid outlet pipe is communicated with the upper communicating ball through a corrugated pipe.

[0009] As a preferred embodiment, a flue gas fan for increasing the wind speed is installed on the flue gas inlet pipe, and the flue gas inlet pipe penetrates through the atomization pyrolysis barrel and is also connected to the communication ball below through a corrugated pipe.

[0010] As a preferred embodiment, the outlet pipe is connected to an external denitrification reaction device.

[0011] As a preferred embodiment, a counterweight plate is installed at the bottom end of the liquid inlet combination, and the counterweight plate is fixedly connected to the atomization pyrolysis barrel through a plurality of support legs.

[0012] As a preferred embodiment, a thermometer is installed on the outer wall of the atomization pyrolysis barrel.

[0013] Compared with the prior art, the technical effects and advantages of the present utility model are as follows:

[0014] When the ammonium bicarbonate aqueous solution atomization pyrolysis ammonia generator is in use, two servo motors drive the rotating rod to rotate forward and backward, but the rotation directions and speeds are different, so that the ammonium bicarbonate aqueous solution sprayed by the atomizing nozzle is not synchronized with the high-temperature flue gas sprayed by the air outlet nozzle. Compared with synchronous air outlet, the mixing degree of the atomized ammonium bicarbonate aqueous solution and the high-temperature flue gas is higher and more uniform;

[0015] For the ammonium bicarbonate aqueous solution atomization pyrolysis ammonia generator, multiple atomizing nozzles cooperate with a pressure pump to form a more uniform atomized ammonium bicarbonate aqueous solution, improve the contact uniformity with the flue gas, further improve the pyrolysis efficiency, and enable the ammonia generated by pyrolysis to better flow upward along the flue gas. The design of multiple air outlet nozzles can form more and more uniform air channels, assist the better pyrolysis of the atomized ammonium bicarbonate aqueous solution, and assist the better upward flow of the generated ammonia;

[0016] The ammonium bicarbonate aqueous solution atomization pyrolysis ammonia generator can perform uniform spraying, improving the efficiency and uniformity of ammonia generation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the specific embodiments of the present utility model or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0018] Figure 1 is a structural schematic diagram of the present utility model;

[0019] Figure 2 is a cross-sectional view of the atomization pyrolysis barrel of the present utility model;

[0020] Figure 3This is a schematic structural diagram of the installation rod and the installation ring of the present utility model.

[0021] Explanation of reference numerals:

[0022] In the figure:

[0023] 1 - atomization pyrolysis barrel; 2 - liquid inlet combination; 3 - gas outlet pipe; 4 - flue gas inlet pipe; 5 - servo motor; 6 - rotating rod; 7 - installation ring; 8 - atomizing nozzle; 9 - gas outlet nozzle; 10 - connecting ball; 11 - upper connecting pipe; 12 - lower connecting pipe; 13 - flue gas fan; 14 - installation rod; 15 - counterweight plate; 16 - support leg; 17 - thermometer;

[0024] 21 - storage barrel; 22 - pressure pump; 23 - liquid inlet pipe; 24 - liquid outlet pipe. Specific implementation mode

[0025] In the following description, a large number of specific details are given to provide a more thorough understanding of the present utility model. However, it is obvious to those skilled in the art that the present utility model can be implemented without one or more of these details. In other examples, in order to avoid confusion with the present utility model, some well-known technical features in the art are not described.

[0026] Unless otherwise defined, the up, down, left, right, front, back, inside and outside directions involved in this article are based on the up, down, left, right, front, back, inside and outside directions in the figure shown by the present utility model, and are hereby explained together.

[0027] The connection method can adopt existing methods such as bonding, welding, bolt connection, etc., subject to actual needs.

[0028] Due to the special chemical environment of this application, all structures and instruments are subject to specific protective treatments and are regularly repaired and maintained.

[0029] Please refer to Figures 1 to 3 As shown, an ammonium bicarbonate aqueous solution atomization pyrolysis ammonia generator, this embodiment includes an atomization pyrolysis barrel 1, a thermometer 17 is installed on the outer wall of the atomization pyrolysis barrel 1, the thermometer 17 includes a display part and a measurement part, the measurement part is in the inner cavity of the atomization pyrolysis barrel 1, the atomization pyrolysis barrel 1 is respectively connected to a liquid inlet combination 2, a gas outlet pipe 3 for ammonia circulation and a flue gas inlet pipe 4, and high-temperature flue gas for assisting the pyrolysis of ammonium bicarbonate to generate ammonia is introduced into the flue gas inlet pipe 4;

[0030] Servo motors 5 are installed at both the top and bottom of the atomization pyrolysis barrel 1. The angle by which the servo motor 5 drives the rotating rod 6 to rotate does not exceed 360 degrees and will rotate back and forth to prevent the corrugated pipe from being damaged. The rotation of the two servo motors 5 in different directions and at different speeds changes the positions of the atomizing nozzle 8 and the air outlet 9, enhancing the degree of chaos. The output shaft of the servo motor 5 is connected to a rotating rod 6 that penetrates through the atomization pyrolysis barrel 1. The bottom end of the rotating rod 6 is connected to a cross-shaped mounting rod 14. The top end of the mounting rod 14 is connected to multiple mounting rings 7 with different inner diameters. The inner wall of the upper mounting ring 7 is connected with multiple atomizing nozzles 8 for atomizing the liquid. The pressure pump 22 pumps the liquid, and then the atomized ammonium bicarbonate aqueous solution is sprayed out from the atomizing nozzles 8. The inner wall of the lower mounting ring 7 is connected with an air outlet 9 for discharging gas. The flue gas fan 13 assists the external high-temperature flue gas to discharge from the air outlet 9, thereby driving the ammonium bicarbonate aqueous solution to flow upward. During this process, the high-temperature flue gas contacts the ammonium bicarbonate aqueous solution, realizing the pyrolysis of the ammonium bicarbonate aqueous solution and generating ammonia gas.

[0031] There are two hollow connecting balls 10 arranged in the inner cavity of the atomization pyrolysis barrel 1. The upper connecting ball 10 is connected to the atomizing nozzle 8 through an upper connecting pipe 11, and the lower connecting ball 10 is connected to the air outlet 9 through a lower connecting pipe 12.

[0032] The liquid inlet assembly 2 includes a storage barrel 21 storing the ammonium bicarbonate aqueous solution and a pressure pump 22. The pressure pump 22 is connected to the storage barrel 21 through a liquid inlet pipe 23. The pressure pump 22 is connected to a liquid outlet pipe 24 that penetrates through the atomization pyrolysis barrel 1. The liquid outlet pipe 24 is connected to the upper connecting ball 10 through a corrugated pipe.

[0033] The temperature of the ammonium bicarbonate aqueous solution in the storage barrel 21 does not exceed sixty degrees, because exceeding sixty degrees will accelerate pyrolysis. The temperature of the high-temperature flue gas is about one hundred and twenty degrees, ensuring the thoroughness of the pyrolysis of the ammonium bicarbonate aqueous solution.

[0034] A flue gas fan 13 for increasing the wind speed is installed on the flue gas inlet pipe 4, and the flue gas inlet pipe 4 also penetrates through the atomization pyrolysis barrel 1 and is connected to the lower connecting ball 10 through a corrugated pipe.

[0035] The outlet pipe 3 is connected to an external denitration reaction device.

[0036] A counterweight plate 15 is installed at the bottom end of the liquid inlet assembly 2. The counterweight plate 15 is fixedly connected to the atomization pyrolysis barrel 1 through multiple support legs 16. The counterweight plate 15 is detachably connected to the ground through bolts.

[0037] The servo motor 5, the thermometer 17, and the pressure pump 22 are all conventional instruments. Their working principles, dimensions, and models are not related to the problems solved by this application, so no more description will be given. The control method of this utility model is controlled by a controller. The control circuit of the controller can be realized by simple programming by those skilled in the art. The provision of power also belongs to the common knowledge in this field. Moreover, this utility model is mainly used to protect mechanical devices, so the control method and circuit connection of this utility model will not be explained in detail.

[0038] Working principle

[0039] For this ammonium bicarbonate aqueous solution atomization and pyrolysis ammonia generator, the flue gas fan 13, the pressure pump 22, and the two servo motors 5 are started synchronously. The pressure pump 22 pumps the liquid and then sprays the atomized ammonium bicarbonate aqueous solution from the atomizing nozzle 8. During this process, the flue gas fan 13 assists the external high-temperature flue gas to exit from the air outlet 9, thereby driving the ammonium bicarbonate aqueous solution to flow upward. During this process, the high-temperature flue gas contacts the ammonium bicarbonate aqueous solution to achieve the pyrolysis of the ammonium bicarbonate aqueous solution, thereby generating ammonia, which finally exits from the outlet pipe 3. The rotation of the two servo motors 5 in different directions and at different speeds changes the positions of the atomizing nozzle 8 and the air outlet 9, enhancing the degree of chaos.

[0040] It should be noted that in this article, relational terms such as "one" and "two" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation. An element defined by the statement "including a..." does not exclude the existence of additional identical elements in the process, method, article or device including the said element.

[0041] Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. An ammonium bicarbonate aqueous solution atomization pyrolysis ammonia generator, comprising an atomization pyrolysis barrel (1), characterized in that: The atomization pyrolysis barrel (1) is respectively connected with a liquid inlet assembly (2), an air outlet pipe (3) for ammonia gas flow, and a flue gas inlet pipe (4). High-temperature flue gas for assisting the pyrolysis of ammonium bicarbonate to generate ammonia gas is introduced into the flue gas inlet pipe (4). Servo motors (5) are installed at both the top and bottom of the atomization pyrolysis barrel (1). The output shafts of the servo motors (5) are connected with rotating rods (6) passing through the atomization pyrolysis barrel (1). The bottom end of the rotating rod (6) is connected with a cross-shaped mounting rod (14). The top end of the mounting rod (14) is connected with a plurality of mounting rings (7) with different inner diameters. The inner wall of the upper mounting ring (7) is connected with a plurality of atomizing nozzles (8) for atomizing liquid, and the inner wall of the lower mounting ring (7) is connected with an air outlet nozzle (9) for discharging gas. Two hollow communicating balls (10) are arranged in the inner cavity of the atomization pyrolysis barrel (1). The upper communicating ball (10) is communicated with the atomizing nozzles (8) through an upper connecting pipe (11), and the lower communicating ball (10) is communicated with the air outlet nozzle (9) through a lower connecting pipe (12).

2. The ammonium bicarbonate aqueous solution atomization pyrolysis ammonia generator according to claim 1, characterized in that, The liquid inlet assembly (2) includes a storage barrel (21) storing ammonium bicarbonate aqueous solution and a pressure pump (22). The pressure pump (22) is communicated with the storage barrel (21) through a liquid inlet pipe (23). The pressure pump (22) is connected with a liquid outlet pipe (24) passing through the atomization pyrolysis barrel (1). The liquid outlet pipe (24) is communicated with the upper communicating ball (10) through a corrugated pipe.

3. The ammonium bicarbonate aqueous solution atomization pyrolysis ammonia generator according to claim 1, characterized in that, A flue gas fan (13) for increasing the wind speed is installed on the flue gas inlet pipe (4), and the flue gas inlet pipe (4) passes through the atomization pyrolysis barrel (1) and is also communicated with the lower communicating ball (10) through a corrugated pipe.

4. The ammonia generator by atomizing and pyrolyzing an aqueous ammonium bicarbonate solution according to claim 1, characterized in that, The air outlet pipe (3) is communicated with an external denitration reaction device.

5. The ammonia gas generator by atomizing and pyrolyzing an aqueous ammonium bicarbonate solution according to claim 1, characterized in that A counterweight plate (15) is installed at the bottom end of the liquid inlet assembly (2). The counterweight plate (15) is fixedly connected with the atomization pyrolysis barrel (1) through a plurality of support legs (16).

6. The ammonia generator by atomizing and pyrolyzing an aqueous ammonium bicarbonate solution according to claim 5, characterized in that, A thermometer (17) is installed on the outer wall of the atomization pyrolysis barrel (1).

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