Ammonia distillation tower for producing soda ash from waste sodium sulfate

Abstract

The utility model relates to the technical field of ammonia distillation tower, the utility model provides a kind of waste sodium sulfate is used to make soda ash with ammonia distillation tower, it includes floor, the top of floor is provided with vacuum filter, the top of floor is provided with dissolving box, the top of floor is provided with ammonia distillation tower body, the side of vacuum filter is connected with conveying pipe and penetrates, the side of dissolving box is connected with connecting pipe and penetrates, the side of ammonia distillation tower body is provided with heating equipment. The side of ammonia distillation tower body is provided with automatic add auxiliary agent device, the automatic add auxiliary agent device includes material box, the side of material box is fixedly connected on the circumference of ammonia distillation tower body, the inboard of ammonia distillation tower body is provided with inlet. Through the above technical scheme, the technical problem that cannot evaporate quickly and evenly in the prior art is solved.

Description

Technical Field

[0001] This utility model relates to the field of ammonia stripping tower technology, specifically, to an ammonia stripping tower for producing soda ash from waste sodium sulfate. Background Technology

[0002] An ammonia stripping tower is a device used in industry to treat ammonia-containing wastewater or gas. It is widely used in wastewater treatment, gas absorption, and chemical reactions. Its main function is to remove ammonia or ammonified substances from water using the principles of evaporation and gas exchange. It is commonly used in industries such as wastewater treatment, chemical engineering, and agriculture.

[0003] According to a public announcement (Announcement No.: CN215974991U), an apparatus for producing sodium carbonate and ammonium sulfate using sodium sulfate and CO2 includes a sodium sulfate ammonialation system, a sodium bicarbonate system, a soda ash system, and an ammonium sulfate system. The sodium sulfate ammonialation system comprises, in sequence, a waste ammonia water storage tank, a first ammonia stripping tower, an ammonia absorption tower, a mother liquor storage tank, and a sodium sulfate dissolving tank. The sodium bicarbonate system comprises, in sequence, a compressor, a filter, a buffer tank, a carbonation tower, a tail gas absorption tower, a pre-carbonation tower, and a water washing tower. The soda ash system comprises, in sequence, a sodium bicarbonate thickener, a centrifuge, a calcining furnace, and a CO2 compressor. The ammonium sulfate system comprises, in sequence, a second ammonia stripping tower, a first reaction vessel, a second reaction vessel, and an ammonium sulfate reaction vessel, wherein the second ammonia stripping tower forms a circulation system via a reboiler. This invention reduces environmental pollution, achieves resource regeneration, and can co-produce ammonium bicarbonate, soda ash, and ammonium sulfate, with low cost and energy consumption, resulting in good economic benefits.

[0004] The aforementioned patent achieves resource regeneration through the coordinated use of components such as the first ammonia stripping tower, the ammonia absorption tower, and the mother liquor storage tank. It can co-produce ammonium bicarbonate, soda ash, and ammonium sulfate, resulting in low cost and energy consumption and good economic benefits. However, it cannot achieve better results in the rapid evaporation and conversion of waste sodium sulfate. Therefore, we propose an ammonia stripping tower for producing soda ash from waste sodium sulfate. Utility Model Content

[0005] To overcome the above-mentioned defects, this utility model provides an ammonia stripping tower for producing soda ash from waste sodium sulfate, which solves the technical problem of the inability to achieve rapid and uniform evaporation in the prior art.

[0006] According to one aspect, at least one embodiment of the present invention provides an ammonia stripping tower for producing soda ash from waste sodium sulfate, comprising: a floor, a vacuum filter disposed on the top of the floor, a dissolving tank disposed on the top of the floor, an ammonia stripping tower body disposed on the top of the floor, a conveying pipe being connected through the side of the vacuum filter, a connecting pipe being connected through the side of the dissolving tank, a heating device being disposed on the side of the ammonia stripping tower body, and a rapid evaporation device being disposed at the bottom inner side of the ammonia stripping tower body; The rapid evaporation equipment includes a motor, the bottom of which is fixedly connected to the inner bottom of the ammonia stripping tower. A rotating shaft is fixedly connected to the motor's output shaft. A fixing plate is fixedly connected to the inner side of the ammonia stripping tower. A stirring rod is fixedly connected to the circumferential surface of the rotating shaft, and a connecting block is fixedly connected to the circumferential surface of the rotating shaft. Fan-shaped stirring blades are fixedly connected to the side of the connecting block. The main purpose of this structural design is to promote rapid evaporation and reaction of the liquid through the auxiliary action of stirring and airflow, thereby improving the overall efficiency of the ammonia stripping tower and ultimately achieving better conversion of waste sodium sulfate and recovery of soda ash.

[0007] For example, in at least one embodiment of this utility model, an ammonia stripping tower for producing soda ash from waste sodium sulfate is provided, further comprising: multiple openings on the side of the fan-shaped stirring blades. The design of multiple openings not only optimizes the gas-liquid contact within the ammonia stripping tower and accelerates the evaporation and chemical reaction rates, but also improves stirring efficiency and enhances the overall performance of the equipment.

[0008] Multiple openings are arranged in a circumferential array along the circumference of the fan-shaped stirring blades, and multiple fan-shaped stirring blades and connecting blocks are provided. The design of the circumferential array of openings and the arrangement of multiple fan-shaped stirring blades and connecting blocks effectively increases the gas-liquid contact area, improves the stirring effect, accelerates the evaporation process, increases reaction efficiency, and enhances the stability and durability of the equipment. These designs optimize the overall performance of the rapid evaporation equipment and enhance the efficiency of the process of converting waste sodium sulfate into soda ash.

[0009] Multiple fan-shaped stirring blades and connecting blocks are arranged in a circumferential array along the rotating shaft, with the other end of the conveying pipe penetrating the side of the ammonia stripping tower. This design, with multiple fan-shaped stirring blades and connecting blocks arranged in a circumferential array along the rotating shaft, combined with the gas conveying function of the conveying pipe, significantly enhances the gas-liquid contact and reaction uniformity within the ammonia stripping tower. By rationally arranging the fan-shaped stirring blades, connecting blocks, and conveying pipe, the gas-liquid mixing, heat transfer, reaction efficiency, and evaporation rate within the tower are optimized, ultimately improving the overall performance of the ammonia stripping tower and the efficiency of converting waste sodium sulfate into soda ash.

[0010] The connecting pipe extends through the side of the ammonia stripping tower, and multiple stirring rods are provided. The combined function of the connecting pipe and the stirring rods is to ensure the smooth progress of the reaction process within the ammonia stripping tower, enhance the mixing effect of the materials, improve reaction efficiency, and prevent sedimentation or unevenness.

[0011] Multiple stirring rods are arranged in a circumferential array along the circumference of a rotating shaft, one end of which extends through the top of a fixed plate. This circumferential array of stirring rods helps improve mixing uniformity and promotes mixing and reaction between materials. The shaft's extension through the top of the fixed plate provides stable support for the entire stirring system, ensuring equipment stability, reducing vibration, extending service life, and improving reaction efficiency and material conversion rate.

[0012] According to another aspect, at least one embodiment of this utility model also provides an ammonia stripping tower for producing soda ash from waste sodium sulfate, comprising: an automatic additive addition device provided on the side of the ammonia stripping tower body; the automatic additive addition device including a material box; the side of the material box being fixedly connected to the circumferential surface of the ammonia stripping tower body; an inlet being opened on the inner side of the ammonia stripping tower body; a sliding cover plate being slidably connected to the inner side of the inlet; a force-bearing rod being fixedly connected to the side of the sliding cover plate; and a striking rod being fixedly connected to the top of the stirring rod. The purpose of this design is to precisely control the amount of additive added through the automatic additive addition device, ensuring the stability and efficiency of the reaction process. The material box stores the additive, the inlet serves as the channel for the additive, the sliding cover plate and the force-bearing rod control the amount of additive added, and the stirring rod and the striking rod help to uniformly stir and automatically control the opening and closing of the sliding cover plate, ensuring that the additive can be added to the reaction in a timely and accurate manner. This system improves the level of automation and reaction efficiency, thereby achieving the effect of forming a stable supersaturated solution of sodium bicarbonate, providing a stable driving force for crystal growth.

[0013] For example, in at least one embodiment of this utility model, a soda ash production tower using waste sodium sulfate further includes: the side of the force-bearing rod is located on the displacement trajectory of the impact rod, and a fixing rod is fixedly connected to the side of the sliding cover plate. The force-bearing rod, impact rod, sliding cover plate, and fixing rod function in the entire system to ensure precise movement and stable system operation through precise coordination and force transmission.

[0014] A return spring is fixedly connected to the side of the fixing rod, and one end of the return spring is fixedly connected to the inner side of the feed inlet. The return spring ensures that the sliding cover can automatically return to its original position after the external force is removed, keeping the automatic additive dosing device of the ammonia stripping tower in normal working condition, preventing the sliding cover from deviating from the correct position, thereby improving the automation level, reliability and operational accuracy of the system.

[0015] A feeding port is connected through the top of the hopper, and a plug is inserted into the top of the feeding port. The feeding port and the plug together control the flow of material, seal and protect the material inside the hopper. The plug, inserted into the feeding port, prevents material leakage, keeps the system clean, and provides a convenient way to open the hopper when needed.

[0016] The beneficial effects of the embodiments of this utility model are as follows: 1. In this utility model, the motor, rotating shaft, and stirring rod work together to achieve the following: Starting the motor drives the rotating shaft to rotate, which in turn drives the stirring rod to rotate. The rotating shaft then drives the connecting block to rotate, which in turn drives the fan-shaped stirring blades to rotate. This process rapidly evaporates and reacts the liquid while preventing precipitation. This improves the overall efficiency of the ammonia stripping tower, ultimately achieving better conversion of waste sodium sulfate and recovery of soda ash.

[0017] 2. In this invention, the motor, rotating shaft, stirring rod, impact rod, and material bin work together to achieve the following: Starting the motor drives the rotating shaft to rotate, which in turn drives the stirring rod to rotate. The stirring rod then drives the impact rod to rotate, which in turn pushes the force-bearing rod to move horizontally. This horizontal movement of the force-bearing rod causes the sliding cover plate to move horizontally, exposing the feed inlet. The additive then flows into the ammonia stripping tower through the feed inlet for catalysis. This improves the automation level and reaction efficiency. It also ensures that the sodium bicarbonate solution forms a stable supersaturated solution, providing a stable driving force for crystal growth. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model, the accompanying drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are merely some exemplary embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the content of the exemplary embodiments of this utility model and these drawings without any creative effort.

[0019] Figure 1 This is a schematic diagram of the front view of one embodiment of the present invention; Figure 2 This is a side view of the structure in one embodiment of the present invention; Figure 3 This is a schematic diagram of the structure of a rapid evaporation device in one embodiment of the present invention; Figure 4 This is a schematic diagram of the automatic additive adding device in one embodiment of the present invention; Figure 5 This is a side-sectional structural diagram of one embodiment of the present invention; Figure 6 As one embodiment of this utility model Figure 4 An enlarged structural diagram of A in the middle; Figure 7 As one embodiment of this utility model Figure 5 An enlarged structural diagram of B in the diagram.

[0020] In the diagram: 1. Floor; 2. Vacuum filter; 3. Dissolving tank; 4. Ammonia stripping tower; 5. Conveying pipe; 6. Connecting pipe; 7. Heating equipment; 8. Rapid evaporation equipment; 9. Automatic additive adding device; 81. Motor; 82. Rotating shaft; 83. Fixing plate; 84. Stirring rod; 85. Connecting block; 86. Fan-shaped stirring blade; 87. Opening; 91. Material box; 92. Inlet; 93. Sliding cover plate; 94. Force rod; 95. Impact rod; 96. Fixing rod; 97. Return spring; 98. Feed port; 99. Plug. Detailed Implementation

[0021] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit its scope.

[0022] To keep the drawings concise, only the parts relevant to the utility model are shown schematically in each drawing; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of the components with the same structure or function is schematically shown, or only one is labeled. In this document, "a" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."

[0023] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0024] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0025] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0026] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0027] like Figures 1-7 As shown, it illustrates an ammonia stripping tower for producing soda ash from waste sodium sulfate according to an embodiment of the present invention, comprising: a floor 1, a vacuum filter 2 installed on the top of the floor 1, a dissolving tank 3 installed on the top of the floor 1, an ammonia stripping tower body 4 installed on the top of the floor 1, a conveying pipe 5 penetratingly connected to the side of the vacuum filter 2, a connecting pipe 6 penetratingly connected to the side of the dissolving tank 3, a heating device 7 installed on the side of the ammonia stripping tower body 4, and a rapid evaporation device 8 installed at the bottom inner side of the ammonia stripping tower body 4; The rapid evaporation device 8 includes a motor 81, the bottom of which is fixedly connected to the bottom inner side of the ammonia stripping tower 4. The output shaft of the motor 81 is fixedly connected to a rotating shaft 82. A fixing plate 83 is fixedly connected to the inner side of the ammonia stripping tower 4. A stirring rod 84 is fixedly connected to the circumferential surface of the rotating shaft 82, and a connecting block 85 is fixedly connected to the circumferential surface of the rotating shaft 82. A fan-shaped stirring blade 86 is fixedly connected to the side of the connecting block 85. The main purpose of this structural design is to promote rapid evaporation and reaction of the liquid through the auxiliary action of stirring and airflow, thereby improving the overall efficiency of the ammonia stripping tower 4 and ultimately achieving better conversion of waste sodium sulfate and recovery of soda ash.

[0028] In some examples, the side of the fan-shaped stirring blade 86 has openings 87, and multiple openings 87 are provided. The design of multiple openings 87 can not only optimize the gas-liquid contact of the ammonia stripping tower 4 and accelerate the evaporation and chemical reaction rate, but also improve the stirring efficiency and enhance the overall working performance of the equipment.

[0029] Multiple openings 87 are arranged in a circumferential array along the circumference of the fan-shaped stirring blades 86, and multiple fan-shaped stirring blades 86 and connecting blocks 85 are provided. The circumferential array of openings 87 and the arrangement of multiple fan-shaped stirring blades 86 and connecting blocks 85 effectively increase the gas-liquid contact area, improve the stirring effect, accelerate the evaporation process, increase reaction efficiency, and enhance the stability and durability of the equipment. These designs optimize the overall performance of the rapid evaporation equipment 8 and enhance the efficiency of the process of converting waste sodium sulfate into soda ash.

[0030] Multiple fan-shaped stirring blades 86 and connecting blocks 85 are arranged in a circumferential array along the rotating shaft 82, with the other end of the conveying pipe 5 penetrating the side of the ammonia stripping tower 4. This design, with multiple fan-shaped stirring blades 86 and connecting blocks 85 arranged in a circumferential array along the rotating shaft 82, combined with the gas conveying function of the conveying pipe 5, significantly enhances the gas-liquid contact and reaction uniformity inside the ammonia stripping tower 4. By rationally arranging the fan-shaped stirring blades 86, connecting blocks 85, and conveying pipe 5, the gas-liquid mixing, heat transfer, reaction efficiency, and evaporation rate within the tower are optimized, ultimately improving the overall performance of the ammonia stripping tower 4 and the efficiency of converting waste sodium sulfate into soda ash.

[0031] The connecting pipe 6 runs through the side of the ammonia stripping tower 4, and multiple stirring rods 84 are installed. The combined function of the connecting pipe 6 and the stirring rods 84 is to ensure the smooth progress of the reaction process inside the ammonia stripping tower 4, enhance the mixing effect of the materials, improve the reaction efficiency, and avoid sedimentation or unevenness.

[0032] Multiple stirring rods 84 are arranged in a circular array along the circumference of a rotating shaft 82, one end of which penetrates the top of a fixed plate 83. This arrangement of the stirring rods 84 along the circumference of the rotating shaft 82 helps improve mixing uniformity and promotes mixing and reaction between materials. The penetration of one end of the rotating shaft 82 through the top of the fixed plate 83 provides stable support for the entire stirring system, ensuring equipment stability, reducing vibration, extending service life, and improving reaction efficiency and material conversion rate.

[0033] For example, such as Figures 1-7 As shown, after the motor 81 is started, the motor 81 drives the rotating shaft 82 to rotate at high speed through the transmission system. The rotation of the rotating shaft 82 further drives the stirring rod 84 connected to it to rotate, and the rotation of the rotating shaft 82 drives the connecting block 85 to rotate. The rotation of the connecting block 85 drives the fan-shaped stirring blade 86 to rotate rapidly. This powerful stirring action not only accelerates the evaporation of the liquid and the chemical reaction process, but also effectively prevents the precipitation of solid substances in the liquid. Continuous stirring ensures that the liquid is mixed evenly and avoids the accumulation of precipitates, thereby improving the efficiency and stability of the entire process.

[0034] like Figures 1-7As shown, this invention illustrates an ammonia stripping tower for producing soda ash from waste sodium sulfate, comprising: an automatic additive addition device 9 installed on the side of the ammonia stripping tower body 4; the automatic additive addition device 9 includes a material box 91, the side of which is fixedly connected to the circumferential surface of the ammonia stripping tower body 4; an inlet 92 opened on the inner side of the ammonia stripping tower body 4; a sliding cover 93 slidably connected to the inner side of the inlet 92; a force-bearing rod 94 fixedly connected to the side of the sliding cover 93; and a striking rod 95 fixedly connected to the top of the stirring rod 84. The purpose of this design is to precisely control the amount of additive added through the automatic additive addition device 9, ensuring the stability and efficiency of the reaction process. The material box 91 stores the additive, the inlet 92 serves as the channel for the additive, the sliding cover 93 and the force-bearing rod 94 control the amount of additive added, and the stirring rod 84 and the striking rod 95 help to uniformly stir and automatically control the opening and closing of the sliding cover 93, ensuring that the additive is added to the reaction in a timely and accurate manner. This system improves the level of automation and reaction efficiency, thereby achieving the effect of forming a stable supersaturated solution of sodium bicarbonate, providing a stable driving force for crystal growth.

[0035] In some examples, the side of the force-bearing rod 94 is located on the displacement trajectory of the impact rod 95, and the side of the sliding cover plate 93 is fixedly connected to the fixing rod 96. The role of the force-bearing rod 94, impact rod 95, sliding cover plate 93, and fixing rod 96 in the whole system is to ensure the accuracy of movement and the stable operation of the system through precise cooperation and force transmission.

[0036] A return spring 97 is fixedly connected to the side of the fixed rod 96, and one end of the return spring 97 is fixedly connected to the inner side of the feed inlet 92. The return spring 97 ensures that the sliding cover 93 can automatically return to its original position after the external force is removed, keeping the automatic additive dosing device 9 of the ammonia stripping tower 4 in normal working condition, and preventing the sliding cover 93 from deviating from the correct position, thereby improving the automation level, reliability and operation accuracy of the system.

[0037] A feed port 98 is connected through the top of the material hopper 91, and a plug 99 is inserted into the top of the feed port 98. The feed port 98 and the plug 99 together control the flow of material, seal and protect the material inside the material hopper 91. The plug 99, by being inserted into the feed port 98, prevents material leakage, keeps the system clean, and provides a convenient way to open for feeding when needed.

[0038] For example, such as Figures 1-7As shown, the motor 81 is started, and the motor 81 drives the rotating shaft 82 to rotate. The rotation of the rotating shaft 82 drives the stirring rod 84 to rotate, and the rotation of the stirring rod 84 drives the impact rod 95 to rotate. The rotation of the impact rod 95 pushes the force rod 94 to move horizontally. The horizontal movement of the force rod 94 drives the sliding cover plate 93 to move horizontally, thus exposing the feed inlet 92. The additives then flow into the ammonia stripping tower body 4 through the feed inlet 92 for catalysis. When the force rod 94 loses its thrust, the reset spring 97 pushes the fixing rod 96 to reset. The reset of the fixing rod 96 drives the sliding cover plate 93 to reset, thus closing the feed inlet 92.

[0039] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. An ammonia stripping tower for producing soda ash from waste sodium sulfate, characterized in that, include: Floor (1), a vacuum filter (2) is provided on the top of the floor (1), a dissolving tank (3) is provided on the top of the floor (1), an ammonia stripping tower (4) is provided on the top of the floor (1), a conveying pipe (5) is connected through the side of the vacuum filter (2), a connecting pipe (6) is connected through the side of the dissolving tank (3), a heating device (7) is provided on the side of the ammonia stripping tower (4), and a rapid evaporation device (8) is provided at the bottom inside the ammonia stripping tower (4). The rapid evaporation device (8) includes a motor (81), the bottom of which is fixedly connected to the bottom of the ammonia stripping tower (4). The output shaft of the motor (81) is fixedly connected to a rotating shaft (82). A fixing plate (83) is fixedly connected to the inner side of the ammonia stripping tower (4). A stirring rod (84) is fixedly connected to the circumferential surface of the rotating shaft (82). A connecting block (85) is fixedly connected to the circumferential surface of the rotating shaft (82). A fan-shaped stirring blade (86) is fixedly connected to the side of the connecting block (85).

2. The ammonia stripping tower for producing soda ash from waste sodium sulfate according to claim 1, characterized in that, The side of the fan-shaped stirring blade (86) is provided with openings (87), and there are multiple openings (87).

3. The ammonia stripping tower for producing soda ash from waste sodium sulfate according to claim 2, characterized in that, Multiple openings (87) are arranged in a circumferential array along the circumferential surface of the fan-shaped stirring blade (86), and multiple fan-shaped stirring blades (86) and connecting blocks (85) are provided.

4. The ammonia stripping tower for producing soda ash from waste sodium sulfate according to claim 3, characterized in that, Multiple fan-shaped stirring blades (86) and connecting blocks (85) are arranged in a circumferential array along the circumferential surface of the rotating shaft (82), and the other end of the conveying pipe (5) penetrates the side of the ammonia stripping tower body (4).

5. The ammonia stripping tower for producing soda ash from waste sodium sulfate according to claim 4, characterized in that, The connecting pipe (6) penetrates the side of the ammonia stripping tower body (4), and multiple stirring rods (84) are provided.

6. The ammonia stripping tower for producing soda ash from waste sodium sulfate according to claim 5, characterized in that, Multiple stirring rods (84) are arranged in a circumferential array along the circumferential surface of a rotating shaft (82), one end of which passes through the top of a fixed plate (83).

7. The ammonia stripping tower for producing soda ash from waste sodium sulfate according to claim 6, characterized in that, An automatic additive addition device (9) is provided on the side of the ammonia stripping tower body (4). The automatic additive addition device (9) includes a material box (91). The side of the material box (91) is fixedly connected to the circumferential surface of the ammonia stripping tower body (4). An inlet (92) is opened on the inner side of the ammonia stripping tower body (4). A sliding cover plate (93) is slidably connected to the inner side of the inlet (92). A force-bearing rod (94) is fixedly connected to the side of the sliding cover plate (93). A battering rod (95) is fixedly connected to the top of the stirring rod (84).

8. The ammonia stripping tower for producing soda ash from waste sodium sulfate according to claim 7, characterized in that, The side of the force-bearing rod (94) is located on the displacement trajectory of the impact rod (95), and the side of the sliding cover plate (93) is fixedly connected to a fixing rod (96).

9. The ammonia stripping tower for producing soda ash from waste sodium sulfate according to claim 8, characterized in that, A return spring (97) is fixedly connected to the side of the fixed rod (96), and one end of the return spring (97) is fixedly connected to the inner side of the feed inlet (92).

10. The ammonia stripping tower for producing soda ash from waste sodium sulfate according to claim 9, characterized in that, The top of the hopper (91) is connected to a feeding port (98), and a rubber plug (99) is inserted into the top of the feeding port (98).

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