Batching device used in potassium nitrate production process

Abstract

The utility model provides a batching device used in a potassium nitrate production process, which relates to the technical field of potassium nitrate production devices and comprises a tank body, an outer sleeve, a tank cover, a motor, a liquid adding pipe, a stirring device, a liquid inlet, a liquid inlet pipe and a liquid outlet, a reaction chamber of the tank body is annular, a discharging pipe is arranged at the bottom of the tank body, and a columnar connecting groove is arranged in the middle of the bottom of the tank body. The jacket is arranged on the outer wall of the reaction chamber, a first temperature control cavity and a second temperature control cavity are formed among the jacket, the tank body and the side wall of the connecting groove respectively, the liquid inlet and the liquid inlet pipe are connected with the first temperature control cavity and the second temperature control cavity respectively, the liquid outlet is formed in the bottom of the connecting groove and communicated with the jacket, a feeding port is formed in the tank cover, and the motor and the liquid adding pipe are installed on the tank cover. The stirring device is arranged below the tank cover, connected with the power output end of the motor and extends into the reaction chamber, and the problems of crystallization and caking caused by non-uniform temperature distribution in the process of dissolving potassium chloride to prepare a reaction liquid in a traditional reaction tank can be solved.

Description

Technical Field

[0001] This utility model relates to the technical field of potassium nitrate production equipment, specifically to a batching device used in the potassium nitrate production process. Background Technology

[0002] Potassium nitrate is widely used in agriculture, industry, and other fields. Its production methods mainly include the metathesis method, neutralization method, and ion exchange method. Among these, the metathesis method has become the mainstream in industry due to the readily available raw materials and mature technology. This method typically uses potassium chloride and sodium nitrate or ammonium nitrate as raw materials, and produces potassium nitrate through steps such as dissolution, metathesis reaction, and crystallization separation.

[0003] In the initial stage of the metathesis process, dissolving potassium chloride to prepare the reaction solution is a crucial initial step. Its uniformity and stability directly affect the efficiency of the subsequent metathesis reaction. The specific process is as follows: potassium chloride powder or granules are added to the dissolving tank in proportion, deionized water is added and the stirring device is started. During the dissolution process, the water temperature is usually maintained at 40-60℃ to accelerate dissolution, and finally a potassium chloride solution is formed.

[0004] Traditional reaction vessels typically rely on the vessel shell and external insulation jacket for heat transfer during dissolution and reaction processes. While this design is simple, it is prone to uneven temperature distribution. The solution near the shell wall experiences rapid temperature changes due to direct contact with the heat source, while the solution in the central region, due to lagging heat conduction, often exhibits a significant temperature difference with the shell wall. This uneven temperature distribution can lead to crystallization and agglomeration when dissolving potassium chloride. In the initial dissolution phase, potassium chloride particles enter the reaction vessel. The solution near the shell, being warmer, quickly reaches or exceeds the solubility of potassium chloride, causing the particles to dissolve rapidly. However, the temperature in the central region is 10-20 degrees Celsius lower than near the shell, resulting in significantly reduced solubility. If the initial concentration of potassium chloride in the solution is high, the localized low temperature environment in the central region can cause the solution to become supersaturated, forming tiny crystal nuclei. These nuclei adhere to the surface of incompletely dissolved potassium chloride particles, hindering further dissolution and even causing particle aggregation and agglomeration. Therefore, this application proposes a batching device for the potassium nitrate production process. Utility Model Content

[0005] In order to overcome the problems in the background technology, this utility model provides a batching device for potassium nitrate production process, which solves the crystallization and agglomeration problems caused by uneven temperature distribution in the process of dissolving potassium chloride to prepare reaction solution in traditional reaction tanks.

[0006] A batching device for potassium nitrate production includes a tank, an outer casing, a tank cover, a motor, a liquid addition pipe, a stirring device, a liquid inlet, a liquid inlet pipe, and a liquid outlet. The tank has an inverted U-shaped internal cross-section, and the reaction chamber of the tank is annular. A discharge pipe is provided at the bottom of the tank, and a columnar connecting groove is located in the middle of the bottom. The outer casing is installed on the outer wall of the reaction chamber. Temperature control chamber one and temperature control chamber two are formed between the outer casing, the tank body, and the side wall of the connecting groove, respectively. The liquid inlet and the liquid inlet pipe are connected to the upper parts of temperature control chamber one and temperature control chamber two, respectively. The liquid outlet is located at the bottom of the connecting groove and communicates with the outer casing. A feeding port is provided on the tank cover. The motor and the liquid addition pipe are installed on the tank cover. The stirring device is located below the tank cover and is connected to the power output end of the motor and extends into the reaction chamber.

[0007] Furthermore, a spiral guide plate 1 and a spiral guide plate 2 are respectively installed in the temperature control cavity 1 and the temperature control cavity 2.

[0008] Furthermore, the stirring device includes a connecting rod, a stirring shaft, and stirring blades. The connecting rod is inverted T-shaped and connected to the power output end of the motor. The stirring shaft is connected to both ends of the connecting rod and extends into the reaction chamber. The stirring blades are installed at the bottom of the connecting rod.

[0009] Compared with the prior art, the beneficial effects of this utility model are:

[0010] The annular reaction chamber inside the tank of this application can carry out the potassium chloride dissolution reaction. The temperature control chamber 1 and temperature control chamber 2 inside the outer jacket can be circulated with heat-insulating medium to stabilize the temperature inside the tank. The stirring device stirs in the annular reaction chamber to make the materials uniformly mixed and heat transferred, which solves the crystallization and agglomeration problems caused by uneven temperature distribution in the process of dissolving potassium chloride to prepare reaction solution in traditional reaction tanks. Attached Figure Description

[0011] To clearly illustrate the technical solutions in the embodiments of this utility model, the accompanying drawings used in the description of the embodiments are explained.

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0013] Figure 2 This is a top view of the structure of this utility model;

[0014] Figure 3 This is a bottom view of the structure of this utility model;

[0015] Figure 4 This is a schematic diagram of the cross-sectional structure of this utility model.

[0016] 1-Tank body, 11-Reaction chamber, 12-Connecting groove, 13-Discharge pipe, 2-Outer jacket, 21-Temperature control chamber one, 22-Temperature control chamber two, 23-Guide plate one, 24-Guide plate two, 3-Tank cover, 31-Feeding port, 4-Motor, 5-Liquid filling pipe, 6-Stirring device, 61-Connecting rod, 62-Stirring shaft, 63-Stirring blade, 7-Liquid inlet, 8-Liquid inlet pipe, 9-Liquid outlet. Detailed Implementation

[0017] To make the objectives, technical solutions, and beneficial effects of this utility model clearer, the preferred embodiments of this utility model will be described in detail below with reference to the accompanying drawings, so as to facilitate the understanding of those skilled in the art.

[0018] This utility model proposes a batching device for potassium nitrate production process, see reference. Figure 1-4 The system includes a tank body 1, an outer casing 2, a tank cover 3, a motor 4, a liquid addition pipe 5, a stirring device 6, a liquid inlet 7, a liquid inlet pipe 8, and a liquid outlet 9. The internal cross-section of the tank body 1 is inverted U-shaped, and the reaction chamber 11 of the tank body 1 is annular. A discharge pipe 13 is provided at the bottom of the tank, and a columnar connecting groove 12 is located in the middle of the bottom of the tank. The outer casing 2 is provided on the outer wall of the reaction chamber 11. Temperature control chamber one 21 and temperature control chamber two 22 are formed between the outer casing 2, the tank body 1, and the side wall of the connecting groove 12, respectively. The liquid inlet 7 and the liquid inlet pipe 8 are respectively connected to the upper part of temperature control chamber one 21 and temperature control chamber two 22. The liquid outlet 9 is located at the bottom of the connecting groove 12 and communicates with the outer casing 2. A feeding port 31 is provided on the tank cover 3. The motor 4 and the liquid addition pipe 5 are installed on the tank cover 3. The stirring device 6 is located below the tank cover 3 and is connected to the power output end of the motor 4 and extends into the reaction chamber 11.

[0019] The annular reaction chamber 11 inside the tank 1 can carry out the potassium chloride dissolution reaction. Potassium chloride is added through the feeding port 31 on the tank cover 3. Other materials are added to the reaction chamber 11 through the pump connected to the liquid addition pipe 5. The temperature control chamber 1 21 and temperature control chamber 22 inside the outer jacket 2 can be connected to the heat preservation medium conveying device through the liquid inlet 7 and the liquid inlet pipe 8 to introduce the heat preservation medium and discharge it through the liquid outlet 9, so that the heat preservation medium circulates in the outer jacket 2 to achieve stable temperature control inside the tank. The motor 4 can drive the stirring device 6 to stir in the annular reaction chamber 11 to make the materials evenly mixed and heat transferred. The prepared potassium chloride solution is discharged through the discharge pipe 13.

[0020] See Figure 1-4 The temperature control chamber 1 21 and the temperature control chamber 22 are respectively equipped with a spiral guide plate 1 23 and a spiral guide plate 24, which enables the heat-insulating medium to flow and transfer heat evenly in the temperature control chamber 1 21 and the temperature control chamber 22.

[0021] See Figure 1-4The stirring device 6 includes a connecting rod 61, a stirring shaft 62, and a stirring blade 63. The connecting rod 61 is inverted T-shaped and connected to the power output end of the motor 4. The stirring shaft 62 is connected to both ends of the connecting rod 61 and extends into the reaction chamber 11. The stirring blade 63 is installed at the bottom of the connecting rod 61. The stirring shaft 62 rotates in the reaction chamber 11 under the drive of the connecting rod 61, which can make the material mix evenly, avoid crystallization and bottom agglomeration, and make heat transfer and temperature control more uniform.

[0022] Work process:

[0023] Potassium chloride is added to tank 1. The insulation medium is introduced into temperature control chamber 1 21 and temperature control chamber 2 22 through inlet 7 and inlet pipe 8. The insulation medium is discharged through outlet 9 and circulates between temperature control chamber and insulation medium conveyor. The liquid addition pipe 5 is connected to a pump to pump water into reaction chamber 11. The stirring device 6 is driven by motor 4 to stir the material in the annular reaction chamber 11 to make the material evenly mixed and heat transferred. After the reaction is completed, the material is discharged to the next process through discharge pipe 13.

[0024] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A batching device for use in the potassium nitrate production process, characterized in that: The tank includes a tank body (1), an outer casing (2), a tank cover (3), a motor (4), a liquid addition pipe (5), a stirring device (6), a liquid inlet (7), a liquid inlet pipe (8), and a liquid outlet (9). The internal cross-section of the tank body (1) is inverted U-shaped. The reaction chamber (11) of the tank body (1) is annular. A discharge pipe (13) is provided at the bottom of the tank. A columnar connecting groove (12) is located in the middle of the bottom of the tank. The outer casing (2) is located on the outer wall of the reaction chamber (11). The outer casing (2) is separated from the side wall of the tank body (1) and the connecting groove (12). Temperature control chamber 1 (21) and temperature control chamber 2 (22) are formed. The liquid inlet (7) and liquid inlet pipe (8) are connected to the upper part of temperature control chamber 1 (21) and temperature control chamber 2 (22) respectively. The liquid outlet (9) is set at the bottom of the connecting groove (12) and communicates with the outer jacket (2). The tank cover (3) is provided with a feeding port (31). The motor (4) and the liquid adding pipe (5) are installed on the tank cover (3). The stirring device (6) is set below the tank cover (3) and connected to the power output end of the motor (4) and extends into the reaction chamber (11).

2. The batching device for potassium nitrate production process according to claim 1, characterized in that: The temperature control chamber 1 (21) and temperature control chamber 2 (22) are respectively equipped with spiral guide plate 1 (23) and spiral guide plate 2 (24).

3. The batching device for potassium nitrate production process according to claim 1, characterized in that: The stirring device (6) includes a connecting rod (61), a stirring shaft (62) and a stirring blade (63). The connecting rod (61) is in an inverted T shape and connected to the power output end of the motor (4). The stirring shaft (62) is connected to both ends of the connecting rod (61) and extends into the reaction chamber (11). The stirring blade (63) is installed at the bottom of the connecting rod (61).

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