An evaporator for producing ammonium perchlorate mother liquor

Abstract

This utility model relates to the field of ammonium perchlorate mother liquor evaporation technology, specifically disclosing an evaporator for ammonium perchlorate mother liquor production. The evaporator includes an evaporating tank with a heating base at the bottom of its inner side. The heating base has a frustum-shaped structure and contains an electric heater. A preheating tank is located on one side of the evaporating tank. An agitator rod is located inside the evaporating tank, equipped with agitating blades and a scraping mechanism. A transmission mechanism is located at the top of the evaporating tank, connecting the agitator rod to the transmission mechanism. The evaporation outlet at the top of the evaporating tank is connected to an air inlet at the lower end of one side of the preheating tank via a connecting pipe. Both the evaporating tank and the preheating tank have liquid inlets at their tops, and a discharge port is located at the lower end of one side of the evaporating tank. This utility model, through a series of structural features, achieves uniform stirring, evaporation, and heating; efficient scraping and evaporation heating; convenient discharge; and the use of waste heat from evaporation to preheat the ammonium perchlorate mother liquor, reducing evaporation energy consumption and promoting energy conservation and environmental protection. The evaporation and agitation synchronously drive the preheating and agitation, ensuring uniform preheating.

Description

Technical Field

[0001] This utility model relates to the field of ammonium perchlorate mother liquor evaporation technology, specifically an evaporator for producing ammonium perchlorate mother liquor. Background Technology

[0002] Ammonium perchlorate mother liquor evaporation refers to the process of evaporating the water in ammonium perchlorate mother liquor by heating it, thereby concentrating the mother liquor.

[0003] Currently, during the evaporation process of ammonium perchlorate mother liquor production, the solidified evaporation crystals solidify on the inner wall surface of the equipment, hindering the transfer of evaporation heating. Furthermore, the evaporation discharge is inconvenient, and the high-temperature gas generated during the evaporation of ammonium perchlorate mother liquor is directly emitted. Moreover, the energy consumption required for evaporation heating in the production of ammonium perchlorate mother liquor is high, resulting in poor practicality. Utility Model Content

[0004] The purpose of this invention is to provide an evaporator for the production of ammonium perchlorate mother liquor, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an evaporator for producing ammonium perchlorate mother liquor, comprising an evaporating tank, a heating seat at the bottom of the inner side of the evaporating tank, the heating seat being a frustum structure, an electric heater inside the heating seat, a preheating tank on one side of the evaporating tank, a stirring rod inside the evaporating tank, a stirring blade and a scraping mechanism on the stirring rod, a transmission mechanism at the top of the evaporating tank, the stirring rod being connected to the transmission mechanism, the evaporation outlet at the top of the evaporating tank being connected to the air inlet at the lower end of one side of the preheating tank via a connecting pipe, liquid inlets at the top of both the evaporating tank and the preheating tank, and a discharge port at the lower end of one side of the evaporating tank, with a discharge valve on the discharge port.

[0006] Preferably, the scraping mechanism includes a first scraper and a second scraper. The first scraper is located at the bottom of the stirring rod and is inclined at the top of the heating seat. The second scraper is located on one side of the stirring rod via a connecting rod.

[0007] Preferably, the preheating tank includes an outer tank, an inner tank, a partition, and a heating channel. The inner tank is located inside the outer tank, and a partition is provided between the outer tank and the inner tank. The partition is arranged in a spiral structure, and the partition divides the interlayer between the outer tank and the inner tank into a spiral heating channel. An air inlet is provided at the lower end of the outer tank near the evaporator, and an air outlet is provided at the upper end of the other side of the outer tank. A liquid outlet is provided at the lower end of one side of the inner tank, and a valve is provided on the liquid outlet.

[0008] Preferably, the transmission mechanism includes a first bevel gear set, a servo motor, a connecting rod, and a second bevel gear set. The first bevel gear set is provided on the top of the evaporator, and the servo motor is mounted on the top of the evaporator via a motor bracket. The output end of the servo motor is connected to the first bevel gear set via a coupling. The first bevel gear set is connected to the stirring rod. The second bevel gear set is provided on the top of the preheating tank, and the first bevel gear set is connected to the first bevel gear set via a connecting rod.

[0009] Preferably, the preheating tank is provided with a rotating rod inside, the top of the rotating rod is connected to the second bevel gear set, and the rotating rod is provided with blades.

[0010] Preferably, the bottom of the evaporator is provided with a support base, and a heat insulation layer is provided between the evaporator and the support base.

[0011] Preferably, the evaporator is composed of a heat-conducting layer, a heating layer, a heat-insulating layer and an outer shell layer. The inner side of the outer shell layer is provided with a heat-insulating layer, the side of the heat-insulating layer away from the outer shell layer is provided with a heating layer, and the side of the heating layer away from the heat-insulating layer is provided with a heat-conducting layer.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. This evaporator for producing ammonium perchlorate mother liquor uses an evaporator tank, a heating base, and an electric heater to evaporate the ammonium perchlorate mother liquor. Inside the evaporator tank, there are stirring rods, stirring blades, a first scraper, and a second scraper. These stir the ammonium perchlorate mother liquor inside the evaporator tank to ensure uniform evaporation and heating. The second scraper scrapes off the evaporated ammonium perchlorate from the inner wall of the evaporator tank. The first scraper is adapted to the heating base to scrape the material from the heating base. The evaporation and heating are highly efficient, and the material is easy to discharge.

[0014] 2. This evaporator for producing ammonium perchlorate mother liquor uses a preheating tank to circulate high-temperature gas generated in the evaporator through a spiral flow in the heating channel to preheat the ammonium perchlorate mother liquor in the inner tank. The waste heat from evaporation is used to preheat the ammonium perchlorate mother liquor, reducing evaporation energy consumption, saving energy and protecting the environment. Furthermore, the evaporation stirring and preheating stirring are driven synchronously, ensuring uniform preheating. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the evaporator in this utility model;

[0017] Figure 3 This is a schematic diagram of the stirring rod in this utility model.

[0018] In the diagram: 1. Evaporator; 2. Heating base; 3. Electric heater; 4. Preheater; 41. Outer tank; 42. Inner tank; 43. Baffle; 44. Heating channel; 5. Stirring rod; 51. Stirring blade; 52. No. 1 scraper; 53. No. 2 scraper; 6. Transmission mechanism; 61. No. 1 bevel gear set; 62. Servo motor; 63. Linkage rod; 64. No. 2 bevel gear set; 7. Connecting pipe; 8. Liquid inlet; 9. Discharge port; 10. Rotating rod; 11. Blade. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not 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. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0021] like Figures 1 to 3 As shown, the evaporator for producing ammonium perchlorate mother liquor in this embodiment includes an evaporator tank 1. A heating base 2 is located at the bottom of the inner side of the evaporator tank 1. The heating base 2 has a frustum-shaped structure and an electric heater 3 inside. The electric heater 3 uses an existing electric heating wire heater. A preheating tank 4 is located on one side of the evaporator tank 1. A stirring rod 5 is located inside the evaporator tank 1, with stirring blades 51 and a scraping mechanism on it. A transmission mechanism 6 is located at the top of the evaporator tank 1, and the stirring rod 5 is connected to the transmission mechanism 6. The evaporation outlet at the top of the evaporator tank 1 is connected to the air inlet at the lower end of one side of the preheating tank 4 via a connecting pipe 7. Both the top of the evaporator tank 1 and the preheating tank 4 have liquid inlets 8. A discharge port 9 is located at the lower end of one side of the evaporator tank 1, with a discharge valve on it. Stirring ensures uniform evaporation and heating of the ammonium perchlorate mother liquor in the evaporator tank 1. Scraping prevents crystallization in the evaporator tank 1 from hindering heat transfer. Evaporation and heating are highly efficient. Waste heat from evaporation is utilized to preheat the ammonium perchlorate mother liquor, reducing evaporation energy consumption and making it energy-saving and environmentally friendly.

[0022] Specifically, the scraping mechanism includes a first scraper 52 and a second scraper 53. The first scraper 52 is located at the bottom of the stirring rod 5 and is inclined at the top of the heating seat 2. The second scraper 53 is located on one side of the stirring rod 5 via a connecting rod. The second scraper 53 scrapes off the ammonium perchlorate evaporated from the inner wall of the evaporator 1. The heating seat 2 is set with a frustum structure. The first scraper 52 is adapted to the heating seat 2 and scrapes the material on the heating seat 2. The scraping avoids crystallization in the evaporator 1, which hinders heat transfer. The evaporation and heating are highly efficient. When discharging, the first scraper 52 and the second scraper 53 rotate to scrape the material. The ammonium perchlorate is discharged conveniently along the inclined surface of the heating seat 2 and the scraping motion of the first scraper 52.

[0023] Furthermore, the preheating tank 4 includes an outer tank 41, an inner tank 42, a partition 43, and a heating channel 44. The inner tank 42 is located inside the outer tank 41. The inner tank 42 is made of thermally conductive ceramic material, while the outer tank 41 is made of heat-insulating material. A partition 43 is provided between the outer tank 41 and the inner tank 42. The partition 43 is arranged in a spiral structure, dividing the space between the outer tank 41 and the inner tank 42 into a spiral heating channel 44. An air inlet is provided at the lower end of the outer tank 41 near the evaporator 1, and an air outlet is provided at the upper end of the other side of the outer tank 41. The air outlet is connected to existing waste gas treatment equipment, such as an air filter or waste gas treatment device, through a pipeline. The inner tank 42 of the preheating tank 4 has a liquid outlet at the lower end of one side, and a valve is provided on the liquid outlet. The liquid outlet is connected to the liquid inlet 8 of the evaporator 1 through a delivery pipe and a delivery pump. The ammonium perchlorate mother liquor is added to the inner tank 42 of the preheating tank 4 through the liquid inlet 8. The high-temperature gas generated by heating the evaporator 1 enters the heating channel 44 through the air inlet on the outer tank 41 through the evaporation outlet and the connecting pipe 7. The high-temperature gas flows along the spiral heating channel 44 divided by the partition 43 and is discharged through the air outlet. The high-temperature gas heats the ammonium perchlorate mother liquor through the heat transfer of the inner tank 42. The heated ammonium perchlorate mother liquor is transported to the evaporator 1 through the liquid outlet through the delivery pipe and the delivery pump.

[0024] Furthermore, the transmission mechanism 6 includes a first bevel gear set 61, a servo motor 62, a connecting rod 63, and a second bevel gear set 64. The first bevel gear set 61 is provided on the top of the evaporator 1, and the servo motor 62 is mounted on the top of the evaporator 1 via a motor bracket. The output end of the servo motor 62 is connected to the first bevel gear set 61 via a coupling. The first bevel gear set 61 is connected to the stirring rod 5. The second bevel gear set 64 is provided on the top of the preheating tank 4, and the first bevel gear set 61 is connected to the first bevel gear set 61 via the connecting rod 63. The servo motor 62 drives the first bevel gear set 61 to rotate, and drives the second bevel gear set 64 to rotate via the connecting rod 63. The first bevel gear set 61 drives the stirring rod 5 to rotate inside the evaporator 1.

[0025] Furthermore, the preheating tank 4 is equipped with a rotating rod 10 inside. The top of the rotating rod 10 is connected to the second bevel gear set 64. The rotating rod 10 is equipped with blades 11. The rotation of the second bevel gear set 64 drives the rotating rod 10 and blades 11 to rotate in the inner tank 42, stirring and preheating the ammonium perchlorate mother liquor in the inner tank 42.

[0026] Furthermore, the bottom of the evaporator 1 is provided with a support base, and a heat insulation layer is provided between the evaporator 1 and the support base. The bottom of the evaporator 1 is insulated and protected to reduce the heat loss of the heating base 2.

[0027] Furthermore, the evaporator 1 consists of a heat-conducting layer, a heating layer, an insulation layer, and an outer shell layer. The inner side of the outer shell layer is provided with an insulation layer, the side of the insulation layer away from the outer shell layer is provided with a heating layer, and the side of the heating layer away from the insulation layer is provided with a heat-conducting layer. The heat-conducting layer is made of silicon carbide ceramic material, the heating layer is made of electric heating wire, and the electric heating wire is placed between the insulation layer and the heat-conducting layer. The electric heating wire is spirally wound on the heat-conducting layer. The insulation layer is made of insulation rock material, and the outer shell layer is made of stainless steel.

[0028] The usage method of this embodiment is as follows: The equipment is connected to a power source, and the ammonium perchlorate mother liquor is added into the inner tank 42 of the evaporator 1 and the preheating tank 4 through the inlet 8. The electric heater 3 on the heating base 2 and the electric heating wire of the heating layer of the evaporator 1 are energized to heat and evaporate the ammonium perchlorate mother liquor in the evaporator 1. The high-temperature gas generated by the heating of the evaporator 1 enters the heating channel 44 through the air inlet on the outer tank 41 through the evaporation outlet and the connecting pipe 7. The high-temperature gas is heated along the spiral shape separated by the partition 43. Channel 44 allows for circulation, and high-temperature gas is transferred to the ammonium perchlorate mother liquor through the inner tank 42 for heat transfer. Servo motor 62 drives the first bevel gear set 61 to rotate, which in turn drives the second bevel gear set 64 to rotate via connecting rod 63. The first bevel gear set 61 drives the stirring rod 5, stirring blade 51, first scraper 52, and second scraper 53 to rotate within the evaporator 1. The stirring blade 51 heats, evaporates, and stirs the ammonium perchlorate mother liquor within the evaporator 1, ensuring uniform evaporation and heating. Scraper 53 scrapes off the solid ammonium perchlorate evaporated from the inner wall of evaporator 1. The heating seat 2, with its frustum-shaped structure, is fitted with scraper 52, which scrapes off the material. This scraping prevents crystallization in evaporator 1 from hindering heat transfer, ensuring efficient evaporation and heating. Bevel gear set 64 drives rotating rod 10 and blades 11 to rotate within inner tank 42, stirring and preheating the ammonium perchlorate mother liquor. The high-temperature gas generated in evaporator 1 is spirally circulated within heating channel 44 and used in inner tank 42. The preheating of ammonium perchlorate mother liquor utilizes the residual heat from evaporation to reduce evaporation energy consumption, making it energy-saving and environmentally friendly. Furthermore, the evaporation stirring and preheating stirring are synchronously driven by the transmission mechanism 6, ensuring uniform preheating. After evaporation in evaporator 1 is completed, the discharge valve on the discharge port 9 is opened, and scraper 1 52 and scraper 2 53 rotate to scrape the material. The ammonium perchlorate is conveniently discharged along the inclined surface of heating seat 2 and the scraping motion of scraper 1 52. After discharge, the discharge valve is closed, and the preheated ammonium perchlorate mother liquor is added to evaporator 1 through inlet 8.

[0029] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An evaporator for producing ammonium perchlorate mother liquor, comprising an evaporator tank (1), characterized in that: The bottom of the inner side of the evaporator (1) is provided with a heating seat (2), which is set in the shape of a frustum. The heating seat (2) is provided with an electric heater (3) inside. A preheating tank (4) is provided on one side of the evaporator (1). A stirring rod (5) is provided inside the evaporator (1). A stirring blade (51) and a scraping mechanism are provided on the stirring rod (5). A transmission mechanism (6) is provided at the top of the evaporator (1). The stirring rod (5) is connected to the transmission mechanism (6). The evaporation outlet at the top of the evaporator (1) is connected to the air inlet at the lower end of one side of the preheating tank (4) through a connecting pipe (7). Both the top of the evaporator (1) and the preheating tank (4) are provided with liquid inlets (8). A discharge port (9) is provided at the lower end of one side of the evaporator (1). A discharge valve is provided on the discharge port (9).

2. The evaporator for producing ammonium perchlorate mother liquor according to claim 1, characterized in that: The scraping mechanism includes a first scraper (52) and a second scraper (53). The first scraper (52) is located at the bottom of the stirring rod (5) and is inclined at the top of the heating seat (2). The second scraper (53) is located on one side of the stirring rod (5) via a connecting rod.

3. The evaporator for producing ammonium perchlorate mother liquor according to claim 1, characterized in that: The preheating tank (4) includes an outer tank (41), an inner tank (42), a partition (43), and a heating channel (44). The inner tank (42) is located inside the outer tank (41). A partition (43) is provided between the outer tank (41) and the inner tank (42). The partition (43) is arranged in a spiral structure. The partition (43) divides the interlayer between the outer tank (41) and the inner tank (42) into a spiral heating channel (44). The lower end of the outer tank (41) near the evaporator (1) is provided with an air inlet. The upper end of the other side of the outer tank (41) is provided with an air outlet. The lower end of the inner tank (42) is provided with a liquid outlet. A valve is provided on the liquid outlet.

4. The evaporator for producing ammonium perchlorate mother liquor according to claim 1, characterized in that: The transmission mechanism (6) includes a first bevel gear set (61), a servo motor (62), a connecting rod (63), and a second bevel gear set (64). The first bevel gear set (61) is provided on the top of the evaporator (1), and the servo motor (62) is mounted on the top of the evaporator (1) via a motor frame. The output end of the servo motor (62) is connected to the first bevel gear set (61) via a coupling. The first bevel gear set (61) is connected to the stirring rod (5). The second bevel gear set (64) is provided on the top of the preheating tank (4), and the first bevel gear set (61) is connected to the first bevel gear set (61) via the connecting rod (63).

5. The evaporator for producing ammonium perchlorate mother liquor according to claim 4, characterized in that: The preheating tank (4) is equipped with a rotating rod (10) inside. The top of the rotating rod (10) is connected to the second bevel gear set (64). The rotating rod (10) is equipped with blades (11).

6. The evaporator for producing ammonium perchlorate mother liquor according to claim 1, characterized in that: The bottom of the evaporator (1) is provided with a support base, and a heat insulation layer is provided between the evaporator (1) and the support base.

7. The evaporator for producing ammonium perchlorate mother liquor according to claim 1, characterized in that: The evaporator (1) consists of a heat-conducting layer, a heating layer, a heat-insulating layer and an outer shell layer. The inner side of the outer shell layer is provided with a heat-insulating layer, the side of the heat-insulating layer away from the outer shell layer is provided with a heating layer, and the side of the heating layer away from the heat-insulating layer is provided with a heat-conducting layer.

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