Manganese sulfate evaporation crystallization device

Abstract

The utility model belongs to the technical field of manganese sulfate evaporation crystallization, specifically relates to a kind of manganese sulfate evaporation crystallization device, including crystallizing tank and the cover of being set at the top of crystallizing tank, heater is arranged on the inner wall of the bottom of crystallizing tank, and steam heat exchange assembly is arranged on the crystallizing tank, steam heat exchange assembly includes the cavity being opened in crystallizing tank, water and spiral condenser pipe are arranged in the cavity, cover is provided with the gas duct of steam entering, and air draught fan is arranged on the gas duct, and the gas duct side is connected with spiral condenser pipe air inlet.The device can recycle the heat in steam, keep the crystallizing tank in high temperature all the time, and keep the state of heat preservation, without increasing the consumption of energy, thereby improving the crystallization efficiency.

Description

Technical Field

[0001] This invention belongs to the field of manganese sulfate evaporation and crystallization technology, specifically relating to a manganese sulfate evaporation and crystallization apparatus. Background Technology

[0002] In the development of modern chemical industry, manganese sulfate, as a key chemical raw material, is widely used in many fields such as agriculture, medicine, and electronics. The evaporation and crystallization process in its production and purification is crucial, directly affecting the quality, yield, and economic efficiency of the product.

[0003] Traditional manganese sulfate evaporation crystallization technology and the equipment used have revealed a series of significant problems in practical applications. During the evaporation process, a large amount of high-temperature and high-energy steam is directly released into the surrounding environment without any restraint. On the one hand, this results in a huge waste of valuable thermal energy, making the energy utilization efficiency of the entire production process low; on the other hand, the disorderly release of large amounts of hot steam significantly increases the heat load on the environment, adversely affecting the temperature and humidity of the surrounding environment.

[0004] Furthermore, due to the lack of effective heat recovery and reuse mechanisms in traditional equipment, the heat of the solution continuously dissipates to the outside during the crystallization process, especially under conditions of low ambient temperature or good ventilation, where the rate of heat loss is even faster. In order to maintain the temperature conditions necessary for crystallization, additional heat energy needs to be continuously input, which undoubtedly greatly increases energy consumption and leads to a significant increase in production costs.

[0005] To address this, we propose a manganese sulfate evaporation crystallization device that can recover and utilize the heat from the steam, keeping the crystallizer at a constant high temperature and temperature without increasing energy consumption, thereby improving crystallization efficiency. Utility Model Content

[0006] The purpose of this invention is to provide a manganese sulfate evaporation crystallization device that can recover and utilize the heat in the steam, keeping the crystallization tank at a high temperature and in a constant state of heat preservation without increasing energy consumption, thereby improving crystallization efficiency.

[0007] The specific technical solution adopted in this utility model is as follows:

[0008] A manganese sulfate evaporation crystallization apparatus includes a crystallization tank and a cover disposed on the top of the crystallization tank. A heater is disposed on the inner wall of the bottom of the crystallization tank, and a steam heat exchange component is disposed on the crystallization tank.

[0009] The steam heat exchange assembly includes a cavity formed on the crystallization tank, inside which water and a spiral condenser are arranged. A steam guide pipe is provided on the cover to allow steam to enter, and an induced draft fan is provided on the steam guide pipe. One side of the steam guide pipe is connected to the air inlet of the spiral condenser.

[0010] Furthermore, the cover is provided with a liquid inlet pipe and a water inlet pipe, and the bottom of the crystallization tank is provided with a discharge pipe and a drain pipe.

[0011] Furthermore, the exhaust port of the spiral condenser tube extends through the crystallization tank, and a sealing sleeve is provided at the point where the spiral condenser tube penetrates the crystallization tank.

[0012] Furthermore, a heat insulation layer is provided on one side wall of the cavity, and a heat-conducting layer is provided on the other side wall of the cavity.

[0013] Furthermore, a motor is provided on the cover, and a rotating shaft located inside the crystallization tank is installed at the output end of the motor, with a stirring rod provided on the outside of the rotating shaft.

[0014] Furthermore, a scraper is provided on one side of the stirring rod to fit against the inner wall of the crystallization tank.

[0015] The technical effects achieved by this utility model are as follows:

[0016] First, a manganese sulfate solution is introduced into the crystallization tank. Then, the power is turned on and the heater is activated, continuously heating the manganese sulfate solution in the crystallization tank. Heat is transferred to the solution, giving water molecules sufficient energy to intensify their movement, thus overcoming intermolecular attraction and transforming them from a liquid phase to a gas phase, forming water vapor. This water vapor gradually rises, and simultaneously, the pump starts operating, generating suction. Under the action of the pump, the water vapor rising to the top of the crystallization tank is rapidly drawn into the gas guide pipe. The water vapor then enters the spiral condenser tube along the gas guide pipe. Because the spiral condenser tube is immersed in water within the cavity, the water vapor comes into contact with the low-temperature condenser tube wall. At this point, the heat of the water vapor is rapidly transferred to the condenser tube wall and the surrounding water, causing its own temperature to drop sharply. As the temperature decreases, the kinetic energy of the water molecules in the water vapor decreases, the intermolecular distance narrows, and it gradually transforms from a gaseous state to a liquid state. During this phase transition, a large amount of latent heat released is absorbed by the water in the cavity, causing the water temperature to rise. The cooled and condensed liquid water, under the influence of gravity and the subsequent steam, is discharged to the external processing device through the outlet of the spiral condenser. As the evaporation process continues, the solution in the crystallizer continuously loses water, and the concentration of manganese sulfate gradually increases. When the solution reaches a supersaturated state, the manganese sulfate solute will precipitate in the form of crystals. The generated hot water introduces heat into the crystallizer, thus keeping the crystallizer at a high temperature and in a constant state of heat preservation, thereby improving the crystallization efficiency. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the internal structure of this utility model;

[0019] Figure 3 This is a cross-sectional view of the crystallization tank of this utility model;

[0020] Figure 4 This is a schematic diagram of the structure of the stirring rod of this utility model.

[0021] The attached diagram lists the components represented by each number as follows:

[0022] 1. Crystallizer; 2. Cover; 3. Heater; 4. Cavity; 5. Spiral condenser; 6. Gas guide pipe; 7. Liquid inlet pipe; 8. Water inlet pipe; 9. Discharge pipe; 10. Drain pipe; 11. Motor; 12. Shaft; 13. Stirring rod; 14. Scraper. Detailed Implementation

[0023] To make the purpose and advantages of this utility model clearer, the following detailed description is provided in conjunction with embodiments. It should be understood that the following text is merely used to describe one or more specific implementations of this utility model and does not strictly limit the scope of protection specifically claimed by this utility model.

[0024] like Figure 1-4 As shown, the specific technical solution adopted in this utility model is as follows: a manganese sulfate evaporation crystallization device, including a crystallization tank 1 and a cover 2 disposed on the top of the crystallization tank 1, a heater 3 disposed on the inner wall of the bottom of the crystallization tank 1, and a steam heat exchange component disposed on the crystallization tank 1;

[0025] The steam heat exchange assembly includes a cavity 4 opened on the crystallization tank 1, inside which water and a spiral condenser 5 are installed. A steam guide pipe 6 is provided on the cover 2 to allow steam to enter. An induced draft fan is installed on the steam guide pipe 6, and one side of the steam guide pipe 6 is connected to the air inlet of the spiral condenser 5.

[0026] The cover 2 is equipped with a liquid inlet pipe 7 and a water inlet pipe 8. The bottom of the crystallization tank 1 is equipped with a discharge pipe 9 and a drain pipe 10. The manganese sulfate solution enters the crystallization tank 1 through the liquid inlet pipe 7, and the water inlet pipe 8 allows water to enter the cavity 4. The crystallized manganese sulfate is discharged through the discharge pipe 9, and the water inside the cavity 4 is discharged through the drain pipe 10.

[0027] Furthermore, the cover 2 and the crystallizer 1 are detachably connected. This connection method is a bolt connection or a snap-fit ​​connection, which facilitates the installation and disassembly of the cover 2 and the crystallizer 1, and also facilitates the inspection of the spiral condenser 5 and the internal maintenance of the crystallizer 1. This is existing technology and will not be elaborated on here.

[0028] Meanwhile, the exhaust port of the spiral condenser 5 extends through the crystallizer 1, which allows the condensed water to be discharged. A sealing sleeve (not shown in the figure) is provided at the point where the spiral condenser 5 penetrates the crystallizer 1 to prevent water leakage.

[0029] The heater 3 is controlled by an external power source or controller. When the controller is turned on, the heater 3 can heat up. The heater 3 is model 304 heater 3, which is existing technology. Its control circuit and connection method will not be described in detail here.

[0030] It should be noted that, in order to display the steam pressure, a pressure gauge can be set up in this utility model to detect and control the pressure of the spiral condenser 5. The pressure gauge is installed in accordance with the design requirements. At the same time, the exhaust port of the spiral condenser 5 can introduce water and a part of the steam into the external treatment device. The treatment device is generally a two-stage condenser and a three-stage condenser. The uncondensed steam is condensed again by the two-stage condenser and the three-stage condenser. This is the prior art and will not be described in detail here.

[0031] The induced draft fan in this utility model is a CX-100A medium-pressure induced draft fan for steam transportation. The CX-100A is a high-performance fan product widely used in applications requiring steam transportation, and features high efficiency and energy saving. During operation, it can significantly reduce energy consumption and improve energy utilization efficiency. This is existing technology and will not be elaborated upon further here.

[0032] A heat insulation layer is provided on one side wall of cavity 4, and a heat-conducting layer is provided on the other side wall of cavity 4. The heat insulation layer can prevent heat loss and achieve the effect of heat preservation, while the heat-conducting layer can allow heat to be introduced into the crystallization tank 1.

[0033] The insulation layer can be made of aluminum foil insulation rolls, which are made of aluminum foil, polyethylene, fiber, and metal coating pressed together with hot melt adhesive. It has excellent heat insulation, moisture-proof and waterproof effects, and is easy to install. The heat-conducting layer can be made of copper and graphite materials, which have good thermal conductivity.

[0034] A motor 11 is installed on the cover 2. A rotating shaft 12 located inside the crystallization tank 1 is installed at the output end of the motor 11. A stirring rod 13 is installed on the outside of the rotating shaft 12. The motor 11 drives the rotating shaft 12 to rotate the stirring rod 13, thereby stirring the manganese sulfate solution to make the heat distribution uniform and improve the crystallization effect.

[0035] Meanwhile, a scraper 14 is provided on one side of the stirring rod 13 to fit against the inner wall of the crystallization tank 1. The scraper 14 can scrape off the manganese sulfate crystals that are stuck to the inner wall of the crystallization tank 1, which can not only improve the crystallization efficiency, but also ensure the purity and quality of the crystals.

[0036] The working principle of this utility model is as follows: First, a manganese sulfate solution is introduced into the crystallization tank 1. Then, the power is turned on to start the heater 3, which continuously heats the manganese sulfate solution in the crystallization tank 1. Heat is transferred to the solution, giving the water molecules sufficient energy to intensify their movement, thus overcoming the intermolecular attraction and transforming them from a liquid phase to a gas phase, forming water vapor. This water vapor gradually rises, and simultaneously, the pump starts operating, generating suction. Under the action of the pump, the water vapor rising to the top of the crystallization tank 1 is rapidly drawn into the gas guide pipe 6. The water vapor enters the spiral condenser 5 along the gas guide pipe 6. Since the spiral condenser 5 is immersed in the water in the cavity 4, the water vapor comes into contact with the low-temperature condenser wall. At this time, the heat of the water vapor is rapidly transferred to the condenser wall and the surrounding water, causing its own temperature to drop sharply. As the temperature decreases, the kinetic energy of the water molecules in the water vapor decreases, the intermolecular distance narrows, and it gradually transforms from a gaseous state to a liquid state. During this phase transition, a large amount of latent heat released is absorbed by the water in cavity 4, causing the water temperature to rise. The cooled and condensed liquid water, under the influence of gravity and the subsequent steam, is discharged to the external processing device through the outlet of the spiral condenser 5. As the evaporation process continues, the solution in crystallizer 1 continuously loses water, and the concentration of manganese sulfate gradually increases. When the solution reaches a supersaturated state, the manganese sulfate solute precipitates in the form of crystals. The generated hot water introduces heat into the interior of crystallizer 1, thus keeping crystallizer 1 at a high temperature and in a constant state of heat preservation, thereby improving the crystallization efficiency. This device can recover and utilize the heat in the steam to keep the crystallizer 1 heated without increasing energy consumption, thereby improving the crystallization efficiency.

[0037] The above description is merely a preferred embodiment of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model. Structures, devices, and operating methods not specifically described or explained in this utility model, unless otherwise specified or limited, shall be implemented using conventional methods in the art.

Claims

1. A manganese sulfate evaporation crystallization apparatus, comprising a crystallization tank (1) and a cover (2) disposed on the top of the crystallization tank (1), wherein a heater (3) is disposed on the inner wall of the bottom of the crystallization tank (1), and a steam heat exchange assembly is disposed on the crystallization tank (1); Its features are: The steam heat exchange assembly includes a cavity (4) opened on the crystallization tank (1), inside which water and a spiral condenser (5) are provided. A steam guide pipe (6) is provided on the cover (2) to allow steam to enter. An induced draft fan is provided on the steam guide pipe (6), and one side of the steam guide pipe (6) is connected to the air inlet of the spiral condenser (5).

2. The manganese sulfate evaporation and crystallization apparatus according to claim 1, characterized in that: The cover (2) is provided with a liquid inlet pipe (7) and a water inlet pipe (8), and the bottom of the crystallization tank (1) is provided with a discharge pipe (9) and a drain pipe (10).

3. The manganese sulfate evaporation and crystallization apparatus according to claim 1, characterized in that: The exhaust port of the spiral condenser (5) extends through the crystallizer (1), and a sealing sleeve is provided at the part where the spiral condenser (5) penetrates the crystallizer (1).

4. The manganese sulfate evaporation and crystallization apparatus according to claim 1, characterized in that: A heat insulation layer is provided on one side wall of the cavity (4), and a heat-conducting layer is provided on the other side wall of the cavity (4).

5. The manganese sulfate evaporation and crystallization apparatus according to claim 1, characterized in that: A motor (11) is provided on the cover (2), and a rotating shaft (12) located inside the crystallization tank (1) is installed at the output end of the motor (11). A stirring rod (13) is provided on the outside of the rotating shaft (12).

6. The manganese sulfate evaporation and crystallization apparatus according to claim 5, characterized in that: A scraper (14) is provided on one side of the stirring rod (13) to fit against the inner wall of the crystallizing tank (1).

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