Separation structure of concentrated acid crystallization equipment

Abstract

The utility model belongs to the technical field of concentrated acid crystallization and separation, particularly relates to a separation structure of concentrated acid crystallization equipment, and aims to solve the problems that when concentrated acid is crystallized in an evaporative crystallization tank, evaporated and concentrated crystals are easy to coagulate into blocks and are difficult to discharge, and the processing efficiency is influenced. A sealing cover is arranged at a tank opening in the top of the crystallizing tank, the top of the sealing cover is communicated with a feeding pipe used for receiving concentrated acid solution raw materials, a feeding valve is arranged on the feeding pipe, a heating seat is arranged at the bottom of the crystallizing tank, and a discharging pipe is communicated with the center of the bottom of the crystallizing tank. When the crystallization tank is used, a concentrated acid solution is uniformly distributed in the crystallization tank under the stirring action of the stirring assembly, so that the phenomenon of local overheating or supercooling is avoided, the evaporation efficiency is improved, condensed crystal blocks can be continuously crushed in the crystallization process by arranging the crushing assembly, and the phenomenon that the condensed crystal blocks are difficult to discharge due to overlarge size is prevented; and the continuity and the stability of production are ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of concentrated acid crystallization separation, in particular to a separation structure of concentrated acid crystallization equipment. Background Art

[0002] Concentrated acid crystallization equipment is industrial equipment used to form solid crystals in concentrated acid solutions. These equipment are commonly used in the chemical, metallurgical, pharmaceutical and other industries to recover or purify acidic substances. Among them, the evaporative crystallizer is the core part of the concentrated acid crystallization equipment, which is used to provide a suitable environment to promote the formation of crystals. The separation structure of the concentrated acid crystallization equipment usually refers to the device or structure used to separate solid crystals and liquid during the concentrated acid crystallization process. Currently, when concentrated acid crystallization is carried out in an evaporative crystallizer, the crystals after evaporation and concentration tend to condense into blocks, making them difficult to discharge, affecting processing efficiency.

[0003] In response to the above problems, the present utility model document proposes a separation structure of a concentrated acid crystallization device. Utility Model Content

[0004] The utility model provides a separation structure for concentrated acid crystallization equipment, which solves the disadvantage in the prior art that when concentrated acid is crystallized in an evaporative crystallization tank, the crystals after evaporation and concentration are easily condensed into blocks, making it difficult to discharge and affecting the processing efficiency.

[0005] The utility model provides the following technical solutions:

[0006] A separation structure of a concentrated acid crystallization device, comprising:

[0007] A crystallizer, wherein a sealing cover is provided at the tank opening at the top of the crystallizer, the top of the sealing cover is connected to a feed pipe for accessing a concentrated acid solution raw material, the feed pipe is provided with a feed valve, the bottom of the crystallizer is provided with a heating seat, the center of the bottom of the crystallizer is connected to a discharge pipe, the discharge pipe is provided through the outer wall of the heating seat, and the discharge pipe is provided with a discharge valve;

[0008] A stirring assembly is provided in the crystallization tank to improve the evaporation efficiency of the concentrated acid solution;

[0009] The crushing component is installed on the stirring component to prevent the crystals after evaporation and concentration from condensing into lumps, making it difficult to discharge.

[0010] In one possible design, the stirring assembly includes a transmission rod rotatably mounted at the center of the bottom of the sealing cover, a drive motor for driving the transmission rod to rotate is fixedly mounted at the center of the top of the sealing cover, and the transmission rod is symmetrically fixed with multiple rotating blades.

[0011] In one possible design, the crushing assembly includes a row of crushing teeth fixedly arranged at the end of the rotating blade, and the top and bottom of the rotating blade are both equidistantly provided with a plurality of tooth grooves for improving the crushing effect.

[0012] In a possible design, the sealing cover is fixed to the crystallization tank by a plurality of buckles, so that the inside of the crystallization tank can be cleaned.

[0013] In one possible design, an L-shaped mounting frame is provided outside the crystallization tank, and a vacuum pump for reducing the boiling point of the concentrated acid solution is fixedly installed at the bottom of the inner wall of the L-shaped mounting frame, and the input end of the vacuum pump is connected to the inner wall of the sealing cover through an exhaust pipe.

[0014] In a possible design, a condenser for condensing steam is fixedly mounted on the side wall of the L-shaped mounting frame, and an input end of the condenser is connected to an output end of the vacuum pump through a delivery pipe.

[0015] In one possible design, a master control box is provided on the side wall of the L-shaped mounting frame.

[0016] It should be understood that the above general description and the following detailed description are merely illustrative and do not limit the present invention.

[0017] In this application, when in use, the power supply of the vacuum pump, condenser and other equipment is connected to the main control box to ensure that the power supply is stable and reliable, the concentrated acid solution raw material is added to the crystallization tank through the feed pipe, and the opening degree of the feed valve is controlled to control the feed speed and feed amount;

[0018] After the feeding is completed, the feed valve is closed, and the heating seat and the drive motor are turned on through the main control box. The heating seat heats and evaporates the raw materials. The drive motor causes the transmission rod to drive the rotating blade to rotate in the crystallization tank to stir the concentrated acid solution and improve the evaporation efficiency. At the same time, the vacuum pump is turned on to extract the gas in the crystallization tank through the exhaust pipe, thereby lowering the boiling point of the concentrated acid solution and further accelerating the evaporation process. During the evaporation process, the steam extracted by the vacuum pump enters the condenser through the delivery pipe for condensation. The condensed liquid can be collected for recycling. As the evaporation proceeds, the concentrated acid solution gradually concentrates and crystallizes. At this time, the crushing teeth and tooth grooves on the rotating blades will continuously crush the condensed crystal blocks to prevent them from being too large and difficult to discharge.

[0019] The utility model has the following beneficial effects:

[0020] The utility model makes the concentrated acid solution evenly distributed in the crystallization tank through the stirring action of the stirring component, avoids the phenomenon of local overheating or overcooling, thereby improving the evaporation efficiency. The setting of the crushing component enables the condensed crystal blocks to be continuously crushed during the crystallization process to prevent them from being too large to be discharged, thereby ensuring the continuity and stability of production.

[0021] The use of the vacuum pump in the utility model lowers the boiling point of the concentrated acid solution, reduces the heat required for evaporation, and thus reduces energy consumption. The condenser can condense the evaporated steam into liquid for recycling, thereby reducing environmental pollution and waste of resources.

[0022] The utility model can realize the rapid evaporation of concentrated acid solution and the crushing and discharge of crystals, thereby improving production efficiency. At the same time, the vacuum and condensation systems can reduce energy consumption and recycle steam. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A schematic diagram of the three-dimensional structure of a separation structure of a concentrated acid crystallization device provided in an embodiment of the present utility model;

[0024] Figure 2 A schematic structural diagram from another perspective of a separation structure of a concentrated acid crystallization device provided by an embodiment of the present utility model;

[0025] Figure 3 A schematic diagram of the internal structure of a crystallization tank of a separation structure of a concentrated acid crystallization device provided by an embodiment of the utility model;

[0026] Figure 4 This is a schematic diagram of the connection structure of the stirring component and the crushing component of the separation structure of the concentrated acid crystallization equipment provided by an embodiment of the present utility model.

[0027] Figure numerals: 1, crystallization tank; 2, sealing cover; 3, buckle; 4, heating seat; 5, feed pipe; 6, feed valve; 7, discharge pipe; 8, discharge valve; 9, transmission rod; 10, drive motor; 11, rotating blade; 12, crushing tooth; 13, tooth groove; 14, L-shaped mounting bracket; 15, vacuum pump; 16, exhaust pipe; 17, condenser; 18, delivery pipe; 19, main control box. DETAILED DESCRIPTION

[0028] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0029] In the description of the present invention, it should be understood that the terms "opening", "upper", "middle", "length", "inner" and the like indicating orientation or positional relationship are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0030] In order to keep the following description of the embodiments of the present invention clear and concise, the present invention omits detailed descriptions of known functions and known components.

[0031] Example 1

[0032] Please refer to Figure 1-4 , a separation structure comprising:

[0033] A crystallizer 1 is provided with a sealing cover 2 at the mouth of the top of the crystallizer 1. The sealing cover 2 is fixed to the crystallizer 1 by a plurality of buckles 3, which are convenient for cleaning the inside of the crystallizer 1. A heating seat 4 is provided at the bottom of the crystallizer 1 for providing a heat source for the concentrated acid solution. A feed pipe 5 is connected to the top of the sealing cover 2 for adding a concentrated acid solution raw material to the crystallizer 1. A feed valve 6 is provided on the feed pipe 5 for controlling the entry of the concentrated acid solution. A discharge pipe 7 is centrally connected to the bottom of the crystallizer 1. The discharge pipe 7 runs through the outer wall of the heating seat 4 and is provided with a discharge valve 8 for controlling the discharge of the crystallized product.

[0034] The stirring assembly includes a transmission rod 9 installed in the center of the bottom of the sealing cover 2. The transmission rod 9 is driven to rotate by a drive motor 10 on the top of the sealing cover 2. A plurality of rotating blades 11 are symmetrically fixed on the transmission rod 9 to stir the concentrated acid solution in the crystallization tank 1 to improve the evaporation efficiency.

[0035] The crushing assembly includes a row of crushing teeth 12 fixedly arranged at the end of the rotating blade 11. The top and bottom of the rotating blade 11 are provided with a plurality of tooth grooves 13. When the rotating blade 11 rotates, these crushing teeth 12 and tooth grooves 13 can effectively crush the crystals after evaporation and concentration, and prevent them from condensing into agglomerates, which makes them difficult to discharge.

[0036] An L-shaped mounting bracket 14 is provided outside the crystallizer 1. A vacuum pump 15, model Edwards RV12, is installed at the bottom of the inner wall of the mounting bracket 14. The input end of the vacuum pump 15 is connected to the inner wall of the sealing cover 2 through an exhaust pipe 16 to reduce the pressure inside the crystallizer 1, thereby lowering the boiling point of the concentrated acid solution and accelerating the evaporation rate.

[0037] A condenser 17, model Alfa Laval M3, is also installed on the side wall of the mounting frame 14. The input end of the condenser 17 is connected to the output end of the vacuum pump 15 through a delivery pipe 18. The steam extracted by the vacuum pump 15 enters the condenser 17 through the delivery pipe 18, and after condensation, it forms a liquid that can be recycled.

[0038] This application can be used for concentrated acid crystallization separation, and can also be used in other fields applicable to this application.

[0039] Example 2

[0040] Improvements based on Example 1:

[0041] A separation structure of concentrated acid crystallization equipment, which is used in the field of concentrated acid crystallization separation;

[0042] Please refer to Figure 1-2 A main control box 19 is provided on the side wall of the mounting frame 14. The main control box 19 integrates relevant components of the control system and is used to control the start and stop and operating parameters of equipment such as the drive motor 10 and the vacuum pump 15. The main control box 19 is also provided with a display screen and operation buttons to facilitate user operation and monitoring.

[0043] However, as is well known to those skilled in the art, the working principles and wiring methods of the heating seat 4, drive motor 10, vacuum pump 15 and condenser 17 are commonplace, and are conventional means or common knowledge, so they will not be elaborated here. Those skilled in the art can make any selections according to their needs or convenience.

[0044] The above are only specific embodiments of the present invention, but the scope of protection of the present invention is not limited to them. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this utility model should be included in the scope of protection of the present utility model. The embodiments of the present utility model and the features of the embodiments can be combined with each other unless there is a conflict. Therefore, the scope of protection of the present utility model shall be based on the scope of protection of the claims.

Claims

1. A separation structure of a concentrated acid crystallization device, characterized in that: include: A crystallizer (1), wherein a sealing cover (2) is provided at the top of the crystallizer (1), the top of the sealing cover (2) is connected to a feed pipe (5) for receiving a concentrated acid solution raw material, the feed pipe (5) is provided with a feed valve (6), the bottom of the crystallizer (1) is provided with a heating seat (4), the center of the bottom of the crystallizer (1) is connected to a discharge pipe (7), the discharge pipe (7) is provided to penetrate the outer wall of the heating seat (4), and the discharge pipe (7) is provided with a discharge valve (8); A stirring assembly is provided in the crystallization tank (1) and is used to improve the evaporation efficiency of the concentrated acid solution. The stirring assembly comprises a transmission rod (9) rotatably mounted at the center of the bottom of the sealing cover (2). A driving motor (10) for driving the transmission rod (9) to rotate is fixedly mounted at the center of the top of the sealing cover (2). The transmission rod (9) is symmetrically fixed with a plurality of rotating blades (11). A crushing assembly is provided on the stirring assembly to prevent crystals after evaporation and concentration from condensing into blocks, which makes it difficult to discharge. The crushing assembly includes a row of crushing teeth (12) fixedly provided at the end of a rotating blade (11). The top and bottom of the rotating blade (11) are both provided with a plurality of tooth grooves (13) at equal distances for improving the crushing effect.

2. The separation structure of a concentrated acid crystallization device according to claim 1, characterized in that: The sealing cover (2) is fixed to the crystallization tank (1) via a plurality of buckles (3) so as to facilitate cleaning of the interior of the crystallization tank (1).

3. The separation structure of a concentrated acid crystallization device according to claim 1, characterized in that: An L-shaped mounting frame (14) is provided outside the crystallization tank (1), and a vacuum pump (15) for reducing the boiling point of the concentrated acid solution is fixedly installed at the bottom of the inner wall of the L-shaped mounting frame (14), and the input end of the vacuum pump (15) is connected to the inner wall of the sealing cover (2) through an exhaust pipe (16).

4. The separation structure of a concentrated acid crystallization device according to claim 3, characterized in that: A condenser (17) for condensing steam is fixedly mounted on the side wall of the L-shaped mounting frame (14), and the input end of the condenser (17) is connected to the output end of the vacuum pump (15) via a delivery pipe (18).

5. The separation structure of a concentrated acid crystallization device according to claim 4, characterized in that: A main control box (19) is provided on the side wall of the L-shaped mounting frame (14).

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