Crystallization device for calcium formate production

Abstract

The utility model discloses a crystallization device for calcium formate production, which comprises a reaction kettle and a second reaction kettle, the reaction kettle is used for neutralization reaction of a solution, and the bottom in the reaction kettle is funnel-shaped, so that the reaction solution can be discharged more conveniently; a first servo motor drives a stirring rod to rotate so that a stirring plate and an auxiliary stirring plate can fully mix a solution in the reaction kettle, a second reaction kettle performs evaporative crystallization, a second servo motor drives a rotating rod to rotate so as to drive a spiral blade to rotate, and liquid at the bottom of the second reaction kettle is brought to the top of the second reaction kettle. The air valve is used for introducing high-temperature and high-pressure dry steam into the reaction kettle through the hollow rotating rod, so that the temperature of the liquid is increased, and the liquid is evaporated, concentrated and crystallized. Concentration crystallization and neutralization reaction in the preparation process are separated through the second reaction kettle and the second reaction kettle, the crystallization rate of calcium formate is more uniform through the second reaction kettle, and the service life of the device is prolonged.

Description

Technical Field

[0001] This utility model belongs to the field of calcium formate production technology, and in particular relates to a crystallization device for calcium formate production. Background Technology

[0002] In actual production, calcium formate typically involves a neutralization reaction between formic acid and calcium hydroxide or calcium carbonate. The resulting filtrate is then evaporated and concentrated, causing calcium formate to crystallize. The crystallized calcium formate is then centrifuged and dried to obtain the final product. This neutralization reaction method for preparing calcium formate is simple, convenient, and suitable for large-scale industrial production. However, in practice, traditional equipment often uses heating elements attached to the outer wall of the crystallization chamber or heating rods inside the chamber to heat the solution. This leads to uneven heating and easy adhesion of the solution, reducing the crystallization rate and shortening the lifespan of the equipment. To address these issues, we propose a crystallization apparatus for calcium formate production. Utility Model Content

[0003] The purpose of this invention is to provide a crystallization apparatus for the production of calcium formate, thereby solving the existing problems.

[0004] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0005] This utility model relates to a crystallization apparatus for the production of calcium formate, comprising a reaction vessel. A servo motor is fixedly connected to the upper surface of the reaction vessel. The lower end of the reaction vessel is funnel-shaped. A stirring rod is fixedly connected to the output end of the servo motor through the reaction vessel. Several stirring plates are fixedly connected to the upper surface of the stirring rod. The shape and size of the stirring plates are adapted to the upper surface of the inner wall of the reaction vessel, and the stirring plates and the upper surface of the inner wall of the reaction vessel are in sliding fit. An auxiliary stirring plate is fixedly connected to the lower surface of the stirring rod. The shape and size of the auxiliary stirring plate are adapted to the lower surface of the inner wall of the reaction vessel, and the auxiliary stirring plate and the lower surface of the inner wall of the reaction vessel are in rotatable fit. A feed valve is provided on the upper surface of the reaction vessel, and a discharge valve is fixedly connected to the discharge port at the lower end of the reaction vessel. The discharge valve... A conduit is fixedly connected to the outlet end, and a second reactor is fixedly connected to the free end of the conduit. A vent box is fixedly connected to the upper surface of the second reactor, and an air valve is fixedly connected to the left end of the vent box. A second servo motor is installed on the upper surface of the vent box, and a rotating rod is fixedly connected to the output end of the second servo motor. The rotating rod extends through the vent box and the upper surface of the second reactor into the interior of the reactor body. The rotating rod is a hollow rod, and several air inlets are opened on the circumferential side of the rotating rod inside the vent box. Several spiral blades are fixedly connected to the circumferential side of the rotating rod inside the second reactor. A vent plate is fixedly connected to the inner wall of the rotating rod. A second discharge valve is fixedly connected to the discharge port at the lower end of the second reactor. A pressure relief valve is fixedly connected to the upper surface of the second reactor, and a notch is opened at the lower end of the rotating rod.

[0006] Furthermore, the reactor, stirring rod, stirring plate, auxiliary stirring plate, rotating rod, and spiral blades are all made of copper. Several support legs are fixedly connected to the lower end face of the reactor, and several anti-slip pads are fixedly connected to the lower end face of the support legs. The free end of the rotating rod inside the second reactor extends to the bottom of the inner wall of the second reactor and fits tightly against its bottom. The inner wall of the second reactor, the rotating rod, and the spiral blades are all coated with QUANTANIUM water-based non-stick coating.

[0007] This utility model has the following beneficial effects:

[0008] This invention separates the neutralization reaction from the concentration and crystallization process in the preparation process by setting up a reaction vessel and a second reaction vessel. This allows the device to still carry out the preparation and neutralization reaction during crystallization and drying. The funnel-shaped bottom of the reaction vessel facilitates the discharge of the reaction solution. The first servo motor drives the stirring rod to rotate, which allows the stirring plate and the auxiliary stirring plate to fully mix the solution in the vessel.

[0009] This invention utilizes a second reactor for crystallization. A second servo motor drives a rotating rod, which in turn rotates a spiral blade, carrying the liquid from the bottom to the top of the second reactor. This creates a bottom-to-top liquid circulation, increasing the crystallization rate of calcium formate within the device. High-temperature, high-pressure dry steam is introduced into the reactor through a valve via the hollow rotating rod, raising the liquid temperature and causing evaporation and concentration, leading to the crystallization of calcium formate until it dries. The high-pressure environment further increases the crystallization rate. The rotating rod and spiral blades are made of copper for better heat conduction, improving the uniformity of heating of the solution within the device and resulting in a more uniform calcium formate crystallization rate, thus extending the device's lifespan. The inner wall of the second reactor, the rotating rod, and the spiral blades are all coated with a QUANTANIUM water-based non-stick coating, preventing calcium formate from adhering to the surface and facilitating its discharge.

[0010] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0011] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0012] Figure 1 A schematic diagram of the overall structure of a crystallization device for the production of calcium formate.

[0013] Figure 2 A top view of a crystallization apparatus for the production of calcium formate;

[0014] Figure 3 for Figure 2 Sectional view of AA in the middle;

[0015] Figure 4 This is a front view of a crystallization apparatus for the production of calcium formate.

[0016] The components represented by each number in the attached diagram are listed below: 1. Reactor; 2. Servo motor No. 1; 3. Stirring rod; 4. Stirring plate; 5. Auxiliary stirring plate; 6. Pressure relief valve; 7. Feed valve; 8. Discharge valve; 9. Conduit; 10. Reactor No. 2; 11. Vent box; 12. Gas valve; 13. Servo motor No. 2; 14. Rotating rod; 15. Spiral blade; 16. Vent plate; 17. Discharge valve No. 2; 18. Notch. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. 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.

[0018] In the description of this utility model, it should be understood that the terms "upper", "middle", "outer", "inner", etc., which indicate orientation or positional relationship, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0019] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within 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.

[0020] Please see Figures 1-4As shown, a crystallization apparatus for calcium formate production in this embodiment includes a reactor 1. A servo motor 2 is fixedly connected to the upper surface of the reactor 1. The lower end of the reactor 1 is funnel-shaped. A stirring rod 3 is fixedly connected to the output end of the servo motor 2 through the reactor 1. Several stirring plates 4 are fixedly connected to the upper side of the stirring rod 3. The shape and size of the stirring plates 4 are adapted to the upper end of the inner wall of the reactor 1. The stirring plates 4 and the upper end of the inner wall of the reactor 1 are in sliding fit. An auxiliary stirring plate 5 is fixedly connected to the lower side of the stirring rod 3. The shape and size of the auxiliary stirring plate 5 are adapted to the lower end of the inner wall of the reactor 1. The auxiliary stirring plate 5 and the lower end of the inner wall of the reactor 1 are in rotatable fit. A feed valve 7 is opened on the upper surface of the reactor 1. A discharge valve 8 is fixedly connected to the discharge port at the lower end of the reactor 1. A conduit 9 is fixedly connected to the output end of the discharge valve 8. 9. A second reactor 10 is fixedly connected to the free end of the reactor. A vent box 11 is fixedly connected to the upper surface of the second reactor 10. A gas valve 12 is fixedly connected to the left end of the vent box 11. A second servo motor 13 is installed on the upper surface of the vent box 11. A rotating rod 14 is fixedly connected to the output end of the second servo motor 13. The rotating rod 14 passes through the vent box 11 and the upper surface of the second reactor 10 and extends into the reactor body. The rotating rod 14 is a hollow rod. Several air inlets are opened on the circumference of the rotating rod 14 inside the vent box 11. Several spiral blades 15 are fixedly connected to the circumference of the rotating rod 14 inside the second reactor 10. A vent plate 16 is fixedly connected to the inner wall of the rotating rod 14. A second discharge valve 17 is fixedly connected to the discharge port at the lower end of the second reactor 10. A pressure relief valve 6 is fixedly connected to the upper surface of the second reactor 10. A notch 18 is opened at the lower end of the rotating rod 14.

[0021] In one embodiment, the reactor 1, stirring rod 3, stirring plate 4, auxiliary stirring plate 5, rotating rod 14, and spiral blade 15 are all made of copper. Several support legs are fixedly connected to the lower end face of the reactor 1, and several anti-slip pads are fixedly connected to the lower end face of the support legs. The free end of the rotating rod 14 in the second reactor 10 extends to the inner wall of the second reactor 10 and fits tightly against its bottom. The inner wall of the second reactor 10, the rotating rod 14, and the spiral blade 15 are all coated with QUANTANIUM water-based non-stick coating.

[0022] Please see Figures 1-4As shown, this utility model is an instruction manual for a crystallization device for calcium formate production: First, open the feed valve 7 and inject a certain amount of reactant material into the reactor 1 through the feed port 6. Turn on the first servo motor 2 to drive the stirring rod 3 to rotate, so that the stirring rod 4 and the auxiliary stirring plate 5 can be fully integrated and stirred. Then, open the discharge valve 8, and the solution will flow into the second reactor 10 through the conduit 9. Open the gas valve 12 and use the hollow rotating rod 14 to introduce high temperature and high pressure dry steam into the second reactor 10. At this time, the dry steam will raise the temperature of the solution. Then, turn on the second servo motor 13 to drive the rotating rod 14 to rotate. The spiral blade 15 will carry the liquid at the bottom 10 of the second reactor to the top of the second reactor 10, so that the liquid in the second reactor 10 can achieve liquid circulation between the bottom and the top. At the same time, the rotating rod 14 and the spiral blade (15) are both made of copper, which can better conduct heat, so that the solution is heated more evenly and the calcium formate crystallization rate is more stable. After the drying and crystallization is completed, open the second discharge valve 17 to discharge the material.

[0023] It should be noted that when the No. 2 reactor 10 is working, the pressure relief valve 6 needs to be opened periodically to reduce the internal pressure of the No. 2 reactor 10. QUANTANIUM water-based non-stick coating is an existing technology and is a high-performance coating material. The No. 2 reactor 10 has observation windows on its sides, which can be used to observe the state inside the reactor during drying and crystallization. When discharging, the bottom of the spiral blade 15 will act as a scraper to allow the calcium formate at the bottom of the No. 2 reactor 10 to be discharged better.

[0024] In the description of this specification, references to terms such as "an embodiment," "example," and "specific example" indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0025] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A crystallization apparatus for calcium formate production comprising a reactor (1), characterized in that: A servo motor (2) is fixedly connected to the upper end of the reactor (1). The lower end of the reactor (1) is funnel-shaped. A stirring rod (3) is fixedly connected to the output end of the servo motor (2) through the reactor (1). Several stirring plates (4) are fixedly connected to the upper end of the periphery of the stirring rod (3). An auxiliary stirring plate (5) is fixedly connected to the lower end of the periphery of the stirring rod (3). A feed valve (7) is opened on the upper end of the reactor (1). A discharge valve (8) is fixedly connected to the discharge port at the lower end of the reactor (1). A conduit (9) is fixedly connected to the output end of the discharge valve (8). A second reactor (10) is fixedly connected to the free end of the conduit (9). A vent box (11) is fixedly connected to the upper end of the second reactor (10). A gas valve (12) is fixedly connected to the left end of the vent box (11). A second servo motor (13) is installed on the upper surface of the ventilation box (11). A rotating rod (14) is fixedly connected to the output end of the second servo motor (13). The rotating rod (14) extends through the ventilation box (11) and the upper surface of the second reactor (10) into the reactor body. The rotating rod (14) is a hollow rod. Several air inlets are opened on the circumferential side of the rotating rod (14) in the ventilation box (11). Several spiral blades (15) are fixedly connected on the circumferential side of the rotating rod (14) in the second reactor (10). A ventilation plate (16) is fixedly connected to the inner wall of the rotating rod (14). A second discharge valve (17) is fixedly connected to the discharge port at the lower end of the second reactor (10). A pressure relief valve (6) is fixedly connected to the upper surface of the second reactor (10). A notch (18) is opened at the lower end of the rotating rod (14).

2. The crystallization apparatus for producing calcium formate according to claim 1, characterized by The reactor (1), stirring rod (3), stirring plate (4), auxiliary stirring plate (5), rotating rod (14) and spiral blade (15) are all made of copper.

3. The crystallization apparatus for producing calcium formate according to claim 1, characterized by The shape and size of the stirring plate (4) are adapted to the upper end of the inner wall of the reactor (1), and the stirring plate (4) and the upper end of the inner wall of the reactor (1) are in sliding fit.

4. The crystallization apparatus for producing calcium formate according to claim 1, characterized by The shape and size of the auxiliary stirring plate (5) are adapted to the lower end of the inner wall of the reactor (1), and the auxiliary stirring plate (5) and the lower end of the inner wall of the reactor (1) are rotatably matched.

5. The crystallization apparatus for producing calcium formate according to claim 1, characterized by The lower end face of the reactor (1) is fixedly connected to several support legs, and the lower end face of the support legs is fixedly connected to several anti-slip pads.

6. The crystallization apparatus for producing calcium formate according to claim 1, characterized by The free end of the rotating rod (14) inside the No. 2 reactor (10) extends to the bottom of the inner wall of the No. 2 reactor (10) and fits tightly against the bottom of the inner wall of the No. 2 reactor (10). The inner wall of the No. 2 reactor (10), the rotating rod (14) and the spiral blade (15) are all coated with QUANTANIUM water-based non-stick coating.

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