Efficient electromagnetic induction cyclic heating chemical reaction kettle

Abstract

The utility model discloses an efficient electromagnetic induction cyclic heating chemical reaction kettle, which comprises a cylindrical kettle body and a metal jacket sleeved outside the cylindrical kettle body, an electromagnetic heating ring is arranged in the metal jacket, and the electromagnetic heating ring is spirally arranged in the metal jacket from bottom to top. The electromagnetic heating ring is spirally connected to the circular outer wall of the cylindrical kettle body in a sleeving mode, a stirring shaft is arranged in the center of the cylindrical kettle body, the two uniform heat conduction devices are additionally arranged on the inner wall of the cylindrical kettle body of the efficient electromagnetic induction cyclic heating chemical reaction kettle, and the two uniform heat conduction devices and the multiple sets of stirring rollers are arranged in an up-down staggered mode; when the electromagnetic heating ring performs electromagnetic heating on reactants in the cylindrical kettle body, the annular metal fixing sheet and the plurality of strip-shaped metal heat-conducting sheets on the uniform heat-conducting device can quickly and uniformly diffuse heat into the reactants, so that the situation that the local heating temperature of the reactants is too high or too low is avoided.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of reaction kettle, specifically relates to a kind of efficient electromagnetic induction circulating heating chemical reaction kettle. BACKGROUND

[0002] In the field of chemical production, reaction kettle is a commonly used equipment, for carrying out various chemical reactions.The traditional chemical reaction kettle usually uses steam heating, resistance heating and the like, but these heating modes have some problems.For example, steam heating needs to consume a large amount of energy, and the heating speed is slow;Resistance heating is prone to local overheating, affecting the stability of the reaction and the quality of the product;

[0003] With the continuous progress of science and technology, electromagnetic induction heating technology is gradually applied to chemical reaction kettle.Electromagnetic induction heating has the advantages of fast heating speed, high efficiency, energy saving and environmental protection.However, the current electromagnetic induction heating chemical reaction kettle still has some shortcomings.Because electromagnetic induction heating is heat transfer from outside to inside, it is easy to cause the heat at the center of the reactor internal reactant to be lower than the heat on the outside, resulting in uneven heat distribution.This uneven heat distribution will affect the reaction rate and product quality, and may even cause safety accidents;

[0004] To solve this problem, the present application provides an efficient electromagnetic induction circulating heating chemical reaction kettle, by setting up uniform heat conduction device and special stirring structure, effectively improve the uniformity of heat distribution in the kettle body, so as to improve the reaction efficiency and product quality. CONTENT OF THE UTILITY MODEL

[0005] The utility model aims at providing a kind of efficient electromagnetic induction circulating heating chemical reaction kettle, to solve the problem that the above background technology proposes due to electromagnetic induction heating is heat transfer from outside to inside, it is easy to cause the heat at the center of the reactor internal reactant to be lower than the heat on the outside, resulting in uneven heat distribution, this uneven heat distribution will affect the reaction rate and product quality, and may even cause safety accidents.

[0006] To achieve the above object, the utility model provides the following technical scheme: An efficient electromagnetic induction circulating heating chemical reaction kettle, including the cylindrical kettle body and the metal jacket of sleeve joint in the cylindrical kettle body round outside, the inside of metal jacket is provided with electromagnetic heating ring, electromagnetic heating ring is arranged from below and above in the inside of metal jacket, the electromagnetic heating ring is helically sleeved on the cylindrical kettle body round outer wall, the inside of the cylindrical kettle body center is provided with the stirring shaft, the stirring shaft is vertically arranged in the inside of the cylindrical kettle body, the outside of the stirring shaft center place downside is equidistant and is provided with a plurality of metal fixed cover, the both ends outer wall of metal fixed cover is all welded with stirring roller, the inside of the cylindrical kettle body center downside inner wall is provided with two symmetrical heat conduction devices, the heat conduction device is located between two stirring rollers of up and down adjacent.

[0007] Preferably, the uniform heat conduction device includes a strip-shaped metal heat conduction sheet, an annular metal fixing sheet, a stirring turbulence small hole, and a stirring turbulence large hole. The annular metal fixing sheet is arranged at the lower side of the inner center of the cylindrical kettle body. The outer wall of the annular metal fixing sheet is attached to the inner wall of the cylindrical kettle body, and the annular metal fixing sheet is fixedly connected with the cylindrical kettle body by welding. A plurality of strip-shaped metal heat conduction sheets are equidistantly arranged on the annular inner wall of the annular metal fixing sheet. A plurality of stirring turbulence small holes and stirring turbulence large holes are equidistantly arranged in the inside of each strip-shaped metal heat conduction sheet.

[0008] Preferably, when the stirring shaft drives the stirring roller to rotate, the plurality of strip-shaped metal heat conduction sheets do not contact the stirring shaft and the stirring roller. The strip-shaped metal heat conduction sheets are located between two stirring rollers of up and down adjacent.

[0009] Preferably, a discharge valve is arranged at the center of the bottom end of the cylindrical kettle body. The discharge valve is in communication with the inside of the cylindrical kettle body. The upper and lower ends of the metal jacket are fixedly connected with the cylindrical kettle body by welding.

[0010] Preferably, the top end of the cylindrical kettle body is provided with an opening. A kettle end cover is arranged at the top end of the cylindrical kettle body. A sealing butt flange is arranged at the outside of the top end of the cylindrical kettle body and the bottom end outside of the kettle end cover. The two sealing butt flanges are fixedly connected by a plurality of screws.

[0011] Preferably, a speed reducer is arranged at the top center of the kettle end cover. A stirring motor is drivingly connected to the top end of the speed reducer. The stirring motor is electrically connected with an external control power source through an electric wire.

[0012] Preferably, an output shaft is arranged at the bottom end of the speed reducer. The bottom end of the output shaft is located at the lower side of the inner wall of the top end of the kettle end cover. The output shaft is fixedly connected with the top end of the stirring shaft through a shaft coupling. The output shaft can drive the stirring shaft to rotate at a constant speed through the shaft coupling.

[0013] Preferably, an observation port is arranged at the left side of the top center of the kettle body end cover, and a feeding port is arranged at the right side of the top center of the kettle body end cover, and the observation port and the feeding port are both sleeved with a sealing end cover outside the opening.

[0014] Compared with the prior art, the high-efficiency electromagnetic induction circulating heating chemical reaction kettle has the following beneficial effects:

[0015] The two uniform heat conduction devices and the multiple stirring rollers are arranged in an up-down staggered manner, when the electromagnetic heating ring performs electromagnetic heating on the reaction substance in the cylindrical kettle body, the annular metal fixing plate and the multiple strip-shaped metal heat conduction plates on the uniform heat conduction device can quickly and uniformly diffuse heat into the reaction substance, so that the situation that the local heating temperature of the reaction substance is too high or too low is avoided, and the stirring disturbance small holes and the stirring disturbance large holes arranged at equal intervals in the strip-shaped metal heat conduction plate can play a disturbance role on the reaction substance when the stirring shaft drives the stirring roller to rotate, so that the flow of the reaction substance in the cylindrical kettle body is more complex and sufficient, and the uniform distribution degree of heat in the reaction substance is further improved, and at the same time, since the uniform heat conduction device does not contact the stirring shaft and the stirring roller, the stirring process is not hindered, so that the efficiency and stability of the stirring are ensured, in addition, the multiple strip-shaped metal heat conduction plates increase the contact area with the reaction substance, so that heat can be quickly absorbed and transmitted, the heating efficiency is greatly improved, the reaction time is shortened, and the working efficiency and performance of the entire chemical reaction kettle are improved. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is an internal three-dimensional structure schematic view of the high-efficiency electromagnetic induction circulating heating chemical reaction kettle.

[0017] Figure 2 It is an external three-dimensional structure schematic view of the high-efficiency electromagnetic induction circulating heating chemical reaction kettle.

[0018] Figure 3 It is an external plane structure schematic view of the high-efficiency electromagnetic induction circulating heating chemical reaction kettle.

[0019] Figure 4 It is a three-dimensional structure schematic view of the uniform heat conduction device.

[0020] In the figure: 1, discharge valve; 2, cylindrical kettle body; 3, metal jacket; 4, electromagnetic heating coil; 5, stirring roller; 6, stirring shaft; 7, metal fixing sleeve; 8, uniform heat conduction device; 9, sealing butt flange; 10, observation port; 11, speed reducer; 12, stirring motor; 13, charging port; 14, kettle body end cover; 15, strip-shaped metal heat conduction sheet; 16, annular metal fixing sheet; 17, stirring turbulence small hole; 18, stirring turbulence large hole. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0022] The present application provides a kind of Figures 1-4The illustrated high-efficiency electromagnetic induction circulating heating chemical reaction kettle comprises a cylindrical kettle body 2, a metal jacket 3 sleeved on the circular outer part of the cylindrical kettle body 2, an electromagnetic heating ring 4 arranged inside the metal jacket 3, the electromagnetic heating ring 4 being arranged in a spiral from bottom to top inside the metal jacket 3, the electromagnetic heating ring 4 being spirally sleeved on the circular outer wall of the cylindrical kettle body 2, the electromagnetic heating ring 4 generating an eddy current on the metal wall of the cylindrical kettle body 2 by generating an alternating magnetic field, so that the cylindrical kettle body 2 generates heat, the electromagnetic heating ring 4 arranged in a spiral from bottom to top inside the metal jacket 3 can heat the cylindrical kettle body 2 in all directions, improving the heating efficiency and uniformity, a stirring shaft 6 being arranged inside the center of the cylindrical kettle body 2, the stirring shaft 6 being arranged vertically inside the cylindrical kettle body 2, a plurality of metal fixing sleeves 7 being equidistantly arranged outside the lower center of the stirring shaft 6, stirring rollers 5 being welded to the outer walls of the left and right ends of the metal fixing sleeves 7, a discharge valve 1 being arranged at the center of the bottom end of the cylindrical kettle body 2, the discharge valve 1 being in communication with the inside of the cylindrical kettle body 2, the metal jacket 3 being fixedly connected with the cylindrical kettle body 2 by welding at the upper and lower ends, the top end of the cylindrical kettle body 2 being provided with an opening, the top end of the cylindrical kettle body 2 being provided with a kettle end cover 14, sealing butt flanges 9 being arranged outside the top end of the cylindrical kettle body 2 and outside the bottom end of the kettle end cover 14, the two sealing butt flanges 9 being fixedly connected by a plurality of screws, a speed reducer 11 being arranged at the center of the top end of the kettle end cover 14, the top end of the speed reducer 11 being drivingly connected with a stirring motor 12, the stirring motor 12 being electrically connected with an external control power supply by wires, an output shaft being arranged at the bottom end of the speed reducer 11, the bottom end of the output shaft being located below the inner wall of the top end of the kettle end cover 14, the output shaft being fixedly connected with the top end of the stirring shaft 6 through a coupling, the output shaft being capable of driving the stirring shaft 6 to rotate at a constant speed through the coupling, the stirring motor 12 driving the stirring shaft 6 to rotate through the speed reducer 11 and the output shaft, the stirring rollers 5 on the stirring shaft 6 stirring the materials, the stirring enabling the materials to be fully mixed and improving the reaction rate, and at the same time, helping the heat to be uniformly distributed in the materials.

[0023] As Figure 1 , Figure 2 and Figure 3As shown, the left side of the top center of the kettle end cover 14 is provided with an observation port 10, and the right side of the top center of the kettle end cover 14 is provided with a feeding port 13. The outer part of the opening of the observation port 10 and the feeding port 13 is sleeved with a sealing end cover. When using the high-efficiency electromagnetic induction circulating heating chemical reaction kettle, first, the sealing end cover of the feeding port 13 on the kettle end cover 14 is opened, the material to be reacted is added to the inside of the cylindrical kettle body 2 through the feeding port 13, and the electromagnetic heating ring 4 is connected with the external control power supply, then the electromagnetic heating ring 4 is started, the electromagnetic heating ring 4 is spirally arranged inside the metal jacket 3 from bottom to top, and the cylindrical kettle body 2 is heated. The spiral arrangement of the electromagnetic heating ring 4 can make the heating more uniform and improve the heating efficiency. When the reaction material needs to be stirred, the stirring motor 12 needs to be started. The stirring motor 12 drives the output shaft to rotate through the speed reducer 11, and the output shaft is connected with the stirring shaft 6 through the shaft coupling, so as to drive the stirring shaft 6 to rotate vertically in the cylindrical kettle body 2. The metal fixing sleeve 7 on the stirring shaft 6 and the stirring roller 5 welded on the outer wall of the left and right ends of the metal fixing sleeve 7 rotate with the stirring shaft 6, and the material in the cylindrical kettle body 2 is stirred to make the material fully mixed and improve the reaction rate. Under the action of heating and stirring, the material in the cylindrical kettle body 2 is chemically reacted, and the reaction process in the cylindrical kettle body 2 needs to be observed through the observation port 10 on the kettle end cover 14 during the reaction process, so as to adjust the reaction conditions in time. When the reaction is completed, the discharge valve 1 at the bottom center of the cylindrical kettle body 2 is opened, and the reaction product is discharged.

[0024] As Figure 1 and Figure 4As shown, two uniform heat conduction devices 8 are symmetrically arranged on the inner wall of the lower center of the cylindrical kettle body 2, and the uniform heat conduction devices 8 are located between the two adjacent stirring rollers 5. The uniform heat conduction device 8 includes a strip-shaped metal heat conduction sheet 15, an annular metal fixing sheet 16, stirring flow disturbance small holes 17 and stirring flow disturbance large holes 18. The annular metal fixing sheet 16 is arranged at the lower center of the inner part of the cylindrical kettle body 2, the outer wall of the annular metal fixing sheet 16 is attached to the inner wall of the cylindrical kettle body 2, and the annular metal fixing sheet 16 is fixedly connected with the cylindrical kettle body 2 by welding. The annular metal fixing sheet 16 serves as a bridge connecting the inner wall of the cylindrical kettle body 2 and the strip-shaped metal heat conduction sheet 15, and makes full use of the excellent heat conduction performance of metal. After the electromagnetic heating coil 4 on the outer wall of the cylindrical kettle body 2 generates heat, the heat is first transferred to the cylindrical kettle body 2. Since the annular metal fixing sheet 16 is closely attached to the inner wall of the cylindrical kettle body 2 and is fixedly connected with the cylindrical kettle body 2 by welding, the heat can be quickly conducted from the cylindrical kettle body 2 to the annular metal fixing sheet 16. The annular inner wall of the annular metal fixing sheet 16 is equally provided with a plurality of strip-shaped metal heat conduction sheets 15. The annular metal fixing sheet 16 uniformly transfers the received heat to the plurality of strip-shaped metal heat conduction sheets 15 equally distributed on the annular inner wall thereof. The strip-shaped metal heat conduction sheet 15, on the one hand, increases the contact area with the reactants, so that more heat can be directly transferred to the reactants. On the other hand, the strip-shaped metal heat conduction sheet 15 made of metal has high heat conduction performance, can quickly conduct heat inside it, and further diffuse into the surrounding reactants, thereby achieving uniform heating of the reactants. The inside of each strip-shaped metal heat conduction sheet 15 is equally provided with a plurality of stirring flow disturbance small holes 17 and stirring flow disturbance large holes 18. The stirring flow disturbance small holes 17 and stirring flow disturbance large holes 18 equally arranged inside the strip-shaped metal heat conduction sheet 15 have an important flow disturbance effect during stirring. When the reactants flow under the action of stirring, the flow speed of the reactants will increase and form local turbulence when passing through the stirring flow disturbance small holes 17 due to the small hole diameter. This turbulence can enhance the heat transfer efficiency in the reactants, so that the heat can be more quickly diffused into the entire reaction system. The stirring flow disturbance large holes 18 will cause a large change in the flow path of the reactants, so that the reactants produce stronger disturbance when flowing through the large holes, further increasing the mixing degree of the reactants and the uniformity of heat distribution. When the stirring shaft 6 drives the stirring roller 5 to rotate, the plurality of strip-shaped metal heat conduction sheets 15 do not contact the stirring shaft 6 and the stirring roller 5. The strip-shaped metal heat conduction sheet 15 is located between the two adjacent stirring rollers 5. When the stirring shaft 6 drives the stirring roller 5 to rotate, the strip-shaped metal heat conduction sheet 15 is located between the two adjacent stirring rollers 5 and does not contact the stirring shaft 6 and the stirring roller 5. Such a design not only ensures the smooth progress of stirring, but also enables the strip-shaped metal heat conduction sheet 15 to fully play its role.

[0025] Finally, it should be noted that: the above only for the preferred embodiments of the present application, and is not intended to limit the present application, although the foregoing embodiments of the present application has been described in detail, for the skilled in the art, it still can be modified, or for part of the technical features of the equivalent replacement, the spirit and principles of the present application, made any modification, equivalent replacement, improvement, etc., should be included within the scope of the present application.

Claims

1. A high-efficiency electromagnetic induction circulating heating chemical reactor, comprising a cylindrical reactor body (2) and a metal jacket (3) sleeved on the circular outer side of the cylindrical reactor body (2), wherein an electromagnetic heating coil (4) is disposed inside the metal jacket (3), the electromagnetic heating coil (4) being spirally arranged from bottom to top inside the metal jacket (3), and the electromagnetic heating coil (4) being spirally sleeved on the circular outer wall of the cylindrical reactor body (2), characterized in that: A stirring shaft (6) is provided inside the center of the cylindrical vessel (2). The stirring shaft (6) is vertically arranged inside the cylindrical vessel (2). Multiple metal fixing sleeves (7) are equidistantly arranged on the lower outer side of the center of the stirring shaft (6). Stirring rollers (5) are welded to the outer walls of both ends of the metal fixing sleeves (7). Two uniform heat conduction devices (8) are symmetrically arranged on the lower inner wall of the center of the cylindrical vessel (2). The uniform heat conduction devices (8) are located between two adjacent stirring rollers (5). The uniform heat conduction device (8) includes strip-shaped metal heat conduction plates (15), annular metal fixing plates (16), stirring and turbulence small holes (17) and stirring and turbulence large holes (18). The annular metal fixing plate (16) is located on the lower side of the center inside the cylindrical vessel body (2). The outer wall of the annular metal fixing plate (16) is attached to the inner wall of the cylindrical vessel body (2), and the annular metal fixing plate (16) and the cylindrical vessel body (2) are fixedly connected by welding. Multiple strip-shaped metal heat conduction plates (15) are equidistantly arranged on the annular inner wall of the annular metal fixing plate (16). Multiple stirring and turbulence small holes (17) and stirring and turbulence large holes (18) are equidistantly arranged inside the multiple strip-shaped metal heat conduction plates (15).

2. The high-efficiency electromagnetic induction circulating heating chemical reaction vessel according to claim 1, characterized in that: When the stirring shaft (6) drives the stirring roller (5) to rotate, the multiple strip-shaped metal heat-conducting plates (15) do not contact the stirring shaft (6) and the stirring roller (5), and the strip-shaped metal heat-conducting plates (15) are located between two adjacent stirring rollers (5).

3. The high-efficiency electromagnetic induction circulating heating chemical reaction vessel according to claim 1, characterized in that: A discharge valve (1) is provided at the center of the bottom end of the cylindrical vessel (2). The discharge valve (1) is connected to the inside of the cylindrical vessel (2). The upper and lower ends of the metal jacket (3) are fixedly connected to the cylindrical vessel (2) by welding.

4. The high-efficiency electromagnetic induction circulating heating chemical reaction vessel according to claim 1, characterized in that: The top of the cylindrical vessel (2) is open, and the top of the cylindrical vessel (2) is provided with a vessel end cap (14). Both the outer top of the cylindrical vessel (2) and the outer bottom of the vessel end cap (14) are provided with sealing flanges (9). The two sealing flanges (9) are fixedly connected by multiple screws.

5. The high-efficiency electromagnetic induction circulating heating chemical reaction vessel according to claim 4, characterized in that: A speed reducer (11) is provided at the center of the top of the end cap (14) of the vessel body. A stirring motor (12) is connected to the top of the speed reducer (11). The stirring motor (12) is electrically connected to an external control power supply through a wire.

6. The high-efficiency electromagnetic induction circulating heating chemical reaction vessel according to claim 5, characterized in that: The reducer (11) is provided with an output shaft at its bottom end. The bottom end of the output shaft is located on the lower side of the inner wall of the top end of the vessel end cover (14). The output shaft is fixedly connected to the top end of the stirring shaft (6) through a coupling. The output shaft can drive the stirring shaft (6) to rotate at a constant speed through the coupling.

7. The high-efficiency electromagnetic induction circulating heating chemical reaction vessel according to claim 6, characterized in that: An observation port (10) is provided on the left side of the top center of the end cap (14) of the vessel body, and a feeding port (13) is provided on the right side of the top center of the end cap (14) of the vessel body. Both the observation port (10) and the feeding port (13) are fitted with sealing end caps.

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