Reactor capable of being used efficiently

Abstract

The utility model relates to the technical field of continuous tank reactors, in particular to an efficient reactor. Comprising a reaction kettle and a driving mechanism comprising a stirring motor, a stirring mechanism connected with the driving mechanism is arranged in the reaction kettle, the stirring mechanism comprises a rotating rod, the rotating rod is of a double-layer nested structure comprising a liquid inlet inner pipe and an air inlet outer pipe, and a one-way vent valve is arranged on the side wall of the end, close to the top of the reaction kettle, of the air inlet outer pipe. The rotating rod upwards extends out of the reaction kettle and is connected with a feeding mechanism, the rotating rod downwards extends to the bottom of the kettle and is connected with a dispersing mechanism, and the dispersing mechanism comprises a liquid inlet channel communicated with the liquid inlet inner pipe, a gas inlet channel communicated with the gas inlet outer pipe and a spraying assembly for spraying gas and liquid; gas and liquid are introduced into the rotating rod of the stirring mechanism through the feeding mechanism, and are discharged into the reaction kettle in a gas-in-liquid form through the gas dispersing mechanism. The contact between gas and liquid is increased, and the gas-liquid mixing performance is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to continuous kettle type reactor technical field especially is related to a kind of reactor of high efficiency use. BACKGROUND

[0002] In chemical production field, reaction kettle as key mechanical equipment is widely used in the reaction process of various materials, such as polymer reaction, plastic preparation and additive preparation etc. Through reaction kettle, the dispersion, emulsification, mixing, dissolution and stirring of material can be realized.

[0003] Continuous stirred tank reactor is widely used in physical and chemical reactions in chemical production, and in plastic, chemical fiber, synthetic rubber three major synthetic material production, its quantity accounts for more than 90% of total amount of synthetic production reactor, and is also used in large quantities in pharmaceutical, paint, fuel, pesticide and other industries. But when gas-liquid reaction is carried out, because gas density is low, it floats to kettle top after bubbling from kettle bottom, which makes gas-liquid mixing in kettle very low, greatly affecting reaction efficiency and quality. How to increase the contact between gas and liquid and improve gas-liquid mixing performance becomes a key problem to be solved. SUMMARY

[0004] In order to solve the problem of how to make gas and liquid fully contact, the utility model provides a kind of reactor of high efficiency use.

[0005] The utility model provides a kind of reactor of high efficiency use, including reaction kettle and drive mechanism including stirring motor, stirring mechanism connected with drive mechanism is equipped in reaction kettle, stirring mechanism includes rotating rod, rotating rod is double-layer nested structure including liquid inlet inner tube and gas inlet outer tube, one-way air valve is equipped on the side wall of the end of gas inlet outer tube close to the top of reaction kettle, rotating rod extends out of reaction kettle and is connected with feeding mechanism, rotating rod extends to kettle bottom and is connected with dispersion mechanism, dispersion mechanism includes liquid inlet channel communicated with liquid inlet inner tube, gas inlet channel communicated with gas inlet outer tube, jetting assembly for gas and liquid ejection, gas and liquid are introduced into rotating rod of stirring mechanism through feeding mechanism, and gas dispersion mechanism is discharged into reaction kettle in the form of gas in liquid.

[0006] Further, the reaction kettle includes upper head and lower head, the outer periphery of the lower head is provided with a jacket, the jacket and the reaction kettle leave a gap for the flow of heat transfer medium, the jacket is provided with a heat transfer medium inlet and a heat transfer medium outlet, the lower head is provided with a discharge pipe, and the upper head is provided with a gas release valve pipe.

[0007] Further, the feeding mechanism comprises a feeding shell, a liquid guide pipe arranged in the shell and communicated with the liquid inlet inner pipe, and a gas guide pipe arranged in the shell and communicated with the gas inlet outer pipe, the length of the liquid inlet inner pipe is greater than that of the gas inlet outer pipe, and a sealing element is arranged at the joint of the liquid inlet inner pipe and the liquid guide pipe.

[0008] Further, the feeding mechanism further comprises a positioning bearing arranged in the shell and connected with the rotating rod.

[0009] Further, the driving mechanism comprises a driving gear connected with the power end of the stirring motor, and a driven gear engaged with the driving gear and fixedly connected with the rotating rod, and the driving gear and the driven gear are arranged in the gear cylinder.

[0010] Further, the stirring mechanism further comprises a mounting platform arranged at the lower side of the gear cylinder and fixedly connected with the upper head, the mounting platform is formed with a first through hole through which the rotating rod passes, the upper head is provided with a second through hole through which the rotating rod passes, and rotating bearings are arranged in the first through hole and the second through hole.

[0011] Further, the stirring mechanism further comprises flat plate-shaped stirring blades arranged along the circumference of the rotating rod, and the stirring blades are connected with the rotating rod at an inclined angle.

[0012] Further, the spraying assembly comprises a cylindrical spraying shell, a feeding hole connected with the rotating rod, and a plurality of material spraying nozzles arranged on the spraying shell and spraying in the direction of the reactor wall.

[0013] Further, the spraying assembly further comprises a plurality of liquid spraying pipes communicated with the liquid inlet channel, the liquid spraying pipes pass through the material spraying nozzles and extend into the reactor, the pipe diameter of the material spraying nozzles is greater than that of the liquid spraying pipes, and the gas inlet channel is arranged in the spraying shell and communicated with the spraying shell.

[0014] Further, the bottom of the spraying shell is provided with a turbulence paddle, and the turbulence paddle comprises a circular ring-shaped support and a plurality of flat plate-shaped blades arranged along the circumference of the support.

[0015] In summary, the utility model has the following beneficial technical effects:

[0016] 1. The utility model discloses a reactor is efficiently used, promotes gas -liquid mixing efficiency, and the rotating rod adopts the double -layer nested structure of liquid inlet inner pipe and gas inlet outer pipe, cooperates the gas dispersion mechanism of bottom, can with gas -liquid form to the reactor in -out gas and liquid, greatly increased gas -liquid contact area and contact time, improves gas -liquid mixing sufficiency, effectively promotes the reaction efficiency.

[0017] 2.The reactor is efficient in use, the gap between the jacket outside the lower head of the reaction kettle and the reaction kettle can be filled with heat carrying medium, heat exchange is realized through the heat carrying medium inlet and outlet, the temperature in the reaction kettle can be accurately controlled, a suitable temperature environment is provided for the reaction, and the stability of product quality is ensured.

[0018] 3.The reactor is efficient in use, the driving mechanism is connected with the driven gear through the meshing of the driving gear and the driven gear, the rotating rod is stably driven to rotate, and installation space is left for the feeding mechanism. The stirring paddle in the stirring mechanism is inclinedly connected to the rotating rod, and different directions of stirring force can be generated during rotation, the mixing effect is further enhanced, the sealing element and the positioning bearing in the feeding mechanism ensure the sealing property of gas and liquid conveying, and stable rotation of the rotating rod is ensured.

[0019] 4.The reactor is efficient in use, the material injection nozzle of the injection assembly sprays in the direction of the reaction kettle wall, the liquid injection pipe extends into the reaction kettle through the material injection nozzle, the pipe diameter is designed to make the liquid injection more dispersive, and better mixing effect is realized in cooperation with the gas. The spoiler paddle at the bottom of the injection shell disturbs the flow of bubbles after the liquid and gas are sprayed out, the circular support and the blades are used to disturb the flow of bubbles, and the uniformity of the reaction is ensured. DRAWINGS

[0020] Figure 1 is a structural schematic view of the reactor efficient in use of the embodiment of the utility model.

[0021] Figure 2 is a sectional view of the reactor efficient in use of the embodiment of the utility model.

[0022] Figure 3 is the sectional view of the reactor efficient in use of the embodiment of the utility model. Figure 2 is a local enlarged view of A in the reactor efficient in use of the embodiment of the utility model.

[0023] Figure 4 is a local enlarged view of B in the reactor efficient in use of the embodiment of the utility model. Figure 2

[0024] Figure 5 is a top view of the driving mechanism of the embodiment of the utility model.

[0025] Figure 6 is a structural schematic view of the injection assembly of the embodiment of the utility model.

[0026] Figure 7 is another angle structural schematic view of the injection assembly of the embodiment of the utility model.

[0027] Figure 8 is the sectional view of C-C in the reactor efficient in use of the embodiment of the utility model. Figure 2 ​​

[0028] Wherein, 1, reaction kettle; 101, upper head; 102, lower head; 103, jacket; 104, heat carrier medium inlet; 105, heat carrier medium outlet; 106, discharge pipe; 107, air release valve pipe; 108, pressure gauge; 2, driving mechanism; 201, stirring motor; 202, driving gear; 203, driven gear; 204, gear cylinder; 3, stirring mechanism; 301, rotating rod; 302, liquid inlet inner pipe; 303, gas inlet outer pipe; 304, one-way air valve; 305, mounting platform; 306, rotating bearing; 307, stirring paddle; 4, feeding mechanism; 401, feeding shell; 402, liquid guide pipe; 403, gas guide pipe; 404, sealing element; 405, positioning bearing; 5, dispersion mechanism; 501, liquid inlet channel; 502, gas inlet channel; 6, injection assembly; 601, injection shell; 602, feed hole; 603, injection nozzle; 604, liquid injection pipe; 7, turbulence paddle; 701, support; 702, blade. DETAILED DESCRIPTION

[0029] The utility model will be made further detailed explanation in combination with the drawings.

[0030] Example 1

[0031] Referring to Figure 1 and Figure 2 , the high-efficiency reactor of the embodiment comprises a reaction kettle 1 and a driving mechanism 2 comprising a stirring motor 201, the reaction kettle 1 is internally provided with a stirring mechanism 3 connected with the driving mechanism 2, the stirring mechanism 3 comprises a rotating rod 301, the rotating rod 301 is a double-layer nested structure comprising a liquid inlet inner pipe 302 and a gas inlet outer pipe 303, the gas inlet outer pipe 303 is provided with a one-way air valve 304 on the side wall of the end close to the top of the reaction kettle 1, the rotating rod 301 extends out of the reaction kettle 1 upward and is connected with a feeding mechanism 4, the rotating rod 301 extends downward to the kettle bottom and is connected with a dispersion mechanism 5, the dispersion mechanism 5 comprises a liquid inlet channel 501 in communication with the liquid inlet inner pipe 302, a gas inlet channel 502 in communication with the gas inlet outer pipe 303, and an injection assembly 6 for gas and liquid injection, gas and liquid are introduced into the rotating rod 301 of the stirring mechanism 3 through the feeding mechanism 4, and the gas and liquid are discharged into the reaction kettle 1 in the form of gas-liquid.

[0032] Referring to Figure 2 , the reaction kettle 1 comprises an upper head 101 and a lower head 102, the outer periphery of the lower head 102 is provided with a jacket 103, a gap for the flow of heat carrier medium is left between the jacket 103 and the reaction kettle 1, the jacket 103 is provided with a heat carrier medium inlet 104 and a heat carrier medium outlet 105, the lower head 102 is provided with a discharge pipe 106, and the upper head 101 is provided with an air release valve pipe 107.

[0033] The circulation flow of the heat carrier medium in the gap of the jacket 103 realizes the temperature regulation of the material in the reaction kettle 1, and can provide heating or cooling function according to the reaction requirement, so as to maintain the reaction in a suitable temperature range and ensure the reaction rate and product quality.

[0034] With reference to Figure 3 , the feeding mechanism 4 comprises a feeding shell 401, a liquid guide pipe 402 arranged in the shell and connected with the liquid inlet inner pipe 302, and a gas guide pipe 403 arranged in the shell and connected with the gas inlet outer pipe 303. The length of the liquid inlet inner pipe 302 is greater than that of the gas inlet outer pipe 303. The liquid inlet inner pipe 302 is connected with the liquid guide pipe 402 and is provided with a sealing element 404 at the connection position.

[0035] The feeding mechanism 4 further comprises a positioning bearing 405 arranged in the shell and connected with the rotating rod 301.

[0036] The positioning bearing 405 keeps the rotating rod 301 rotating stably by the high-precision rolling elements thereof, and ensures that the rotating rod 301 is always in contact with the liquid guide pipe 402. The sealing element 404 ensures that the contact position is sealed and liquid leakage is prevented.

[0037] With reference to Figure 4 and Figure 5 , the driving mechanism 2 comprises a driving gear 202 connected with the power end of the stirring motor 201, and a driven gear 203 engaged with the driving gear 202 and fixedly connected with the rotating rod 301. The driving gear 202 and the driven gear 203 are arranged in a gear cylinder 204.

[0038] The driving mechanism 2 transmits power to the driven gear 203 through the driving gear 202, so that the power output shaft of the stirring motor 201 is not on the same axis as the rotating rod 301 of the stirring mechanism 3, thereby leaving installation space for the feeding mechanism 4.

[0039] With reference to Figure 4 , the stirring mechanism 3 further comprises a mounting platform 305 arranged at the lower side of the gear cylinder 204 and fixedly connected with the upper head 101. The mounting platform 305 is formed with a first through hole through which the rotating rod 301 passes. The upper head 101 is provided with a second through hole through which the rotating rod 301 passes. The first through hole and the second through hole are provided with a rotating bearing 306.

[0040] With reference to Figure 2 , the stirring mechanism 3 further comprises a flat plate-shaped stirring paddle 307 arranged in the circumferential direction of the rotating rod 301. The stirring paddle 307 is connected with the rotating rod 301 at an inclined angle.

[0041] The stirring paddle 307 is made of stainless steel and has an inclined angle of 30-60°. During rotation, transverse and radial stirring shear forces are generated.

[0042] Referring to Figure 6 , the spray assembly 6 comprises a cylindrical spray housing 601, a feed hole 602 connected with the rotating rod 301, and a plurality of spray nozzles 603 arranged on the spray housing 601 and spraying toward the wall of the reactor 1.

[0043] Referring to Figure 8 , the spray assembly 6 further comprises a plurality of liquid spray pipes 604 in communication with the liquid inlet channel 501, the liquid spray pipes 604 extending into the reactor 1 through the spray nozzles 603, the pipe diameter of the spray nozzles 603 being greater than that of the liquid spray pipes 604, and the gas inlet channel 502 being arranged in the spray housing 601 and in communication with the spray housing 601.

[0044] Referring to Figure 7 , the bottom of the spray housing 601 is provided with a turbulence paddle 7, the turbulence paddle 7 comprising a circular support 701 and a plurality of flat blade rows 702 arranged along the circumference of the support 701.

[0045] Working principle: start the heat carrier medium circulation system, adjust the temperature in the reactor 1 to the set value through the heat carrier medium inlet 104 and outlet of the jacket 103, start the stirring motor 201, and deliver the liquid material to the liquid inlet inner pipe 302 of the rotating rod 301 through the liquid guide pipe 402 of the feeding mechanism 4, and deliver the gas material to the gas inlet outer pipe 303 through the gas guide pipe 403. The liquid and gas flow downward in the rotating rod 301 respectively.

[0046] Since the length of the liquid inlet inner pipe 302 is greater than that of the gas inlet outer pipe 303, the liquid inlet inner pipe 302 is in contact with the liquid guide pipe 402, and the positioning bearing 405 is arranged to ensure that the rotating rod 301 can rotate and always align with the liquid guide pipe 402 for communication.

[0047] After the liquid and gas reach the dispersion mechanism 5, they enter the spray assembly 6 through the liquid inlet channel 501 and the gas inlet channel 502 respectively. The gas enters the spray housing 601 through the gas inlet channel 502 and is sprayed out from the gap between the liquid spray pipe 604 and the spray nozzle 603, and the liquid is sprayed out from the liquid spray pipe 604. When the liquid is sprayed out, the gas surrounds the liquid to realize liquid-in-gas. During the spraying process, the gas-liquid mixture is fully mixed with the liquid in the reactor 1. At the same time, the stirring paddle 307 of the stirring mechanism 3 rotates continuously to stir the material, further enhancing the mixing effect. The turbulence paddle 7 disturbs the sprayed gas-liquid material to ensure that the material is uniformly distributed in the reactor 1, promoting the reaction.

[0048] When the gas supply is stopped, if the gas pressure in the reaction kettle 1 is too large, the excess gas which has not participated in the reaction enters the gas inlet outer pipe 303 again through the one-way air valve 304, is input into the liquid through the dispersion mechanism 5, realizes secondary circulation to participate in the incomplete reaction, and through observation of the pressure gauge 108 reading, if the gas pressure exceeds the safety threshold, the overpressure gas in the reaction kettle 1 can be discharged through the gas exhaust valve pipe 107 for safety treatment.

[0049] The discharge pipe 106 on the lower head 102 is opened, and the reacted material is discharged from the reaction kettle 1.

[0050] The above are preferred embodiments of the present application, and are not intended to limit the protection scope of the present application, so: equivalent changes made according to the structure, shape, principle of the present application should be covered within the protection scope of the present application.

Claims

1. A reactor that is used efficiently, characterized in that, The reactor includes a reaction vessel (1) and a drive mechanism (2) including a stirring motor (201). The reaction vessel (1) is equipped with a stirring mechanism (3) connected to the drive mechanism (2). The stirring mechanism (3) includes a rotating rod (301). The rotating rod (301) has a double-layer nested structure including an inner liquid inlet pipe (302) and an outer air inlet pipe (303). A one-way vent valve (304) is provided on the side wall of the outer air inlet pipe (303) near the top of the reaction vessel (1). The rotating rod (301) extends upward out of the reaction vessel. (1) and connected to a feeding mechanism (4), the rotating rod (301) extends downward to the bottom of the vessel and is connected to a dispersing mechanism (5), the dispersing mechanism (5) includes a liquid inlet channel (501) connected to the liquid inlet inner pipe (302), an air inlet channel (502) connected to the air inlet outer pipe (303), and a spray assembly (6) for gas and liquid to be sprayed out. Gas and liquid are introduced into the rotating rod (301) of the stirring mechanism (3) through the feeding mechanism (4), and discharged into the reaction vessel (1) in the form of gas-liquid mixture through the gas dispersing mechanism (5).

2. The reactor for efficient use according to claim 1, characterized in that, The reactor (1) includes an upper head (101) and a lower head (102). The lower head (102) is provided with a jacket (103) on its outer periphery. A gap is left between the jacket (103) and the reactor (1) for the flow of heat transfer medium. The jacket (103) is provided with a heat transfer medium inlet (104) and a heat transfer medium outlet (105). The lower head (102) is provided with a discharge pipe (106). The upper head (101) is provided with a venting valve pipe (107).

3. The reactor for efficient use according to claim 2, characterized in that, The feeding mechanism (4) includes a feeding housing (401), a liquid guide pipe (402) disposed inside the housing and connected to the liquid inlet inner pipe (302), and a gas guide pipe (403) disposed inside the housing and connected to the gas inlet outer pipe (303). The length of the liquid inlet inner pipe (302) is greater than that of the gas inlet outer pipe (303). A sealing element (404) is provided at the connection between the liquid inlet inner pipe (302) and the liquid guide pipe (402).

4. The reactor for efficient use according to claim 3, characterized in that, The feeding mechanism (4) also includes a positioning bearing (405) disposed inside the housing and connected to the rotating rod (301).

5. The reactor for efficient use according to claim 4, characterized in that, The drive mechanism (2) includes a drive gear (202) connected to the power end of the stirring motor (201), and a driven gear (203) meshing with the drive gear (202) and fixedly connected to the rotating rod (301). The drive gear (202) and the driven gear (203) are placed inside the gear cylinder (204).

6. The reactor for efficient use according to claim 5, characterized in that, The stirring mechanism (3) further includes an installation platform (305) located on the lower side of the gear cylinder (204) and fixedly connected to the upper end cap (101). The installation platform (305) has a first through hole through which the rotating rod (301) passes. The upper end cap (101) has a second through hole through which the rotating rod (301) passes. Rotary bearings (306) are provided in the first and second through holes.

7. The reactor for efficient use according to claim 6, characterized in that, The stirring mechanism (3) further includes a flat stirring blade (307) arranged circumferentially along the rotating rod (301), the stirring blade (307) being inclined and angularly connected to the rotating rod (301).

8. The reactor for efficient use according to claim 7, characterized in that, The spraying assembly (6) includes a cylindrical spraying housing (601), a feed hole (602) connected to a rotating rod (301), and a plurality of spray nozzles (603) disposed on the spraying housing (601) to spray towards the wall of the reactor (1).

9. The reactor for efficient use according to claim 8, characterized in that, The spray assembly (6) also includes a plurality of spray pipes (604) communicating with the liquid inlet channel (501). The spray pipes (604) extend into the reactor (1) through the nozzle (603). The diameter of the nozzle (603) is larger than the diameter of the spray pipes (604). The air inlet channel (502) is located inside the spray housing (601) and communicates with the spray housing (601).

10. The reactor for efficient use according to claim 9, characterized in that, The bottom spoiler (7) of the jet housing (601) includes an annular support (701) and a plurality of flat blades (702) arranged circumferentially along the support (701).

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