CN210545093U - Horizontal reaction kettle - Google Patents
Horizontal reaction kettle Download PDFInfo
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- CN210545093U CN210545093U CN201920949785.5U CN201920949785U CN210545093U CN 210545093 U CN210545093 U CN 210545093U CN 201920949785 U CN201920949785 U CN 201920949785U CN 210545093 U CN210545093 U CN 210545093U
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Abstract
The utility model discloses a horizontal reaction kettle, which comprises a kettle body, wherein the upper end of the kettle body is provided with a feed inlet, a nitrogen outlet, a stirring device arranged in the kettle body side by side, a driving device for driving the stirring device to stir, and a discharge screw rod arranged at the bottom in the kettle body, and the discharge port is arranged at the bottom end of the kettle body and corresponds to the end part of the discharge screw rod; the kettle body is of a double-layer cavity structure, and a heat medium is arranged in the cavity; the stirring device comprises a rotating shaft and stirring blades arranged on the rotating shaft, and the driving device is in driving connection with the rotating shaft. The utility model has the advantages that: the reaction kettle is suitable for a dry method for preparing melamine polyphosphate, can quickly finish production under the conditions of stirring, crushing, heating and nitrogen environment, saves working procedures, shortens the process time and reduces the strength of manual operation.
Description
Technical Field
The utility model relates to a chemical industry field reation kettle especially relates to a horizontal reation kettle.
Background
The flame retardant is a fine chemical product formed along with the continuous expansion of the fields of plastics, rubber, synthetic fiber high molecular materials and application thereof, the variety and consumption of the flame retardant are rapidly increased since the seventies, and the flame retardant is increased by 6 to 8 percent in every year around the world, wherein about 80 percent of the flame retardant is used for the flame retardance of the plastics. Among the many adjuvants required by the plastics industry, flame retardants have moved beyond the second largest varieties of plasticizers. The flame retardant is divided into inorganic and organic flame retardants, wherein the former includes antimony series, aluminum series, magnesium series, boron series, molybdenum series, tin series and the like, the inorganic flame retardant has low smoke generation amount during combustion, does not generate toxic gas, but has large addition amount, and can influence the physical and mechanical properties of products. The latter are mainly halogen-based, phosphorus-based, halogen-phosphorus-based, phosphorus-nitrogen-based, organosilicon, and the like. Halogen flame retardants and products thereof have toxicity problems, and have been replaced by environmentally friendly flame retardants such as nitrogen and phosphorus in recent years.
The traditional production process comprises the following steps: reacting melamine and 85% phosphoric acid in an excessive water system to obtain a melamine phosphate monomer, cooling, filtering and drying to obtain a melamine phosphate semi-finished product; and (3) carrying out nitrogen protection polymerization reaction on the semi-finished product in a sintering furnace at the temperature of 300 ℃ to obtain the MPP finished product. The method has long process, multiple working procedures, low efficiency and large amount of acid wastewater.
The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person skilled in the art.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the technical problem that will solve lies in: how to solve the problems of more working procedures and low efficiency of the traditional production process.
The utility model discloses a solve above-mentioned technical problem through following technical scheme: the utility model discloses a horizontal reaction kettle, which comprises a kettle body, wherein the upper end of the kettle body is provided with a feed inlet, a nitrogen outlet, a stirring device arranged in the kettle body side by side, a driving device for driving the stirring device to stir, and a discharge screw rod arranged at the bottom of the kettle body, and the discharge outlet is arranged at the bottom of the kettle body and corresponds to the end part of the discharge screw rod; the kettle body is of a double-layer cavity structure, and a heat medium is arranged in the cavity;
the stirring device comprises a rotating shaft and stirring blades arranged on the rotating shaft, and the driving device is in driving connection with the rotating shaft.
In order to get rid of the problems of long production process, multiple working procedures and low efficiency of the traditional production method, firstly, melamine and polyphosphoric acid are used as raw materials for dry-method production in a horizontal reaction kettle; the mol ratio of melamine to polyphosphoric acid is 1.1-1.3: 1.0, and the melamine and polyphosphoric acid are mixed and reacted under the protection of nitrogen, wherein the reaction temperature is 250-300 ℃, and the reaction time is 1.5-3 hours. After unloading, the mixture is automatically fed into a storage bin, cooled and crushed to obtain a finished product. The production method has high efficiency, pure product, yield of more than 95 percent and no industrial wastewater. The utility model provides a horizontal reation kettle of this dry process production, this reation kettle can realize stirring, smashing through stirring vane, and the bilayer structure of the cauldron body is filled into hot oil in the middle of and is realized the heating, consequently, this horizontal reation kettle can realize stirring, smashing, under heating, the nitrogen gas ambient condition, accomplishes production fast, has saved the process, has shortened process time, has reduced advantages such as manual operation's intensity.
Preferably, an inlet for introducing the heat medium or/and an outlet for discharging the heat medium are/is arranged on the cavity at the outer side of the kettle body.
Hot water or hot oil can be introduced, the hot oil after external heating can be introduced into the double-layer structure of the kettle body, or a heating wire is arranged in the double-layer structure of the kettle body for heating.
Preferably, the stirring blade is a shear blade, the shear blade and the inner wall of the kettle body are arranged at intervals, and the edge of the shear blade is a blade.
When the two shear type blades work, a shear type structure can be formed, materials are further crushed, and mixing and reaction are more uniform.
Preferably, the kettle body is also internally provided with a temperature sensor, and the temperature sensor is connected with the PLC. The temperature sensor can transmit a temperature signal to the controller, the temperature is controlled to be within a certain threshold value, heating is continued when the temperature is lower than the threshold value, and heating is stopped when the temperature is higher than the threshold value; specific operation, which is conventional in the art, is only given here in the connection relationship of hardware; of course, the temperature can also be measured manually, the temperature can be adjusted by controlling the flow of the hot oil, or the power on and off of the heating wire in the hot oil can be controlled manually.
Preferably, the driving device comprises a motor and a speed reducer, the motor is connected with the speed reducer, and the speed reducer is connected with the rotating shaft.
The speed reducer can realize the regulation of speed.
Preferably, the two ends of the rotating shaft are rotatably connected to the two sides of the kettle body through bearings.
Preferably, the device also comprises a discharging driving device which comprises a discharging motor, wherein the discharging motor is connected with a discharging screw rod through a belt. Through the screw rod ejection of compact, the ejection of compact is convenient, need not artifical shovel out.
Preferably, the upper end of the kettle body is also provided with an explosion-proof membrane and a pressure gauge.
Preferably, supporting legs for fixing are arranged on two sides of the kettle body.
Preferably, still include the bottom plate, the cauldron body passes through the stabilizer blade to be fixed on the bottom plate, and drive arrangement, ejection of compact drive arrangement's bottom are all fixed on the bottom plate. Can be uniformly arranged on the bottom plate, and the levelness of the working surface is ensured.
Compared with the prior art, the utility model has the following advantages:
(1) in order to get rid of the problems of long production process, multiple working procedures and low efficiency of the traditional production method, firstly, melamine and polyphosphoric acid are used as raw materials for dry-method production in a horizontal reaction kettle; the mol ratio of melamine to polyphosphoric acid is 1.1-1.3: 1.0, and the melamine and polyphosphoric acid are mixed and reacted under the protection of nitrogen, wherein the reaction temperature is 250-300 ℃, and the reaction time is 1.5-3 hours. After unloading, the mixture is automatically fed into a storage bin, cooled and crushed to obtain a finished product. The production method has high efficiency, pure product, yield of more than 95 percent and no industrial wastewater. The utility model provides a horizontal reaction kettle for dry production, which can realize stirring and crushing through stirring blades, has a double-layer structure of a kettle body, and is filled with hot oil in the middle to realize heating, so that the horizontal reaction kettle can realize stirring, crushing, heating and quick production under the nitrogen environment conditions, thereby saving working procedures, shortening the process time, reducing the intensity of manual operation and the like;
(2) when the two shear type blades work, a shear type structure can be formed, materials are further crushed, and mixing and reaction are more uniform.
Drawings
FIG. 1 is a schematic structural view of a bedroom reactor according to an embodiment of the present invention;
FIG. 2 is a right side view of FIG. 1;
FIG. 3 is a top view of FIG. 1;
fig. 4 is a schematic view of a stirring blade.
Reference numbers in the figures: the reactor comprises a kettle body 1, a feed inlet 11, a nitrogen inlet 12, a nitrogen outlet 13, an explosion-proof membrane 14 and a pressure gauge 15
A stirring device 2, a rotating shaft 21, a stirring blade 22,
Detailed Description
The embodiments of the present invention will be described in detail below, and the present embodiment is implemented on the premise of the technical solution of the present invention, and a detailed implementation manner and a specific operation process are given, but the scope of the present invention is not limited to the following embodiments.
The first embodiment is as follows:
as shown in fig. 1 to 3, the horizontal reaction kettle in this embodiment includes a kettle body 1, a feeding port 11, a nitrogen inlet 12, a nitrogen outlet 13, two stirring devices 2 arranged in the kettle body side by side, a driving device 4 for driving the stirring devices 2 to stir, and a discharging screw 3 arranged at the bottom in the kettle body; the kettle body 1 is of a double-layer cavity structure, and a heat medium is arranged in the cavity;
the feed inlet 11 is a cover plate and is clamped on the kettle body 1 through a buckle structure on the periphery.
The discharge gate sets up in cauldron body bottom side to corresponding to the tip of ejection of compact screw rod 3, still include ejection of compact drive arrangement, mainly ejection of compact motor 31, ejection of compact motor 31 passes through the transmission end of belt connection ejection of compact screw rod 3 tip.
Through the screw rod ejection of compact, the ejection of compact is convenient, need not artifical shovel, and the belt can be the belt of triangle-shaped.
As shown in fig. 4, the stirring device 2 includes a rotating shaft 21 and stirring blades 22 disposed on the rotating shaft 21, the driving device 4 is connected to the rotating shaft 21 in a driving manner, and two ends of the rotating shaft 21 are connected to two sides of the kettle body 1 through sealed bearings. The outer layer of the kettle body 1 is provided with an inlet for introducing a heat medium or/and an outlet for outflow, the inlet and the outlet are provided with structures beneficial to oil introduction, and the upper part of the kettle body 1 is preferably selected for convenience, so that the kettle can be selected by a person skilled in the art at will.
In addition, the heat-insulating material can be arranged into a three-layer cavity structure to form two cavities, wherein one cavity is provided with hot oil, and the other cavity is internally provided with a heat-insulating layer filled with heat-insulating materials and arranged as required.
When in use, hot oil or other media are filled in the kettle body 1, the method is considered to be a dry method for preparing melamine polyphosphate, and the hot oil is preferred;
the heat medium can be provided by introducing the heated heat medium into the double-layer structure of the kettle body 1 and ensuring the circulating flow, thereby ensuring the continuous supply of the temperature; or a heating wire is arranged in a double-layer cavity type structure, and heating is automatically realized by electrifying and powering off.
The new method comprises the following steps: the method is characterized in that melamine and polyphosphoric acid are used as raw materials and are produced in a horizontal reaction kettle in a dry method, and the molar ratio of the melamine to the polyphosphoric acid is 1.1-1.3: 1.0; and carrying out mixed reaction under the protection of nitrogen, wherein the reaction temperature is 250-300 ℃, and the reaction time is 1.5-3 hours. After unloading, the mixture is automatically fed into a storage bin, cooled and crushed to obtain a finished product.
Therefore, the nitrogen inlet and the nitrogen outlet are formed in the kettle body 1, the hot oil is used for heating, and the hot oil can transmit heat to the interior of the kettle body 1, so that the purposes of drying, heating and nitrogen environment are achieved in the stirring process.
In order to get rid of the problems of long production process, multiple working procedures and low efficiency of the traditional production method, the production method has high efficiency and pure product, the yield is more than 95 percent, and industrial wastewater is not generated. The utility model provides a horizontal reation kettle of this dry process production, this reation kettle can realize stirring, smashing through stirring vane, and the heating can be realized to the double-deck cavity formula structure of the cauldron body 1, and consequently, this reation kettle can realize stirring, smashing, under heating, the nitrogen gas ambient condition, accomplishes production fast, has saved the process, has shortened process time, has reduced advantages such as manual operation's intensity.
Example two:
as shown in fig. 4, on the basis of the first embodiment, the stirring blade 22 is a shear blade, the shear blade is spaced from the inner wall of the kettle body 1, the spacing is not too large, the material inside the kettle body 1 can be removed to a certain extent, the spacing distance can be 0.5cm-1cm, and the edge of the shear blade is a knife edge.
When the two shear type blades work, a shear type structure can be formed, materials are further crushed, the contact surface of the materials is enlarged, and mixing and reaction are more uniform.
Example three:
on the basis of the first embodiment or the second embodiment, a temperature sensor is further arranged inside the kettle body 1 and connected with a PLC (programmable logic controller). The temperature sensor can transmit a temperature signal to the controller, the temperature is controlled to be within a certain threshold value, heating is continued when the temperature is lower than the threshold value, and heating is stopped when the temperature is higher than the threshold value; specific operation, which is conventional in the art, is only given here in the connection relationship of hardware; of course, the temperature can also be measured manually, and the electrification and the outage of the heating wires or the flow of the hot oil can be controlled manually to control the temperature.
As shown in fig. 3, the driving device 4 in the above embodiment includes a motor 41 and a speed reducer 42, the motor 41 is connected to the speed reducer 42, and the speed reducer 42 is connected to the rotating shaft 21. The speed reducer 42 can achieve speed adjustment.
Wherein, the cauldron body 1 both sides are equipped with the stabilizer blade that is used for fixing, and its upper end still is equipped with rupture membrane 14, manometer 15.
As shown in fig. 1, the present embodiment further includes a bottom plate 5, the kettle body 1 is fixed on the bottom plate through support legs, and the bottoms of the driving device 4 and the discharging driving device are fixed on the bottom plate 5. Can be uniformly arranged on the bottom plate 5, and the levelness of the working surface is ensured. Alternatively, a nitrogen tank may be placed on the base plate 5, the nitrogen tank being connected to the nitrogen inlet.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. The horizontal reaction kettle is characterized by comprising a kettle body, wherein the upper end of the kettle body is provided with a feed inlet, a nitrogen outlet, a stirring device arranged in the kettle body side by side, a driving device for driving the stirring device to stir, and a discharge screw rod arranged at the bottom in the kettle body, and the discharge outlet is arranged at the bottom end of the kettle body and corresponds to the end part of the discharge screw rod; the kettle body is of a double-layer cavity structure, and a heat medium is arranged in the cavity;
the stirring device comprises a rotating shaft and stirring blades arranged on the rotating shaft, and the rotating shaft driving device is in driving connection with the rotating shaft.
2. The horizontal reaction kettle according to claim 1, wherein an inlet for introducing a heat medium or/and an outlet for discharging the heat medium are/is arranged on the outer cavity of the kettle body.
3. The horizontal reactor of claim 1, wherein the stirring blade is a shear blade, the shear blade is spaced from the inner wall of the reactor body, and the edge of the shear blade is a knife edge.
4. The horizontal reaction kettle according to claim 1, wherein a temperature sensor is further arranged in the kettle body and connected with a PLC controller.
5. The horizontal reactor according to claim 1, wherein the driving device comprises a motor and a speed reducer, the motor is connected with the speed reducer, and the speed reducer is connected with the rotating shaft.
6. The horizontal reaction kettle according to claim 1, wherein two ends of the rotating shaft are rotatably connected to two sides of the kettle body through bearings.
7. The horizontal reaction kettle according to claim 1, further comprising a discharging driving device comprising a discharging motor, wherein the discharging motor is connected with a discharging screw through a belt.
8. The horizontal reaction kettle according to claim 1, wherein an explosion-proof membrane and a pressure gauge are further arranged at the upper end of the kettle body.
9. The horizontal reaction kettle according to claim 7, wherein two sides of the kettle body are provided with support legs for fixing.
10. The horizontal reaction kettle according to claim 8, further comprising a bottom plate, wherein the kettle body is fixed on the bottom plate through support legs, and the bottoms of the driving device and the discharging driving device are fixed on the bottom plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920949785.5U CN210545093U (en) | 2019-06-24 | 2019-06-24 | Horizontal reaction kettle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920949785.5U CN210545093U (en) | 2019-06-24 | 2019-06-24 | Horizontal reaction kettle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210545093U true CN210545093U (en) | 2020-05-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920949785.5U Active CN210545093U (en) | 2019-06-24 | 2019-06-24 | Horizontal reaction kettle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210545093U (en) |
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2019
- 2019-06-24 CN CN201920949785.5U patent/CN210545093U/en active Active
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