Temperature adjusting system applied to chemical production

Abstract

The utility model discloses a temperature adjusting system applied to chemical industry production, and solves the technical problems that the existing temperature control system cannot effectively balance the temperature of each part in a reaction kettle, so that the reaction of chemicals is incomplete, and the product yield is low. The temperature adjusting system comprises a sealed reaction kettle, the reaction kettle is connected with a liftable stirring device, a plurality of temperature detection modules are sequentially connected along the inner wall of the reaction kettle from high to low, the temperature detection modules are connected with adjusters used for controlling the stirring device to ascend and descend, and stirring blades of the stirring device and the temperature detection modules are arranged at intervals. The plurality of temperature detection modules improve the accuracy of the temperature detection result, the stirring blades are inclined downwards to reduce the stress of the stirring device, the reliability of the system is improved, the liftable stirring device realizes the stirring of each part in the reaction kettle, the temperature regulation efficiency and the product yield are improved, the whole process is automatically regulated, the structure is simple, and the practicability is strong.

Description

Technical Field

[0001] The utility model relates to the technical field of chemical production equipment, in particular to a temperature regulating system applied to chemical production. Background Art

[0002] During the chemical production reaction process, some chemical reaction systems lack temperature control during the reaction process, which makes it easy for overheating or reaction temperature not to be reached, resulting in reduced product reaction degree, waste of raw materials, and increased production costs.

[0003] In response to the above problems, a Chinese utility model patent with an authorization announcement date of 2022.04.29 and an authorization announcement number of CN 216396327 U discloses a polyacrylamide polymerization reactor with a temperature control function, including a reactor and a motor, a feed pipe is provided on the upper surface of the reactor, a discharge pipe is provided on the bottom surface, and a pipe valve is connected in series in the discharge pipe; the motor is arranged at the center of the upper surface of the reactor, the output shaft of the motor is rotatably connected to the top wall of the reactor through a bearing and extends to the inside of the reactor shell, a hollow rotating rod is provided at the lower end of the output shaft of the motor, and a left-right symmetrical notch is provided at the upper end of the outer arc surface of the hollow rotating rod. When in use, the controller controls the operation of the motor to drive the hollow rotating rod and the stirring blade to rotate, the stirring blade is used to mix and stir the polyacrylamide, the ambient temperature in the reactor is detected by the temperature sensor, and the data is fed back to the controller. When the ambient temperature inside the reactor is high, the external refrigerant is sent into the cavity of the hollow rotating rod and the stirring plate through the refrigerant inlet pipe, and the temperature of the polyacrylamide is quickly reduced by heat exchange. After cooling, the pipe valve inside the refrigerant discharge pipe is opened to allow the refrigerant to be discharged through the lower connecting seat and the refrigerant discharge pipe. When the ambient temperature inside the reactor shell is low, the electric heating wire is energized to generate heat to directly heat the ambient temperature inside the reactor, thereby realizing free regulation of the ambient temperature inside the reactor.

[0004] When the reaction process in the reactor is in the feeding reaction stage, violent endothermic or exothermic reactions often occur, resulting in very uneven temperatures in various reaction parts. For example, temperature stratification between the upper and lower layers of materials. The above-mentioned temperature control system can only stir the local materials through the stirring plate. Passing refrigerant into the stirring plate or using heating wire to cool or heat the materials still has the problem of uneven temperature in various reaction parts in the reactor, which leads to incomplete reaction and low product yield. Utility Model Content

[0005] In view of the deficiencies in the above-mentioned background technology, the utility model proposes a temperature regulation system applied to chemical production, which solves the technical problem that the existing temperature control system cannot effectively balance the reaction temperature of various parts in the reactor, thereby leading to incomplete chemical reaction and low product yield.

[0006] The technical solution of this application is:

[0007] A temperature regulation system used in chemical production comprises a sealed reactor, the reactor is connected to a liftable stirring device, a plurality of temperature detection modules are connected in sequence from high to low along the inner wall of the reactor, the temperature detection modules are connected to a regulator for controlling the lifting of the stirring device, and the stirring blades of the stirring device are spaced apart from the temperature detection modules.

[0008] The temperature detection module of the present technical solution is arranged in multiple layers from high to low along the inner wall of the reactor, respectively detecting the reaction temperature in the reactor at different heights. The regulator controls the stirring device to rise and fall according to the detected temperature, stirs the area with higher temperature, and makes the reaction temperature in various places in the reactor in a balanced state.

[0009] Preferably, the temperature detection modules are arranged in at least three layers from high to low. Three layers of real-time temperature detection are arranged in the reactor from high to low, and the temperature detection modules in each layer are evenly spaced.

[0010] Preferably, at least two temperature detection modules are provided on each layer from high to low. Multiple temperature detection points are provided on each layer to avoid the situation where a single detection module is abnormal, resulting in large temperature detection deviation or missed detection.

[0011] Preferably, each layer of temperature detection modules is equiangularly distributed around the central axis of the reactor. The temperature detection modules should be arranged so that the temperature monitoring range is as large as possible.

[0012] Preferably, the stirring device comprises a lifting mechanism, a driving motor and a stirring shaft, wherein the lifting mechanism is connected to the top of the reactor, the driving motor is connected to the lifting mechanism, one end of the stirring shaft is connected to the output shaft of the driving motor, and the other end is connected to a plurality of stirring blades. A lifting mechanism is provided on the top of the reactor to drive the driving motor to rise or fall, the stirring shaft passes through the lifting mechanism and is connected to the driving motor, and the lifting of the driving motor drives the lifting of the stirring shaft and the stirring blades.

[0013] Preferably, the stirring blades are provided with at least two layers along the stirring shaft. The multiple layers of stirring blades can increase the stirring range of the stirring device.

[0014] Preferably, at least two stirring blades are provided on each layer, and the stirring blades are equiangularly distributed around the stirring shaft. The equiangular distribution helps to maintain the stability of the stirring shaft.

[0015] Preferably, the end of the stirring blade is arranged obliquely downward along the direction of the stirring shaft. The stirring blade is arranged obliquely downward to reduce the force on the stirring blade and prevent the material from accumulating on the stirring blade during the stirring process.

[0016] Preferably, the temperature detection module is arranged in the gap between each layer of stirring blades. The temperature detection module and the stirring blades are arranged alternately to avoid interference between the two and to avoid the heat of the stirring blades affecting the temperature detection result.

[0017] Preferably, a valve is provided at the bottom of the reactor, and the valve at the bottom of the reactor can control the discharge of materials.

[0018] Compared with the prior art, the technical solution disclosed in the utility model has the following beneficial effects:

[0019] 1. By setting a stirring device that can be raised and lowered, the materials in various parts of the reactor can be stirred, which solves the problem of severe temperature imbalance in various parts of the reactor caused by the violent endothermic or exothermic reaction of the materials when feeding the reactor, so that the reaction temperature is maintained stable, the yield of the product is improved, and the practicability is strong;

[0020] 2. By setting multiple layers of temperature detection modules from high to low along the inner wall of the reactor, multiple temperature detection modules are evenly set around the central axis of the reactor to realize real-time monitoring of the reaction temperature of each part of the reactor, and feed back the temperature detection results to the regulator, and the regulator controls the stirring device to adjust the stirring position in time, with simple structure and convenient operation;

[0021] 3. The stirring blades are spaced apart from the top of the reactor to avoid interference during the lifting and lowering adjustment of the stirring device. The stirring blades are arranged in multiple layers, and each layer has multiple stirring blades evenly arranged. Each stirring blade is arranged tilted downward. The multiple layers can increase the stirring range of the stirring device. The uniform and tilted downward arrangement can reduce the stress on the stirring device, and the reliability is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present utility model, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0024] Description of Figure Numbers:

[0025] 1 reactor, 2 stirring device, 201 driving motor, 202 stirring shaft, 203 stirring blade, 204 lifting mechanism, 3 regulator, 4 circuit, 5 temperature measurement module, 501 upper temperature measurement module, 502 middle temperature measurement module, 503 lower temperature measurement module, 6 valve. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the core concept of the utility model and the following embodiments, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] Example 1, a temperature control system for chemical production, such as Figure 1 As shown, it includes a sealed reactor 1, the reactor 1 is connected to a liftable stirring device 2, a plurality of temperature detection modules 5 are connected in sequence from high to low along the inner wall of the reactor 1, the temperature detection module 5 is connected to a regulator 3 for controlling the lifting of the stirring device 2, and the stirring blade 203 of the stirring device 2 is spaced apart from the temperature detection module 5.

[0028] Specifically, the multi-layer temperature detection module 5 can monitor the reaction temperature of each part in the reactor 1 in real time, and feed back the detected temperature to the regulator 3. The regulator 3 compares the detected temperature with the preset temperature. When the compared temperature is normal, the stirring device 2 is only used to stir the material in the reactor 1 in real time. When the compared temperature is abnormal, for example, the real-time temperature is too high compared to the preset temperature, the regulator 3 controls the stirring device 2 to rise or fall, strengthens the stirring of the part with abnormal temperature detection, and then adjusts the reaction temperature of each part to be balanced. When the temperature is balanced, the regulator 3 controls the stirring device 2 to rise or fall again, so that the stirring device 2 returns to the middle position for stirring. The stirring blade 203 and the temperature detection module 5 and the top of the reactor 1 are spaced apart to avoid interference between the stirring blade 203 and the temperature detection module 5 or the reactor 1.

[0029] Embodiment 2, based on embodiment 1, is a temperature regulating system applied to chemical production, wherein the temperature detection module 5 is provided with at least 3 layers from high to low. The temperature detection module 5 is provided with multiple layers from high to low along the inner wall of the reactor 1, respectively detecting the reaction temperature in the reactor 1 at different heights, and the detection result and detection position are more accurate, which facilitates determining the position where the stirring device 2 needs to move.

[0030] Embodiment 3, based on embodiment 1 or 2, a temperature control system applied to chemical production, wherein at least two temperature detection modules 5 are arranged on each layer from high to low. Multiple temperature detection points are arranged on each layer to avoid the situation where a single temperature detection module 5 is prone to abnormality, resulting in large temperature detection deviation or missed detection.

[0031] Embodiment 4, based on embodiment 3, is a temperature control system applied to chemical production, wherein each layer of temperature detection modules 5 is equiangularly distributed around the central axis of the reactor 1. The equiangular distribution of the temperature detection modules 5 around the central axis of the reactor 1 can maximize the temperature monitoring range.

[0032] Embodiment 5, based on Embodiment 1, a temperature regulating system applied to chemical production, the stirring device 2 comprises a lifting mechanism 204, a driving motor 201 and a stirring shaft 202, the lifting mechanism 204 is connected to the top of the reactor 1, the driving motor 201 is connected to the lifting mechanism 204, one end of the stirring shaft 202 is connected to the output shaft of the driving motor 201, and the other end is connected to a plurality of stirring blades 203. The top of the reactor 1 is provided with a lifting mechanism 204 for driving the driving motor 201 to rise or fall, the stirring shaft 202 passes through the lifting mechanism 204 and is connected to the driving motor 201, the driving motor 201 is lifted and lowered, and then the stirring shaft 202 and the stirring blades 203 are lifted and lowered, and the lifting mechanism 204 can be a hydraulic rod or a ball screw transmission mechanism or other linear motion mechanism, as long as a linear displacement of a certain distance can be achieved.

[0033] Embodiment 6, based on embodiment 5, is a temperature regulating system applied to chemical production, wherein the stirring blades 203 are provided with at least two layers along the stirring shaft 202. The multi-layer stirring blades 203 can increase the stirring range of the stirring device 2, improve the stirring effect and the temperature regulating efficiency.

[0034] Embodiment 7, based on embodiment 5 or 6, a temperature regulating system applied to chemical production, each layer of stirring blades 203 is provided with at least two, and each stirring blade 203 is equiangularly distributed around the stirring shaft 202. The equiangular distribution helps to maintain the stability of the center of the stirring shaft 202, reduce the force on the stirring shaft 202, increase the stirring range of the stirring device 2, and improve the stirring effect and temperature regulation efficiency.

[0035] Embodiment 8, based on Embodiment 5 or 6, a temperature regulating system applied to chemical production, wherein the end of the stirring blade 203 is arranged obliquely downward along the direction of the stirring shaft 202. The stirring blade 203 is arranged obliquely downward to reduce the force on the stirring blade 203, and at the same time, prevent the material from accumulating above the stirring blade 203 during the stirring process, so that the material gradually moves downward with the stirring, which is convenient for discharging after the reaction is completed.

[0036] Embodiment 9, based on any one of Embodiments 1-2, 4-6, a temperature regulating system applied to chemical production, wherein the temperature detection module 5 is arranged in the gap between each layer of stirring blades 203. The temperature detection module 5 and the stirring blades 203 are arranged alternately to avoid interference between the two, to avoid the heat of the stirring blades 203 affecting the temperature detection result, and to improve the accuracy of the detection result.

[0037] Embodiment 10, based on embodiment 1, is a temperature regulating system applied to chemical production, wherein a valve 6 is provided at the bottom of the reactor 1. The valve 6 is used to control the discharge of materials after the reaction is completed.

[0038] The working principle of the temperature regulation system of the utility model is as follows:

[0039] Three layers of temperature measurement modules 5 are installed in sequence from high to low on the inner wall of the side of the reactor 1, namely, an upper temperature measurement module 501, a middle temperature measurement module 502, and a lower temperature measurement module 503. Each layer includes two temperature measurement modules 5 symmetrically distributed about the central axis of the reactor 1. The temperature measurement module 5 is a temperature sensor. The detection end of the temperature sensor is in contact with the material in the reactor 1. The other end of the temperature sensor is connected to the regulator 3 through a line 4. The temperature sensor feeds back the detected real-time temperature to the regulator 3 to realize real-time monitoring of the reaction temperature of each part in the reactor 1. Since the material will produce a violent endothermic or exothermic reaction during the feeding reaction stage, resulting in serious imbalance in the reaction temperature of each part in the reactor 1, the temperature sensor 5 feeds back the detected temperature to the regulator 3. After comparing the real-time detected temperature with the preset temperature, the regulator 3 controls the lifting mechanism 204 to rise or fall according to the temperature change, thereby driving the driving motor 201, the stirring shaft 202, and the stirring blade 203 to rise or fall, and stir the reaction part with abnormal temperature, thereby realizing real-time automatic temperature adjustment. The temperature adjustment system of the utility model is fully automatic, does not require manual operation, and automatically adjusts the reaction temperature in real time, is energy-saving and environmentally friendly, and has a high safety factor.

[0040] The parts not described in detail in the present invention are all conventional technical means known to those skilled in the art.

[0041] The above content shows and describes the basic principle, main features and beneficial effects of the utility model. The above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A temperature regulating system for chemical production, comprising a sealed reaction kettle (1), characterized in that: The reactor (1) is connected to a stirring device (2) that can be raised or lowered. A plurality of temperature detection modules (5) are connected in sequence from high to low along the inner wall of the reactor (1). The temperature detection modules (5) are connected to a regulator (3) for controlling the raising or lowering of the stirring device (2). The stirring blades (203) of the stirring device (2) are spaced apart from the temperature detection modules (5).

2. The temperature regulating system for chemical production according to claim 1, characterized in that: The temperature detection module (5) is provided with at least three layers from high to low.

3. The temperature regulating system for chemical production according to claim 1 or 2, characterized in that: At least two temperature detection modules (5) are arranged in each layer from high to low.

4. The temperature regulating system for chemical production according to claim 3 is characterized in that: The temperature detection modules (5) of each layer are distributed at equal angles around the central axis of the reaction kettle (1).

5. The temperature regulating system for chemical production according to claim 1, characterized in that: The stirring device (2) comprises a lifting mechanism (204), a driving motor (201) and a stirring shaft (202); the lifting mechanism (204) is connected to the top of the reaction kettle (1); the driving motor (201) is connected to the lifting mechanism (204); one end of the stirring shaft (202) is connected to the output shaft of the driving motor (201); and the other end is connected to a plurality of stirring blades (203).

6. The temperature regulating system for chemical production according to claim 5, characterized in that: The stirring blades (203) are arranged in at least two layers along the stirring shaft (202).

7. The temperature regulating system for chemical production according to claim 5 or 6, characterized in that: At least two stirring blades (203) are provided on each layer, and the stirring blades (203) are distributed at equal angles around the stirring shaft (202).

8. The temperature regulating system for chemical production according to claim 5 or 6, characterized in that: The end of the stirring blade (203) is arranged to be inclined downward along the direction of the stirring shaft (202).

9. The temperature regulating system for chemical production according to any one of claims 1-2 and 4-6, characterized in that: The temperature detection module (5) is arranged in the gap between each layer of stirring blades (203).

10. The temperature regulating system for chemical production according to claim 1, characterized in that: A valve (6) is provided at the bottom of the reaction kettle (1).

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