CN116492971A - Esterification equipment capable of adjusting esterification reaction temperature - Google Patents
Esterification equipment capable of adjusting esterification reaction temperature Download PDFInfo
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- CN116492971A CN116492971A CN202310773913.6A CN202310773913A CN116492971A CN 116492971 A CN116492971 A CN 116492971A CN 202310773913 A CN202310773913 A CN 202310773913A CN 116492971 A CN116492971 A CN 116492971A
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- 238000005886 esterification reaction Methods 0.000 title claims abstract description 89
- 230000032050 esterification Effects 0.000 title claims abstract description 35
- 239000000463 material Substances 0.000 claims abstract description 64
- 238000002156 mixing Methods 0.000 claims abstract description 31
- 238000010438 heat treatment Methods 0.000 claims abstract description 15
- 238000001514 detection method Methods 0.000 claims description 42
- 238000003756 stirring Methods 0.000 claims description 27
- 238000005192 partition Methods 0.000 claims description 6
- 239000011364 vaporized material Substances 0.000 claims description 3
- 230000003071 parasitic effect Effects 0.000 claims description 2
- 239000002994 raw material Substances 0.000 abstract description 18
- 238000006243 chemical reaction Methods 0.000 abstract description 15
- 238000001931 thermography Methods 0.000 abstract description 4
- 230000008020 evaporation Effects 0.000 abstract 1
- 238000001704 evaporation Methods 0.000 abstract 1
- 239000000376 reactant Substances 0.000 description 8
- 238000005070 sampling Methods 0.000 description 6
- 238000007599 discharging Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 238000000926 separation method Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- 239000002826 coolant Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 238000007086 side reaction Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000004821 distillation Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 238000010025 steaming Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/18—Stationary reactors having moving elements inside
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/0006—Controlling or regulating processes
- B01J19/0013—Controlling the temperature of the process
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J2219/00049—Controlling or regulating processes
- B01J2219/00051—Controlling the temperature
- B01J2219/00054—Controlling or regulating the heat exchange system
- B01J2219/00056—Controlling or regulating the heat exchange system involving measured parameters
- B01J2219/00058—Temperature measurement
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J2219/00049—Controlling or regulating processes
- B01J2219/00051—Controlling the temperature
- B01J2219/00074—Controlling the temperature by indirect heating or cooling employing heat exchange fluids
- B01J2219/00076—Controlling the temperature by indirect heating or cooling employing heat exchange fluids with heat exchange elements inside the reactor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J2219/00049—Controlling or regulating processes
- B01J2219/00051—Controlling the temperature
- B01J2219/00074—Controlling the temperature by indirect heating or cooling employing heat exchange fluids
- B01J2219/00087—Controlling the temperature by indirect heating or cooling employing heat exchange fluids with heat exchange elements outside the reactor
- B01J2219/00094—Jackets
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
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- Chemical Kinetics & Catalysis (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
The invention relates to the technical field of esterification equipment, and discloses esterification equipment with an adjustable esterification reaction temperature, which comprises a kettle body and a mixing assembly arranged on the kettle body, wherein the mixing assembly is arranged along the height direction of the kettle body and is used for uniformly mixing esterification reaction materials in the kettle body, the kettle body comprises a heating part and a condensing part, the condensing part is arranged on one side of the kettle body close to the driving end of the mixing assembly, and the heating part comprises a jacket and an inner container. According to the invention, the inner side wall of the esterification equipment is provided with the heat conducting fin, different material interface temperature differences are detected through thermal imaging, the temperature difference is rapidly positioned to a region with the temperature difference through the built-in heat exchange frame, the region is rapidly compensated by using the compensation point, the compensation point is accurately positioned to the interface with the temperature difference by matching with the mixing component, the evaporation of raw materials is reduced, the esterification reaction is ensured to move towards the right side of the reaction balance of the esterification reaction in a preset temperature interval, and the efficiency of the esterification reaction is improved.
Description
Technical Field
The invention relates to the field of esterification equipment, in particular to esterification equipment capable of adjusting esterification reaction temperature.
Background
An esterification reactor is a device for esterification reactions, also known as an esterification reactor. It is generally composed of kettle body, heater, stirrer, heat exchanger, temp controller, pressure gauge and exhauster. The esterification reaction kettle is widely applied to esterification reaction processes in the industries of food, pharmacy, chemical industry and the like, and can effectively improve the quality and the yield of products.
The prior esterification reaction kettle is characterized in that a jacket is arranged outside the kettle body, a heat exchange medium is introduced into the jacket, materials in the kettle body are heated through the heat exchange medium, a spiral coil pipe is arranged in the kettle body, a cooling medium is arranged in the coil pipe, the cooling medium maintains the temperature of the materials to be constant within the reaction temperature range, a stirring structure downwards extends at the top of the kettle body and is used for accelerating the temperature uniformity of the materials, the jacket type reaction kettle conducts heat to the materials at the inner side of the kettle wall through the heat exchange medium, and the materials are rapidly mixed through the stirring structure.
However, when materials are mixed to generate esterification reaction, the materials are vaporized and distilled out due to vaporization of the esterification reactants and the raw materials, and when the materials are unevenly mixed in the distillation process, heat exchange occurs between the distilled out raw materials and the raw materials to be reacted, so that the temperature of the raw materials at different interfaces is different, the raw materials in a high-temperature area are vaporized and escaped quickly, the side reaction is generated due to the deficiency of the raw materials, the rightward movement degree of the reaction balance in the esterification reaction is influenced, and the efficiency of the esterification reaction is influenced.
Disclosure of Invention
The invention provides esterification equipment capable of adjusting esterification reaction temperature, which solves the technical problems that in the related art, temperature difference between different interfaces can occur, so that raw materials in a high-temperature area are vaporized and escaped quickly, side reactions are generated due to insufficient raw materials of an esterification reactant, the rightward movement degree of reaction balance in the esterification reaction is influenced, and the efficiency of the esterification reaction is influenced.
The invention provides esterification equipment capable of adjusting esterification reaction temperature, which comprises a kettle body and a mixing component arranged on the kettle body, wherein the mixing component is arranged along the height direction of the kettle body, the mixing component is used for uniformly mixing esterification reaction materials in the kettle body, the kettle body comprises a heating part and a condensing part, the condensing part is arranged on one side of the kettle body close to a driving end of the mixing component, the heating part comprises a jacket and an inner container, the jacket is sleeved on the outer side of the inner container, two sides of the jacket are respectively provided with a jacket heat exchange end which circulates circularly, the inner side wall of the inner container is provided with a temperature detection component, the detection end of the temperature detection component extends from the inner side of the jacket to the outer side of the kettle body, the temperature detection component is used for detecting temperature differences of different interfaces of the material in the kettle body along the height direction of the kettle body, the inner container is internally provided with a compensation component, and when the temperature detection component detects that the materials on the different interfaces of the inner container exist, the compensation component works through compensation points where the temperature differences exist, and the temperature differences on the material interfaces of the different heights are reduced;
the temperature detection assembly comprises a heat conducting sheet, an infrared image detection end and a heat shield, wherein one end of the heat shield is sleeved on the outer edge of the heat conducting sheet, the infrared image detection end is arranged at the other end of the heat shield and used for detecting infrared heat patterns of one side of the inner container, which is contacted with the heat conducting sheet, of a material, the heat conducting sheet is annularly arranged on the inner wall of the inner container, and the infrared image detection end can obtain temperature differences of the inner container on interfaces with different heights of the material through the detected infrared heat patterns.
Further, the compensation component comprises a heat exchange frame and a circulating tube group, the heat exchange frame is of a hollow structure, and the circulating tube group is inserted into the heat exchange frame.
Further, the mixing assembly comprises a driving motor and a stirring frame, the length direction of the stirring frame is consistent with the height direction of the kettle body, and an output shaft of the driving motor is connected with the end part of the stirring frame.
Further, one side of the heat exchange frame, which is close to the stirring frame, is provided with an avoidance part, and one side of the heat exchange frame, which is close to the avoidance part, is provided with a plurality of heat-resistant electric control valves.
Further, the heat exchange frame comprises a main rod and a heat conducting part, wherein the heat conducting part is vertically arranged on the rod end of the main rod and is used for carrying out temperature compensation on interfaces with different heights of materials.
Further, the circulating tube group comprises an input tube and an output tube, the input tube and the output tube are spirally combined, and the ends of the input tube and the output tube are communicated at the heat conducting part.
Further, the infrared image detection end comprises an infrared lens group, a filter disc, a correction baffle plate and an infrared detector, wherein the filter disc and the correction baffle plate are arranged between the infrared lens group and the infrared detector, the filter disc is used for filtering stray light waves except infrared light waves, and the correction baffle plate is used for guiding the infrared light waves to the detection end of the infrared detector.
Further, the top of the kettle body is provided with a feeding flange, and the bottom of the feeding flange extends into the heating part.
Further, the top end of the kettle body is also provided with an upper condensing flange, and the upper condensing flange is introduced with a heat exchange medium and condenses the vaporized materials in the condensing part.
Further, a partition plate is arranged between the heating part and the condensing part, a one-way film is arranged on the partition plate, and a discharging pipeline is arranged on one side of the condensing part.
A temperature regulation method for an esterification apparatus, comprising the steps of:
s1: acquiring a distribution image of a temperature field of the surface of a reactant in the reaction kettle during detection by using a thermal imaging technology;
s2: gridding the region with the difference value of the temperature distribution on the image according to pixel level, and combining all pixel points in each grid into a separation line of the temperature difference;
s3: spreading the heat conducting strips in the kettle body into a plane, and arranging and combining temperature difference separation lines of all pixel point combinations to form a material temperature zone;
s4: restoring the interface positions of inconsistent material temperature bands to be consistent through the compensation component, and acquiring temperature data after the material temperature bands in the materials in the reaction kettle are restored after fixed time intervals;
s5: through the combined action of temperature compensation of the compensation component and material mixing of the mixing component, the temperature difference in the material temperature zone is within +/-5 ℃, and the esterification reaction efficiency and the esterification reaction progress after the materials in the kettle body are uniformly mixed are ensured.
The invention has the beneficial effects that: the inside wall of the esterification equipment is provided with the heat conducting fin, different material interface temperature differences are detected through thermal imaging, the temperature difference areas are quickly positioned through the built-in heat exchange frame, the temperature difference areas are quickly compensated by the compensation points, the compensation points are accurately positioned to the temperature difference interfaces by matching with the mixing assembly, raw material steaming is reduced, the esterification reaction is ensured to move towards the right side of the reaction balance of the esterification reaction in a preset temperature interval, and the efficiency of the esterification reaction is improved.
Drawings
FIG. 1 is a schematic diagram of an esterification apparatus with an adjustable esterification temperature according to the present invention;
FIG. 2 is a front view of an esterification apparatus for regulating the temperature of an esterification reaction in accordance with the present invention;
FIG. 3 is a schematic view of the cross-sectional structure A-A of FIG. 2 in accordance with the present invention;
FIG. 4 is a schematic diagram of the structure of a compensation assembly of an esterification apparatus for adjusting the temperature of an esterification reaction according to the present invention;
FIG. 5 is a schematic diagram of a temperature detecting assembly of an esterifying apparatus with adjustable esterification temperature according to the present invention;
FIG. 6 is a graph showing the effect of the compensation point of the heat exchange frame of the esterification apparatus and the detection of the temperature detection assembly (A, C in the figure represents a high temperature region, and B represents a low temperature region) with the temperature adjustment of the esterification reaction temperature;
FIG. 7 is a schematic partial cross-sectional view of a kettle body of an esterification apparatus with an adjustable esterification reaction temperature in accordance with the present invention.
In the figure: 100. a kettle body; 110. a heating section; 111. a jacket; 112. an inner container; 120. a condensing unit; 130. a discharging valve; 200. a jacket heat exchange end; 300. a feed flange; 400. an upper condensing flange; 500. a mixing assembly; 510. a stirring rack; 600. a sampling flange; 700. a compensation component; 710. a heat exchange frame; 711. a heat conduction part; 712. a heat-resistant electric control valve; 713. a main rod; 720. a circulation tube group; 721. an input tube; 722. an output pipe; 800. a temperature detection assembly; 810. a heat conductive sheet; 820. a heat shield; 830. an infrared lens group; 840. a filter sheet; 850. correcting the baffle; 860. an infrared detector.
Detailed Description
The subject matter described herein will now be discussed with reference to example embodiments. It is to be understood that these embodiments are merely discussed so that those skilled in the art may better understand and implement the subject matter described herein and that changes may be made in the function and arrangement of the elements discussed without departing from the scope of the disclosure herein. Various examples may omit, replace, or add various procedures or components as desired. In addition, features described with respect to some examples may be combined in other examples as well.
Example 1
Referring to fig. 1-7, an esterification device capable of adjusting esterification reaction temperature comprises a kettle body 100 and a mixing component 500 arranged on the kettle body 100, wherein the mixing component 500 is arranged along the height direction of the kettle body 100, the mixing component 500 is used for uniformly mixing esterification reaction materials in the kettle body 100, the kettle body 100 comprises a heating part 110 and a condensing part 120, the condensing part 120 is arranged on one side of the kettle body 100 close to the driving end of the mixing component 500, the heating part 110 comprises a jacket 111 and an inner container 112, the jacket 111 is sleeved on the outer side of the inner container 112, both sides of the jacket 111 are respectively provided with a circulating jacket heat exchange end 200, the jacket heat exchange ends 200 are respectively arranged on the upper side and the lower side of the two sides of the kettle body 100, heat exchange media are input from the jacket heat exchange end 200 on the lower side, the jacket heat exchange ends 200 on the upper side are used for outputting the heat exchange media, the inner side wall of the inner container 112 is provided with a temperature detection component 800, the detection end of the temperature detection component 800 extends from the inner side of the jacket 111 to the outer side of the kettle body 100, the temperature detection component 800 is used for detecting the temperature difference of materials in the kettle body 100 along different interfaces in the height direction of the kettle body 100, the inner container 700 is arranged at different temperature compensation points of the inner container 700, and the temperature compensation component 700 is arranged at different temperature compensation interface temperature compensation points of the inner container 700 are arranged at different temperature compensation interface temperature compensation components 700 in the height direction of the inner container 100;
the temperature detection assembly 800 comprises a heat conducting sheet 810, an infrared image detection end and a heat shield 820, wherein one end of the heat shield 820 is sleeved outside the heat conducting sheet 810, the infrared image detection end is arranged at the other end of the heat shield 820 and is used for detecting infrared heat patterns of one side of the material in the inner container 112, which is contacted with the heat conducting sheet 810, the heat conducting sheet 810 is annularly arranged on the inner wall of the inner container 112, and the infrared image detection end can obtain temperature differences of the material in the inner container 112 on interfaces with different heights through the detected infrared heat patterns.
The compensating assembly 700 includes a heat exchange frame 710 and a circulation tube group 720, the heat exchange frame 710 is of a hollow structure, and the circulation tube group 720 is inserted into the heat exchange frame 710.
The mixing assembly 500 comprises a driving motor and a stirring frame 510, the length direction of the stirring frame 510 is consistent with the height direction of the kettle body 100, an output shaft of the driving motor is connected with the end part of the stirring frame 510, a plurality of stirring blades are arranged on the stirring frame 510, an avoidance part is arranged on one side, close to the stirring frame 510, of the heat exchange frame 710, a plurality of heat-resistant electric control valves 712 are arranged on one side, close to the avoidance part, of the heat exchange frame 710, and the number of the avoidance parts is consistent with that of the stirring blades.
As shown in fig. 4, the heat exchange frame 710 includes a main rod 713 and a heat conducting portion 711, the heat conducting portion 711 is vertically installed on a rod end of the main rod 713, the heat conducting portion 711 is used for performing temperature compensation on interfaces with different heights of materials, the heat exchange frame 710 has an "E" structure, as shown in fig. 7, specifically, the cross section of the heat conducting portion 711 is distributed in an annular array, so that temperature compensation can be performed on different interfaces;
the heat exchange frame 710 is matched with the stirring frame 510, and when the stirring frame 510 stirs mixed raw materials, the heat exchange frame 710 plays an auxiliary role to accelerate collision and mixing of the raw materials;
the circulation tube group 720 includes an input tube 721 and an output tube 722, the input tube 721 and the output tube 722 are spirally combined, the ends of the input tube 721 and the output tube 722 are communicated with each other at the heat conducting portion 711, and the ends of the input tube 721 are connected with a heat source or a cold source;
as shown in fig. 5, the infrared image detection end includes an infrared lens set 830, a filter plate 840, a correction baffle 850 and an infrared detector 860, the filter plate 840 and the correction baffle 850 are disposed between the infrared lens set 830 and the infrared detector 860, the filter plate 840 is used for filtering parasitic light waves other than infrared light waves, the correction baffle 850 is used for guiding the infrared light waves to the detection end of the infrared detector 860, the detection end of the infrared detector 860 is connected to an upper computer, and the upper computer outputs an infrared heat map after processing.
It is to be added that the top of the kettle body 100 is provided with a feeding flange 300, the bottom end of the feeding flange 300 extends into the heating part 110, the top of the kettle body 100 is also provided with an upper condensing flange 400, the upper condensing flange 400 is introduced with a heat exchange medium and condenses vaporized materials in the condensing part 120, a partition plate is arranged between the heating part 110 and the condensing part 120, a unidirectional film is arranged on the partition plate, and one side of the condensing part 120 is provided with a discharge pipeline.
It is also to be added that a sampling flange 600 is installed at one side of the kettle body 100, the end of the sampling flange 600 extends to the liner 112, the sampling flange 600 is provided with a valve body, and the sampling flange 600 is used for sampling the mixed material, so that the degree of the esterification reaction can be conveniently detected.
It should be further added that a discharging valve 130 is disposed at the bottom end of the kettle body 100, the end of the discharging valve 130 extends to the bottom end of the liner 112 through a pipeline, and the discharging valve 130 is used for releasing residues and reaction products of the esterification reaction;
when the esterification equipment is used, raw materials required by esterification reaction are input through the feed flange 300, a heat exchange medium is input into the upper condensing flange 400, the vaporized mixed raw materials and the esterified raw materials are condensed, condensed and reflowed to be collected on the unidirectional film, and then the esterified products and the vaporized raw materials are output through the discharge pipeline and separated;
as the heat exchange medium is input into the jacket heat exchange end 200, the inner liner 112 in the jacket 111 is heated, raw materials can be heated, the materials in the inner liner 112 are stirred and mixed uniformly through the stirring frame 510, the heat exchange medium is input through the input pipe 721, the internal materials are heated, after the internal materials are heated to a constant temperature by matching with the rapid stirring of the stirring frame 510, the internal materials are continuously heated through the jacket 111, the cold source is input through the input pipe 721, and the redundant heat emitted in the esterification reaction is neutralized;
when the temperature is continuously regulated through the heat exchange frame 710, the temperature detection assembly 800 is required to be matched, the heat conducting fins 810 in the temperature detection assembly 800 are attached to the inner container 112, the infrared light waves of the heat conducting fins 810 are received into the infrared mirror group 830 through the heat insulation cover 820 corresponding to the temperatures of different interfaces of materials in the inner container 112, the infrared light waves are processed through the filter sheet 840 and the correction baffle 850 and then are input into the infrared detector 860, the infrared detector 860 forms an infrared heat map through an upper computer, the heat conducting fins 810 are annularly arranged on the inner wall of the inner container 112, the infrared image detection end can obtain the temperature difference of the interfaces of different heights of the materials in the inner container 112 through a group of detected infrared heat maps, in order to balance the temperature difference between the different interfaces, the input pipe 721 at one end of the main rod inputs a heat source or a cold source, adjusts the temperature at the interface, accurately positions a compensation point to the interface 713 with the temperature difference, reduces the output of raw materials, and ensures that the esterification reaction moves towards the right side of the reaction balance of the esterification reaction in a preset temperature range;
the multiple interfaces in the kettle body 100 may be further provided with temperature sensors, and the temperature sensors are not described in detail in the prior art, so that the temperature sensors are used for detecting the average temperatures of different interfaces, and are easier to locate to the approximate direction of the interface with the temperature difference in the kettle body 100, so that the accuracy of temperature compensation of the heat exchange frame 710 at the position is improved, and the temperature of the materials tends to a temperature value within a preset range by matching with the stirring and mixing action of the stirring frame 510 in the mixing assembly 500;
the temperature difference in different interfaces is within +/-5 ℃, so that the esterification reaction efficiency and the esterification reaction progress after materials in the kettle body 100 are uniformly mixed are ensured.
Example two
The temperature adjusting method for the esterification equipment is applied to the esterification equipment with adjustable esterification reaction temperature, and is used for adjusting the temperature of materials in the kettle body 100, and specifically comprises the following steps:
s1: acquiring a distribution image of a temperature field of the surface of a reactant in the reaction kettle during detection by using a thermal imaging technology;
s2: gridding the region with the difference value of the temperature distribution on the image according to pixel level, and combining all pixel points in each grid into a separation line of the temperature difference;
s3: the heat conducting fins 810 arranged in the kettle body 100 are unfolded into a plane, and temperature difference separation lines of all pixel point combinations are arranged and combined to form a material temperature zone;
s4: restoring the interface positions where the material temperature bands are inconsistent to be consistent through the compensation assembly 700, and acquiring temperature data after the material temperature bands in the materials in the reaction kettle are restored after fixed time intervals;
it should be noted that, as shown in fig. 6, when the temperature of the middle material temperature zone is lower than the temperatures of the upper and lower material temperature zones, a heat source is required to be input through the input pipe 721 at one end of the main rod 713 to raise the temperature of the material temperature zone to be consistent with the high temperature zone, and conversely, when the temperature of the middle material temperature zone is higher than the temperatures of the upper and lower material temperature zones, a cold source is required to be input through the input pipe 721 at one end of the main rod 713 to lower the temperature of the material temperature zone to be consistent with the low temperature zone;
s5: the temperature compensation of the compensation component 700 and the material mixing of the stirring frame 510 are combined to ensure that the temperature of the materials in the kettle body 100 is uniform, the temperature difference in the temperature zone of the materials is within +/-5 ℃, and the esterification reaction efficiency and the esterification reaction progress after the materials in the kettle body 100 are uniformly mixed are ensured;
it should be noted that, the material temperature in the material temperature zone is maintained in the preset esterification reaction temperature range, so that the rightward movement of the reaction balance of the esterification reaction is effectively ensured, specifically, the reaction rate is increased due to the increase of the thermal movement of molecules, reactant molecules are easier to collide and react, but excessive heat energy of reactants can decompose the reactant molecules more easily, so that the concentration of the reactant is increased, the reaction is promoted to move towards the product direction, and the rightward movement degree of the reaction balance of the esterification reaction and the efficiency of the esterification reaction can be promoted by stabilizing the material temperature zone in the esterification reaction equipment.
The embodiment has been described above with reference to the embodiment, but the embodiment is not limited to the above-described specific implementation, which is only illustrative and not restrictive, and many forms can be made by those of ordinary skill in the art, given the benefit of this disclosure, are within the scope of this embodiment.
Claims (10)
1. The utility model provides an esterification equipment of adjustable esterification reaction temperature, including the cauldron body (100) and locate mixing element (500) on the cauldron body (100), mixing element (500) are along the high direction setting of cauldron body (100), mixing element (500) are used for evenly mixing the esterification reaction material in the cauldron body (100), a serial communication port, the cauldron body (100) include heating portion (110) and condensing part (120), one side that the drive end of cauldron body (100) is close to mixing element (500) is located in condensing part (120), heating portion (110) include clamp cover (111) and inner bag (112), the outside of inner bag (112) is located to clamp cover (111) cover, the both sides of clamp cover (111) all are equipped with circulation clamp cover heat exchange end (200), the inside wall of inner bag (112) is equipped with temperature detection component (800), the detection end of temperature detection component (800) extends to the outside of cauldron body (100) from clamp cover (111), temperature detection component (800) are used for detecting the material temperature difference in the inside of cauldron body (100) along the high direction of cauldron body (100), the temperature compensation component (700) are equipped with the temperature compensation component (700) in the high-temperature compensation interface of internal interface (700) on the high-temperature compensation component (100), when the temperature detection component (800) detects that the temperature difference exists among materials on interfaces with different heights in the inner container (112), the compensation component (700) reduces the temperature difference among the materials on the interfaces with different heights through the operation of a compensation point at the position where the temperature difference exists;
the temperature detection assembly (800) comprises a heat conducting sheet (810), an infrared image detection end and a heat shield (820), wherein one end of the heat shield (820) is sleeved outside the heat conducting sheet (810), the infrared image detection end is arranged at the other end of the heat shield (820), the infrared image detection end is used for detecting an infrared heat map of one side of a material in the inner container (112) which is contacted with the heat conducting sheet (810), the heat conducting sheet (810) is annularly arranged on the inner wall of the inner container (112), and the infrared image detection end can obtain temperature differences on interfaces of different heights of the material in the inner container (112) through the detected infrared heat maps.
2. The esterification apparatus according to claim 1, wherein the compensation assembly (700) comprises a heat exchange frame (710) and a circulation tube group (720), the heat exchange frame (710) is of a hollow structure, and the circulation tube group (720) is inserted into the heat exchange frame (710).
3. The esterification apparatus according to claim 2, wherein the mixing assembly (500) comprises a driving motor and a stirring frame (510), the length direction of the stirring frame (510) is consistent with the height direction of the kettle body (100), and an output shaft of the driving motor is connected with an end of the stirring frame (510).
4. An esterification apparatus with adjustable esterification reaction temperature according to claim 3, characterized in that a side of the heat exchange frame (710) close to the stirring frame is provided with an avoiding part, and a side of the heat exchange frame (710) close to the avoiding part is provided with a plurality of heat-resistant electric control valves (712).
5. The esterification apparatus with adjustable esterification reaction temperature according to claim 4, wherein the heat exchange frame (710) comprises a main rod (713) and a heat conducting part (711), the heat conducting part (711) is vertically installed on the rod end of the main rod (713), and the heat conducting part (711) is used for temperature compensation of interfaces with different heights of materials.
6. The esterifying apparatus with adjustable esterifying temperature according to claim 5, wherein the circulating tube group (720) comprises an input tube (721) and an output tube (722), the input tube (721) and the output tube (722) are spirally combined, and the ends of the input tube (721) and the output tube (722) are communicated at the heat conducting part (711).
7. The esterification apparatus according to claim 6, wherein the infrared image detection end comprises an infrared lens assembly (830), a filter plate (840), a correction baffle (850) and an infrared detector (860), the filter plate (840) and the correction baffle (850) are disposed between the infrared lens assembly (830) and the infrared detector (860), the filter plate (840) is configured to filter parasitic light waves other than infrared light waves, and the correction baffle (850) is configured to guide the infrared light waves to the detection end of the infrared detector (860).
8. The esterification apparatus with adjustable esterification reaction temperature according to claim 1, wherein a feeding flange (300) is provided at the top end of the kettle body (100), and the bottom end of the feeding flange (300) extends into the heating part (110).
9. The esterification apparatus with adjustable esterification reaction temperature according to claim 1, wherein an upper condensing flange (400) is further provided at the top end of the kettle body (100), and the upper condensing flange (400) is introduced with a heat exchange medium and condenses the vaporized material in the condensing portion (120).
10. The esterification apparatus with adjustable esterification reaction temperature according to claim 1, wherein a partition plate is arranged between the heating part (110) and the condensing part (120), a unidirectional film is arranged on the partition plate, and a discharge pipeline is arranged at one side of the condensing part (120).
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| CN116492971B (en) | 2023-09-08 |
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