Microwave reaction kettle suitable for solid reaction materials

Abstract

The utility model relates to the technical field of industrial reactors, in particular to a microwave reaction kettle suitable for solid reaction materials. The microwave reaction kettle comprises a reaction kettle body, a microwave unit, a circulating pipeline and layered partitions, the circulating pipeline is connected to one side of the reaction kettle body in series and provided with a circulating pump, a premixing cylinder is arranged at the front end of the reaction kettle body, the microwave unit is arranged on the outer wall of the reaction kettle body and / or the circulating pipeline, and the layered partitions are arranged in the reaction kettle body in a layered mode. And the layered partitions on the upper and lower layers are provided with circulating channels, so that reaction materials can flow from top to bottom under the action of a circulating pump. According to the utility model, stirring paddles in a traditional reaction kettle are replaced by layered partitions, so that solid reaction materials are distributed more uniformly in a vertical space in the kettle, and the materials can react more quickly and fully.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of industrial reactor, concretely to a microwave reaction kettle suitable for containing solid reaction materials. BACKGROUND

[0002] Microwave heating is the conversion process of electromagnetic energy to heat energy, and its heating principle is that microwaves do not consume energy when passing through insulating materials such as ceramics and glass, but will be reflected and cannot pass through when encountering metal materials. The microwaves act on the reaction material wrapped in metal, and the molecular polarity of the reaction material changes constantly through microwave alternation, generating a large amount of friction heat in the process of change, causing the reaction material to heat up rapidly.

[0003] As a common microwave reaction container, the microwave reaction kettle mainly adopts the following two microwave arrangement modes: one is as described in Chinese patent document CN113634210A, the microwave generator is arranged on the side wall of the kettle body, and a stirring paddle is arranged in the kettle to heat the reaction material in the kettle while stirring. Another is as described in Chinese patent document CN101063077A, which connects a microwave reactor in parallel with a conventional kettle-type reactor, used for microwave heating of the reaction material and catalyst in the kettle-type reactor, and a circulating pump is arranged between the kettle-type reactor and the microwave reactor for forced circulation of the reaction material and catalyst in the kettle-type reactor and the microwave reactor. On the basis of the stirring and mixing action of the kettle-type reactor, the circulation of the material in the circulation loop is strengthened, thereby enhancing the full mixing of the materials to improve the reaction efficiency and conversion rate.

[0004] Generally, the stirring paddle in the reaction kettle needs to be continuously stirred to evenly distribute the solid material in the reaction kettle to facilitate the full reaction. However, when the reaction material contains solid material, simple stirring cannot ideally solve the stratified distribution of solid material in the liquid reaction environment. UTILITY MODEL CONTENTS

[0005] The utility model aims to overcome the shortcomings of the prior art and provide a microwave reaction kettle suitable for containing solid reaction materials, so that the solid reaction material can be relatively evenly distributed in the liquid reaction environment in the kettle.

[0006] In order to achieve the above-mentioned purpose, the technical scheme of the utility model is as follows:

[0007] The microwave reaction kettle suitable for containing solid reaction materials comprises

[0008] The reaction kettle provides a reaction space for material reaction, and the top and bottom are respectively provided with a material inlet and a material outlet;

[0009] The microwave unit is used for heating the reaction material;

[0010] A circulation pipeline is connected in series on one side of the reactor and is provided with a circulating pump for circulating the reaction materials in the lower layer of the reactor to the upper layer of the reactor.

[0011] Further comprising

[0012] A plurality of layered partitions are arranged in layers in the interior of the reactor, the layered partitions in the upper and lower layers have flow-through channels so that the reaction materials can flow from top to bottom under the action of the circulating pump; the microwave units are arranged on the outer wall of the reactor and / or the circulation pipeline.

[0013] The inventive concept of the present application is that, for a liquid reaction environment containing solid reaction materials, by additionally arranging layered partitions in the reactor, the interior space of the reactor is divided into a plurality of upper and lower layers, and the materials can only flow from top to bottom through the flow-through channels, which is beneficial to increase the residence time of the solid reaction materials in the upper part of the reactor and make them collide with each other after being heated. Under the same circulating pump power, the distribution of the solid reaction materials between the upper and lower layers in the reactor is more uniform, and the solid reaction materials will not quickly deposit to the bottom of the reactor, so as to promote the reaction to be carried out more quickly and more fully.

[0014] As an improvement, the microwave reactor further comprises a corrosion-resistant lining arranged on the inner wall of the reactor, and the layered partitions are made of corrosion-resistant wave-transparent materials. The corrosion-resistant lining makes the microwave reactor suitable for a reaction environment containing corrosive reaction solvents.

[0015] As a further improvement, the reactor is composed of a reactor body and a reactor cover, the corrosion-resistant lining corresponds to the inner wall of the reactor in shape, the corrosion-resistant lining is composed of a lining body and a lining cover, and the joint between the lining body and the lining cover is sealed by a tetrafluoroethylene pad. The reactor and the corrosion-resistant lining are both arranged in two sections, which is beneficial to the installation and maintenance of the corrosion-resistant lining.

[0016] As an improvement, the microwave reactor further comprises a premixing cylinder for premixing the reaction materials, which is internally provided with a stirring paddle and is arranged separately from the reactor and is in communication with the material inlet of the reactor at the bottom. In order to improve the smoothness of the feeding of the microwave reactor, the reaction materials are preferably uniformly mixed outside the reactor and then uniformly input into the reactor.

[0017] As a further improvement, the premixing cylinder and the stirring paddle are made of corrosion-resistant materials to adapt to corrosive reaction solvents.

[0018] As an improvement, the layered partitions are arranged in parallel in the interior of the reactor, and the flow-through channels are through holes formed in the layered partitions.

[0019] As a further improvement, the edges of the flow-through channels are provided with raised portions in the form of circular rings, which is beneficial to increase the residence time of the solid reaction materials in the corresponding layers.

[0020] Alternatively, the layered baffles are arranged in the interior of the reactor, and the gap between one side of the layered baffles and the inner wall of the reactor forms the flow channel.

[0021] As a further improvement, the upper surface of the flow channel is provided with a raised portion in the form of a convex stripe.

[0022] As a further improvement, the number of the layered baffles is 2-3 layers, and each layer is fixed to each other, and the interior of the reactor is provided with a baffle support portion so that the layered baffles can be suspended in the middle part of the reactor. The layered baffles are in one piece, which is beneficial to installation and maintenance.

[0023] The beneficial effects of the utility model are that the stirring paddle in the traditional reactor is replaced by the layered baffles, and the material can only flow from top to bottom through the flow channel, so that the distribution of the solid-state reaction material in the vertical space in the reactor is more uniform, which is beneficial to the rapid and sufficient reaction of the material. Secondly, compared with the prior art, the energy consumption of the original stirring paddle in the reactor is also saved. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 It is a structural schematic view of the utility model embodiment 1;

[0025] Figure 2 It is a sectional view of the premixing cylinder in the utility model embodiment 1;

[0026] Figure 3 It is a sectional view of the reactor in the utility model embodiment 1;

[0027] Figure 4 It is Figure 3 It is a structural schematic view of the layered baffle in the utility model;

[0028] Figure 5 It is a structural schematic view of the layered baffle in the utility model embodiment 2;

[0029] Figure 6 It is a structural schematic view of the layered baffle in the utility model embodiment 3.

[0030] In the drawing: 10, reactor; 11, material inlet; 12, material outlet; 20, micro unit; 30, circulating pipeline; 31, circulating pump; 40, layered baffle; 41, flow channel; 42, raised portion; 50, anticorrosive lining; 60, tetrafluoroethylene pad; 70, premixing cylinder; 80, stirring paddle; 90, baffle support portion. DETAILED DESCRIPTION

[0031] The utility model will be further described below in conjunction with specific embodiments. It should be understood that these embodiments are only used to illustrate the utility model and not to limit the scope of the utility model. In addition, it should be understood that after reading the content taught by the utility model, those skilled in the art can make various changes or modifications to the utility model, and these equivalent forms also fall within the scope defined by the claims attached to the present application. Embodiment 1

[0032] As shown in Figure 1 , Figure 2 The microwave reactor for containing solid reaction materials described in the present application is provided with a premixing cylinder 70 for premixing reaction materials at the front end of the reactor 10, the premixing cylinder 70 is provided separately from the reactor 10, is provided with an agitator 80 inside, has a feeding port at the top and a discharging port at the bottom. The solid reaction materials after crushing and the liquid reaction materials are all fed into the premixing cylinder 70 from the feeding port, are mixed by the agitator 80, and are then discharged from the bottom discharging port and fed into the reactor 10. The top of the reactor 10 is provided with a material inlet 11, and the discharging port of the premixing cylinder 70 is communicated with the material inlet 11 of the reactor 10. The premixing cylinder 70 is made of ceramic material, and the agitator 80 is made of tetrafluoroethylene material, so that the premixing cylinder 70 can adapt to corrosive reaction environment.

[0033] The outer wall of the reactor 10 is arranged with a microwave unit 20 for heating reaction materials. As an obvious deformation, the microwave unit 20 can also be arranged on the outer wall of the circulating pipeline 30 or only on the outer wall of the circulating pipeline 30.

[0034] One side of the reactor 10 is provided with a circulating pipeline 30, and the circulating pipeline 30 is provided with a circulating pump 31 for circulating the reaction materials in the lower layer of the reactor 10 to the upper layer of the reactor 10. The circulating pump 31 is a diaphragm pump.

[0035] As shown in Figure 3 , the reactor 10 is composed of a reactor body and a reactor cover, both of which are made of metal material. The inner wall of the reactor 10 is arranged with a corrosion-resistant lining 50, the shape of the corrosion-resistant lining 50 corresponds to the inner wall of the reactor 10, the corrosion-resistant lining 50 is composed of a lining body and a lining cover, and the joint between the lining body and the lining cover is sealed by a tetrafluoroethylene pad 60. The corrosion-resistant lining 50 is made of ceramic material, which is wear-resistant and can also transmit microwaves. The bottom of the reactor 10 is provided with a material outlet 12, and the materials after reaction are discharged from the material outlet 12 out of the reactor 10.

[0036] The inside of the reactor 10 is provided with a layered partition 40, which is also made of ceramic material, and its structure is as shown in Figure 4As shown. The number of layered baffles 40 is two layers, one above the other and parallel to the other. The layers are fixed to each other by side walls. A baffle support portion 90 is provided inside the reactor 10. The baffle support portion 90 is a boss formed at the bottom of the anti-corrosion lining 50, so that the layered baffles 40 can be placed thereon and suspended in the middle part of the reactor 10. The two layers of layered baffles 40 divide the internal space of the reactor 10 into three layers of substantially equal volume, namely, upper, middle and lower layers. A circulation channel 41 is provided on the layered baffles 40. The circulation channel 41 is a through hole. Each layered baffle 40 is provided with two through holes. A raised portion 42 is provided at the edge of the through hole. The raised portion 42 is annular. Under the action of the circulation pump 31, the reaction material continuously flows from the upper layer of the reactor 10 to the lower layer through the circulation channel 41, and then realizes circulation through the circulation pipeline 30. The arrangement of the layered baffles 40 and the raised portion 42 makes the solid reaction material relatively evenly distributed in the vertical space of the reactor 10. Example 2

[0037] like Figure 5 As shown, the difference between this embodiment and embodiment 1 is that:

[0038] The layered partition 40 comprises two independent upper and lower layers. The layered partition 40 can be fixed to the inner wall of the anti-corrosion lining 50 by ceramic screws. Example 3

[0039] like Figure 6 As shown, the difference between this embodiment and embodiment 2 is that: two layered partitions 40 are arranged vertically inside the reactor 10, and the gap between one side of the layered partition 40 and the inner wall of the reactor 10 forms a flow channel 41. The upper and lower flow channels 41 are staggered left and right, and the raised portion 42 provided on the upper surface of the layered partition 40 is in the shape of a raised stripe.

Claims

1. A microwave reactor suitable for containing a solid reactant material, characterised in that: Comprising a reaction kettle (10) for providing a reaction space for reaction of materials, a material inlet (11) and a material outlet (12) being arranged at the top and the bottom of the reaction kettle (10) respectively; a micro-pump unit (20) for heating the reaction materials; a circulation pipeline (30) connected in series with one side of the reaction kettle (10) and provided with a circulation pump (31), for circulating the reaction materials in the lower layer of the reaction kettle (10) to the upper layer of the reaction kettle (10); characterized in that it further comprises a plurality of layered partitions (40) arranged in layers in the interior of the reaction kettle (10), the layered partitions (40) in the upper and lower layers having flow-through channels (41) to enable the reaction materials to flow from the upper layer to the lower layer under the action of the circulation pump (31); and the micro-pump unit (20) being arranged on the outer wall of the reaction kettle (10) and / or the circulation pipeline (30).

2. The microwave reactor according to claim 1, wherein the microwave reactor is adapted to contain a solid reactant material. further comprising a corrosion-resistant inner lining (50) arranged on the inner wall of the reaction kettle (10); the layered partitions (40) being made of a corrosion-resistant wave-transparent material.

3. The microwave reactor according to claim 2, wherein the microwave reactor is adapted to contain a solid reactant material. the reaction kettle (10) being composed of a kettle body and a kettle cover, the corrosion-resistant inner lining (50) corresponding in shape to the inner wall of the reaction kettle (10), the corrosion-resistant inner lining (50) being composed of an inner lining body and an inner lining cover, the joint between the inner lining body and the inner lining cover being sealed by a tetrafluoroethylene pad (60).

4. The microwave reactor for containing solid reactant materials as claimed in claim 1 wherein: further comprising a premixing cylinder (70) for premixing the reaction materials, the premixing cylinder (70) being internally provided with a stirring paddle (80) and being arranged separately from the reaction kettle (10), the bottom of the premixing cylinder (70) being in communication with the material inlet (11) of the reaction kettle (10).

5. The microwave reactor for containing solid reactant materials as claimed in claim 4 wherein: the premixing cylinder (70) and the stirring paddle (80) being made of a corrosion-resistant material.

6. The microwave reactor for containing solid reactant materials as claimed in claim 1 or 2, wherein: the layered partitions (40) being arranged in parallel in the interior of the reaction kettle (10), the flow-through channels (41) being through-holes formed in the layered partitions (40).

7. The microwave reactor according to claim 6, wherein the microwave reactor is adapted to contain a solid reactant material. the edges of the flow-through channels (41) being provided with raised portions (42), the raised portions (42) being in the form of a circular ring.

8. The microwave reactor for containing solid reactant materials as claimed in claim 1 or 2 wherein: the layered partitions (40) being arranged in layers in the interior of the reaction kettle (10), the gap between one side of the layered partitions (40) and the inner wall of the reaction kettle (10) forming the flow-through channels (41).

9. The microwave reactor according to claim 8, wherein the microwave reactor is adapted to contain a solid reactant material. the upper surface of the flow-through channels (41) being provided with raised portions (42), the raised portions (42) being in the form of raised stripes.

10. The microwave reactor for containing solid reactant materials as claimed in claim 1 wherein: the number of the layered partitions (40) being 2-3 layers, the layers being fixed to each other, the interior of the reaction kettle (10) being provided with partition support portions (90) to enable the layered partitions (40) to be suspended in the middle part of the reaction kettle (10).

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