A continuous multi-stage chlorination reaction device and method

Abstract

The invention relates to the technical field related to chlorination reaction, and discloses a continuous multi-stage chlorination reaction device and method. The device comprises a primary reactor, a secondary reactor and a tertiary reactor. A feed port is arranged at the upper end of the primary reactor, a catalyst cartridge is fixedly arranged at the upper end of the primary reactor, the interior of the catalyst cartridge is connected with the interior of the primary reactor and is provided with a feed pipe, a circulation component is arranged on one side of the exterior of the primary reactor, a cooling component is arranged in the inner wall of the primary reactor, and a stirring component is arranged on the lower side of the interior of the primary reactor. The invention can rotate a first movable component and a second movable component to make chlorine gas to be sprayed in a rotational diffusion manner, increase the contact area between chlorine gas and materials, and make chlorine gas evenly distributed in the materials; and further increase the contact area between chlorine gas and materials by rotating the first movable component and the second movable component to move closer to each other and away from each other, so that chlorine gas is evenly distributed in the primary reactor.

Description

Technical Field

[0001] The present invention belongs to the technical field related to chlorination reaction, and more specifically, particularly relates to a continuous multi-stage chlorination reaction device and method. Background Art

[0002] Chlorination reaction generally refers to the reaction of introducing chlorine into a compound. In organic chemical reactions, chlorination reactions generally include displacement chlorination, addition chlorination and oxidation chlorination; in the metallurgical industry, the use of chlorine or chlorides to refine certain metals is also called chlorination; the process of adding chlorine or chlorine oxides to water to achieve oxidation and disinfection is also called chlorination. However, the chlorination reaction in the prior art has the following defects:

[0003] In the prior art, chlorination reaction devices are all carried out in a reactor with a stirring component. During the production process, chlorine gas must be introduced into the reactor, and the introduced chlorine gas is required to be fully mixed with the raw materials in the reactor to ensure that the chlorination reaction is carried out evenly and effectively. The most common way to pass chlorine in the chlorination reactor is to directly pass chlorine through a pipe without using a distributor, which results in uneven distribution of chlorine gas in the material, insufficient chlorination reaction, and a large amount of tail chlorine.

[0004] In the prior art, the stirring assembly and the chlorine distribution assembly in the chlorination reaction device are arranged separately and cannot cooperate with each other, which makes it difficult to diffusely distribute the chlorine, resulting in a small contact area between the chlorine and the material, insufficient reaction, and low production efficiency; at the same time, the chlorine introduced into the material is not completely reacted and gathers at the upper part of the reactor, which further reduces the contact area with the liquid and reduces the reaction efficiency.

[0005] In the prior art, the mixing degree of chlorine in the chlorination reaction device still depends on the stirring time and the stirring intensity, so the structure of the stirring component is usually improved to promote the full contact between chlorine and materials; however, the current structure of the stirring component is relatively simple, and it is difficult to expand the contact area between chlorine and materials according to demand, which affects the efficiency of the chlorination reaction.

[0006] Therefore, in view of this, the existing structure and defects are studied and improved, and a continuous multi-stage chlorination reaction device and method are provided, in order to achieve a more practical and valuable purpose. Summary of the invention

[0007] The present invention provides a continuous multi-stage chlorination reaction device and method, which are used to overcome the above-mentioned defects in the prior art.

[0008] The purpose and effect of the continuous multi-stage chlorination reaction device and method of the present invention are achieved by the following specific technical means:

[0009] A continuous multi-stage chlorination reaction device, comprising a primary reactor, a secondary reactor, and a tertiary reactor, wherein a first connecting pipe is provided between the upper part of the primary reactor and the lower part of the secondary reactor, a second connecting pipe is provided between the upper part of the secondary reactor and the lower part of the tertiary reactor, a feed port is provided at the upper end of the primary reactor, a catalyst cartridge is fixedly provided at the upper end of the primary reactor, the interior of the catalyst cartridge is connected to the interior of the primary reactor and a feed pipe is provided, a circulation component is provided on one side of the exterior of the primary reactor, a cooling component is provided in the inner wall of the primary reactor, a stirring component is provided on the lower side of the interior of the primary reactor, and a feed cylinder is provided at the lower end of the primary reactor; the stirring component comprises a fixed cylinder, the fixed cylinder is fixed The first-stage reactor is fixed at the lower inner side of the first-stage reactor, the first-stage reactor is provided with a rotating shaft for rotation inside, a sleeve is sleeved on the lower outer wall of the rotating shaft, a disc is fixedly provided on the upper outer wall of the sleeve, a plurality of first stirring plates are fixedly provided on the outer wall of the disc, a T-shaped rod is slidably provided inside each of the first stirring plates, a second stirring plate is fixedly provided at one end of each of the T-shaped rods, a first movable component is provided on the upper side of each of the first stirring plates, and a second movable component is provided on the upper side of the second stirring plate; the first movable component includes a first movable seat and a first T-block, one side of the lower end of the first movable seat is rotatably connected to the upper side of the first stirring plate, the first T-block slides inside the first movable seat, and a plurality of first spray valves are provided on the first T-block.

[0010] A further technical solution is that the second movable component includes a second movable seat and a second T-block, one side of the lower end of the second movable seat is rotatably connected to the upper side of the second stirring plate, the second T-block slides inside the second movable seat, a plurality of second spray valves are provided on one side of the inner wall of the second T-block, a first elastic stirring member is interconnected between the first movable seat and the second movable seat, and a second elastic stirring member is interconnected between the first T-block and the second T-block.

[0011] A further technical solution is that an inverted first truncated cone is fixedly provided on the upper side of the fixed cylinder, a plurality of arc-shaped plates are provided in a circular array on the outer wall of the first truncated cone, an L-shaped rod is provided on the lower side of the T-shaped rod, one vertical end of the L-shaped rod is fixedly connected to the lower side of the T-shaped rod, and one horizontal end of the L-shaped rod is in sliding contact with the outer wall of the arc-shaped plate.

[0012] According to a further technical solution, a plurality of arc-shaped protrusions are provided at intervals on the outer wall of the arc-shaped plate, one end of the L-shaped rod in the horizontal direction is in sliding contact with the arc-shaped protrusions, and a first spring is provided between one end of the T-shaped rod and the inside of the first stirring plate.

[0013] A further technical solution is that an annular cavity is provided inside the first cone, a second cone is vertically slidably provided in the annular cavity, an annular plate is fixedly connected between the upper end of the second cone and the lower side of the disc, a push rod is provided on the inner wall of each arc-shaped plate, one end of the push rod is fixedly connected to the inner wall of the arc-shaped plate, and the other end of the push rod is in sliding contact with the inclined surface of the outer wall of the second cone, a movable block is fixedly provided on one side of the push rod, a second spring is mutually connected between the movable block and the inner wall of the annular cavity, and an elastic connecting piece is mutually connected between one ends of each two adjacent arc-shaped plates.

[0014] A further technical solution is that a fixed block is fixedly provided on one side of the lower outer wall of the rotating shaft, the inner wall of the sleeve is in sliding contact with the outer wall of the rotating shaft, and the inner wall of the sleeve is in vertical sliding contact with the outside of the fixed block. A through hole is provided in the middle of the first frustum, and two arc-shaped slide grooves are symmetrically provided on the inner wall of the through hole. The two arc-shaped slide grooves are interconnected at the head and tail to form a wave-shaped slide groove structure. Two sliding blocks are symmetrically fixed on the outer wall of the sleeve, and the outer wall of the sleeve is in sliding contact with the inner wall of the through hole. The two sliding blocks slide in an arc shape in the two arc-shaped slide grooves respectively. A stepper motor is installed on the upper end of the primary reactor, and the output end of the stepper motor is fixedly connected to the upper end of the rotating shaft through a coupling.

[0015] A further technical solution is that a first annular seat is provided in an annular sliding manner on the middle outer wall of the rotating shaft, a first connecting plate is connected between the outer wall of the first annular seat and one side of the first movable seat, one end of the first connecting plate is rotatably connected to the outer wall of the first annular seat, and the other end of the first connecting plate is rotatably connected to one side of the first movable seat; a second annular seat is provided in an annular sliding manner on the middle inner wall of the first-level reactor, and a connecting component is mutually connected between the inner wall of the second annular seat and one side of the second movable seat; the connecting component includes a second connecting plate and a third connecting plate, one end of the second connecting plate is rotatably connected to the inner wall of the second annular seat, one end of the third connecting plate is rotatably connected to one side of the second movable seat, the other end of the third connecting plate is mutually connected to the inside of the second connecting plate with a third spring, and the other end of the third connecting plate slides inside the second connecting plate, a first sealing cover is rotatably provided on the feed port, a sampling port is provided on one side of the lower part of the first-level reactor, and a second sealing cover is rotatably provided on the sampling port.

[0016] A further technical solution is that a piston plate is vertically slidably provided inside the fixed cylinder, a hydraulic chamber and a mixing chamber are separated inside the fixed cylinder by the piston plate, the hydraulic chamber is communicated with the feeding cylinder, a plurality of first one-way valves are provided on the piston plate, the hydraulic chamber is communicated with the mixing chamber through the first one-way valve, a second one-way valve is provided on the inner wall of the mixing chamber, the mixing chamber is communicated with the interior of the primary reactor through the second one-way valve, a first connecting channel is provided on one side of the inner wall of the sleeve, the mixing chamber is communicated with the interior of the disc through the first connecting channel, the interior of the disc is communicated with one side of the interior of the first stirring plate, a second connecting channel is provided inside the T-bar, one side of the interior of the first stirring plate is communicated with the second connecting channel, the interior of the first movable seat is communicated with the interior of the first stirring plate with a first telescopic connecting pipe, the second connecting channel is communicated with the interior of the second movable seat with a second telescopic connecting pipe, a first overflow pipe is communicated between the middle part of the primary reactor and the middle part of the secondary reactor, and a second overflow pipe is communicated between the middle part of the secondary reactor and the middle part of the tertiary reactor.

[0017] A further technical solution is that the cooling component includes a cooling pipe, which is installed in the inner wall of the first-level reactor, one end of the cooling pipe is provided with an inlet, and the other end of the cooling pipe is provided with an outlet; the circulation component includes a storage tank, which is located on the external side of the first-level reactor, the interior of the storage tank is connected to the lower side of the interior of the first-level reactor and is provided with a discharge pipe, a circulation pump is provided on the external side of the storage tank, one end of the circulation pump is connected to the interior of the storage tank and is provided with a first return pipe, a distributor is fixedly provided on the upper side of the interior of the first-level reactor, the other end of the circulation pump is connected to the distributor and is provided with a second return pipe, and a cooler is installed on the second return pipe; a plurality of support frames are fixedly provided at the lower end of the first-level reactor, and a detection component is installed at the upper end of the first-level reactor, and the detection component includes temperature, pressure and liquid level instruments.

[0018] A continuous multi-stage chlorination reaction method comprises the following steps:

[0019] S1: preparation stage, the materials for chlorination reaction are filled into the reactors at each level, and the materials are temporarily discharged after being filled, and intermittent chlorination reaction is first performed. After each level of intermittent chlorination reaction reaches the end point, continuous chlorination reaction is prepared;

[0020] S2: primary chlorination reaction, chlorine enters the primary reactor through the feed barrel according to the set percentage, and the stirring component is used to diffuse the chlorine and fully contact the material, and the catalyst is used to chlorinate the chlorine and the material. Under the action of the catalyst, parachlorotoluene and chlorine generate dichloro products 2,4-dichlorotoluene and 3,4-dichlorotoluene, and the by-product is trichlorotoluene;

[0021] S3: secondary chlorination reaction. After the primary chlorination reaction, the unreacted chlorine gas gathered in the upper gas of the primary reactor enters the bottom of the secondary reactor through the first connecting pipe, and the chlorine gas is sprayed upwards. The circulating pump is used to spray the material downwards from the upper part of the secondary reactor, so that the chlorine gas and the material are in countercurrent contact, the contact area between the chlorine gas and the material is expanded, and the reaction rate is promoted.

[0022] S4: tertiary chlorination reaction. After the secondary chlorination reaction, the unreacted chlorine gas gathered in the upper gas of the secondary reactor enters the bottom of the tertiary reactor through the second connecting pipe. The chlorine gas is sprayed upward to contact with the material in the tertiary reactor, so as to carry out continuous multi-stage chlorination reaction of the chlorine gas.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] The invention discloses a continuous multi-stage chlorination reaction device. The device comprises an arc plate, an L-shaped rod, a T-shaped rod, a second stirring plate, a first movable assembly and a second movable assembly. The sleeve moves upward to drive the disc and the first stirring plate to move upward, and the first stirring plate moves upward to drive the T-shaped rod and the L-shaped rod to move upward. One end of the L-shaped rod in a horizontal direction slides in contact with the outer wall inclined surface of the arc plate, so that the L-shaped rod and the T-shaped rod move radially outward under the guidance of the outer wall inclined surface of the arc plate. The radial outward movement of the T-shaped rod drives the second stirring plate and the second movable assembly to move radially outward. The first movable assembly is fixed in a radial direction to match the radial outward movement of the second movable assembly, so that the first elastic stirring member and the second elastic stirring member are stretched, the contact area between the stirring assembly and the material is expanded, and the stirring and mixing of the material and the chlorine is improved, so that the material and the chlorine are fully contacted and reacted. By setting the arc-shaped protrusion and the first spring, under the guiding action of the arc-shaped protrusion and the elastic force of the first spring, the T-shaped rod moves radially back and forth in a small range while moving radially outward in a large range; the small radial back and forth movement of the T-shaped rod drives the second stirring plate and the second movable component to move radially back and forth in a small range, which is beneficial to the second movable component to move radially back and forth in the material, promotes the fluidity of the material in the first-stage reactor and promotes the expansion of the contact area between the chlorine and the material when the chlorine in the second movable seat is sprayed through the plurality of second spray valves, which is beneficial to improve the chlorination reaction. Finally, through the arrangement of the annular plate, the second truncated cone and the push rod, the disk moves upward, driving the annular plate and the second truncated cone to move upward. Through the sliding contact between one end of the push rod and the outer wall inclined surface of the second truncated cone, the second truncated cone moves upward to guide and extrude the push rod, thereby causing the push rod and the arc plate to move radially outward. The arc plate moves radially outward, further pushing the L-shaped rod and the T-shaped rod to move further radially outward. The radial outward movement of the T-shaped rod drives the second stirring plate and the second movable assembly to move further radially outward, thereby further stretching and expanding the area of ​​the first elastic stirring member and the second elastic stirring member, which is beneficial to improving the stirring effect of the stirring assembly on the material.

[0025] The invention discloses a continuous multi-stage chlorination reaction device. Through the arrangement of a disc, a first stirring plate and a second stirring plate, the rotation of a sleeve drives the rotation of the disc, the rotation of the disc drives the rotation of a plurality of first stirring plates, a T-shaped rod and a second stirring plate, the rotation of the first stirring plate and the second stirring plate drives the rotation of a first movable component and a second movable component, the rotation of the first movable component and the second movable component causes the chlorine in the first movable seat and the second movable seat to be respectively sprayed out in a rotational diffusion manner through a plurality of first spray valves and a second spray valve, thereby increasing the contact area between the chlorine and the material and making the chlorine evenly distributed in the material. Through the arrangement of the first connecting plate, the first annular seat, the connecting assembly and the second annular seat, the sleeve moves up and down to drive the first movable assemblies and the second movable assemblies to move up and down, and under the pulling action of the first connecting plate and the connecting assembly, the first movable assembly and the second movable assembly rotate toward each other and away from each other to cooperate with the rotation of the first movable assembly and the second movable assembly, and further the chlorine in the first movable seat and the second movable seat is respectively sprayed out in a rotational diffusion manner through the first spray valves and the second spray valves, further increasing the contact area between the chlorine and the material, so that the chlorine is evenly distributed in the primary reactor, ensuring the efficiency of the chlorination reaction, improving the utilization rate of the chlorine in the chlorination reaction, reducing the emission of tail chlorine, and improving its environmental protection factor. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0027] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0028] Figure 1 It is an isometric structural schematic diagram of the present invention;

[0029] Figure 2 It is a first isometric structural schematic diagram of the primary reactor in the present invention;

[0030] Figure 3 It is a second isometric structural schematic diagram of the primary reactor in the present invention;

[0031] Figure 4 It is an isometric structural schematic diagram of the circulation component in the present invention;

[0032] Figure 5 It is an isometric structural schematic diagram of the cooling assembly in the present invention;

[0033] Figure 6 It is a front view structural schematic diagram of the primary reactor in the present invention;

[0034] Figure 7 for Figure 6 Schematic diagram of the cross-sectional structure at AA in the middle;

[0035] Figure 8 for Figure 7 A schematic diagram of the local enlarged structure at B in the middle;

[0036] Fig. 9 for Figure 7 A schematic diagram of the local enlarged structure at C in the middle;

[0037] Fig.10 for Fig. 9 A schematic diagram of the local enlarged structure at E in the middle;

[0038] Fig.11 for Fig. 9 The structural schematic diagram of the local enlarged view at F in the middle;

[0039] Fig.12 It is a first isometric structural schematic diagram of the first truncated cone in the present invention;

[0040] Fig.13 It is a second isometric structural schematic diagram of the first truncated cone in the present invention.

[0041] Description of reference numerals:

[0042] The first reactor 10, the second reactor 11, the third reactor 12, the first connecting pipe 13, the second connecting pipe 14, the feed barrel 15, the support frame 16, the feed port 17, the first sealing cover 18, the stepping motor 19, the catalyst barrel 20, the feed pipe 21, the first spray valve 22, the sampling port 23, the second sealing cover 24, the storage tank 25, the discharge pipe 26, the circulation pump 27, the first return pipe 28, the second return pipe 29, the cooler 30, the annular cavity 31, the distributor 32, the cooling pipe 33, the inlet 34, the outlet 35, the detection component 36, the rotating shaft 37, the fixed barrel 38, the sleeve 39, the fixed block 40, the first truncated table 41, the arc chute 42, the slider 43, the disc 44, the first connecting channel 45, the first stirring plate 46, the T-bar 47, the second stirring plate 48, the first movable seat 49, the first T-block 50, second movable seat 51, second T-block 52, first elastic stirring member 53, second elastic stirring member 54, first spring 55, first telescopic connecting pipe 56, second spray valve 57, second telescopic connecting pipe 59, second connecting channel 60, piston plate 61, hydraulic chamber 62, mixing chamber 63, first one-way valve 64, second one-way valve 65, L-shaped rod 66, arc plate 67, arc-shaped protrusion 68, annular plate 69, second frustum 70, push rod 71, movable block 72, second spring 73, through hole 74, elastic connecting member 75, first annular seat 76, first connecting plate 77, second annular seat 78, second connecting plate 79, third connecting plate 80, third spring 81, connecting assembly 82, first movable assembly 83, second movable assembly 84, first overflow pipe 85, second overflow pipe 86. DETAILED DESCRIPTION

[0043] The following embodiments of the present invention are described in further detail in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0044] In the description of the present invention, unless otherwise specified, "plurality" means two or more than two; the orientations or positional relationships indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0045] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0046] As attached Figure 1 To Attachment Fig.13 As shown:

[0047] The invention provides a continuous multi-stage chlorination reaction device.

[0048] See attached Figure 1 To Attachment Fig.13 , comprising a primary reactor 10, a secondary reactor 11, and a tertiary reactor 12, wherein a first connecting pipe 13 is provided between the upper part of the primary reactor 10 and the lower part of the secondary reactor 11, a second connecting pipe 14 is provided between the upper part of the secondary reactor 11 and the lower part of the tertiary reactor 12, a feed port 17 is provided at the upper end of the primary reactor 10, a catalyst cartridge 20 is fixedly provided at the upper end of the primary reactor 10, the interior of the catalyst cartridge 20 is connected to the interior of the primary reactor 10 and a feed pipe 21 is provided, a circulation component is provided on one side of the exterior of the primary reactor 10, a cooling component is provided in the inner wall of the primary reactor 10, a stirring component is provided on the lower side of the interior of the primary reactor 10, and a feed cylinder 15 is provided at the lower end of the primary reactor 10; the stirring component comprises a fixed cylinder 38, and the fixed cylinder 38 is fixed to the primary reactor 1 0, a rotating shaft 37 is rotatably provided inside the primary reactor 10, a sleeve 39 is sleeved on the lower outer wall of the rotating shaft 37, a disc 44 is fixedly provided on the upper outer wall of the sleeve 39, a plurality of first stirring plates 46 are fixedly provided on the outer wall of the disc 44, a T-shaped rod 47 is slidably provided inside each first stirring plate 46, a second stirring plate 48 is fixedly provided at one end of each T-shaped rod 47, a first movable component 83 is provided on the upper side of each first stirring plate 46, and a second movable component 84 is provided on the upper side of the second stirring plate 48; the first movable component 83 includes a first movable seat 49 and a first T-shaped block 50, one side of the lower end of the first movable seat 49 is rotatably connected to the upper side of the first stirring plate 46, the first T-shaped block 50 slides inside the first movable seat 49, and a plurality of first spray valves 22 are provided on the first T-shaped block 50.

[0049] Preferably, see Attachment Figure 7 To Attachment Fig. 9The second movable assembly 84 includes a second movable seat 51 and a second T-block 52. One side of the lower end of the second movable seat 51 is rotatably connected to the upper side of the second stirring plate 48. The second T-block 52 slides inside the second movable seat 51. One side of the inner wall of the second T-block 52 is provided with a plurality of second spray valves 57. A first elastic stirring member 53 is interconnected between the first movable seat 49 and the second movable seat 51. A second elastic stirring member 54 is interconnected between the first T-block 50 and the second T-block 52.

[0050] Preferably, see Attachment Fig. 9 , Attachment Fig.12 , Attachment Fig.13 An inverted first truncated cone 41 is fixedly provided on the upper side of the fixed cylinder 38, and a plurality of arc-shaped plates 67 are provided in a circular array on the outer wall of the first truncated cone 41. An L-shaped rod 66 is provided on the lower side of the T-shaped rod 47, and one vertical end of the L-shaped rod 66 is fixedly connected to the lower side of the T-shaped rod 47, and one horizontal end of the L-shaped rod 66 is in sliding contact with the outer wall of the arc-shaped plate 67.

[0051] Preferably, see Attachment Fig. 9 , Attachment Fig.12 , Attachment Fig.13 A plurality of arc-shaped protrusions 68 are arranged at intervals on the outer wall of the arc-shaped plate 67, one end of the L-shaped rod 66 in the horizontal direction is in sliding contact with the arc-shaped protrusion 68, and a first spring 55 is arranged between one end of the T-shaped rod 47 and the inside of the first stirring plate 46 to be interconnected.

[0052] Preferably, see Attachment Fig. 9 To Attachment Fig.13 An annular cavity 31 is provided inside the first truncated cone 41, and a second truncated cone 70 is vertically slidably provided inside the truncated cone 31. An annular plate 69 is fixedly connected between the upper end of the second truncated cone 70 and the lower side of the disc 44. A push rod 71 is provided on the inner wall of each arc-shaped plate 67. One end of the push rod 71 is fixedly connected to the inner wall of the arc-shaped plate 67, and the other end of the push rod 71 is in sliding contact with the outer wall inclined surface of the second truncated cone 70. A movable block 72 is fixedly provided on one side of the push rod 71. A second spring 73 is mutually connected between the movable block 72 and the inner wall of the annular cavity 31. An elastic connecting member 75 is mutually connected between one ends of each two adjacent arc-shaped plates 67.

[0053] Preferably, see Attachment Figure 7 , Attachment Fig. 9 , Attachment Fig.12 , Attachment Fig.13A fixed block 40 is fixedly provided on one side of the lower outer wall of the rotating shaft 37, the inner wall of the sleeve 39 is in sliding contact with the outer wall of the rotating shaft 37, and the inner wall of the sleeve 39 is in vertical sliding contact with the outside of the fixed block 40. A through hole 74 is provided in the middle of the first truncated cone 41, and two arc-shaped slide grooves 42 are symmetrically provided on the inner wall of the through hole 74. The two arc-shaped slide grooves 42 are connected to each other at the head and tail to form a wave-shaped slide groove structure. Two sliders 43 are symmetrically fixed on the outer wall of the sleeve 39, and the outer wall of the sleeve 39 is in sliding contact with the inner wall of the through hole 74. The two sliders 43 slide in an arc shape in the two arc-shaped slide grooves 42 respectively. A stepper motor 19 is installed at the upper end of the primary reactor 10, and the output end of the stepper motor 19 is fixedly connected to the upper end of the rotating shaft 37 through a coupling.

[0054] Preferably, see Attachment Figure 2 , Attachment Figure 3 , Attachment Figure 7 To Attachment Fig. 9 A first annular seat 76 is provided in an annular sliding manner on the middle outer wall of the rotating shaft 37, and a first connecting plate 77 is connected between the outer wall of the first annular seat 76 and one side of the first movable seat 49, one end of the first connecting plate 77 is rotatably connected to the outer wall of the first annular seat 76, and the other end of the first connecting plate 77 is rotatably connected to one side of the first movable seat 49; a second annular seat 78 is provided in an annular sliding manner on the middle inner wall of the primary reactor 10, and a connecting assembly 82 is mutually connected between the inner wall of the second annular seat 78 and one side of the second movable seat 51; the connecting assembly 82 includes The second connecting plate 79 and the third connecting plate 80, one end of the second connecting plate 79 is rotatably connected to the inner wall of the second annular seat 78, one end of the third connecting plate 80 is rotatably connected to one side of the second movable seat 51, the other end of the third connecting plate 80 is interconnected with the inside of the second connecting plate 79 and is provided with a third spring 81, the other end of the third connecting plate 80 slides inside the second connecting plate 79, a first sealing cover 18 is rotatably provided on the feed port 17, a sampling port 23 is provided on one side of the lower part of the first-level reactor 10, and a second sealing cover 24 is rotatably provided on the sampling port 23.

[0055] Preferably, see Attachment Figure 1 , Attachment Figure 7 , Attachment Fig. 9 , Attachment Fig.11A piston plate 61 is vertically slidably provided inside the fixed cylinder 38. A hydraulic chamber 62 and a mixing chamber 63 are separated inside the fixed cylinder 38 by the piston plate 61. The hydraulic chamber 62 is communicated with the feed cylinder 15. A plurality of first one-way valves 64 are provided on the piston plate 61. The hydraulic chamber 62 and the mixing chamber 63 are communicated with each other through the first one-way valve 64. A second one-way valve 65 is provided on the inner wall of the mixing chamber 63. The mixing chamber 63 is communicated with the interior of the primary reactor 10 through the second one-way valve 65. A first connecting channel 45 is provided on one side of the inner wall of the sleeve 39. The mixing chamber 63 is communicated with the interior of the disc 44 through the first connecting channel 45. The interior of the disk 44 is connected to one side of the interior of the first stirring plate 46, the interior of the T-bar 47 is provided with a second connecting channel 60, one side of the interior of the first stirring plate 46 is connected to the second connecting channel 60, the interior of the first movable seat 49 is connected to the interior of the first stirring plate 46 and is provided with a first telescopic connecting pipe 56, the second connecting channel 60 is connected to the interior of the second movable seat 51 and is provided with a second telescopic connecting pipe 59, the middle part of the first-stage reactor 10 is connected to the middle part of the second-stage reactor 11 and is provided with a first overflow pipe 85, and the middle part of the second-stage reactor 11 and the middle part of the tertiary reactor 12 are connected with a second overflow pipe 86.

[0056] Preferably, see Attachment Figure 1 To Attachment Figure 7 The cooling component includes a cooling pipe 33, which is installed in the inner wall of the first-stage reactor 10. An inlet 34 is provided at one end of the cooling pipe 33, and an outlet 35 is provided at the other end of the cooling pipe 33. The circulation component includes a storage tank 25, which is located on the outer side of the first-stage reactor 10. The interior of the storage tank 25 is connected to the lower inner side of the first-stage reactor 10 and is provided with a discharge pipe 26. A circulation pump 27 is provided on the outer side of the storage tank 25. One end of the circulation pump 27 is connected to the interior of the storage tank 25 and is provided with a first return pipe 28. A distributor 32 is fixedly provided on the upper inner side of the first-stage reactor 10. The other end of the circulation pump 27 is connected to the distributor 32 and is provided with a second return pipe 29. A cooler 30 is installed on the second return pipe 29. A plurality of support frames 16 are fixedly provided at the lower end of the first-stage reactor 10. A detection component 36 is installed at the upper end of the first-stage reactor 10. The detection component 36 includes temperature, pressure and liquid level instruments.

[0057] A continuous multi-stage chlorination reaction method comprises the following steps:

[0058] S1: preparation stage, the materials for chlorination reaction are filled into the reactors at each level, and the materials are temporarily discharged after being filled, and intermittent chlorination reaction is first performed. After each level of intermittent chlorination reaction reaches the end point, continuous chlorination reaction is prepared;

[0059] S2: primary chlorination reaction, chlorine enters the primary reactor through the feed barrel according to the set percentage, and the stirring component is used to diffuse the chlorine and fully contact the material, and the catalyst is used to chlorinate the chlorine and the material. Under the action of the catalyst, parachlorotoluene and chlorine generate dichloro products 2,4-dichlorotoluene and 3,4-dichlorotoluene, and the by-product is trichlorotoluene;

[0060] S3: secondary chlorination reaction. After the primary chlorination reaction, the unreacted chlorine gas gathered in the upper gas of the primary reactor enters the bottom of the secondary reactor through the first connecting pipe, and the chlorine gas is sprayed upwards. The circulating pump is used to spray the material downwards from the upper part of the secondary reactor, so that the chlorine gas and the material are in countercurrent contact, the contact area between the chlorine gas and the material is expanded, and the reaction rate is promoted.

[0061] S4: tertiary chlorination reaction. After the secondary chlorination reaction, the unreacted chlorine gas gathered in the upper gas of the secondary reactor enters the bottom of the tertiary reactor through the second connecting pipe. The chlorine gas is sprayed upward to contact with the material in the tertiary reactor, so as to carry out continuous multi-stage chlorination reaction of the chlorine gas.

[0062] Specific use of the present invention:

[0063] The staff puts parachlorotoluene into the primary reactor 10 through the feed port 17, so that the liquid level of parachlorotoluene is lower than the height of the first overflow pipe 85, and the staff rotates the first sealing cover 18 to close the feed port 17. The lower end of the feed cylinder 15 is connected to the tank storing chlorine gas, so that the chlorine gas enters the hydraulic chamber 62 through the feed cylinder 15. The control system controls the amount of catalyst in the catalyst cylinder 20 entering the primary reactor 10 by manipulating the solenoid valve in the feed pipe 21.

[0064] When the primary chlorination reaction is performed, first, the control system controls the stirring assembly to start, the stepper motor 19 starts to drive the rotating shaft 37 to rotate, and the rotating shaft 37 rotates to drive the fixed block 40 to rotate. The inner wall of the sleeve 39 vertically slides in contact with the outside of the fixed block 40, and the fixed block 40 rotates horizontally to drive the sleeve 39 to rotate. The sleeve 39 rotates to drive the two sliders 43 to rotate, and the two sliders 43 rotate to slide in arcs in the two arc-shaped chute 42 respectively, and the two arc-shaped chute 42 are connected to each other at the head and tail to form a wavy chute structure. Under the guidance of the two arc-shaped chute 42, the two sliders 43 rotate and move up and down. The rotation and up and down movement of the two sliders 43 drive the sleeve 39 to rotate and move up and down.

[0065] Secondly, the sleeve 39 moves up and down to drive the piston plate 61 to move up and down. The piston plate 61 moves downward to squeeze the chlorine gas in the hydraulic chamber 62 into the mixing chamber 63 through the first one-way valve 64. At the same time, the piston plate 61 moves downward to suck the material in the primary reactor 10 into the mixing chamber 63 through the second one-way valve 65, so that the chlorine gas and the material are preliminarily mixed and contacted in the mixing chamber 63. The piston plate 61 moves upward to squeeze the material and chlorine gas in the mixing chamber 63 through the first connecting channel 45 into the disc 44, and the material and chlorine gas in the disc 44 enter the inner side of the plurality of first stirring plates 46.

[0066] At the same time, the sleeve 39 moves upward to drive the disc 44 and the first stirring plate 46 to move upward, and the first stirring plate 46 moves upward to drive the T-shaped rod 47 and the L-shaped rod 66 to move upward. One end of the L-shaped rod 66 in the horizontal direction slides in contact with the outer wall slope of the arc plate 67, so that the L-shaped rod 66 and the T-shaped rod 47 move radially outward under the guidance of the outer wall slope of the arc plate 67. The radial outward movement of the T-shaped rod 47 drives the second stirring plate 48 and the second movable component 84 to move radially outward, and the first movable component 83 is fixed in the radial direction to match the radial outward movement of the second movable component 84, so that the first elastic stirring member 53 and the second elastic stirring member 54 are stretched, and the contact area between the stirring component and the material is expanded, which is conducive to improving the stirring and mixing of the material and the chlorine gas, so that the material and the chlorine gas are fully contacted and reacted. Among them, the movement of the T-shaped rod 47 makes the first telescopic connecting pipe 56 communicate with the inner side of the first stirring plate 46, so that a part of the chlorine gas on the inner side of the first stirring plate 46 enters the first movable seat 49 through the first telescopic connecting pipe 56. Another part of the chlorine gas on one side of the first stirring plate 46 enters the second movable seat 51 through the second connecting channel 60 and the second telescopic connecting pipe 59 .

[0067] Next, the L-shaped rod 66 moves upward, and one end of the L-shaped rod 66 in the horizontal direction contacts the arc-shaped protrusion 68, so that the L-shaped rod 66 and the T-shaped rod 47 move radially outward under the guidance of the arc-shaped protrusion 68. The radial outward movement of the T-shaped rod 47 stretches the first spring 55 to generate elastic force. When one end of the L-shaped rod 66 in the horizontal direction is out of contact with the arc-shaped protrusion 68, the L-shaped rod 66 and the T-shaped rod 47 move radially inward under the elastic force of the first spring 55, so that one end of the L-shaped rod 66 in the horizontal direction always contacts the outer wall of the arc plate 67 or the arc-shaped protrusion 68. Therefore, under the guidance of the arc-shaped protrusion 68 and the elastic force of the first spring 55, the T-shaped rod 47 moves radially back and forth in a small range while moving radially outward in a large range. The small radial back-and-forth movement of the T-shaped rod 47 drives the second stirring plate 48 and the second movable assembly 84 to move back and forth in the radial direction in a small range, which is conducive to the radial back-and-forth movement of the second movable assembly 84 in the material, promoting the fluidity of the material in the primary reactor 10 and promoting the expansion of the contact area between the chlorine gas and the material when the chlorine gas in the second movable seat 51 is sprayed through the plurality of second spray valves 57. Among them, the radial outer movement of the second movable assembly 84 drives the third connecting plate 80 to move, and the movement of the third connecting plate 80 compresses the third spring 81 to generate elastic force.

[0068] At the same time, the rotation of the sleeve 39 drives the disc 44 to rotate, and the rotation of the disc 44 drives the first stirring plates 46, the T-bar 47, and the second stirring plates 48 to rotate. The rotation of the first stirring plates 46 and the second stirring plates 48 drives the first movable assembly 83 and the second movable assembly 84 to rotate. The rotation of the first movable assembly 83 and the second movable assembly 84 causes the chlorine in the first movable seat 49 and the second movable seat 51 to be respectively sprayed out in a rotational diffusion manner through the first spray valves 22 and the second spray valves 57, thereby increasing the contact area between the chlorine and the material and making the chlorine evenly distributed in the material.

[0069] Then, the disc 44 moves upward, driving the annular plate 69 and the second truncated cone 70 to move upward. One end of the push rod 71 slides in contact with the outer wall inclined surface of the second truncated cone 70, and the second truncated cone 70 moves upward to guide and squeeze the push rod 71, so that the push rod 71 and the arc plate 67 move radially outward. The radial outward movement of the four arc plates 67 stretches and expands the four elastic connecting members 75 respectively, so that the outer walls of the four arc plates 67 and the outer walls of the four elastic connecting members 75 always form a conical structure. At the same time, the arc plate 67 moves radially outward, further pushing the L-shaped rod 66 and the T-shaped rod 47 to move radially outward. The radial outward movement of the T-shaped rod 47 drives the second stirring plate 48 and the second movable assembly 84 to move radially outward, thereby further stretching and expanding the area of ​​the first elastic stirring member 53 and the second elastic stirring member 54, which is beneficial to improving the stirring effect of the stirring assembly on the material. The movement of the push rod 71 drives the movable block 72 to move, and the movement of the movable block 72 compresses the second spring 73 to generate elastic force. Under the elastic force of the second spring 73, one end of the push rod 71 is always in sliding contact with the outer wall of the second truncated table 70.

[0070] At the same time, the sleeve 39 moves upward to drive the disc 44 to move upward, and the disc 44 moves upward to drive the first stirring plates 46, the T-shaped rod 47, and the second stirring plates 48 to move upward, and the first stirring plates 46 and the second stirring plates 48 move upward to drive the first movable assembly 83 and the second movable assembly 84 to move upward. The first movable assembly 83 moves upward and is pulled by the first connecting plate 77, so that the first movable assembly 83 rotates in the direction close to the rotating shaft 37. At the same time, the second movable assembly 84 moves upward and is pulled by the connecting assembly 82, so that the second movable assembly 84 rotates away from the rotating shaft 37, so that the first movable assembly 83 and the second movable assembly 84 rotate in opposite directions, further stretching the first elastic stirring member 53 and the second elastic stirring member 54, and expanding the contact area between the stirring assembly and the material. The sleeve 39 moves up and down to drive the first movable components 83 and the second movable components 84 to move up and down. Under the pulling action of the first connecting plate 77 and the connecting component 82, the first movable components 83 and the second movable components 84 rotate close to each other and rotate away from each other to cooperate with the rotation of the first movable components 83 and the second movable components 84, and further make the chlorine in the first movable seat 49 and the second movable seat 51 respectively rotate and diffuse through the first spray valves 22 and the second spray valves 57, so as to further increase the contact area between the chlorine and the material, so that the chlorine is evenly distributed in the primary reactor 10, ensure the efficiency of the chlorination reaction, improve the utilization rate of chlorine in the chlorination reaction, reduce the emission of tail chlorine, and improve its environmental protection coefficient. Among them, the rotation of the sleeve 39 drives the disc 44 to rotate, and the rotation of the disc 44 drives the first stirring plates 46, the T-bar 47, and the second stirring plate 48 to rotate, and the rotation of the first stirring plate 46 and the second stirring plate 48 drives the first movable component 83 and the second movable component 84 to rotate. The first movable assembly 83 rotates through the first connecting plate 77 to drive the first annular seat 76 to slide annularly on the outer wall of the rotating shaft 37. The second movable assembly 84 rotates to drive the connecting assembly 82 to rotate, and the connecting assembly 82 rotates to drive the second annular seat 78 to slide annularly on the inner wall of the primary reactor 10.

[0071] Finally, part of the material in the primary reactor 10 enters the storage tank 25 through the discharge pipe 26. The control system controls the circulation pump 27 to start, and the circulation pump 27 starts to transport the material in the storage tank 25 to the second return pipe 29 through the first return pipe 28. The cooler 30 cools the material in the second return pipe 29, and the cooled material enters the distributor 32, and the material is sprayed downward by the distributor 32. The chlorine moves upward from the bottom of the primary reactor 10 to facilitate countercurrent contact between the material and the chlorine, thereby expanding the contact area between the gas and the material gathered in the upper part of the primary reactor 10, reducing the chlorine that has not been completely reacted and increasing the reaction rate. The cooling water enters the cooling pipe 33 through the inlet 34, and the cooling pipe 33 is located in the inner wall of the primary reactor 10, thereby cooling the material in the primary reactor 10.

[0072] In the secondary chlorination reaction, the gas gathered at the upper part of the primary reactor 10 enters the stirring assembly at the lower side of the secondary reactor 11 through the first connecting pipe 13. The rotating stirring action of the stirring assembly causes the gas to be sprayed upward in a rotating diffusion manner, thereby promoting full contact between the chlorine gas and the material. At the same time, when the material in the primary reactor 10 overflows, the material enters the secondary reactor 11 through the first overflow pipe 85, so as to facilitate the recycling of the material.

[0073] In the three-stage chlorination reaction, the gas gathered at the upper part of the secondary reactor 11 enters the stirring assembly at the lower side of the interior of the third-stage reactor 12 through the second connecting pipe 14. The gas is sprayed upward in a rotating diffusion manner by the rotating stirring action of the stirring assembly, so as to promote full contact between the chlorine gas and the material. At the same time, when the material in the secondary reactor 11 overflows, the material enters the third-stage reactor 12 through the second overflow pipe 86, so as to recycle the material and perform continuous multi-stage chlorination reaction on the chlorine gas.

[0074] The present invention discloses a continuous multi-stage chlorination reaction device. Through the arrangement of the arc plate 67, the L-shaped rod 66, the T-shaped rod 47, the second stirring plate 48, the first movable assembly 83 and the second movable assembly 84, the sleeve 39 moves upward to drive the disc 44 and the first stirring plate 46 to move upward, and the first stirring plate 46 moves upward to drive the T-shaped rod 47 and the L-shaped rod 66 to move upward; one end of the L-shaped rod 66 in the horizontal direction slides in contact with the outer wall inclined surface of the arc plate 67, so that the L-shaped rod 66 and the T-shaped rod 47 move radially outward under the guidance of the outer wall inclined surface of the arc plate 67; the radial outward movement of the T-shaped rod 47 drives the second stirring plate 48 and the second movable assembly 84 to move radially outward, and the first movable assembly 83 is fixed in the radial direction to cooperate with the radial outward movement of the second movable assembly 84, so that the first elastic stirring member 53 and the second elastic stirring member 54 are stretched, the contact area between the stirring assembly and the material is expanded, which is beneficial to improve the stirring and mixing of the material and the chlorine gas, so that the material and the chlorine gas are fully contacted and reacted. By means of the arrangement of the arc-shaped protrusion 68 and the first spring 55, under the guiding action of the arc-shaped protrusion 68 and the elastic force of the first spring 55, the T-bar 47 moves radially outward in a large range while performing a small radial back-and-forth movement; the small radial back-and-forth movement of the T-bar 47 drives the second stirring plate 48 and the second movable assembly 84 to move radially back and forth in a small range, which is beneficial for the second movable assembly 84 to move radially back and forth in the material, promotes the fluidity of the material in the primary reactor 10 and promotes the expansion of the contact area between the chlorine and the material when the chlorine in the second movable seat 51 is sprayed out through the plurality of second spray valves 57, which is beneficial for improving the chlorination reaction. Finally, through the arrangement of the annular plate 69, the second truncated cone 70 and the push rod 71, the disk 44 moves upward, driving the annular plate 69 and the second truncated cone 70 to move upward. Through the sliding contact between one end of the push rod 71 and the outer wall inclined surface of the second truncated cone 70, the second truncated cone 70 moves upward to guide and extrude the push rod 71, thereby causing the push rod 71 and the arc plate 67 to move radially outward. The arc plate 67 moves radially outward, further pushing the L-shaped rod 66 and the T-shaped rod 47 to move further radially outward. The radial outward movement of the T-shaped rod 47 drives the second stirring plate 48 and the second movable component 84 to move further radially outward, thereby further stretching and expanding the area of ​​the first elastic stirring member 53 and the second elastic stirring member 54, which is beneficial to improving the stirring effect of the stirring assembly on the material.

[0075] The present invention discloses a continuous multi-stage chlorination reaction device. Through the arrangement of a disc 44, a first stirring plate 46 and a second stirring plate 48, a sleeve 39 rotates to drive the disc 44 to rotate. The disc 44 rotates to drive a plurality of first stirring plates 46, a T-shaped rod 47 and a second stirring plate 48 to rotate. The first stirring plate 46 and the second stirring plate 48 rotate to drive a first movable assembly 83 and a second movable assembly 84 to rotate. The first movable assembly 83 and the second movable assembly 84 rotate to cause the chlorine in the first movable seat 49 and the second movable seat 51 to be respectively sprayed out in a rotational diffusion manner through a plurality of first spray valves 22 and a second spray valve 57, thereby increasing the contact area between the chlorine and the material and making the chlorine evenly distributed in the material. Through the arrangement of the first connecting plate 77, the first annular seat 76, the connecting assembly 82, and the second annular seat 78, the sleeve 39 moves up and down to drive the first movable assemblies 83 and the second movable assemblies 84 to move up and down. Under the pulling action of the first connecting plate 77 and the connecting assembly 82, the first movable assembly 83 and the second movable assembly 84 rotate toward each other and away from each other to cooperate with the rotation of the first movable assembly 83 and the second movable assembly 84, and further make the chlorine in the first movable seat 49 and the second movable seat 51 respectively rotate and diffuse out through the first spray valves 22 and the second spray valves 57, further increase the contact area between the chlorine and the material, make the chlorine evenly distributed in the primary reactor 10, ensure the efficiency of the chlorination reaction, improve the utilization rate of the chlorine in the chlorination reaction, reduce the emission of tail chlorine, and improve its environmental protection factor.

[0076] The embodiments of the present invention are given for the purpose of illustration and description, and are not intended to be exhaustive or to limit the invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

Claims

1. A continuous multi-stage chlorination reaction device, characterized in that: The invention comprises a primary reactor (10), a secondary reactor (11), and a tertiary reactor (12); a first connecting pipe (13) is provided between the upper part of the primary reactor (10) and the lower part of the secondary reactor (11); a second connecting pipe (14) is provided between the upper part of the secondary reactor (11) and the lower part of the tertiary reactor (12); a feed port (17) is provided at the upper end of the primary reactor (10); a catalyst cartridge (20) is fixedly provided at the upper end of the primary reactor (10); a feed pipe (21) is provided inside the catalyst cartridge (20) and is connected to the inside of the primary reactor (10); a circulation component is provided on one side of the outside of the primary reactor (10); a cooling component is provided in the inner wall of the primary reactor (10); a stirring component is provided on the lower side of the inside of the primary reactor (10); and a feed cartridge (15) is provided at the lower end of the primary reactor (10); The stirring assembly comprises a fixed cylinder (38), the fixed cylinder (38) being fixed to the lower side of the first-stage reaction kettle (10), a rotating shaft (37) being rotatably provided inside the first-stage reaction kettle (10), a sleeve (39) being sleeved on the lower outer wall of the rotating shaft (37), a disk (44) being fixedly provided on the upper outer wall of the sleeve (39), a plurality of first stirring plates (46) being fixedly provided on the outer wall of the disk (44), a T-shaped rod (47) being slidably provided inside each of the first stirring plates (46), and a fixedly provided screw threading device (41) at one end of each of the T-shaped rods (47) There is a second stirring plate (48), a first movable component (83) is provided on the upper side of each of the first stirring plates (46), and a second movable component (84) is provided on the upper side of the second stirring plate (48); the first movable component (83) includes a first movable seat (49) and a first T-shaped block (50), one side of the lower end of the first movable seat (49) is rotatably connected to the upper side of the first stirring plate (46), the first T-shaped block (50) slides inside the first movable seat (49), and a plurality of first spray valves (22) are provided on the first T-shaped block (50).

2. A continuous multi-stage chlorination reaction device according to claim 1, characterized in that: The second movable assembly (84) comprises a second movable seat (51) and a second T-shaped block (52); a lower end of the second movable seat (51) is rotatably connected to an upper side of the second stirring plate (48); the second T-shaped block (52) slides inside the second movable seat (51); a plurality of second spray valves (57) are provided on an inner wall of the second T-shaped block (52); a first elastic stirring member (53) is interconnected between the first movable seat (49) and the second movable seat (51); and a second elastic stirring member (54) is interconnected between the first T-shaped block (50) and the second T-shaped block (52).

3. A continuous multi-stage chlorination reaction device according to claim 1, characterized in that: An inverted first truncated cone (41) is fixedly provided on the upper side of the fixed cylinder (38); a plurality of arc-shaped plates (67) are arranged in a circular array on the outer wall of the first truncated cone (41); an L-shaped rod (66) is provided on the lower side of the T-shaped rod (47); one vertical end of the L-shaped rod (66) is fixedly connected to the lower side of the T-shaped rod (47); and one horizontal end of the L-shaped rod (66) is in sliding contact with the outer wall of the arc-shaped plate (67).

4. A continuous multi-stage chlorination reaction device according to claim 3, characterized in that: The outer wall of the arc plate (67) is provided with a plurality of arc-shaped protrusions (68) at intervals, one end of the L-shaped rod (66) in the horizontal direction is in sliding contact with the arc-shaped protrusions (68), and a first spring (55) is provided between one end of the T-shaped rod (47) and the inside of the first stirring plate (46) which is connected to each other.

5. A continuous multi-stage chlorination reaction device according to claim 4, characterized in that: An annular cavity (31) is provided inside the first truncated cone (41), and a second truncated cone (70) is vertically slidably provided inside the annular cavity (31). An annular plate (69) is fixedly connected between the upper end of the second truncated cone (70) and the lower side of the disc (44). A push rod (71) is provided on the inner wall of each arc-shaped plate (67). One end of the push rod (71) is fixedly connected to the inner wall of the arc-shaped plate (67), and the other end of the push rod (71) is in sliding contact with the outer wall inclined surface of the second truncated cone (70). A movable block (72) is fixedly provided on one side of the push rod (71), and a second spring (73) is mutually connected between the movable block (72) and the inner wall of the annular cavity (31). An elastic connecting member (75) is mutually connected between one end of each two adjacent arc-shaped plates (67).

6. A continuous multi-stage chlorination reaction device according to claim 3, characterized in that: A fixed block (40) is fixedly provided on one side of the lower outer wall of the rotating shaft (37); the inner wall of the sleeve (39) is in sliding contact with the outer wall of the rotating shaft (37); the inner wall of the sleeve (39) is in vertical sliding contact with the outside of the fixed block (40); a through hole (74) is provided in the middle of the first truncated cone (41); two arc-shaped slide grooves (42) are symmetrically provided on the inner wall of the through hole (74); the two arc-shaped slide grooves (42) are connected to each other at the head and tail to form a wave-shaped slide groove structure; two sliders (43) are symmetrically fixedly provided on the outer wall of the sleeve (39); the outer wall of the sleeve (39) is in sliding contact with the inner wall of the through hole (74); the two sliders (43) slide in an arc shape in the two arc-shaped slide grooves (42) respectively; a stepping motor (19) is installed at the upper end of the primary reactor (10); the output end of the stepping motor (19) is fixedly connected to the upper end of the rotating shaft (37) through a coupling.

7. A continuous multi-stage chlorination reaction device according to claim 2, characterized in that: A first annular seat (76) is provided in an annular sliding manner on the middle outer wall of the rotating shaft (37); a first connecting plate (77) is connected between the outer wall of the first annular seat (76) and one side of the first movable seat (49); one end of the first connecting plate (77) is rotatably connected to the outer wall of the first annular seat (76); the other end of the first connecting plate (77) is rotatably connected to one side of the first movable seat (49); a second annular seat (78) is provided in an annular sliding manner on the middle inner wall of the primary reactor (10); a connecting assembly (82) is mutually connected between the inner wall of the second annular seat (78) and one side of the second movable seat (51); the connecting assembly (82) includes a second connecting member; A connecting plate (79) and a third connecting plate (80), one end of the second connecting plate (79) is rotatably connected to the inner wall of the second annular seat (78), one end of the third connecting plate (80) is rotatably connected to one side of the second movable seat (51), the other end of the third connecting plate (80) is interconnected with the interior of the second connecting plate (79) and is provided with a third spring (81), the other end of the third connecting plate (80) slides inside the second connecting plate (79), a first sealing cover (18) is rotatably provided on the feed port (17), a sampling port (23) is provided on one side of the lower part of the first-level reactor (10), and a second sealing cover (24) is rotatably provided on the sampling port (23).

8. A continuous multi-stage chlorination reaction device according to claim 2, characterized in that: A piston plate (61) is vertically slidably provided inside the fixed cylinder (38). A hydraulic chamber (62) and a mixing chamber (63) are separated inside the fixed cylinder (38) by the piston plate (61). The hydraulic chamber (62) is communicated with the feeding cylinder (15). A plurality of first one-way valves (64) are provided on the piston plate (61). The hydraulic chamber (62) and the mixing chamber (63) are communicated with each other through the first one-way valves (64). A second one-way valve (65) is provided on the inner wall of the mixing chamber (63). The mixing chamber (63) is communicated with the interior of the primary reactor (10) through the second one-way valve (65). A first connecting channel (45) is provided on one side of the inner wall of the sleeve (39). The mixing chamber (63) and the interior of the disc (44) are connected through the first connecting channel. The first movable seat (49) and the second movable seat (51) are connected to each other through a first connecting channel (45), the interior of the disc (44) is connected to one side of the interior of the first stirring plate (46), a second connecting channel (60) is provided inside the T-bar (47), one side of the interior of the first stirring plate (46) is connected to the second connecting channel (60), the interior of the first movable seat (49) is connected to the interior of the first stirring plate (46) and a first telescopic connecting pipe (56) is provided, the second connecting channel (60) and the interior of the second movable seat (51) are connected to each other through a second telescopic connecting pipe (59), a first overflow pipe (85) is provided between the middle part of the first reactor (10) and the middle part of the second reactor (11), and a second overflow pipe (86) is provided between the middle part of the second reactor (11) and the middle part of the tertiary reactor (12).

9. A continuous multi-stage chlorination reaction device according to claim 1, characterized in that: The cooling assembly comprises a cooling pipe (33), the cooling pipe (33) being installed in the inner wall of the primary reactor (10), one end of the cooling pipe (33) being provided with an inlet (34), and the other end of the cooling pipe (33) being provided with an outlet (35); the circulation assembly comprises a storage tank (25), the storage tank (25) being located on the outer side of the primary reactor (10), the interior of the storage tank (25) being connected to the lower side of the interior of the primary reactor (10) and being provided with a discharge pipe (26), the outer side of the storage tank (25) being provided with a circulation pump (27), and the circulation One end of the pump (27) is connected to the interior of the storage tank (25) and is provided with a first return pipe (28); a distributor (32) is fixedly provided on the upper side of the interior of the primary reactor (10); the other end of the circulation pump (27) is connected to the distributor (32) and is provided with a second return pipe (29); a cooler (30) is installed on the second return pipe (29); a plurality of support frames (16) are fixedly provided at the lower end of the primary reactor (10); a detection component (36) is installed at the upper end of the primary reactor (10); the detection component (36) includes temperature, pressure and liquid level instruments.

10. A continuous multi-stage chlorination reaction method, comprising a continuous multi-stage chlorination reaction device according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1: preparation stage, the materials for chlorination reaction are filled into the reactors at each level, and the materials are temporarily discharged after being filled, and intermittent chlorination reaction is first performed. After each level of intermittent chlorination reaction reaches the end point, continuous chlorination reaction is prepared; S2: primary chlorination reaction, chlorine enters the primary reactor through the feed barrel according to the set percentage, and the stirring component is used to diffuse the chlorine and fully contact the material, and the catalyst is used to chlorinate the chlorine and the material. Under the action of the catalyst, parachlorotoluene and chlorine generate dichloro products 2,4-dichlorotoluene and 3,4-dichlorotoluene, and the by-product is trichlorotoluene; S3: secondary chlorination reaction. After the primary chlorination reaction, the unreacted chlorine gas gathered in the upper gas of the primary reactor enters the bottom of the secondary reactor through the first connecting pipe, and the chlorine gas is sprayed upwards. The circulating pump is used to spray the material downwards from the upper part of the secondary reactor, so that the chlorine gas and the material are in countercurrent contact, the contact area between the chlorine gas and the material is expanded, and the reaction rate is promoted. S4: tertiary chlorination reaction. After the secondary chlorination reaction, the unreacted chlorine gas gathered in the upper gas of the secondary reactor enters the bottom of the tertiary reactor through the second connecting pipe. The chlorine gas is sprayed upward to contact with the material in the tertiary reactor, so as to carry out continuous multi-stage chlorination reaction of the chlorine gas.

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