Chlorination device for producing bromochlorohydantoin

Abstract

The utility model discloses a chlorination device for producing bromochlorohydantoin, which belongs to the technical field of chlorination devices, and comprises a reaction kettle for chlorination reaction, the inner top of the reaction kettle is fixedly connected with a driving mechanism, and one end of the driving mechanism is connected with a sleeve; the bottom of the air pipe is fixedly connected with a restraining mechanism. A reset mechanism is connected between the sleeve and the annular porous nozzle, and the top of the cylinder is rotationally connected with a positioning mechanism. According to the utility model, the low-speed rotation of the annular porous nozzle is realized through the driving mechanism, and the holes uniformly distributed at the bottom of the nozzle form a dynamic gas covering layer, so that a dead angle area of traditional static distribution is effectively eliminated, chlorine is uniformly diffused on a liquid level, the gas-liquid contact uniformity is improved by more than 40%, and the reaction selectivity is obviously improved; the longitudinal position of the annular multi-hole nozzle can be flexibly adjusted through the restraining mechanism, so that the annular multi-hole nozzle works close to the liquid level.

Description

Technical Field

[0001] This utility model relates to the field of chlorination equipment technology, and in particular to a chlorination equipment for the production of bromochlorohydantoin. Background Technology

[0002] In the production of bromochlorohydantoin (BCDMH), the chlorination reaction is the core process, and its efficiency directly affects the purity, yield and production cost of the product. Traditional chlorination equipment usually uses a single gas inlet or a simple chlorine gas distributor, which has certain drawbacks.

[0003] A single inlet or a simple chlorine distributor results in poor uniformity of chlorine distribution. A single inlet or a straight-through pipe design causes chlorine to enter the reaction system in a concentrated jet form, making it difficult to diffuse evenly in the liquid phase and creating a coexistence of local high-concentration and low-concentration areas. High-concentration areas are prone to side reactions (such as over-chlorination or organic degradation), while low-concentration areas have raw material residues due to incomplete reactions, resulting in reduced overall reaction selectivity. In addition, it can also limit reaction efficiency. When the gas-liquid mass transfer area is limited, the reaction rate will be low, requiring extended reaction time or an increased chlorine excess coefficient to compensate, increasing energy consumption and safety hazards.

[0004] Therefore, there is an urgent need to provide a chlorination unit for the production of bromochlorohydantoin to solve the above problems. Utility Model Content

[0005] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a chlorination device for the production of bromochlorohydantoin.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: providing a chlorination device for the production of bromochlorohydantoin, including a reaction vessel for chlorination reaction, a sleeve rotatably connected inside the reaction vessel, an annular multi-hole nozzle for distributing chlorine gas slidably connected inside the sleeve, and a drive mechanism with one end connected to the sleeve fixedly connected to the inner top of the reaction vessel.

[0007] The top of the reactor is fixedly connected to a cylinder that is rotatably connected to a sleeve. A gas pipe is slidably connected inside the cylinder. The other end of the gas pipe is inserted into the sleeve, and a constraint mechanism is fixedly connected to the bottom of the gas pipe.

[0008] A reset mechanism is connected between the sleeve and the annular multi-hole nozzle, and a positioning mechanism is rotatably connected to the top of the cylinder.

[0009] The present invention is further configured such that: the bottom of the annular multi-hole nozzle is provided with a plurality of holes for distributing chlorine gas; the annular multi-hole nozzle is hollow inside; and the top of the annular multi-hole nozzle is fixedly connected to a hollow tube communicating with it; the outside of the hollow tube is slidably connected to the inside of the sleeve; and the outside of the hollow tube is fixedly connected to a protrusion located inside the sleeve that slides; and the gas tube is inserted into the hollow tube.

[0010] The above technical solution uses a circular, equidistant array of holes at the bottom of the annular multi-hole nozzle. This facilitates the uniform distribution of chlorine gas, improves the uniformity of chlorine gas distribution, increases the gas-liquid contact area, and enhances reaction efficiency. Chlorine gas is introduced into the hollow tube through the gas pipe, then into the annular multi-hole nozzle through the hollow tube, and finally distributed through the holes. The protrusions allow the hollow tube to slide within the sleeve, and when the sleeve rotates, the protrusions also drive the hollow tube to rotate, making the process convenient, quick, simple, and practical.

[0011] The present invention is further configured such that: the driving mechanism includes a plurality of first supports fixedly connected to the top of the reactor, wherein two of the first supports are rotatably connected to the sleeve, and a motor is installed in the other first support. The output end of the motor is fixedly connected to a helical gear disk, and a helical gear disk is also fixedly connected to the outside of the sleeve. The two helical gear disks mesh with each other.

[0012] Through the above technical solution, the driving mechanism drives the annular multi-hole nozzle to rotate. The motor is started by program control. This part involves software control and is existing technology. The motor starts and drives the output end to rotate, which drives the helical toothed disc to rotate, which drives another helical toothed disc to rotate, which drives the sleeve to rotate, which drives the protrusion to rotate, which drives the hollow tube to rotate, which drives the annular multi-hole nozzle to rotate, and which drives the holes to rotate. The design of the rotatable annular multi-hole nozzle, driven by the motor to rotate at low speed, forms a dynamic gas coverage layer, solves the problem of static distribution dead angles, further improves the uniformity of chlorine gas distribution, and is convenient, fast, simple and practical.

[0013] The present invention is further configured such that: the constraint mechanism includes a ring fixedly connected to the bottom of the outside of the trachea, a plurality of support legs fixedly connected to the bottom of the ring, and a slide rod fixedly connected to the top of the ring and slidably connected to the cylinder, the slide rod being arc-shaped and passing through the top of the reactor.

[0014] Through the above technical solution, the function of the constraint mechanism is to constrain the gas pipe. When chlorine gas is introduced into the gas pipe, the chlorine gas enters the hollow tube. Because the sleeve and the cylinder are connected to form a sealed environment, the possibility of chlorine gas escaping from the top is reduced, so that the chlorine gas can only be discharged from the holes, reducing resource consumption and lowering costs. The sliding rod drives the ring to move longitudinally, which in turn drives one end of the gas pipe to move longitudinally, and at the same time drives the support leg to move longitudinally. When the support leg moves downward, it presses against the inner bottom of the annular multi-hole nozzle and moves downward, causing the hollow tube to slide inside the sleeve. At this time, the spring is compressed, so that the annular multi-hole nozzle can get closer to the liquid surface, increasing the gas-liquid contact area and time, improving reaction efficiency. Moreover, the bottom of the gas pipe is always close to the inner bottom of the annular multi-hole nozzle, ensuring the efficiency of chlorine gas distribution, and can be flexibly adjusted according to the position of the liquid surface.

[0015] The present invention is further configured such that: the reset mechanism includes a groove two opened inside the sleeve, a plate two located at the top of the groove two is fixedly connected to the outside of the hollow tube, a spring is connected between the plate two and the inside of the groove two, and the two ends of the spring are fixedly connected to the plate two and the groove two respectively.

[0016] Through the above technical solution, the function of the reset mechanism is to enable the annular multi-hole nozzle to automatically reset. When the sliding rod moves downward against the annular multi-hole nozzle, the second plate on the hollow tube also moves accordingly, and compresses the spring during the movement. When the sliding rod is released and no longer against the annular multi-hole nozzle, the second plate can automatically reset under the elastic force of the spring, which drives the hollow tube to reset automatically, and drives the annular multi-hole nozzle to reset. It is convenient, quick, simple and practical.

[0017] The present invention is further configured such that: the positioning mechanism includes two fixed blocks fixedly connected to the top of the reactor, both fixed blocks being slidably connected to a slide rod, and a bolt being rotatably connected inside one of the fixed blocks, the front end of the bolt contacting and abutting against the slide rod.

[0018] Through the above technical solution, the positioning mechanism is used to fix the position of the slide rod. When the slide rod is pressed against the annular multi-hole nozzle downwards, if you want the slide rod to remain in the same position for a long time, rotate the bolt so that the front end of the bolt contacts the slide rod and abuts against it, thus fixing the slide rod between the two fixed blocks.

[0019] The beneficial effects of this utility model are as follows:

[0020] 1. This utility model achieves low-speed rotation of the annular multi-hole nozzle through a driving mechanism. The uniformly distributed holes at its bottom form a dynamic gas covering layer, effectively eliminating the dead zones of traditional static distribution, allowing chlorine gas to diffuse evenly on the liquid surface, improving gas-liquid contact uniformity by more than 40%, and significantly enhancing reaction selectivity. Through a constraint mechanism, the longitudinal position of the annular multi-hole nozzle can be flexibly adjusted to allow it to operate close to the liquid surface. This mechanism not only increases the gas-liquid contact area (expanding the effective area by 30%-50%), but also extends the contact time between chlorine gas and the reaction liquid. At the same time, the sealed structure reduces chlorine gas escape, increasing resource utilization by more than 25%.

[0021] 2. This utility model, through the synergistic action of the reset mechanism and the positioning mechanism, achieves both rapid adjustment and automatic reset of the nozzle position, and can maintain a specific working height for a long time through the locking slide bar, adapting to different liquid levels and process parameter requirements, significantly improving operational convenience and reducing equipment maintenance costs; the circular array of holes in the annular multi-hole nozzle works synergistically with the hollow tube to ensure that chlorine gas is uniformly discharged at 360°, and with the sealed design of the sleeve-cylinder, completely eliminates gas bypass escape, achieving an effective chlorine utilization rate of over 98%, and improving reaction efficiency by 35%-60% compared to traditional devices. Attached Figure Description

[0022] Figure 1 This is a first-view structural diagram of the present invention;

[0023] Figure 2 This is a second-view sectional view of the present invention;

[0024] Figure 3 for Figure 2 Schematic diagram of the structure of the reaction vessel;

[0025] Figure 4 for Figure 3 A sectional view;

[0026] Figure 5 for Figure 4 Schematic diagram of the drive mechanism;

[0027] Figure 6 for Figure 4 First-person sectional view;

[0028] Figure 7 for Figure 6 A magnified view of a section at point A in the middle;

[0029] Figure 8 for Figure 6 A magnified view of a section at point B in the middle;

[0030] Figure 9 for Figure 4 Second-view sectional view;

[0031] Figure 10 for Figure 9 A magnified view of a section at point C.

[0032] In the diagram: 1. Reactor; 2. Sleeve; 3. Annular multi-hole nozzle; 4. Drive mechanism; 401. First support; 402. Motor; 403. Helical gear disc; 5. Cylinder; 6. Gas pipe; 7. Constraint mechanism; 701. Ring; 702. Support leg; 703. Slide rod; 8. Reset mechanism; 801. Second slot; 802. Second plate; 803. Spring; 9. Positioning mechanism; 901. Fixing block; 902. Bolt; 10. Hole; 11. Hollow tube; 12. Protrusion. Detailed Implementation

[0033] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the scope of protection of the present invention.

[0034] Please see Figures 1-10 This embodiment of a chlorination apparatus for producing bromochlorohydantoin includes a reaction vessel 1 for the chlorination reaction. A sleeve 2 is rotatably connected inside the reaction vessel 1, and an annular porous nozzle 3 for distributing chlorine gas is slidably connected inside the sleeve 2. A drive mechanism 4, one end of which is connected to the sleeve 2, is fixedly connected to the inner top of the reaction vessel 1. The drive mechanism 4 includes multiple first supports 401 fixedly connected to the inner top of the reaction vessel 1, two of which are rotatably connected to the sleeve 2, and a motor 402 is installed inside the other first support 401. A helical gear disk 403 is fixedly connected to the output end of the motor 402. A helical gear disk 403 is also fixedly connected to the outside of the sleeve 2. The two helical gear disks 403... The three parts mesh with each other. The function of the drive mechanism 4 is to drive the annular multi-hole nozzle 3 to rotate. The motor 402 is started by program control. This part involves software control and is existing technology. The motor 402 starts and drives the output end to rotate, which drives the helical toothed disk 403 to rotate, drives another helical toothed disk 403 to rotate, drives the sleeve 2 to rotate, drives the protrusion 12 to rotate, drives the hollow tube 11 to rotate, drives the annular multi-hole nozzle 3 to rotate, and drives the hole 10 to rotate. The rotatable annular multi-hole nozzle 3 is designed to rotate at low speed driven by the motor 402 to form a dynamic gas covering layer, solve the problem of static distribution dead angles, and further improve the uniformity of chlorine gas distribution. It is convenient, fast, simple and practical.

[0035] like Figures 6-8As shown, a cylinder 5, which is rotatably connected to a sleeve 2, is fixedly connected to the top of the reactor 1. A gas pipe 6 is slidably connected inside the cylinder 5, with the other end of the gas pipe 6 inserted into the sleeve 2. A restraining mechanism 7 is fixedly connected to the bottom of the gas pipe 6. The restraining mechanism 7 includes a ring 701 fixedly connected to the bottom of the gas pipe 6. Multiple support legs 702 are fixedly connected to the bottom of the ring 701. A sliding rod 703, which is slidably connected to the cylinder 5, is fixedly connected to the top of the ring 701. The sliding rod 703 is arc-shaped and passes through the top of the reactor 1. The function of the restraining mechanism 7 is to restrain the gas pipe 6. When chlorine gas is introduced into the gas pipe 6, the chlorine gas enters the hollow tube 11. Because the sleeve 2 and the cylinder 5 are connected to form a sealed environment, the chlorine gas is reduced from rising. The possibility of chlorine gas being discharged from the hole 10 is minimized, reducing resource consumption and lowering costs. The sliding rod 703 drives the ring 701 to move longitudinally, which in turn drives one end of the gas pipe 6 to move longitudinally, and simultaneously drives the support leg 702 to move longitudinally. When the support leg 702 moves downward, it presses against the inner bottom of the annular multi-hole nozzle 3 and moves downward, causing the hollow tube 11 to slide inside the sleeve 2. At this time, the spring 803 is being compressed, which allows the annular multi-hole nozzle 3 to get closer to the liquid surface, increasing the gas-liquid contact area and time, improving reaction efficiency. Furthermore, the bottom of the gas pipe 6 is always close to the inner bottom of the annular multi-hole nozzle 3, ensuring efficient chlorine gas distribution and allowing for flexible adjustment based on the liquid surface position.

[0036] like Figures 6-8 As shown, a reset mechanism 8 is connected between the sleeve 2 and the annular multi-hole nozzle 3. The reset mechanism 8 includes a groove 801 inside the sleeve 2. A plate 802 located at the top of the groove 801 is fixedly connected to the outside of the hollow tube 11. A spring 803 is connected between the plate 802 and the groove 801. The two ends of the spring 803 are fixedly connected to the plate 802 and the groove 801, respectively. The function of the reset mechanism 8 is to allow the annular multi-hole nozzle 3 to automatically reset. When the sliding rod 703 moves downward against the annular multi-hole nozzle 3, the plate 802 on the hollow tube 11 also moves accordingly and compresses the spring 803 during the movement. When the sliding rod 703 is released and no longer against the annular multi-hole nozzle 3, the plate 802 can automatically reset under the elastic force of the spring 803, which drives the hollow tube 11 to automatically reset and the annular multi-hole nozzle 3 to reset. This is convenient, quick, simple and practical.

[0037] like Figures 9-10As shown, a positioning mechanism 9 is rotatably connected to the top of the cylinder 5. The positioning mechanism 9 includes two fixing blocks 901 fixedly connected to the top of the reactor 1. Both fixing blocks 901 are slidably connected to the slide rod 703. A bolt 902 is rotatably connected inside one of the fixing blocks 901. The front end of the bolt 902 contacts and abuts against the slide rod 703. The function of the positioning mechanism 9 is to fix the position of the slide rod 703. When the slide rod 703 slides downward against the annular multi-hole nozzle 3, if it is desired that the slide rod 703 can remain in the same position for a long time, the bolt 902 is rotated so that the front end of the bolt 902 contacts and abuts against the slide rod 703, thus fixing the slide rod 703 between the two fixing blocks 901.

[0038] like Figures 1-10 As shown, the bottom of the annular multi-hole nozzle 3 has multiple holes 10 for distributing chlorine gas. The annular multi-hole nozzle 3 is hollow inside, and a hollow tube 11 is fixedly connected to the top of the annular multi-hole nozzle 3. The outside of the hollow tube 11 is slidably connected to the inside of the sleeve 2, and a protrusion 12 located inside the sleeve 2 is fixedly connected to the outside of the hollow tube 11. The gas pipe 6 is inserted into the hollow tube 11. The holes 10 at the bottom of the annular multi-hole nozzle 3 are arranged in a circular equidistant array, which facilitates the uniform distribution of chlorine gas, improves the uniformity of chlorine gas distribution, increases the gas-liquid contact area, and improves the reaction efficiency. Chlorine gas is introduced into the hollow tube 11 through the gas pipe 6, and then into the annular multi-hole nozzle 3 through the hollow tube 11. The chlorine gas is then distributed through the holes 10. The function of the protrusion 12 is to allow the hollow tube 11 to slide inside the sleeve 2, and when the sleeve 2 rotates, the protrusion 12 will also drive the hollow tube 11 to rotate, which is convenient, quick, simple and practical.

[0039] In use, this invention achieves efficient chlorination through dynamic gas distribution and an adjustable emission structure. Firstly, dynamic chlorine gas distribution: the starting motor 402 drives the helical gear disc 403 to mesh and rotate the annular porous nozzle 3 at low speed within the reactor 1. The evenly spaced holes 10 at the bottom of the annular porous nozzle 3 form a dynamic gas covering layer as it rotates, eliminating dead zones in traditional static distribution and ensuring uniform diffusion of chlorine gas on the liquid surface, thus improving gas-liquid contact uniformity. Secondly, chlorine emission position adjustment: the sliding rod 703 drives the constraint mechanism 7 to move longitudinally, causing the support leg 702 at the bottom of the gas pipe 6 to push the annular porous nozzle 3 up and down along the sleeve 2. When the support leg 702 presses down on the annular porous nozzle 3, its position can be close to the liquid surface, increasing... The effective area of ​​the large chlorine emission extends the gas-liquid contact time. After operation, the reset spring 803 pushes the annular multi-hole nozzle 3 to automatically return to its original position, achieving flexible adjustment and rapid recovery. Thirdly, chlorine is directionally transported, with chlorine entering the hollow tube 11 through the gas pipe 6 and exiting in a circular array through the holes 10 at the bottom of the annular multi-hole nozzle 3. The sealed sleeve 2 and cylinder 5 structure prevent gas escape, ensuring that all chlorine enters the reaction system. The position of the slide bar 703 is fixed by the positioning bolt 902, which can maintain the nozzle at a specific working height for a long time to adapt to different liquid levels or process parameters. Through the synergistic effect of rotational distribution and position adjustment, the problems of uneven chlorine distribution, local excess or deficiency are solved, significantly improving the chlorination reaction efficiency and raw material utilization rate.

[0040] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A chlorination device for bromochlorohydantoin production, comprising a reactor (1) for a chlorination reaction, characterized in that: The sleeve (2) is rotationally connected in the reactor (1), an annular porous nozzle (3) for distributing chlorine is slidably connected in the sleeve (2), the inner top of the reactor (1) is fixedly connected with a driving mechanism (4) having one end connected with the sleeve (2); The inner top of the reactor (1) is fixedly connected with a cylinder (5) rotationally connected with the sleeve (2), a trachea (6) is slidably connected in the cylinder (5), the other end of the trachea (6) is inserted into the sleeve (2), and the bottom of the trachea (6) is fixedly connected with a constraint mechanism (7); The sleeve (2) and the annular porous nozzle (3) are connected with a reset mechanism (8), and the top of the cylinder (5) is rotationally connected with a positioning mechanism (9).

2. The chlorination device for bromochlorohydrin production according to claim 1, characterized by: A plurality of holes (10) for distributing chlorine are formed in the bottom of the annular porous nozzle (3), the annular porous nozzle (3) is hollow, and the top of the annular porous nozzle (3) is fixedly connected with a hollow tube (11) in communication therewith, the outside of the hollow tube (11) is slidably connected with the inside of the sleeve (2), and the outside of the hollow tube (11) is fixedly connected with a protrusion (12) slidably located in the inside of the sleeve (2), and the trachea (6) is inserted into the hollow tube (11).

3. The chlorination device for bromochlorohydrin production according to claim 1, characterized by: The driving mechanism (4) comprises a plurality of first supports (401) fixedly connected to the inner top of the reactor (1), two of the first supports (401) are rotationally connected with the sleeve (2), another first support (401) is provided with a motor (402) mounted therein, the output end of the motor (402) is fixedly connected with a helical gear (403), and the outside of the sleeve (2) is also fixedly connected with a helical gear (403), and the two helical gears (403) are meshed with each other.

4. The chlorination device for producing bromochlorohydantoin according to claim 1, characterized by: The constraint mechanism (7) comprises a circular ring (701) fixedly connected to the bottom of the outside of the trachea (6), a plurality of supporting legs (702) are fixedly connected to the bottom of the circular ring (701), a slide rod (703) slidably connected with the cylinder (5) is fixedly connected to the top of the circular ring (701), and the slide rod (703) is in the shape of a circular arc and penetrates through the top of the reactor (1).

5. The chlorination device for producing bromochlorohydantoin according to claim 2, characterized by: The reset mechanism (8) comprises a groove two (801) formed in the inside of the sleeve (2), a plate two (802) is fixedly connected to the top of the groove two (801) outside of the hollow tube (11), a spring (803) is connected between the plate two (802) and the inside of the groove two (801), and the two ends of the spring (803) are fixedly connected with the plate two (802) and the groove two (801) respectively.

6. A chlorination device for bromochlorohydrin production according to claim 4, characterized in that: The positioning mechanism (9) comprises two fixed blocks (901) fixedly connected to the top of the reactor (1), the two fixed blocks (901) are slidably connected with the slide rod (703), one of the fixed blocks (901) is rotationally connected with a bolt (902), and the front end of the bolt (902) is in contact with the slide rod (703).

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