Reaction kettle for bromine production with high chlorine utilization rate

Abstract

A bromine production reaction kettle with high chlorine utilization rate relates to the technical field of bromine production, and comprises a fixedly arranged reaction kettle body, a first-stage reaction assembly and a second-stage reaction assembly are vertically arranged in the reaction kettle body, the first-stage reaction assembly comprises a lower rotating pipe which is coaxial with the reaction kettle body and is rotatably arranged, and the second-stage reaction assembly comprises an upper rotating pipe which is coaxial with the reaction kettle body; the lower end opening of the lower rotating pipe is sealed, a plurality of exhaust pipes symmetrically arranged along the axial section of the lower rotating pipe are vertically arranged on the outer wall of the lower rotating pipe side by side, one end of each exhaust pipe is communicated with an inner cavity of the lower rotating pipe, the other end of each exhaust pipe is sealed, and a plurality of exhaust holes communicated with the inner cavity of the exhaust pipe are evenly distributed in the outer wall of each exhaust pipe in the axial direction. The reaction kettle for bromine production solves the problems that the contact time of chlorine and bittern is short when the existing reaction kettle for bromine production is used for producing bromine, the chlorine is not completely utilized, and the chlorine is wasted; the chlorine and the bittern cannot be in uniform contact, so that the complete reaction time of the bittern is long, and the bromine production efficiency is influenced.

Description

Technical Field

[0001] The utility model relates to the technical field of bromine production, in particular to a reaction kettle for bromine production with high chlorine utilization rate. Background Art

[0002] Bromine is a kind of important material in the chemical industry, mainly used for preparing bromides, and used as common analytical reagents, oxidants, absorbents for ethylene and heavy hydrocarbons, and brominating agents for organic synthesis in the fields of medicine, pesticides, dyes, spices, photographic materials, fire extinguishing agents, mineral processing, metallurgy, leather tanning, water purification, etc.

[0003] In the bromine production process, chlorine gas needs to be introduced into bittern containing bromine element. The bromide ions in the bittern can be oxidized into elemental bromine after oxidation by chlorine gas. The reaction between chlorine gas and brine needs to be carried out in the corresponding reactor.

[0004] The existing bromine production reactors gradually exposed their shortcomings during use, mainly in the following aspects:

[0005] When bittern reacts with chlorine, an air inlet pipe containing chlorine is usually inserted into the bittern solution in the reactor to react with the bittern. After entering the bittern, the chlorine moves upward rapidly, resulting in a short contact time between the chlorine and the bittern. The chlorine is not fully utilized, resulting in a waste of chlorine. In addition, the chlorine introduced into the bittern solution flows in streams, resulting in uneven contact between the chlorine and the bittern, which takes a long time for the bittern to react completely, affecting the production efficiency of bromine.

[0006] In summary, the prior art obviously has inconveniences and defects in practical use, so it is necessary to improve it. Utility Model Content

[0007] In view of the defects in the prior art, the technical problem to be solved by the utility model is to provide a reactor for bromine production with high chlorine utilization rate, which can increase the contact time between chlorine and bittern solution and improve the utilization rate of chlorine, and at the same time can also achieve uniform contact between chlorine and bittern, thereby improving the production efficiency of bromine.

[0008] In order to solve the above problems, the utility model provides the following technical solutions:

[0009] A reactor for bromine production with high chlorine utilization rate comprises a fixed reactor body, wherein a primary reaction component and a secondary reaction component are vertically arranged inside the reactor body.

[0010] The primary reaction component and the secondary reaction component can both increase the contact time between chlorine and bittern solution, thereby improving the utilization rate of chlorine; the primary reaction component can also achieve uniform contact between chlorine and bittern solution, thereby improving the production efficiency of bromine;

[0011] The primary reaction assembly comprises a lower rotating tube coaxial with the reactor body and rotatably arranged, the lower port of the lower rotating tube is sealed, and a plurality of exhaust pipes symmetrically arranged along the axial section of the lower rotating tube are vertically arranged in parallel on the outer wall of the lower rotating tube.

[0012] One end of the exhaust pipe is connected to the inner cavity of the lower rotating tube, and the other end is sealed. A plurality of exhaust holes connected to the inner cavity are evenly distributed on the outer wall of the exhaust pipe along the axial direction, and the exhaust holes are all facing the bottom of the reactor body.

[0013] The outer wall of the lower rotating tube is also vertically and side by side with a plurality of stirring blades symmetrically arranged along its axial section, and the exhaust pipe is perpendicular to the end surface of the stirring blades.

[0014] When the lower rotating tube rotates, the exhaust pipe and the stirring blades rotate, and the chlorine in the exhaust pipe is continuously discharged to the bittern in the reactor body through the exhaust hole, and the stirring blades evenly mix the chlorine and the bittern.

[0015] As an optimized solution, a plurality of fixed circular plates rotatably connected to the outer wall of the lower rotating tube are mounted on the outer wall of the lower rotating tube, the fixed circular plates and the stirring blades are vertically alternately arranged, and the side walls of the fixed circular plates are fixedly connected to the inner wall of the reactor body.

[0016] The top of the fixed circular plate is evenly distributed with a plurality of ventilation holes which penetrate therethrough. When the chlorine gas discharged from the exhaust pipe passes upward through the fixed circular plate, the passing speed of the chlorine gas can be reduced, thereby increasing the contact time between the chlorine gas and the bittern.

[0017] As an optimized solution, the top and bottom of the reactor body are respectively provided with an air outlet pipe and a liquid outlet pipe connected to its inner cavity, and the outer wall of the reactor body is respectively provided with a liquid adding pipe and a ventilation pipe connected to its inner cavity, and the ventilation pipe is connected to the upper port of the lower rotating tube.

[0018] As an optimized solution, a rotatably arranged upper rotating tube is coaxially arranged inside the reactor body, the upper rotating tube is located above the lower rotating tube, the lower port of the upper rotating tube is sealed, and the upper port of the upper rotating tube passes through the reactor body and is rotatably connected thereto.

[0019] The outer wall of the upper rotating tube is evenly distributed along its circumference with three connecting tubes connected to its inner cavity, one end of the connecting tube is sealed, and the outer wall of the connecting tube is evenly distributed along the axial direction with three atomizing nozzles with water spray ports arranged downward.

[0020] As an optimized solution, a water pump is fixedly provided on the side of the reactor body, and the water inlet and the water outlet of the water pump are respectively fixedly connected with a liquid inlet pipe and a liquid discharge pipe, one end of the liquid inlet pipe passes through the reactor body and is connected with its inner cavity, and the liquid discharge pipe is connected with the upper rotating pipe.

[0021] The water pump can extract the bittern solution at the bottom of the reactor body into the upper rotating tube.

[0022] As an optimized solution, a filling layer is coaxially fixed inside the reactor body and abuts against its inner wall. The filling layer is located between the upper rotating tube and the lower rotating tube. After the bitter brine solution drips onto the filling layer, it disperses and flows, fully contacting the upward flowing chlorine.

[0023] As an optimized solution, a gas rotary joint is fixedly provided below the filling layer, the rotating end of the gas rotary joint is connected to the upper port of the lower rotary tube, and the other end of the gas rotary joint is connected to the ventilation pipe.

[0024] As an optimized solution, a gas pressure pump is fixedly provided on the side of the reactor body, an air inlet of the gas pressure pump is fixedly connected to an air inlet pipe, one end of the air inlet pipe is connected to a chlorine gas source, and an air outlet of the gas pressure pump is connected to a ventilation pipe.

[0025] As an optimized solution, a liquid rotary joint is fixedly provided on the top of the reactor body, the rotating end of the liquid rotary joint is connected to the upper port of the upper rotary tube, and the other end of the liquid rotary joint is connected to the drain pipe.

[0026] As an optimized solution, a driven wheel is fixedly mounted on the outer wall of the upper rotating tube, and a driving wheel is provided on the top of the reactor body for rotation along the plumb line, and the driving wheel is connected to the driven wheel through a transmission belt.

[0027] Compared with the prior art, the beneficial effects of the utility model are:

[0028] 1. The contact time between chlorine and bittern solution can be increased by coordinating the primary reaction component with the secondary reaction component, thereby improving the utilization rate of chlorine;

[0029] 2. The primary reaction component can also improve the contact uniformity between chlorine and bittern solution, thereby accelerating the production efficiency of bromine. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the specific implementation of the utility model or the technical solution in the prior art, the following is a brief introduction to the drawings required for the specific implementation or the prior art description. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, each element or part is not necessarily drawn according to the actual scale.

[0031] Figure 1 It is a schematic diagram of the structure of the utility model;

[0032] Figure 2 This is a schematic diagram of the structure of the filling layer of the utility model;

[0033] Figure 3 It is a schematic diagram of the structure of the exhaust hole of the utility model;

[0034] Figure 4 It is a structural schematic diagram of the reactor body of the utility model.

[0035] In the figure: 1-control motor; 2-drive shaft; 3-inlet pipe; 4-gas booster pump; 5-lower rotating tube; 6-primary reaction component; 7-ventilation pipe; 8-fixed plate; 9-secondary reaction component; 10-reactor body; 11-outlet pipe; 12-upper rotating tube; 13-support plate; 14-liquid rotary joint; 15-connecting pipe; 16-atomizing nozzle; 17-filling layer; 18-liquid adding pipe; 19-gas rotary joint; 20-fixed circular plate; 21-vent; 22-stirring blade; 23-exhaust pipe; 24-liquid outlet pipe; 25-driven wheel; 26-transmission belt; 27-drive motor; 28-drive wheel; 29-liquid discharge pipe; 30-inlet pipe; 31-water pump; 32-exhaust hole. DETAILED DESCRIPTION

[0036] The following embodiments of the technical solution of the utility model are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the utility model, and are therefore only used as examples, and cannot be used to limit the protection scope of the utility model.

[0037] like Figures 1 to 4 As shown, a bromine production reactor with high chlorine utilization rate includes a fixed reactor body 10, and a primary reaction component 6 and a secondary reaction component 9 are vertically arranged inside the reactor body 10.

[0038] Both the primary reaction component 6 and the secondary reaction component 9 can increase the contact time between chlorine and bittern solution, thereby improving the utilization rate of chlorine; the primary reaction component 6 can also achieve uniform contact between chlorine and bittern solution, thereby improving the production efficiency of bromine;

[0039] The primary reaction assembly 6 includes a lower rotating tube 5 coaxially arranged with the reactor body 10 and rotatably arranged. The lower end of the lower rotating tube 5 is sealed. A plurality of exhaust pipes 23 are vertically arranged in parallel on the outer wall of the lower rotating tube 5 and symmetrically arranged along the axial section thereof.

[0040] One end of the exhaust pipe 23 is connected to the inner cavity of the lower rotating tube 5, and the other end is sealed. A plurality of exhaust holes 32 connected to the inner cavity are evenly distributed on the outer wall of the exhaust pipe 23 along the axial direction, and the exhaust holes 32 are all facing the bottom of the reactor body 10.

[0041] A plurality of stirring blades 22 are vertically arranged side by side on the outer wall of the lower rotating tube 5 and are symmetrically arranged along the axial section thereof. The exhaust pipe 23 is perpendicular to the end surface of the stirring blades 22.

[0042] When the lower rotating tube 5 rotates, the exhaust pipe 23 and the stirring blade 22 rotate, and the chlorine in the exhaust pipe 23 is continuously discharged to the bittern in the reactor body 10 through the exhaust hole 32, and the stirring blade 22 evenly mixes the chlorine and the bittern.

[0043] A plurality of fixed circular plates 20 are mounted on the outer wall of the lower rotating tube 5 and are rotatably connected thereto. The fixed circular plates 20 and the stirring blades 22 are vertically alternately arranged. The side walls of the fixed circular plates 20 are fixedly connected to the inner wall of the reactor body 10.

[0044] The top of the fixed circular plate 20 is uniformly provided with a plurality of ventilation holes 21 penetrating therethrough. When the chlorine gas discharged from the exhaust pipe 23 passes upward through the fixed circular plate 20, the passing speed of the chlorine gas can be reduced, thereby increasing the contact time between the chlorine gas and the bittern.

[0045] The top and bottom of the reactor body 10 are respectively provided with an air outlet pipe 11 and a liquid outlet pipe 24 connected to its inner cavity. The outer wall of the reactor body 10 is respectively provided with a liquid adding pipe 18 and a ventilation pipe 7 connected to its inner cavity. The ventilation pipe 7 is connected to the upper end of the lower rotating pipe 5.

[0046] An upper rotating tube 12 is coaxially arranged inside the reactor body 10 and is rotatably arranged. The upper rotating tube 12 is located above the lower rotating tube 5. The lower end of the upper rotating tube 12 is sealed. The upper end of the upper rotating tube 12 passes through the reactor body 10 and is rotatably connected thereto.

[0047] Three connecting pipes 15 connected to the inner cavity are evenly distributed on the outer wall of the upper rotating tube 12 along its circumference. One end of the connecting pipe 15 is sealed. Three atomizing nozzles 16 with water spray ports arranged downward are evenly distributed on the outer wall of the connecting pipe 15 along the axial direction.

[0048] A water pump 31 is fixedly provided on the side of the reactor body 10. The water inlet and the water outlet of the water pump 31 are respectively fixedly connected with a liquid inlet pipe 30 and a liquid discharge pipe 29. One end of the liquid inlet pipe 30 passes through the reactor body 10 and is connected to the inner cavity thereof. The liquid discharge pipe 29 is connected to the upper rotating pipe 12.

[0049] The water pump 31 draws the bittern solution at the bottom of the reactor body 10 into the upper rotating tube 12, and the atomizing nozzle 16 atomizes the bittern solution and sprays it out, and contacts with the upwardly flowing chlorine gas, further increasing the contact time between the chlorine gas and the bittern solution.

[0050] A packing layer 17 is coaxially fixed inside the reactor body 10 and abuts against its inner wall. The packing layer 17 is located between the upper rotating tube 12 and the lower rotating tube 5. After the bittern solution drips onto the packing layer 17, it disperses and flows, and fully contacts with the chlorine gas flowing upward.

[0051] A gas rotary joint 19 is fixedly provided below the filling layer 17 . The rotating end of the gas rotary joint 19 is connected to the upper end of the lower rotary pipe 5 , and the other end of the gas rotary joint 19 is connected to the ventilation pipe 7 .

[0052] The gas rotary joint 19 is fixedly connected to the reactor body 10 through a plurality of fixing plates 8 .

[0053] A gas booster pump 4 is fixedly provided on the side of the reactor body 10 , an air inlet of the gas booster pump 4 is fixedly connected to an air inlet pipe 3 , one end of the air inlet pipe 3 is connected to a chlorine gas source, and an air outlet of the gas booster pump 4 is connected to a vent pipe 7 .

[0054] A driving shaft 2 rotatably arranged along a vertical line is penetrated through the bottom of the reactor body 10 , and the driving shaft 2 is fixedly connected to the lower rotating tube 5 .

[0055] A control motor 1 is fixedly provided at the bottom of the reactor body 10 , and an output end of the control motor 1 is fixedly connected to a driving shaft 2 .

[0056] A liquid rotary joint 14 is fixedly provided on the top of the reactor body 10 . The rotating end of the liquid rotary joint 14 is connected to the upper end of the upper rotary tube 12 , and the other end of the liquid rotary joint 14 is connected to the drain pipe 29 .

[0057] The liquid rotary joint 14 is fixedly connected to the reactor body 10 via the support plate 13 .

[0058] A driven wheel 25 is fixedly mounted on the outer wall of the upper rotating tube 12 , and a driving wheel 28 is provided on the top of the reactor body 10 to rotate along the vertical line. The driving wheel 28 is connected to the driven wheel 25 through a transmission belt 26 .

[0059] A driving motor 27 is also fixedly provided on the top of the reactor body 10 , and an output end of the driving motor 27 is fixedly connected to a driving wheel 28 .

[0060] The working principle of this device is:

[0061] When producing bromine, bittern solution is added to the reactor body 10 through the liquid adding pipe 18. After the bittern solution is added, the control motor 1 drives the driving shaft 2 and the lower rotating tube 5 to rotate, thereby driving the exhaust pipe 23 and the stirring blade 22 to rotate. At the same time, chlorine enters the gas pressure pump 4 through the air inlet pipe 3. The gas pressure pump 4 pressurizes the chlorine. The pressurized chlorine passes through the vent pipe 7, the gas rotary joint 19, the lower rotating tube 5 and the exhaust pipe 23 in sequence, and is finally sprayed into the bittern solution through the exhaust hole 32 on the exhaust pipe 23. The stirring blade 22 stirs the bittern solution, so that the chlorine is in uniform contact with the bittern solution, thereby improving the contact uniformity between the bittern solution and the chlorine, and accelerating the production efficiency of bromine.

[0062] The chlorine gas discharged from the exhaust hole 32 flows upward. When the chlorine gas passes through the vent hole 21 on the fixed circular plate 20, the flow rate of the chlorine gas can be slowed down, thereby preliminarily increasing the contact time between the chlorine gas and the bittern solution. The chlorine gas separated from the bittern solution continues to flow upward. The water pump 31 extracts the bittern solution at the bottom of the reactor body 10. The bittern solution passes through the liquid inlet pipe 30, the water pump 31, the liquid discharge pipe 29, the liquid rotary joint 14, the upper rotary pipe 12 and the connecting pipe 15 in sequence, and is sprayed out by the atomizing nozzle 16. At the same time, the driving motor 27 drives the driving wheel 28 and the transmission belt 2 6. The driven wheel 25 and the upper rotating tube 12 rotate, thereby controlling the connecting tube 15 and the atomizing nozzle 16 to rotate. The atomizing nozzle 16 sprays the bittern solution downward uniformly. The atomized bittern solution finally drips into the filling layer 17. The bittern solution disperses and flows in the filling layer 17. The chlorine gas fully contacts the bittern solution when passing through the filling layer 17. The chlorine gas continues to move upward through the filling layer 17 and contacts the bittern solution sprayed from the atomizing nozzle 16 again, thereby further increasing the contact time between the chlorine gas and the bittern solution, improving the utilization rate of the chlorine gas, and reducing waste.

[0063] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the utility model, and they should all be included in the scope of the claims and specification of the utility model.

Claims

1. A bromine production reactor with high chlorine utilization rate, characterized in that: The invention comprises a fixedly arranged reactor body (10), wherein a primary reaction component (6) and a secondary reaction component (9) are arranged vertically inside the reactor body (10). The primary reaction component (6) and the secondary reaction component (9) can both increase the contact time between chlorine and bittern solution, thereby improving the utilization rate of chlorine; the primary reaction component (6) can also achieve uniform contact between chlorine and bittern solution, thereby improving the bromine production efficiency; The primary reaction assembly (6) comprises a lower rotating tube (5) which is coaxial with the reactor body (10) and is rotatably arranged, the lower end of the lower rotating tube (5) being sealed, and a plurality of exhaust pipes (23) which are symmetrically arranged along the axial section of the lower rotating tube (5) being arranged vertically in parallel on the outer wall of the lower rotating tube (5). One end of the exhaust pipe (23) is connected to the inner cavity of the lower rotating tube (5), and the other end is sealed. A plurality of exhaust holes (32) connected to the inner cavity of the exhaust pipe (23) are evenly distributed along the axial direction on the outer wall of the exhaust pipe (23), and the exhaust holes (32) are all facing the bottom of the reactor body (10). The outer wall of the lower rotating tube (5) is also provided with a plurality of stirring blades (22) arranged symmetrically along its axial section in a vertical parallel relationship, and the exhaust pipe (23) is perpendicular to the end surface of the stirring blades (22). When the lower rotating tube (5) rotates, the exhaust pipe (23) and the stirring blade (22) rotate, and the chlorine gas in the exhaust pipe (23) is continuously discharged to the bittern in the reactor body (10) through the exhaust hole (32), and the stirring blade (22) evenly mixes the chlorine gas and the bittern.

2. A bromine production reactor with high chlorine utilization rate according to claim 1, characterized in that: A plurality of fixed circular plates (20) are mounted on the outer wall of the lower rotating tube (5) and are rotatably connected thereto. The fixed circular plates (20) and the stirring blades (22) are vertically alternately arranged. The side walls of the fixed circular plates (20) are fixedly connected to the inner wall of the reactor body (10). The top of the fixed circular plate (20) is evenly distributed with a plurality of ventilation holes (21) extending therethrough. When the chlorine gas discharged from the exhaust pipe (23) passes upward through the fixed circular plate (20), the passing speed of the chlorine gas can be reduced, thereby increasing the contact time between the chlorine gas and bittern.

3. A bromine production reactor with high chlorine utilization rate according to claim 2, characterized in that: The top and bottom of the reactor body (10) are respectively provided with an air outlet pipe (11) and a liquid outlet pipe (24) connected to the inner cavity thereof; the outer wall of the reactor body (10) is respectively provided with a liquid adding pipe (18) and a vent pipe (7) connected to the inner cavity thereof; the vent pipe (7) is connected to the upper end port of the lower rotating tube (5).

4. A bromine production reactor with high chlorine utilization rate according to claim 3, characterized in that: An upper rotating tube (12) is coaxially arranged inside the reactor body (10) and is rotatably arranged. The upper rotating tube (12) is located above the lower rotating tube (5). The lower end of the upper rotating tube (12) is sealed. The upper end of the upper rotating tube (12) passes through the reactor body (10) and is rotatably connected thereto. Three connecting pipes (15) connected to the inner cavity of the upper rotating pipe (12) are evenly distributed on the outer wall thereof along its circumference, one end of the connecting pipe (15) is sealed, and three atomizing nozzles (16) with water spraying ports arranged downward are evenly distributed on the outer wall of the connecting pipe (15) along its axial direction.

5. A bromine production reactor with high chlorine utilization rate according to claim 4, characterized in that: A water pump (31) is fixedly provided on the side of the reactor body (10); a water inlet and a water outlet of the water pump (31) are respectively fixedly connected to a liquid inlet pipe (30) and a liquid discharge pipe (29); one end of the liquid inlet pipe (30) passes through the reactor body (10) and is connected to the inner cavity thereof; the liquid discharge pipe (29) is connected to the upper rotating pipe (12). The water pump (31) can extract the bittern solution at the bottom of the reactor body (10) into the upper rotating tube (12).

6. A bromine production reactor with high chlorine utilization rate according to claim 5, characterized in that: A filling layer (17) is coaxially fixed inside the reactor body (10) and abuts against the inner wall thereof. The filling layer (17) is located between the upper rotating tube (12) and the lower rotating tube (5). After the bittern solution drips onto the filling layer (17), it disperses and flows, and fully contacts with the chlorine gas flowing upward.

7. A bromine production reactor with high chlorine utilization rate according to claim 6, characterized in that: A gas rotary joint (19) is fixedly provided below the filling layer (17), the rotating end of the gas rotary joint (19) is connected to the upper end of the lower rotary tube (5), and the other end of the gas rotary joint (19) is connected to the ventilation pipe (7).

8. A bromine production reactor with high chlorine utilization rate according to claim 7, characterized in that: A gas pressure pump (4) is fixedly provided on the side of the reactor body (10); an air inlet of the gas pressure pump (4) is fixedly connected to an air inlet pipe (3); one end of the air inlet pipe (3) is connected to a chlorine gas source; and an air outlet of the gas pressure pump (4) is connected to a ventilation pipe (7).

9. A bromine production reactor with high chlorine utilization rate according to claim 8, characterized in that: A liquid rotary joint (14) is fixedly provided on the top of the reactor body (10), the rotating end of the liquid rotary joint (14) is connected to the upper port of the upper rotary tube (12), and the other end of the liquid rotary joint (14) is connected to the drain pipe (29).

10. A bromine production reactor with high chlorine utilization rate according to claim 9, characterized in that: A driven wheel (25) is fixedly mounted on the outer wall of the upper rotating tube (12), and a driving wheel (28) is provided on the top of the reactor body (10) to rotate along a vertical line. The driving wheel (28) is connected to the driven wheel (25) via a transmission belt (26).

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