Bromine purification device
By using a 16-square-meter reboiler and a silicon carbide heat exchanger, combined with automated control methods, the safety and production efficiency issues of the bromine purification unit were solved, achieving continuous automated production of bromine and improved safety.
Patent Information
- Application Number
- CN202422634133.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-30
- Publication Date
- 2025-10-31
- Estimated Expiration
- 2034-10-30
AI Technical Summary
Existing bromine purification equipment suffers from problems such as corrosive leakage of the vessel body, low steam utilization efficiency, poor temperature control, and accumulation of organic matter, which affects production efficiency and safety. Furthermore, high-boiling-point substances and high-viscosity substances are difficult to remove, resulting in poor bromine quality.
A 16-square-meter reboiler was used to replace the 3000L reactor, and a silicon carbide heat exchanger was used to replace the glass-lined and glass heat exchangers. Pneumatic shut-off valves and emergency receiving tanks were added, and automatic control was achieved by combining pressure and temperature transmitters and level gauges to optimize the bromine purification process.
It improved the safety and production efficiency of the bromine purification unit, realized the continuous and automated production of bromine, enhanced the heat exchange effect and safety, reduced the bromine capacity, and avoided equipment leakage and corrosion accidents.
Smart Images
Figure CN223490422U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of bromine purification technology, specifically a bromine purification device. Background Technology
[0002] The bromine purification unit is suitable for further purification of bromine produced by the original blowing method and bromine produced from bromine-containing waste liquid. Previously, a reaction vessel was used as the heating device. The vessel's inner anti-corrosion layer was glass-lined, and its large volume meant it held a large amount of bromine. Corrosion and leakage from the vessel could adversely affect personnel, equipment, and the environment. The reaction vessel jacket heating and vaporizing of bromine had a small heat exchange area, high steam consumption, and difficulty in controlling the jacket pressure. Steam condensate easily accumulated in the jacket, causing water hammer. Furthermore, steam utilization efficiency was low, and the internal temperature was difficult to control, with excessively high temperatures in a short period. Because purification was intermittent, organic matter easily accumulated on the surface, affecting production efficiency. High-boiling-point and high-viscosity substances could not be discharged in time and easily entered the production system, affecting the quality of the purified bromine. The original method used a combination of glass-lined disc condensers and glass condensers. Bromine is highly corrosive; after the glass enamel cracked, the corrosion rate of the bromine on the underlying steel components accelerated, easily leading to perforation and leakage accidents. Glass condensers are weak and easily break when struck by an object, causing injury or leakage.
[0003] Therefore, in order to correct the above-mentioned defects, we propose a bromine purification device. Utility Model Content
[0004] The technical problem solved by this utility model is to provide a bromine purification device.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a bromine purification device, comprising a drying tower, a heat exchanger, a reboiler, a storage tank, a weighing meter, a level meter, and a flow meter, and further comprising a purification tower. The heat exchanger includes a 20-square-meter heat exchanger 4 and a 10-square-meter heat exchanger. The bottom of the purification tower is connected to the bottom of the reboiler, the lower middle part of the purification tower is connected to the top of the reboiler, the top of the purification tower is connected to the top of the 20-square-meter heat exchanger, the bottom of the 20-square-meter heat exchanger is connected to the storage tank, the bottom end cap of the 20-square-meter heat exchanger is connected to the top of the 10-square-meter heat exchanger, and the bottom of the 10-square-meter heat exchanger is connected to the storage tank.
[0006] Furthermore, a pneumatic shut-off valve and a temperature controller are installed on the pipeline connecting the bottom of the purification tower to the bottom of the reboiler. The pneumatic shut-off valve is connected to an emergency receiving tank, which is equipped with an emergency receiving pump.
[0007] Furthermore, a pressure and temperature transmitter is installed at the top of the purification tower, and a differential pressure level gauge and a thermometer are installed at the bottom of the purification tower.
[0008] Furthermore, the heating pipe of the reboiler is equipped with a pneumatic regulating valve and a pneumatic shut-off valve.
[0009] Furthermore, the heat exchanger and reboiler adopt a new type of heat exchange material, silicon carbide switching tube.
[0010] Compared with existing technologies, the beneficial effects of this invention are as follows: This device uses a 16-square-meter reboiler instead of a 3000L reactor, greatly reducing the amount of bromine stored in the container and improving safety; it uses silicon carbide tubes instead of glass-lined inner walls, as silicon carbide is more corrosion-resistant and has a more outstanding heat exchange effect; the reboiler can discharge some of the entrained high-boiling-point and high-viscosity bromine according to temperature changes, and organic matter no longer accumulates on the surface; pressure and temperature transmitters are added to the upper part of the purification tower; differential pressure level gauges and temperature transmitters are added to the lower part of the purification tower, enabling automated and continuous production. Compared with the previous intermittent purification in the reactor, it is more operable and safer; the use of silicon carbide heat exchangers instead of the original glass-lined and glass heat exchangers provides better and safer heat exchange; an emergency receiving tank is added, which, in addition to receiving the bromine discharged normally from the reboiler, can also serve as an emergency receiving device for equipment damaged in the system that holds bromine. Attached Figure Description
[0011] Figure 1 This is a schematic diagram of the overall structure of this utility model.
[0012] Numbering on the map:
[0013] 1. Purification tower; 2. Drying tower; 3. Reboiler; 4. 20 square meter heat exchanger; 5. 10 square meter heat exchanger; 6. Storage tank; 7. Pneumatic shut-off valve; 8. Temperature controller; 9. Emergency receiving tank; 10. Emergency receiving pump; 11. Pressure and temperature transmitters; 12. Differential pressure level gauge; 13. Heating pipeline. Detailed Implementation
[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0015] This utility model provides a technical solution:
[0016] Please see Figure 1A bromine purification apparatus includes a purification tower 1, a drying tower 2, a reboiler 3, a heat exchanger, a storage tank 6, and other main components, as well as matching auxiliary components such as pressure transmitters, temperature transmitters, weighing meters, level meters, and flow meters. The overall structure is consistent with existing technologies, and the connections between the components are all existing technologies, which will not be described in detail in this case.
[0017] The differences are as follows: replacing the 16 square meter reboiler 3 greatly reduces the bromine capacity in the device and increases the heat exchange area of the liquid phase; using the 10 square meter heat exchanger 5 and the 20 square meter heat exchanger 4 increases the overall heat exchange area of the gas phase, making it more energy-efficient; the reboiler 3 and the heat exchangers use a new heat exchange material, silicon carbide tubes, which are more corrosion-resistant and safer.
[0018] The liquid bromine first enters the purification tower 1 at the predetermined position for preheating, and then enters the bottom of the reboiler 3 through the bottom of the purification tower 1 for heating and evaporation. The evaporated gas phase enters the purification tower 1 again to continue rising, and enters the 20 square meter heat exchanger 4 through the upper part of the purification tower 1 for primary condensation. The condensed bromine enters the purified storage tank 6 from the bottom of the 20 square meter heat exchanger 4 for temporary storage.
[0019] The gaseous bromine that is not completely cooled in the 20 square meter heat exchanger 4 enters the top of the 10 square meter heat exchanger 5 through the side opening of the bottom end cap of the heat exchanger for secondary condensation. The condensed bromine enters the purified storage tank 6 through the bottom of the 10 square meter heat exchanger 5 for temporary storage.
[0020] A pneumatic shut-off valve 7 and a temperature controller 8 are installed at the bottom of the reboiler 3 and the part connecting the purification tower 1. The pneumatic shut-off valve is connected to the emergency receiving tank 9. By monitoring the temperature at the bottom of the reboiler 3, the pneumatic shut-off valve 7 is opened to discharge some bromine and high-boiling substances into the emergency receiving tank 9, thereby maintaining a constant temperature and preventing it from exceeding the set value.
[0021] A pressure and temperature transmitter 11 is added to the top of the purification tower 1, a differential pressure level gauge 12 and a thermometer are added to the lower part of the purification tower 1, and a pneumatic regulating valve and a pneumatic shut-off valve are added to the steam heating pipe 13 of the reboiler 3 to automate the production.
[0022] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A bromine purification apparatus, comprising a drying tower (2), a heat exchanger, a reboiler (3), a storage tank (6), a weighing meter, a level meter, and a flow meter, characterized in that: It also includes a purification tower (1), the heat exchangers include a 20 square heat exchanger (4) and a 10 square heat exchanger (5), the bottom of the purification tower (1) is connected to the bottom of the reboiler (3), the middle and lower part of the purification tower (1) is connected to the top of the reboiler (3), the top of the purification tower (1) is connected to the top of the 20 square heat exchanger (4), the bottom of the 20 square heat exchanger (4) is connected to the storage tank (6), the bottom end cap side of the 20 square heat exchanger (4) is connected to the top of the 10 square heat exchanger (5), and the bottom of the 10 square heat exchanger (5) is connected to the storage tank (6).
2. The bromine purification apparatus according to claim 1, characterized in that: A pneumatic shut-off valve (7) and a temperature controller (8) are installed on the pipeline connecting the bottom of the purification tower (1) and the bottom of the reboiler (3). The pneumatic shut-off valve (7) is connected to the emergency receiving tank (9), which is equipped with an emergency receiving pump (10).
3. The bromine purification apparatus according to claim 1, characterized in that: The purification tower (1) is equipped with a pressure and temperature transmitter (11) at the top and a differential pressure level gauge (12) and a thermometer at the bottom.
4. The bromine purification apparatus according to claim 1, characterized in that: The heating pipe (13) of the reboiler (3) is further equipped with a pneumatic regulating valve and a pneumatic shut-off valve.
5. The bromine purification apparatus according to claim 1, characterized in that: The heat exchanger and reboiler (3) are made of silicon carbide heat exchange tubes, a new type of heat exchange material.