【Weekly Question】Measures to Slow Down Clogging in the Tube Bundle of Heaters for High-Salt Wastewater Brine
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The heater in the high-salt wastewater treatment system uses a shell-and-tube heat exchanger, with steam in the shell side made of material 2507 and brine in the tube side made of titanium. If the operation period is less than 2 months, the tube bundle will get clogged, requiring shutdown for manual drilling of the tube bundle for clearance, treatment with chemicals, and mechanical cleaning. Are there any more advanced measures besides the ones mentioned above?
Regarding the problem of tube bundle blockage in the heaters of high-salt wastewater treatment systems, the following more advanced measures can be considered to mitigate or prevent such blockages: 1. **Optimize heater design**: - **Use coiled tube heat exchangers**: Compared to traditional straight-tube shell-and-tube heat exchangers, the coiled tube design increases fluid turbulence, thereby reducing the accumulation of deposits on the tube walls. - **Increase the pipe diameter**: A larger pipe diameter can reduce flow velocity, thereby minimizing wear and blockages caused by high flow rates. 2. **Online cleaning system**: - **Install an automatic backwashing system**: By performing timed reverse flushing of the pipes, deposits within them can be effectively removed, thereby reducing the risk of blockages. - **Use ultrasonic cleaning technology**: Ultrasonic waves can remove scale from within pipes without shutting down the system, thereby maintaining heat exchange efficiency. 3. **Improve fluid treatment**: - **Pre-treat the input brine**: Apply chemical treatments to the brine before it enters the heat exchanger, such as adding scale inhibitors or adjusting the pH value, in order to reduce the likelihood of scaling. - **Temperature control**: Adjust the heating temperature appropriately to prevent salt from crystallizing easily at certain temperatures. 4. **Monitoring and Maintenance**: - **Installation of sensors for monitoring**: Use pressure, temperature, and flow sensors to monitor the operation of the heat exchanger in real time, so as to detect any abnormalities promptly. - **Regular inspection and maintenance**: Develop a detailed maintenance plan to regularly inspect and clean the heat exchangers, thereby preventing severe blockages that can occur as a result of long-term accumulation. By implementing these measures, the tube bundle clogging problem in high-salt wastewater heaters can be effectively reduced, thereby improving the stability and efficiency of the equipment. .
https://bbs.hcbbs.com/thread-5677962-1-1.html Problems in the treatment of high-salt wastewater using evaporators and their solutions; hope this can be helpful
Of course. Our company’s microwave scale prevention and removal equipment can be installed at the inlet of the heater; by introducing microwave signals into the heater, it is possible to effectively prevent scaling there. It is effective against high-salt scales such as carbonates, sulfates, oxalates, and silicates, as well as metal oxide scales; its use in rare earth evaporators, alumina heaters, and tubular heat exchangers in sulfuric acid plants has proven successful. WeChat: TigerPeng2014
I guess the heat exchange tubes are too small; we usually use tubes with a diameter of 38 mm or more
Increase the flow rate of the axial flow pump. It can provide relief