Has anyone encountered the problem of scaling in heat exchange equipment?

Components with high heat loads, such as residue and tower top coolers, are prone to scaling. Generally, it involves using high-pressure water to flush through the tube bundle or dissolving it with acid.

An ultrasonic descaling device has been installed in the heat exchanger; it is currently in the trial phase, and the results are not yet known

Due to factors such as usage time and operating conditions, heat exchange equipment can develop scaling and coking to varying degrees. There are many solutions, such as chemical methods for descaling—acid cleaning, charring, etc., and physical methods—high-pressure water (solvent) cleaning (blasting), ultrasonic vibration cleaning, etc. The optimal approach is to pre-treat the medium by adding scale inhibitors and biocides to the circulating water, as well as reducing its mineralization level, in order to keep the heat exchange medium clean and free from scaling, salt deposition, coking, or solidification. This is the best way to ensure the efficient operation of heat exchangers and extend their service life.

We just cleaned the condenser last month, using high-pressure water cleaning. The cooling effect after cleaning is excellent; the system pressure dropped from 1.00 MPa to 0.80 MPa. The main cause of fouling in heat exchangers is poor quality of the circulating water. Because our condenser has internal leaks, methanol and dimethyl ether leak into the circulating water, so the quality of the circulating water has not been fully improved to date. The condenser has just been cleaned; it has been in operation for a month now, but the pressure of the water supply to the circulation system is increasing steadily, and the obstruction in the condenser’s tube bundle is also getting worse.

This post was last edited by hanzhansheng on 2012-3-31 10:51. We have a technology that can not only prevent scaling but also enhance heat transfer; it is neither ultrasound nor electromagnetic. It achieves online scale prevention and energy savings through physical mechanisms; in heat exchange equipment such as evaporators, condensers, and reboilers where phase changes occur, the effects of scale prevention and energy savings are particularly significant. This technology is part of the \"Ninth Five-Year Plan Science and Technology Research Project\" conducted by the School of Chemical Engineering at Tianjin University. As a result, this technology is now quite mature. Many enterprises that have adopted it have reported very good results – whereas in the past some companies had to shut down for cleaning once a month, they can now avoid such shutdowns for up to a year without any reduction in processing capacity. Friends who are interested can discuss this with me; QQ: 234367050 www.chemwit.com

This post was last edited by hanzhansheng on 2012-4-8 at 10:54. Scaling in heat exchange equipment indeed causes significant problems for many companies; it not only results in wasted manpower, resources, and financial assets but also leads to a decrease in production capacity. Therefore, it is a top priority for those companies whose heat exchange equipment is severely scaled to find solutions to this issue. In the inorganic salts industry, companies with severe scaling problems have seen substantial benefits in terms of energy savings, cost reduction, and improved economic performance after using our technology.

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