Regarding the whitening condensation heat exchanger after wet flue gas desulfurization
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Guys, there’s a problem that’s been bothering me lately. In one of the projects, it is required to install a desulfurization heat exchanger after the wet desulfurization process. The flue gas temperature is only 50 degrees, the flow rate is around 400,000 standard cubic meters per hour, and the moisture content is approximately 14.5% on a wet basis； Using conventional equipment, whether it’s fluoroplastic or duplex stainless steel heat exchangers, the investment costs are high, and a circulating water system is also required. Are there any other methods that are effective and require an investment in youshen?
The one that is currently in use is the one with the best cost! Preliminary project evaluation and investment. The cost also needs to be justified!
At present, all the designs we have are based on use of whitening heat exchangers; it’s just a matter of differences in the type of heat exchanger. I’ve heard of a new technology that uses ultrasonic principles to whiten things, but there are no practical applications of it yet – it has only worked successfully in the laboratory. Its advantage is that it allows for on-the-spot modification and has low costs. But would you dare to use a new technology that has never been applied before?
Ultrasonic waves? What is the principle behind this?
I’m not exactly sure about the details either; from what I understand, it works by using ultrasonic waves to change the temperature of the exhaust gases, somewhat similar to a microwave oven. I just listened to it briefly from the side.
Heating the wet flue gas from 50 degrees Celsius to 80 degrees Celsius should basically resolve the plume issue, which is quite convenient! That’s the current level of technology for dewetting; removing water vapor from saturated wet flue gas basically involves condensation followed by reheating. They all enter the circulatory system; it’s just the circulating medium that differs. In my opinion, the combination of cooling and condensing the flue gas through spray water (the temperature of the saturated flue gas drops after being sprayed, resulting in a corresponding reduction in water vapor content) + cooling through the circulation of the spray water solution + heating the cleaned flue gas should yield good results! But two towers (bleaching water wash tower and spray liquid cooling tower) and two sets of circulation systems need to be added!
Thank you! I also think this approach works well; it’s necessary to make things clear to the users at the planning and bidding stage
I’m not sure if there are any requirements regarding emissions; we have a piece of equipment that uses a technology for mixing fresh air with flue gas, and the investment required for it is relatively low