Tailpipe whitening
Thread Content
Have you ever used plate heat exchangers for removing white exhaust fumes? What was the outcome?
It mainly depends on whether the channel area is sufficient Take the effect of resistance into account!
It mainly depends on whether, for the same heat exchange area, the equipment investment cost or the operating costs are better!
Sakefu has an ammonium phosphate production plant equipped with an exhaust gas whitening system; this system uses cold air to dilute the exhaust gases, and after heat exchange, the gases are then released. It was designed by Donghua Technology, and its effectiveness is said to be decent. However, if there isn’t enough excess steam available, the energy consumption becomes relatively high.
Of course, the lower the resistance, the better; it seems that the resistance of plate-type designs is lower than that of shell-and-tube designs
What type of heat exchanger is being used, tubular or plate-type?
The key factors are corrosion and resistance; proper material selection is necessary
I work with dry desulfurization; the flue gas temperature is high, so there’s no need for whitening
The flow resistance of plate heat exchangers is much higher than that of shell and tube heat exchangers. To put it simply, the flow channels in plate heat exchangers are smaller, which ensures good heat exchange efficiency but also increases flow resistance. In order to reduce this resistance, it is necessary to increase the equivalent flow area; as a result, the heat exchange area of plate heat exchangers used in practice is generally larger than that of shell and tube heat exchangers, though this is not always the case. Every type of heat exchanger has its own reason for existing!