Add waste heat recovery facilities after the catalytic residue boiler
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Have you installed waste heat recovery facilities behind your catalytic surplus boiler? We want to add it; please recommend something. Which water is to be heated, while ensuring that the heat exchange equipment does not suffer from corrosion caused by low-temperature acid dew points in the flue gases
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It is recommended to add a flue gas heat exchanger behind the catalytic waste heat boiler, before it enters the desulfurization and denitrification units. It recovers heat, saves fuel, improves efficiency, and is also beneficial to atmospheric environmental protection. It’s a good choice.
Low-temperature economizer, used to heat deoxygenated water
It’s a good idea, but in practice it’s generally not possible to do so, otherwise dew point corrosion will occur!
This is the conventional design for catalytic waste heat boilers; he is asking whether it is possible to add additional waste heat recovery equipment on top of these conventional designs!
To add more information: generally, the flue gas temperature in catalytic cracking boilers is set to be no less than 220°C in order to prevent dew point corrosion of metal equipment caused by moisture in the flue gas when the temperature is below this level