Calculation for direct flue gas spraying cooling
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It is known that the flue gas volume is 210,000 Nm3, the inlet flue gas temperature is 55°C, and the outlet flue gas temperature is 45°C℃； The cooling water inlet temperature is 32°C and the outlet temperature is 42°C; a spray cooling method is used to reduce the smoke temperature and the moisture content in the smoke. How is the cooling water flow rate calculated?
Heat balance: Heat released by flue gas: C1M1🔺T1; Heat from evaporation of cooling water: M2(C2🔺T2+r). Mass balance: H*=f(T); Relationship between saturation humidity and temperature. The saturation humidity, calculated based on the moisture content in the inlet flue gas plus the amount of water that evaporates, is ≤H*
Check the humidity of the flue gas at the inlet; if it is already saturated, then there must be wastewater present
The flue gas after desulfurization is saturated wet flue gas
Does cooling water evaporate? 32 to 42 degrees Celsius.
Hello, what does the formula you provided for the heat released during flue gas cooling mean? Should heat capacity and latent heat be separated? Will the cooling water evaporate at the same time?
Hello, what does the formula you provided for the heat released during flue gas cooling mean? Should heat capacity and latent heat be separated? Will the cooling water evaporate at the same time?
Isn’t it all about eliminating the white mist these days? Judging from your temperature reading, it seems to be wet flue gas after desulfurization. The proper approach is to use cold water to condense the moisture in the flue gas, and then heat the gas again using another heat source at the outlet, thereby eliminating the white mist. Latent heat of condensation: 7700 kW, sensible heat: 820 kW. 10.3 t of water can be collected per hour. It is recommended to use 2205 duplex steel finned tubes.
Could someone upstairs please tell me what materials contain calculations on this topic? I need it too: (
When using a 2205 finned heat exchanger, how are the heat transfer coefficient and heat transfer area for the flue gas side calculated?