Scrubber Design Calculation Excel Hot ❲EASY ✔❳

Hot gases will evaporate the scrubbing liquid until they reach the adiabatic saturation temperature ( Tsatcap T sub s a t end-sub

The tower diameter is typically calculated to avoid "flooding," where upward gas velocity prevents downward liquid flow.

= Equilibrium concentration (assumed to be 0 for chemically reactive scrubbing) Step 2: Height of a Transfer Unit ( HOGcap H sub cap O cap G end-sub HOGcap H sub cap O cap G end-sub scrubber design calculation excel hot

To perform scrubber design calculations in Excel, we can create a calculation template that includes the following inputs:

G⋅Cpg⋅(Tin−Tas)=G⋅(Yas−Yin)⋅ΔHvcap G center dot cap C sub p g end-sub center dot open paren cap T sub i n end-sub minus cap T sub a s end-sub close paren equals cap G center dot open paren cap Y sub a s end-sub minus cap Y sub i n end-sub close paren center dot cap delta cap H sub v = Mass flow rate of dry gas ( kg/hrkg/hr Cpgcap C sub p g end-sub = Specific heat capacity of the dry gas ( Tincap T sub i n end-sub = Hot gas inlet temperature ( ∘Craised to the composed with power C Tascap T sub a s end-sub = Adiabatic saturation temperature ( ∘Craised to the composed with power C Yincap Y sub i n end-sub = Absolute humidity of inlet gas ( kg water / kg dry gaskg water / kg dry gas Yascap Y sub a s end-sub = Absolute humidity of saturated gas ( kg water / kg dry gaskg water / kg dry gas = Latent heat of vaporization of water ( kJ/kgkJ/kg Yascap Y sub a s end-sub is a direct function of the vapor pressure of water at Tascap T sub a s end-sub Hot gases will evaporate the scrubbing liquid until

[1. Characterize Inlet Gas] ➔ [2. Iterate Saturation Temp] ➔ [3. Sizing Vessel Geometry] ➔ [4. Hydraulic Calculations] Step 1: Characterize the Inlet Gas

Your sheet must explicitly output a "Make-up Water Rate." This value must equal the evaporated water ( mevapm sub e v a p end-sub Iterate Saturation Temp] ➔ [3

=SCFM * ((T_sat_F + 460) / 520) * (14.7 / Operating_Pressure_psia) * (1 + Mole_Fraction_Evap_Water) Use code with caution. Step 3: Calculate Column Diameter Once you establish the design gas velocity ( Vdesigncap V sub d e s i g n end-sub in ft/s) from your flooding curves: =SQRT((4 * (Quenched_ACFM / 60)) / (PI() * V_design)) Use code with caution. 4. Best Practices for Hot Gas Scrubber Sheets