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SCRUBBER DESIGN (PACKED COLUMN) Prepared by : Checked by : Date : ### Input Data Packing type Packing size Packing MOC = Intallox Saddles = 25 mm = PP Gas pr. Drop / m bed Total packing height = = Column Tag No. Job No. Client Project : : : : Stream : 15 mmWC / m packing height 3.2 m (including all packed beds) HCL Vap. = 147.1 (N/m2)/m Gas / Vapour Properties Gas / Air flow rate = 1000 kg/h = 0.2778 kg/s Gas pressure at entry = 1.0000 atm Gas temperature at entry Gas / Air mol weight = = 30.00 oC 29 Component to be scrubbed Component Name = Component flow rate = % comp. in air/gas = Molecular weight of comp. = OR = = HCL Vap 70 Kg/h 6 % (v/v) 36.5 Liquid Viscosity, µL = 0.0035000 Ns/m2 Packing factor, Fp = 0 m3/s 303.00 oK (presumed) / (given by client) / (by process cal.) Liquid / Scrubbing media Properties Scrubbing media = 20% NaOH Liquid flow rate, L = 77 kg/h = 0.0214 kg/s Liquid Density, L = 1100 kg/m3 Charac. Packing Factor,Cf = Conversion factor, J = 0 m3/h Conversion : 3.5 Cp = 0.00350000 Ns/m2 21 m-1 33 Ref. Table 6.3, Characterstics of Random packings 1.0 factor for adequate liquid distribution & irrigation across the bed Sheet 1 of 11 Calculations TO CALCULATE COLUMN DIAMETER Since larger flow quantities are at the bottom for an absorber, the diameter will be chosen to accommodate the bottom conditions. To calculate Gas density Avg. molecular weight = 29.45 Kg / Kmol If gas flow rate is given in kg/h If gas flow rate is given in m3/h Gas in = Gas in 0.0094321826 Kmol/s kmol = mass / mol wt = (kmol/s) x T in kelvin x 1.0 atm x 22.4 273 pr. In atm 1 = 0.234499 m /s 3 = (m3/s) x 273 x pr. in atm x T in kelvin 1.0 atm 1 22.4 = 0 Kmol/s = 0 Kg/s mass = mol wt x kmol Select vol. flow rate and mass flow rate from above, Selected mass flow rate = 0.2777778 Kg/s Selected vol. Flow rate Selected molar flow rate = 0.234499 m3/s = 0.0094322 Kmol/s Therefore, gas density = 1.1846 Kg/m3 (mass flow rate / vol. Flow rate) To find L', G' and Tower c/s area Assuming essentially complete absorbtion, Component removed = 0.0207 Kg/s Liquid leaving = 0.0420 Kg/s L' G G' L 0.5 Using = 0.00497 G' 2 Cf µL0.1 J ( G -L (molar flow rate x % comp. x mol. Wt.) (Inlet liquid flow rate + comp. Removed) 0.00497 as ordinate, Refer fig.6.34 using a

• MFCS-LP Male Luer Connector, 1.6mm (x4) • MFCS-LP White Cap (x4) • MFCS-LP Black flow Filters (x4) • Tygon Tubing (2 m) OD: 3 mm, ID: 1 mm MFCS™-EZ High Pressure Kit (CTQ-KIT-HP-MFCS) The MFCS™-EZ High Pressure Kit is especially designed to be used with any MFCS™-EZ with high-pressure channels, especially the 7 bar pressure range. • MFCS-HP Red Plug (x4) • MFCS-HP Black flow Filters (x4) • High Pressure Tubing (4x40 cm) OD: 4 mm , ID: 2.5 mm26MICROFLUIDIC COMPONENTS | TUBING & FITTING KITSFRP KITSFRP Low Flow Rate Kit (CTQ-KIT-LQ)The FRP Low Flow Rate Kit is for use with low flow rateFlow Units, XS, S, and M.• Adaptor PEEK 1/16” to 1/32” OD Tubing (x1)• LQ Flow Unit Connector for 1/32” OD Tubing (x2)• Green sleeve 1/16” OD , 0.33” ID x 1.6” (x1)• Blue PEEK Tubing 1/32” OD x 0.010”” ID (1 m)FRP High Flow Rate Kit (CTQ-KIT-HQ)The FRP High Flow Rate Kit is for use with high flow rateFlow Unit L.• HQ Flow Unit Connector 1/4-28 Flat-Bottom for 1/16” OD Tubing (x2)• Ferrule for HQ Flow Unit (x4)• FEP Tubing 1/16” OD x 0.020” ID (1m)FRP High Flow Rate XL Kit (CTQ-KIT-XL)The FRP High Flow Rate Kit XL is for use with high flowrate Flow Unit XL.• HQ Flow Unit Connector 1/4-28 Flat-Bottom for 1/16” OD Tubing (x2)• Ferule for HQ Flow Unit (x4)• FEP Tubing 1/16” OD x 0.020” ID (1m)• Union Tezfel™ with 0.030 thru hole (x1)• PEEK Tubing Natual 1/16” OD x

(1 + discount raten). Here’s what your formula will look like:Cash flow of year n / (1 + discount raten) The discount rate can either be the company’s weighted average cost of capital (WACC), if you have it, or a risk-free rate. Investors commonly use the interest rate on a 30-year treasury bill as the risk-free rate. Step 3: Find the sum of all discounted cash flows.Add each discounted cash flow that you found in Step 2 together.Step 4: Find the terminal value.The terminal value is an estimate of the future value of an asset beyond the forecasting period used in the analysis. The terminal value provides a rough estimate of the long-term value of the asset, which is useful in determining whether an investment is undervalued or overvalued.While there are multiple methods for finding terminal values, we’ll use the exit multiple method. This method assumes that the asset will be sold for a multiple of its cash flows at the end of the forecasting period. The terminal value is calculated by multiplying the terminal year’s cash flow by the exit multiple. The exit multiple is a measure of the cash flows an asset is expected to fetch when it is sold or liquidated. The exit multiple should be chosen carefully and based on industry averages, comparable transactions, and the expected future performance of the asset.Use the following formula to calculate: Terminal value = (Cash flow of final period x exit multiple) / (1 + discount raten)Step 5: Add terminal value to the sum of the discounted cash flows of years 1–10.Combine the sum you found in Step 3 with the terminal value you found in Step 4 to get your final answer. Example of Calculating Intrinsic Value of a Stock Using Discounted Cash FlowsIn this example of what a discounted cash flow calculator looks like, we’ll use the earnings available to investors from the previous year as our cash flow in year 0. For Company XYZ, that number is $280. Company XYZ’s growth rate is 5%. We’re going to look at a period of 10 years. Cash flow year 0 = $280 Growth rate = 5%Step 1: Find the cash flow of each period.YearCalculationCash Flow of Year 0 x (1 + Growth Raten)Cash FlowYear 1280 X 1.051 $294.00Year 2280 X 1.052 $308.70Year 3280 X 1.053 $324.14Year 4280 X 1.054 $340.34Year 5280 X 1.055 $357.36Year 6280 X 1.056 $375.23Year 7280 X 1.057 $393.99Year 8280 X 1.058 $413.69Year 9280 X 1.059 $434.37Year 10280 X 1.0510 $456.09Step 2: Find the discounted cash flow of each period.We’ll use the current 30-year treasury bill interest rate for our discount rate. That number is 3.79%. YearCalculationCash Flow of Year n / (1 + Discount Raten) Discounted Cash FlowYear 1294 / 1.03791 $283.26Year 2308.70 / 1.03792 $286.57Year 3324.14 / 1.03793 $289.91Year 4340.34 / 1.03794 $293.29Year 5357.36 / 1.03795 $296.71Year 6375.23 / 1.03796 $300.17Year 7393.99 / 1.03797 $303.66Year 8413.69 / 1.03798 $307.21Year 9434.37 / 1.03799 $310.79Year 10456.09 / 1.037910 $314.41Sum = $2,985.96Step 3: Find the sum of