Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Question - 3 An ammonia air mixture containing 2 % by volume ammonia is be scrubbed with water at 20 oc in a tower packed with 1.27 cm Raschig rings. The water and gas rates are 1170 kg/hr- m2 ,each based on empty tower cross section. Estimate the height of the tower required if 98 % of the ammonia in the entering gas is to be absorbed . the tower operates at 1 atm pressure. The equilibrium relationship is given by the following equation
Ye = 0.746 x Where , ye = mol -fraction of ammonia air X = mole fraction in the solution with water. The height of transfer unit may be taken as equal to 2 m. Solution -- Ye = Ye /1+Ye X = x = X/1+X Where , Ye = mole of ammonia/ mole of air X = mole ammonia /mole water Y1 = 2/98 = 0.0204 Y2 = 2/100 *Y1 =0.0004 Average molecular weight of gas - mixture= 0.02 *17 +0.98*29 = 28.76 Gas rate = 1170 /28.76 = 40.68 kg-mole /hr-m2 Inert gas rate = 40.68 *0.98 =39.87 kg-mole /hr-m2 From ammonia ( solute ) balance - 39.87 (0.0204 -0.0004 ) = 65*x1 X1 = x1 = 0.0123 Equilibrium relation is--- Ye1 /1+Ye1 = 0.746 *X1/1+X1 Putting the value of X1 , we getYe1 = 0.0092NTU = ( 0.0204-0.0004)/(0.0204 -0.0092)-(0.0004) / ln [0.0204-0.0032/0.0004] = 6.17Tower height = NTU *HTU = 6.17*2 = 12.34 m
It will dissolve, however, in aqua regia, a mixture of the two concentrated acids. The products of the reaction are the AuCl46- ion and gaseous NO. Write a balanced equation for the dissolution of gold in aqua regia.
Construct a table that summarizes the Level 0 information that you have, and information that you might need to obtain. Comment on choices that might need to be reconsidered and why. Comment on what you will do about currently missing information.
The gases enter the condenser at 230 °C and leave at 50 °C. The cooling water enters the tubes at 20 °C and leaves at 50 °C. Suggest suitable materials of construction for the shell and the tubes.
Calculate the heat when 100.0 mL of 0.500 M HCl is mixed with 300.0 mL of 0.100 M Ba(OH)2. Assuming that the temperature of both solutions was initially 25.0C and that the final mixture has a mass of 400.0 g and a specific heat capacity of 4.18 J..
Hardness is 160 ppm and flow rate is 40 m3/hr ,I want to know the amount resin quantity required. Please give me a solution with details.
Chemicals for Indoor Concrete Flooring, - indoor concrete maintenance chemicals used on indoor concrete flooring
The process used in the manufacture of aniline from nitrobenzene is described in Appendix F, Design Problem F.8, which is available in the online material at booksite.Elsevier.com/Towler. The process involves six significant stages:
You have a heat pump that takes in 256 kW of heat and puts out 604 kW of heat. What is the coefficient of performance (C.O.P.) of the system ( express this value as a fraction)?
Ethane (C2H6) can be dehydrogenated to ethylene (C2H4), which can be dehydrogenated further to acetylene (C2H2). A reactor is fed with ethane and steam at a 1:1 mole ratio (The steam simply acts as a diluent). If the reactor runs at 1 atm and the rea..
Evaluate the stability using Rouths Hurwartz criterion and obtain the range of K value for the stability under various controllers and evaluate the relative stability of the system with P and I controllers.
You have two identical containers at a fixed temperature. In one you have water vapor (H2O) and in the other you have carbon dioxide (CO2). In the high-temperature, classical limit for vibrations and rotations, meaning that (rotation angle
A 30 mol% feed of benzene in toluene is to be distilled in a batch operation. A product having an average composition of 45 mol% benzene is to be produced. Calculate the amount of residue, assuming α = 2.5 and W0 = 100.
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +1-415-670-9521
Phone: +1-415-670-9521
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd