Question
This problem is about mass balances in an absorption column. Consider an absorption column operating at 1.9 [atm] and 30 [C] that is used to
This problem is about mass balances in an absorption column. Consider an absorption column operating at 1.9 [atm] and 30 [C] that is used to treat 1500 [L/min] of a gaseous mixture with 23% NH (mole basis) and the balance being air. Water with traces of ammonia (0.5% NH by mole) is used for this purpose. The gas leaving the column contains 1.3% NH while the leaving liquid will have 14% NH (mole basis). Molar masses are: 0.017 [kg/mol] for ammonia; 0.018 [kg/mol] for water; and 0.029 [kg/mol] for air. Gas constant is R = 8.31446 [J/molK] (1 [J] = 1 [Pam]).
Requirements: Based on the information provided above, please find:
(1) The following for the entering gaseous stream (3 points each): Molar flow rate of the whole stream: Answer [mol/s] Molar flow rate of ammonia in this stream: Answer [mol/s] Molar flow rate of air in this stream: Answer [mol/s] Ammonia-to-air mole ratio in this stream: Answer []
(2) The following for the outgoing (exit) gaseous stream (4 points each): Mole fraction of air in this stream: Answer [] Molar flow rate of the whole stream: Answer [mol/s] Ammonia-to-air mole ratio in this stream: Answer []
(3) The ammonia-to-water mole ratio for the following liquid streams (4 points each): The entering liquid stream: Answer [] The outgoing (exit) liquid stream: Answer []
(4) The water flow rate (ammonia-free basis) in the liquid streams (3 points each): In the entering liquid stream: Answer [mol/s] In the outgoing (exit) liquid stream: Answer [mol/s]
Step by Step Solution
There are 3 Steps involved in it
Step: 1
Get Instant Access to Expert-Tailored Solutions
See step-by-step solutions with expert insights and AI powered tools for academic success
Step: 2
Step: 3
Ace Your Homework with AI
Get the answers you need in no time with our AI-driven, step-by-step assistance
Get Started