1. What is q 0 ? 2. What is q 6 ? 3. What is q 0 /q 6 ? Acrylonitrile can be for

Question

1. What is q0?
2. What is q6?
3. What is q0/q6?

Acrylonitrile can be formed from propylene, ammonia and oxygen in the reaction To produce acrylonitrile stoichiometric ratios of propylene, ammonia, and oxygen are fed into the reactor. The single pass conversion of this reaction is 27.7% of the propylene. The product of the reaction is fed into a separator where the unreacted propylene, ammonia, and oxygen are recycled back to the feed stream, and the acrylonitrile and water exit as products. If 16.3 kg of C3H3N/min are desired, find the flow rate of fresh feed q0, the flow rate of the recycle stream q6, and the ratio of fresh feed to recycled feed that enters the reactor.

Explanation / Answer

1.No of moles of C3H3N required=mass/molar mass=16.3x1000g/53.06g/mol=307.199mol

If we take one mole of propylene we will get 1 mole of C3H3N , so no of moles of propylene required =307.199

the percentage of conversion=27.7%

if 100% propylene is fed in to the stream only 27.7% only reacts other 72.3 % is recycled and again going back and joins the fresh feed.

so each time we need to add only 27.7% of propylene to the fresh feed that means

q1=307.199mol/min

q2=307.199mol/min (No of moles of propylene and ammonia are same from the above equation)

q3=307.199molx3/2=460.7985mol/min

q0=q1+q2+q3=1075.1965mol/min

2. 72.3%of propylene is recycled

so q7 =307.199x72.3/27.7=801.823mol/min

q8=801.823mol/min(No of moles of propylene and ammonia are same from the above equation)

q9=801.823mol/minx3/2=1202.734mol/min

q6=q7+q8+q9=2806.38mol/min

3.q0/q6=1075.1965mol/min/2806.38mol/min=0.38

Related Questions

Navigate

• Browse (All)
• Browse 1
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.