Vinyl chloride (CH2CHCl) is an important chemical used to synthesize the polymer
ID: 495546 • Letter: V
Question
Vinyl chloride (CH2CHCl) is an important chemical used to synthesize the polymer polyvinyl chloride. Vinyl chloride may be synthesized by a two-step process. First, ethylene is chlorinated to form 1,2-dichlorothane.
yl chloride (CH2CHCl) is an important chemical used to synthesize the polymer polyvinyl chloride. Vinyl chloride may be synthesized by a two-step process. First, ethylene is chlorinated to form 1,2-dichlorothane. C, H, g Cl Then the 1,2 dichloroethane is dehydrochlorinated to produce vinyl chloride and hydrogen chloride CICH,CH CIlg) CH CHCI(g) HCI(g) At this point, the hydrogen chloride may be siphoned off from the vinyl chloride to react with oxygen and more ethylene to form 1,2-dichloroethane o, (g) CICH,CH Cl(g) H1olg This newly-formed 1,2 dichloroethane is then free to undergo the reaction (2), creating more CH2CHCl and HCl. A facility produces vinyl chloride by the process described above. A 65.0 L/min, 50/50 mixture by mole of ethylene and chlorine gas at 323.15 K and 1.00 atm is fed into Reactor 1, in which reaction (1) takes place. CICH2CH2Cl gas leaves Reactor 1 and enters a preheater where the CICH2CH2Cl is raised to 460.0 K and kept at 1.000 atm. CICH2CH2Cl moves into pressurized Reactor 2 where it undergoes reaction (2). Hydrogen chloride from this reaction is sent to Reactor 3 where it is mixed with stoichiometric amounts of O2 and ethylene and reaction (3) occurs. CICH2CH2Cl from reaction (3) is separated from water vapor, and sent to the preheater. Find: the molar flow rate of vinyl chloride out of this process, the molar flow rate of ethylene into Reactor 3, the moles of CICH2CH2Cl leaving the preheater, and the velocity of the CICH2CH2Cl gas leaving the pre-heater if the pipe's diameter is 9.00 cm. Assume a reactions proceed to completion, no side reactions occur, and all gases behave ideally except CICH2CH2Cl. Use the van der Waals equation of state to model the behavior of CICH2CH2Cl (TC 561.6 K, P J 53.8 atm)Explanation / Answer
Reactor 1
P1= 1 atm
T1= 323.15 K
V1= 65.0 L/min
N1= ?
Apply PV= nRT
R= 0.0821Latm/K*mol
N1= PV/RT = 1 *65.0 /0.0821 *323.15 = 2.45 mol/min
Total moles of Ethylene+ Chlorine = 50 +50 =100
Mole fraction XE = moles of ethylene /total moles = 50 /100 = 0.5
Mole fraction Xcl = moles of chlorine /total moles = 50 /100 = 0.5
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