2+2×2÷2-2=?

4

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A packed bed reactor is used to produce styrene by the vapor phase catalytic dehydrogenation of ethylbenzene. Steam is used to prolong life of the catalyst...

The following reactions may be significant:

C6H5C2H5.  <———kst———>C6H5CH=CH2 +H2

EB<———kst——>ST+H₂

Log10(kst)=(-11370 /4.575T )+0.883

Dlta H =53600 BTU/bmol

where T is in degrees Kelvin; kst = lbmol styrene/ (h-atm-lb catalyst.

The overall equilibrium constant

T, (°C).      400                      500.                      600.         700

Kp             1.7 x 10^-3     2.5 x 10^-2        2.3 x 10^-1       1.4

Additional data

Vapor phase reaction

Feed temperature = 1124 F

Feed pressure = 20 psia

Feed molar flow rate = 1206 lbmole/h

1- From any available source, find the rate of reaction as a function of (mole fraction, concentration or partial pressure

2- Find the activation energy of the reaction

3- Design a reactor that can handle this reaction according to the given data

4- Mention the design constraints and assumptions

5- Verify the design using HYSYS and Polymath software

6- Mention the utility requirement if possible

1. 7- Mention any environmental health and safety impact of this process 8- Mention any economic, social, and cultural issues

An inextensible rope passing over a smooth pulley has two blocks of mass 20 kg 
and 30 kg attached to its two ends. The mass of the pulley is l0 kg and radius of
gyration 0.3m. Determine the tension on the rope and the acceleration of the
masseb.

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