Example 8-5 Production of Acetic Anhydride

Jeffreys, in a treatment of the design of an acetic anhydride manufacturing faci states that one of the key steps is the vapor-phase cracking of acetone to ketene methane:

CH,COCH,CH_CO +CH,

He states further that this reaction is first-order with respect to acetone and that

specific reaction rate can be expressed by

Ink=34,34-34,222 T

(ES-:

where k is in reciprocal seconds and T is in kelvin. In this design it is desired to f

7850 kg of acetone per hour to a tubular reactor. The reactor consists of a bank

1000 1-inch schedule 40 tubes. We will consider three cases: B. CASE 2 The reactor is surrounded by a heat exchanger where the heat-trans- fer coefficient is 110 J/ms K. and the temperature of the heating

medium, T. is constant at 1150 K.

C. CASE 3 The heat exchanger in Case 2 now has a variable heating medium temperature

Consider : Counter current Ta =1258. 746k I need a polymath answer Whit X vs V T & Ta vs V plots X= T=