357.     BRINKLEY, S. R.  Calculation of Catalyst and Gas Temperatures in Adiabatic Contact Catalytic Reactions.  Am. Chem. Soc. 110th Meeting Abs., Div. Ind. Eng. Chem., 1946, p. 42 I.

      Temperatures of catalyst and gas in contact-catalytic reactions is computed on the assumptions that all but a negligible amount of the heat of reaction is removed by means of the sensible heat of the gas stream and that the overall conversion of reactants to products is limited by means of small contact time to a few % of the total gas.  At constant velocity, the temperatures of catalyst and gas are found to increase exponentially with increase in depth of catalyst bed.  The yield is proportional to the overall temperature rise of the gas stream.  The effect of change in velocity on the temperature of the catalyst is investigated by the assumption that the coefficient of heat transfer from catalyst to gas is proportional to the 0.7 power of the velocity.  The temperature of catalyst and gas are estimated for a typical German operation of the Michael hot-gas recycle process for the middle-pressure synthesis of hydrocarbons from CO and H₂ on an Fe catalyst.  On the basis of approximate data, it is estimated that the catalyst temperature is between 7° and 9° higher than the gas temperature for a half-meter catalyst bed, flow rate 1 m./sec., and overall gas temperature rise of 10°.