Kellogg, Will

With AMS hydrogenation, 1.31 tons of cumene will produce 1 ton of phenol and 0.616 tons of acetone. This high-yield process produces very high-quality phenol and acetone products with very little heavy and light-end byproducts. With over 40 years of continuous technological development, the Kellogg Brown Root (KBR) phenol process features low cumene and energy consumptions, coupled with unsurpassed safety and environmental systems. 

Data from the bench scale studies clearly indicated sufficient incentive for further study. Consequently in 1968, Kellogg designed and constructed a pilot plant reactor system which could be used for cracking a variety of feedstock types in the optimum contact time range established by the bench scale work. In this design, the process variables were incorporated in a manner that assured that the data obtained would be comparable with eventual full scale yields and process conditions. The pilot plant will be described in detail in the present paper. 

It is well known that the conversion of hydrogen and nitrogen per pass is only 20%-30% for the present catalytic ammonia synthesis technology (Table 1.4). Most synthesis gases need to be returned to the reaction system, which increases power consumption. In order to increase conversion per pass, it must increase the outlet ammonia concentration of reactor. Accordingly, it can be seen from Table 1.4 that it is necessary to increase reaction pressure for small and medimn scale aimnonia plants and Topspe process, or to reduce the content of inert gas in sjmthesis gas for Topspe and Braun processes, or to reduce ammonia concentration in the inlet of converter for small and medium scale ammonia plants and Kellogg process. But all of these operations will add the power consumption or unit gas consumption. 

In order to reduce the effects of inert gas and increase output, three or four beds of catalysts are used under the industrial condition of traditional process, which will make the pressure drop and increase in energy consumption. Kellogg Company considered that the energy consumption can be reduced greatly if Ru catalyst is co-used with Fe catalyst. There are three ways to co-use Fe and Ru catalyst ... 

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