Slurry reactor adiabatic

Gas-phase reactions are usually performed with a series of fixed bed adiabatic reactors with re-heating between each catalytic bed. Liquid-phase reactions are usually performed in a slurry reactor with a circulating inert gas. The new trends in dehydrogenation reactors and conditions are membrane reactors [12], wall reactors [13], reactions performed in supercritical water [14], and oxidative dehydrogenation [11],... 

For both high reaction rates and high adiabatic temperature rises at the moment slurry reactors are favourite. 

All three processes considered here are exothermic. Since slurry reactors on an industrial scale are operated under close to adiabatic conditions, a major scaleup problem is that of the thermal control of such reactors. Recently, Shah and Carr (10) have described a custom made agitated adiabatic slurry reactor, which can be used to evaluate the thermal behavior of the large scale reactors. 

The above described reactor is useful for the measurements of heat of reaction as well as thermal behavior of gas-liquid or gas- liquid-solid, high-pressure, high-temperature reactions. Since the reactor can be operated under adiabatic conditions, it simulates the commercial operation. The reactor was successfully utilized by Bhattacharjee et al. (1986) for investigating thermal behavior of slurry phase, catalytic synthesis gas conversion. 

A coal contains 10,5 wt% moisture (water) and 22.6 wt% noncombustible ash. The remaining fraction of the coal contains 81.2 wt% C, 13.4% O, and 5.4% H. A coal slurry containing 2.00 kg coal/kg water is fed at 25 C to an adiabatic gasification reactor along with a stream of pure oxygen at the same temperature. The following reactions take place in the reactor ... 

The salient advantages of the slurry process over conventional multibed adiabatic quench reactors are ... 

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