Absorber-reactors

Trickle bed gas absorber-reactor. Sulfur dioxide is to be removed from a gas by passing the gas and water through a bed of highly porous activated carbon kept at 25°C. In this system sulfur dioxide and oxygen dissolve in water and react on the solid to give sulfur trioxide, as follows ... 

Example 24.6 illustrates this procedure for batch absorber-reactors. 

The wide spectrum of external conditions which can influence the conformational state of charged gels (the variation of these conditions can induce collapse or decollapse transition), makes these gels possible materials for data control devices of different types, absorbers, reactors and catalysts with regulated diffusion characteristics, carriers of immobilized enzymes, etc. The networks synthesized at high dilution are also new mechano-chemical systems which show very high sensitivity to external actions. 

Increasing Vanadium and ADA Content. Raising the concentration of vanadium in the Stretford solution can increase the rate of elemental sulfur formation in the absorber/reactor, and thus lower the concentration of sulfur compounds that are converted to thiosulfate in the oxidizer (Moyes 1974 and Nicklin 1977). It may also be necessary to increase the ADA concentration as well, in order to convert the additional tetravalent vanadium that will be formed back into its pentavalent state. 

Stolk and Syverson (1978) described an absorber-reactor that is capable of carrying out transient studies at millisecond rates. They presented a high-temperature, high-speed constant volume adsorber reactor that is capable of measuring adsorption rate in the presence of a chemical reaction. The reactor provides rapid gas-solid contact in a constant-volume cell with transient rates for temperature and pressure measurements in the millisecond region. Using... 

The separation of products is usually acconq>lished by first absorbing reactor-2 effluent into water, followed by extraction of the organics into a solvent such as butyl acetate, and distillation to recover the solvent, acrylic acid and acetic acid, and aqueous and organic wastes. However, if relatively high propylene and low steam concentrations in the feed are used, extraction can be dispensed with. In file interest of minimization of processing, this design will be enqiloyed, but it does require recycle. 

Ammona Nfi Ammonia reactor put kation absorber reactor... 

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