Quenching of products

Both processes rely on a fast flow system and the rapid quenching of product gases yields of up to 90% can be attained. It is salutory to note that US production of this highly toxic compound is 600000 tonnes pa (1992) and world production exceeds one million tonnes pa. Of this, 41% is used to manufacture adiponitrile for nylon and 28% for acrylic plastics ... 

Rapid quenching of product gas may be necessary to block any recombination of H2 and S2 (decomposition reaction is reversible)... 

Energy Efficiency of CO2 Dissociation in Thermal Plasma Under Conditions of Ideal Quenching of Products... 

Super-Ideal Quenching of Products of CO2 Dissociation in Thermal Plasma. Analyze a kinetic scenario for performing super-ideal quenching. Calculate the possible separation of vibrational and translational temperatures of CO2 molecules during cool down of the hot gas mixture from the temperatures optimal for thermal CO2 dissociation. Which mechanism of VT relaxation is the most important during the quenching (take composition of the mixture from Fig. 5-3). 

Figure 6-4. Conversion degree a of N2-O2 mixture into nitrogen oxides as funetions of spe-eifie energy input Fy (1) simulation of the pro-eess stimulated by vibrational excitation of nitrogen moleeules (2) simulation of the thermal process assuming ideal quenching of products ...

All these factors explain why quenching of products of direct UFg decomposition in thermal plasma is such a challenging task. The condensed products should be separated from fluorine before heterogeneous reverse reactions take place. For example, the heterogeneous reverse reaction of tetrafluoride gasification, UF4 + F2 UFg, decreases the mass of a UF4 particulate in accordance with the following kinetic equation ... 

Quenching of Products of Direct UFe Decomposition in Thermal Plasma. Integrating kinetic equation (7-48), derive formula (7-49) for the mass decrease of uranium-containing product particles due to their gasification by fluorine. Analyze the effect of initial particulate size on the rate and characteristic time of the heterogeneous reverse reactions. Compare the efficiencies of quenching of UF4 and metallic uranium. 

Flow reactor, material AI2O3 (Alsrnt), quenching of products [67]... 

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