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The crystalline product ( P ) is synthesised from an amorphous substrate ( A ) in aqueous sodium hydroxide ( N a O H )
The crystalline product is synthesised from an amorphous substrate in aqueous sodium hydroxide in a well agitated isothermal batch rector at The substrate A rapidly dissolves into soluble species S and crystalises into a crystalline product P following an autocatalytic reaction.
NaOH
The reaction rate equation is given as
where and are the concentrations of amorphous substrate and crystalline kmol. The kinetic parameters, and are given at the reaction temperature of as and respectively.
a The reactor feed is slurry, containing of crystalline product and of amorphous substrate. The reactor operates isothermally at and the concentration of sodium hydroxide is kmol. Determine the time required to achieve of the substrate conversion to zeolite.
marks
b Determine the reactor size and total weight of charge necessary to produce be used and it will be necessary to shut down for between batches for removal of product, cleaning, and startup. The product to be recycled to the reactor will come from produced daily.
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