In-tank deployment of large scale rotating bed reactor

To further demonstrate the use of RBR:s at process scale, a decolorization using ion exchange resin was performed at 7500 L scale.

An RBR S14 was filled with strongly acidic cationic resin NRW1160 from Purolite and used to remove blue dye from an aqueous solution in a stainless steel tank of 7500 L volume. The solid-to-liquid ratio is a fraction of percent, showing the efficiency of the RBR technique for convectional mass-transfer and global mixing.

The RBR was spun at 340 rpm while the transmittance at 663 nm was monitored for ca 4 h at which point the transmittance had recovered the baseline value for colorless de-ionized water.

Keywords: Ion exchange, Cleantech, Nuclear, Scale-up