ION EXCHANGE UNIT Russian patent published in 2023 - IPC B01D15/04 C02F1/42 B01J47/02 

FIELD: equipment for carrying out ion exchange processes.

SUBSTANCE: ion exchange installation contains an ion exchange filter, inside which upper and lower drainage and distribution devices are installed and there is a layer of ion exchanger particles with a density lower than the density of the water being purified, and a layer of particles of inert material with a density 15-25% greater than the density of the water being purified, a pipe with a shut-off device, a container configured to receive part of the inert material to ensure the following states of the filter layers during operation: for the stages of water purification, regeneration and washing, a fixed layer of ion exchanger particles and a layer of inert material particles are located from top to bottom along the height of the ion exchange filter, for the stages of stopping the supply of water to the ion exchange installation are located from top to bottom along the height of the ion exchange filter, a layer of ion exchange resin particles, free volume and a layer of particles of inert material; for the loosening stage, a layer of fluidized ion resin and a layer of particles of inert material are located from top to bottom along the height of the ion exchange filter. According to the invention, the ion exchange installation contains an airlift for moving particles of inert material from the bottom of the ion exchange filter into a container located above the ion exchange filter, and a pipe installed vertically in the centre of the ion exchange filter for moving inert material from the container to the ion exchange filter.

EFFECT: possibility of washing the ion exchanger from mechanical impurities at the stage of loosening the ion exchanger.

1 cl, 5 dwg