Start-up method of separation methods for purifying separating acrylic acid crystals from the suspension s of the acrylic acid crystals in the mother liquor

It has a distributor chamber and the crystalline melt circulation path and process chamber containing a crystalline melting chamber, the liquid which are separated by an end plate having a passage connecting both chambers and the process chamber and the distributor chamber using pressure wash column, the acrylic acid crystals to a start-up method of separation methods for purifying separated from the suspension S of the acrylic acid crystals in the mother liquor, upon initial formation of crystal bed, first crystals in the melt circulation path at least partially process chamber, filled with a low or acrylic acid-containing starting liquid the same than the temperature + 15 ° C. of acrylic acid crystals formed temperatures suspension S, and subsequently, washing tower the suspension S and filling when the control liquid to the difference between the pressure of the distributor chamber and the pressure in the crystal melting chamber progressed to decrease suddenly, in which, up to this point, the filter tube cleaning tower It flows through the filter F Arithmetic mean value of all waste flow, the method is 80m