Device and Method For Thermally Drying Filter Cakes in Diaphragm-Filter Presses
Heatable filter plate comprising two interconnected corrugated elements forming a cavity for the flow of a temperature controlled medium, filter press comprising said filter plate and diaphragm-filter plates in an alternating manner, and method for drying filter cakes in said filter press.
1 . A temperature-controllable chamber filter plate or pressure/wash plate with associated frame with a heating and cooling body, comprising, as a heating and cooling body, at least two interconnected corrugated elements which form at least one cavity and through which a temperature-controllable medium is flowable.
2 . The chamber filter plate or pressure/wash plate as claimed in claim 1 , comprising filter media on both sides on the chamber filter plate or pressure/wash plate.
3 . A diaphragm chamber filter press made up in alternation of diaphragm chamber filter plates and chamber filter plates and/or pressure/wash plates according to claim 1 with associated frame.
4 . The diaphragm chamber filter press as claimed in claim 3 , wherein the diaphragm chamber filter plates used are equipped on both sides with a diaphragm and/or filter medium.
5 . A method of drying filtercakes which comprises drying said filtercakes in the diaphragm chamber filter press of claim 3 .
6 . The method of drying filtercakes of claim 5 , wherein the chamber filter plate or pressure/wash plate is temperature-controlled at the start of the pressing step in the diaphragm chamber filter press.
7 . The method as claimed in claim 5 , wherein the chamber filter plate or pressure/wash plate comprises channels for introducing a suspension and/or for removing filtrate, and washings of the filtercake and/or evacuation of the filter chamber proceeds via said channel.
8 . The method as claimed in claim 5 , wherein the diaphragm chamber filter plates and chamber filter plates or pressure/wash plates with associated frame are operated each with a separate temperature-control/pressure circuit.
9 . The method as claimed in claim 5 , wherein the diaphragm chamber filter plates are operated with a pressing medium connection and the chamber filter plates or pressure/wash plates with associated frame are operated with a separate temperature-control/pressure circuit.
10 . A product comprising a filter cake dried by the method of claim 5 .
11 . A diaphragm chamber filter press made up in alternation of diaphragm chamber filter plates and chamber filter plates and/or pressure/wash plates according to claim 2 with associated frame.
12 . The diaphragm chamber filter press as claimed in claim 11 , wherein the diaphragm chamber filter plates are equipped on both sides with a diaphragm and/or filter medium.
13 . The method as claimed in claim 6 , wherein the chamber filter plate or pressure/wash plate comprises channels for introducing a suspension and/or for removing filtrate, and washings of the filtercake and/or evacuation of the filter chamber proceeds via said channels.