METHOD FOR DEHYDRATING A POROUS MATERIAL,申请号WO1999US08312-传众专利搜索

METHOD FOR DEHYDRATING A POROUS MATERIAL

申请公布号：WO9952615(B1)

申请号：WO1999US08312

申请日期：1999.04.15

申请公布日期：1999.12.02

申请人：

DRYTRONIC, INC.

发明人：BJERKE, EGIL;OLSON, HENNING

分类号：B01D61/56;E04B1/70;(IPC1-7):B01D13/02

主分类号：B01D61/56

摘要：A method for dehydrating a porous material (1) using electro-osmosis, includes applying a pattern of D.C. voltage pulses to an anode system (4) embedded in the porous material, wherein the anode system (4) is electrically interactive with a cathode structure (5) embedded in earth (2), and where the pattern of D.C. voltage pulses, has a pulse period T in a range from about 3 to about 60 seconds, and each pulse period T includes a positive pulse duration of T+ from about 0.7T to about 0.97T, a negative pulse duration of T- from about 0.01T to about 0.05T, and a neutral pulse duration of Tp from about 0.02T to about 0.25T. In another embodiment, each pulse period includes two or more positive pulses separated by at least one of either a negative pulse or a neutral pulse, with the positive pulse duration being the combined duration of the two positive pulses.