SU982711A1 - Apparatus for electroosmotic dewatering of material - Google Patents

Description

The invention relates to electroosmotic dewatering of wet particulate materials and may be used to dewater materials with a high water content. An apparatus for electroosmotic dewatering of cattle manure is known, comprising a dielectric body, a grid cathode and a flat anode, mounted vertically. The apparatus is designed to conduct studies to determine the electroosmosis coefficient of the material under investigation 1. The disadvantage of this apparatus is the high power consumption for dewatering the material. Also known is an apparatus for electroosmotic dehydration of materials, including a housing with a drained lateral surface and bottom, which is a cathode, and an anode, made of E (rods attached to the lid of the apparatus). materials with a low coefficient of electroosmosis, such as cattle manure, the energy consumption of a known apparatus is large. The purpose of the invention is to reduce energy costs This goal is achieved by placing plates of a porous dielectric material in the space between the anode and the cathode, having a relative dielectric constant higher than that of the particles of the solid phase of the material being dried. Fig. 1 shows the apparatus, general view; Fig. 2 - section A-A in Fig. 1. The apparatus consists of a dielectric body 1, a perforated metal cylinder-cathode 2, anodes 3, made in the form of rods and fixed on a cr Figure 4, installed in the space between the anode and the cathode of the dielectric porous plates 5, the drain pipe 6 at the bottom of the housing I. The apparatus is filled with dehydrated material 7. The dielectric plates 5 are made of a material with a high dielectric constant.

The device works as follows.

The dehydratable material 7 is loaded into the capacity of the cylinder-cathode 2, the housing 1 is covered with a lid 4 with anodes 3, and a source of direct current electrical energy is switched on. The liquid phase passes through the holes in the cylinder-cathode 2, collects at the bottom of the housing 1 and then disappears through the drain pipe 6.

The use of the proposed apparatus will reduce energy consumption for electro: osmotic dehydration of materials up to 500/0.

The table shows the results of experiments on electroosmotic dehydration3,

A kWh / t

M, kg W, kWh

cattle manure (€, 2) in an apparatus with dielectric plates of oriented nylon fiber (3.6) and without plates (indicated in the table; B is the current value of manure moisture; M is the manure mass; W is the electricity cost; A total electricity costs per tonne of manure; S is the transverse dimensions of the particles of the tread material and the solid phase of the material being dehydrated.

As can be seen from the table, when the moisture content of manure decreases from 83% to 77%, the energy consumption per 1 ton of manure is 52% when placed in an apparatus of oriented nylon fiber plates.

Notes

S, MK

Experience with orientation

Claims (2)

Claims An apparatus for electroosmotic dewatering of materials, comprising a cathode body, lateral surface and bottom drained, an anode placed inside the body, and a porridge, characterized in that, in order to reduce energy costs, porous plates material, I have a relative dielectric constant higher than that of the particles of the solid50 phase of the material being dehydrated. Sources of information taken into account in the examination 1. Parfenov V. S. Development and research of the technological process of processing animal excrement in an electric. DC field. Author. dis. on the competition academic degree of candidate. tech. sciences. M., 1976. 2. USSR author's certificate No. 565677, cl. On 01 D 13/00, 1976 (prototype). FIG. 7 FIG. 2