SU414237A1 - - Google Patents

Description

one

Arrangements are known for the drying of building structures with electroosmosis support, containing a source of direct current to which electrodes are connected, which are in contact with the structure.

A disadvantage of the known devices is that moisture is removed from the structure without removal of water: • 1x components (salts, acids, and alkalis).

The purpose of the invention is to reduce the equilibrium moisture content of structures and remove water-soluble components from cich.

This is achieved in that the device is made with selective ion exchange membranes located between the electrodes and the structure.

The drawing shows the described device.

The device consists of electrodes 1, selective action membranes 2 located between the electrodes and the structure to be dried 3, and a DC source 4 to which the electrodes are connected.

The principle of operation of the device is as follows. By means of the difference of electric potentials created on the electrodes by a source of direct current, a permanent directed electric field is created in the building structure, under the action of which the ions of dissociable molecules of water-soluble substances move to the electrodes. In this case, positively charged ions (annons) move toward the negative electrode, and negatively charged ions (quatone) move toward the positive one. On the way to the electrodes, the ions get onto the surface of the selective membranes (for example, the membranes of the DNU and DPV liqueur membranes), which by means of non-exchange, absorb the ions of a water-soluble Pentorbent number and isolate IT, respectively. At the same time, under the action of eleuro-osmotic forces, moisture is transported to the negative electrode and the structure is drained, while the intensity of the osugen structure is monitored (for example, by the value of electrical decontamination). After the design has reached the required humidity, the direct current source is disconnected, the electrodes and the membranes of selective action are removed from the dried section of the building structure. The spent ion-exchange membranes after regeneration by known methods can be used again.

The use of the proposed device for drying building structures of potash plants allows to obtain a significant effect, in particular, to reduce the equilibrium moisture content of clay brick walls from 10-15% to 2-3%.

Subject invention

A device for drying building structures using an electroosmosis device containing a constant current source to which electrodes are connected, and the connection is in contact with a structure characterized in that.

that, in order to reduce the equilibrium moisture content of the structures and the removal of water-soluble components from them, the device is equipped with selective ion-exchange membranes located between the electrodes and the structure.