DE513290C - Electrolytic cell with bipolar electrodes - Google Patents

Description

In known forms of electrolytic cells with bipolar electrodes the part of the cell container surrounding the current path consists of a special Means firmly held together series of metal frames, which by non-conductive or poorly conductive layers are separated from each other.

In the filter press cell, these metal frames are closed, usually circular or rectangular. The frame and the intermediate layers are supported by several tie rods held together on the first and last frames of the series or on special ones Attack the final row of pressure plates. In the case of the trough cell according to the patent 410772 the metal frames that enclose the current path are open at the top. You wise U-profile with protruding from the current path

ao thighs on and are supported by the cement in which they are embedded, as well as by others U-shaped frames, which are also embedded in the cement, and their profile legs turn towards the stream, held together.

In both arrangements, repairs are difficult if the cell container on one The point is leaking, in the case of the filter press cell, too, if a diaphragm or an electrode plate becomes defective.

It has been suggested to hold the series of metal frames together and intermediate layers multiple times a bevy of detachable, along the frame circumference with Distance between successive holding devices, such as clamps, clamps, screws o. The like. To be used so that each of these groups only two consecutive in the series Frame attacks and holds together.

When using such holding devices, it is possible to hold the cell container on a to share any place without compromising the cohesion of the elements in these parts to be affected.

The arrangement can be carried out in such a way that all pairs of successive Frames are connected to each other. It is enough if small groups of elements can be taken out of the row at once, the elements in Connect the groups firmly together and then only need the detachable connections apply to each pair of abutting frames at the ends of such groups.

According to the invention, instead of a flock of along the frame circumference with Distance between successive holding devices, which are only isolated, separated from one another Create pressure points and therefore cannot guarantee a tight seal of the joints, a clamp-like device for holding two consecutive frames together used made of a by non-conductive or poorly conductive layers of this frame separate holding frame

Claims (1)

stands, the U-profile with the current path facing Has thighs. In the drawing, for example, is the longitudinal section of a constructed according to the invention Cell container shown. The current path indicated by arrows is enclosed by the frame io, for example made of iron with a U-profile and outwards, d. H. of the Current path turned away legs are executed. These frames are through liners ii, which for example consist of asbestos slate, separated from each other. Of the from the frame io and intermediate layers ii is formed at the ends by the welded iron sheets 12, 13 closed. Every two consecutive frames10 held together by a holding frame 14; the holding frame shows a U-profile thighs slightly spread inward; it is dimensioned so that it has the Profile legs of the inner frame 10 held together by it clasps around like it reveals the drawing, the frame being by non-conductive or bad conductive intermediate layers 15 are separated from one another. To close the joints tightly, with layers 11 and 15 serving as packings, the legs of the holding frame 14 are squeezed together by expanding bodies which are inserted into the spaces between the holding frames. In the version shown, these expanding bodies consist of wooden wedges 16. The whole cell container is placed in a cooling water vessel 17. The wedges 16 are along the The circumference of the frame 14 is arranged so that gaps remain free through which the cooling water, the webs of the inner frame 10 from the outside 4.0 flushing, can circulate. By wedging the holding frame 14 a uniform distribution of the pressure acting on layers 11 and 15 is achieved. The layers 11 become the layers 15 from permanent contact with the hot electrolyte (lye) of the working cell protected. For the layers 11 a building material that is as resistant as possible to the hot electrolyte, e.g. B. asbestos cement, choose, for the layers 15, however, rubber or some other insulating Building material that is well suited for packaging because of its elasticity. Patent claims: " 1. Electrolytic cell with bipolar electrodes, in which the Current path enclosing part of the cell container made of a series of metal frames, which have a U-profile with legs facing away from the current path, and there is non-conductive or poorly conductive layers inserted between them and to hold the series of metal frames and interlayers together multiple times a releasable retaining device is used, the only two consecutive in the series Holds metal frame together, characterized in that a clip-like device for holding together of the adjacent legs of two consecutive frames (10) ~ from one by non-conductive or poorly conductive layers (15) of these frames separate holding frame (14), the U-profile with the current path facing Has thighs. 2. Electrolytic cell according to claim i, characterized in that the profile legs of the holding frame (14) by expanding bodies (Wedges 16), which are inserted into the spaces between the holding frames, be squeezed together. 3. The electrolytic cell of claim 2, wherein the cell container is covered by a cooling water jacket is surrounded, characterized in that the expansion body (16) made of wood exist and alternate with gaps along the circumference of the holding frame (14). 4. Electrolytic cell according to claim 1, wherein also between the holding frame and The metal frames attacked by them were inserted into layers that acted as packings are, characterized in that these layers (15) made of rubber or a other elastic building material exist, while the layers (11) between the metal frame (10) made of a building material that is as resistant as possible to hot electrolytes, for example asbestos cement exist. 1 sheet of drawings