DE1262248B - Cell for the electrolysis of alkali solutions - Google Patents

Description

FEDERAL REPUBLIC OF GERMANY

GERMAN

PATENT OFFICE

EDITORIAL

Int. Cl .:

COId

German KL: 121-1 / 12

Number: 1262248

File number: O 9092IV a / 121

Filing date: November 26, 1962

Opening day: March 7, 1968

The invention relates to a cell for the electrolysis of alkali solutions with a horizontal mercury cathode and with several anodes provided at a short distance above the mercury cathode, their anode support rods extending from above into the cell above the cell in a vertical direction are kept adjustable.

In a known cell of this type for the electrolysis of alkali solutions, the anodes are in a vertical position Direction adjustable individually. This has the disadvantage that for the compensation of the anode burn-off a relatively long period of time has to be expended, since each anode is readjusted individually must become. In addition, there is thus the risk that in the event that the readjustment is on one anode is carried out, the burn-up on the other anodes that have not yet been adjusted is so great Combinations of the gaseous products in the electrolytic cell lead to explosions can come that the operating personnel in the ao room in which the electrolytic cell in question is housed is, can seriously endanger.

It has now been found that in electrolysis cells of the type described above, the individual Anodes usually wear out evenly, and on the basis of this found result became the familiar Cell for the electrolysis of alkali solutions according to the invention so improved that the anode support rods held individually adjustable on a common horizontal cross member in the vertical direction are made of an electrically conductive material and the power supply for the anodes of the Forms electrolytic cell, and that the cross member of support columns attached to the cover of the cell is carried, along which the cross member can be adjusted in the vertical direction.

Such an electrolytic cell designed according to the invention has the advantage that the anodes of this Cell not only adjusted individually, but at the same time as a whole in the vertical direction can be. This makes it possible to burn down the individual anodes of the electrolytic cell with a only one setting to compensate and thereby the disadvantages and dangers, as they are with the electrolytic cells occur of a known type, to be eliminated completely. That is precisely what is a significant step forward in the field of the electrolysis of alkaline cells, which is achieved with simple means and especially with regard to it speaks for the value of the measures according to the invention, especially at the known device the application of the measures according to the invention is not possible without Cell for the electrolysis of alkaline solutions

Applicant:

Olin Mathieson Chemical Corporation,

New York, N.Y. (V. St. A.)

Representative:

Dr. E. Jung and Dr. V. Vossius, patent attorneys,

8000 Munich 23, Siegesstr. 26th

Named as inventor:

William C. Gardiner, Danen, Conn. (V. St. A.)

Claimed priority:
V. St. v. America December 4, 1961
(156574)

that this device is completely redesigned. In this known device are namely Anode support rods screwed to individual support plates, each support plate with its underside on two screwed into the cover of the electrolytic cell and adjustable in length by twisting Bolt rests, by means of which the relevant support plate with its ends in the direction fastened upwards against the inward-facing legs of two on the cell lid and is pressed at a distance from opposite support rails. If you wanted to, the invention Following the proposal, in this known arrangement, a common height adjustment of the To reach the anode support rods, not only all the support plates but also those support plates would have to individually supporting screw bolts together with those attached to the electrolytic toe cover Longitudinal beams are removed in order to enable the structure according to the invention, since there is no part of the electrode holding device provided in the known electrolytic cell for the inventive Structure can be used. In the subject matter of the invention, the anode support rods can be supported and adjusted together holding cross member can be achieved in a particularly simple manner in that the support columns with External threads are provided and carry screwed nuts on their upwardly facing end faces the cross member rests. Appropriately, the support columns are on the cover of the

809 517/623

Claims (1)

3 4 The electrolytic cell in the vicinity of its lateral edge casing 30 is tight against the one in question ten attached. Opening pulled through and on top of the So that the cross member has a cell cover lining 33 resting on it with as little loss as possible Power supply for the anodes of the electrolytic cell pressed on in a sealing manner, with a clamping ring forms, the cross member advantageously consists of 5 34 the seal in its correct position Copper, aluminum, silver or an alloy that lasts. The rubber cones 30 close in this way these metals, which prevent at least 60% of the openings in the cell cover 19 and in question Contains metal. . the escape of gases from inside the cell, The invention is referred to below, but with a vertical adjustment of the individual would take on the figure, in which a preferred embodiment of the anodes compared to the cell bottom 29 is still possible. Approximate form of the subject invention is shown, is borrowed. explained in more detail. The cell bottom 29 borders together with two As can be seen from this figure, comprises a lateral U-shaped profile rails 35 and the cell according to the invention trained cell for the electrolysis lendeckel 19 from the interior of the electrolytic cell. of alkali solutions a horizontal cross member 11, 15 The lateral profile rails 35 are with a Hartder covered by a copper bar with a U-shaped transverse rubber cover 36 and are on their lower Section is formed, which legs at one end by means of screw bolts 39 and nuts 40 attached to the cell bottom 29 by a copper soldered to the cross member. The one on top plate 12 is closed. The legs of the U-shaped profile rails 35 are attached to the copper plate 12 flexible line 13 made of copper is connected, 20 resting cover 19 is not shown with the help of which is pressed on by means of a screw bolt 14 and a C-shaped bracket, which is in suitable Screw nut 15 attached to the plate 12 and spaced along the lateral boundary edges are attached to a busbar, not shown, for the cell cover 19. Between the Anode power supply is connected. The transverse cover 19 and the rubber lining 36 is a Carrier 11 has holes 25 spaced between sprinklers 38 made of soft rubber, and for receiving anode support rods 16 and is in a corresponding manner is also a soft rubber its two ends on the cover 19 of the strip 37 between the cell bottom 29 and the Support columns 17 attached to the cell are carried, which are inserted with lower legs of each profile rail 35. External threads are provided and screwed around the through the cell bottom 29, the lateral Have nuts 18, on the upwardly directed 30 profile rails 35 and the cell cover 19 formed th end faces of the cross member 11 rests, whereby the electrolytic cell is to be kept above the ground the cross member 11 is adjusted in the vertical direction before a support carrying the electrolytic cell can. To attach the support columns 17 seen, which from running in the transverse direction on the cover 19 of the electrolytic cell are the lower double-T-beams 41 and longitudinally extending Ren ends of these columns in 35 double-T-beams 42 with internal threads. See sockets 20 screwed, which on the In the embodiment shown has the Cell covers are welded on. Cross member 11 forming copper bar at a Each anode support rod 16 protrudes with its lower cell width of 1.22 m a width of 12.7 to tinned end in a recess one in the to- 20.3 cm with flanges of 5 to 10 cm in length and Corresponding anode 21 screwed-in head screw 22 40 a thickness of 9.5 to 12.7 mm. The copper rail into it, whereby to establish a fixed connection it is then dimensioned so that it has both the mechanical between the anode support rod 16 and the relevant niche as well as the electrical load the head screw 22 the recess like a casting can. shape is filled with lead. As has been shown in practice, there is a need for this lead head in each case a seal 23 made of rubber is placed on 45 of the electrolysis according to the invention for compensation the one of the relevant anode support rod 16 in the erosion tion, usually only the common one The area of the inside of the cell enclosing protective cross members 11 are adjusted in the vertical direction sleeve 24 supports. This protective cover is attached to your den, and only in exceptional cases was it necessary to upper end of an elastic rubber seal 25, a single anode 21 opposite the horizontal, against the one covering the external thread of the relevant cell bottom 29 of the electrolysis cell to adjust the anode support rod 16 screwed nut 26 mercury cathode, is pressed to hold the protective cover 24 in place. The anode support rods 16 extend with their claims: upper ends by corresponding bores of the first cell for the electrolysis of alkali solutions crossbeam 11, and are _ren by screws 55 with a horizontal mercury cathode, with longer flat nuts 27 and 28 together on this cross at a small distance held over the mercury carrier. It is thereby possible, the cathode provided anodes whose from anode carrier bars 16 individually in the vertical Rieh- _o ben in the cell hineinerstreckende anode support Tung relative to the cross beam 11 adjusted to _s täbe over the cell in the vertical direction einkönnen. 60 are adjustable, characterized in that the openings in the cell cover 19, through which the anode support rods (16) extend through the individual anode support rods 16 with the protective sleeves 24, are each of a flexible rubber cone 30 held individually adjustable in the vertical direction, which is closed with, which consists of an electrically conductive material at its upper edge by means of a clamp 31 and 65 and forms the power supply for the anodes of a screw 32 in a sealing manner on the electrolytic cell, and that the transverse protective sleeve 24 of the relevant anode support rod 16 is clamped carrier (11) to the cover (19) of the cell. The lower edge of each rubber-mounted support column (17) is supported, along which the cross member (11) can be adjusted in the vertical direction. 2. Cell according to claim 1, characterized in that for supporting and adjusting the Cross member (11) the support columns (17) are provided with external threads and screwed on Wear nuts (18), on whose upwardly facing end faces the cross member (11) rests. 3. Cell according to claim 1 or 2, characterized in that the support columns (17) on the Lid (19) are attached in the vicinity of its lateral marginal edges. 4. Cell according to claim 1 to 3, characterized in that the cross member (11) made of copper, Aluminum, silver or an alloy of these metals, which is at least 60% of the the metal in question. Considered publications:
U.S. Patent No. 2,627,501. 1 sheet of drawings 809 517/623 2.68 © Bundesdruckerei Berlin