US1463204A - Water jacket - Google Patents

Description

July 31, 1923-- l C. DREFAHL ET AL WATER JACKET 'Filed Dec.- 6 191-9 2 Shoots-Sheet 2 6 v, Z 3% NW W mi Z JWM K LOUIS c. DRE'FAHL, or LAKEWOOD; AND

WHITFIELD n. can-son, or soU'rH EUCLID,

OHIO, ASSIGNORS .TO THE GRASSELLI CHEMICAL COMPANY, OF CLEVELAND,

OHIO, CORPORATION OF OHIO.

WATER JACKET;

Application filed December T all whom it may concern Be it known that we, LOUIS O. DRESF'AHL and .VHITFIELD R. CARSON, both citizens of the United States, and residents of Lake wood, county of Cuyahoga, and State of.

Ohio, and of South Euclid, county of Guy ahoga, and State of Ohio, respectively, have jointly invented a new and useful Improvement in -Water Jackets, of which the following is a specification, the principle of the invention being herein explained and the best mode in which we have contemplated applying that principle, so as to distinguish it from other inventions.

The present invention, relating, as indicated, to water ackets, is more particularly directed to the use of the improved type of water jacket in a furnace, such as is commonly used for the making of silicate of soda. Silicate of soda can be made by the fusion of sand' and salt cake, but it is found that this mixture has a rapid corrosive action on the refractory material. with which the furnaces are commonly lined. This corrosive action is so rapid that it necessitates the frequent shut-down of the furnace for repairs and replacements,'and greatly lowers the output of the furnace. The present invention is particularly directed to an improved type of furnace for use in making silicate of soda, whichwill avoid the results noted above and which which will permit of a practically continuous operation of the furnace chamber through long periods of time. These improved results are secured through the use of our improved type of water jacket, and. its arrangement and mounting in the furnace walls. To the accomplishment of the foregoing and related ends, said invention, then, consists of the means hereinafter. fully described and particularly pointed out in the claim.

The annexed drawing'and the following description set forth in detail certain mechanism embodying the invention, such disclosed means constituting, however, but one of various mechanical forms in which the principle of the invention may be used.

In said annexed drawings r Fig. 1'is an elevation of our improved furnace partially in section, "showingthe general location of the water jackets; Fig. 2 isa side elevation of the jacket; Figs. 3, 4:

and 5 are sections on the lines 3-3, 4-4,.

' e, 1919. serial no. 343,095.

and 5.5, respectively, in Fig. 2; Fig. 6*is a partial side elevation of amodified construction; Fig. 7 is: a section on the line 7-7, Fig. 6; and Fig. 8 is a partial transverse section through the furnace chamber showing the mounting ofthe water jacket with respect to the walls of the furnace. 1

In Fig. 1 therelSI'ShOWIl a furnace of a common typev havingspaced walls 1 aindean arched roof 2, and being provided witha series of water jackets 3 extending around i mea er P-ArNT" cr tics. I

the walls of the furnace. 1 Each. of these I jackets 3 is provided with suitable intake conduits 4c, and with outlet conduits 5, which may be connected in any desiredmanner of sources of supply and drain Each water jacket is also provided with .manholes 6 and suitable removable covers 7 therefor. The construction of the water jacket is shown in Figs. 3 to 7, inclusive. The jacket consists of two open box- like members 8 and 9, received one within the other, and welded along their over-lapping edges 10 to make atight and integral container. Wherever there is an inlet or'outlet connection the connection is formed in the manner shown in Figs. 3 to 7, certain connections being indicated in Figs. 3 and 4, and consisting of a suitably formed col lar 20 of sheetmetal adapted to closely fit against the rounded edge of the part 9 of the jacket, to which it is welded to provide a seamless joint. The same construction is used for the connections shown in Figs. 5, 6 and 7, while for all inletconnections abafile plate 12 iS'PI'OVldQd Within the jacket to cause an improved spreading and distribution of the incoming water. i The re sulting water jacket is as nearly perma nentlywatertight as it is possible to make it, and the single joint or seam is provided onthe ends, top and bottom of the jacket and ata point spaced a considerable distance from the front. wall 13 of the jacket,

which isnext to the furnace chamber.

In Fig. 8 there. is shown one wall of the furnace chamber which consists ofsuitable refractory material.

The water jackets 3 are built into this furnace'walland'extendj through flush with the wall of the furnace so thatthey are in direct contact with the molten material therein. a I

A disadvantage of course of having a water jacket in direct'contac't with the mol- 5 loss, and to avoid any great loss the depth of the water jackets is kept as low as possible, so that in the furnace the jackets do not extend more than a few inches above the maximum height of'the charge at any time during fusion. They are so mounted in the walls of the furnace as to extend a short distance above and below the flux line, at which point the greatest corrosion takes place.

It has'been found that a furnace. so constructed is capable ofpractically indefinite and continuous operation, and whilea small amount of heat from the furnace is lost through the radiation of the waterin the jacketsthis slight loss is more than com-t pensated for by the better action and very much longer life of the furnace chamber.

:A modification of the-jacket is shown in Figs. 6 and 7, in which the outlet connection is disposed at an angle, but this conduit 11 is'attached in the same manner asshown in previously described figures.

Other modes of applying the principle of our invention may be employed instead of the. one explained, changerbeing made as regards the mechanism herein 'disclosec, provided the means stated by the following claim or the equivalent of such stated means be employed.

We therefore particularly point out and distinctly claim as our invention In a silicate of soda furnace the combination of a furnace chamber adapted to receive and melt a mixed charge of materials, said chamber having its walls about its upper and lower portionsformed ofrefractory material, a narrow .belt of water jackets disposed at an intermediate point in the inner wallsv of said furnace between said upper and lower sections of refractory material, said water jacketed section being disposed in contact with the material to be melted andvat the normal flux line of the molten charge and extending a slight distance above and below thesame;

Signed by us, this 3rd day of December, 1919.

LOUIS .C. DREFAl-IL. W'HITFIELD R. CARSON.

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