US1134745A - Apparatus for the reduction of metallic oxids with hydrogen. - Google Patents

Description

E. c; KAYSER. APPARATUS FOR THE REDUC'HON 0F METALLIC OXIDS WITH HYDROGEN.

APPLICATIO'N FILED IULY 18, I910. 1,134,745 Patented pr- 6, 1915.

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ATTOIQNEY E. c. KAYSER. jj APPARATUS FOR THE aeoucnom or mmLu'b -qms wma HYDROGEN.

APPLICATIONVFILED JULY 18; 11110.

Patented Apr. 6, 1915.

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ITNES ATTODNEY E. C. KAYSER. APPARATUS FOR THE REDUCTION OF METALLIC OXIDS WITH HYDROGEN.

Patented Apr. 6, 1915.

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INVENTOE? ATTOIQNEY nnwin'c. imvsnn, or cmomna'rx, OHIO, ASSIGNOR, BY mnsnn nssxcmannrs, mourns i J 1TE; STATES QFEICE 'nvnnosnnamon conrnnv, on cmcmna'rz, one, A c'onroaarxon or OHIO.

arraaaros non imn'nnnucrzou or METALLIC ox ns m ss-mam.

a; all whomitmay concern: a p Be it known that 1, EDWIN O. Karena, a

I subject of tlieKingbf Great Britain, and

fce1tain new and useful Improvements in dpparatus for the Reduction of Metallic oads with Hydrogen, of which the 01- i cation. I of lowing is a full, clear, and exact description, reference being hadto the accompanydrawings, forming-apart olf-this specifiany invention is-to provide an efi'ectiv'e apparatus for the {general treat-- ment ofdry substances withgases and the apparatus is more panti'cularly designed for contact with a currento the gasis required especially at an elevated temperature.

' The apparatus consists of that certain novel-construction and arrangement of parts to be hereinafter particularly pointed out and claimed, whereby the material to be I treated may be :heatedto the desired termperatu-re rapidly and uniformly andthe gas introduced and withdrawn from the appa- ,-.ratus while thecharge is continuously disseminated through the moving gaseous atmosphere.

,In the drawings, Figure 1 is a side 'ele- 3 vation ofmfy improved apparatus. including subsidiary vessels for the separation of entrained material and steam-or other admix'ture fromthe .jgas with which the treatment is accomplishedkFig. 2 'isnn end ele- '-vation of the main vessel for treating the -material. Fig. 3 is a dentral vertical section'of the same. Fig. 4 isa similar section on :an enlarged scale.

.1 is a seamless cylinder, preferably "of welded steel provided with closed ends 2, 3, preferably of cast iron, suitably bolted or riveted to the cylinder, preiier-ably by periphery of the heads and theflanges -5,

. 6, on the ends of the cylinder. -The heads 12, the pillow blocks holding the boxes forming the bearings for the trunnions 7, 8,

'so that the vessel is thus suspended to rotate freely in ahorizontal position. 13 is-a he chemical reduction -of metallic oxids. 1 with hydrogen when "a rolonged intimate spur gear mounted on the trunnion "8.

Through this spur gear the-cylindrical vessel s rotated-atthe desired rate of speed by dr ving mechanism not shown. j Mounted inside of thecyli-ndrical vessel in fixed position --are a series of vanes 14, evtending radiallyfrom the outer surface of the cylin- -der toward the center and running length, wise of-the cylinder. As the cylinder is to be subjected to heat, it is important that the \66 cylinder should. be seamless and intact and not pierced with rivet or bolt openings.

The vanes are therefore secured 1n position as follows: A cylindrical frameworkof the I internal diameter of the cylinder is fformod olf-la pair of annular angle bars 15,

idiot-the ends and-acentral band or hoop l7, and to these end angle bars and the con tral hoop are riveted lengthwisea series of angle bars 18, and then to each of these angle barsa nietal plate or vane 14 is bolted or riveted so that the plates 14 will extend inwardly toward the center, and the inner ends ofthese plates are bent slightly lengthwise at 1-9 in the direction of the proposed rotation of the cylinder. Before one of the heads of the cylinder is secured in place, this framework'with the vanes is passed into the cylinder, .the head bolted in place and the -:lframew-ork with the vanes secured rigidly to the heads by the bolts 20. In this way,-the ends are rigidly secured within'the cylinder. Each trunnion of the head is hollow and threaded to receive pipes which open through the cylindrical heads in one direction and extend through the trunnions and terminate and revolve within stationary stuifiing boxes 21, 22. These stuffingboxcs are threaded to receive gas pipes, 23, which serves as a-supply pipe, and 24, which serves as the escape pipe. The sup- ,ply pipe is provided with the reducing couphng 25, to which is secured the .pipe 26 for the supply of the gas from any proper source. I v

For the purpose of heating the cylinder, a carriage 2' is provided, mounted on wheels 28, swing on "the track 29, and this carridge, is provided Wit-h a number of tubular gas burners-connected together .by T'couplings 60 and controlled by valves'31.

' 32 is thesu-pply pipe for the gas burners, Q

which is coupled to the burners by coupling 33,'so that the'gas supply pipe can be easily disconnected to allow the carriage to bewith;

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drawn from under the cylinder when desired. In order to properly retain the heat, the cylindrical vessel is provided w1th a metallic cylindrical hood 34, which extends from the front to the rear of the end standards, completely encircling the cylinder except at the bottom. At the rear and across the .ends, the standards are also inclosed with plates 35, 36. The hood 84 is provided with the stack 37 and the lower portion of the hood is formed'of removable sections 38, 39, so that when desired the hood can be readily removed from around the cylinder.

For the purpose of cooling down the cylinder, when desired, a spray pipe 40 is provided inserted through the hood at the top and running lengthwise of the cylinder, and at the bottom a perforated steam pipe 41 is located. In order to cool off the apparatus, the burner carriage is withdrawn, steam is first turned on through the pipe 41, and after the temperature of the cylinder has been sufliciently reduced, the spray pipe 40 is turned on. The gas which enters through the supply pipe 23 and escapes through the pipe 24 is turned into the rectangular closed tank or box 42, where any entrained material is deposited and thence the gas is delivered through pipe 43 to' the vertical vessel 44, where it may be sprayed bya descending spray of water supplied through the pipe 45. The vessel 44 is provided with a water seal 46 and the purified gas escapes through pipe 47, to the supply tank. In order to supply and remove the charge from the cylinder, one of the heads is provided with a manhole 48, and one of the vanes 14:

' is omitted oppositethe manhole. A section of the end angle bar 16 is also removed to allow for conveniently scraping out the vessel.

and then filling inthe charge through the open manhole. The manhole is then closed and the heat turned on through the burners, the temperature of the material elevated to the proper point, while the cylindrical vessel is being constantly rotated. The gas is introduced through the center of the apparatus from the supply end and taken out at the delivery end while the heat is maintained, the vanes constantly carrying the material upwardly and dropping it down across the open center and across the gas current. When the treatment is complete, the gas burner carriage is uncoupled and withdrawn from under the apparatus; steam pipe 41 with its spray of steam is turned on to preliminarily reduce the temperature and then the spray pipe 40 is employed to thoroughly cool the apparatus and the charge. The charge is removed by bringing the manhole to the bottom, scraping out the lower section, then rotating the vessel one turn and repeating the operation until the desired amount is withdrawn.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. In an apparatus of the character described, the combination with supporting standards, of a closed seamless cylinder mounted to rotate horizontally therein, gas inlet and discharge pipes to supply a circulation of gas through the cylinder with the principa line of flow along the axis thereof, and numerous vanes secured in fixed position lengthwise the cylinder and projecting inwardly to a point relatively near the axial line of the cylinder, to form compartments with reentering sides, and mouths at the principal point of flow of gas, for the purpose described.

2. In an apparatus of the character specified, the combination with supporting standards, of a closed seamless cylinder, provided with hollow trunnions mounted to rotate horizontally in the standards, gas inlet and discharge pipes. connected with the hollow trunnions to supply a circulation of gas through the cylinder along the axial line thereof, and numerous vanes secured in fixed position lengthwise within the cylinder and projecting inwardly in radial planes to a point relatively near the axial line thereof to form compartments with rentering sides and mouths at the principal point of flow of gas, for the purpose described.

3. In an apparatus of the character specified, the combination with supporting standards, of a closed seamless cylinder mounted to rotate horizontally therein, gas inlet and discharge pipes to supply a circulation of gas through the cylinder, and numerous vanes secured in fixed position lengthwise within the cylinder and extending inwardly in radial planes from the interior surface of the cylinder toward the center to leave a free open space around the axis of the cylinder, and to form compartments with reentering sides and mouths at the principal point of fiow of gas, for the purpose described.

4. In an apparatus of the character specitied, the combination with supporting stand ards, of a closed seamless c linder mounted to rotate horizontally therein, gas inlet and discharge pipes to supply a circulation of as through the cylinder and a tubular Iramework with vanes secured radially and lengthwise thereto, to form compartments with re'ntering sides to carry the material to the top of the cylinder, with the framework secured at the ends to the heads of the cylinder to rotate therewith.

5. In an apparatus of the character specified.the combination with supporting standards, of a closed seamless cylinder mounted to rotate horizontally therein, gas inlet and discharge pipes to supply a c rculation of gas through the cylinder and vanes secured in fixed position lengthwise and radially Within the cylinder to rotate therewith, to form compartments with reentering sides to carry the material to the top of the cylinder. a'portable heater for heatin the cylinder lengthwise comprising a W eeled carriage with a series of gas burners thereon and means for connecting and disconnecting the gas supply pipe therefrom.

6. In an apparatus of the character specified, the combination with supporting standards, of a closed seamless cylinder mounted to rotate horizontally therein, gas inlet and discharge pipes to supply a circulation of gas through the cylinder and vanes secured in fixed position lengthwise and radially within the cylinder to rotate therewith, to form compartments with rentering sides to carry the material to the top of the cylinder, a portable heater for heating the cylinder lengthwise comprising a wheeled carriage with a series of gas burners thereon and means for connecting and disconnecting the gas supply pipe-therefrom, with a hood ina closing the cylinder and heater and steam and Water spray pipes disposed within said hood for lowering the temperature of the cylinder.

EDWIN C. KAYSER.

Witnesses:

ARTHUR H. EWALD, K. SMITH.

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