US1249821A - Process of making cyanogen compounds. - Google Patents

Description

H. PHILIPP @L H. FOERSTERLING. PROCESS OFIVIAKING CYANOGEN COMPOUNDS. APPLICATION f|LED1uNE4,19|2. AENEWED MAY n. 19u.

Mtented Dee. 11, 1917.

Q 51mm wocs 333137 Relire/c1121) Q9 WALT@ HERBERT PHILIIPP AND HANS FOERSTERLING, 0F PERTH AMBOY, NEW JERSEY.

reinen PBCESS 0F MKING CYANOGENCOMPOUNDS.

Specification of Letters Patent. Pwt'ntjied DML-ill, 1R91?, 0rigina1 application tiled June 2, 1910, Serial No. 564,672. Divided and this application filed. June 4:, 1919, I

Serial No. 701,570. Renewed May 11, 1917. Serial No. 168,045.

To all whom it may concern:

. Be it known that we, HERBERT PHILIPP, a citizen of the United` States, and Hans FOERSTERLING, a subject of the Emperor oi' Germany, both residing at Perth Amboy, Middlesex county, New J ersey, have invented certain'new and useful Improvements in Processes of Making Cyanogen Compounds, of which the following is a specication.

This invention relates to a method of mak ing cyanogen/compounds by vaporizing a metal capable of forming cyanogen compounds and reacting the-vaporized metal with vn-itrogenous and carbonaceous matter and is af division of a pending application tiled June 9J, 1910, Serial No.r561,672;

ln United States Letters yPatent No.

993,391, dated May 30, 1911, MoNitt has disclosed a method for reducing metals, based on the electrolysis of metallic compounds, the alloying. of the separated metal with the cathode metal'and theseparating of the two metals by passinga current of inert gas through the hot` alloy whereby the moreyolatile metal is vaporized.

We have found that, with a metal capable of forming cyanogen compounds and with nitrogen as the inert gas, the passing of the volatile metal vapors together with the nitrogen through a furnace containing carbon,

' easily forms cyanogen compounds.

In United States" Patent No. 914,100, Acker has disclosed a process ot producing I oyanogen compounds i by electrolyzing a molten compound of a metal, alloying the separated metal with the` cathode metal, removing the alloy from the electrolytic cell and reacting on the alloyed metal with nitrogenous and carbonaceous reagents.

Uur method differs fromAc ers in that we lirst separate the volatile vmetal from the cathode metal and then bring the volatile metal in contact with nitrogenous and carbonaceous matter.l` f

ln the following we have described, in-

connection with the accompanying drawing, one way of practising our process, the features thereof being more particularly pointed out hereinafter in the claims.

The drawing is a diagrammaticrsectionalV View of a form of apparatus illustrating one way of carrying out our process and in connection therewith wej shall describe our processas applied tornnstance to the pro-A duction of an alkali cyanid such as sodium cyanid. y l,

We electrolyze sodium chlorid in the presence of a suitable cathode metal such as lead, in any well-known manner and obtain an alkali metal alloy, specifically sodium lead alloy, as described by McNitt in his United States Patent No. 993,391 for instance. As McNitt has fully described his cell in the patent referred to, we shall not describe it here further than thtit the reference numeral 1 indicates the electrolytic chamber; 2 indicates the furnace. chamber; 3 indicates a transverse partition extending from side'to side of the chamber 1 leaving an opening 4 at one end between the end of the partition and the wall of chamber 1, the other end of partition 3 being bent so as to form a seal 5 into which depends end wall 6 of chamber l. 7 7 indicate the anodes, 8 the cathode metal, molten lead for instance, 9 the electrolyte, sodium chloridV Jfor instance, 10 a pipe Jforl conducting an inert gas, such as nitrogen, to a point beneath the surface of the contents offurnace chamber 2 and 11 indicates afur nace for heating furnace chamber 2. lin the operation of the cell as described the sodium is separated from the chlorin, which latter passes oftin the usual manner, and is alloyed with thecathode metal. Thev alloy is caused to circulate out of chamber 1 through seal 5 yinto furnace chamber 2, as described by McNitt, where it is maintained at a suitable temperature and subjected to the action of the inert gas which passes through the same, the gas carrying the sodium vaporthrough connection 12 into retort 13, heated in any suitable manner (not shown), the remaining portion of the molten alloy, freed from some or all of the sodium, being drawn through channel 14: and opening 4 into chamber 1 where the residual metal again serves as'the cathode and the operation repeated.

The sodium lead alloy is kept at such a temperature in chamber 2 as to permit the inert gas, specific/ally nitrogen, to beintroduced therein without reaction therewith so that the gas may carry oft1 the sodium vapor `as a metal perse as described. The retort rests on a grate 15 through which the alkali cyanid, formed as described, drips into the drum 16 of the retort and is thence permitted to flow oli' in any suitable manner, as through outlet 17. Fresh charcoal is added from time to time as required. Very little fuelis required in practising our process as the formation of cyanid takes place at not much aboye the temperature at Which the electrolysis takes place.

It is to be understood that We do not limit ourselves to the process as described; The metal from which the cyanid isformed may be produced Without intermediate formation of an alloy, for instance sodiumchlorid may be electrolyzed by a-diaphragm process and vthe sodium directly vaporized with nitrogen; instead of blowing nitrogen into the alloy, hydrogen or lother inert gas may be used and the process may be carried out in two steps ifdesired.

What We claim and desire to secure by Letters Patent is: l

1. The method of making cyanogen compounds consisting in vaporiing a metal capable of forming cyanogen compounds and reacting upon said metal While in the vaporous state with nitrogenous and carbonaceous matter.

2. Themethod of making cyanogen compounds consisting in vaporizing a metal capable of forming cyanogen compounds in the presence of a current of nitrogen and reacting upon said mixture While in a Vaporous state With carbonaceous matter.

3. The method of making sodium cyanid .consisting in Vaporizing the sodium and reacting upon the sodium While 1n a vaporous state with nitrogenous and carbonaceous matter.

4. The method -of making sodium cyanid consisting in vaporizing the sodium in the presence of a current of nitrogen and reactF ing upon the sodium nitrogen vapors While lin the vaporous state lWith carbonaceous matter. Y

5. The method of making cyanogen compounds consisting in vaporizing a metal capable of forming cyanogen compounds from a molten mass containing the same, conducting the metal While in the vaporous state to a retort separate from the Vaporizing chamber and reacting upon the same in the retort With nitrogenous and carbonaceous matter.

6. rlhe method of making cyanogen coinpounds consisting in vaporizing, in a current of nitrogen, a metal capable of forming cyanogen compounds from a molten mass containing the same, conducting the mixture While in the vaporous state to a retort separate from the vaporizing chamber and reacting upon the same in the retort with carbonaceous matter. l

7. The method of making cyanogen cmnpounds consisting in vaporizing a metal capable of forming cyanogen compounds, conducting the metal While in the vaporous state to a retort separate from the Vaporizing chamber and reacting upon the same in the retort with nitrogenous and carbonaceous matter.

8. The method of making cyanogen conipounds consisting in vaporizing, ina current of nitrogen, a metal capable of forming cyanogen compounds, conducting the m1X ture While in the vaporous state to a retort vseparate from the vaporizing chamber and reacting upon the same in the retort with carbonaceous matter.

' 9. vThe method of making sodium cyanid consisting in Vaporizing molten sodium metal, conducting the metal While in the vaporous state to a retort separate from the vaporizing chamber and reacting upon the same in the retort With nitrogenous and carbonaceous matter.

10. The method of making sodium cyanid consisting in vaporizing molten sodium metal in the presence of nitrogen, conducting the sodium nitrogen miXtu re While in the vaporous state to a retort separate from the vaporizing chamber and reacting upon the same in the retort With carbonaceous matter.

In- Witness whereof, We have signed this specification in the presence of two subscribing Witnesses.

HERBERT PHILIPP.

HANS FOERSTERLING.

Witnesses:

O'r'ro K. ZWINGENBERGER, ARNOLD N ORMENBERG.

llt is hereby certied 'that Letters Patent No. 1,249,821, granted December 11, 1917, upon the application of Herbert Philipp andHans Foersterling, of Perth Amboy, New Jersey, for an improvement in "Processes of Making Cyanogen Compounds, Were erroneously issued to the inventors, said Philipp and Foersterling,

Whereas said Letters Patent should have been issued to The Roessler d'8 Hasslacher 'Chemical U0., of New `York, 1N. Y., al corporation of New Pork, as shown by the reoords of assignments in this ofce; and that the saiol Letters Patent should be read with this correction therein that the seme may conform to the record ol the ease in the Patent @Price l Signed en@ sealed this 19th dey of March, A.. D., 1918.

R. P. WHPPEHEAD,

Acting "Commissioner of Patents.

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