US1538592A - Gas-analyzing device - Google Patents

Description

May 19, 1925. 1,538,592

0. RODHE GAS ANALYZING DEVIGI Filed May 20, 1924 2 Shah-Shut 1 May 19, 1 92s. 1,533,592

O. RODHE GAS ANALYZING-mm Filed May 20, 1924 2 Shah-Shut 2 Patented May 19, .1925.

m Ep STAT ES oLor aonrm, or srocxnomr, swnnrm.

- GAS-ANALYZING DEVICE.

Application filed May 20, 1924. Serial No. 714,710.

- T0,all whom it may concern:

Be it known that I, OLOF Ronrm, a sub ject of the King of Sweden, and a resident of 54 Oden atan, in the city of Stockholm,-

Sweden ave invented a certain new and useful (iras-Analyzin -Device, of which the following is a speci cation.

This invention relates to means for effecting gas analyses and it refers in particular to such gases as will require the addition of a certain in edient, before they are sub mitted to the dlfi'erent steps of treatment by chemical analysis, and among other uses the invention considers the analysis of gases, poor, in oxygen or requiring the addition of oxygenimor before carrying out the testing operations The means suggested in the previous art for the testing of gases poor'in oxygen are generally so arranged and constructed that air or oxygen may be forced or sucked through the respective devices simultaneously with the gases 'to be analyzed. Such devices generally intend to effect a thorough and complete mixing. of the gas to be tested with the gas to be added by any suitable" means, inasmuch} as otherwise a chemical combination cannot be safely and reliably effected by a catalyzer contained in the combustion chamber,'which would seri ously interfere with the exactness of the re- 'sults of the analysis. My invention is intended to device' means to overcome these and other difiiculties, and with this end in view the oxygen which may for instance be required for a combustion, 1n the practice of 'my invention is 'not directly added to the gas to be tested, but provision is made that the'oxygen required for the combustion is introduced into a storage' receptacle or-the like, which I shall call an accumulator for the sake of brevity, between two succeeding analyses, that is to say before and after each analysis, the said accumulator receiving the oxygen and having means of yielding and introducing the oxygen necessa for the combustion to the gas to be teste upon the subsequent passing of such gas through the combustion chamber. Provision is also made for the re-charging of the accumulator with oxygen by the admission of a fresh W quantity of air or of oxygen, before proceeding to" make the next analysis.

Among other important advantages of my improvement I may mention for instance the following I 1/. It maybe safely assumed that there- 2/the gas to be tested may .be used in as large a quantity as possible inasmuch as there is no further mixing of the gas to be added with the gas to be tested, thus also 3/warranting a more exact and reliable measurement. i

The device Will be more fully described with reference to the accompanying drawings, showing by way of example various forms of embodiment of the principles of my invention in Figures 1, 2 and 3 in a substantially diagrammatic representation.

Upon the conduit l-which communicates with a suitable level apparatus or the like a measuring member'Q with equalizing vessel or chamber 3 and the closing or looking member 4 are arranged in the usual manner. To these different members the novel member 5 is added'according to my invention fining member or look 6: .Upon the flowin back of theconfining'liquidfrom the leve vessel into the members 2, 4: and 5.the air sucked in through the conduits 6 and. 7 is forced through the combustion chamber 8 either previously-thereto or simultaneously with the volume contained in this space 3, the air sucked into the space 5 being thereby removed, so that the accumulator provided at or near the combustion'chamber 8 fmay received the oxygen from the air. The accumulator is a substance capable of bein saturated with oxygen which can give 0 this oxygen during combustion, such as for example, copper oxide. Before starting'the analysis proper, that is to say, before the bi'flIlQhEdgQfT section 9 is cut off by the rising *confining liquid, the air has-been perfectly removed from the'space 5, so that the analysis of the gasgto be tested'may now be effected in the receptacle 2; this quantity of gas under test will find the necessary oxygen for combustion in the accumulator at 8 which it takes'up in accordance with the requirements. This procedure is repeated before and after every analysis.

In the modified form of arrangement according to Figure 2* looking or confining arrangement 10 is provided possessing two ascending legs 11 and 12 from which two branch pipes 13 and 14 are shunted off.

,- The branch 14 is connected to an aspirator.

When the confining liquid enters the level apparatus the descending of the level in the confining member 10, besides producing the usual well-known; phenomena, causes in the first place the exposing of the joining points 15 of the branches. At. the same moment the aspirator is in position to suck air through the branch 13, the conduit 16, 17, 18 and the connecting branch 14. From this supply of air the accumulator replaces the quantity of oxygen consumed in the preceding analysis. The height of the branching ofl' joints 15 is so arranged that the locking takes place before the locking in the confining member 19, so that in the beginning of the analysis no more air is sucked through the apparatus. Only after the analysis has been finished and the confining or looking liquid has been returned into the level vessel, is air again sucked through the combustion chamber in the manner hereinbefore described, until a fresh analysis is to be made.

In the arrangement of the modification of Figure 3 the measuring vessel is indicated at 21, and 22 indicates the mercury confining members of the switch, 24 is a clamp in the conduit, 25 is the measuring bell, and 26 the absorption vessel.

In the position of the mercury confining members 22 of the switch indicated in full lines in the drawing air is free to pass in any desired direction through the electric furnace 23. From this air the ox gen carrier may be again perfectly fille up and saturated with oxygen. During this time an analysis, for instance a test of the pro-' ducer-gas for its contents of carbonic acid is effected. After the termination of this analysis the switch causes the mercury confining members or looks 22 to be shifted into the position shown in dotted lines. In this latter position no air can 'pass through the electric furnace. The new volume of gas to be tested now passes by way of the first lock 22 and along the path indicated by the arrow 28 through the second lock 22, and thence onward in the direction indicated by the arrow 29 and into the measuring bell 25, or, in case the clamp24 should be closed, in the direction indicated by the arrow 30 into the absorption vessel, and thence into the measuring bell.

The gas passes in the direction of the arrow 29 through the open clamp-24 in case a test for hydrogen-contents is to be made, while, when the gas with the clamp 24 closed passes in the direction of the arrow 30, an analysis for the sum of the contents of carbonic acid and of the totality of the combustible gas constituents can be made. During these analyses a portion of the oxygen of the copper-oxid cartridge in the combustion furnace 23 is of course consumed. After the mercury locks 22 have been again The invention, it should be understood, is

capable of other modifications and changes in accordance with varyin conditions of its employment for practica purposes, and

without deviating fromthe spirit of the invention, as particularly set forth in the claims hereunto appended.

I claim 1. The method of testing gases and gas mixtures, which consists in submitting the gases and gas mixtures to combustion with an admixture of oxygen, and b the a d of oxygen-transmlttmg means, an passing an oxygen containing gas current oversaidtransmitt-ing means between two succeeding analyses, in order to keep the oxygen carrier supplied with fresh oxygen and at full activlty.

2. In-a device'of the kind described, a measuring vessel, a leveling vessel, liquid confining means communicating therewith, and gas introducing means communicatin with the measuring vessel, an oxygenan air storage vessel and a by-pass on which said storage vessel is arranged, and suction creating means, connected to said storage vessel.

3. In a device of the kind described, a measuring vessel, a leveling vessel, liquid confining means communicating therewith, gas introducing means communicating with the measuringvessel, combustion means for gas communicating with the measuring vessel, a by-pass conduit. shunted on the combustion means and the measuring vessel, and a storage vessel on said by-pass adapted for the reception of oxygen and air, and means for creating a suction on said by-pass.

4. In a device of the kind described in combination, gas measuring means, a combustion chamber, gas-and-liquid confining means, and gas-accumulating means adapted for the storage of oxygen and air, shunted on said confining means, and adapted to be filled with oxygen-containing gas durin the flowing back of the confining liquid? which last mentioned gas is introduced into the combustion chamber upon the movement of the confining liquid in the opposite direction and saturates the oxygen-carrier in said chamber with oxygen.

5. In a device of the kind described, a measuring vessel, a leveling vessel, a combustion chamber operatively connected therewith, a by-pass conduit shunted on the combustion chamber and the measuring vessel, an enlargement on said by-pass, a liquidconfining vessel on said b -pass intermediate the enlargement and the combustion chamber, and open to the outside 'air.

6. In a device of. the kind described, a measuring vessel, 8. level vessel, acombustion chamber connected thereto, a by-pass conduit shunted on the combustion chamber and the measuring vessel, two ascending' branch pipes on said by-pa'ss, said branches being connected to the combustion chamber at diflerent ends thereof, and air introducing means, adapted for connection with said branch pipes.

7. In a device of'the kind described, a

measuring vessel, :1 level vessel, a combus-" tion chamber connected therewith, a confining and locking member intermediate the level vessel and the measuring vessel, a bypass shunted on the combustion chamber and the measuring vessel, extensions on said by-pass adapted for the admission and storage of oxygen containing gas, and connected to the combustion chamber, and arranged at such height with relation to the intermediate confining member, as to be adapted to produce the confining of gas in said extensions before efiecting the confining in the confining and locking member.=

In a device. of; the kind described, a

the switching means and the combustion chamber, and regulating and controlling means shunted between the absorption means and said by-pass.

In testimony whereof I have signed this specification in the presence of one witness.

OLOF RODHE.- Witness:

Hnnnnnr BENSON.

ed to said conduits, aby-pass shunted on

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