Патент USA US2128381код для вставки
Àug. 30, 1938. A. F. sPrrzGLAss ET À». ~ 2,128,381 GAS ANALYZ ING A APPARATUS Filed Feb. 5,1956 5 Sheets-SheetI 1 Aug. 30, 1938. 2,128,381 _A. F. SPITZGLASS ET AL GAS ANALYZING APFARATUS Filed Feb. 5, 1936 3 Sheets-Sheet 2 ,........¿ Ã/Geofge WGrísdaZe èy maan/wy# . . Attorneys Aug.j-30, 1938. ' v l A. F. jsPlTzGLAss ET A1. GAS ANALYZING APPARATUS Filed Feb. 5, 1936 '2,128,381 s sheets-sheet 5 Patented Aug. 3o, 193s 2,128,381 UNITED STATES PATENT OFFICE 2,128,381 GAS ANALYZING APPARATUS Albert F. Spitzglass and George W.' Grisdale, Chicago, Ill., assignors to Republic Flow Meters Coinpany, Chicago, Ill., a corporation of Illi nols Application February 5, 1936, Serial No. 62,420 s claims. (c1. .2t-.256)> invention relates to apparatus treatingThis gases with liquid reagents and theforlike, as surepressure. that the measurement is always at the same gas agent such as sodium or potassium hydroxide so0 lution. ' An object of the invention is to provide an ap- The above and other objects and features of the invention, including various novel construc- 10 tions and desirable arrangements, will be appar perature fluctuations, in which the gas (both before and after treatment by the reagent) is at room temperature and at atmospheric pressure so that no correctlons are necessary, and which preferably has the gas analyzing devices arranged drawings, in which: Figures 1 and 2 are vertical sections, at right 15 angles to each other, of a CO2 recorder, with most of the parts ppearing‘ in elevation; Figure 3 iS e» Sectional diagram, With the Vari in a readily removable unit to facihtate cahbra- 011s Darts ShOWn Side by Slde t0 feellltate an 11n 20 tion and repair. One important feature of the invention relates derstanding of their co-operative action; Figure 4 is a partial section showing the pen 25 of heat exchanger submerged in the reagent. pheric pressure, to a novel sampling device which is preferably arranged above the reagent, and which measures off deñnite quantities of the gas 20 Figures 7 and 8 are sectional views of the one- 25 sitions; and Figures 9 and 10 are sections on the line 9-9 of Figure 3 showing the gas-measuring means respectively attached and detached. 30 30 for treatment by the reagent. This device in itSelf embOdÍeS Substantial HOVelÈY, especially in the arrangement of a vertically reciprocated contemer WhlCh meeslll‘es Off the ges and WhÍCh ÍS The instrument illustrated comprises a panel or complete or partial outer casing I0 supporting at its upper end avertical motor l2 driving a gear 35 serves the purpose 0f a Simple and effective pump shown with ñller means I5 for nlling with oil 35 irltO and through the reagent, Which eCÉS 0n them to absorb the CO2 Content The gas-measuring container shown carried by a novelvalve head means which 40 is providedis with improved one-way t0 Contr01 the 50W 0f the gas- 45 in the reagent, and W‘hiCll delivers gesfat etmOS- device i4 drives an operating shaft I6 having at one end an arm I8 connected by a vertical link 20 t0 a gas-measuring device hereinafter 40 described The other end of the shaft I6 carries a double operate a seal for the discharge of the final gas 45 e 50 after treatment by the hydroxide bath or other unit I4. Its lower end is operated, as hereinafter 50 2,128,381 2 telescopically within the lower end of the tube 68. The tube 84 is substantially smaller in diameter gear pump 34 (Figure 3) in an auxiliary casing 36 (Figure l) which acts to draw ñue gases, or other gases to be analyzed, through a conduit 38 A than the tube 68, and oí course is also consider ably smaller in diameter than the opening in the bottom of the container 18. The head 14 also has sealed thereto at its up per end a vertical tube 86, enough smaller in diameter than the vtube 60 to provide a substantial (having a glass vessel 40 partly ñlled with water, to give a visual indication, if desired) from any desired source of such gases. Condensed mois ture drips down into and overflows from, a pipe 4| bent to provide a seal or trap at its lower end. clearance therebetween, and which projects into and forms in eiîect a telescoping connection The gases pass from the pump into the upper a drain plug 1 therewith. The clearance insures that the reser part of a container’42 provided with to a. predetermined level withVA - Voir 56 is always at atmospheric pressure. 44, which is filled The tube 86 opens at its upper end into a pas Passages 46 and 48 may be provided into the ` sage '88 having as a continuation thereof a verti container 42, also, from the conduit 38Hand the 'cal open tube- 96 (Figures 7 and 8) surrounded by oil. - » passages neutral point of the _ 34, a well of mercury 92. The well of mercury 92 is a space which communicates with the passage 16, opening below the normal level of the oil in con tainer 42. This serves to circulate oil through the pump, to seal it. The container 42 may have suit and it contains a one-way valve in the form of a very lightcup-shaped member 94, inverted over the end ofïthe tube 96, and guided by means such able ñller means 50. 20 The gases next pass through a conduit 52"and,-- as pins 96 so thatits lower edge can dip into the When the member 94 is in the position of Fig tion, pass through a heat exchange device (illus 20 according to an important feature ofthe inven mercury 92. y . When themember 94 is in the posi ~ As explained below, in analyzing~ flue' gases for CO2 content, this reagent would be a solution of caustic potash or soda. The amount of this re agent and the size of the container or reservoir ping into the mercury 92, communication between passages 88 and 16 is cut oiî. As passage 88 is al ways at atmospheric pressure, and as member 94 if is very light, a` slight suction in passage 16 is suffi cient to open the valve. Also, to insure »a minimum of reaction of the 58 are such that heat is dissipated into the room a fast as it is aborbed from the yflue gases, thus reducing the gases substantially to room tempera gases on the mercury 92, as shown best in Figure 8, the member 94 is very slightly larger than tube 90, and has a considerable area subject to suction in passage 16, so that while there is a considerable height of mercury sealing the valve whenclosed, as inl FigureV 8, the-valve nevertheless»v opensA so quickly that there is substantially no tendency` for the gas tobubble through the mercury. ^ The coil 54 opens at its end into a vertical tube 69 substantially at its center. The lower end of 35 the tube 66 passes through and is sealed to the bottom of the reservoir 58, and opens outside' the reservoir, to discharge excess flue gases from the instrument, and to insure that gases withdrawn for analysis are at atmospheric pressure. The upper end of the tube 60 opens above the level of the reagent 56, and maintains the interior of the reservoir 58 at atmospheric pressure. „ tion of Figures 3 «and 8, with its lower edgedip reservoir 58. ' y 88 to the~ passage 16„without passing through the conduit) submerged in a liquid reagent 56 in a ture at all times. .. ures 5, 6, and '1, the gas passes freely from passage 25 trated as a coil 54 forming a continuationvofV the 25 - n Assuming a point in the cycle illustrated in Fig ure 3, with the container 18 full of mercury'and rod 28 reciprocates upwardly , valve 94 closed, the _ - Mounted on the lower end of the reciprocating as illustratedin Figure 5, causing a reduced pres- . ì sure in the container 18 as the mercury runs-out connecting rod 20 is a pivot 62 (Figures 9 andl 10) adapted to seat in a bearing opening 64 formed 'in of it, opening valve 94 as shown in detail vin-Fig a cast part 66 brazed or soldered to the upper end ure ‘7, and drawing inV a predeterminedl amount of gas from the tube 69. VIt is important to note of a hollow vertical tube 68 sliding in an opening in the top of the reservoir 58. The part 66 is that by our novel arrangement of the parts de formed with a passage 10 which is normally scribed above,»this gas is at roomA temperature and at atmospheric- pressure, and therefore for 50 closed by a screw 12 which locks the pivot in place. all practical purposes the chargefis always not Thus detaching the tube 68 from the rod 20 in merely the same volume but that thisrvolume is volves removing screw 12 which, as shown in-Fig ure 10, automatically insures that at that time not subject to substantial variations due to tem- . » perature and rpressure diiîerences. the interior of the tube 68 is at atmospheric pres Figure 6 shows the end ofA the upward stroke, 55 sure, and there is no danger of suckingany of the reagent 56 up into the tube. ' ~ The tube 68 is sealed into a novel head\14, of non-corrosive material such as one of the syn-r thetic resins, with an opening in its side in registry 60 with a passage 16 formed in the head... The lower end of the tube 68 opens into, and is sealed to the upper end oi, an open-bottom container 18, of synthetic resin or the like. . . v . . The container 18 which forms the measuring 65 chamber oí the sampling device dips into, and at all times has its lower end sealed by, a body of mercury 89 contained in a vessel y82 which is mostly submerged in the reagent 56 to keep the mercury cool, but which of course opens well 70 above the level of the reagent. - The vessel 82 _is supported by having one side extended upwardly and secured to the top of the reservoir 58.; l A vertical tube 84 is sealed into the bottom of the vessel 82, and is arranged at its? upper' end with a full charge `of gas measured off. On the down stroke the valve` 94 closes the instant the pressure'in passage 16 rises to atmospheric prese sure, i. e. practically Iinstantly at the end of the stroke, and thev mercury 89 forces the measured charge of gas out through >the bottom of tube 6ft. Tube 84 exhausts the gas, past a'weighted- lever 98 forming in effect a one-way valve, into the esv lower end of~ an upwardly-inclined tube m9, shown as square in cross-section. rThe part of the lever 98 which normally closes the lower end oi the tube 84 is 1 provided with a relatively small opening which cooperates with the edge to break 7,0 the stream oi gas up into'a large number of small bubbles, to give a large surface acted on by the reagent. f ' - ’~ The gas passes up the ‘tube charged into-the lower end oi averti‘cal tube 102, 2,128,381 opening at its lower end in the reagent 56 and having its closed upper end well above the level of the reagent 56. |02 is shown square 3 ways filled to the same level, regardless of varia tions in the level of the reagent 56. 'I‘he lowering of the cup |44 unseals square tube |02 of course contain reagent, which acts to absorb the CO2, so that the gas passing into the tube |04 is the measured quantity of flue 10 gas, minus its CO2 content. pipe 6U and through any clearances that may ex ist where parts 52, 68, 28, and H0 pass through 10 the top of the reservoir. around the round tube |04. and allows it to dis 15 charge at the lower end of the tube |22. Thus the tube |09 and the tube |02 in eiTect form a tubular system immersed in the reagent and through Before the next charge of gas is emptied into the cup |44 is again lifted to seal |44 is always ñlled to the same level, any back pressure on the 15 bell |58 is always the same, and can be calibrated 20 20 25 30 above the reservoir. The position of the head |14 is thus dependent. at the end of each cycle when the residual gas is in the bell Hi8. on the proportion of CO2 to unabsorbed residual gases. 25 At this point in the cycle, cam lever 22 rocks the lever 30 to r ease (against the resistance of‘a 30 convenience of repair and In operation, the instrument follows a regular 35 in bell |08, as the case may be, to give the pen |22 the proper new setting. 4_1), v pen |22 cooperates with a chart |28 (Fiere ure 2) driven by a clock mechanism |30, and 40 to the face of the panel ||J. It will be noted from Figure 4 that rib 32 and appended claims. We claim: in the arm U8. As soon as the pin |22 takes up its new ‘oo sition. as described above, the further movement 45 1. An instrument comprising a source of sup ply- of gas, for a liquid reagent, a 50 ofthe cam arm 22 permits spring H5 to clamp the arm ||8 (and therefore the pen |22) in the new position until the next cycle. In order that variations'in the level of the re agent 5S may notI aiîect the positioning of the bell 55 60 a 60 65 After the pen |22 is clamped in its new position, further rotation of the shaft |6 rocks the arm 24 to lower the connecting rod 28. On the lower end through the bottom of the vessel and joined to said bottom by a mercury-tight joint, and a ver tically reciprocating head including a depending open-bottom gas container with its top` provided with means forming a telescoping joint with the 70 upper portion of said vertically-extending tube, said telescoping joint having a substantial clear and out of said container around said tube, said head having one 75 2,128,381 4 of mercury surrounding its base, together with a way gas-controlling valve means so that gas is drawn into the container past the valve means when the head is lifted to withdraw the container from the mercury and is forced by the mercury from the container down through said tube when the container is forced downwardly into the mer cury. ' cup-shaped member inverted over said tube with , 3. A gas analyzer comprising a reservoir con taining a liquid reagent, a stationary vessel open at its top and containing mercury and which is mainly submerged 1n the reagent to cool the mer cury but the open top of which is above the sur face of the reagent and which has a tube extend- 20 the lower edge of its wall dipping into the mer cury in said well. 5. Gas treating apparatus comprising a reser voir containing liquid, a liquid containing well in the reservoir, a gas-measuring bell dipping into the liquid in the well, sampling means for periodi cally discharging into said bell quantities of gas to 10 be measured, exhaust means for the gas having an inlet tube projecting upwardly into said bell and opening therein 'above the level of the liquid in the well and having an outlet tube with its end ing vertically through the mercury and through the bottom of the vessel and joined tol said bottom by a mercury-tight joint and which opens at its lower end in said reagent, a vertically reciprocat ing head including a depending open-bottom gas container with its top provided with means form ing a telescoping joint with the upper portion of said vertically-extending tube, said telescoping joint having a substantial clearance so- that gas may pass into and out of said container around said tube, said head having one-way gas-con trolling valve means so that gas is drawn into the container past the valve means when the head is lifted to withdraw the container from the mer cury and is forced by the mercury from the con tainer down through said tube when the container is forced downwardly into the mercury, anup wardly inclined guide submerged in and filled by the reagent and into the lower end of which the bottom of said tube opens, and a device receiving the treated gas from the upper end of said guide and determining a characteristic thereof. 4. A gas measuring device for use in an instru ment comprising a reciprocable head having de pending therefrom a gas intake tube and an open bottomed gas measuring container, and having a passage leading from the tube to the interior of 40 the container and which is provided with a one way valve controlling said passage, said valve in cluding an upwardly opening tube having a well facing downwardly above the level of the liquid 15 in the reservoir, a vertically reciprocated cup and means operated synchronously with the sampling means to lower the cup into the liquid in the reservoir to be filled thereby to a predetermined level and at the same time to leave said down wardly facing end of the outlet tube unobstructed while exhausting gas which has been measured and to be raised to seal said end in the liquid in the cup while supplying the said gas to be meas ured, said sealing liquid always rising to the same 25 level in said tube. . 6. Gas analyzing apparatus comprising a reser voir containinga reagent, an upwardly sloping tube immersed in and filled by said reagent, an upright tube connected to the upper end of the 30 sloping tube and having its lower end terminating below thereagent level and its upper end above the reagent level, sampling means to discharge a measured quantity of gas to be analyzed into said sloping tube adjacent the lower end thereof so 35 that gas rising through the sloping tube into the upper part of the upright tube causes circulation of reagent from the reservoir through the slop ing tube and back to the reservoir through the lower end of the upright tube and means con nected to the upper end of the upright tube to 40 measure the gas rising therethrough. ALBERT F. SPITZGLASS, GEORGE W. GRISDALE.