US973626A - Gas-washing machine. - Google Patents

Description

W/H. CARRIER.

GAS WASHING MAOHINE.

APPLICATION FILED DEC. 7, 1907 973,626. Patented Oct. 25, 1910;

3 SHEETS-SHEET 1.

Win/@6566.- I 17/062055)? W; CARRIER. GAS WASHING MACHINE.

APPLIOAJTIQVNZI'ILED DEG. 7, 1907.

Patented Oct. 25, 1910.

3 SHEETS-BHEET 2.

Wfiwsses:

iaz/M.

W. H. GARRIHR'. GAS WASHING MACHINE. APPLIUATION FILED DEC. 1, 1907. I

Patented Oct. 25, 1910.

E4 4. v I v 3 SHEBTS8HEET 3.

fiik/je sse: v 32 W "WILLIS it. panning, or scream, iaiintflrdangiissfiisrtin- IAHY,,..0F BUFFALO, new YQQI'Q.

oss-wasfimo macnntit To o'll whom it may concern:

Be it known that I, VVILnIs H. CARRIER, a citizen of the United States,.residing at Buffalo, in the/county of Erie and State of' NewYorln'ha-ve invented a new and useful Improvement in Gas- Washing Machines, of which the following is a specification.

l?his invention relates to machines for washing or cleaning producer, blast furnace and other manufactured gases to remove the tar, dust and other impurities therefrom, and more mrticularb to gas washing niachines of that sort coinprisil-ig a stationary casing and fans'or impellers which arerapidly rotated therein to cause the rotation of the gas and separate the impurities therefrom hr centrifugal action.

The ob ects of the invention are to pro duce a combined centrifugal gas Washer or purifier and blower which will thoroughly cleanse the gas of-all tar and other impurities and at the same time create a sufficient difference of 'n essure between the gas entering and leaving the machine to'twercoii'ie the resistance of the piping of the producer system as well as the back pressure in the gas holder or delivery piping to the engines or other consumers; also to construct the machine so that the tar and other llliPtllltlesi-will be extracted from the gas through the-combined and-successive action of inrpact of the. gas against wetted surfaces and centrifugal action through the rotation of the'gas; alsotheprorision of means for preventing tlie"leal-:agie and discharge ofimpure or partially cleansedgas Without n'eces- I sit ating closely fitted-and machined joints between the rotary and stationary parts. of

the machine; also'toconstruct the-machine sothat it willb eself-cleansing and will not become clogged or fouled by. the condensed tar and other ixnpi'i'rities extracted from. the gas; also td'PIQYlClt-i the machine with auto ina'tic means for maintaining a constant gas pressure in the delivery-mains regardless of the variations iii-"pressure in the producer systemiandhinfl the amount, of gasconsumed;

and t'oj provide-means for preventing the condensation of -the tar vapor in. the gas after leavihgth'e purifier.

In the-accompanying drawings, consisting of-three sheets Fig'.u.re lis alongitudinal sectionalelevation o'fe gas washing and purify-- ing machine .ernbodying'the invention. Fig.

2 1s a transverse sectional elevation thereof,

Specification of Letters Patent. i I Application filed December 7, 1907; Serial No. 405,514.

second and third'Q-imp'e'llrs B *B are more neeted garound their-central openings .50 4 .,that the spaces between the blades of-these' impellers-[form continuous or uninterrupted the periphery of one to the periphery tlieother. The three impellers.arecihus conemanates-11910.

.in line 22, Fig. 1. '3 isa' fiagmcm tarysectional plan therdfi in. line. H;J=Eig.' 2. Fig.- 4is a transverse sectionalelevation thereof, in line 4-4:, 1, butsnowi g the machine rov'ided Wit me s i oui-ms n lating the discharge pressure; FigQ-fi a fragmentary section; showingrrmodifi ed" construction of the baflle plates. "I

Like letters of referencereferto in the several figures. A represents; a shell or casing itone end with acent-ralgas intake tion a which is coupled-to asupply from the gas producer or other sourcerof supply, and at the opposite-end .with a gential; discharge connection a-' which-=,is' coupled to a deliverymain, Theisllelliluisa transverse partition a -,dii[iding it into lerstor fans which are secured on s, drive shaft C journaled insuitable "anon the end-of the shell, 0r=thecan-be mounted in-any other suiti1b le a y to rotate together in the shell or In the construction shown, the-first and second impellers B B? are composed oin ment-ral circular .disk I) having'a hub on the. drive shaft, annular.side disks b' jt opposite sides thereof, and numerous blades b; (seeFig; 2) arrangedbetweemg'gd connecting the central and. side-disks. The central holes in the. Side dis'ks form tively intake and discharge openings for first 'andseeond impellers B andfB. third impeller 13*, 'shown,' -consists-"ofitwo,

annular side disks b and radial blades rbi (see Fig. 4) which connect, said side disks and a. portion of Which-are connected, by spokes to a hub 'b 'secured.on.31.thedrire shaft 0. The adjacent. siderdisks of tilt gas passages through ,said impellers; innit tie --'can be properly. considered. as parts or sections of'-'a singlc compound impeller, but for the sake of clearness they will be hereinafter referred to as though they were separate or distinctparts. The impellers could ,be. constructed in any other suitable way. The disk I) separating the first and second impellers B B extends beyond the outer ends of their blades and side disks to divide the surrounding space in the shell into the'two annular chambers A A before and extend comparatively close to the peof rotation ofthe gasin nozzles areproduce a hollow cone-like mentioned. The first and third impellers are of somewhat larger diameter than the middlegone, to produce the proper movement 'ofthe "gas through the machine and create'a' pressure" in the last annular chamber A which shall be equal to or slightly greater,- than the pressure in the second chamber A I D represents a-circular spray head which is'located in the'intake connection a of the shell'andwhich may be of any suitable constructionadapted to thoroughly wet the gas entering the" machine.

E represents bafiie' plates inand crossing the .fi'r'st annular chamber A, or impact chamber, of the shellaround the first impellerT'BfQ These bafiies are preferably secured to the adjacent. end wall of the shell riphery of the first impeller B, and have lateral extensions projecting bet-ween the outer edge-of thecent ral disk '6 of the first and second impellers and the circular wall of the shell, but they do not join'the circular wallof the shell, so that spaces are left. between their outer edges and said circular wallj'of the shell through which water can circulate in the impact chamber. These baflle "plates can befarranged' radially, as shown in Fig.2, or curved, as shown at E in Fig. 5, to provide conc'aved faces for the gas to impinge. against.

- F represents'sp'ray or atomizer nozzles arranged the second annular chamber, or spray chamber A periphery of the second impeller B Thesepreferably of that sort which film of water and are -arrangedglsee ,Fig. 2) to discharge the .water in a direction opposite to the direction produced by the" impellers. The spray nozzles can connect with'an annular water passage fin the end wall of the shell, as'shown,

where'it is'thoroug ly and umformly-wetted of-the she'll around the the spray chamber rounding chamber construction is such as to prevent any by the water from the spray head D, into the central intake of the first impeller 13'.

This first impeller sets the wet gas in rapid rotation. and the heavier particles of tar and other ii'npurities and moisture which are thrown out into the impact chamber A by centrifugal force violently impinge against the bafiic' plates E in said chamber. The effect of this action is twofold. First, the plates are thoroughly wcttcd and the inipact-of the water against the plates at such high velocity fills the chamber completely with an exceedingly line mist, thereby bringing the gas and water into most intimate contact and. thus effecting the condensation of the tar vapors. Second, the tar and other impurities striking against the wetted sur-. faces are entrained with the water. and separated from the gas. From the impactchamber A the gas passes into the spray chamber A where it is again set in rotation through the action'of the second rotating impeller B The gas in rotating in this chamber and the impact chamber A throws outward all particles of water, condensed tar and impurities. The cone-shaped filmsof spray produced by the nozzles F in this chamber further increase the separation. As the gas moves in a direction opposite to'the dis-.

charge of the sprays, it tends to spread or flatten out the conical water films so that they fill the entire cross section of the chamher, and all portions of the gas must im pinge upon these water films, which results 111 a very thorough cleansing action. The water separated from thegas in the impact chamber and that fromthe spray in the spray chamber also serves to flush out these chan'ibers. and as the water can circulate through the spaces between the outer edges of the bafiies E and the circular wall of the impact chamber both chambers are kept free from tar deposits. The water with the entrained tar and dirt is drained from these chambers through the pipe G. From the spray chamber A the gas is forced to'pass inwardly through the second impeller B which further separates the gas from ,the heavier particles of water and impurities, by centrifugal action and'dries the gas. As before stated, the connected hollow impellers B 15" form continuous 'or uninterrupted passages for,t.he gas which are closed exce )t at the peripheries of theim'pellers, andt e diameter of the last impeller B being some-.

what greater than t-hat of the secondi'mpeller B insures a pressure in the sur- A which shall be as reater than the pressure The effect of this of the imperfectly cleaned and dried gas from great 'or slightly in the spray cham r A.

leaking or escaping from the spray chamber outside of the impellers into the pressure chamber A Owing'to the slight difierence Solid am s-m ih 1-)resshre 'het\veen these chambers, there w ll she a slight leakage of the purifiedgas from tlie chamber A into the chamber A it w- -aromid' the outside.-\vall:s-f; the iimaellers 5. small pressures, and any leakagein the opposite 'direction will "be prevented. It is not necestherefore-to have machined surfaces to but this leakage :Wl-ll be negligibly .10 .pro nee esmall clearances between the impellets hell. required in machines using open 1mpellers,.and this results in a .Oflpower.-- The'iact that the tflmpelllle r-B" isoflarger diameter than athe $EeQnd' =one-also assists in the nrodnction of pressure, the combined e feetof the described'constrnct-ion is such as to give the fferencein pressure between the "j-gaseiitering and leaving the machine to '20; positively more the gasto the gas holder or consumer I In; fig". 4,,themach'1n'e is shown provided .with means-for maintaining a substantially constantlg-as pressure at the discharge end of the machine. -These means comprise a .-e'1 iceeds thegdesiredmaximum the gasometer bell Will-rise and-close thedamperH more or le ss, ;thereby decreasing. the pressure produced byv the machine, andthe decreasing pressure will allow 7 the gasonieter bell .to

40 again-descend .andopenthe damper. A

damper actuated by other suitable pressurefoperated; hanism-conld be employed.

m' h nei constrncted as described will condensed tar with the other ties from the gas, but Will-not eliminate the tar-which is in the .form of a perfc va por. ongas, and it is found. that such-;-'-tar -vaporwill condense. after leaving the purifier;andzcanseftronble in cases where n the as. isiusd' -'d1reotly. in. the gas engine.

Such condensation-with the consequent deposition.- of: the. tar .in the engine can be preventedby- -superheating the gas on leaving';the purifienasilfliciently to raise the tem- 5 peratnre. of; thfliai? Vapor. above its dew pointi- To a eco' n'lyh -this -in the machine shown theendfwa I -at. the dischargeend of the machine andi the discharge spout or connection. are made: hollow or facketed, as inlQ-dioatedfat L 1 respectively, and provided f with-finlefi and-{:outlet- .ipipes for circulating th engi le' r-eishanst or other suitablefheat ing -medi'umj throughf these jackets, tem nature-of the gas leaving the machine left its; raised lsnfiieie itly;.toosuperliat th-e jOXVlIIg tO thesli ght differencesin the forth,

3 central intake opening at one. end and a dis- The a tar vapor and prevent the condensation thereof. but the heatis localized at the discharge end. of the nniclrinc and does"not prevent the condensation.and separation of the far from the gas" in the impact" and spray chambers A and A? The gas could be thus supcrheatethas it lea vcs the purifier or before it can be chilled sutlicic-ntly to condense the tar vapor, by any other suitable means.

I claim as my inyention l. The ctm'ibination of a shell having a central intake opening at one end and a dis charge opening at the opposite end, a rotary impeller in said shell adjacent to said in take .o ening and l'iaving a central intake and a peripheral discharge for the a second rotary impeller having a peripheral intake and a central discharge for the gas, baflies arranged in said. shell around said. first impeller against "which the gas inrpinges. the annular space in said shell aroundsaid second impeller being unobstructed, and means for discharging waterinto the annular space in said shell around said second iinpl-dlcr. substantially as set 2. The combination of a shell having a charge opening.- a rotary impeller in said shell adjacent to said intake opening and having 'a' central intake and a peripheral discharge for the gas, a second rotary 'impeller having a peripheral intake'and a'ccntral discharge for the gas, battles arranged in said shell around said first impeller against which the gas impinges. the annular space in said shell around said second impeller being unobstructed, means for discharging waterinto the annular space in said shell around said second impeller, and a third rotary impeller having a central intake connecting with the discharge of-said second impeller and a peripheral discharge, substantially as set forth. The combination ina gaswashing machine, of a circular shell-,a rotary impeller in said shell for causing the gas t'o-rotate in the shell, and spray nozzles which. are arranged to discharge the Water into said. shell around said impeller in a direction opposite opposite tot-he direction of-rotation of the gas, substantially as set forth.- '5. The combination of a shell; having .a.-

central intake opening at onegendand a i'scharge opening at-jthe opposite end, a rotary &

impeller in said shell adjacent to said inlet opening and having a central intake and a peripheral discharge for the gas, a second rotary impeller having a peripheral intake and a central discharge, a plate projecting outwardly from the peripheries of said impellers and dividing the surrounding annular space in the shell int-o two chambers which communicate over the edge of said projecting plate, baflles in one of'said chambers, means for spraying water into the other of said chambers, and a third impeller which receives the gas centrally from said second impeller and discharges it periph-T erally, substantially as set forth.

6. The combination in a gas washing machine, of a shell having two annular peripheral chambers therein, two. hollow rotary impellers in said shell communicating at their peripheries with said annular chambers and connecting centrally to form u'ninterrupted gas passages through said im- .pellers from one chamber to the other, one

of said impellers being of larger diameter than the other, whereby the gas enters at the periphery of the smaller impeller and is discharged at the periphery of the larger impeller and a greater pressure is produced in the annular chamber surrounding said larger impeller, substantially as set fortln 7. The combination in a gas washing ma- 'chine,'of a rotary impeller having a central intake and a peripheral discharge for the gas, a second rotary impeller having a peripheral intake and a central discharge for the gas, and a third rotary impeller having a central intake connecting with the dis charge of said second impeller and a pe ripheral discharge, said first and third impellers being of larger diameter than said second impeller, and a shell surrounding said impellers and having an intake openstantially as set forth.

8. The combination in a gas washing ma chine, of a shell having gas intake and discharge openings, rotary impellers in said shell, a damper controlling said discharge opening, means operated by the pressure of the discharging gas, and connections between said means and said damper for controlling the position thereof in accordance with the gas pressure, substantially as set forth. I

9. In a gas purifying machine, the combination of a casing, and means located in said casing for purifyin the gas, means for keeping the gas'cool while being purified, a part of said casing through which the gas discharges after being purified having a jacketed wall for a heating medium whereby the discharging gas is heated to prevent condensation of-the tar vapor, the heating medium being confined to the vicinity of the discharge opening, substantially as set'fort-h. Witness my hand, this 4th day of December, 1907. WILLIS H. CARRIER.

Witnesses:

WM. L. Fox,

ELvANs K. NEWTON.

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