US2048193A - Dry cooling of coke - Google Patents

Description

July 21, 1936. A. MOETTELI DRY COOLING OF COKE Filed June 19, 1934 2 Sheets-Sheet 1 GAME q W Y ywmnm ww Fwri Patented July 21, 1936 PATENT OFFICE DRY COOLING OF COKE Arnold Moetteli, Winterthur, Switzerland, assignor to the firm Sulzer Freres, Socit Anonymc, Winterthur, Switzerland Application June 19, 1934, Serial No. 731,251 In Switzerland July 1, 1933 6 Claims. (Cl. 202-228) This-invention relates to the dry cooling of coke, and the removal of dust therefrom. According to this invention apparatus for dry cooling of coke has a, discharge chamber into or through which the cooled coke passes, and means for blowing a gas through the coke in the discharge chamber before its-discharge, to remove coke dust.

The gas, after leaving the discharge chamber, may be passed through a dust separating chamber to remove the coke dust from it.

"In a plant in which the coke is cooled by means of a current of gas flowing in a closed circuit through a heat exchanger, the same blower or other means employed to produce the cooling gas current may serve also to'produce the gas current through the discharge chamber. Two specific embodiments of the invention are shown diagrammatically by'way of example in the accompanying drawings,- in which Figure 1 is a sectional elevation of a coke cooling plant embodying the invention.

Fig. 2 is a view similar to Fig. 1 with the several 'valvesshown in positions which are different from those shown in Fig. 1;

Figs. 3 and 4, together with Fig. 2, show the valves and their actuating mechanism in various positions; and V Fig; 5 is a diagrammatic detail ,view showing the construction of the slide at the bottom of the coke cooling chamber.

For the purpose of cooling, the coke is received in a chamber a through which gas is blown in a closed circuit. The gas passes from the chamber a through a heat exchanger 17, such'as a steam generator," into a dust separating chamber c. From the separating chamber 0 the gas is drawn through a fan I, and delivered, as indicated by the dotted arrows, back into the cooling chamber.

The chamber is filled through an opening in the top, and after a charge of coke has been cooled it is withdrawn at the bottom by opening a slide d as shown in Figure 2. From the cooling chamber the coke passes into a discharge chamber 1 from which it can be discharged by means of a discharge valve e into trucks positioned below the plant. The discharge chamber is connected at one point by means of a pipe g and a valve h to the delivery pipe from the fan I. At another point on the opposite side of the outlet from the cooling chamber, the discharge chamber communicates through a pipe i and rotary valve is with the dust separating chamber.

' While the coke is being cooled, the valves h and k are locked in the positions shown in full lines in Fig. 2 so that the interior m of the discharge chamber is disconnected from the cooling gas circuit.

When the slide 12 is opened to discharge the coke, the valve is is opened and the valve it moved to the position in which it admits gas to the pipe g and the discharge chamber as shown in Fig. 1. The gas so admitted will pass through the discharge chamber and through the coke falling into it, and will free the latter of the coke dust still remaining in it and carry such dust through pipe 2 into the separating chamber where it will 15 ing the coke so that they will be automatically opened and closed by the latter.

In Figs.j2, 3, and 4 such means are shown in three various positions. n is a cam which can turn about the axis 0 and works in connection with a cam roller p and with a crank pin q. r is a lever, which is pivoted at the fixed point s and carries the cam roller p and is connected through the link t with the valve 71., and also through a link (not shown) in a similar manner with the valve is. u is a link connecting the crank pin q with the slide (1.

Inthe position shown in Fig. 2 the whole arrangement is set for the cooling operation, 1. e. thevalves h and k are set in such a manner that they close the passages g and z' and open" the pas sages provided for the cooling gas.

If the cam is turned in the direction of the arrow into the position shown in Fig. 3, the valve h, while the slide d remains closed, is moved in such a way that it opens the passage g and closes the cooling gas pipe leading to the cooling chamber, and the valve is is opened, so that the cooling gases delivered by the blower I pass through the coke-discharge space m instead of through the cooling chamber. If the cam is then turned further into the position shown in Fig. 4, the slide d is opened, whilst the positions of valves h, and k remain unaltered, and the cooling gases are, as described above, led through the coke falling into the discharge space, so that the coke is completely freed of dust when it leaves the plant.

If the cam is then turned further in the direction of the arrow until it comes back into the position shown in Fig. 2, the slide at is first of all closed again and then the valves h and It are turned back into their original positions, 1. e. the coke-discharge space m is shut off from the cooling-gas circuit and the cooling gases are again led in the usual way throughjtheco olihg chamber; Such means maybe adjustedii desired so that the valves it and k are only partially opened and closed.

I claim:

1. In an apparatus for the dry cooling of c ke,'

a coke cooling chamber containing a mass of coke to be. cooled, a heat-exchanger"associatedr" therewith, means for circulating gas inblosed circuit between said coke cooling; chairmen-and; 1 said heat exchanger to effect the cooling of :said coke, a chamber associated with said colgecooling chamber adapted to receive cooled coke therefrom; a gate for. controlling the passage of cokef-rom the coke cooling chamber to said second chamber, means for so operatingthe gate as to regulate "the discharge of the. coke from said cooling chamber to said second chamber and'to; cause the coke to fall into said second chamber in dispersed formation, andmeansfor diverting gas irom. said coke. cooling circuit and causingthe same" to flow transverselythrough said falling coke to remove dustparticles directly therefrom; V 2; In an apparatus for the dry cooling of cokecomprising a'coke cooling chamber, a heat I exchange]: and a dust separating. device arranged in; cl'cse'dl circuit and provided with means for circulating gas'therein, the combination of acoke discharge chamber into which the." cooled coke from the coke cooling chamber is ad'apted to flow by gravity, alconnectionvfor removing gasQfrom said closed circuit on its way to' the'coke cooling chamber andfp'assing the same throu hthestream of coke entering said discharge chamben andra second connection for conveying dust-laden gas from said discharge chamber to said dust sep, arating device.

' 3. In an apparatus for the dry coolingof sion valve for controlling the admission of gas to said discharge chamber, a valve for controlling the fiow of the dust-laden gas from said discharge chamber, and means for coordinating the operation of said valves with respect to the opening and closing of said gate.

4. In apparatus for the dry-cooling of coke,

' a-cokecoolingflcliamber having" an outlet at the lowerendthereof; a gate for said outlet, a

passage for conducting cooling gas into said f chamber, a valve controlling the passage of gas through-sa id passage, a discharge chamber positioned beneath said cooling chamber for receiv "ing'cole"therefromjmeans for operating the gate tor the outlet of the cooling chamber to permit coke in said chamber tofall freely into said discharge chambenmeans for forcing gas through saidpassage' and transversely through the falling coke toflb pw dust particles directly therefrom, a passage for conducting a gas into said dish eei a e r nd-mean to co r ati the e ienwo-e -lsa ar w th" respect to t e pe ing, and.closing oft said closure; I I r 5.111 apparatus ior ,,the dry-cooling of; coke;

a; coke coolingrchamber havingian outlet at. the" lower end thereofga gate forsaid outlet, a passage for conducting cooling gas into said chamber, a discharge chamber positioned beneath saidn cooling chamber; for receiving coke therefrom,-= mean s toroperating the gate iorthe outlet of the cooling;chamber'to permitcoke in said chamber to fall. freely into said-discharge chambfel r rzpassage fon conducting a gas into; said olischarge chamber, means for forcing gas'through i said passage and transversely through the falling coketo blow. dustparticles directly therefrom, a

valve controllingthepassage of gas through said passa egand means for coordinating the operation voi saidvalvel with respect to, the opening and closing of said; closure, so that said valveis openedvbeforethe closure has movedto its: fully M d isclosed after the closure open position, closed, l v-- 6 apparatus: for. the dry-cooling .of coke, a'coke cooling chamberhavingan outlet' at the lowen endthereoi ag gateior saidvoutlet, a discharge. chamber positioned beneath said :cooling chamber for receiving coke therefrom, means for soioperating the gate ior the: outlet of the coke cooling; chamber aste regulate the discharge of the coke from said cooling chamber to said discharge chamber, and to cause the coke to fallinto said discharge: chamber, in dispersed. formation, and means. forv forcing arcurrentbf gastransv ythroughthecoke as -it falls into said dis-' chargmg chamber to blow dust particles directly I fromthe fall-ing-coke.w V I c- ARNOLD MOETYI'ELI.

CERTIFICATE OF CORRECTION.

Patent No. 2,048,195. July 21, 1956.

ARNOLD MOETTELI.

- It is hereby certified that error appears in the printed specification of the above numbered patent requiring correction as follows: Page 2, second column, lines 1'? to 19 inclusive, claim 4, strike out the words and comma "means for forcing gas through said passage and. transversely through the falling cake to blow dust particles directly therefrom, and insert the same after the comma and before "and" in line 21 same claim; and. that the said. Letters Paterit should be read with this correction therein that the same may conform to the record of the case in the Patent Office.

Signed and sealed this 15th day of September, A. D. 1956.

Henry Van Arsdale (Seal) Acting, Commissioner of Patents.

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