US1149039A - Extracting apparatus. - Google Patents

Description

1( s, FORETICH I E. L. @Hoon/Is.

yI-IXTRACTINGAPPARATUS.

APPLICATION FILED JUYLY 5v, 1912.

its ceptacle 6 to receive the turpentine, solventl JOSEPH S. 'Foa'ETIoH AND ELIAS L. GRooiyis, or GULFPORT, MISSISSIPPI.

l.'sxriaacrine APPARATUS.

To all 'whom it may concern Be it knownthat we, JOSEPH S. FoRETroH and ELIAS L. GRooMs, citizens of the United` States, residing at Gulfport, inthe county of Harrison and State of Mississippi, have invented new and useful Improvements 1n y. Extracting Apparatus, of which the following is a specification.

This invention relates to an extractingappai'atus, more especially ,designed for extracting turpentine and other essential oils and rosin from wood, but adapted also for ratus for rapidly and economically extracting substances of the character named, and

which is adapted for the use of a solvent in, connection with heat in the extracting operation and to enable the solvent to be recovered for repeated use. v i.

The invention consists of. the'features of,

construction, combination and arrangement of parts hereinafter fully described and claimed, reference 'being had'to the accom- .panying drawings', in which- Figure 1 is a diagrammatic side elevation, with parts in Section, of an extracting apparatus constructed in accordance with our invention. 'F ig. 2 is a top plan view of the same. Fig. 3 is a vertical longitudinal section through the extractor or retort on an enlarged scale. Fig. 4 is a vertical transverse section of the same. Fi'g. 5 is an end velevation of the extractor or retort showing the adjacent hinged door in open position,

the solvent spray coil and coacting screen' appearing in transverse section.

In carrying our invention into practice,

.we provide 'an extractor or retort comprising a substantially cylindrical casing 1 normally open at its opposite ends and adapted to be hermetically closed by hinged doors 2 and 37 which are mounted to swing in a horizontal plane to .open and closed posi'- tions and to abut when closed against suit- ',able packing 4t at the ends of the casing. The bottom of the casing preferably' slopes to a cei'taindegree toward its outletend and is provided at such point with an opening below which is arranged a chamber 5 for the `collection of the rosin and other heavier volatile constituents .of the Wood.

Y At the top of the casing is a dome or re- The shaft is hollow and provided with lat- Speciication of Letters Patent. application flied iuiy', 1912. seriai No. 707,311.

'rosiri and other solid Patented Aug. 3, i915.

Dis-

14 acting as a retarder to the discharge of the vapors, and alsov disposed in the top of the casing above the screen is a perforated spray pipe or coil 15 for supplying a suitablesolvent to the material under treatment, which solvent is sprayed lfrom the pipe and through thescreen and is thus properly distributed to all portions of the casing.n Said ,coil or pipe 15 is supplied with Solvent through -a pipe 1,6 leading from' an elevated solvent reservoir 17, Whieh'pipe 16 is provided With a controlling valve 18.

' Arranged within the bottom of the Acasing is a steam heatingpipe or coil19, which is supplied with steam throughpipes 20, 21 land 22 havingcontrolling valves 23, 24` and 25 from a main steam supply pipe 26 leading from afboiler or other suitable steam generator 27. A similar heating pipe or coil 28 is arranged in the bottom of the collection chamber 5 and communicates with the pipe 26 throughI a pipe-29 having a controlling valve 30. The casing 1 is provided with a liquid gage S1-for indicating the level of the solvent therein, while-the collection chamber 5 is provided with a pyrometer 32 whereby the internal temperature may at any time be determined. It will thus be understood that the casing and collection chamber may be heated to any desired temperature to vdrive 0H the volatile constituents of the wood and vaporize thefsolvent and also to keep the constituents in a liqueiied state.`

The casing is provided at opposite sides `eral discharge apertures for the intr-oclosed' by swing` bolts 42 on the casing adapted for engagement with notches 43 in said doors, and the door 3 is provided with a bearing 44 for a hollow drive shaft 45 which extends therethrough. The inner end of this shaft 45is provided with a clutch or coupling member 46 adapted to engage a coacting clutch or coupling member 47 on the adjacent end of the shaft 38, whichy clutch members are adapted to be automatically coupled and Vuncoupled by the closing and opening movements of the door 3, whereby the drum may be connected with and disconnected from the drive shaft. rThe drive shaft may be driv'en in *any suitable manner, as by means cfa sprocket wheel 48 n connected by a chain 49 with a sprocket .wheel 5G on .a main driving shaft 51 receiving motion from any suitable source of power. The outer end of the drive shaft is provided with a coupling 52 for connection with a pipe or tube leading fromany suit able source of supply ofthe solvent agent to be used, and the engaging surfaces/of the clutch members 46 and 47 are provided in ,practice with suitable packing to form a tight joint for the flow of out leakage.

lin practice at least two carriages providedL with rotary drums of the character described are employed, one of which will be the, solvent witharranged within the extractorl casing for the treatment of its charge while the other Ais being filled with a charge for subsequent treatment. rlhe carriages are entered into the retort through the doorway 2 from a' track 53 having a hinged section 54 which may be thrown back to permit the door to be opened and closed. it this point the drum may be rfilled with the wood or material from an elevated hopper 55 supplied with material by a conveyer or elevatorl 56. After the material has been treated within the-extractor, the door 3 isopened and the carriage run out upon a track 57 having a v` hinged section 58 which may be swung back to permit said door to be opened and closed. The refuse material may then be discharged from the drum through the outlet controlled by the door 37 into a pin 59, or the carriage may be run into a bleaching and drying device similar in general construction to the casing l, where the material` may be niaaoea bleached and dried an prepared for use as .wood pulp forthe manufacture of paper or for other purposes.

rihe rosin and other heavier volatile constituents of the wood collected inthe chamber 5 pass outward through a discharge pipe 60 to a reiiner (not shown) and thence to a still 61, the heating coil 62 of which is connected with the pipe 26 by a pipe 63 having a controlling valve 64;` in this still the liner or lighter volatile constituents remaining with the rosin and other heavier products are vaporized and pass through a pipe 65 into a tertiary condenser 66. The .pipe 60 is inclosed by a steam `jacket 67 which may receive the waste steam from the coil 28 or be4 supplied with steam from the pipe 26 by means of a pipe 68 having a controlling valve Y69, whereby the resin and solid products may be kept heated and prevented from hardening and clogging the pipes while the extractor is in operation or shut down for repairs, so that such products may be treatved and removed at any time. rlChe still 61 is provided with a. discharge faucet 7 0 'for the discharge of the resin into a suitable receptacle 7l and a drain pipe 72 having a controlling valve 73 connects with the acket 67 for the discharge of the water of condensation therefrom. A pipe 74 having a controlling valve 7 communicates with thecollectionchamber 5 so that hot Water may be admittted intol said chamberto support the body of resin and preventthe samefrom. being discolored bylthe lheat from the coil 28 and jacket 67,

Vlhe condensers 9, l0 and 66are-respectively provided with draw/oft 'valves 769 77 and 78 and communicate'.respectively ywith separators 7 9, 80 and; 8l in which the volatile products or spirits are separatedA from the solvent or moisture. rlhe separator 79 communicates through. a pipe 82 having a controlling valve 83 with a solvent recovery tank 84 connected by a pipe 85l having a controlling valve 86 with thel storage tank 17. A pump 87 is arranged in the pipe 85 and may be'driven by hand or steam power for elevating the solvent from the tank 84 to the reservoir 17 for repeated use. Pipes 88 and 89 havi-ng'controlling valves 90 and 91 connect the separators and 8l with-tanks 82 and 83 in which the spirits or volatile products are conducted for subsequent use. -pump 92, supplied with steam through a pipe 93 from the boiler is connected with the condensers through a conducting pipe 94 and branch pipes95, 96 and 97 having coni trollingvalves 98'therein, for supplying or 1 circulating the cooling water.

ln operation, the carriage supporting the drum containing the charge of wood to be treated is run into the casing l and the doors 2 and 3 closed, after which steam is admitted through the pipe 20 to the ,coil 19 and through the hollowshaft 38 to the drum 36 and the drum slowly revolved, whereby the steam is caused to freely yand quickly enetrate the body of material and drive o the spirits or vapors. As soon as the casing has been heated to the required extent to liberate the spirits, the .valve 11 is opened together with the valve 12 for the flow of the vapors to the condenser 9 and separatori-80, in which the vapors are condensed and the spirits separated from the water of condensation and finally discharged into the receptacle 82. After all the spirits 'an'd'rosin which can be removed by the steam heat from the wood are driven off, the valves '23, 11 and 12 are closed and valve 18 opened and the hydrocarbon or other cold solvent admitted through the spray pipe 15 and hollow shaft until the extractor casing is about one-third full, when the valve 18 is closed, whereby-in the continued Arotation of the drum the solvent will be taken up and washed through the wood, thus extracting the remainder of the spirits and the rosin. The valves 13 and 25 are then'opened, by which steam is supplied to the coil 19 to heat the extractor and vaporize the solvent, which passes with the extracted spirits out through the pipe 8 into the condenser 10, where the volatile .constituents are condensed and pass into the separator 83, from which the solvent is dischargedinto the tank 84 and the spirits withdrawn from the separator and stored in one of the tanks 82 or 83. During this stage or process of vaporizing the solvent the drum is rotated at high speed, whereby through the centrifugal action set up all of the liquids and rosins will be deposited upon the walls of the casing, leaving the wood thoroughly dry and free from4 all of the solvent and extracted substances, the rosin discharging into the collecting chamber 5 as previously explained. The door 3 is then opened and the carriage run out for the subsequent bleaching and drying treatment of the refuse wood for the purpose described or for its discharge into the bin 59 for any other intended use, after which another filled drum is run into the casing and the extractin operation above` described repeated. Whi e the solvent is being evaporated the hot water is admitted into the chamber 5 through the pipe 74, when the rosin is drawn off, separated from the water and refined and finally separated from the spirits contained therein in the still 61, the spirits passing through the pipe 65 into the condenser 66, while the rosin is drawn olf thr1ough the faucet 70 into a suitable receptac e.

It will be seen from the foregoing description that our `linvention provides for the treatment of 'the wood by heat and a solvent in such manner as to insure the rapid and economical extraction of the rosin and all the volatile constituents, the 4thorough separation of the rosin and constituents 1n a highly ,pure state and the recovery of the duce time and labor as well as to prevent dis-v coloration of any of the products from excessive heat, the advantages of which will be apparent. Furthermore by the described mode of treating the rosin and other heavier I products, it will be seen that these substances may be kept in a liquid state for an indefinite period and prevented from becoming chilled and clogging the apparatus, as'at such times when its immediate removal is not convenient and it is desired or found necessary to shut down the extractor for cleaning or repairs.

, l/Ve claim 1; An extractor comprising a cylindrical casing, doors for closing the ends of said casing, horizontal track rails in the casing, a carriage adapted to travel on said track rails, a shaftsupported by the carriage and havingv passages for the iiow of a solvent therethrough, a drum carried by and in communication with the shaft, a driving shaft journaled on one of the doors and adapted to be connectedfwith said hollow shaft, means for heating the casing, and means for collecting and separating the products.

2. An extractor of the character described comprising an outer vessel having a vapor outlet at its top and a rosin outlet at its-bottom, a perforated rotary receptacle disposed longitudinally within and spaced at all sides from said outer vessel, a perforated pipe or tube extending longitudinally within the vessel for the injection of an extracting agent throughout the mass of the material contained therein, said pipe or tube forming the supporting axis on which the perforated receptacle rotates, means for heating the interior of the outer vessel, and means for rotating said receptacle.

3. An extractor of the character described comprising an outer vessel, a door for closing the same, means for heating said outer `vessel, track rails within the outer vessel, a carriage arranged to travel said track rails, a perforated pipe supported by the carriage, a perforated receptacle mounted to rotate upon said perforated pipe as an axis, a drive shaft supported by the door, and means for connecting said shaft with the perforated pipe when the door is closed.

4. An extractor of the character described including a carriage, a perforated pipe or axle supported by said carriage, a perforated drum or receptacle carried by said pipe and through which the latter extends and a; guard screen inclosing said hin saidy receptacle. l ,extractorzof the character described y'Cornprisingian outeryessel having a vapor `outlet' at lits top and a rosin outlet at ,its bottonn a heating coil disposed within the [bottom ofsaid Vessel, aperforated solvent #injecting tube arranged within the vtop of A said Vessel, a guard screen disposed beneath Liedes@ means for supplying Water to the chamber I to be heated to float the body of rosin therein. f

7. An extractor including an extracting Vessel provided with a-vapor outlet at its top and a rosin outlet at its bottom, a heating coil Within said vessel, a heating coil within the rosin outlet, a still, a pipe leading 'from' the rosin outlet to said still, a jacket surrounding'said pipe, means for supplying Water to the rosinoutlet to be heated to float the body of rosin therein, a

steam supply pipe, and Valved connections.

between said steam `supply pipe and the heating coils and jacket.

In testimony whereof We affix our signatures in presence of two witnesses.'

JOSEPH S. FORETICH.

ELIAS L. GROOMS. Witnesses:

` C. J. CHRISTIANSEN, p

FRANK J. GOUGH.

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