US1935183A - Apparatus for distilling dry cleaners' solvent - Google Patents
Apparatus for distilling dry cleaners' solvent Download PDFInfo
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- US1935183A US1935183A US330009A US33000929A US1935183A US 1935183 A US1935183 A US 1935183A US 330009 A US330009 A US 330009A US 33000929 A US33000929 A US 33000929A US 1935183 A US1935183 A US 1935183A
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F43/00—Dry-cleaning apparatus or methods using volatile solvents
- D06F43/08—Associated apparatus for handling and recovering the solvents
- D06F43/081—Reclaiming or recovering the solvent from a mixture of solvent and contaminants, e.g. by distilling
Definitions
- the object of my invention is to provide a stillfor the distillation of dry cleaners solvent, gaso- My invention comprises a still responding to.
- Y Fig'. l is a general elevation of the apparatus, vpartly inA section. o
- Figs. 2 and 3A are, ⁇ respectively, a sectional plan View and elevationof the evaporator.
- the machine comprises a solvent cooling chamber c, a solvent evaporatingchamber b nl'ountedV v on the'cooling chamber, a heat exchanging 'cham'- ber a mounted on the evaporating chamber, and coils and pipe connections as hereinafter described.
- the solvent a pipe d into and through a coil of pipe e in the chambera, wherein the solvent isv preliminarily, heated by 'heat ,exchange with solvent vapors as hereinafter described.
- the heated liquid solvent thence 'flows through a pipe f, ⁇ in which is interposed a feed lregulator g, into the evaporating chamber b.
- In chamber. b are a coil or coils of pipe h' through which circulates'steam, which evaporates the solvent, leaving a residue containing impurities and which, ⁇ from time to time, may be withdrawn through drain i. l
- the .solvent vapor rises and enters chamber a, wherein it transfers much of its heat to the inflowingsolvent in coil e, the vaporbeing largely condensed and flowingdown, through a piped', into the cooling chamber c. 'y
- Extending through pipe y is a tubelc (preferably composed of 'asbestos covered with sheetmetal), the upper part of which is expanded to form a .funnel-shaped upper end m extending outside the coil e near the Wall of chamber a, leaving an annular space between it and the wall for the' yupiiow v1of vsolvent vapor. If the Vfunnel were liquid to be distilled cows through j l 'solvent vapor that may be entrained therewith,
- Vtube it andfunnel m are made of non-heat conducting material in order that the solvent should not be reheated inthe course of its downiiow through funnel m and tubec,
- In chamber c are a c'oilv or coils o fv pipe n through which circulates cold ⁇ water,whe'reby the remaining vapor flowing from heat exchanger a ,is condensed and the condensate is cooled.
- the lcooled solvent is pumped out through pipe o and thence through pipe p; the pump, not shown, being positioned on pipe p or an extension thereof.
- ' rt is preferred to make coils h inthe solvent evaporating' chamber, asshown in Figs. 2 and 3, namely, of tubing which is relatively Wide and thin in cross-section and which is wound'upon itself spirally; there beins7 preferably a number of coils arranged in multiple and'connected, at top andfbottom, withmanifolds randy;
- the coils n in the solvent cooling chamber may be of any conventional type.
- Y In the evaporating operation, 'a small amount of permanent gas maybe 'driven off which, without some provision rto prevent it, would accumulate in the top' of chamber a and ultimately pre- 85 vent the successful operation of the still.
- the heat exchanger is, in eiiect, the upper part of the evaporator chamber.
- Means are provided for accumulating the condensed vapors which are condensed by the heat exchanging coils and for conveying said condensed vapors, by gravity, with the uncondensed vapors, to the condenser.
- the top of the heat exchange chamber is connected by a pipe with the bottom of the condenser chamber to equalize pressure, the pipe having a loop below the liquid level of the condenser to form a liquid seal.
- the suction line to the pump is taken oli of this pressure equalizing line at the level of the condensed liquid in the condenser.
- the pump has greater capacity than actually needed to remove liquid from the condenser, the excess capacity of the pump being utilized for drawing non-condensible vapors from the top of the heat exchange chamber down through the equalizer pipe and with the condensed liquid through the pump. 1n this way one pump serves as both a wet vacuum pump'to remove only liquid from the bottom of condenser c and as a l'dry vacuum pump to remove only gases from the exchanger.
- the lower part of the equalizer pipe is watercooled in order to condense such condensible gases as may be drawn Vdown through this equalizer pipe from the top of the heat exchange chamber.
- distilling liquid such as dry cleaners solvent, which comprises a solvent coolving chamber, a solvent evaporating chamber, a
- heat exchange chamber in the upper part of the evaporating chamber a coil in the heat exchange chamber through which the solvent to be distilled flows and in which the solvent is prelimjinarily lheated by solvent vapor and the discharge end of which extends downward and opens into the evaporating'chamber, means affording communication between the evaporating chamber and the heat exchange ⁇ chamber for the upward flow of solvent vapor, means affording a closed passage for the flow of solvent from the heat exchangeA chamber downward through the' evaporating chamberto the cooling chamber, a coil in the cooling chamber through which a cooling fluid is adapted to flow to effect cooling of the solvent, and means for outiiow of cooled solvent from the cooling chamber.
- a still for distilling liquid such as dry cleaners solvent which comprises a lower cooling chamber in which solvent is condensed and cooled, a middle evaporating chamber, above the cooling chamber, inwhich solvent is evaporated, an upper chamber above the evaporating chambervin which solventis preheated by heat exchange with solvent vapor, means to convey solvent through the upper chamber to the middle chamber, means for passage of solvent vapor from the middle chamber to the upper chamber, means providing a passage for solvent from the upper chamber, through, but out of heat-conducting relation with, the middle chamber, to
- a still for distilling liquids such as dry cleaners solvent which comprises 'a solvent cooling chamber, meanstherein to cool the solvent, a second chamber, means to effect evaporation of the solvent in the lower part of the second chamber, means in the upper part of the second chamber to effect heat exchange between the solvent vapors and the inflowing solvent before the latter is evaporated, and a conduit for outiiow of cooled and condensed vapors from the upper part of the second chamber to the cooling chamber and providing a space between it and the wall of the second chamber for inflow of vapors from the locus of evaporation tothe locus of heat exchange.
- a still for distilling liquid such as dry cleaners solvent which comprises a lower cooling chamber in which solvent is condensed and cooled, a middle evaporating chamber, above the cooling chamber, in which solvent is evaporated, an upper chamber above the evaporating chamber in which solvent is preheated by heat exchange with solvent vapor, means to convey solvent through the upper chamber to the middle chamber, a pipe connecting the upper and lower chambers and extending through the middle chamber, and means providing an annular passage for vapor from'the middle chamber along the lower Wall of the upper chamber, said passage cpening into the upper chamber a substantial distance below the upper end thereof.
- A' still for distilling liquids such as dry cleaners solvent which comprises a solvent cooling chamber, means therein to cool the solvent, a second chamber, means to effect evaporation of the solvent in the lower part of the second chamber, means in the upper part ofthe second chamber to effect heat exchange between the solventvapors and the iniiowing solvent before vthe latter is evaporated, a pipe providing a passage for downiiow of condensed solvent and uncondensed vapors, said pipe extending rthrough the lower part of said second chamber and expandedk 6.
- a still for distilling liquid -such as dry cleaners solvent which comprises a solvent cool- Y ing chamber, a second chamber superimposed of the solvent cooling chamber, a heat exchanger in the upper part of the second chamber through which solvent to be distilled flows and in which the solvent is adapted to be preliminarily heated by solvent vapors, an evaporator in the lower part of said second chamber, a conduit for the Vpassage of solvent from the heat exchanger downward to the evaporator, and a conduit affording within it a passage for condensate from the heat exchanger downward to the cooling chamber and around the outside of which solvent vapors are adapted to flow upward from the evaporator to the heat exchanger.
- a ⁇ still for distilling liquid such as dry cleaners solvent which comprises a lower cooling chamber in which condensed solvent is cooled, a .middle evaporating chamber, above the cooling chamber, in which solvent is evaporated, an upper chamber above the evaporating chamber in which solvent is preheated byA heat ⁇ lower chambers and expanded at its upper end t'o A.provide ⁇ a narrow annular passage between its upper end and the inner wall of the upper charnits ber, the upper end of said 'passage terminating;
- a still for distillingliquid -such as dry'cleanerssolvent which comprises Aa chamberthrough which are adapted to'flow ⁇ solvent-to be evaporated and, in vheat exchange-relation-therewith,
- an evapora'ting"v chamberv adapted to receivepreheated solvent from the rst cham# ber and v from which ⁇ solvent vapor is adapted to flow into the first chamber
- a cooling chamber adapted to receive solvent from rthe'rst charnber, means in the respective chambers to effect said heat exchange, evaporation and cooling, a
- pipe communicating with the upper part of the vapors from the evaporating chamber are largely condensed by heat exchange with solvent flowing toward the evaporating chamber, means in the respective chambers to effect said cooling, evapo-v ration and heat exchange, means to convey so1' vent from the heat exchanging chamber to the cooling chamber, 'and a pressure equalizing pipe line between the vapor spacen the top' of the heat exchanging chamberrand the bottom discharge from the cooling chamber.
- a still for distilling liquids such as dry cleaners solvent which comprises a solventcool-v ing chamber, a solvent evaporating chamber, ,a heat exchange chamber in which the vapors from the evaporating chamber are largely condensed by heat exchange withV solvent flowing toward the evaporating chamber, means in the respective chambersto effect said cooling, evaporation and heat exchange, means to convey solvent from the heat exchanging chamber to Athe cooling chamber, and a pressure equalizing'pipe line between the top of the heat exchanging chamber and the bottom of the cooling chamber, said pipe line havingra loop below the liquid level of the cooling chamber to form a liquid seal.
- a still for distilling/liquids such as dry cleaners solvent which comprises a solvent cooling chamber, a solvent evaporating chamber, la heat exchange chamber in which the vapors from e the evaporating chamber are largely condensed by heat exchange with solvent owing toward the evaporating chamber, means in the respective chambers to effect said cooling, evaporation and heat exchange chamber, and a lthird pipe connected with the other two pipes and through which both cooled solvent and incondensible gas may be withdrawn from the still.
- a still for distilling liquid such as dry c1eaners solvent, which comprises la chamber through which are adapted to flow solvent to be 1 evapqatedandgfin heat* exchange relationtneref with; solvent"v'apor,- 'an evaporating chamber adapted to receive preheatedsolvent from the v first c h'arr'iber i and *from which solvent vapor is adapted Ito flow into 'the ⁇ i'irst chamber, "a cooling chamberv adapted'to receivesolvent from the viirst chambe'nVmeans inthe respective chambers-'to Veffect said heat exchange; evaporation and cooling, 1 a pipe communicating with fthe upper 1 ⁇ part of the vfirstchamber and adapted to receivevapor therefrom,"and means adapted tofconvey accolingffluid into' heat exchangefrelation vwith said vapor pipe and thence through the cooling chamber into heat exchange relation with the solvent y Y therein.
- a still for distilling liquid such as dry cleaners solvent which comprises a solvent cool-r ⁇ ing ⁇ chamber, an evaporator, a heat exchanger adapted to receive solvent vapors from the' evapo- ⁇ rator andin which the solvent to be distilled is l incondensible vapors from the heat exchanger and condensed solvent from the cooling chamber, said means being so arranged as to provide a liquid seal formed-,by condensed solvent between said cooling chamber and said pipe.
- a still Vfor'distilling liquids such as dry cleaners solvent,vwhich comprises a solvent cooll ing chamber, a solvent evaporating chamber, a
- heat exchange chamber in which thefvapors from the evaporating chamber arelargely condensed by heat exchange with solvent flowing toward the ⁇ ⁇ evaporating chamber, ⁇ means, in the respective 'chambers to effect said cooling, evaporation and heat exchange, means to convey solvent from the heat exchange chamber to the cooling chamber,
- heat exchange chamber in which the vapors from the evaporating chamber are largely condensed by heat exchange with solvent owing toward the evaporating chamber, means in the respective vchambers to effect said cooling, evaporation and heat exchange, means to convey solvent from the heat exchange chamber to the coolingcham# ber, a pipe through which the cooled solvent is'adapted to outflow from the cooling chamber, a second pipe communicating with Vthe upper part of the heat exchange chamber and through which incondensible gas'is adapted to outiiow from the heat exchange chamber, a third pipe connected with the other two pipes and through which both cooled solvent and incondensible gas may be withdrawnfrom the still, and means to cool theincondensible gas flowing through the first pipe wherebyV any solvent vapors entrained therewith will be condensed and withdrawn through the third pipe.
- a still for distilling liquids such as dry the-heat exchange chamber to the cooling chamber a pipe through Which the cooled solvent is adapted to outflow from the cooling chamber, a'second pipe through which incondensible gas is adapted to outow from the heat exchange cham-r ber,V av third pipe connected With'the other'tvvo pipes and through which both cooled solvent andincondensible gas may be Withdrawn from the still, and means to coolthe inconden'siblegas.
- cooling means comprising al jacket surrounding lsuch ,pipe and throughk which the. cooling medium for the solvent is adapted to, flovv' 'on'its Way to the cooling chamber.
Description
Nov. 14, 1933. C, H. HAPGOOD y 1,935,183
APPARATUS FOR DISTILLING DRY CLEANERS SOLVENT Filed Jan. 3, 1929 2 Sheets-Sheet l Nov. 14, 1933. c. H. HAPGooD 1,935,183
APPARA'IUSA FOR DISTILLING DRY CLEANERS SOLVENT Filed Jan. 3, 1929 2 Sheets-Sheet 2 Cnus/warn/: 000 wifi@ 7 @gy f CIA 1n which- Patented Nov. 14, 1933v -llNirso .STATES ,flessdss earner vorgie-r;
APPARATUS DISTILLING DRY CLEANERS SOLVENT f Cyrus Howard Hapgood, Nutley, N. assigner to vThe De Laval `Separator Company, New York, N. Y., a corporation of New Jersey ApplicationrJanuaryB, 1929. Serial No. 330,009
16 claims.' (01; 19e- 15) l The object of my invention is to provide a stillfor the distillation of dry cleaners solvent, gaso- My invention comprises a still responding to.
the above requirements and having also other advantages, particularly economyin consumption of heat, continuity of operation, prevention of accumulation of vpermanent gases, andavoidance of loss of solvent vapor with permanent gases.
A still embodying my invention in a preferred form isshown in the accompanyingdrawings,
Y Fig'. lis a general elevation of the apparatus, vpartly inA section. o
Figs. 2 and 3A are,`respectively, a sectional plan View and elevationof the evaporator.
The machine comprises a solvent cooling chamber c, a solvent evaporatingchamber b nl'ountedV v on the'cooling chamber, a heat exchanging 'cham'- ber a mounted on the evaporating chamber, and coils and pipe connections as hereinafter described.
The solvent a pipe d into and through a coil of pipe e in the chambera, wherein the solvent isv preliminarily, heated by 'heat ,exchange with solvent vapors as hereinafter described. The heated liquid solvent thence 'flows through a pipe f,` in which is interposed a feed lregulator g, into the evaporating chamber b. In chamber. b are a coil or coils of pipe h' through which circulates'steam, which evaporates the solvent, leaving a residue containing impurities and which, `from time to time, may be withdrawn through drain i. l
The .solvent vapor rises and enters chamber a, wherein it transfers much of its heat to the inflowingsolvent in coil e, the vaporbeing largely condensed and flowingdown, through a piped', into the cooling chamber c. 'y
Extending through pipe y is a tubelc (preferably composed of 'asbestos covered with sheetmetal), the upper part of which is expanded to form a .funnel-shaped upper end m extending outside the coil e near the Wall of chamber a, leaving an annular space between it and the wall for the' yupiiow v1of vsolvent vapor. If the Vfunnel were liquid to be distilled cows through j l 'solvent vapor that may be entrained therewith,
eliminated, the vapor wouldfnot be compelled to flow into heat exchange relation with an effective length of the coile and there would'be Y .Very partial condensation with limited heat transfer.V The'funnel alsoacts to collect solvent that 60 has condensed and deliver it to tube k. The
Vtube it andfunnel m are made of non-heat conducting material in order that the solvent should not be reheated inthe course of its downiiow through funnel m and tubec,
In chamber c are a c'oilv or coils o fv pipe n through which circulates cold `water,whe'reby the remaining vapor flowing from heat exchanger a ,is condensed and the condensate is cooled. The lcooled solvent is pumped out through pipe o and thence through pipe p; the pump, not shown, being positioned on pipe p or an extension thereof.
' rt is preferred to make coils h inthe solvent evaporating' chamber, asshown in Figs. 2 and 3, namely, of tubing which is relatively Wide and thin in cross-section and which is wound'upon itself spirally; there beins7 preferably a number of coils arranged in multiple and'connected, at top andfbottom, withmanifolds randy; The coils n in the solvent cooling chamber may be of any conventional type. Y In the evaporating operation, 'a small amount of permanent gas maybe 'driven off which, without some provision rto prevent it, would accumulate in the top' of chamber a and ultimately pre- 85 vent the successful operation of the still. lSuch permanent gas, together with small amounts rof kcarried away, through pipe ip, with the cooled solvent from pipe o K Itis found desirable to maintain as higha vacuum as possible in the chambers a, b and vc when distilling. v l
j The pipe l1*connected with pipe 1` and regulator g functions tov equalize thepressure between the solvent evaporating chamber b andthe feed regulator g.f If lthis pressure were not equalized, the
liquid levels in solvent evaporating chamber lb,
andthe feed regulator g would not be maintained the same.V
Among the fnovelstructural features and lad- 1710 vantages may be enumerated the following:
The heat exchanger is, in eiiect, the upper part of the evaporator chamber.
Means are provided for accumulating the condensed vapors which are condensed by the heat exchanging coils and for conveying said condensed vapors, by gravity, with the uncondensed vapors, to the condenser.
The top of the heat exchange chamber is connected by a pipe with the bottom of the condenser chamber to equalize pressure, the pipe having a loop below the liquid level of the condenser to form a liquid seal.
The suction line to the pump is taken oli of this pressure equalizing line at the level of the condensed liquid in the condenser.
rThe pump has greater capacity than actually needed to remove liquid from the condenser, the excess capacity of the pump being utilized for drawing non-condensible vapors from the top of the heat exchange chamber down through the equalizer pipe and with the condensed liquid through the pump. 1n this way one pump serves as both a wet vacuum pump'to remove only liquid from the bottom of condenser c and as a l'dry vacuum pump to remove only gases from the exchanger.
' The lower part of the equalizer pipe is watercooled in order to condense such condensible gases as may be drawn Vdown through this equalizer pipe from the top of the heat exchange chamber.
- Having now fully described my invention, what I claim and desire to protect by Letters Patent 1s:
l. Ay still for, distilling liquid such as dry cleaners solvent, which comprises a solvent coolving chamber, a solvent evaporating chamber, a
heat exchange chamber in the upper part of the evaporating chamber, a coil in the heat exchange chamber through which the solvent to be distilled flows and in which the solvent is prelimjinarily lheated by solvent vapor and the discharge end of which extends downward and opens into the evaporating'chamber, means affording communication between the evaporating chamber and the heat exchange` chamber for the upward flow of solvent vapor, means affording a closed passage for the flow of solvent from the heat exchangeA chamber downward through the' evaporating chamberto the cooling chamber, a coil in the cooling chamber through which a cooling fluid is adapted to flow to effect cooling of the solvent, and means for outiiow of cooled solvent from the cooling chamber.
2. A still for distilling liquid such as dry cleaners solvent, which comprises a lower cooling chamber in which solvent is condensed and cooled, a middle evaporating chamber, above the cooling chamber, inwhich solvent is evaporated, an upper chamber above the evaporating chambervin which solventis preheated by heat exchange with solvent vapor, means to convey solvent through the upper chamber to the middle chamber, means for passage of solvent vapor from the middle chamber to the upper chamber, means providing a passage for solvent from the upper chamber, through, but out of heat-conducting relation with, the middle chamber, to
the lower chamber, and means to withdraw cooled'solvent from the lower chamber.
3. A still for distilling liquids such as dry cleaners solvent, which comprises 'a solvent cooling chamber, meanstherein to cool the solvent, a second chamber, means to effect evaporation of the solvent in the lower part of the second chamber, means in the upper part of the second chamber to effect heat exchange between the solvent vapors and the inflowing solvent before the latter is evaporated, and a conduit for outiiow of cooled and condensed vapors from the upper part of the second chamber to the cooling chamber and providing a space between it and the wall of the second chamber for inflow of vapors from the locus of evaporation tothe locus of heat exchange.
4. A still for distilling liquid such as dry cleaners solvent, which comprises a lower cooling chamber in which solvent is condensed and cooled, a middle evaporating chamber, above the cooling chamber, in which solvent is evaporated, an upper chamber above the evaporating chamber in which solvent is preheated by heat exchange with solvent vapor, means to convey solvent through the upper chamber to the middle chamber, a pipe connecting the upper and lower chambers and extending through the middle chamber, and means providing an annular passage for vapor from'the middle chamber along the lower Wall of the upper chamber, said passage cpening into the upper chamber a substantial distance below the upper end thereof.
v5. A' still for distilling liquids such as dry cleaners solvent, which comprises a solvent cooling chamber, means therein to cool the solvent, a second chamber, means to effect evaporation of the solvent in the lower part of the second chamber, means in the upper part ofthe second chamber to effect heat exchange between the solventvapors and the iniiowing solvent before vthe latter is evaporated, a pipe providing a passage for downiiow of condensed solvent and uncondensed vapors, said pipe extending rthrough the lower part of said second chamber and expandedk 6. A still for distilling liquid -such as dry cleaners solvent, which comprises a solvent cool- Y ing chamber, a second chamber superimposed of the solvent cooling chamber, a heat exchanger in the upper part of the second chamber through which solvent to be distilled flows and in which the solvent is adapted to be preliminarily heated by solvent vapors, an evaporator in the lower part of said second chamber, a conduit for the Vpassage of solvent from the heat exchanger downward to the evaporator, and a conduit affording within it a passage for condensate from the heat exchanger downward to the cooling chamber and around the outside of which solvent vapors are adapted to flow upward from the evaporator to the heat exchanger. v
'7. A` still for distilling liquid such as dry cleaners solvent, which comprises a lower cooling chamber in which condensed solvent is cooled, a .middle evaporating chamber, above the cooling chamber, in which solvent is evaporated, an upper chamber above the evaporating chamber in which solvent is preheated byA heat `lower chambers and expanded at its upper end t'o A.provide `a narrow annular passage between its upper end and the inner wall of the upper charnits ber, the upper end of said 'passage terminating;
substantially above thebottom andsubstantially belowthe'top ofthe upper chamber, the solvent vapor flowingthroughsaid passage from the lmiddle chamber "into the vupper chamber.
8. A still for distillingliquid -such as dry'cleanerssolvent, which comprises Aa chamberthrough which are adapted to'flow` solvent-to be evaporated and, in vheat exchange-relation-therewith,
solvent vapor, an evapora'ting"v chamberv adapted to receivepreheated solvent from the rst cham# ber and v from which `solvent vapor is adapted to flow into the first chamber, a cooling chamber adapted to receive solvent from rthe'rst charnber, means in the respective chambers to effect said heat exchange, evaporation and cooling, a
pipe communicating with the upper part of the vapors from the evaporating chamber are largely condensed by heat exchange with solvent flowing toward the evaporating chamber, means in the respective chambers to effect said cooling, evapo-v ration and heat exchange, means to convey so1' vent from the heat exchanging chamber to the cooling chamber, 'and a pressure equalizing pipe line between the vapor spacen the top' of the heat exchanging chamberrand the bottom discharge from the cooling chamber. 'Y
10. A still for distilling liquids such as dry cleaners solvent,which comprises a solventcool-v ing chamber, a solvent evaporating chamber, ,a heat exchange chamber in which the vapors from the evaporating chamber are largely condensed by heat exchange withV solvent flowing toward the evaporating chamber, means in the respective chambersto effect said cooling, evaporation and heat exchange, means to convey solvent from the heat exchanging chamber to Athe cooling chamber, and a pressure equalizing'pipe line between the top of the heat exchanging chamber and the bottom of the cooling chamber, said pipe line havingra loop below the liquid level of the cooling chamber to form a liquid seal. a
11. A still for distilling/liquids such as dry cleaners solvent, which comprises a solvent cooling chamber, a solvent evaporating chamber, la heat exchange chamber in which the vapors from e the evaporating chamber are largely condensed by heat exchange with solvent owing toward the evaporating chamber, means in the respective chambers to effect said cooling, evaporation and heat exchange chamber, and a lthird pipe connected with the other two pipes and through which both cooled solvent and incondensible gas may be withdrawn from the still. I
12. A still for distilling liquid such as dry c1eaners solvent, which comprises la chamber through which are adapted to flow solvent to be 1 evapqatedandgfin heat* exchange relationtneref with; solvent"v'apor,- 'an evaporating chamber adapted to receive preheatedsolvent from the v first c h'arr'iber i and *from which solvent vapor is adapted Ito flow into 'the `i'irst chamber, "a cooling chamberv adapted'to receivesolvent from the viirst chambe'nVmeans inthe respective chambers-'to Veffect said heat exchange; evaporation and cooling, 1 a pipe communicating with fthe upper 1 `part of the vfirstchamber and adapted to receivevapor therefrom,"and means adapted tofconvey accolingffluid into' heat exchangefrelation vwith said vapor pipe and thence through the cooling chamber into heat exchange relation with the solvent y Y therein.
13. A still for distilling liquid such as dry cleaners solvent which comprises a solvent cool-r` ing` chamber, an evaporator, a heat exchanger adapted to receive solvent vapors from the' evapo-` rator andin which the solvent to be distilled is l incondensible vapors from the heat exchanger and condensed solvent from the cooling chamber, said means being so arranged as to provide a liquid seal formed-,by condensed solvent between said cooling chamber and said pipe.`
' 14. A still Vfor'distilling liquids such as dry cleaners solvent,vwhich comprises a solvent cooll ing chamber, a solvent evaporating chamber, a
, heat exchange chamber in which thefvapors from the evaporating chamber arelargely condensed by heat exchange with solvent flowing toward the` `evaporating chamber,` means, in the respective 'chambers to effect said cooling, evaporation and heat exchange, means to convey solvent from the heat exchange chamber to the cooling chamber,
1a pressure equalizing pipe line between the top of the heat exchanging chamber and the bot-'- tom of the cooling chamber, and a` pipe connected A'with said pipe line Vand through which cooled vsolvent from the coolingy chamber and mooncleaners solvent, which comprises a solvent cool' ing chamber, a solvent evaporating chamber, va
heat exchange chamber in which the vapors from the evaporating chamber are largely condensed by heat exchange with solvent owing toward the evaporating chamber, means in the respective vchambers to effect said cooling, evaporation and heat exchange, means to convey solvent from the heat exchange chamber to the coolingcham# ber, a pipe through which the cooled solvent is'adapted to outflow from the cooling chamber, a second pipe communicating with Vthe upper part of the heat exchange chamber and through which incondensible gas'is adapted to outiiow from the heat exchange chamber, a third pipe connected with the other two pipes and through which both cooled solvent and incondensible gas may be withdrawnfrom the still, and means to cool theincondensible gas flowing through the first pipe wherebyV any solvent vapors entrained therewith will be condensed and withdrawn through the third pipe.
16. A still for distilling liquids such as dry the-heat exchange chamber to the cooling chamber, a pipe through Which the cooled solvent is adapted to outflow from the cooling chamber, a'second pipe through which incondensible gas is adapted to outow from the heat exchange cham-r ber,V av third pipe connected With'the other'tvvo pipes and through which both cooled solvent andincondensible gas may be Withdrawn from the still, and means to coolthe inconden'siblegas.
flowingvthrough the secondpipewhereby anyV solvent vapors entrained therewith willbe condensed, said cooling means comprising al jacket surrounding lsuch ,pipe and throughk which the. cooling medium for the solvent is adapted to, flovv' 'on'its Way to the cooling chamber.
CYRUS HOWARD HAPGoz'DD:v
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US330009A US1935183A (en) | 1929-01-03 | 1929-01-03 | Apparatus for distilling dry cleaners' solvent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US330009A US1935183A (en) | 1929-01-03 | 1929-01-03 | Apparatus for distilling dry cleaners' solvent |
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| Publication Number | Publication Date |
|---|---|
| US1935183A true US1935183A (en) | 1933-11-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| US330009A Expired - Lifetime US1935183A (en) | 1929-01-03 | 1929-01-03 | Apparatus for distilling dry cleaners' solvent |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3219555A (en) * | 1962-01-12 | 1965-11-23 | American Mach & Foundry | Distillation unit with still supported condenser |
| US4339307A (en) * | 1977-01-21 | 1982-07-13 | Ellis Jr John C | Distillation apparatus |
| FR2625914A1 (en) * | 1988-01-18 | 1989-07-21 | Louma Jean | DEVICE CONSTITUTING A SOLVENT REGENERATOR |
| FR2684562A1 (en) * | 1991-12-06 | 1993-06-11 | Alpasonic Sa | Apparatus for recycling solvents |
| US5334291A (en) * | 1993-07-09 | 1994-08-02 | Safety-Kleen Corp. | On-site, controlled waste concentrator and solvent regenerator apparatus |
| US20090283398A1 (en) * | 2006-08-31 | 2009-11-19 | Masaru Noro | Distillation apparatus |
-
1929
- 1929-01-03 US US330009A patent/US1935183A/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3219555A (en) * | 1962-01-12 | 1965-11-23 | American Mach & Foundry | Distillation unit with still supported condenser |
| US4339307A (en) * | 1977-01-21 | 1982-07-13 | Ellis Jr John C | Distillation apparatus |
| FR2625914A1 (en) * | 1988-01-18 | 1989-07-21 | Louma Jean | DEVICE CONSTITUTING A SOLVENT REGENERATOR |
| WO1989006716A1 (en) * | 1988-01-18 | 1989-07-27 | Jean Louma | Solvent regenerator |
| FR2684562A1 (en) * | 1991-12-06 | 1993-06-11 | Alpasonic Sa | Apparatus for recycling solvents |
| US5334291A (en) * | 1993-07-09 | 1994-08-02 | Safety-Kleen Corp. | On-site, controlled waste concentrator and solvent regenerator apparatus |
| US20090283398A1 (en) * | 2006-08-31 | 2009-11-19 | Masaru Noro | Distillation apparatus |
| US8241466B2 (en) * | 2006-08-31 | 2012-08-14 | Sanyo Electric Co., Ltd. | Distillation apparatus |
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