US3577320A - Distillation apparatus with vacuum controlled by rate of distillate flow - Google Patents

Distillation apparatus with vacuum controlled by rate of distillate flow Download PDF

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US3577320A
US3577320A US773885A US3577320DA US3577320A US 3577320 A US3577320 A US 3577320A US 773885 A US773885 A US 773885A US 3577320D A US3577320D A US 3577320DA US 3577320 A US3577320 A US 3577320A
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distillate
rate
evaporation
distillation apparatus
vacuum
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US773885A
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Forrest Thompson Randell
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Weir Group PLC
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G&J Weir Ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D1/00—Evaporating
    • B01D1/0082—Regulation; Control
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D3/00—Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping
    • B01D3/10—Vacuum distillation
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S159/00—Concentrating evaporators
    • Y10S159/16—Vacuum
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S203/00—Distillation: processes, separatory
    • Y10S203/19—Sidestream

Definitions

  • Distillation apparatus comprises a vessel having an evaporation section including a heating coil for the liquid to be distilled; and a condensing section including a vapour cooling coil; a heating medium supply to the heating coil; a pump or air ejector for creating a vacuum Within the vessel; and a distillate outlet conduit from the condensing section.
  • a sensor for sensing the rate of distillation of liquid, and a valve to regulate the vacuum within the vessel, the valve being operable by the sensor to regulate said vacuum in accordance with the rate of distillation whereby the rate of evaporation and consequently distillation are maintained at a desired value.
  • This invention relates to distillation apparatus having an evaporation section including heating means for the liquid to be distilled, a heating medium supply to the evaporation section, a condensing section including vapour cooling means, means for creating a vacuum within the distillation apparatus and an outlet from the condensing section for distillate.
  • distillation apparatus is referred to hereinafter as distillation apparatus of the type aforesaid.
  • distillation apparatus of the type aforesaid, it is usually arranged that the apparatus operates whilst a predetermined set of operating conditions prevail within the apparatus.
  • These conditions may include, for example, the temperature of the heating medium, the temperature of the liquid to be distilled passing to the evaporation section, and the pressure within the apparatus. Consequently a desired rate of evaporation can be attained and satisfactory distillate quality can be assured.
  • some of the operation conditions may change to cause excessive evaporation -with the result that distillate of unsatisfactory quality may be continuously produced. It is an object of the present invention to obviate or mitigate this disadvantage.
  • sensing means for sensing the rate of evaporation of liquid
  • vacuum control means actuable by said sensing means to regulate the vacuum within the distillation apparatus in accordance with said rate of distillation whereby the rate of evaporation is maintained at a desired value.
  • the distillation apparatus may include a distillate reservoir, an outlet conduit means from the condensing section, and the sensing means includes means for restricting the ow of distillate from the condensing section such that, in the event of excessive evaporation and consequent excessive distillation, the level of distillate in the reservoir rises, the sensing means being operable by the level of distillate in said reservoir to actuate said control means.
  • said air inlet is provided at the condensing section.
  • temperature sensing means are provided in the heating medium supply to the evaporation 3,577,320 Patented May 4, 1971 ICC section and operatively connected to the vacuum control means, whereby the vacuum within the sections may be regulated in accordance with the temperature of the heating medium.
  • distillation apparatus for producing fresh water from salt water includes a vertically disposed casing housing a chamber having an evaporation section 1 situated at the base thereof and a condensing section 2 thereabove. Mist separators 3 are provided at the inlet to the condensing section 2 and in the path of upowing vapour from the evaporation section 1.
  • a feed Water tank 4 at the base of the evaporation section 1 provides a reservoir for liquid to be distilled, and a raw feed water inlet conduit 5 leads into the reservoid 4.
  • a distillate overflow conduit 6 is provided connecting with the feed water inlet conduit 5.
  • a bank of vertical riser tubes 7 enclosed in an evaporation casing connects the reservoir 4 with the vapour space 1a of the evaporation section 1 from which excess brine can be drained through a conduit 9 under the inlluence of a jet pump 10.
  • Heating medium which is preferably steam or hot water, is passed into the evaporation casing 8 through an inlet 11, circulates around the riser tubes 7 to cause evaporation of the brine therein and passes out again through an outlet 12.
  • the condensing section 2 includes a reservoir 20 for vdistillate and a bank of U-tubes 16 extending horizontally into the condensing section 2 serving for through How of cooling water.
  • a motor driven pump 15 is provided to draw olf the distillate via conduits 13, 14 from the distillate reservoir 20 and directs same to a fresh water storage tank (not shown), via conduits 28, a non-return valve 29 being in the outlet 28 from the pump to prevent the sucking back of fresh water.
  • Means for sensing the distillate quality is provided as described in the applicants U.S. Pat. No. 3,463,706 whereby if unsatisfactory distillate is produced it is fed back to the brine reservoir.
  • a sub-atmospheric pressure or vacuum is maintained within the vertical chamber of the distillation apparatus by the connection of the jet pump 10 additionally to the condensing section via the conduit 21 in the manner described in the applicants co-pending U.S. Ser. No. 696,579 means being provided to ensure that the vacuum within the condensing section 2 is greater than that within the evaporating section 1.
  • the provision of a vacuum in the casing permits a greater rate of evaporation for the same heat input.
  • an air inlet conduit 30 is provided to the condensing section 2 and a valve 31 is included in said air inlet conduit 30 to regulate the passage of air therethrough to the vertical chamber.
  • a restrictive device 32 4with a calibrated maximum fluid flow therethrough is intercalated in the conduit 13 and adapted such that, with excessive distillate ow in conduit 13, the level of distillate in overflow conduit 13a will rise; the sensing means 32a will include equipment enabling the transmission of signals to relay 33 via line 34 when the level of distillate has risen appropriately in conduit 13a.
  • the relay 33 is operatively connected to the air valve 31 to cause appropriate movement of the valve in accordance with the distillate level in conduit 13a.
  • a flowmeter may be intercalated in the conduit 13 from reservoir 20 to measure the distillate flow. 'I'he flow-meter would contain equipment enabling the transmission of signals to relay 33 to cause appropriate movement of valve 31.
  • a temperature sensing device 35 is provided in the heating medium inlet 11 and is connected to the relay 33 via the lines 34, 36 to additionally regulate the air val-ve 31 by means of said relay 33 in accordance with the heating medium temperature.
  • the distillation apparatus operates as follows: brine is evaporated in the evaporation section 1 and the vapour is driven olf upwards through the separators 3 wherein impurities are removed; the purified vapour is passed into the condensing section 2, and the vapour is condensed, and distillate formed is precipitated into the distillate reservoir 20 whence it is pumped to the fresh water tank. If the distillate is of unsatisfactory quality then the procedure described in the applicants U.S.A. Patent No. 3,463,706, is brought into operation to return the unsatisfactory distillate to the reservoir 4.
  • the salinometer 37 measures the quality o'f the distillate via distillate quality sensor 38 and, if the distillate is unsatisfactory, the salinometer 37 signals the switch 39 to stop motor 40 and the distillate returns to the reservoir 4 via conduits 5, 6.
  • the temperature sensing means 35 will cause actuation of the air valve 31 to reduce the vacuum within the chamber and the capacity for evaporation will be reduced.
  • the heating medium being the jacket cooling water of an internal combustion engine and the engine is operating under low power conditions, then the above provisions will avoid undercooling of the jacket cooling water.
  • Distillation apparatus comprising a casing housing Cil an evaporation section and a condensing section including rvapor cooling means in open communication with the evaporation section whereby vapor flows freely from the evaporation section to the condensing section; an air pump for creating a sub-atmospheric pressure within the casing such as to permit said free ow of vapor between the sections; an outlet conduit from the condensing section for outtlow of distillate; distillate ilow sensing means in the outlet conduit for measuring the rate of distillate outilow from the condensing section; an air inlet duct to the casing; and an air-bleed valve in the air inlet duct, means operatively connecting said air-bleed valve to said distillate flow sensing means whereby the air-bleed lvalve is controlled by the distillate ow sensing means and is actuated in accordance with said rate of distillate outovv to regulate the pressure within the casing to maintain the rate of production o'f vapor in the evaporation
  • distillate flow sensing means includes a distillate overow conduit in parallel and in lluid communication with said outlet conduit, a restriction in the outlet conduit downstream of the overliow conduit whereby, in the event of an excessive rate of flow of distillate in theoutlet conduit, the level of distillate in the overflow conduit rises, and an actuator responsive to the level of distillate in said overflow conduit to control said air-bleed valve.
  • Distillation apparatus as claimed in clairn 1, wherein the evaporation section includes heating means for distilland and temperature sensing means are provided in a heating medium supply to the heating means of the evap oration section and operatively connected to the air-bleed valve, whereby the pressure within the casing means may be regulated in accordance with the temperature of the heating medium.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
  • Heat Treatment Of Water, Waste Water Or Sewage (AREA)
  • Jet Pumps And Other Pumps (AREA)

Abstract

DISTILLATION APPARATUS COMPRISES A VESSEL HAVING AN EVAPORATION SECTION INCLUDING A HEATING COIL FOR THE LIQUID TO BE DISTILLED; AND A CONDENSING SECTION INCLUDING A VAPOUR COOLING COIL; A HEATING MEDIUM SUPPLY TO THE HEATING COIL; A PUMP OR AIR EJECTOR FOR CREATING A VACUUM WITHIN THE VESSEL; AND A DISTILLATE OUTLET CONDUIT FROM THE CONDESNING SECTION. THERE ARE PROVIDED A SENSOR FOR SENSING THE RATE OF DISTILLATION OF LIQUID, AND A VALVE TO REGULATE THE VACCUUM WITHIN THE VESSEL, THE VALVE BEING OPERABLE BY THE SENSOR TO REGULATE SAID VACUUM IN ACCORDANCE WITH THE RATE OF DISTILLATIN WHEREBY THE RATE OF EVAPORATION AND CONSEQUENTLY DISTILLATION ARE MAINTAINED AT A DESIRED VALUE.

Description

Maym4, 1971 F, r RANDELL 3,517,320
DISTILLATION APPARATUS WITH VACUUM coNTRoLLED BY RATE oF DISTILLATE FLow Filed NOV. 6, 1968 /l Hurm'y a United States Patent 3,577,320 DISTILLATION APPARATUS WITH VACUUM CONTROLLED BY RATE F DISTILLATE FLOW Forrest Thompson Randell, Glasgow, Scotland, assignor to G. & J. Weir Limited, Cathcart, Glasgow, Scotland Filed Nov. 6, 1968, Ser. No. 773,885 Claims priority, application Great Britain, Nov. 24, 1967, 53,475/67 Int. Cl. B01d 3/42 U.S. Cl. 202-160 4 Claims ABSTRACT OF THE DISCLOSURE Distillation apparatus comprises a vessel having an evaporation section including a heating coil for the liquid to be distilled; and a condensing section including a vapour cooling coil; a heating medium supply to the heating coil; a pump or air ejector for creating a vacuum Within the vessel; and a distillate outlet conduit from the condensing section. There are provided a sensor for sensing the rate of distillation of liquid, and a valve to regulate the vacuum within the vessel, the valve being operable by the sensor to regulate said vacuum in accordance with the rate of distillation whereby the rate of evaporation and consequently distillation are maintained at a desired value.
This invention relates to distillation apparatus having an evaporation section including heating means for the liquid to be distilled, a heating medium supply to the evaporation section, a condensing section including vapour cooling means, means for creating a vacuum within the distillation apparatus and an outlet from the condensing section for distillate. Such distillation apparatus is referred to hereinafter as distillation apparatus of the type aforesaid.
In distillation apparatus of the type aforesaid, it is usually arranged that the apparatus operates whilst a predetermined set of operating conditions prevail within the apparatus.
These conditions may include, for example, the temperature of the heating medium, the temperature of the liquid to be distilled passing to the evaporation section, and the pressure within the apparatus. Consequently a desired rate of evaporation can be attained and satisfactory distillate quality can be assured. However, some of the operation conditions may change to cause excessive evaporation -with the result that distillate of unsatisfactory quality may be continuously produced. It is an object of the present invention to obviate or mitigate this disadvantage.
According to the present invention in distillation apparatus of the type aforesaid there are provided sensing means for sensing the rate of evaporation of liquid, and vacuum control means actuable by said sensing means to regulate the vacuum within the distillation apparatus in accordance with said rate of distillation whereby the rate of evaporation is maintained at a desired value.
The distillation apparatus may include a distillate reservoir, an outlet conduit means from the condensing section, and the sensing means includes means for restricting the ow of distillate from the condensing section such that, in the event of excessive evaporation and consequent excessive distillation, the level of distillate in the reservoir rises, the sensing means being operable by the level of distillate in said reservoir to actuate said control means.
Preferably said air inlet is provided at the condensing section.
Preferably further, temperature sensing means are provided in the heating medium supply to the evaporation 3,577,320 Patented May 4, 1971 ICC section and operatively connected to the vacuum control means, whereby the vacuum within the sections may be regulated in accordance with the temperature of the heating medium.
An embodiment of the present invention will now be described merely by way of example with reference to the accompanying drawing which shows schematically the arrangement of a distillation plant according to the present invention. Referring to the drawing, distillation apparatus for producing fresh water from salt water (brine) includes a vertically disposed casing housing a chamber having an evaporation section 1 situated at the base thereof and a condensing section 2 thereabove. Mist separators 3 are provided at the inlet to the condensing section 2 and in the path of upowing vapour from the evaporation section 1.
A feed Water tank 4 at the base of the evaporation section 1 provides a reservoir for liquid to be distilled, and a raw feed water inlet conduit 5 leads into the reservoid 4. A distillate overflow conduit 6 is provided connecting with the feed water inlet conduit 5.
A bank of vertical riser tubes 7 enclosed in an evaporation casing connects the reservoir 4 with the vapour space 1a of the evaporation section 1 from which excess brine can be drained through a conduit 9 under the inlluence of a jet pump 10. Heating medium, which is preferably steam or hot water, is passed into the evaporation casing 8 through an inlet 11, circulates around the riser tubes 7 to cause evaporation of the brine therein and passes out again through an outlet 12.
The condensing section 2 includes a reservoir 20 for vdistillate and a bank of U-tubes 16 extending horizontally into the condensing section 2 serving for through How of cooling water. A motor driven pump 15 is provided to draw olf the distillate via conduits 13, 14 from the distillate reservoir 20 and directs same to a fresh water storage tank (not shown), via conduits 28, a non-return valve 29 being in the outlet 28 from the pump to prevent the sucking back of fresh water. Means for sensing the distillate quality is provided as described in the applicants U.S. Pat. No. 3,463,706 whereby if unsatisfactory distillate is produced it is fed back to the brine reservoir.
A sub-atmospheric pressure or vacuum is maintained within the vertical chamber of the distillation apparatus by the connection of the jet pump 10 additionally to the condensing section via the conduit 21 in the manner described in the applicants co-pending U.S. Ser. No. 696,579 means being provided to ensure that the vacuum within the condensing section 2 is greater than that within the evaporating section 1. The provision of a vacuum in the casing permits a greater rate of evaporation for the same heat input.
To provide control of the vacuum within the vertical chamber of the distillation apparatus an air inlet conduit 30 is provided to the condensing section 2 and a valve 31 is included in said air inlet conduit 30 to regulate the passage of air therethrough to the vertical chamber. A restrictive device 32 4with a calibrated maximum fluid flow therethrough is intercalated in the conduit 13 and adapted such that, with excessive distillate ow in conduit 13, the level of distillate in overflow conduit 13a will rise; the sensing means 32a will include equipment enabling the transmission of signals to relay 33 via line 34 when the level of distillate has risen appropriately in conduit 13a. The relay 33 is operatively connected to the air valve 31 to cause appropriate movement of the valve in accordance with the distillate level in conduit 13a.
As an alternative to the restrictive device 32, a flowmeter may be intercalated in the conduit 13 from reservoir 20 to measure the distillate flow. 'I'he flow-meter would contain equipment enabling the transmission of signals to relay 33 to cause appropriate movement of valve 31.
Also, a temperature sensing device 35 is provided in the heating medium inlet 11 and is connected to the relay 33 via the lines 34, 36 to additionally regulate the air val-ve 31 by means of said relay 33 in accordance with the heating medium temperature.
The distillation apparatus operates as follows: brine is evaporated in the evaporation section 1 and the vapour is driven olf upwards through the separators 3 wherein impurities are removed; the purified vapour is passed into the condensing section 2, and the vapour is condensed, and distillate formed is precipitated into the distillate reservoir 20 whence it is pumped to the fresh water tank. If the distillate is of unsatisfactory quality then the procedure described in the applicants U.S.A. Patent No. 3,463,706, is brought into operation to return the unsatisfactory distillate to the reservoir 4. Thus, the salinometer 37 measures the quality o'f the distillate via distillate quality sensor 38 and, if the distillate is unsatisfactory, the salinometer 37 signals the switch 39 to stop motor 40 and the distillate returns to the reservoir 4 via conduits 5, 6.
However, conditions may be prevalent within the distillation apparatus, such as for example, excessive vacuum or excessively high temperature of the heating medium, resulting in excessive evaporation of brine and the consequent continuous production of distillate which will probably be of unsatisfactory quality. The quantity of distillate condensed will of course be directly proportional to the quantity of brine evaporated. An increased quantity of distillate will be discharged into the conduit 13; as a result the excessive quantities of distillate produced and the restrictivel device 32 will cause the liquid level in conduit 13a to rise to a sufficient level to actuate the sensing means 32A; consequently, the air valve 31 will be opened appropriately by the sensing means 32A. I'f alternatively a ow-meter is used, the resultant excessive quantities of distillate produced will cause the flow-meter to signal the relay 33 to open air valve 31 appropriately. Air will consequently leak into the condensing and evaporating sections 1, 2 of the vertical chamber, the vacuum therein will be reduced; and the thermal balance conditions within the chamber to give satisfactory distillate Will be restored. The rate of evaporation will fall, but satisfactory distillate will be produced.
JIn the event of the temperature of the heating medium falling, the temperature sensing means 35 will cause actuation of the air valve 31 to reduce the vacuum within the chamber and the capacity for evaporation will be reduced. In the case of the heating medium being the jacket cooling water of an internal combustion engine and the engine is operating under low power conditions, then the above provisions will avoid undercooling of the jacket cooling water.
I claim:
1. Distillation apparatus comprising a casing housing Cil an evaporation section and a condensing section including rvapor cooling means in open communication with the evaporation section whereby vapor flows freely from the evaporation section to the condensing section; an air pump for creating a sub-atmospheric pressure within the casing such as to permit said free ow of vapor between the sections; an outlet conduit from the condensing section for outtlow of distillate; distillate ilow sensing means in the outlet conduit for measuring the rate of distillate outilow from the condensing section; an air inlet duct to the casing; and an air-bleed valve in the air inlet duct, means operatively connecting said air-bleed valve to said distillate flow sensing means whereby the air-bleed lvalve is controlled by the distillate ow sensing means and is actuated in accordance with said rate of distillate outovv to regulate the pressure within the casing to maintain the rate of production o'f vapor in the evaporation section at a constant value.
2. Distillation apparatus as claimed in claim 1, Wherein the distillate flow sensing means includes a distillate overow conduit in parallel and in lluid communication with said outlet conduit, a restriction in the outlet conduit downstream of the overliow conduit whereby, in the event of an excessive rate of flow of distillate in theoutlet conduit, the level of distillate in the overflow conduit rises, and an actuator responsive to the level of distillate in said overflow conduit to control said air-bleed valve.
3. Distillation apparatus as claimed in claim 1, wherein said air inlet duct is provided at the condensing section.
4. Distillation apparatus as claimed in clairn 1, wherein the evaporation section includes heating means for distilland and temperature sensing means are provided in a heating medium supply to the heating means of the evap oration section and operatively connected to the air-bleed valve, whereby the pressure within the casing means may be regulated in accordance with the temperature of the heating medium.
References Cited UNITED STATES PATENTS 2,079,897 5/1937 Brown 202-203 2,441,361 5/ 1948 Kirgan 202-206 3,055,810 9/1962 Skow 202-206 3,177,125 4/1965 Berger 203-2 3,269,919 8/1966 Baily et al. 202-206 3,311,543 3/1967 Loebel 202-206 3,389,059 6/1968 Goeldner 203-1 3,428,527 2/1969 Rijnsdorp et al. 202-206 3,441,483 4/1969 Hart 203-2 WILBUR L. BASCOMB, JR., Primary Examiner U.S. Cl. X.R.
US773885A 1967-11-24 1968-11-06 Distillation apparatus with vacuum controlled by rate of distillate flow Expired - Lifetime US3577320A (en)

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GB53475/67A GB1212215A (en) 1967-11-24 1967-11-24 Improvements in or relating to distillation apparatus

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US (1) US3577320A (en)
JP (1) JPS4927257B1 (en)
BE (1) BE723972A (en)
DE (1) DE1808985B2 (en)
DK (1) DK131612C (en)
ES (1) ES360499A1 (en)
FR (1) FR1592802A (en)
GB (1) GB1212215A (en)
NL (1) NL142076B (en)
NO (1) NO123218B (en)
PL (1) PL69870B1 (en)
SE (1) SE347952B (en)
SU (1) SU361557A3 (en)
YU (1) YU32794B (en)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3839159A (en) * 1971-11-30 1974-10-01 Westinghouse Electric Corp System for concentrating a moderating solution utilized in a pressurized water nuclear power plant
US4096039A (en) * 1975-12-18 1978-06-20 Carnine Corporation Condition sensing control system for desalinator automation
US4249864A (en) * 1978-06-19 1981-02-10 Auscoteng Pty. Ltd. Centrifugal pump system for water desalinization
US4568428A (en) * 1983-07-05 1986-02-04 General Signal Corporation Method and apparatus for vacuum distillation
US4595460A (en) * 1983-09-12 1986-06-17 Hurt Charles F Method and apparatus for water distillation with energy recovery
EP0219450A1 (en) * 1985-09-13 1987-04-22 Rainer Gottberg Device for controlling vacuum
US4759825A (en) * 1985-07-25 1988-07-26 Bela Medvey Rotary evaporator
US4929312A (en) * 1988-01-27 1990-05-29 Westcott Robert D Solvent recovery apparatus and method
US5064505A (en) * 1989-08-21 1991-11-12 Borgren Peter M Low-pressure desalinization device
US5173155A (en) * 1990-09-28 1992-12-22 Tokyo Gas Co., Ltd Vacuum boiler type evaporator
US5198076A (en) * 1990-04-16 1993-03-30 Bowpec Incorporated Low-pressure desalinization device
US5217581A (en) * 1991-03-07 1993-06-08 Ewing Frank A Desalination of sea water near the critical pressure
US11278824B2 (en) 2016-06-15 2022-03-22 Russell Distillers Limited Distillation apparatus comprising a chamber for holding material to be extracted and method thereof

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3839159A (en) * 1971-11-30 1974-10-01 Westinghouse Electric Corp System for concentrating a moderating solution utilized in a pressurized water nuclear power plant
US4096039A (en) * 1975-12-18 1978-06-20 Carnine Corporation Condition sensing control system for desalinator automation
US4249864A (en) * 1978-06-19 1981-02-10 Auscoteng Pty. Ltd. Centrifugal pump system for water desalinization
US4568428A (en) * 1983-07-05 1986-02-04 General Signal Corporation Method and apparatus for vacuum distillation
US4595460A (en) * 1983-09-12 1986-06-17 Hurt Charles F Method and apparatus for water distillation with energy recovery
US4759825A (en) * 1985-07-25 1988-07-26 Bela Medvey Rotary evaporator
EP0219450A1 (en) * 1985-09-13 1987-04-22 Rainer Gottberg Device for controlling vacuum
US4929312A (en) * 1988-01-27 1990-05-29 Westcott Robert D Solvent recovery apparatus and method
WO1990011808A1 (en) * 1988-01-27 1990-10-18 Westcott Robert D Solvent recovery apparatus and method
US5064505A (en) * 1989-08-21 1991-11-12 Borgren Peter M Low-pressure desalinization device
US5198076A (en) * 1990-04-16 1993-03-30 Bowpec Incorporated Low-pressure desalinization device
US5173155A (en) * 1990-09-28 1992-12-22 Tokyo Gas Co., Ltd Vacuum boiler type evaporator
US5217581A (en) * 1991-03-07 1993-06-08 Ewing Frank A Desalination of sea water near the critical pressure
US11278824B2 (en) 2016-06-15 2022-03-22 Russell Distillers Limited Distillation apparatus comprising a chamber for holding material to be extracted and method thereof

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NO123218B (en) 1971-10-18
DE1808985B2 (en) 1973-05-17
FR1592802A (en) 1970-05-19
SE347952B (en) 1972-08-21
SU361557A3 (en) 1972-12-07
DE1808985A1 (en) 1970-12-03
DK131612C (en) 1976-01-12
JPS4927257B1 (en) 1974-07-16
BE723972A (en) 1969-05-02
NL142076B (en) 1974-05-15
GB1212215A (en) 1970-11-11
YU271868A (en) 1975-02-28
YU32794B (en) 1975-08-31
PL69870B1 (en) 1973-10-31
DK131612B (en) 1975-08-11
NL6816839A (en) 1969-05-28
ES360499A1 (en) 1970-07-16

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