GB2249968A - Vacuum enhanced water extraction system - Google Patents

Vacuum enhanced water extraction system Download PDF

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Publication number
GB2249968A
GB2249968A GB9025542A GB9025542A GB2249968A GB 2249968 A GB2249968 A GB 2249968A GB 9025542 A GB9025542 A GB 9025542A GB 9025542 A GB9025542 A GB 9025542A GB 2249968 A GB2249968 A GB 2249968A
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GB
United Kingdom
Prior art keywords
tank
vacuum
extraction system
stop
water extraction
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
GB9025542A
Other versions
GB9025542D0 (en
Inventor
John Hilary Bryant
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to GB9025542A priority Critical patent/GB2249968A/en
Publication of GB9025542D0 publication Critical patent/GB9025542D0/en
Publication of GB2249968A publication Critical patent/GB2249968A/en
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D5/00—Condensation of vapours; Recovering volatile solvents by condensation
    • B01D5/0057—Condensation of vapours; Recovering volatile solvents by condensation in combination with other processes
    • B01D5/006—Condensation of vapours; Recovering volatile solvents by condensation in combination with other processes with evaporation or distillation
    • B01D5/0066—Dome shaped condensation

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Extraction Or Liquid Replacement (AREA)

Abstract

A water extraction system which consists of two tanks, 1 and 2, one to hold raw material, and the other a condensation tank in which clean water collects. The vacuum, which allows evaporation at low temperatures, is achieved in the tanks by means of a tube 5 running from the top tank to a vacuum pump. An inlet for raw material, and outlets for clean water and residue are provided. 7 <IMAGE>

Description

Vacuam enhanced water extraction system Thie invention relates to the extraction, in a vacuum, of clean water, from salty on polluted water, for example sea water or industrial wate.
Is a weli known fact that clean waten can be extracted from salty or polluted water by boiling the latter and condensing the steam on a cool surface to collect the clean water. This process however, uses a lot of power realative to the amount of clean wwater poroduced, and is therefore an expensive method of extracting clean water from polluted water.
The vacuum enhanced water extraction system requires substantially less power to extract clean water from polluted water, because water evaporates at a much lower temperature in a vacuum.
The vacuum enhanced water extraction system consists of two sealed tanks, one on top of the other, and separated by a sealed vacuum.
There is an inlet for raw material, (controlled by a stop-cock valve) high up on the eide of the lower tank. Beneath the lower tank there is a chamber in which a heating device is situated, A tube leads from the upper chamber to a vacuum pump. There is a stop-cock valve to shut off this tube. A pipe passes from the lower tank up through the vacuum seal, inte the upper region of the top tamk. A pipe leaves the upper tank at floor level. This is the outlet for clean water, and has a stop-cock valve to shut it off. On top of the tank there is a means of keeping the upper tank cooler than the loweer tank, for example a retrigeration unit. There is an outlet for residue at floor level in the lower tank. There is an air inlet with a stop-cock valve high up in the side of the lower tank.
An example of the vacuum enhanced water extraction system will now be described, with reference to the accompanying drawing.
The vacuum enhanced water extraction system consists of two sealed tanks, an upper tak 1 and a lower tank 2 separated by a sealed vacuum 3 which helps to maintain the difference in temperature between the upper and lower tanks. There is an inlat 4 for raw meterial, (controlled by a stop-cock valve) high up on one side of the lower tank. A tube 5 leads from the upper tank to a vacuum pump.
There is a stop-cock valve to shut off this tube.
When the raw material is in the lower tank and the raw material inlet stop-cock valve has veen shut off, the vacuum tube stop-cock is opened, and the vacuum pump is switched on. When the pressure has been reduced to the required level the stop-cock is shut and the vacuum pump switched off.
Beneath the lower tank there is a chamber 6 in which a heating device is situated, for example, an electrie element. A pipe 7 passes from the lower tank, up through the vacuum seal, into the upper region of the upper tank.
When heat has been applied to the raw material steam rises through this pipe inte the upper tank, where it condenses into clean water, and collects on the floor of this tank.
There is en air-inlet 11 (with a stop-cock controlled valve) situated high up in the side of the lower tank.
A pipe 8 leaves the upper thank at floor level. This is the outlet for clean water, and has a stop-cock valve to shut it off. When the air iniet has been opened, after the heating and evaporation stages have been completed, the water outlet stop-cock is opened to release the water from the upper tank.
There is a means of keeping the upper tank cooler tahn the lower tank, for example a refrigeration unit 9 on topp of the top tank.
There is an outlet 10 for residue at floor level in the lower tank, for example a sealable hinged door, which would also allow access to the lower tank for cleaning.

Claims (1)

  1. Claims
    Claim 1 A vacaum enhanced water extraction system, consisting of two sealed tanks, one on top of another, with a pipe leading from the ceiling of th lower tank to the upper region of the top tank, a stop-cock controlled inlet for raw material, a sealable outlet for resides and a stop-cock controlled inlet for air, in the lower tank, and a stop-cock controlled water outlet, and a tube leading to a vacuum pump in the upper tank. The vacuum enhanced water extraction system has a means of heating the contente of the lower tank and keeping the upper tank cool.
    Claim 2 A vacuum enhansed water extraction system as in claim 1 wherein the difference in temperature between the upper and lower tanks is sugmented by a vacuum seal between the two tanks.
GB9025542A 1990-11-23 1990-11-23 Vacuum enhanced water extraction system Withdrawn GB2249968A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9025542A GB2249968A (en) 1990-11-23 1990-11-23 Vacuum enhanced water extraction system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9025542A GB2249968A (en) 1990-11-23 1990-11-23 Vacuum enhanced water extraction system

Publications (2)

Publication Number Publication Date
GB9025542D0 GB9025542D0 (en) 1991-01-09
GB2249968A true GB2249968A (en) 1992-05-27

Family

ID=10685903

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9025542A Withdrawn GB2249968A (en) 1990-11-23 1990-11-23 Vacuum enhanced water extraction system

Country Status (1)

Country Link
GB (1) GB2249968A (en)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1139238A (en) * 1966-12-07 1969-01-08 G & J Weir Ltd Water distillation plant
GB1171823A (en) * 1967-01-20 1969-11-26 G & J Weir Ltd Water Distillation Plant.
GB1541317A (en) * 1975-04-30 1979-02-28 Iguana Srl Method and apparatus for producing purified water by low temperature distillation
WO1981002154A1 (en) * 1980-01-28 1981-08-06 G Humiston A desalination apparatus with power generation
WO1983003821A1 (en) * 1982-04-27 1983-11-10 Nautical Services Pty. Ltd. De-salinator for brackish - or salt-water
US4770748A (en) * 1987-02-24 1988-09-13 Roncell, Inc. Vacuum distillation system

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1139238A (en) * 1966-12-07 1969-01-08 G & J Weir Ltd Water distillation plant
GB1171823A (en) * 1967-01-20 1969-11-26 G & J Weir Ltd Water Distillation Plant.
GB1541317A (en) * 1975-04-30 1979-02-28 Iguana Srl Method and apparatus for producing purified water by low temperature distillation
WO1981002154A1 (en) * 1980-01-28 1981-08-06 G Humiston A desalination apparatus with power generation
WO1983003821A1 (en) * 1982-04-27 1983-11-10 Nautical Services Pty. Ltd. De-salinator for brackish - or salt-water
US4770748A (en) * 1987-02-24 1988-09-13 Roncell, Inc. Vacuum distillation system

Also Published As

Publication number Publication date
GB9025542D0 (en) 1991-01-09

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Legal Events

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WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)