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Title:
INSTALLATION AND PROCEDURE FOR WATER DESALINATION
Document Type and Number:
WIPO Patent Application WO/2010/151164
Kind Code:
A2
Abstract:
The invention refers to an installation for the desalination of water from seas or oceans, from where water is transported by means of pipelines in order to obtain mainly drinking water and salts. The problem solved by the invention consists in reducing the electricity consumption in a water desalination plant which works independently. fording to the invention, the sea water used as fuel for reactors is pushed, using p through a pipeline, with some electric valves mounted, into the reactor bers, through a pipeline with an electric valve mounted inside, the hot water chambers is recirculated through a cooler from where it is sucked by a pump pushed through a pipeline, with an electric valve mounted inside, into the iupply pipeline, to the upstream of electric valves mounted inside, the steam from the chambers is evacuated through a pipeline with an electric valve included, to the upstream of which there is connected the pipeline for hot water circulation, and introduced into a blade turbine and further into a heat exchanger connected to the cooler by means of a pipeline, the steam generated by the boiler is directed through some pipes into a heat exchanger of a water desalination plant.

Inventors:
MUSCALU VASILE (RO)
Application Number:
PCT/RO2009/000021
Publication Date:
December 29, 2010
Filing Date:
November 30, 2009
Export Citation:
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Assignee:
S C HELLENIC TILER INVEST SRL (RO)
MUSCALU VASILE (RO)
International Classes:
C02F1/461
Domestic Patent References:
WO2006029603A12006-03-23
WO2008113798A22008-09-25
Foreign References:
EP1908733A12008-04-09
Attorney, Agent or Firm:
POPOSCU Laurentiu (27 Camil Ressu Blvd. N1 sc. 5,Ap.214, sector 3, Bucharest 6, RO)
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Claims:
Claims

1. The water desalination plant including a water collection basin, some reactors that separate a chamber in which some central and lateral front and back electrodes are placed, supplied with electricity, from which the central electrode can be rotated and the side electrodes can be moved axially by some electric motors powered by electricity through command panels by some power generators, and the reactor is provided with some level, temperature and pressure sensors, the gas produced in chambers is aspirated by some compressors and stored in some reservoirs that supply with gas the generators and respectively a furnace of a boiler equipped with a smoke stack, in connection to which there is mounted a saver, which produces gas for the supply of the furnace, as, from the mentioned basin (1), the water is pushed, using a pump (7) through a supply pipe (10), having inside some electric valves (11), in chambers (a) of reactors (A), through a pipe (52) having inside an electric valve (53), the hot water from chambers (a) is moved through a cooler (47) from which it is sucked by a pump (49) and pushed through a pipeline (50) having inside an electric valve(51) into supply pipe (10) at the upstream of electric valves (11) mounted inside, the stream from chambers is exhausted by a pipe (41) having inside mounted an electric valve (42), upstream of which there is connected the pipe (52) through which hot water passes, and then introduced into the turbine (43) and further into a heat exchange (45) connected through a pipe (46) with the cooler (47), the stream generated by the boiler (69) is conducted through some pipes (70 and 73) to a heat exchange of the water desalination plant.

2. Procedure for the desalination of sea water, the desalination taking place in a separate plant characterized by taking sea water from a basin (1) and simultaneously pushing it with a pump (7) into chambers (a) of reactors (A) in which gas is produced, which is compressed and introduced into a furnace of a boiler (69) for preparing steam at temperature of 300...4000C, the steam is supplied by a heat exchange (74) to the water desalination plant, the thermal agent recovered from this plant is reintroduced into the boiler (69), the heat water at a temperature of 180...2500C from chambers (a) is recirculated and cooled to a temperature of 50...600C into a cooler (47) through which, when in chambers (a) steam at 250...4000C is formed, after a part of its thermal energy is yielded into a blade turbine (43) and respectively into a heat exchanger (45), the water resulting from the heat exchange (45) is moved and further reintroduced into chambers (a), and the gas has the following composition: H2, CO2, N2, O.

Description:
INSTALLATION AND PROCEDURE FOR WATER

DESALINATION

The invention refers to a water desalination plant for seas or oceans, whose water is transported by pipelines in order to obtain mainly drinking water and salts.

There are known water desalination installations which comprise some pipelines to transport raw water to several modules, in which it is evenly distributed through an axial distributor reaching some membranes from which the desalinated water is recovered by some slots in a tank , membranes being arranged radially and being situated on both sides of plates made of sintered powders, which are intended both for supporting the membranes, and for balancing the pressures on their faces, the reject being evacuated through an axial distributor and pipelines.

The disadvantages of these installations are that they have a relatively low productivity due to the use of membranes, they require a relatively important electricity and membranes consumption.

There are known water desalination procedures,, including bringing into.contact.the raw water from the sea or ocean at pressures of tens or hundreds of atmospheres with a membrane that retains salts and allows the passage of the desalinated water that is collected.

The disadvantages of these methods are that it is relatively difficult to control the technical parameters of each phase salt water is subject to, until a water with a minimum content of salts is obtained (patent no. 103235 Romania).

The problem solved by the invention consists in reducing the electricity consumption from a water desalination plant which works independently.

According to the invention, the installation removes the disadvantages stated before, as the water is pushed from a basin by a pump through a pipeline, with electric valves mounted inside the reactor chambers, through a pipe with a hot water electric valve mounted inside, and the hot water in the chambers is recirculated through a cooler, from which it is sucked by a pump and pushed through a pipeline, with an electric valve mounted inside, into the supply pipe at the upstream of the electric valves, mounted inside, the steam from the chamber being evacuated through a pipe with an electric valve mounted on the inside, upstream of which there is connected a pipe with circulation of hot water and then introduced into a blade turbine and a heat exchanger connected by a pipeline with the cooler; the steam generated by the boiler is routed through some pipes into a heat exchanger of a water desalination plant.

According to the invention, the procedure removes the disadvantages pointed out before, by the fact that sea water is taken from a basin and simultaneously pushed by a pump into the reactor chambers which produce gas from electrical discharges, which is compressed and placed in the burning point of a boiler for preparing steam at a temperature of 300 ... 400 ° C; the steam is passed through a heat exchanger of a water desalination plant, the heat recovered from this installation is reintroduced into the boiler, the hot water in the chambers is recirculated through a cooler through which, when steam at a temperature of 250 ... 400 ° C is formed in the chambers, after a part of the thermal energy of the moved steam is ceded to a blade turbine and respectively to a heat exchanger, hot water at a temperature of 50 ... 60 ° C resulting from the heat exchanger, is further conveyed through a pump and reintroduced separately into each chamber.

According to the invention, the installation and the procedure have the following advantages:

• allows obtaining drinking water from salt water with a relatively low energy;

• allows obtaining fuel gas;

• does not cause noxes and does not pollute the environment;

• the installation has a relatively simple construction and the applied method is relatively simple for supervision.

We further provide an example of achievement for the plant and procedure, according to the group of inventions in connection with Fig. 1 ... which represents:

• Fig 1., functional diagram of an installation according to the invention;

• Fig 2., saver

• Fig 3., reactor

• Fig 4., view from the top

• Fig 5., overall horizontal displacement

According to the invention, the installation is composed of a collector tank 1, in which wastewater from sewage, waste oil and sea water may be introduced. Sea water is sucked through a pipe 2 and pushed by a pump 3 through a pipe 4 having an electric valve 5 mounted into pool 1. From the latter, through pipe 6, a mixture of water is sucked by a pump 7 and pushed through a pipe 8, having included electric valves 9, into a supply pipeline 10 within which there are mounted some electric valves 11 into some reactors A. In connection with a reactor A some level, pressure and temperature sensors 12, 13 and 14 are mounted. For emptying a chamber bounded by a casing 15 of the bottom reactor A, a pipe 16 is connected thereto, in connection with a filter 17 for obtaining coal from which water is sucked through a pipe 18, having mounted an electric valve 19 by a pump 20 which pushes it into basin 1 through a pump 21.

At the top of chamber a, the generated gas is discharged through a pipe 22, passed through a filter 23 and sucked through a pipe 24, having mounted an electric valve 25 by a compressor 26, which through a pipe 27, having mounted an electric valve 28, pushes it into a tank 29 connected at the top with a pipe 30, having included an electric valve 31 with a gas collector 32, within which there are mounted some electric valves 33 and 34. In this regard, in an analysis report with number 104 04.07.2008, conducted by the National Research and Development Institute for Cryogenics and Isotopic Technologies ICSI Ramnicu-Valcea, the following results were obtained: 50.13% vol.H; 7.9% vol.CO 2 ; 1.5 % vol.O 2 ; 7.3% vol.N 2 ; 35.2% vol.H 2 0 and a dew point value -15 0 C.

The tank 29 is also connected through a pipe 35, having mounted an electric valve 36, with an electricity generator 37 which supplies a control panel for electric engines 38, a general control panel 39 and an accumulator battery 40 .

A pipe 41 is connected to casing 15, having mside an electric valve 42 which supplies steam at a temperature of 350 ... 400 ' 0 C, a xurbine 43 from which steam at a temperature of 320 ... 380 ° C is led tnrough a pipe 44 through a heat exchanger 45 resulting in hot water at a temperature of 80 ... 100 ° C and respectively hot water at a temperature of 50 ... 60 ° C, which is led by a pipe 46 to a cooler 47 from which, through a pipe 48, it is aspirated from a pump 49 and pushed through a pipe 50 having inside an electric valve 51 into pipe 10 to the downstream of electric valve 11.

When the water temperature in the reactor A does not have the prescribed value of 300 ... 400 ° C, the electric valve 42 is closed and water flows through the pipe 41 and the pipe 52 connected to it at the downstream of the electric valve 42 and having included an electric valve 53, up to pipe 46, to which it is connected at the downstream of cooler 47. The pipeline 11 has mounted inside an electric valve 54 and it is connected to another reactor A having the same construction as the first reactor, meaning that it is provided with the casing 15 which limits chamber A and inside which there are mounted the sensors 12, 13, 14. On the casing 15 there is connected the pipe 41 having mounted the electric valve 42 through which steam at a temperature of 300 ... 400 ° C is led by pipe 44 through heat exchanger 45 from which through the pipe 46 it is led into cooler 47, from which water is suctioned through the pipe 48 from pipe 49 and pushed through pipe 50, with the electric valve 51, into pipe 11.

At the bottom of casing 15 there is connected the pipe 16, which leads water through a filter 17 for retaining carbon, from which water is transferred through a pipeline 54 having inside an electric valve 55 up to the pipeline 18 at the downstream of pump 20.

If electric valve 42 is closed, steam passes through a pipe 56 having an electric valve 57 mounted, connected to pipeline 46, at the upstream of the heat exchanger 45.

From chamber a of the last reactor A, gases are collected through a pipe 58 and passed through a filter 59 being further sucked through a pipe 60 within which there is an electric valve 61 by a compressor 62, which pushes gas through a pipe 63 having an electric valve 64 mounted, into a tank 65, to which pipe 32 is connected and respectively a pipeline 66 with electric valve 67 mounted in, related to one another electricity generator that supplies panels 38 and 39 and battery accumulator 40.

Through the pipeline 32, a furnace of a boiler 69 for steam preparation at a temperature of 300 ... 400 ° C is supplied with gas, from which it is led by a pipe 70 having mounted an electric valve 71, into a turbine 72 from.which the steam is led by a pipeline 73 into a heat exchanger 74 belonging to an installation of desalination water, which not represented in figures but known automatically.

The heat recovered from water desalination is directed through a pipe 75 having mounted in an electric valve 76 in the boiler 69. From pipe 70 a small amount of steam is taken over through a pipe 77 having mounted in an electric valve 78; the steam is circulated by some savers B, in which gas is produced, which through a pipe 79 having mounted on an electric valve 80, is directed into the boiler furnace 69.

The reactor has a casing 15 which separates a chamber a in which electrodes 81, 82 and 83 are centrally and respectively laterally placed, at the back and front, and in which there are installed sensors 12, 13 and 14.

The electrode 81 is fixed to a shaft 84 preferably made of stainless steel supplied with electricity by means of brushes 85. The shaft 84 passes through the casing 15 by means of a tightening gland 86, and outside the casing 15, by spindle 84, a snail wheel 87 is fixed, which engages with a snail 88 rotated by an electric motor 89 fixed by means of screws 90 on a mobile plate 91. On the casing 15 there is fixed a vertical plate 92, to which two guides 93 and 94 are attached, along which plate 91 may be moved by means of guidance ball joints 95. A nut 96 is fixed to shaft 84, which in turn engages with a coarse thread screw 97, involved in rotational motion by an electric motor 98, supported by a horizontal plate 99 fixed to plate 92. The nut 96 is guided at the bottom by a ball coupling 100 mounted on two bars 101 attached at the sides to board 99.

Electrodes 82 and 83 are mounted on each one of the shafts 102 and 103 which are connected to a source of electricity and which cross the casing 15 through glands 104 and 105, which can be moved horizontally with one of the nuts 106 and 107 which engages with one of the coarse thread screws 108 and 109, in turn drawn in rotational motion by one of the electric engines 110 and 111. The latter are supported by one of the 112 and 113 vertical plates fixed to casing 15. The boards 112 and 113 are attached at the ends to some pairs of horizontal bars 114 and 115, that are in bottom contact with nuts 106 and 107.

Saver B consists of a tubular body 116, with a central cylindrical portion b and respectively some end curved portions c_and d. In the portion b a core 117 is disposed at the center, using some bearers 118, so that between the body 116 and core 117 there is formed an annular space e, by moving gas at a temperature of 500-600 0 C. Portions c and d are connected to the smoke stack 74.