SU1669468A1 - Sea water desalination plant - Google Patents

Abstract

The invention relates to desalination devices, can be used to produce fresh water from sea and saline waters, and allows for increased reliability and simplified maintenance. The watermaker contains chambers 2 with trays 19 and 20 of fresh water and brine extraction, located in the upper part of chambers capacitors 3. Their input is connected to the seawater feed pump 6. The inlet of the vacuum compressor 8 is connected to the chambers 2. The compressor 18 is provided with an air heater 17, its output is connected to the sprays 11 installed in each chamber and connected to the outlet of the capacitors of the chambers. Trays 19 and 20 of each chamber through check valves 21 and 25, recuperative heat exchangers 13 and 14 are connected to the outlet of the chamber capacitors. The output of the vacuum compressor 8 is connected to a recuperative heat exchanger 30 installed in the seawater supply line to the condensers 3. The chambers 2 are mounted on top of each other in a package 1. The output 31 of the heat exchanger 30 can be connected to the inlet 32 of the compressor 18, and the atmosphere is connected through check valve with this inlet. The check valves 21 and 25 can be plate-shaped with locking elements of resilient material. The supply of the compressor 8 should be greater than the supply of the compressor 18. The heat exchanger 30 can be made in the form of a radiator that is blown from the compressor 8. The condensers 3 can be made of tubular type, with fins, etc. 2 Il.

Description

The bar 30 can be connected to the inlet 32 of the compressor 18, and the atmosphere is connected through a non-return valve to this inlet. The check valves 21 and 25 can be plate-shaped with locking elements of resilient material. Innings

the compressor 8 should be greater than the supply of the compressor 18. The heat exchanger 30 can be made in the form of a radiator that is blown from the compressor 8. The condensers 3 can be made of tubular type, with fins, etc. 2 Il.

The invention relates to desalination devices and can be used to produce fresh water from sea and saline waters.

The aim of the invention is to increase reliability and simplify maintenance.

FIG. 1 is a schematic diagram of a desalination plant of sea water; Fig. 2 is a block of desalination chambers.

The watermaker contains a block of 1 chambers 2, located one above the other and having the same design (see Figures 1 and 2). In the upper part of the chambers are installed capacitors 3. in series through pipes 4 interconnected. The input of the capacitors through the pipeline 5 is connected to the pump 6 supply of the original sea water from the pool 7 (see figure 1). The watermaker is also equipped with a vacuum compressor 8 connected by lines 9 with all chambers 2. Separators or moisture separators 10 are installed at the inlet of these lines (see Figs. 1 and 2). The chambers 2 are equipped with sprayers 11, each of which has a mixing chamber and two entrances. The first inputs of the nozzles through pipelines 12, recuperative heat exchangers 13 and 14, the pipe 15 is connected to the outlet of the condensers 3 chambers 2 of the unit 1. The second inputs of the nozzles through line 16 and the air heater 17 are connected to the compressor 18. The pipelines 5,15 and 12 and pipes 4 are are a source water supply line.

Each chamber 2 has a tray 19 of the selection of fresh water and tray 20 of the selection of brine. The trays 19 of the selection of fresh water are located under the condensers 3 and through check valves 21, lines 22, heat exchanger 14. line 23 is connected in parallel with the collection 24 of fresh water. The trays 20 for the pickling of brine through check valves 25, lines 26, heat exchanger 13, line 27 are connected in parallel to collector 28. The output of the vacuum compressor 8 is connected via pin 29 to a recuperative heat exchanger 30 installed in the seawater supply line and a condenser 3. Chambers 2

can be arranged arbitrarily in relation to each other.

In order to increase the heat and energy efficiency, the output 31 of the heat exchanger 30 can be connected to the inlet 32 of the compressor 18, and the atmosphere is connected via a non-return valve to this inlet (not shown in Fig. 1).

Check valves 21 and 25 can be

made of disc with locking elements of elastic material (rubber, etc.). The supply of the compressor 8 should be greater than the supply of the compressor 18. The heat exchanger 30 can be made in the form of a radiator, blown from the compressor 8. The condensers 3 can be made of tubular type with ribs welded to the walls, etc.

Seawater Desalination Works

in the following way.

Sea water from the pool 7 is pumped through the pipeline 5 to the block 1 of the chambers 2, successively passing through all the capacitors 3 of these chambers and further along

pipe 15. to heat exchangers 13. pipe 12 enters the mixing chambers of the nozzles 11. At the same time, the compressor 18 through the heater 17 through the lines 16

The hot air is where the heat exchange and mixing of the water / air mixture takes place. Fine mixture through the spray 11 enters the chamber 2, to which is connected via line 9

vacuum compressor 8. This compressor creates a reduced pressure in chamber 2, as a result of which the water from the water-air mixture partially evaporates, and partially in the form of brine, it settles on the walls of the chambers and

falls into trays 20 for brine. The resulting steam enters the condensers 3, transfers its heat to seawater, condenses and enters the trays 19 for fresh water.

5Passol and fresh water respectively

from trays 20 and 19, through check valves 25 and 21, via lines 26 and 22, go to heat exchangers 13 and 14, where they transfer the rest of their heat to the sea in the water supplied to them through pipeline 15. The check valves 25 and 21 prevent brine from entering and fresh water through lines 26 and 22 to trays 20 and 19. Moisture separators 10 separate the water particles from the air, which through line 9 by compressor 8 is supplied to heat exchanger 30, preheating the seawater.

The water supplied by the pump 6 is sequentially heated first in the heat exchanger 30, condensers 3, heat exchangers 13 and 14, and finally in the mixing chambers of the nozzles 11, which ensures a fairly high heat and energy efficiency of the desalination plant.

Thus, the use of the invention allows to increase the reliability of the desalination plant, since here the failure of one or several cameras does not lead to the failure of the entire desalination plant. The heater heats up not seawater, but air, which reduces the possibility of scale formation and thereby increases reliability and simplifies the maintenance of the desalination plant.

The same design of all chambers, the ability to turn off one or more chambers for routine inspection or repair during the operation of the watermaker makes it easier to maintain. Arbitrary installation of cameras, for example, in a vertical package reduces the area occupied by the desalination plant. Connecting the output of the vacuum compressor to the heat exchanger included in the supply line

Claims (1)

water to the block of chambers increases its heat and power efficiency. Claims of seawater desalination, containing installed one above the other chambers with trays of fresh water and brine, connected to the relevant collections, source water supply line with a pump, series-connected condensers placed in the chambers and sprays installed in each chamber, recuperative a heat exchanger installed on the source water supply line and connected to the freshwater extraction trays, a chamber evacuation device, a compressor, technological lines and return valves. apana of m and l h a- and w u and in that, in order to increase the reliability and ease of maintenance, it is provided with the air heater connected in parallel with the output of airbrushes. and an inlet with a compressor, and an additional recuperative heat exchanger installed on the source water supply line and connected to the brine selection trays, while the condensers are placed above the fresh water selection trays in the upper part of the chamber, the sprayers and the trays are connected respectively to the source water supply line and through non-return valves are parallel to collectors, and the chamber vacuuming device is designed as a vacuum compressor with a recuperative heat exchanger installed on the source water supply line. fig 2 15