Sea water desalination unit and process

FIELD: process engineering.

SUBSTANCE: invention relates to agriculture, particularly to sea water desalination and can be used for purification of sweet water. Sweet water can be produced by evaporation and condensation of water vapours in costal areas and at sea platforms. Sea water desalination includes its evaporation and condensation of water vapour. Sea water is taken separately from top warm and cold bottom layers. Note here that warm water is forced to evaporation while cold water is used for condensation of water vapour resulted from heated sea water and atmospheric air.

EFFECT: lower power and metal input, higher efficiency of desalination.

2 cl, 1 dwg

 

The invention relates to agriculture, in particular to methods and equipment for seawater desalination, and may find application in the design and creation of devices for production of purified fresh water and its use in agriculture and other fields of national economy.

By using the proposed method and device can get clean fresh water through evaporation and condensation of water vapor in coastal areas and on offshore platforms.

Known methods of desalination of sea water, including evaporation and condensation of water vapor - method of desalination of sea water by means of heat recovery and device for its implementation", containing heat exchangers, recirculating water system, heat pump, vacuum chamber, the rotating curved channels (patent RF №2359917, dated 27.06.09).

The disadvantages of this method and device are large capital and operating costs and the complexity of the design.

Known installation for fresh water running by way of evaporation and condensation of water vapor using natural cold containing a heat exchanger, condenser, ducts, hydraulic pump, placed in the lower part of the flexible hose, blower motor, a cylindrical droplet separator (�atent of the Russian Federation No. 2169237, B. I. No. 17 dated 20.06.2001).

The disadvantages of this method are the high capital and operating costs.

From the known methods and devices for desalination and water purification the closest in technical essence to the proposed invention is a device for the desalination of sea water by way of evaporation and condensation of water vapor (patent RF №2309125, publ. 27.10.07).

The known device for the desalination of sea water contains two towers of height more than 10 m, arranged on two sealed tank, manifolds, piping, cooling and heating exchangers, talkradio installation next to tanks, check valves, level gauges, evaporation tank, pumps, nozzles of the irrigation system.

The disadvantages of the known method and devices of this type are the large power consumption and metal consumption, low specific performance for seawater desalination.

The object of the invention is the reduction of power consumption, metal consumption and increased efficiency of the device for the desalination of sea water.

As a result of use of the invention it is possible to reduce power consumption, metal consumption and increase the specific capacity of the plant for the desalination of sea water.

Technical �esultat is achieved by in the proposed device for seawater desalination, condenser containing a cavity with a tubular heat exchanger, nozzle, suction tank, inlet pipe, sea water pump with filter, fresh water pump, talkradio installation and connected to the cooling heat exchanger and the heating heat exchanger that is installed in an evaporation tank, fan, fresh water tank, steam line, the control unit, condenser cavity made in the form of vertical mesh cups, culminating in the bottom of the receiving tank connected to the outlet pipe and tap with fresh water tank, the lower part of which is connected to the pump, the crane and the piping on the upper part of the condenser cavity, and on the part of the pipe entering the upper part of the condenser cavity, vertically installed nozzles, and over the condenser cavity is placed the fan, and the bottom part of the tubular heat exchanger placed in the condenser cavity, it exits above the receiving tank and is connected to a supply pipe passing through the cooling heat exchanger and then connects with a feed hose, a sea water pump and water filter installed under the sea, and the upper part of the tubular heat exchanger out of the upper part of the capacitor cavity and connects with a drain pipe � vertical pipe, connected to the insulated evaporative tank, which is equipped with solenoid valve and REKLAMNOE hole, and on the side wall of the evaporation tank in the bottom of installed sensors of the upper and lower level is electrically connected to the control unit and solenoid valve, and an evaporation tank on the top wall of the splash protector installed and a further vacuum pump connected to the steam line extending in the condenser cavity, and in the upper part of the evaporator tank installed partitions with bottom openings and bottom openings of neighboring partitions are shifted relative to each other and have a bead around the perimeter, facing up, and in the lower part of the evaporation tank is equipped with a drain pipe communicating with the vacuum valve, the pump and the check valve, and in the upper layers of sea water is an additional pump with filter, connected to a pipe and a check valve with a vertical pipe in front of solenoid valve.

The above technical result is achieved in that in the method of desalination of sea water, including the evaporation and condensation of water vapor, sea water is taken separately from the warm upper and lower cold layers, with warm water directed to the evaporation and cold water used for condensate� water vapor, derived from heated sea water and air.

The invention is illustrated by drawings, which presents the General scheme of the proposed device and method for the desalination of sea water.

The device for implementing the method of desalination of sea water contains: condenser cavity with 1 tubular heat exchanger 2, the nozzle 3, the receiving tank 4, the inlet pipe 5, sea water pump 6, a filter 7, fresh water pump 8, talkradio installation 9 and attached cooling coil 10 and the heating heat exchanger 11 mounted in an evaporation tank 12, a fan 13, fresh water tank 14, the steam pipe 15, the control unit 16, and a condenser cavity 1 is designed as a vertical mesh cups, culminating in the bottom of the receiving tank 4, connected a discharge pipe and valve 17 with the fresh water tank 14, the lower part of which is connected to the fresh water pump 8, the tap 18 and the conduit 19 with the upper part of the capacitor cavity 1, and on part of the conduit 19, which is in the upper part of the condenser cavity 1 vertically installed nozzles 3 and above condenser cavity is placed the fan 13, and the lower part of the tubular heat exchanger 2, a capacitor placed in the cavity 1, it exits above the receiving tank 4 and is connected to the supply pipe 5, �rhodesa through the cooling heat exchanger 10, and further connected with a supply hose 20, sea water pump 6 and a filter 7 for water, established under the sea, and the upper part of the tubular heat exchanger 2 out of the upper part of the capacitor cavity 1 and is connected with a drain pipe 21 and a vertical pipe 22 connected to the insulated evaporative tank 12 on which is mounted a solenoid valve 23 and REKLAMNOE hole 24 and on the side wall of the evaporation tank 12 to the bottom section of the sensor of the upper 25 and lower 26 level is electrically connected to the control unit 16 and the solenoid valve 23, and the evaporation tank 12 at the upper wall is set the demister 27 and then the vacuum pump 28 connected to the steam line 15 extending in the condenser cavity 1, and in the upper part of the evaporation tank 12 mounted partitions 29 having a bottom opening 30 and the bottom opening 30 adjacent partitions are shifted relative to each other and have a bead around the perimeter, facing upwards, and in the lower part of the insulated evaporative tank 12 is equipped with a drain pipe 31 communicating with a vacuum stopcock 32, pump 33 and check valve 34, moreover, in the upper layers of sea water is an additional pump 35, the filter 36 is connected by pipe 37 and valve 38 to the vertical tube 22 prior to electromagnetic�Apana 23.

The proposed method for the desalination of sea water contains the following sequence of operations:

1. The supply of warm water from the upper layers of sea water in the evaporator tank and receiving water vapor.

2. Cold seawater from deep layers to the cooling heat exchangers.

3. Flow of water vapor from the evaporation tank and from the air on the cooling surfaces of the condenser cavity.

4. Condensation of water vapor, the production of fresh water and pumping it to the customer.

Method for desalination of sea water is as follows. Warm sea water fed to the evaporator tank 12 from the upper auxiliary pump 35 through the filter 36, where it then further and evaporates.

Cold sea water is fed from the depths of the cold layers through the filter 7 sea water pump 6. Sea water feed hose 20 passes through the cooling heat exchanger 10 flow type associated with teleholding installing 9, and douglasdale. Further, along the feed pipe 5 cold water served in a tubular heat exchanger 2 located in the condenser cavity 1, made in the form of a mesh of glass, over which is placed the fan 13 that are automatically included with the control unit 16, with high humidity, and a drain pipe 21 her return to the sea.

Water vapor is directed into the condensate�RNA the cavity 1 in two ways: from the air, suction or injection reversing fan 13, and the vacuum pump 28 mounted above the evaporator tank 12, which is insulated sealed and painted in black color. In the lower part of the evaporation tank 12 is placed the heating heat exchanger 11 connected to teleholding installing 9, the control unit 16 and the cooling heat exchanger 10. Reheating the heated sea water in the evaporation tank 12 is made from a heat exchanger 11 and the energy obtained by dokladnie sea water in the cooling coil 10.

The design of partitions 29-shifted relative to each other bottom holes 30 having a bead around the perimeter, located in the upper part of the evaporation tank 12 ensure the complete filling of evaporated water, and, therefore, increasing the area and intensity of evaporation during filling. In the hatch on the upper wall of the evaporation tank 12 is installed demister 27, preventing the ingress of water located further in the vacuum pump 28 creates a vacuum and lowering the boiling temperature of the evaporated liquid. Water tubular heat exchanger 2 flows into the drain pipe 21, through which it falls into the sea, and in the vertical tube 22, which is equipped with solenoid valve 23 and REKLAMNOE hole 24. In the e�the same pipe 22 is served warm sea water through the pipe 37 from the auxiliary pump 35 and a filter 36, set in the warm upper layers. By command of the lower level sensor 26 of the electromagnetic valve 23 is opened and warm sea water through an adjustable REKLAMNOE the hole 24 under the action of vacuum is supplied into the inner space of the evaporation tank 12 at the top of the partitions 29, greatly increasing the surface evaporation. The residual portion of water through a drain pipe 21 is returned to the sea.

The flow of evaporated liquid in the evaporation tank 12 is terminated by a signal of the upper level sensor 25 installed in an evaporation tank 12, and is resumed by a signal of the lower level sensor 26. Water vapor enters the condenser cavity 1 from the vacuum pump 28 through an insulated steam conduit 15 and from the fan 13. Condensation occurs on the cooled surfaces of the tubular heat exchanger 2 and the surfaces of the particles of the cold desalinated liquid sprayed by nozzles 3 supplied from the fresh water tank 14 through the fresh water pump 8, the tap 18 and the conduit 19. Fresh water flows from the capacitor cavity 1 in a receiving tank 4 and flows through the outlet pipe and the valve 17 in the fresh water tank 14, where the fresh water pump 8 through the valve 18 is supplied to the consumer. When cleaning of the evaporation tank 12 brine solution is removed through the drain pipe 31 and the check valve 34 on the feather�abode or into the drainage. The pump 33 is pulsed, turning on period of the pulse at the command of the lower level sensor 26, the control unit 16 periodically freeing the plant from the salt solution. To clean the evaporator tank 12 into it periodically moves sea water. To improve the efficiency of installation of warm water from the upper layers served additional pump 35 through the filter 36 through a pipe 37, valve 38, a vertical tube 22, REKLAMNOE hole 24 in the evaporator tank 12, and an unnecessary portion on a drain pipe 21 into the sea.

The use of the device and method will significantly reduce the specific energy consumption for the desalination of sea water in comparison with known methods and devices.

1. Device for seawater desalination, condenser containing a cavity with a tubular heat exchanger, nozzle, suction tank, inlet pipe, sea water pump with filter, fresh water pump, talkradio installation and connected to the cooling heat exchanger and the heating heat exchanger that is installed in an evaporation tank, fan, fresh water tank, a steam line, a control unit, characterized in that the condenser cavity made in the form of vertical mesh cups, culminating in the bottom of the receiving tank connected to the outlet pipe and tap with fresh water tank�, the lower part of which is connected to the pump, valve and pipe from the upper part of the condenser cavity, and on the part of the pipe entering the upper part of the condenser cavity, vertically installed nozzles, and over the condenser cavity is placed the fan, and the bottom part of the tubular heat exchanger placed in the condenser cavity, it exits above the receiving tank and is connected to a supply pipe passing through the cooling heat exchanger and then connects with a feed hose, a sea water pump and water filter installed under the sea, and the upper part of the tubular heat exchanger out of the upper part of the capacitor cavity and connects with a drain pipe and a vertical pipe connected to the insulated evaporative tank, which is equipped with solenoid valve and REKLAMNOE hole, and on the side wall of the evaporation tank in the bottom of installed sensors of the upper and lower level is electrically connected to the control unit and solenoid valve, and an evaporation tank on the top wall of the splash protector installed and a further vacuum pump connected to the steam line extending in the condenser cavity, and in the upper part of the evaporator tank installed partitions with bottom openings, and bottom hole�Oia neighboring partitions are shifted relative to each other and have a bead around the perimeter, facing up, and in the lower part of the evaporator tank is equipped with a drain pipe communicating with the vacuum valve, the pump and the check valve, and in the upper layers of sea water is an additional pump with filter, connected to a pipe and a check valve with a vertical pipe in front of solenoid valve.

2. Method for desalination of sea water using the device according to claim 1, comprising the evaporation and condensation of water vapor, characterized in that the sea water is taken separately from the warm upper and lower cold layers, with warm water directed to the evaporation, and cold water is used to condense the steam produced from the heated sea water and atmospheric air.



 

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FIELD: chemistry.

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Fluid intake device // 2553287

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FIELD: chemistry.

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12 cl, 4 dwg, 2 ex

FIELD: process engineering.

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3 cl, 2 dwg, 1 ex, 1 tbl

FIELD: process engineering.

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8 cl, 6 dwg

FIELD: process engineering.

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4 cl, 1 dwg

FIELD: heat supply.

SUBSTANCE: the invention is pertaining to the field of the heat supply industry and is intended for preparation of fuel, in particular, petroleum for use in the boiler rooms being a source of a heat supply of remote settlements. The installation contains: a heater-evaporator, a heat exchanger for heating up a feed stock, the fuel feed stock pump and containers of the feed stock and collection of the light fractions. At that the installation is supplied with the second feed stock pump and three in series connected to each other heat exchangers of the light fractions condensation, the first and second feed stock pumps are connected by their inlets to a feed stock container. The outlet of the first feed stock pump is connected through the feed stock heating up heat exchanger to the heater-evaporator, which by its vapors outlet is connected to the first out of three in series connected to each other heat exchangers, the last of which is connected to its container of the light fractions condensate collection. The outlet of the second feed stock pump is connected in parallel to the heat exchangers of condensation of the light fractions and through them to the heater-evaporator. Each of heat exchangers in parallel connected to each other is supplied with a thermoregulator to keep in it a constant temperature of condensation of the light fractions vapors. The first and second of in series connected heat exchangers are connected through the placed in the feed stock container coiled pipes each to its container of the light fractions collection. The heater- evaporator through the feed stock heating up heat exchanger is connected to the container for fuel collection. In the result the invention allows to upgrade quality of the fuel preparation for the boiler plants at simultaneous production of several light fractions of the feed stock, mainly petroleum. The invention ensures improvement of the quality of the fuel preparation for the boiler plants at simultaneous separate production of several light fractions of a feed stock, mainly petroleum.

EFFECT: the invention ensures improvement of the quality of the fuel preparation for the boiler plants at simultaneous separate production of several light fractions of the feed stock, mainly petroleum.

1 dwg

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