CN216549708U - Energy storage type seawater desalination device - Google Patents

Abstract

The utility model relates to the technical field of seawater desalination, in particular to an energy storage type seawater desalination device, which comprises a first box body for holding seawater for humidification, a plurality of flue gas pipelines for flue gas to flow, a condensation structure and a gas transmission pipeline, wherein the condensation structure is connected with the first box body and is used for condensing water vapor carried by air; the flue gas pipeline is arranged in the first box body; one end of the gas transmission pipeline is positioned below the liquid level of the first box body, and the other end of the gas transmission pipeline extends out of the first box body. The utility model utilizes the ship flue gas waste heat and wind energy complementary drive to prepare the fresh water, the heat source is easy to obtain, a large amount of energy can be saved, and the fresh water is directly formed by condensing water vapor, has high purity and low salt content and better meets the edible standard.

Description

Energy storage type seawater desalination device

Technical Field

The utility model relates to the technical field of seawater desalination, in particular to an energy storage type seawater desalination device.

Background

At present, the methods adopted by seawater desalination at home and abroad mainly comprise a distillation method, an electrodialysis method, a reverse osmosis method and the like. In most modern ships, the seawater desalination plant adopts a distillation method or a reverse osmosis method. The distillation method has the advantages that the cooling water of the main engine cylinder sleeve can be used as a heating heat source of the seawater desalination device, the waste heat of the cylinder sleeve water of a part of ship main engine can be recovered, the economy of a ship power device is improved, the stability of the distillation device is good, water can be continuously produced according to rated capacity as long as the heat balance parameters are kept or close to the design conditions, and even if the heat balance conditions are seriously deviated from normal values, the distiller can still produce fresh water meeting the water quality requirement; but the distillation method is high in seawater desalination equipment, high in manufacturing cost and high in energy consumption, and is only suitable for large ships.

The reverse osmosis technology is the most advanced and energy-saving and effective membrane separation seawater desalination technology at present, and the principle is that under the action of the osmotic pressure higher than the solution, substances and water are separated according to the fact that other substances cannot permeate a semipermeable membrane. The reverse osmosis membrane has a membrane aperture of only about 10A, so that dissolved salts, colloids, microorganisms, organic matters and the like in water can be effectively removed, and the reverse osmosis membrane has the advantages of good water quality, low energy consumption, no pollution, simple process, simplicity and convenience in operation and the like. However, since the reverse osmosis needs to overcome osmotic pressure, the seawater needs high pressure when permeating the reverse osmosis membrane, and the energy consumption is mainly consumed, an energy recovery device is required to be additionally arranged on a pipeline for discharging concentrated water in general large reverse osmosis equipment so as to save energy consumption and reduce operation cost, the technology is complicated and cannot be widely used due to low cost, the water quality of the product is generally more than 50mg/L, and therefore, the technology is suitable for civil or common industrial markets, and the utilization rate is difficult to further improve in the ship industry.

Most of seawater desalination devices adopting a distillation method or a reverse osmosis technology are equipped on large ships, small and medium ships are rarely equipped with seawater desalination devices suitable for the large ships, and the traditional ship seawater desalination devices occupy large areas, occupy limited space at the bilge, are high in manufacturing cost, have certain potential safety hazards, and are poor in fresh water transportation and storage effects, so that sailing is influenced.

The inventor finds that the exhaust gas waste heat of the ship accounts for 28.7% of the total energy of the main diesel engine of the ship through a large amount of literature research, and besides the waste heat with the exhaust gas temperature of 300 ℃, the waste heat energy with the exhaust gas temperature of only 80 ℃ can be recycled. Therefore, the inventor provides a creation that the flue gas waste heat generated in the ship is applied to seawater desalination, and the flue gas waste heat is used for driving a seawater desalination device based on the principle of air temperature rise humidification and temperature reduction and moisture precipitation.

The seawater desalination device comprises a seawater inlet, a secondary cooling device, a seawater storage tank, an evaporation part, a flue gas pipeline, a seawater heating part, a reverse funnel-shaped device, a cooling part, a seawater storage tank and a seawater desalination device. Although the seawater desalination device utilizes the ship waste heat and saves energy consumption, the ship waste heat is utilized to directly heat the seawater to form steam, the requirement on the temperature of the ship waste heat is high, and the full utilization of low-temperature waste heat energy is not facilitated.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problems that the traditional ship seawater desalination device in the prior art is complex in structure, large in size, high in manufacturing cost, not suitable for small and medium-sized ships and cannot fully utilize waste heat, and provides the energy storage type seawater desalination device which is compact in structure arrangement, low in manufacturing cost, energy-saving, environment-friendly and high in energy utilization rate, and utilizes ship flue gas waste heat and wind energy for complementary driving.

In order to solve the technical problems, the utility model adopts the technical scheme that: an energy storage type seawater desalination device comprises a first box body for holding seawater for humidification, a plurality of flue gas pipelines for flue gas to flow, a condensation structure and a gas transmission pipeline, wherein the condensation structure is connected with the first box body and is used for condensing water vapor carried by air; the smoke pipeline is arranged in the first box body; one end of the gas transmission pipeline is positioned below the liquid level of the first box body, and the other end of the gas transmission pipeline extends out of the first box body.

According to the utility model, flue gas with heat is introduced into the flue gas pipeline, heat exchange is carried out in the flowing process of the flue gas in the flue gas pipeline, seawater for humidification in the first box body is heated, outside air enters the gas transmission pipeline and flows into the seawater for humidification, the air is heated in the seawater for humidification, based on the principles of air temperature rise, humidification and temperature reduction and dehumidification, the heated air can take away fresh water in the seawater, and then the air with water vapor can be cooled through the condensation structure to successfully obtain the fresh water. The utility model has simple integral structure and low cost, saves a large amount of energy and improves the energy utilization rate by making fresh water by utilizing the heat in the flue gas, and the fresh water is directly condensed by vapor, has high purity and low salt content and better meets the edible standard.

Preferably, the condensation structure comprises a second tank for holding seawater for condensation and a condensation pipe; the second box body is connected with the first box body; one end of the condensation pipe extends to the position above the liquid level of the first box body, and the other end of the condensation pipe penetrates through the second box body.

Preferably, one end of the gas pipeline extending out of the first box body is provided with fan blades.

Preferably, a heat insulating layer is arranged between the first tank and the second tank.

Preferably, an isolation cavity is arranged in the first box body; energy storage materials are filled in the isolation cavity; the flue gas pipeline is arranged in the isolation cavity.

Preferably, the flue gas pipeline is a straight pipe, a coiled pipe or a bent pipe.

Preferably, the outer wall of the second box body is provided with a plurality of radiating fins.

Preferably, the first box and the second box are of an integrally formed structure.

Preferably, the material of the heat insulation layer is asbestos.

Preferably, the energy storage material is paraffin.

Compared with the prior art, the utility model has the beneficial effects that:

1) the utility model has simple and compact integral structure, low manufacturing cost and simple production and preparation, does not need to occupy larger placing area, and can be suitable for small and medium-sized ships;

2) the method for preparing the fresh water by using the waste heat of the ship flue gas has the advantages that the heat source is easy to obtain, and the fresh water is prepared without additionally consuming energy in the process, so that a large amount of energy is saved, and the energy utilization rate is improved; the fresh water is directly condensed by water vapor, so that the purity is high, the salt content is low, and the fresh water better meets the edible standard;

3) the energy storage material is arranged, so that redundant energy in the ship flue gas waste heat can be stored in the energy storage material, and the energy storage material can release heat for seawater and fresh water under the condition that no flue gas is generated or less flue gas is generated during ship berthing, so that the effects of wind-free heat storage and wind-heat generation for water production can be realized, and further, the high-aging seawater desalination of the ship can be realized;

4) the utility model utilizes wind energy to accelerate air flow and improve the efficiency of seawater desalination, and the fan blades are arranged at the inlet of the gas transmission pipeline, so that the wind speed can be increased, the inlet airflow can be changed, the air flow can be enhanced, and the air entering the device can be effectively promoted to prepare fresh water.

Drawings

FIG. 1 is a schematic diagram of the internal structure of an embodiment 1 of the energy storage type seawater desalination apparatus of the present invention;

FIG. 2 is an enlarged view at A in FIG. 1;

FIG. 3 is a schematic diagram of the internal structure of an energy storage type seawater desalination apparatus according to embodiment 2 of the present invention;

fig. 4 is a schematic structural diagram of a flue gas pipeline in embodiment 3 of the energy storage type seawater desalination apparatus of the present invention.

In the drawings: 1-a first box; 11-a first via; 12-a second via; 2-flue gas pipeline; 3-a condensation structure; 31-a second box; 311-fourth via; 312-a fifth via; 32-a condenser tube; 4-a gas pipeline; 41-fan blades; 42-a third via; 5-isolating the cavity; 51-an energy storage material; 52-a separator; 6-heat insulating layer; 7-radiating fins.

Detailed Description

The drawings are for illustrative purposes only and are not to be construed as limiting the patent; for the purpose of better illustrating the embodiments, certain features of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted. The positional relationships depicted in the drawings are for illustrative purposes only and are not to be construed as limiting the present patent.

The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar components; in the description of the present invention, it should be understood that if there are terms such as "upper", "lower", "left", "right", "long", "short", etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the drawings, it is only for convenience of description and simplicity of description, but does not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, the terms describing the positional relationships in the drawings are only used for illustrative purposes and are not to be construed as limitations of the present patent, and specific meanings of the terms may be understood by those skilled in the art according to specific situations.

The technical scheme of the utility model is further described in detail by the following specific embodiments in combination with the attached drawings:

example 1

Fig. 1-2 show an embodiment of an energy storage type seawater desalination apparatus, which includes a first box 1, a flue gas pipeline 2, a condensation structure 3, and a gas transmission pipeline 4; the sea water for the humidification is placed in the first box body 1, the sea water for the humidification is the sea water to be desalinated, the flue gas pipeline 2 is used for supplying ship flue gas to flow, a heat source is provided for the sea water for the humidification through ship flue gas waste heat, the gas transmission pipeline 4 is used for transmitting external air to the sea water for the humidification in the first box body 1, based on the principle that air is heated, humidified and separated from humidity through cooling, the air is heated and heated in the sea water for the humidification, the water vapor of the sea water for the humidification can be taken away, and the water vapor in the air is condensed through the condensation structure 3, so that the fresh water in the sea water can be successfully obtained.

Specifically, set up in the first box 1 and kept apart the chamber 5, this keep apart chamber 5 and keep apart with first box 1 through baffle 52, and baffle 52 adopts the aluminum alloy to make in this embodiment, keeps apart the intracavity 5 intussuseption and is filled with energy storage material 51, and energy storage material 51 chooses for use paraffin, and this place is not the restrictive regulation, and other materials that can carry out the energy storage can all.

The flue gas pipelines 2 are arranged in a plurality of numbers and penetrate through the isolation cavity 5 at intervals, in the embodiment, the flue gas pipelines 2 are straight pipes, and the side wall of the first box body 1 is provided with first through holes 11 for the flue gas pipelines 2 to penetrate in or out; in this embodiment, the flue gas pipeline 2 is made of copper tubes, and other metal tubes with good thermal conductivity can be selected.

The boats and ships flue gas is from getting into first box 1 through flue gas pipeline 2, the boats and ships flue gas is at the in-process that flows through flue gas pipeline 2, accessible boats and ships flue gas waste heat heating energy storage material 51, energy storage material 51 is heated the back and gives the sea water for the humidification again with heat transfer, realize the purpose of heating sea water for the humidification, this place energy storage material 51 set up can get up unnecessary energy storage in the boats and ships flue gas waste heat, under the less condition of boats and ships flue gas, also can release heat heating sea water for the humidification, and then can continue to desalt the sea water and prepare fresh water.

The gas transmission pipeline 4 is at least provided with one, in the embodiment, the gas transmission pipeline 4 is provided one by one, specifically, one end of the gas transmission pipeline 4 is positioned outside the first box body 1 and is communicated with the outside air, the other end of the gas transmission pipeline passes through the side wall of the first box body 1 and extends to the position below the liquid level of the seawater for humidification of the first box body 1, and the side wall of the first box body 1 is provided with a third through hole 42 for the gas transmission pipeline 4 to pass through.

The air in the external atmosphere can flow into the seawater for humidification in the first box body 1 through the air transmission pipeline 4, as an optimal scheme, one end of the air transmission pipeline 4 located in the external atmosphere is provided with the fan blade 41, the fan blade 41 rotates through the driving of the motor, the fan blade 41 is a universal fan blade, the setting of the fan blade 41 can increase the air speed, the inlet air flow is changed, the air flow is enhanced, the external air is effectively promoted to enter the first box body 1, and the efficiency of seawater desalination can be improved.

Based on the air intensification humidification and the wet theory of cooling out, the air that gets into in the first box 1 is heated, and the fresh water vapor of air after the heating can take away the fresh water vapor in the sea water, carries the air of vapor and passes through behind the condensation structure 3 condensation, can successfully prepare fresh water.

The condensation structure 3 is used for condensing the vapor that the air carried, it is concrete, the condensation structure 3 includes second box 31 and condenser pipe 32, the second box 31 sets up the lateral wall at first box 1, be equipped with heat insulation layer 6 between first box 1 and the second box 31, be equipped with heat insulation layer 6 between the lateral wall that first box 1 and second box 31 contact, heat insulation layer 6 accessible bonds or other modes are fixed on the lateral wall of first box 1, asbestos is selected for use to heat insulation layer 6 in this embodiment, this place is not the restriction regulation, also other materials that have adiabatic function of selecting for use, the heat of the interior humidification of the reducible first box 1 of heat insulation layer 6 is lost with the heat of sea water.

Seawater for condensation is placed in the second box body 31, namely, seawater with lower temperature is used as condensate water, in the embodiment, the condenser pipe 32 is made of copper tubes, the condenser pipe 32 is arranged in the second box body 31 in a snake shape so as to thoroughly and fully condense water vapor carried by air, the inlet end of the condenser pipe 32 extends out of the second box body 31 and extends into the first box body 1 to be positioned above the liquid level of the seawater for humidification, the outlet end of the condenser pipe 32 extends out of the second box body 31, and the side wall of the first box body 1 is provided with a second through hole 12 for the condenser pipe 32 to extend into; the second casing 31 is provided with a fourth through hole 311 through which an inlet end of the condensation duct 32 extends, and a fifth through hole 312 through which an outlet end of the condensation duct 32 extends, respectively.

As preferred scheme, first box 1 and second box 31 can set up to the integrated into one piece structure for overall structure sets up simplyr, and the production and processing of being convenient for, the lateral wall of second box 31 is equipped with a plurality of radiating fin 7, and the setting of radiating fin 7 is convenient for second box 31 to carry out faster heat dissipation.

The specific working principle of the utility model is as follows: the ship can produce a large amount of boats and ships flue gas when navigation, the boats and ships flue gas that will produce lets in flue gas pipeline 2, the boats and ships flue gas flows the in-process in flue gas pipeline 2 and carries out the heat exchange, heat energy storage material 51, energy storage material 51 heats the sea water for the humidification in the first box 1, redundant heat is stored in energy storage material 51 simultaneously, flabellum pivoted in-process on the gas transmission pipeline 4 can introduce the external air to the gas transmission pipeline 4, and flow to in the sea water for the humidification, the air is heated in the sea water for the humidification, based on the principle of air intensification humidification and cooling dehumidification, the fresh water in the sea water can be taken away to the air that is heated, the air that subsequently has vapor passes through condenser pipe 32 and gets into second box 31 and condenses, vapor in the air can successfully obtain fresh water after the condensation.

The utility model has simple and compact integral structure, does not need to occupy larger placement area, prepares fresh water by utilizing the complementary driving of the ship flue gas waste heat and the wind energy, has easy obtainment of heat source, saves energy, can realize zero pollution and zero emission to the environment, can also save the cost for transporting the fresh water, is directly formed by condensing water vapor, has high purity and less salt content, and better accords with the edible standard.

Example 2

Fig. 3 shows another embodiment of an energy storage type seawater desalination apparatus, which is different from embodiment 1 in that: in this embodiment, two gas transmission pipelines 4 are arranged and respectively located at two sides of the isolation cavity 5, and the condensation structures 3 are arranged in two groups and respectively located at two sides of the first box body 1, so that the seawater desalination efficiency of the device can be further improved.

Example 3

Fig. 4 shows another embodiment of an energy storage type seawater desalination apparatus, which is different from embodiment 2 in that: flue gas pipeline 2 also can set up to the bellows in this embodiment, can prolong the distance that boats and ships flue gas flowed through in flue gas pipeline 2 through setting up like this, and then can improve the dwell time of boats and ships flue gas in flue gas pipeline 2 for boats and ships flue gas waste heat can be by abundant heat transfer utilization.

It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims (10)

1. An energy storage type seawater desalination device is characterized in that: the device comprises a first box body (1) for placing seawater for humidification, a plurality of flue gas pipelines (2) for flue gas to flow, a condensation structure (3) connected with the first box body (1) and used for condensing water vapor carried by air, and a gas transmission pipeline (4); the flue gas pipeline (2) is arranged in the first box body (1); one end of the gas transmission pipeline (4) is positioned below the liquid level of the first box body (1), and the other end of the gas transmission pipeline extends out of the first box body (1).

2. The energy storage type seawater desalination device of claim 1, wherein: the condensation structure (3) comprises a second box body (31) for placing seawater for condensation and a condensation pipe (32); the second box body (31) is connected with the first box body (1); one end of the condensation pipe (32) extends to the position above the liquid level of the first box body (1), and the other end of the condensation pipe penetrates through the second box body (31).

3. The energy storage type seawater desalination device of claim 2, wherein: one end of the gas transmission pipeline (4) extending out of the first box body (1) is provided with fan blades (41).

4. The energy storage type seawater desalination device of claim 2, wherein: and a heat insulation layer (6) is arranged between the first box body (1) and the second box body (31).

5. The energy storage type seawater desalination device of claim 1, wherein: an isolation cavity (5) is arranged in the first box body (1); the isolation cavity (5) is filled with an energy storage material (51); the flue gas pipeline (2) is arranged inside the isolation cavity (5).

6. The energy storage type seawater desalination device of claim 1 or 5, wherein: the flue gas pipeline (2) is a straight pipe, a coiled pipe or a bent pipe.

7. The energy storage type seawater desalination device of claim 2, wherein: the outer wall of the second box body (31) is provided with a plurality of radiating fins (7).

8. The energy storage type seawater desalination device of claim 2, wherein: the first box body (1) and the second box body (31) are of an integrally formed structure.

9. The energy storage type seawater desalination device of claim 4, wherein: the heat insulation layer (6) is made of asbestos.

10. The energy storage type seawater desalination device of claim 5, wherein: the energy storage material (51) is paraffin.

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