Device for desalting seawater by using liquefied natural gas waste cold source

Abstract

The utility model relates to the technical field of seawater desalination, and discloses a device for seawater desalination by using a liquefied natural gas waste cold source, the device comprises a machine body, a plurality of heat exchange cylinders which are circumferentially distributed are mounted in the machine body, heat exchange fins are mounted on the outer surfaces of the plurality of heat exchange cylinders, the upper end of the machine body is filled with liquefied gas, and the lower end of the machine body is filled with liquefied gas. And rotating rods are arranged in the multiple heat exchange cylinders, the outer surfaces of the multiple rotating rods are fixedly connected with multiple stirring plates distributed in the circumferential direction, and a separation frame is arranged in the machine body. According to the device for seawater desalination by using the liquefied natural gas waste cold source, sensible heat and latent heat of liquefied natural gas can be fully utilized to effectively cool pumped seawater through cooperation of the heat exchange fins and the heat exchange cylinder, and the cooled seawater can be condensed into smoothie blocks and flows into the separation frame; the ice crystals and the saline water are separated through a specific separation technology, so that pure fresh water is obtained, energy consumption can be reduced, and practicability is improved.

Description

Technical Field

[0001] This application relates to the technical field of seawater desalination, and specifically to a device for seawater desalination using the waste cold source of liquefied natural gas. Background Technique

[0002] Seawater desalination is to produce fresh water by desalinating seawater. It is an open-source incremental technology for water resource utilization, which can increase the total amount of fresh water, and is not affected by time, space and climate, and can ensure stable water supply such as drinking water for coastal residents and make-up water for industrial boilers.

[0003] Currently, seawater desalination technologies mainly include distillation method, reverse osmosis method, etc. Although these methods can effectively remove the salt in seawater, they usually have high energy consumption and relatively high treatment costs.

[0004] Traditional seawater desalination methods usually heat seawater to evaporate it, and then condense and collect fresh water, or filter seawater through a reverse osmosis membrane by a high-pressure pump. These methods all require a large amount of energy consumption. Utility Model Content

[0005] In view of the deficiencies of the prior art, this application provides a device for seawater desalination using the waste cold source of liquefied natural gas, which has the advantages of energy saving, etc., and solves the problems proposed in the background technique.

[0006] To achieve the above object, this application provides the following technical solution: A device for seawater desalination using the waste cold source of liquefied natural gas, including a machine body. A plurality of heat exchange cylinders distributed in a circular pattern are installed inside the machine body. Heat exchange fins are installed on the outer surfaces of the plurality of heat exchange cylinders. Rotating rods are provided inside the plurality of heat exchange cylinders. A plurality of stirring plates distributed in a circular pattern are fixedly connected to the outer surfaces of the plurality of rotating rods. A separation frame is provided inside the machine body. A plurality of drainage holes distributed in a circular pattern are opened on the outer surface of the separation frame.

[0007] Through the above solution, the cooperation of the heat exchange cylinder and the heat dissipation fin can quickly transfer the temperature, so that the heat in the seawater can be quickly dissipated.

[0008] Further, a partition plate is installed on the inner wall of the machine body. The partition plate and the separation frame are rotatably connected through a sealed bearing.

[0009] Through the above solution, installing the partition plate can separate the upper end and the lower end of the machine body, and prevent the liquefied gas located inside the upper end of the machine body from entering the bottom end of the machine body.

[0010] Further, the bottom ends of the plurality of heat exchange cylinders are fixedly communicated with a converging pipe. The bottom end of the converging pipe is fixedly connected with a rotating ring. The rotating ring is rotatably connected with the inner wall of the separation frame.

[0011] Through the above solution, installing the converging pipe enables the condensed low-temperature seawater in multiple heat exchange pipes to enter the separation frame, and under the centrifugal action of the separation frame, the brine inside it is separated.

[0012] Furthermore, a heat insulation layer is installed on the outer surface of the separation frame.

[0013] Through the above solution, setting the heat insulation layer can keep the temperature in the separation frame balanced, reduce heat loss, and prevent ice crystals from melting.

[0014] Furthermore, multiple rotating rods are all rotatably connected to the converging pipe through sealed bearings. At the bottom ends of multiple rotating rods, grinding wheels are fixedly connected. A grinding ring is installed on the upper surface of the separation frame, and multiple grinding wheels are all in contact with the grinding ring.

[0015] Through the above solution, the cooperation of installing the grinding wheels and the grinding ring enables the rotating rods to rotate in the heat exchange cylinder and enables multiple stirring plates to stir the seawater in the heat exchange cylinder, so that it can uniformly contact the inner wall of the heat exchange cylinder and transfer heat.

[0016] Furthermore, a first electric valve is installed on the bottom surface of the separation frame, and a second electric valve is installed at the bottom end of the converging pipe.

[0017] Through the above solution, installing the first electric valve can facilitate the discharge of ice crystals in the separation frame after separating the brine, and prevent ice crystals from remaining in the separation frame.

[0018] Furthermore, the upper ends of multiple heat exchange cylinders are fixedly communicated with a shunt pipe. The shunt pipe completely penetrates the machine body. A liquid inlet pipe is fixedly communicated with the upper end of the machine body, and a liquid discharge pipe is fixedly communicated with the bottom end of the machine body. Sealed valves are installed on the outer surfaces of the liquid inlet pipe and the liquid discharge pipe.

[0019] Through the above solution, installing the shunt pipe can shunt the seawater entering the machine body into multiple heat exchange cylinders, so that multiple heat exchange cylinders can cooperate with the liquefied gas in the machine body to cool the seawater in the heat exchange cylinders.

[0020] Furthermore, a motor is installed on the inner wall of the machine body. The output end of the motor is fixedly connected to the separation frame, and a drainage frame is installed on the inner wall of the machine body.

[0021] Through the above solution, the motor can drive the separation frame to rotate, so that the ice crystals in the separation frame are affected by the centrifugal force and the brine therein is separated to the bottom end of the machine body.

[0022] Compared with the prior art, the technical solution of the present application has the following beneficial effects:

[0023] The device for desalinating seawater by using the waste cold source of liquefied natural gas can effectively cool the pumped seawater by making full use of the sensible heat and latent heat of liquefied natural gas through the cooperation of heat exchange fins and a heat exchange cylinder. The cooled seawater can condense into ice sand blocks and flow into a separation frame, and the ice crystals and brine are separated by a specific separation technology, so as to obtain pure fresh water, thus saving energy consumption and improving practicability. Brief Description of the Drawings

[0024] Figure 1 Cross-sectional view of the overall structure of this application Figure 1 ;

[0025] Figure 2 This application Figure 1 Enlarged schematic view of the structure at A of this application;

[0026] Figure 3 Cross-sectional view of the overall structure of this application Figure 2 ;

[0027] Figure 4 Overall structure schematic diagram of this application.

[0028] In the figure:

[0029] 1. Body; 2. Heat exchange cylinder; 3. Heat exchange fins; 5. Rotating rod; 6. Stirring plate; 7. Separation frame; 8. Drainage hole; 9. Partition board; 10. Converging pipe; 11. Rotating ring; 12. Thermal insulation layer; 13. Grinding wheel; 14. Grinding ring; 15. First electric valve; 16. Second electric valve; 17. Shunt pipe; 18. Liquid inlet pipe; 19. Sealing valve; 20. Motor; 21. Drainage frame; 22. Liquid discharge pipe. Detailed Description of the Invention

[0030] Next, the technical solutions in the embodiments of this application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of this application. Obviously, the described embodiments are only a part of the embodiments of this application, rather than all the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of this application.

[0031] Please refer to Figure 1 , Figure 2 and Figure 3, a seawater desalination device using the waste cold source of liquefied natural gas in this embodiment, includes a body 1. A plurality of heat exchange cylinders 2 distributed in a circle are installed inside the body 1. Heat exchange fins 3 are installed on the outer surfaces of the plurality of heat exchange cylinders 2. Rotating rods 5 are arranged inside the plurality of heat exchange cylinders 2. A plurality of stirring plates 6 distributed in a circle are fixedly connected to the outer surfaces of the plurality of rotating rods 5. A separation frame 7 is arranged inside the body 1. A plurality of drain holes 8 distributed in a circle are formed on the outer surface of the separation frame 7. Through the cooperation of the heat exchange fins 3 and the heat exchange cylinders 2, the sensible heat and latent heat of liquefied natural gas can be fully utilized to effectively cool the pumped seawater. The cooled seawater can condense into ice sand blocks and flow into the separation frame 7. The ice crystals and brine are separated through a specific separation technology, so as to obtain pure fresh water, thereby saving energy consumption and improving practicability.

[0032] Please refer to Figure 1 , Figure 2 and Figure 3 , a partition 9 is installed on the inner wall of the body 1. The partition 9 and the separation frame 7 are rotatably connected through a sealed bearing. Installing the partition 9 can separate the upper end and the lower end of the body 1 to prevent the liquefied gas in the upper end of the body 1 from entering the bottom end of the body 1. The bottom ends of the plurality of heat exchange cylinders 2 are fixedly communicated with a converging pipe 10. The bottom end of the converging pipe 10 is fixedly connected to a rotating ring 11. The rotating ring 11 is rotatably connected to the inner wall of the separation frame 7. Installing the converging pipe 10 can enable the condensed low-temperature seawater in the plurality of heat exchange pipes to enter the separation frame 7, and under the centrifugal action of the separation frame 7, the brine inside it is separated. A heat preservation layer 12 is installed on the outer surface of the separation frame 7. Setting the heat preservation layer 12 can keep the temperature in the separation frame 7 balanced, reduce the loss of temperature, and prevent the ice crystals from melting. A first electric valve 15 is installed on the bottom surface of the separation frame 7, and a second electric valve 16 is installed at the bottom end of the converging pipe 10. Installing the first electric valve 15 can facilitate the discharge of the ice crystals in the separation frame 7 after separating the brine, and prevent the ice crystals from staying in the separation frame 7.

[0033] Please refer to Figure 1 , Figure 2 and Figure 4, multiple rotating rods 5 are all rotatably connected to the converging pipe 10 through sealed bearings. The bottom ends of multiple rotating rods 5 are all fixedly connected with grinding wheels 13. A grinding ring 14 is installed on the upper surface of the separation frame 7. Multiple grinding wheels 13 are all in contact with the grinding ring 14. The cooperation of the installed grinding wheels 13 and the grinding ring 14 enables the rotating rods 5 to rotate in the heat exchange cylinder 2 and enables multiple stirring plates 6 to stir the seawater in the heat exchange cylinder 2, so that it can uniformly contact the inner wall of the heat exchange cylinder 2 and transfer heat. The upper ends of multiple heat exchange cylinders 2 are fixedly communicated with a shunt pipe 17. The shunt pipe 17 completely penetrates through the machine body 1. The upper end of the machine body 1 is fixedly communicated with a liquid inlet pipe 18. The bottom end of the machine body 1 is fixedly communicated with a liquid discharge pipe 22. Sealed valves 19 are installed on the outer surfaces of the liquid inlet pipe 18 and the liquid discharge pipe 22. Installing the shunt pipe 18 can shunt the seawater entering the machine body 1 into multiple heat exchange cylinders 2, so that multiple heat exchange cylinders can cooperate with the liquefied gas in the machine body 1 to cool the seawater in the heat exchange cylinders. A motor 20 is installed on the inner wall of the machine body 1. The output end of the motor 20 is fixedly connected with the separation frame 7. A drainage frame 21 is installed on the inner wall of the machine body 1. The motor 20 can drive the separation frame 7 to rotate, so that the ice crystals in the separation frame 7 are affected by the centrifugal force and the brine therein is separated to the bottom end of the machine body 1.

[0034] In the device for desalinating seawater by using the waste cold source of liquefied natural gas in this embodiment, through the cooperation of the heat exchange fins 3 and the heat exchange cylinder 2, the sensible heat and latent heat of the liquefied natural gas can be fully utilized to effectively cool the pumped seawater. The cooled seawater can condense into ice sand blocks and flow into the separation frame 7. The ice crystals and brine are separated through a specific separation technology, so as to obtain pure fresh water, thereby saving energy consumption and improving practicability.

[0035] It should be noted that multiple drainage holes 8 are all conical, and the inner bottom wall of the separation frame 7 is in a slope shape.

[0036] The working principle of the above embodiment is as follows: First, the seawater from the outside enters into multiple heat exchange cylinders 2 through the shunt pipe 17. At this time, the motor 20 starts and drives the separation frame 7 to rotate and drives the grinding ring 14 to rotate. When the grinding ring 14 rotates, it can contact multiple grinding wheels 13 and drive multiple rotating rods 5 to rotate. When multiple rotating rods 5 rotate, they can stir the seawater in multiple heat exchange tubes through multiple stirring plates 6, so that it can uniformly release heat, and through the cooperation of the heat dissipation fins, the cooling of the seawater can be accelerated, so that it can condense into ice crystals. When the seawater in the heat exchange tube condenses into ice sand, the second electric valve 16 is opened, so that the ice sand enters into the separation frame 7. The ice crystals and brine can be separated through the centrifugal force of the separation frame 7, so as to obtain pure fresh water, thereby saving energy consumption and improving practicability. The separated brine can enter the bottom end of the machine body 1. At this time, the first electric valve 15 is opened, so that the ice sand flows into the drainage frame 21 and is discharged from the machine body 1.

[0037] It should be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, such that a process, method, article or device comprising a series of elements not only includes those elements but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising an..." does not exclude the presence of additional identical elements in the process, method, article or device comprising the said element.

[0038] Although the embodiments of the present application have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A device for desalinating seawater using the waste cold source of liquefied natural gas, comprising a body (1), characterized in that: A plurality of heat exchange cylinders (2) distributed in a circular pattern are installed inside the body (1). Heat exchange fins (3) are installed on the outer surfaces of the plurality of heat exchange cylinders (2). Rotating rods (5) are provided inside each of the plurality of heat exchange cylinders (2). A plurality of stirring plates (6) distributed in a circular pattern are fixedly connected to the outer surfaces of the plurality of rotating rods (5). A separation frame (7) is provided inside the body (1). A plurality of drain holes (8) distributed in a circular pattern are formed on the outer surface of the separation frame (7).

2. The device for desalinating seawater by using the waste cold source of liquefied natural gas according to claim 1, wherein: A partition plate (9) is installed on the inner wall of the body (1). The partition plate (9) is rotatably connected to the separation frame (7) through a sealed bearing.

3. The device for desalinating seawater using the waste cold source of liquefied natural gas according to claim 1, wherein: The bottom ends of the plurality of heat exchange cylinders (2) are fixedly communicated with a converging pipe (10). A rotating ring (11) is fixedly connected to the bottom end of the converging pipe (10). The rotating ring (11) is rotatably connected to the inner wall of the separation frame (7).

4. A device for desalinating seawater using the waste cold source of liquefied natural gas according to claim 1, characterized in that: A heat insulation layer (12) is installed on the outer surface of the separation frame (7).

5. A device for desalinating seawater using the waste cold source of liquefied natural gas according to claim 1, characterized in that: The plurality of rotating rods (5) are all rotatably connected to the converging pipe (10) through sealed bearings. Grinding wheels (13) are fixedly connected to the bottom ends of the plurality of rotating rods (5). A grinding ring (14) is installed on the upper surface of the separation frame (7). The plurality of grinding wheels (13) are all in contact with the grinding ring (14).

6. The device for desalinating seawater by using the waste cold source of liquefied natural gas according to claim 3, wherein: A first electric valve (15) is installed on the bottom surface of the separation frame (7). A second electric valve (16) is installed at the bottom end of the converging pipe (10).

7. A device for desalinating seawater using the waste cold source of liquefied natural gas according to claim 1, characterized in that: The upper ends of the plurality of heat exchange cylinders (2) are fixedly communicated with a shunt pipe (17). The shunt pipe (17) completely penetrates the body (1). A liquid inlet pipe (18) is fixedly communicated with the upper end of the body (1). A liquid discharge pipe (22) is fixedly communicated with the bottom end of the body (1). Sealed valves (19) are installed on the outer surfaces of the liquid inlet pipe (18) and the liquid discharge pipe (22).

8. The device for desalinating seawater by using the waste cold source of liquefied natural gas according to claim 1, wherein: A motor (20) is installed on the inner wall of the body (1). The output end of the motor (20) is fixedly connected to the separation frame (7). A drain frame (21) is installed on the inner wall of the body (1).

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