Cleaning and filtering equipment for cooling water in MTO methanol feeding device

Abstract

The utility model discloses cleaning and filtering equipment for cooling water in an MTO methanol feeding device, and belongs to the technical field of filtering. The oil-water separator comprises a filter box and an oil-water separator body. Water enters the filter tank through the water inlet, solid impurities in the water are filtered by the filter screen, the water filtered by the filter screen enters the oil-water separator through the pipeline I for oil-water separation treatment, oil in the water is removed, and the water separated by the oil-water separator enters the water storage tank through the pipeline II for storage.

Description

Technical Field

[0001] The present application relates to the field of filtration technology, and in particular to a cleaning and filtration device for cooling water in an MTO methanol feeding device. Background Art

[0002] Methanol enters the methanol buffer tank, is pressurized by the methanol raw material pump, and then is heat exchanged to 100°C through the heat extractor, methanol-purified water heat exchanger and methanol-condensate heat exchanger in the reactor, and then is divided into three routes: the first route is heat exchanged through the methanol-stripping gas heat exchanger; the second route is heat exchanged through the methanol-steam heat exchanger to vaporize the methanol; the third route is pressurized by the methanol booster pump and atomized through the atomizing nozzle, mixed with the vaporized methanol from the first two routes before the methanol-reaction gas heat exchanger, and then enters the methanol-reaction gas heat exchanger to fully exchange heat with the high-temperature reaction gas from the reactor to recover high-temperature heat. The methanol after heat exchange is mixed with low-pressure superheated steam to about 250°C and enters the reactor feed distributor.

[0003] In order to save energy and protect the environment, the MTO methanol feeding device can use the purified water at the bottom of the quench tower as cooling water to cool the equipment with higher operating temperature, thereby reducing the operating temperature of the equipment and extending the service life of the equipment. Water pipes are laid on the equipment and cooling water is passed through the water pipes to cool the equipment. However, the purified water from the bottom of the quench tower usually has a high solid content and carries oil, which can easily clog the water pipes. Therefore, a device is needed to remove solid impurity particles and oil in the purified water. Utility Model Content

[0004] The purpose of this application is to address the above-mentioned problems existing in the prior art and to propose a cleaning and filtering device for cooling water in an MTO methanol feeding device.

[0005] The present application can be implemented through the following technical scheme: A cooling water cleaning and filtering device in an MTO methanol feeding device, comprising a filter box and an oil-water separator. The filter box is provided with a water inlet, and a filter screen is provided inside the filter box, and the filter screen is used to filter solid impurities in the water; the water inlet of the oil-water separator is connected to the inside of the filter box through a pipe 1, and the filtered water can enter the oil-water separator through a pipe 1, and the water outlet of the oil-water separator is connected to a water storage tank through a pipe 2.

[0006] In the above technical solution, water enters the filter box through the water inlet, the filter screen filters the solid impurities in the water, the water filtered by the filter screen enters the oil-water separator through pipe one for oil-water separation treatment to remove the oil in the water, and the water separated by the oil-water separator enters the water storage tank through pipe two for storage.

[0007] Furthermore, a heater is provided in the filter box, and the heater is used to heat the filter.

[0008] In the above technical solution, since there is some oil in the water, during the process of filtering water by the first filter screen, the oil will adhere to the filter screen. In winter, the oil will solidify on the filter screen, thereby accelerating the speed of filter screen blockage. By setting a heater, the temperature inside the filter tank is increased, reducing the possibility of the filter screen being blocked due to oil solidification in winter.

[0009] Further, the filter screen is cylindrical and vertically placed, the first pipeline is installed at the bottom of the filter tank, and the water inlet is opened on the side wall of the filter tank.

[0010] In the above technical solution, compared with using a plate-shaped filter screen, due to its cylindrical structure, the cylindrical filter screen can provide a larger filtering area in the same space, thereby improving the filtering efficiency.

[0011] Further, the filter tank includes a box body with an upper opening and a cover plate hinged to the box body.

[0012] In the above technical solution, the cover plate can be opened to clean the filter screen in the filter tank. After cleaning, the cover plate can block the opening of the box body to prevent external impurities from entering the inner side of the filter screen.

[0013] Further, a flow sensor capable of detecting the liquid flow rate in the first pipeline is provided on the first pipeline. An alarm is provided on the filter tank. The alarm is electrically connected to a controller, and the controller is electrically connected to the flow sensor. When the liquid flow rate in the first pipeline reaches a preset value, the alarm can issue an alarm. A liquid inlet pipe is installed at the water inlet, and a valve is installed on the liquid inlet pipe.

[0014] In the above technical solution, workers can preset the flow rate value in the first pipeline when the filter screen is blocked. When the flow rate value detected by the flow sensor is the preset value, the alarm can be controlled to issue an alarm. At this time, it indicates that the filter screen is blocked, reminding workers that the filter screen needs to be replaced.

[0015] Further, a concave surface is formed at the bottom of the filter tank, and the first pipeline is located at the lowest point of the concave surface.

[0016] In the above technical solution, the concave surface can make the water in the filter tank leave the filter tank more fully.

[0017] Further, a square through hole is opened on the side wall of the filter screen. The through hole is used for a through rod to pass through. Two sliders are slidably installed on the through rod. The two sliders can slide in the radial direction of the through rod. A spring for forcing the sliders to extend relative to the through rod is provided in the through rod. Two fixing blocks are also formed on the through rod. The fixing blocks can abut against the outer side wall of the filter screen, and the sliders can abut against the inner side wall of the filter screen. One end of the through rod in the length direction away from the sliders is installed with a support plate, and the support plate can abut against the inner wall of the filter tank to make the filter screen fixed relative to the filter tank.

[0018] In the above technical solution, after the penetration rod is penetrated into the penetration hole, the slider can abut against the inner wall of the filter, the fixing block can abut against the outer wall of the filter, and the support plate can support the filter, so that the filter is fixed in the filter box more stably.

[0019] Furthermore, a rubber ring is installed at one end of the filter screen close to the ground, and a slope is formed at one end of the rubber ring away from the filter screen. The slope of the slope is consistent with the slope of the concave surface, and the slope can fit the concave surface everywhere.

[0020] In the above technical solution, the rubber ring can improve the sealing performance between the filter screen and the bottom surface of the filter box, and the inclined surface can make the rubber ring fit more closely with the concave surface, thereby achieving a better sealing effect.

[0021] To sum up, the present application has the following technical effects: water enters the filter box through the water inlet, the filter screen filters the solid impurities in the water, the water filtered by the filter screen enters the oil-water separator through pipe one for oil-water separation treatment to remove the oil in the water, and the water separated by the oil-water separator enters the water tank through pipe two for storage. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of this application;

[0023] Figure 2 It is a schematic diagram of the location of the concave surface in this application;

[0024] Figure 3 is a schematic diagram of the location of the heater in this application;

[0025] Figure 4 It is a schematic diagram of the position of the spring in this application.

[0026] Description of reference numerals:

[0027] 1. Filter box; 11. Box body; 111. Water inlet; 112. Concave surface; 12. Cover plate; 2. Filter screen; 21. Through hole; 3. Oil-water separator; 4. Pipeline 1; 5. Pipeline 2; 6. Water storage tank; 7. Heater; 71. Box body; 72. Pipeline; 8. Flow sensor; 9. Alarm; 10. Controller; 13. Liquid inlet pipe; 14. Valve; 15. Through rod; 16. Slider; 17. Spring; 18. Fixing block; 19. Support plate; 20. Rubber ring; 22. Inclined surface. DETAILED DESCRIPTION

[0028] Please refer to the attached drawings in the instruction manual. Figure 1 and Figure 2, an embodiment of the present application provides a cleaning and filtering device for cooling water in an MTO methanol feeding device, including a filter box 1. The filter box 1 includes a box body 11 with an upper opening and a cover plate 12 hinged to the box body 11 and capable of closing the opening of the box body 11. An inlet 111 is formed on the side wall of the box body 11, and the inlet 111 is used for supplying water into the box body 11. A filter screen 2 is arranged in the box body 11. The filter screen 2 is cylindrical and vertically placed. The end of the filter screen 2 far from the ground is higher than the inlet 111. Both axial ends of the filter screen 2 are open. The filter screen 2 is used for filtering solid impurity particles in water. A concave surface 112 is formed at the bottom of the box body 11, and a pipe 4 is installed at the lowest point of the concave surface 112. One end of the pipe 4 close to the box body 11 is located at the central position directly below the filter screen 2. The pipe 4 connects the box body 11 with the inlet of an oil-water separator 3, and the pipe 4 is used for sending the water filtered by the filter screen 2 into the oil-water separator 3. The water from the bottom of the quench tower is mixed with oil, and the oil-water separator 3 can separate the oil in the water. A pipe 5 is installed at the outlet of the oil-water separator 3, and the pipe 5 is used for connecting the outlet of the oil-water separator 3 with a water storage tank 6, and the water storage tank 6 can store the water after removing the oil.

[0029] Please refer to the Figure 3 , three heaters 7 are installed on the inner side wall of the box body 11. The three heaters 7 are arranged around the filter screen 2 at intervals. The heater 7 includes a box body 71 with an opening on one side and a pipe 72 passing through the box body 11 and extending into the interior of the box body 71. The open end of the box body 71 is installed on the inner wall of the box body 11. Methanol from outside the device enters the methanol buffer tank, is boosted by the methanol feed pump, and then exchanges heat to 100°C through the internal heat exchanger in the reactor, the methanol-purified water heat exchanger, and the methanol-condensate heat exchanger. Then it is divided into three paths: the first path exchanges heat through the methanol-stripping gas heat exchanger; the second path exchanges heat through the methanol-steam heat exchanger to gasify the methanol; the third path is boosted by the methanol booster pump and atomized by the atomizing nozzle, and is mixed with the gasified methanol from the first two paths before the methanol-reaction gas heat exchanger, and then enters the methanol-reaction gas heat exchanger to fully exchange heat with the high-temperature reaction gas from the reactor to recover the high-temperature heat. The heat-exchanged methanol is mixed with the low-pressure superheated steam to about 250°C and enters the reactor feed distributor. The methanol steam heat exchangers are arranged in parallel. When operating at high load (120%), the steam consumption of the two heat exchangers is about 60 t / h, the outlet temperature of the vaporized methanol is about 98°C, and the condensate temperature is about 125°C. The temperature is relatively high and the heat is not fully recovered. The pipe 72 can exchange heat with the heat that is not fully recovered in the second path to provide heat source for the box body 71. For example, the pipe 72 is in contact with the pipeline with a relatively high temperature in the second path for heat exchange, thereby increasing the temperature inside the box body 71.

[0030] A heating wire can also be provided in the box body 71 to heat the inside of the box body 71. When the worker thinks that the temperature inside the box body 71 is not high enough, the heating wire can be used to increase the temperature inside the box body 71. The box body 71 can increase the temperature inside the box body 11 and thus increase the temperature of the filter screen 2. Since the water contains some oil, the oil will adhere to the filter screen 2 during the process of filtering the water. In winter, when the temperature is low, the oil will solidify on the filter screen 2, thereby accelerating the speed of the filter screen 2 being blocked. By providing the heater 7, the possibility of the filter screen 2 being blocked due to oil solidification in winter is reduced.

[0031] Please refer to the attached drawings in the instruction manual. Figure 1 A flow sensor 8 is installed on the pipe 4, and the flow sensor 8 is used to detect the liquid flow in the pipe 4. An alarm 9 is installed on the outer wall of the box 11. The alarm 9 is electrically connected to a controller 10. The controller 10 is electrically connected to the flow sensor 8. The worker can preset the liquid flow value in the pipe 4 when the filter 2 is blocked. When the flow value detected by the flow sensor 8 is the preset value, the alarm 9 can be controlled to sound an alarm, which indicates that the filter 2 is blocked, reminding the worker that the filter 2 needs to be replaced. A liquid inlet pipe 13 is installed at the water inlet 111, and a valve 14 is installed on the liquid inlet pipe 13. Before replacing the filter 2, the valve 14 can be closed to stop the water inlet.

[0032] Please refer to the attached drawings in the instruction manual. Figure 2 , Figure 3 and Figure 4 Six square penetration holes 21 are opened on the outer wall of the filter screen 2, and three penetration holes 21 are arranged on the same circumference as a group. The three penetration holes 21 located on the same circumference are arranged around the axis of the filter screen 2. The penetration holes 21 are used for a penetration rod 15 to penetrate. The cross-section of the penetration rod 15 is square. Two sliders 16 are slidably connected to the penetration rod 15. The two sliders 16 can slide along the radial direction of the penetration rod 15. The radial direction of the penetration rod 15 is a direction perpendicular to the length direction of the penetration rod 15. A spring 17 is provided inside the penetration rod 15 forcing the slider 16 to extend relative to the outer wall of the penetration rod 15 in the length direction. The spring is a compression spring. Two fixing blocks 18 are also formed on the penetration rod 15. When the penetration rod 15 is penetrated by the filter screen 2, the fixing block 18 can abut against the outer wall of the filter screen 2, and the slider 16 can abut against the inner wall of the filter screen 2. A support plate 19 is formed at one end of the penetration rod 15 away from the slider 16 in the length direction. The fixing block 18 is located between the slider 16 and the support plate 19. An arc surface is formed at one end of the support plate 19 away from the slider 16, and the arc surface can fit the inner wall of the box body 11 everywhere. The six support plates 19 are arranged in this way. The six support plates 19 can support the filter screen 2 so that the filter screen 2 can be vertically and fixedly relatively stable relative to the box body 11.

[0033] Please refer to the attached drawings in the instruction manual. Figure 2, a rubber ring 20 is adhered to the end face of the end of the filter screen 2 close to the ground. The axis of the rubber ring 20 coincides with the axis of the filter screen 2. An inclined surface 22 is formed at one end of the rubber ring 20 facing away from the filter screen 2. The end of the inclined surface 22 close to the ground is close to the axis of the filter screen 2. The slope of the inclined surface 22 is the same as the slope of the concave surface 112. When the filter screen 2 is placed in the box body 11, the inclined surface 22 can be everywhere in contact with the concave surface 112.

[0034] The working principle of this embodiment: Open the valve 14, and water is introduced into the box body 11. The filter screen 2 can filter solid impurity particles in the water. The water removing the solid impurity particles can enter the oil-water separator 3 through the first pipeline 4. The oil-water separator 3 separates the oil and water in the water, and the separated water enters the water storage tank 6 through the second pipeline 5 for collection.

[0035] The above are all the preferred embodiments of this application. The protection scope of this application is not limited by this. Therefore, all equivalent changes made according to the structure, shape and principle of this application should be covered within the protection scope of this application.

Claims

1. A cleaning and filtering device for cooling water in an MTO methanol feeding device, characterized in that, include: A filter box (1), wherein a water inlet (111) is provided on the filter box (1), and a filter screen (2) is provided inside the filter box (1), and the filter screen (2) is used to filter solid impurities in water; An oil-water separator (3), wherein the water inlet of the oil-water separator (3) is connected to the interior of the filter box (1) through a pipe one (4), and filtered water can enter the oil-water separator (3) through the pipe one (4); and the water outlet of the oil-water separator (3) is connected to a water storage tank (6) through a pipe two (5).

2. The cleaning and filtering equipment for cooling water in an MTO methanol feeding device according to claim 1, characterized in that, A heater (7) is provided in the filter box (1), and the heater (7) is used to heat the filter screen (2).

3. The cleaning and filtering equipment for cooling water in an MTO methanol feeding device according to claim 1, characterized in that, The filter screen (2) is cylindrical and placed vertically, the pipe 1 (4) is installed at the bottom of the filter box (1), and the water inlet (111) is opened on the side wall of the filter box (1).

4. The cleaning and filtering equipment for cooling water in an MTO methanol feeding device according to claim 1, characterized in that, The filter box (1) comprises a box body (11) with an upper opening and a cover plate (12) hinged to the box body (11) and closing the opening of the box body (11).

5. The cleaning and filtering equipment for cooling water in an MTO methanol feeding device according to claim 1, wherein, The pipeline (4) is provided with a flow sensor (8) capable of detecting the flow rate of liquid in the pipeline (4); the filter box (1) is provided with an alarm (9); the alarm (9) is electrically connected to a controller (10); the controller (10) is electrically connected to the flow sensor (8); when the flow rate of liquid in the pipeline (4) reaches a preset value, the alarm (9) can sound an alarm; a liquid inlet pipe (13) is installed at the water inlet (111); a valve (14) is installed on the liquid inlet pipe (13).

6. The cleaning and filtering equipment for cooling water in an MTO methanol feeding device according to claim 3, characterized in that, The filter box (1) has a concave surface (112) formed on the bottom, and the pipe 1 (4) is located at the lowest point of the concave surface (112).

7. The cleaning and filtering equipment for cooling water in an MTO methanol feeding device according to claim 3, characterized in that, A square penetration hole (21) is provided on the side wall of the filter screen (2). The penetration hole (21) is used for a penetration rod (15) to be penetrated. The penetration rod (15) is slidably mounted with two sliders (16). The two sliders (16) can slide along the radial direction of the penetration rod (15). A spring (17) is provided inside the penetration rod (15) forcing the sliders (16) to extend relative to the penetration rod (15). Two fixing blocks (18) are also formed on the penetration rod (15). The fixing blocks (18) can abut against the outer side wall of the filter screen (2). The sliders (16) can abut against the inner side wall of the filter screen (2). A support plate (19) is installed at one end of the penetration rod (15) away from the sliders (16) in the length direction. The support plate (19) can abut against the inner wall of the filter box (1) so that the position of the filter screen (2) relative to the filter box (1) is fixed.

8. The cleaning and filtering equipment for cooling water in an MTO methanol feeding device according to claim 6, characterized in that, A rubber ring (20) is installed at one end of the filter screen (2) close to the ground, and a slope (22) is formed at one end of the rubber ring (20) away from the filter screen (2). The slope of the slope (22) is consistent with the slope of the concave surface (112), and the slope (22) can fit the concave surface (112) everywhere.

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