Acid-alkali cleaning system suitable for MVR evaporator

Abstract

An acid-alkali cleaning system applicable to an MVR (mechanical vapor recompression) evaporator belongs to the technical field of sewage treatment, and is characterized in that a cleaning solution stock solution barrel filled with an alkaline cleaning solution stock solution is connected with a container filled with an alkaline cleaning solution through a proportioning pump cleaning solution stock solution inlet pipe, and a container filled with an acidic cleaning solution stock solution is connected with a container filled with an acidic cleaning solution through a pipeline; the container filled with the alkaline cleaning solution and the container filled with the acidic cleaning solution are connected with the MVR evaporator equipment through pipelines, and the container filled with the alkaline cleaning solution and the container filled with the acidic cleaning solution are connected with the concentrated solution barrel filled with the concentrated solution through pipelines. When the MVR equipment treats water quality of heavy oil and heavy mud, the cleaning system is used for firstly cleaning surface dirt such as oil sludge, and then the acid cleaning agent is used for cleaning scale, so that scaling of an evaporator can be effectively prevented by regularly cleaning the equipment, and smooth operation of the equipment is kept.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the sewage treatment technical field, concretely relates to an acid and alkali cleaning system suitable for MVR evaporator. BACKGROUND

[0002] Evaporators are important equipment used in many industrial processes, and MVR evaporators, as a type of high-efficiency, are widely used. However, as the use time increases, the cleaning problem of the evaporator gradually emerges, and the scaling of the evaporator not only affects the normal operation of the evaporator, but also reduces the efficiency of the equipment, and may even cause the failure of the equipment. In order to ensure the stable operation and prolong the service life of the MVR evaporator, it is particularly important to do a good job in the protection of scaling. At present, the widely used is the acid cleaning program, but the acid cleaning liquid cleaning effect is poor for the cleaning water with much oil sludge, and the scaling problem still cannot be solved, and based on this, the utility model provides an acid and alkali cleaning system suitable for MVR evaporator. SUMMARY

[0003] In order to solve the above-mentioned problems, the utility model provides: an acid and alkali cleaning system suitable for MVR evaporator, including the container that is equipped with alkaline cleaning liquid, the container that is equipped with acid cleaning liquid, MVR evaporator equipment and concentrated liquid barrel, the cleaning liquid stock solution barrel that is equipped with alkaline cleaning liquid stock solution is connected with the container that is equipped with alkaline cleaning liquid through the proportion pump cleaning liquid stock solution inlet pipe, the first water liquid mixing proportion pump is set on the proportion pump cleaning liquid stock solution inlet pipe, the tap water line is connected with the first water liquid mixing proportion pump through the first proportion pump tap water end electromagnetic valve, the container that is equipped with acid cleaning liquid stock solution is connected with the container that is equipped with acid cleaning liquid through the pipeline, the second water liquid mixing proportion pump is set on the pipeline, the tap water line is connected with the second water liquid mixing proportion pump through the second proportion pump tap water end electromagnetic valve, the container that is equipped with alkaline cleaning liquid, the container that is equipped with acid cleaning liquid are connected with MVR evaporator equipment through the pipeline, the container that is equipped with alkaline cleaning liquid, the container that is equipped with acid cleaning liquid are connected with the concentrated liquid barrel that is equipped with concentrated liquid through the pipeline.

[0004] Further, the container that is equipped with alkaline cleaning liquid, the container that is equipped with acid cleaning liquid are connected with the concentrated liquid barrel that is equipped with concentrated liquid through the waste cleaning liquid discharge pipe, and a one-way valve and a waste cleaning liquid discharge pump are arranged on the two branch pipes.

[0005] Further, the concentrated liquid barrel is sequentially provided with a concentrated liquid ultrahigh sensor, a concentrated liquid high liquid level sensor, a concentrated liquid low liquid level sensor and a concentrated liquid manual discharge valve from high to low.

[0006] Further, the container with alkaline cleaning liquid is sequentially provided with an ultrahigh liquid level tuning fork sensor, a cleaning liquid high liquid level sensor, a cleaning liquid low liquid level sensor and a cleaning liquid barrel discharge manual valve from high to low, the ultrahigh liquid level tuning fork sensor is provided with a cleaning liquid ultrahigh alarm point, the cleaning liquid high liquid level sensor is provided with a high liquid level float ball, and the cleaning liquid low liquid level sensor is provided with a cleaning liquid low liquid level float ball.

[0007] Further, the cleaning liquid stock solution barrel is provided with a cleaning liquid stock solution low liquid level sensor.

[0008] Further, the tap water pipeline is connected with a tap water hose through a tap water manual valve.

[0009] Further, the container with alkaline cleaning liquid is connected with an alkaline cleaning liquid three-way electromagnetic valve through an alkaline cleaning liquid discharge pipe, the container with alkaline cleaning liquid is connected with the alkaline cleaning liquid three-way electromagnetic valve through an alkaline cleaning liquid inlet pipe, and the alkaline cleaning liquid three-way electromagnetic valve is connected with an MVR evaporator device.

[0010] Further, the container with alkaline cleaning liquid is connected with an alkaline cleaning liquid three-way electromagnetic valve through an alkaline cleaning liquid discharge pipe, the container with alkaline cleaning liquid is connected with the alkaline cleaning liquid three-way electromagnetic valve through an alkaline cleaning liquid inlet pipe, and the alkaline cleaning liquid three-way electromagnetic valve is connected with an MVR evaporator device.

[0011] The beneficial effects of the utility model are as follows: when MVR equipment processes heavy oil and heavy mud, the surface dirt such as oil sludge is cleaned first, and then the limescale is cleaned with an acidic cleaning agent, so that regular cleaning of the equipment can effectively prevent the evaporator from scaling, thereby maintaining smooth operation of the equipment. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 The utility model is a system structure schematic view.

[0013] Among them, the reference signs are as follows:

[0014] 1. tap water pipeline; 2. tap water manual valve; 3. tap water hose; 4. proportional pump tap water end electromagnetic valve; 5. water-liquid mixed proportional pump; 6. cleaning liquid stock low liquid level sensor; 7. alkaline cleaning liquid stock; 8. cleaning liquid barrel discharge manual valve; 9. cleaning liquid low liquid level sensor; 10. cleaning liquid low liquid level float ball; 11. proportional pump cleaning liquid stock inlet pipe; 12. cleaning liquid stock barrel; 13. ultrahigh liquid level tuning fork sensor; 14. cleaning liquid ultrahigh alarm point; 15. cleaning liquid high liquid level sensor; 16. high liquid level float ball; 17. alkaline cleaning liquid; 18. alkaline cleaning liquid discharge pipe; 19. alkaline cleaning liquid inlet pipe; 20. alkaline cleaning liquid three-way electromagnetic valve; 21. acidic cleaning liquid discharge pipe; 22. acidic cleaning liquid three-way electromagnetic valve; 23. acidic cleaning liquid; 24. acidic cleaning liquid stock; 25. one-way valve; 26. waste cleaning liquid discharge pump; 27. waste cleaning liquid discharge pipe; 28. MVR evaporator equipment; 29. concentrated liquid ultrahigh sensor; 30. concentrated liquid high liquid level sensor; 31. concentrated liquid low liquid level sensor; 32. concentrated liquid manual discharge valve; 33. concentrated liquid; 34. concentrated liquid barrel. DETAILED DESCRIPTION

[0015] In order to make the technical means and purposes of the utility model easy to understand, the utility model is further described below in combination with specific embodiments. A kind of acid-base cleaning system suitable for MVR evaporator, including container with alkaline cleaning liquid 17, container with acidic cleaning liquid 23, MVR evaporator equipment 28 and concentrated liquid barrel 34, cleaning liquid stock barrel 12 with alkaline cleaning liquid stock 7 is connected with the container with alkaline cleaning liquid 17 by proportional pump cleaning liquid stock inlet pipe 11, first water-liquid mixed proportional pump 5 is arranged on proportional pump cleaning liquid stock inlet pipe 11, tap water pipeline 1 is connected with first water-liquid mixed proportional pump 5 by first proportional pump tap water end electromagnetic valve 4, container with acidic cleaning liquid stock 24 is connected with the container with acidic cleaning liquid 23 by pipeline, second water-liquid mixed proportional pump is arranged on pipeline, tap water pipeline 1 is connected with second water-liquid mixed proportional pump by second proportional pump tap water end electromagnetic valve, the container with alkaline cleaning liquid 17, the container with acidic cleaning liquid 23 are connected with MVR evaporator equipment 28 by pipeline, the container with alkaline cleaning liquid 17, the container with acidic cleaning liquid 23 are connected with the concentrated liquid barrel 34 with concentrated liquid 33 by pipeline.

[0016] Among them, the container with alkaline cleaning liquid 17, the container with acidic cleaning liquid 23 are connected with the concentrated liquid barrel 34 with concentrated liquid 33 by waste cleaning liquid discharge pipe 27, one-way valve 25, waste cleaning liquid discharge pump 26 are arranged on two branch pipelines.

[0017] The concentrated liquid barrel 34 is sequentially provided with a concentrated liquid ultrahigh sensor 29, a concentrated liquid high liquid level sensor 30, a concentrated liquid low liquid level sensor 31 and a concentrated liquid manual discharge valve 32 from high to low.

[0018] The container filled with the alkaline cleaning liquid 17 is sequentially provided with an ultrahigh liquid level tuning fork sensor 14, a cleaning liquid high liquid level sensor 15, a cleaning liquid low liquid level sensor 9 and a cleaning liquid barrel discharge manual valve 8 from high to low.

[0019] The cleaning liquid stock barrel 12 is provided with a cleaning liquid stock low liquid level sensor 6.

[0020] The tap water pipeline 1 is connected with a tap water hose 3 through a tap water manual valve 2.

[0021] The container filled with the alkaline cleaning liquid 17 is connected with an alkaline cleaning liquid three-way electromagnetic valve 20 through an alkaline cleaning liquid discharge pipe 18 and an alkaline cleaning liquid inlet pipe 19.

[0022] The container filled with the acidic cleaning liquid 23 is connected with an acidic cleaning liquid three-way electromagnetic valve 22 through an acidic cleaning liquid discharge pipe 21 and an acidic cleaning liquid inlet pipe.

[0023] In order to prevent the MVR evaporator from scaling, the device needs to be cleaned regularly, and the device needs to be cleaned according to different water quality and different on-site conditions. The utility model discloses an acid-base cleaning program. The specific operation is as follows: after starting the cleaning mode, 1. The device is emptied, and the inside of the evaporator is vacuumized; 2. When the vacuum degree of the evaporator reaches a certain negative pressure, the three-way electromagnetic valve of the alkaline cleaning liquid into the device is opened, the alkaline cleaning agent is sucked into the evaporator, heated to 50 DEG C, and the aeration circulation cleaning device is started; 3. After half an hour of cleaning, the alkaline cleaning liquid is discharged to the alkaline cleaning liquid barrel, and the device repeats steps 1-2 to enter the stock solution; 4. After discharging the stock solution, the device repeats steps 1-2 to enter the acidic cleaning agent, the acidic cleaning agent enters the device to clean, is heated to 50 DEG C, and the aeration circulation cleaning device is started; after half an hour, it is discharged into the acidic cleaning liquid barrel.

[0024] The acid cleaning solution tank, the alkaline cleaning solution tank and the concentrated solution tank are provided with a sewage outlet connected with a manual valve, a low liquid level float ball, a high liquid level float ball and an ultrahigh liquid level float ball, the low and high float balls of the cleaning solution tank are linked with a proportional pump, and the ultrahigh float ball is linked with the whole equipment as an alarm;

[0025] The proportional pump is connected with cleaning solution stock solution and tap water, and the cleaning solution can be automatically prepared by setting the proportion, and the default proportion is 1:10;

[0026] The cleaning solution stock solution tank is also provided with a low liquid level alarm linked with the equipment;

[0027] The acid and alkali cleaning solution tanks are both provided with three-way electromagnetic valves, and the liquid can be introduced and discharged after the equipment is linked;

[0028] The acid and alkali cleaning solutions need to be replaced regularly, and a one-way valve and a discharge pump are arranged to discharge to the concentrated solution tank at a set period;

[0029] The tap water pipe is connected with the proportional pump, and a manual control valve and a hose are reserved.

[0030] The tap water pipe 1 is used to supplement tap water for mixing cleaning agent and daily temporary use;

[0031] The tap water manual valve 2 is used to control the daily temporary use of tap water;

[0032] The tap water hose 3 is used for daily temporary use of the hose;

[0033] The proportional pump tap water end electromagnetic valve 4 is used as a valve for automatically supplementing tap water in the cleaning agent, and is controlled according to the proportional pump;

[0034] The water and liquid mixing proportional pump 5 can automatically supplement the cleaning solution stock solution and tap water according to the set proportion;

[0035] The cleaning solution stock solution low liquid level sensor 6 is triggered after the liquid level reaches, and the triggering of the sensor represents that the stock solution needs to be supplemented;

[0036] The cleaning solution tank discharge manual valve 8 is a control valve for manual discharge of the cleaning solution tank;

[0037] The cleaning solution low liquid level sensor 9 is triggered after the liquid level reaches, and the triggering of the sensor represents that the cleaning solution needs to be supplemented;

[0038] The cleaning solution low liquid level float ball 10 controls the switch by water buoyancy, which is used to prevent the low liquid level sensor 9 from being triggered by mistake;

[0039] The cleaning solution stock solution tank 12 is used to place the cleaning solution stock solution tank;

[0040] The ultrahigh liquid level tuning fork sensor 13 is used as a sensor for sensing the cleaning solution at the ultrahigh position of the tank;

[0041] The cleaning liquid ultra-high alarm point 14 is an ultra-high alarm position of the cleaning liquid barrel, which is placed in an abnormal state to cause the cleaning liquid to overflow;

[0042] The cleaning liquid high liquid level sensor 15 is a sensor for controlling the fixed position reached by the daily cleaning liquid;

[0043] The high liquid level float ball 16 is the position of the daily cleaning liquid level;

[0044] The alkaline cleaning liquid 17 represents the prepared alkaline cleaning liquid;

[0045] The alkaline cleaning liquid discharge pipe 18 is the pipe for discharging the alkaline cleaning liquid after the cleaning fixed period;

[0046] The alkaline cleaning liquid inlet pipe 19 is the pipe for sucking the alkaline cleaning liquid into the equipment;

[0047] The alkaline cleaning liquid three-way electromagnetic valve 20 is an electromagnetic valve for controlling the alkaline cleaning liquid to enter the equipment and be discharged into the concentrated liquid barrel;

[0048] The acidic cleaning liquid discharge pipe 21 is the pipe for discharging the acidic cleaning liquid after the cleaning fixed period;

[0049] The acidic cleaning liquid three-way electromagnetic valve 22 is an electromagnetic valve for controlling the acidic cleaning liquid to enter the equipment and be discharged into the concentrated liquid barrel;

[0050] The acidic cleaning liquid 23 represents the prepared acidic cleaning liquid stock solution;

[0051] The acidic cleaning liquid stock solution 24 represents the acidic cleaning liquid stock solution;

[0052] The one-way valve 25 prevents the discharged waste cleaning liquid from being mistakenly discharged into another cleaning liquid barrel;

[0053] The waste cleaning liquid discharge pump 26 is a pump for discharging the cleaning liquid;

[0054] The waste cleaning liquid discharge pipe 27 represents the pipe for discharging the waste cleaning liquid to the concentrated liquid barrel;

[0055] The MVR evaporator equipment 28 is an MVR evaporator with a PLC control system, which can control the cleaning liquid to enter and exit through the compressor and compressed air after writing the program, and generate an alarm prompt after the corresponding point is triggered;

[0056] The concentrated liquid ultra-high sensor 29 is a sensor for triggering when the liquid level in the concentrated liquid barrel reaches a certain position, which will alarm and stop after being triggered;

[0057] The concentrated liquid high liquid level sensor 30 is used to prompt the manual discharge of the concentrated liquid after being triggered;

[0058] The concentrated liquid low liquid level sensor 31 prompts the liquid level reached by the concentrated liquid;

[0059] The concentrated liquid manual discharge valve 32 is a manual valve for manually discharging the concentrated liquid;

[0060] The concentrated liquid 33 represents the concentrated liquid and the discharged cleaning liquid;

[0061] The concentrated liquid barrel 34 is a barrel for collecting the concentrated liquid.

[0062] The above merely provides the preferred embodiment of the present application, and the protection scope of the present application is not limited to this. Any skilled person in the art, according to the technical scheme and the conception of the present application, can make equivalent substitution or change within the technical range disclosed by the present application, and all of them should be covered in the protection scope of the present application.

Claims

1. An acid and base cleaning system suitable for use in an MVR evaporator, characterized in that, The container containing the alkaline cleaning solution (17), the container containing the acidic cleaning solution (23), the MVR evaporator device (28) and the concentrated liquid barrel (34), the cleaning solution raw liquid barrel (12) containing the alkaline cleaning solution raw liquid (7) is connected with the container containing the alkaline cleaning solution (17) through the cleaning solution raw liquid inlet pipe (11) of the proportional pump, the first water and liquid mixing proportional pump (5) is arranged on the cleaning solution raw liquid inlet pipe (11) of the proportional pump, the tap water pipeline (1) is connected with the first water and liquid mixing proportional pump (5) through the first proportional pump tap water end electromagnetic valve (4), the container containing the acidic cleaning solution raw liquid (24) is connected with the container containing the acidic cleaning solution (23) through the pipeline, the second water and liquid mixing proportional pump is arranged on the pipeline, the tap water pipeline (1) is connected with the second water and liquid mixing proportional pump through the second proportional pump tap water end electromagnetic valve, the container containing the alkaline cleaning solution (17), the container containing the acidic cleaning solution (23) are connected with the MVR evaporator device (28) through the pipeline, the container containing the alkaline cleaning solution (17), the container containing the acidic cleaning solution (23) are connected with the concentrated liquid barrel (34) containing the concentrated liquid (33) through the pipeline.

2. The acid and base cleaning system suitable for use in an MVR evaporator of claim 1, wherein, The container containing the alkaline cleaning solution (17), the container containing the acidic cleaning solution (23) are connected with the concentrated liquid barrel (34) containing the concentrated liquid (33) through the waste cleaning solution discharge pipe (27), the one-way valve (25) and the waste cleaning solution discharge pump (26) are arranged on the two branch pipelines.

3. The acid and base cleaning system suitable for use in an MVR evaporator of claim 1, wherein, The concentrated liquid barrel (34) is sequentially provided with the concentrated liquid ultrahigh sensor (29), the concentrated liquid high liquid level sensor (30), the concentrated liquid low liquid level sensor (31) and the concentrated liquid manual discharge valve (32) from high to low.

4. The acid and base cleaning system suitable for use in an MVR evaporator of claim 1, wherein, The container containing the alkaline cleaning solution (17) is sequentially provided with the ultrahigh liquid level tuning fork sensor (14), the cleaning solution high liquid level sensor (15), the cleaning solution low liquid level sensor (9) and the cleaning solution barrel discharge manual valve (8) from high to low, the cleaning solution ultrahigh alarm point (13) is arranged on the ultrahigh liquid level tuning fork sensor (14), the high liquid level float ball (16) is arranged on the cleaning solution high liquid level sensor (15), and the cleaning solution low liquid level float ball (10) is arranged on the cleaning solution low liquid level sensor (9).

5. The acid and base cleaning system suitable for use in an MVR evaporator of claim 1, wherein, The cleaning solution raw liquid barrel (12) is provided with the cleaning solution raw liquid low liquid level sensor (6).

6. The acid and base cleaning system suitable for use in an MVR evaporator of claim 1, wherein, The tap water pipeline (1) is connected with the tap water hose (3) through the tap water manual valve (2).

7. The acid and base cleaning system suitable for use in an MVR evaporator of claim 1, wherein, The container containing the alkaline cleaning solution (17) is connected with the alkaline cleaning solution three-way electromagnetic valve (20) through the alkaline cleaning solution discharge pipe (18), the container containing the alkaline cleaning solution (17) is connected with the alkaline cleaning solution three-way electromagnetic valve (20) through the alkaline cleaning solution inlet pipe (19), and the alkaline cleaning solution three-way electromagnetic valve (20) is connected with the MVR evaporator device (28).

8. The acid and base cleaning system suitable for use in an MVR evaporator of claim 1, wherein, The container filled with the acidic cleaning solution (23) is connected with the acidic cleaning solution three-way electromagnetic valve (22) through the acidic cleaning solution discharge pipe (21), and is connected with the acidic cleaning solution three-way electromagnetic valve (22) through the acidic cleaning solution inlet pipe. The acidic cleaning solution three-way electromagnetic valve (22) is connected with the MVR evaporator device (28).

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