Oily sewage continuous dosing and mixing system

Abstract

The utility model discloses a continuous dosing and mixing system for oily sewage. The continuous dosing and mixing system comprises an air compressor, an air storage tank, a premixer, a jet device and a first premixer feeding pipe, an air inlet of the jet device is communicated with the air storage tank through an air outlet pipe of the air storage tank, a feed port of the jet device is communicated with a feed pipe of the first premixer, and a discharge port of the jet device is communicated with the premixer through a feed pipe of the second premixer; the air compressor is communicated with the air storage tank through an air compressor air outlet pipe. The system solves the problem that a medicament and oil-containing sewage cannot be subjected to mixed reaction during pipeline type dosing of oil field sewage.

Description

Technical Field

[0001] The utility model belongs to the technical field of sewage treatment, and in particular relates to a continuous dosing and mixing system for oily sewage. Background Art

[0002] At present, various chemicals are used in the process of oilfield wastewater treatment, and generally two methods are adopted: one is to add chemicals into the reaction tank and install a stirring device to stir it to make it fully react; the other is to add chemicals to the feed pipeline, make it react on the pipeline, and then enter the subsequent treatment. Since each unit in the on-site water treatment process requires sealing and the equipment is under pressure, it is difficult to install the stirring device in a sealed manner, so pipeline dosing is used on site; however, when pipeline dosing is adopted, there will be a problem that the chemicals and oily wastewater cannot be fully mixed and reacted, and the efficiency is low, which affects the treatment effect of each subsequent treatment unit. Utility Model Content

[0003] The utility model aims to provide a continuous dosing and mixing system for oily sewage, which solves the problem that the medicine and the oily sewage cannot be fully mixed and reacted when using pipeline dosing for oilfield sewage, and improves the mixing efficiency.

[0004] The technical scheme adopted by the utility model is that the continuous dosing and mixing system for oily wastewater includes an air compressor, an air storage tank, a premixer, an ejector and a first premixer feed pipe; the air inlet of the ejector is connected with the air storage tank through an air storage tank outlet pipe, the feed port of the ejector is connected with the first premixer feed pipe, and the discharge port of the ejector is connected with the premixer through a second premixer feed pipe; the air compressor is connected with the air storage tank through the air compressor outlet pipe.

[0005] The utility model is also characterized in that:

[0006] The premixer comprises a premixer shell, and the side wall of the premixer shell is provided with a first dosing pipe, a second dosing pipe and a third dosing pipe in sequence from bottom to top;

[0007] The second premixer feed pipe is arranged on the side wall of the premixer housing, and the premixer housing is connected with the discharge port of the ejector through the second premixer feed pipe;

[0008] A premixer discharge pipe is also provided on the side wall of the premixer housing, and the premixer discharge pipe is above the second premixer feed pipe; a premixer drain pipe is provided at the bottom of the premixer housing;

[0009] A circular support plate is arranged inside the premixer housing, and a plurality of through holes are arranged on the support plate. The support plate is located at the lower edge of the interface between the second premixer feed pipe and the premixer housing;

[0010] A vortex rotator is arranged between the support plate and the top wall of the premixer shell, and the vortex rotator includes a vertically arranged support rod, the support rod is located on the central axis of the premixer shell, and the bottom end of the support rod is connected to the support plate; a spiral partition is arranged between the support rod and the inner wall of the premixer shell, the starting point of the bottom of the partition is at the connection between the support rod and the support plate, and the end point of the top of the partition is at the lower edge of the interface between the premixer discharge pipe and the premixer shell, the No. 1 dosing tube is arranged on the side wall of the premixer shell corresponding to the first circle of the partition rotation, the No. 2 dosing tube is arranged on the side wall of the premixer shell corresponding to the second circle of the partition rotation, and the No. 3 dosing tube is arranged on the side wall of the premixer shell corresponding to the third circle of the partition rotation.

[0011] A No. 1 water blocking plate is vertically arranged between two adjacent plates in the second circumference of the partition plate rotation; a No. 2 water blocking plate is vertically arranged between two adjacent plates in the third circumference of the partition plate rotation; and a plurality of through holes are arranged on the No. 1 water blocking plate and the No. 2 water blocking plate.

[0012] The No. 1 dosing pipe is provided with a No. 1 dosing hand valve, the No. 2 dosing pipe is provided with a No. 2 dosing hand valve, and the No. 3 dosing pipe is provided with a No. 3 dosing hand valve;

[0013] A drain solenoid valve is provided on the premixer drain pipe.

[0014] The second premixer feed pipe is provided with a feed sampling pipe, and the feed sampling pipe is provided with a feed sampling valve; the premixer discharge pipe is provided with a discharge solenoid valve and a discharge sampling pipe, and the discharge sampling pipe is provided with a discharge sampling valve.

[0015] An inspection port is provided on the side wall of the premixer housing.

[0016] A feed solenoid valve is arranged on the feed pipe of the first premixer.

[0017] The beneficial effects of the utility model are:

[0018] The utility model discloses a continuous dosing and mixing system for oily sewage, which utilizes an air compressor, an air storage tank and an ejector to fully mix the oily sewage with air, and connects a medicine pipeline in a premixer, and arranges a water blocking plate in the premixer shell so that the medicine can fully react in the tank. The vortex rotator can efficiently and quickly make the water flow climb to the discharge port along the spiral partition, and at the same time, the vortex rotator can also make the sediment generated during the reaction slide to the bottom of the tank along the spiral partition and be discharged from the bottom emptying port, which can improve the mixing efficiency and relieve the processing pressure of the subsequent equipment at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the structure of the oily wastewater continuous dosing and mixing system of the utility model;

[0020] Figure 2 This is a schematic diagram of the structure of a premixer in the oily wastewater continuous dosing and mixing system of the utility model;

[0021] Figure 3 It is a structural schematic diagram of the support plate in the oily wastewater continuous dosing and mixing system of the utility model.

[0022] In the figure, 1. air compressor outlet pipe, 2. first premixer feed pipe, 3. ejector, 4. premixer exhaust pipe, 5. exhaust solenoid valve, 6. air compressor, 7. feed solenoid valve, 8. air storage tank, 9. air storage tank outlet pipe, 10. premixer discharge pipe, 11. discharge solenoid valve, 12. premixer, 13. No. 3 dosing hand valve, 14. No. 3 dosing pipe, 15. No. 2 dosing hand valve , 16. No. 2 dosing pipe, 17. No. 1 dosing hand valve, 18. No. 1 dosing pipe, 19. Discharge sampling valve, 20. Discharge sampling pipe, 21. No. 2 water blocking plate, 22. Inspection port, 23. No. 1 water blocking plate, 24. Feed sampling valve, 25. Feed sampling tube, 26. Partition, 27. Support plate, 28. Support rod, 29. Premixer shell, 30. Second premixer feed pipe. DETAILED DESCRIPTION

[0023] The utility model is described in detail below with reference to the accompanying drawings and specific implementation modes.

[0024] The utility model provides a continuous dosing and mixing system for oily sewage, such as Figure 1-3 As shown, it includes an air compressor 6, an air tank 8, a premixer 12, an ejector 3 and a first premixer feed pipe 2; the air inlet of the ejector 3 is connected to the air tank 8 through the air tank outlet pipe 9, the feed port of the ejector 3 is connected to the first premixer feed pipe 2, and the outlet of the ejector 3 is connected to the premixer 12 through the second premixer feed pipe 30; the air compressor 6 is connected to the air tank 8 through the air compressor outlet pipe 1. The compressed air of the air compressor 6 is connected to the ejector 3 through the air tank outlet pipe 9 through the air tank, enters the premixer 12 through the ejector 3, and the incoming water enters the premixer 12 through the first premixer feed pipe 2;

[0025] The premixer 12 includes a premixer housing 29 (the premixer housing 29 includes an upper head, an intermediate tank body and a lower head arranged in sequence from top to bottom), and a first dosing pipe 18, a second dosing pipe 16 and a third dosing pipe 14 are arranged in sequence on the side wall of the premixer housing 29 from bottom to top;

[0026] The second premixer feed pipe 30 is disposed on the lower end side wall of the premixer housing 29, and the premixer housing 29 is connected to the discharge port of the ejector 3 through the second premixer feed pipe 30;

[0027] A premixer discharge pipe 10 is also provided on the side wall of the premixer housing 29, and the premixer discharge pipe 10 is above the second premixer feed pipe 30; a premixer exhaust pipe 4 is provided at the bottom (lower end cap) of the premixer housing 29;

[0028] A circular support plate 27 is arranged inside the premixer housing 29, the support plate 27 is located at the bottom of the premixer housing 29, a plurality of through holes are arranged on the support plate 27, and the support plate 27 is located at the lower edge of the interface between the second premixer feed pipe 30 and the premixer housing 29; a vortex rotator is arranged between the support plate 27 and the top wall of the premixer housing 29, and the vortex rotator includes a vertically arranged support rod 28, the support rod 28 is located on the central axis of the premixer housing 29, and the bottom end of the support rod 28 is connected to the support plate 27; the support rod 28 and the inner wall of the premixer housing 29 are connected to each other. A spiral partition 26 is arranged between the partitions, the starting point of the bottom of the partition 26 is at the connection between the support rod 28 and the support plate 27, the end point of the top of the partition 26 is at the lower edge of the interface between the premixer discharge pipe 10 and the premixer shell 29, the No. 1 dosing pipe 18 is arranged on the side wall of the premixer shell 29 corresponding to the first circle of rotation of the partition 26, the No. 2 dosing pipe 16 is arranged on the side wall of the premixer shell 29 corresponding to the second circle of rotation of the partition 26, and the No. 3 dosing pipe 14 is arranged on the side wall of the premixer shell 29 corresponding to the third circle of rotation of the partition 26.

[0029] A first water blocking plate 23 is vertically arranged between two adjacent plates in the second circumference of the partition plate 26; a second water blocking plate 21 is vertically arranged between two adjacent plates in the third circumference of the partition plate 26; and a plurality of through holes are arranged on the first water blocking plate 23 and the second water blocking plate 21.

[0030] The first dosing pipe 18 is provided with a first dosing hand valve 17, the second dosing pipe 16 is provided with a second dosing hand valve 15, and the third dosing pipe 14 is provided with a third dosing hand valve 13;

[0031] The premixer exhaust pipe 4 is provided with an exhaust solenoid valve 5. The oil sludge settled in the premixer 12 is discharged from the premixer exhaust pipe 4 through the exhaust solenoid valve 5.

[0032] A feed sampling tube 25 is provided on the second premixer feed pipe 30, and a feed sampling valve 24 is provided on the feed sampling tube 25; the water quality of the incoming water is judged through sampling detection to calculate the concentration of the configured reagent.

[0033] The premixer discharge pipe 10 is provided with a discharge solenoid valve 11 and a discharge sampling pipe 20, and the discharge sampling pipe 20 is provided with a discharge sampling valve 19. The water after the reagents are mixed enters the lower-level sedimentation and oil removal equipment from the premixer discharge pipe 10; the feed sampling valve 24 and the discharge sampling valve 19 are both ball valves.

[0034] An inspection port 22 is provided on the side wall of the premixer housing 29 .

[0035] A feed solenoid valve 7 is provided on the first premixer feed pipe 2 .

[0036] When in use, the air compressor 6 is turned on, and the compressed gas enters the gas storage tank 8 through the air compressor outlet pipe 1 for gas storage, and the gas in the gas storage tank 8 enters the air inlet port of the ejector 3 through the gas storage tank outlet pipe 9;

[0037] The feed solenoid valve 7 is opened, and the oily sewage enters the feed port of the ejector 3 from the first premixer feed pipe 2 through the feed solenoid valve 7 to dissolve gas. The dissolved oily sewage is ejected by the ejector 3 into the second premixer feed pipe 30; it enters the premixer 12 through the second premixer feed pipe 30 to mix with the reagents; the vortex rotator in the premixer 12 allows the oily sewage to enter the premixer housing 29 and then rotate and rise along the spiral partition 26. During the rising process, when the water flow rises to the height of the No. 1 dosing port 18, it mixes with the No. 1 reagent, and then passes through the No. 1 water blocking plate 23 to make the No. 1 reagent It is fully mixed and reacted with the oily wastewater; then the water flow continues to rise, and when it reaches the height of the No. 2 dosing port 16, it is mixed with the No. 2 agent, and then passes through the No. 2 water blocking plate 21 to allow the No. 2 agent to fully mix and react with the oily wastewater; finally, the water flow continues to rise, and when it reaches the height of the No. 3 dosing port 14, it is mixed with the No. 3 agent, and the discharge solenoid valve 11 is opened, and it enters the lower-level sedimentation and oil removal device through the premixer discharge pipe 10; the vortex rotator is used to make the sediment produced during the reaction slide to the bottom of the tank along the spiral partition, and the emptying solenoid valve 5 is opened to discharge from the bottom premixer emptying pipe 4 to relieve the processing pressure of the subsequent equipment. In the event of equipment failure, the mixture in the tank can also be emptied through the premixer emptying pipe 4;

[0038] The material in the second premixer feed pipe 30 flows out from the feed sampling pipe 25 through the feed sampling valve 24 for sampling and testing; the water quality of the feed is judged by sampling, and the amount of the dosing is adjusted according to the water quality;

[0039] The material in the pre-mixer discharge pipe 10 is discharged from the discharge sampling pipe 20 through the discharge sampling valve 19 for detection to determine the mixing condition of the reagents after the discharge;

[0040] The air compressor 1, the feed solenoid valve 7 and the discharge solenoid valve 11 in the equipment are connected to a PLC control box installed on site; the PLC control box controls the opening of the air compressor and each solenoid valve.

[0041] Example 1

[0042] Continuous dosing and mixing system for oily wastewater, such as Figure 1-3As shown, it includes an air compressor 6, an air tank 8, a premixer 12, an ejector 3 and a first premixer feed pipe 2; the air inlet of the ejector 3 is connected to the air tank 8 through the air tank outlet pipe 9, the feed port of the ejector 3 is connected to the first premixer feed pipe 2, and the discharge port of the ejector 3 is connected to the premixer 12 through the second premixer feed pipe 30; the air compressor 6 is connected to the air tank 8 through the air compressor outlet pipe 1.

[0043] Example 2

[0044] Continuous dosing and mixing system for oily wastewater, such as Figure 1-3 As shown, it includes an air compressor 6, an air tank 8, a premixer 12, an ejector 3 and a first premixer feed pipe 2; the air inlet of the ejector 3 is connected to the air tank 8 through the air tank outlet pipe 9, the feed port of the ejector 3 is connected to the first premixer feed pipe 2, and the outlet of the ejector 3 is connected to the premixer 12 through the second premixer feed pipe 30; the air compressor 6 is connected to the air tank 8 through the air compressor outlet pipe 1. The compressed air of the air compressor 6 is connected to the ejector 3 through the air tank outlet pipe 9, enters the premixer 12 through the ejector 3, and the incoming water enters the premixer 12 through the first premixer feed pipe 2;

[0045] The premixer 12 includes a premixer housing 29, and the side wall of the premixer housing 29 is provided with a first dosing pipe 18, a second dosing pipe 16 and a third dosing pipe 14 in order from bottom to top;

[0046] The second premixer feed pipe 30 is disposed on the lower end side wall of the premixer housing 29, and the premixer housing 29 is connected to the discharge port of the ejector 3 through the second premixer feed pipe 30;

[0047] A premixer discharge pipe 10 is also provided on the side wall of the premixer housing 29, and the premixer discharge pipe 10 is above the second premixer feed pipe 30; a premixer drain pipe 4 is provided at the bottom of the premixer housing 29;

[0048] A circular support plate 27 is provided inside the premixer housing 29, and a plurality of through holes are provided on the support plate 27. The support plate 27 is located at the lower edge of the interface between the second premixer feed pipe 30 and the premixer housing 29; a vortex rotator is provided between the support plate 27 and the top wall of the premixer housing 29, and the vortex rotator includes a vertically arranged support rod 28, the support rod 28 is located on the central axis of the premixer housing 29, and the bottom end of the support rod 28 is connected to the support plate 27; a spiral partition is provided between the support rod 28 and the inner side wall of the premixer housing 29. Plate 26, the starting point of the bottom of the partition 26 is at the connection between the support rod 28 and the support plate 27, the end point of the top of the partition 26 is at the lower edge of the interface between the premixer discharge pipe 10 and the premixer shell 29, the No. 1 dosing pipe 18 is arranged on the side wall of the premixer shell 29 corresponding to the first circle of rotation of the partition 26, the No. 2 dosing pipe 16 is arranged on the side wall of the premixer shell 29 corresponding to the second circle of rotation of the partition 26, and the No. 3 dosing pipe 14 is arranged on the side wall of the premixer shell 29 corresponding to the third circle of rotation of the partition 26.

[0049] Example 3

[0050] Continuous dosing and mixing system for oily wastewater, such as Figure 1-3 As shown, it includes an air compressor 6, an air tank 8, a premixer 12, an ejector 3 and a first premixer feed pipe 2; the air inlet of the ejector 3 is connected to the air tank 8 through the air tank outlet pipe 9, the feed port of the ejector 3 is connected to the first premixer feed pipe 2, and the outlet of the ejector 3 is connected to the premixer 12 through the second premixer feed pipe 30; the air compressor 6 is connected to the air tank 8 through the air compressor outlet pipe 1. The compressed air of the air compressor 6 is connected to the ejector 3 through the air tank outlet pipe 9 through the air tank, enters the premixer 12 through the ejector 3, and the incoming water enters the premixer 12 through the first premixer feed pipe 2;

[0051] The premixer 12 includes a premixer housing 29 (upper end cap), and the side wall of the premixer housing 29 is provided with a first dosing pipe 18, a second dosing pipe 16 and a third dosing pipe 14 in sequence from bottom to top;

[0052] The second premixer feed pipe 30 is disposed on the side wall of the premixer housing 29, and the premixer housing 29 is connected to the discharge port of the ejector 3 through the second premixer feed pipe 30;

[0053] A premixer discharge pipe 10 is also provided on the side wall of the premixer housing 29, and the premixer discharge pipe 10 is above the second premixer feed pipe 30; a premixer drain pipe 4 is provided at the bottom of the premixer housing 29;

[0054] A circular support plate 27 is provided inside the premixer housing 29, and a plurality of through holes are provided on the support plate 27. The support plate 27 is located at the lower edge of the interface between the second premixer feed pipe 30 and the premixer housing 29; a vortex rotator is provided between the support plate 27 and the top wall of the premixer housing 29, and the vortex rotator includes a vertically arranged support rod 28, the support rod 28 is located on the central axis of the premixer housing 29, and the bottom end of the support rod 28 is connected to the support plate 27; a spiral partition is provided between the support rod 28 and the inner side wall of the premixer housing 29. Plate 26, the starting point of the bottom of the partition 26 is at the connection between the support rod 28 and the support plate 27, the end point of the top of the partition 26 is at the lower edge of the interface between the premixer discharge pipe 10 and the premixer shell 29, the No. 1 dosing pipe 18 is arranged on the side wall of the premixer shell 29 corresponding to the first circle of rotation of the partition 26, the No. 2 dosing pipe 16 is arranged on the side wall of the premixer shell 29 corresponding to the second circle of rotation of the partition 26, and the No. 3 dosing pipe 14 is arranged on the side wall of the premixer shell 29 corresponding to the third circle of rotation of the partition 26.

[0055] A first water blocking plate 23 is vertically arranged between two adjacent plates in the second circumference of the partition plate 26; a second water blocking plate 21 is vertically arranged between two adjacent plates in the third circumference of the partition plate 26; and a plurality of through holes are arranged on the first water blocking plate 23 and the second water blocking plate 21.

Claims

1. Oily wastewater continuous dosing and mixing system, characterized by: The invention comprises an air compressor (6), an air storage tank (8), a premixer (12), an ejector (3) and a first premixer feed pipe (2); the air inlet of the ejector (3) is connected to the air storage tank (8) through an air storage tank air outlet pipe (9), the feed port of the ejector (3) is connected to the first premixer feed pipe (2), and the discharge port of the ejector (3) is connected to the premixer (12) through a second premixer feed pipe (30); the air compressor (6) is connected to the air storage tank (8) through the air compressor air outlet pipe (1).

2. The continuous dosing and mixing system for oily wastewater according to claim 1 is characterized in that: The premixer (12) comprises a premixer housing (29), and a first dosing pipe (18), a second dosing pipe (16) and a third dosing pipe (14) are sequentially arranged on the side wall of the premixer housing (29) from bottom to top; A second premixer feed pipe (30) is arranged on the side wall of the premixer housing (29), and the premixer housing (29) is connected to the discharge port of the ejector (3) through the second premixer feed pipe (30); A premixer discharge pipe (10) is also provided on the side wall of the premixer housing (29), and the premixer discharge pipe (10) is above the second premixer feed pipe (30); a premixer drain pipe (4) is provided at the bottom of the premixer housing (29); A circular support plate (27) is arranged inside the premixer housing (29), and a plurality of through holes are arranged on the support plate (27). The support plate (27) is located at the lower edge of the interface between the second premixer feed pipe (30) and the premixer housing (29); A vortex rotator is arranged between the support plate (27) and the top wall of the premixer housing (29), and the vortex rotator includes a vertically arranged support rod (28), the support rod (28) is located on the central axis of the premixer housing (29), and the bottom end of the support rod (28) is connected to the support plate (27); a spiral partition (26) is arranged between the support rod (28) and the inner side wall of the premixer housing (29), and the starting point of the bottom of the partition (26) is at the connection between the support rod (28) and the support plate (27), and the partition (26) ) The end point at the top is at the lower edge of the interface between the premixer discharge pipe (10) and the premixer shell (29), the No. 1 dosing pipe (18) is arranged on the side wall of the premixer shell (29) corresponding to the first circle of rotation of the partition (26), the No. 2 dosing pipe (16) is arranged on the side wall of the premixer shell (29) corresponding to the second circle of rotation of the partition (26), and the No. 3 dosing pipe (14) is arranged on the side wall of the premixer shell (29) corresponding to the third circle of rotation of the partition (26).

3. The continuous dosing and mixing system for oily wastewater according to claim 2 is characterized in that: A first water blocking plate (23) is vertically arranged between two adjacent layers of plates in the second circumference of the rotation of the partition plate (26); a second water blocking plate (21) is vertically arranged between two adjacent layers of plates in the third circumference of the rotation of the partition plate (26); and a plurality of through holes are arranged on the first water blocking plate (23) and the second water blocking plate (21).

4. The continuous dosing and mixing system for oily wastewater according to claim 2 is characterized in that: The No. 1 dosing pipe (18) is provided with a No. 1 dosing hand valve (17), the No. 2 dosing pipe (16) is provided with a No. 2 dosing hand valve (15), and the No. 3 dosing pipe (14) is provided with a No. 3 dosing hand valve (13); The premixer exhaust pipe (4) is provided with an exhaust solenoid valve (5).

5. The oily wastewater continuous dosing and mixing system according to claim 2 is characterized in that: The second premixer feed pipe (30) is provided with a feed sampling pipe (25), and the feed sampling pipe (25) is provided with a feed sampling valve (24); the premixer discharge pipe (10) is provided with a discharge solenoid valve (11) and a discharge sampling pipe (20), and the discharge sampling pipe (20) is provided with a discharge sampling valve (19).

6. The oily wastewater continuous dosing and mixing system according to claim 2 is characterized in that: An inspection port (22) is provided on the side wall of the premixer housing (29).

7. The oily wastewater continuous dosing and mixing system according to claim 1 is characterized in that: The first premixer feed pipe (2) is provided with a feed solenoid valve (7).

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