KR100583432B1 - Parallel operation apparatus for oil/water separator - Google Patents

Abstract

The present invention is a device for transferring the water waste oil or water oil of the storage tank to the transfer pump (16) for treatment with oil and water separators: respectively installed on the parallel front pipe (15), each inlet valve (11) ( 21, a pair of filtration tanks 10 and 20 having outlet valves 12 and 22 and air vent valves 13 and 23; The inlet valves 31, 41, water outlet valves 32, 42, and air are respectively provided on the rear pipes 25 connected to the front pipes 15 through the connecting pipes 26. A pair of oil / water separation tanks 30 and 40 having vent valves 33 and 43 and oil outlet valves 34 and 44; Detection means installed to detect the pressure of the filtration tanks 10 and 20 and to detect the pressure of the oil-water separation tank 30 and 40 and the oil-water boundary; And a controller 60 for selecting at least one side of the filtration tanks 10 and 20 and at least one side of the oil / water separation tanks 30 and 40 according to the input of the detection means and the set conditions.

Accordingly, it is easy to adjust the processing capacity in accordance with the situation of various industrial sites, and there is an effect of improving the processing efficiency since the operation is not interrupted even during repair of a part.

Oil Separation, Parallel, Filtration Tank, Filter, Water Waste Oil

Description

Parallel operation apparatus for oil / water separator}

1 is a front view of a device according to the invention,

2 is a plan view of a device according to the invention,

3 is a block diagram showing the main circuit of the apparatus according to the present invention;

4 is a front view showing a controller according to the present invention;

5 is a flowchart illustrating the operation of a controller according to the present invention.

Explanation of symbols on the main parts of the drawings

10, 20: filtration tank 11, 21, 31, 41: inlet valve

12, 22, 32, 34, 42, 44: outlet valve

13, 23, 33, 43: air vent valve 30, 40: oil / water separator

51-56: pressure sensor 57, 58: interface detector

60: controller 61: microcomputer

62: operation lamp 63: alarm lamp

65: terminal box

The present invention relates to a parallel operation apparatus of an oil / water separator, and more particularly, to a parallel operation apparatus of an oil / water separator that is easy to adjust the processing capacity in accordance with the situation of various industrial sites and does not stop during maintenance. will be.

In general, water-containing waste oil is used not only in the manufacturing and distribution industries of petroleum products such as oil refineries, oil storage bases, gas stations, but also in all industries that use petroleum products such as electric power, steel, machinery, and chemical manufacturing industries, and transportation including ships. It is being discharged. In addition, water oil is generated in the food industry, restaurants, and homes. When the waste water or oil is discharged as it is, the soil and groundwater, rivers, lakes, and the sea are not only seriously polluted, but also flammable and ignitable, causing social and economic losses due to fire. Accordingly, water waste oil and water oil are regulated by laws such as the Waste Management Act, the Water Quality Preservation Act, and the Marine Pollution Prevention Act to ensure proper disposal.

In this regard, conventionally, various kinds of oil-water separation devices have been developed and applied according to separation methods such as gravity flotation, pressure flotation, filtration and adsorption, but sometimes untreated hydrous waste oil or hydrous oil is sometimes insufficient due to insufficient treatment. There is a problem of discharge. For example, the conventional gravity flotation oil-water separator is simple and easy to repair, but has very low resolution, and it is impossible to remove the neutralized water wastewater and the emulsified oil, and it is exposed to the atmosphere and generates a large amount of odor. There are disadvantages.

As another conventional technique to compensate for these disadvantages, the "splitting and removing device of oil" of Japanese Patent Laid-Open No. 56-76211 and the "plate filter" of the Republic of Korea Patent Publication No. 2002-24008 by the applicant The oil-water separator equipped with the module "discloses a device for separating oil-water continuously using a filter on a series of pipe lines.

However, the above apparatus is installed on the basis of the amount of water and waste oil treated in a certain industrial site, but the amount actually processed is not constant, and the change is large, so it is often far below or exceeded the capacity of the facility. Moreover, if the timing of the backwash operation to prevent filter clogging is not monitored from time to time, it may be necessary to temporarily shut down when the processing operation is required.

Accordingly, the present invention is directed to the above-mentioned point, and an object of the present invention is to provide an apparatus for parallel operation of an oil / water separator that is easy to adjust the processing capacity in accordance with the situation of various industrial sites and does not stop operation even while repairing a part. do.

In order to achieve the object of the present invention, the present invention is a device for transferring the waste oil or water oil of the storage tank to the transfer pump 16 to be treated with an oil and water separator: each installed on the parallel front pipe, each inlet valve, A pair of filtration tanks having an outlet valve and an air vent valve; A pair of oil / water separation tanks installed on the rear pipes connected to the front pipes through the connection pipes, each having an inlet valve, a water outlet valve, an air vent valve, and an oil outlet valve; Detecting means for detecting the pressure of the filtration tank and detecting the pressure of the oil / oil separation tank and the oil / water interface; And a controller for selecting at least one side of the filtration tank and at least one side of the oil / water separation tank according to the input of the detection means and the set condition.

As another feature of the present invention, the detecting means includes a front pressure sensor installed on the filtration tank, an upper pressure sensor and a lower pressure sensor installed up and down on the oil / water separation tank, and an interface detector installed on the oil / water separation tank.

As another feature of the present invention, the controller is provided with a microcomputer, an operating lamp, an alarm lamp, and a mode switch, wherein the microcomputer opens and changes the flow path of the filtration tank and the oil / water separation tank according to the pressure abnormality of the front pressure sensor. As the throughput of the pump increases, the channels of all the filtration tanks and the oil / water separation tank are opened.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a front view showing a device according to the invention, and FIG. 2 is a plan view showing a device according to the invention.

The present invention relates to an apparatus for transferring water waste oil or water oil in a storage tank to a transfer pump 16 for treatment with a oil / water separator. The oil / water separator is installed to be connected to the storage tank and the pipeline, and the transfer pump 16 is installed upstream of the oil / water separator. The transfer pump 16 may be operated manually at the discretion of the operator, or may be automatically operated according to a predetermined condition such as the level of the storage tank.

According to the present invention, a pair of filtration tanks 10, 20 having respective inlet valves 11, 21, outlet valves 12, 22, and air vent valves 13, 23 are parallel in front. It is installed on the pipe 15, respectively. On the one side flow path of the front pipe 15, the first filtration tank 10 is installed through the inlet valve 11 and the outlet valve 12, and on the other side flow passage, the second filtration tank 20 is the inlet valve 21 and the outlet. It is installed via the valve 22. The filtration tanks 10 and 20 are divided into upper and lower spaces and have a structure in which a filter is installed. The upstream end of the front pipe 15 is connected to the lower space of the filtration tanks 10 and 20, and the downstream end is connected to the upper space of the filtration tanks 10 and 20. Accordingly, the filtration is performed while flowing upward in the filtration tanks 10 and 20.

In addition, according to the present invention, as long as the inlet valves 31 and 41, the water outlet valves 32 and 42, the air vent valves 33 and 43, and the oil outlet valves 34 and 44 are provided. A pair of oil and water separation tanks 30 and 40 are respectively installed on the rear pipes 25 connected to the front pipes 15 via the connecting pipes 26. The rear pipe 25 is composed of a parallel circuit via one connecting pipe 26 at the downstream end of the front pipe 15. On the one side flow path of the rear pipe 25, the first oil and water separation tank 30 is installed via the inlet valve 31, and on the other side flow path, the second oil and water separation tank 40 is installed through the inlet valve 41. Each oil and water separation tank 30 and 40 includes water outlet valves 32 and 42 and oil outlet valves 34 and 44 in addition to air vent valves 33 and 43. In the case of oil-water separation tanks 30 and 40, the filter module is installed in a portion divided into upper and lower spaces, such as the filtration tanks 10 and 20, and the filtration is performed in an upward flow.

At this time, all the above valves use a solenoid valve that is opened and closed by a solenoid, in particular a double-acting type that can be self-holding (Self Holding) by two solenoids is more preferred. And it is not necessarily limited to the two-position on-off valve as shown, it is also possible to use a three-position or four-position valve.

In addition, according to the present invention, the detection means is provided to detect the pressure of the filtration tanks 10 and 20, and to detect the pressure of the oil-water separation tanks 30 and 40 and the flowing water interface. The detection means includes a front pressure sensor (51) (52) installed on the filtration tank (10) 20, upper pressure sensor (53) (55) installed up and down on the oil-water separation tank (30) (40) and Lower pressure sensors 54 and 56 and interface detectors 57 and 58 provided on the oil / water separation tanks 30 and 40 are provided.

As shown in FIG. 1, in consideration of the configuration in which the filtration tanks 10 and 20 flow upward, the air vent valves 13 and 23 are installed to communicate with the upper space of the filtration tanks 10 and 20, while the front pressure is maintained. The sensors 51 and 52 are installed to communicate with the lower spaces of the filtration tanks 10 and 20. In the case of the oil / water separation tanks 30 and 40, the air vent valves 33 and 43 are installed to communicate with the upper space, but the upper pressure sensors 53 and 55 are disposed in the upper space and lower in the lower space. Pressure sensors 54 and 56 are installed to communicate with each other.

At this time, according to the present invention, the interface detectors 57 and 58 are installed to communicate the upper spaces of the oil / water separation tanks 30 and 40. The interface detectors 57 and 58 use a method of generating a linear signal corresponding to an interface between oil and water (oil layer thickness) by using a change in permittivity of the fluid. And the detection range is good to reach at least 50% of the height of the upper space from the top of the oil-water separation tank (30) (40).

The present invention also includes a controller 60 for selecting at least one side of the filtration tanks 10 and 20 and at least one side of the oil / water separation tank 30 and 40 according to the input of the detection means and the set conditions. The controller 60 is installed in the same remote place as the management room, and is connected via the terminal box 65 locally. The controller 60 includes a microcomputer 61, which will be described later, converts the analog signal of the detection means into a digital signal, performs a control algorithm, and displays information such as pressure and flow rate. Of course, it is also possible to omit the terminal box 65 and to install the controller 60 locally.

Figure 3 is a block diagram showing the main circuit of the device according to the invention, Figure 4 is a front view showing the controller according to the invention, Figure 5 is a flowchart showing the operation of the controller according to the invention.

The controller 60 includes a microcomputer 61, an operation lamp 62, an alarm lamp 63, and a mode switch 64. As shown in FIG. 4, an operation lamp 62 and an abnormality are generated to indicate whether the current operation is performed together with the respective marks corresponding to the pair of filtration tanks 10 and 20 and the pair of oil / water separation tanks 30 and 40. Alarm lamps (63) are placed side by side to indicate that the operation is completed. Of course, it is more preferable to arrange together with each pressure gauge 66. The mode switch 64 is an input means for selecting automatic operation and manual operation. In addition, a flow meter 67 may be provided to indicate the flow of the front pipe 15 and the rear pipe 25.

In FIG. 3, the overall state connected to the input / output port of the microcomputer 61 is shown. The input / output port constitutes an input / output interface circuit (not shown). The input / output interface circuit includes a converter for converting signals from the front pressure sensors 51, 52 and the boundary detectors 57, 58, and a driving circuit for receiving power from the microcomputer 61 and applying power to various valves. do. The terminal box 65 is a means for receiving an external signal such as an operation state of the transfer pump 16, and may include a pressure gauge 66, a flow gauge 77, and the like of FIG. 4.

At this time, the microcomputer 61 of the controller 60 changes the flow paths of the filtration tanks 10, 20 and the oil / water separation tank 30, 40 according to the pressure of the front pressure sensors 51, 52, and opens them. As the throughput of the transfer pump 16 increases, the flow paths of all the filtration tanks 10 and 20 and the oil / water separation tank 30 and 40 are opened. The operation of the filtration tanks 10 and 20 and the oil-water separation tank 30 and 40 on one side as in the former is a single operation mode, and all the filtration tanks 10 and 20 and the oil-water separation tank 30 and 40 as in the latter. Running is the parallel operation mode. In either case, impurities such as debris are removed from the filtration tanks 10 and 20, and the oil and water are attached to the oil through the filter module of the oil / water separation tank 30 and 40, and the oil and water of the subsequent oil and water impinge on the surface tension. By the association with each other by the same in the action of separating the oil and water.

In FIG. 5, when the mode switch 64 of the controller 60 is selected as 'automatic operation', the first single operation mode of step S10 is performed to allow the inlet valve 21 and the outlet valve 22 of the second filtration tank 20. ) And the inlet valve 41 and the oil outlet valve 44 of the second oil and water separation tank 40 are closed, so that the water waste oil flows into the first filtration tank 10 and the first oil and water separation tank 30. Of course, the air vent valves 13 and 33 are temporarily opened for a predetermined time or according to an input of a separate level switch (not shown) to perform air bleeding of the first filtration tank 10 and the first oil / water separation tank 30. Process. In response to receiving a signal from the boundary detector 57 of the first oil / water separation tank 30 and determining that the boundary layer of the oil water reaches the proper position, the air vent valve 33 is closed and the water outlet valve 32 and the oil outlet valve 34 are closed. Open) to start the oil / water separation operation.

Subsequently, in step S20, a signal is input from the front pressure sensor 51 of the first filtration tank 10 and the lower pressure sensor 54 of the first oil / water separation tank 30 to determine whether the pressure is abnormal, and it is determined that the pressure is abnormal. In step S30, the process switches to the second single operation mode. If the pressure in the front pressure sensor 51 of the first filtration tank 10 is greater than or equal to the set value, the inlet valve 11 and the outlet valve 12 are closed, and the inlet valve 21 and the outlet valve 22 on the opposite side are opened. The operating state of the second filtration tank 20 is switched. In this state, backwashing is performed on the first filtration tank 10 or the filter is checked or replaced. Switching from the first oil separation tank 30 to the second oil separation tank 40 is determined by the differential pressure between the upper pressure sensor 53 and the lower pressure sensor 54. For example, when the differential pressure is 3 atm or more, it is determined that the filter module of the first oil / water separation tank 30 is blocked.

At this time, the microcomputer 61 displays the operation switching state of the filtration tank 10, 20 and the oil-water separation tank 30, 40 through the operation lamp 62 and the alarm lamp 63 of FIG. The microcomputer 61 includes a program to operate the alarm lamp 63 at a corresponding position while checking a specific filtration tank 10, 20 or oil / water separation tank 30, 40 so as not to be arbitrarily operated.

In step S40, it is determined whether the throughput increases above the set value, and if so, the parallel operation mode is performed in step S50. The determination of the increase in throughput may use a water level signal or a flow meter signal of the storage tank. The parallel operation mode is a state in which both the flow paths of the filtration tanks 10 and 20 and the oil / water separation tank 30 and 40 are opened, and it is determined frequently at step S40 to switch to the previous state when the throughput is within the set value. Whether the previous state is the first single operation mode or the second single operation mode refers to the data stored on the memory of the microcomputer 61. Of course, if one side of the filtration tank (10) 20 or the oil-water separation tank (30) 40 is being inspected, the start of the parallel operation mode can be delayed.

It is apparent to those skilled in the art that the present invention is not limited to the described embodiments, and that various modifications and variations can be made without departing from the spirit and scope of the present invention. Therefore, such modifications or variations will have to belong to the claims of the present invention.

According to the configuration and operation of the present invention described above, it is easy to adjust the processing capacity in accordance with the situation of various industrial sites, and there is an effect of improving the processing efficiency since the operation is not interrupted even during repair.

Claims (3)

In the apparatus for transferring the water waste oil or water oil of the storage tank to the transfer pump (16) to be treated with an oil / water separator: A pair of filtration tanks respectively provided on the parallel front pipes 15 and having respective inlet valves 11 and 21, outlet valves 12 and 22, and air vent valves 13 and 23. 10) (20); The inlet valves 31, 41, water outlet valves 32, 42, and air are respectively provided on the rear pipes 25 connected to the front pipes 15 through the connecting pipes 26. A pair of oil / water separation tanks 30 and 40 having vent valves 33 and 43 and oil outlet valves 34 and 44; Detection means installed to detect the pressure of the filtration tanks 10 and 20 and to detect the pressure of the oil-water separation tank 30 and 40 and the oil-water boundary; And And a controller 60 for selecting at least one side of the filtration tanks 10 and 20 and at least one side of the oil / water separation tanks 30 and 40 according to the input of the detection means and the set conditions. Parallel operation device. The method of claim 1, The detection means includes a front pressure sensor (51) (52) installed on the filtration tank (10) 20, upper pressure sensor (53) (55) installed up and down on the oil-water separation tank (30) (40) and And a lower pressure sensor (54) (56) and an interface detector (57) (58) provided on the oil / water separation tank (30) (40). The method of claim 1, The controller 60 is provided with a micom 61, the operation lamp 62, the alarm lamp 63, the mode switch 64, the micom 61 is more than the pressure of the front pressure sensor (51) (52) According to the change of the flow path of the filtration tank 10, 20 and the oil-water separation tank 30, 40, and open, and according to the increased throughput of the transfer pump 16, all the filtration tank 10, 20 and oil-water separation tank 30 Parallel operation device of the oil-water separator, characterized in that the opening of the passage (40).

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