CN205442720U - Water oil separating controlling means - Google Patents

Abstract

The utility model provides a water oil separating controlling means, is including gathering grease chamber (1), oil collecting chamber (3), coarse grain component filter core (2), buckled plate group (4), electrical plunger pump (6), screw pump (11), electric heater (8), oily collecting box (7) and pipeline valve gate, installation coarse grain component filter core (2) in the grease chamber (1) gathers in installation buckled plate group (4) in the oil collecting chamber, electrical plunger pump (6) through piping erection between oil collecting chamber and oily collecting box (7), screw pump (11) are through piping erection at oil collecting chamber and gather between the grease chamber (1), installation electric heater (8) in oil collecting chamber (3). The beneficial effect of the utility model: water oil separating is thorough, avoids oil collecting chamber's oil to condense, has characteristics such as efficient, compact structure, use are reliable, convenient operation.

Description

An oil-water separation control device

technical field

The utility model relates to an oil-water separation device, which is suitable for the treatment of oily sewage in industries such as petroleum, chemical industry, machinery, iron and steel, traffic, transportation, and docks.

Background technique

As we all know, with the development of social productivity and the improvement of science and technology, the threat of environmental pollution to human survival and development has attracted people's attention. In order to protect human health and maintain ecological balance, various measures to control environmental pollution have emerged in large numbers. Since there are many types of oily wastewater and a wide range of sources, the equipment and methods used for treatment are also different. Generally, according to the water quality and purification requirements, the corresponding oily wastewater treatment process and equipment are selected.

In view of the increasing amount of domestic oil extraction wastewater, the discharge rate of oil extraction wastewater discharged into the environment is low. The oil product is mineral oil with a specific gravity of 0.84-0.93. The existing "oil separation-filtration" and "oil separation-floating Selection (or cyclone degreasing)-filtration" treatment process, the COD treatment effect is poor, especially for the treatment of high-viscosity oil production wastewater is more difficult, the use of "air flotation pretreatment-batch reactor (anaerobic-aerobic)-sedimentation, activated sludge method and other biological treatment technologies and ozone oxidation method, as the treatment technology that should be considered first in the future discharge of oil production wastewater in the oil field, and the complete set of filtration technology will also have a negative impact on general oil production wastewater Better processing effect and other solutions.

The new technological process, new technology and new equipment adopted in the field of produced water treatment in foreign countries in recent years are systematically introduced. The structures used in foreign oilfield oily wastewater treatment mainly include: grit chamber, API grease trap, CPI grease trap, natural degreasing tank, coagulation degreasing tank, coarse graining tank, pressure settling tank, flotation tank (column ), pressure filter tank, single valve filter tank, combined treatment device, hydrocyclone separator and filter, etc. The auxiliary facilities used include: various buffer tanks (pools), recovery water tanks (pools), backwash water tanks (pools), dirty oil tanks, chemical dosing systems, various water pumps and oil-water metering facilities, etc. According to the requirements of oil extraction wastewater and purified water quality, various oil extraction wastewater treatment processes can be formed by using the above-mentioned structures and auxiliary facilities. The foreign oil production wastewater treatment process has changed from the original oil separation-coagulation-filtration technology to oil separation-coagulation air flotation-biochemical-filtration technology. The adoption of air flotation and biochemical technology has become a symbol of the advanced oil production wastewater treatment process in recent years.

However, the above-mentioned existing domestic and foreign oil production wastewater treatment technologies still fail to solve the problem of oily wastewater treatment of high-viscosity oil production wastewater and low-oil and high-salt reinjection water. The dominant degrading bacteria used in the domestic activated sludge process need to be screened and domesticated under certain conditions. Only by creating a good living environment can an ecosystem with degradative effects be produced. Its harsh conditions, complex process, large footprint, troublesome operation, high operating costs, and strict requirements for operation management affect its popularization and application. The adoption of foreign biochemical technology also needs to be carried out under certain conditions, the processing cycle is long, the operation management is stricter, the labor union efficiency is low, and the investment is large, which is not suitable from the economic point of view. Therefore, it has become an urgent desire for those skilled in the art to seek a simple, fast, easy-to-manage, low-cost, and high-efficiency method to solve the above-mentioned governance problems.

Utility model content

The purpose of this utility model is to provide a new type of oil-water separation control device, which has the advantages of simple processing process, easy operation, convenient management, improved processing efficiency, reduced construction investment and floor space, energy saving, low operating cost, and high processing effect. Significant, wide adaptability and other characteristics, to achieve the standard discharge of external drainage, which is conducive to protecting human health, maintaining biological balance, and improving environmental quality.

The technical scheme of the present invention is an oil-water separation control device, which includes an oil-collecting chamber (1), an oil-collecting chamber (3), a coarse-grained element filter element (2), a corrugated plate group (4), an electric plunger pump (6), screw pump (11), electric heater (8), oil collection box (7) and pipeline valves; corrugated plate group (4) is installed in the oil collection chamber, and coarse-grained components are installed in the oil collection chamber (1) The filter element (2); the electric plunger pump (6) is installed between the oil collection chamber and the oil collection box (7) through the pipeline, and the screw pump (11) is installed between the oil collection chamber and the oil collection chamber (1) through the pipeline ; Electric heater (8) is also installed in the oil collection chamber (3).

Further, a safety valve is also installed on the outlet pipeline of the screw pump. The adjusted opening pressure of the safety valve is 0.245MPa.

The working process of the utility model: the oily sewage is inhaled by vacuum, enters the shell (3), and then enters the corrugated plate group (4), and the oil droplets in the water are polymerized and floated to the oil collecting chamber (1) of the device. Most of the oil will be separated. After passing through the corrugated plate group (4), the water contains tiny oil particles. The sewage containing tiny oil particles is discharged from the screw pump into the coarse granulation chamber (1) for coarse granulation. After the tiny oil particles in the water are coarse-grained, the oil content in the water can be reduced to less than 5 mg/L, and then discharged.

Put oil collecting chamber (1), oil collecting chamber (3) coarse-grained element filter (2), corrugated plate group (4), electric plunger pump (6), screw pump (11), electric heater (8) , oil collection box (7) and various valves are assembled into a whole.

In the oil collection chamber of the device, a liquid level electrode is installed. When the oil level reaches a certain high level, the liquid level electrode sends out a signal, and the control box automatically starts the oil discharge electric plunger pump (6) to discharge the oil to the oil collection tank (7 ), when the oil level reaches the low level, it can stop automatically. In order to avoid oil spillage, a liquid level gauge is also installed when the oil is collected. Drain the oil collection tank (7) through the oil discharge outlet (10) for incineration.

The diameter of the water inlet is DN65-150mm, the diameter of the drain is DN65-150mm, the diameter of the oil discharge is DN25-50mm, and the diameter of the discharge port is DN50 for the first grade and DN25 for the second grade;

Each device is equipped with an electric heater (8) and a temperature controller. If it needs to be used (generally when the air temperature is below 5°C, or when separating oils with high viscosity), you only need to put the temperature controller on the Adjust the indicator needle to the specified temperature, and the electric heater can be automatically turned on and off within the specified temperature range without human operation (if the water in the device is not full, it will automatically stop working to prevent the electric heater from burning) Oil-water separation control device The processing capacity is 10-100m ³ /h, the maximum working pressure is less than 0.245MPa, and the vacuum suction height of the device is less than or equal to 5M.

The beneficial effects of the utility model: the oil-water separation is thorough, avoiding the oil condensation in the oil collection chamber, having the characteristics of high efficiency, compact structure, reliable use, convenient operation, etc. Various oily sewage treatment of industrial and mining enterprises such as transportation and power generation.

Description of drawings

Fig. 1 is a structural schematic diagram of the oil-water separation control device of the utility model.

detailed description

Referring to the accompanying drawings: the device is designed according to the principle of gravity separation. As shown in the figure, the oil collecting chamber (1), the coarse-grained element filter element (2), the oil collecting chamber (3), the corrugated plate group (4), the heating element (5), the electric plunger pump (6), the oil The collection box (7), the electric heater (8), the metering port of the oil collection chamber (9), the oil discharge outlet of the oil collection box (10), the screw pump (11), and the pipeline valve; the corrugated plate group ( 4), the coarse-grained element filter element (2) is installed in the oil collection chamber (1); the electric plunger pump (6) is installed between the oil collection chamber and the oil collection box (7) through the pipeline, and the screw pump (11) passes through The pipeline is installed between the oil collection chamber and the oil collection chamber (1); an electric heater (8) is also installed in the oil collection chamber (3).

The electrical control box, electric plunger pump, screw pump, electric heater and various valves are assembled into a whole. The shells of the oil collecting chamber (1) and the oil collecting chamber (3) are made of carbon steel, and the inner wall is coated with a corrosion-resistant coating.

The corrugated plate group is assembled by multiple pieces of epoxy cloth fiberglass tiles with the same specification and different corrugated shapes, which are used for primary gathering and separation of oily components and impurity components in oily water.

The coarse-grained element is specially made of high-molecular polymer fiber, which has good oil absorption and desorption properties, so that the oil content in the treated water is less than 5 mg/L, and has a long service life.

The water absorption of the oil-water separator adopts the electric screw pump, and the oil discharge adopts the electric plunger pump. The working performance is reliable.

In order to meet the needs of dealing with fuel oil and oil with high viscosity, and to facilitate the smooth discharge of the separated oil in colder climates, the device is also equipped with an electric heater. The device can also be equipped with accessories such as an automatic monitoring alarm for the concentration of discharged water and oil, a pressure relay, a liquid level float switch in the sedimentation tank, and a back pressure valve at the water outlet according to the needs of the user, so that the device can operate fully automatically.

The working principle of the oil-water separator is mainly a physical method of gravity separation using the density difference of oil and water.

The device uses vacuum to suck oily sewage, and then enters the corrugated plate group, and the oil droplets in the water are polymerized and float to the oil collecting chamber of the device. Most of the oil will be separated. After the corrugated plate group, the water contains tiny oil particles. The sewage containing tiny oil particles is discharged from the screw pump into the coarse granulation chamber for coarse granulation. After the tiny oil particles in the water are coarse-grained, the oil content in the water can be reduced to less than 5 mg/L, and then discharged.

In the oil collection chamber of the device, a liquid level electrode is installed. When the oil level reaches a certain low level, the liquid level electrode sends out a signal, and the control box automatically starts the oil discharge electric plunger pump to discharge the oil to the oil collection tank. When it is high, it can stop automatically. In order to avoid oil spillage, a liquid level gauge is also installed when the oil is collected.

When the device is used in low temperature areas or ports, in order to avoid oil condensation in the oil collection chamber, an electric heater is also installed in the oil collection chamber of the oil-water separator. The switch of the electric heater is automatically controlled by the temperature regulator, and the maximum heating temperature is generally 45°C.

Oil and sewage enter the separation chamber. Due to the large wet area of the coarse-grained element and the low flow velocity, they gather into larger oil droplets and float to the top oil collection chamber. The oil droplets with smaller particles enter the second and third coarse In the granulation device, due to the special polymerization function of the coarse granulation element, the residual fine oil droplets are coalesced into larger oil droplets and then separated from the water, rising to the top oil collection chamber. The clean water at the bottom is discharged from the discharge port.

The dirty oil coalesced in the first and second stage oil collection chambers passes through the oil level detector, and the automatic oil discharge device and the oil discharge valve realize the automatic discharge of the dirty oil. The coarse-graining device after the third stage belongs to the fine separation system, and the amount of dirty oil is very small, and the oil can be drained manually and regularly. In order to ensure the separation of high-viscosity dirty oil and to discharge it smoothly from the dirty oil tank, electric heating devices are installed in the first and second separation chambers, and are automatically controlled to keep the temperature at 25°C to 50°C. within ℃.

According to the level of oil and sewage water in the sewage pool, it will automatically start and close. The user can make a request according to the needs, and configure a UGK-15 float level controller to realize automatic operation. Users can also install an oil concentration meter as needed to automatically monitor whether the discharge water meets the discharge standard and meet the discharge; when the standard is reached, it will be discharged automatically without manual inspection.

In general, the installation of this device should be arranged according to the system diagram, but during the installation process, the following points must be paid special attention to: the pre-pump filter supplied with the plunger pump must be installed before the plunger pump; the clear water pipeline should be installed for flushing Maintenance; the oil and sewage suction port on the pipeline of this device should be at a certain distance from the bottom of the pool, generally not less than 200mm; on the suction pipeline in front of the pump, the user should install a vacuum gauge by himself to observe the work of the pump Conditions (prepared by the user); the water inlet pipeline system should strictly prevent air leakage, and minimize pipeline resistance caused by elbows, etc.; the shorter the oil discharge pipeline, the better, and the dirty oil tank should be as close as possible to and lower than the device; The control box cannot guarantee that the pump will automatically stop when it is empty, so as to prevent the water pump from being empty.

Claims (2)

1. an oil-water separation controller, is characterized in that including poly-grease chamber (1), gathering room (3), coarse element cartridge (2), corrugated plating group (4), electrical plunger pump (6), screw pump (11), electric heater (8), oil collecting box (7) and pipeline valve；Oil-collecting indoor location corrugated plating group (4), installs coarse element cartridge (2) in poly-grease chamber (1)；Electrical plunger pump (6) is by Pipe installing between gathering room and oil collecting box (7), and screw pump (11) passes through Pipe installing between gathering room and poly-grease chamber (1)；Electric heater (8) is installed in gathering room (3).

Oil-water separation controller the most according to claim 1, is characterized in that it is 0.245MPa that pressure is opened in the adjustment of relief valve equipped with relief valve on the outlet pipeline of screw pump.