CN111646595A - Oil field extraction water treatment simulation experiment device - Google Patents

Abstract

The invention relates to an oil field produced water treatment simulation experimental device. The oil field produced water treatment simulation experimental device includes a raw water preparation device, a natural sedimentation device, a coagulation sedimentation device, a pressure boosting buffer device, a filtration backwash device, and a medicine dispensing device. , sewage oil recovery device, sludge sewage treatment device, remote control displacement device, alarm device, console, simulate the actual natural settlement effect through the natural settling device, and achieve the effect of secondary coagulation and settling through the dosing process. The input parameters are used to control the amount of chemicals added in real time, so as to achieve more precise control; the pressure boosting buffer device stabilizes the mixed liquid with unstable pressure and flow rate flowing from the upstream within a range, and the filter backwash device is effective for oily sewage. further separation. The present invention achieves the water quality standard of reinjection water or external drainage by simulating the oily sewage treatment system produced in the oil field, and adjusting the flow rate, pressure and settling time of the influent water.

Description

A simulation experiment device for oil field produced water treatment

technical field

The invention relates to an experimental device for researching oilfield produced water treatment, in particular to a simulation experimental device for oilfield produced water treatment.

Background technique

In oilfields exploited by water injection, most of the water injected into the oil layer from the water injection wells returns to the ground together with the crude oil through the oil extraction wells. This part of the water must be removed before the crude oil is transported out. Therefore, it is called oilfield produced water. With the development of the oil field, the water content of the water production fluid has been rising, and some blocks have reached more than 90%. These oily sewage has become the main water source for water injection in the oil field. With the continuous development of low-permeability oilfields and off-surface reservoirs in the periphery of the oilfield, the requirements for the water quality of oilfield injection are more stringent. Oilfield sewage mainly includes crude oil dehydration water (also known as oilfield produced water), drilling sewage and other types of oily sewage in the station. There are many ways to treat oilfield sewage according to oilfield production, environment and other factors. When the oilfield needs water injection, the oilfield sewage is reinjected into the formation after treatment. At this time, many indicators such as suspended solids and oil in the water should be strictly controlled to prevent them from causing damage to the formation. The daily water injection in domestic oilfields is very large, so the oily sewage that needs to be treated is also very large, and the energy consumption is also very serious. In order to save energy and control the process of sewage treatment more effectively, it is necessary to simulate and optimize the oilfield sewage treatment system. Analysis to carry out the scheduling of each link, but the actual oilfield sewage treatment system is relatively large, the structure is complex, and the control of each link is difficult, so it is very difficult to use the actual sewage treatment process equipment to conduct experiments. On the other hand, it is imperative to optimize and analyze the oily sewage treatment system. Therefore, a set of oilfield produced water treatment simulation experimental device is established. By optimizing the design and improvement of the simulated sewage treatment experimental device, the actual sewage treatment system can be analyzed. is a feasible method.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide an oil field produced water treatment simulation experimental device, which is used to solve the problem that it is very difficult to use actual sewage treatment process equipment to conduct experiments, model modeling and formulate optimization plans.

The technical scheme adopted by the present invention to solve the technical problem is as follows: the oil field produced water treatment simulation experimental device includes a raw water preparation device, a natural sedimentation device, a coagulation sedimentation device, a pressure boosting buffer device, a filter backwash device, a medicine dispensing device, a sewage treatment device, and a sewage treatment device. Oil recovery device, sludge sewage treatment device, automatic cleaning device, remote control displacement device, alarm device, console, natural settling device includes natural settling tank, and the natural settling tank is provided with water inlet and water distribution structure, water collecting structure, oil collecting structure, Drainage structure and sludge treatment structure. The water inlet and water distribution structure includes the water inlet part and the water distribution part. An electric control valve is set at the water inlet of the water inlet part to control the flow rate and flow of the influent water, and a flow meter and a flow meter are installed around the electric control valve. Pressure gauge; the water distribution part has multiple water distribution ports, each water distribution port is equipped with an electric control valve, each water distribution port is provided with a filter head, and the filter head is connected to an automatic loading and unloading device. The automatic loading and unloading device is used to transfer the filter head covered with dirt Go to the cleaning area for cleaning, and then send it back to the water distribution port for re-installation. According to the data transmitted by the flow rate sensor and the pressure sensor, the flow rate of the water distribution part is controlled in real time on the console system interface; the water distribution part has an automatic frequency conversion stirring device. According to the speed of the water inlet The change of the signal of the pressure sensor changes the stirring frequency of the stirring device, so that the oily sewage is fully mixed before settling; the bottom of the settling tank has a sludge collection port, which is connected to the negative pressure suction system; the side of the natural settling tank is set up. Wall washing and scraping device, the side wall washing and scraping device is connected to the automatic lifting component, and the side wall washing and scraping device is sent to the bottom of the natural settling tank by the automatic lifting component for washing; throttling speed regulating electric control valve is installed on the water outlet pipeline; under the natural settling tank Air flotation equipment is installed, and the air flotation equipment is installed on the support frame structure. There are pulleys on both sides of the support frame structure. The pulleys are in contact with the rails, and the rails are installed on both sides near the tank wall; the oil collection structure is an oil collection tank, an oil collection tank There is an oil outlet weir near the oil layer. The oil outlet weir is triangular in shape. There is a circle of thin plates on the inner wall of the oil outlet weir. The thin plates are installed on the slideway. A heating coil is designed at the bottom of the oil collecting tank. ; The natural sedimentation tank is provided with 4 sampling ports from top to bottom, each sampling port is equipped with a sampling device, a sampling port is set at the position where the oil and water are in contact, a sampling port is set deeper down, and then the natural sedimentation is set downward. A sampling port is set in the middle of the tank, and finally a sampling port is set between the solid and liquid phases. A stop valve is installed at the outlet of each sampling port, and the other end of the stop valve is connected to a hose, and the hose is connected to a sampling container;

The coagulation settling device has one more inclined plate structure than the natural settling device. The inclined plate structure is composed of a plurality of plastic corrugated plates. The plastic corrugated plates are horn-shaped. There is a fixed connection structure between two adjacent plastic corrugated plates, the inclined plate is placed on the support structure, and the upper part of the inclined plate is provided with a lifting ring;

The booster buffer device includes a cylinder body, an alarm device, and a filter screen. The filter screen is detachably arranged at the bottom of the booster buffer device. A sewage outlet is arranged under the filter screen. The booster buffer device makes the upstream pressure and flow rate unstable. The liquid is stable within a range. A pressure sensor and a flow sensor are installed at a position half a meter away from the inlet of the cylinder. The right end of the cylinder is the outlet. The outlet is connected to the water outlet pipeline. Flow sensor and pressure sensor; there is a rectangular sealing port at the side wall of the cylinder close to the filter screen, and the cleaning and replacement of the filter screen is removed from the cylinder body through the cleaning and sealing port; according to the data transmitted by the pressure sensor and the flow sensor, the mixed liquid needs are determined During the dwell time of the buffer device, if the pressure and flow are too large, the alarm device will generate an alarm;

The filter backwash device includes a filter tank, an inlet water distribution device, a filter head screen structure, a filter material layer, a backing layer, a water collection mechanism, a layered frequency division stirring and pressure washing device, a sludge and dirt collection structure, and a backwash circuit structure. , pressure alarm, filter material layer replacement and cleaning structure, the filter material layer has three layers, the water collecting mechanism is the water distribution structure during backwashing, and the water collecting mechanism is composed of several pipes with nozzle holes. It will be discharged from the filter backwashing device through the water collecting structure. During backwashing, the backwashing water collecting mechanism will spray upward through the nozzle hole to complete the backwashing; the layered frequency division stirring and pressure washing device is used in each layer of the filter material layer. There is a corresponding stirring paddle. The size, number and inclination angle of each layer of stirring paddle are different. The stirring paddle is equipped with a pipe diameter device with small holes. When the stirring paddle rotates, clean water passes through at a certain pressure. The small holes are then sprayed into the filter material, so that the filter material can be further cleaned; the sludge and dirt collection structure is set at the bottom of the filter tank, the bottom of the filter tank is in the shape of an ellipsoid, and the bottom has a pit, and the bottom of the pit is installed automatically according to the pressure. The opening and closing valve mechanism, the scrub head is set close to the ellipsoid surface, and the scrub head scrapes the ellipsoid surface according to the set spiral track. After reaching the bottom, the dirt on the scrub head falls into the pit based on the action of gravity, and waits until the sediment After the weight reaches the set pressure value, the valve mechanism opens on its own.

In the above scheme, the console is connected to the mobile APP through the network to achieve further automation, and the operation of the entire system can be monitored remotely. Users can easily understand the operation of the entire system through the mobile client. Provide an alarm system. When the whole system device has an abnormal situation, the system will upload the abnormal situation to the mobile phone client, and promptly remind the customer that there is an emergency situation that needs to be dealt with.

In the above scheme, the dispensing device is provided with a plurality of free areas for placing medicines through the partition, each free area is in the shape of a cuboid, and both ends of each free area are provided with holes, one end is installed with an automatic adjustment valve, and the other end is connected with a The pipeline of the pump is connected, the automatic adjustment valve is connected with the control circuit, and the console controls the addition of a certain drug through the corresponding automatic adjustment valve; the upper and lower positions of each partition are equipped with liquid level sensors, which are used to adjust the liquid level. Level monitoring, when the liquid level is higher than the highest level or lower than the lowest level, the liquid level sensor will send a signal to the alarm system, informing the console to take emergency measures, when the liquid level is too high, close the automatic adjustment valve and stop the medicine For the replenishment of the warehouse, when the liquid level is displayed too low, the rotation speed of the pump will be increased, and the required medicine will be added to the medicine warehouse in time.

In the above scheme, the sludge sewage treatment device adopts an open cuboid iron box, the bottom is designed in the shape of a funnel, the sludge tank and the sewage tank are separated by a partition in the middle, the conical bottom is connected with the pipeline, and the conical bottom is connected with the pipeline. The valve is connected to a valve with a pressure sensor by means of a flange.

In the above scheme, the sewage oil recovery device is a sewage oil recovery tank. The tank body is divided into three layers, and each layer has a filter screen with different mesh sizes, so that the sewage oil can screen out some impurities in the process of sedimentation, and the oil can be discharged. There is also a filter screen at the mouth. A pressure sensor and an alarm device are installed near each filter screen. When too much impurities on a certain part of the filter screen cause the pressure here to rise, the alarm device will remind you to replace and clean the place. Filter screen; the inner wall of the tank is provided with a spiral heating pipeline from the top to the bottom. The top is the hot water inlet and the bottom is the hot water outlet. Due to changes in the environment, sometimes the oil in the tank flows slowly and cannot meet the processing requirements of the equipment. By increasing the temperature of the oil, the viscosity of the dirty oil can be reduced and the fluidity of the oil can be improved. The long-term use of the sewage oil recovery device will accumulate a large amount of oil pollution. The heating pipeline and the filter screen in the device can be lifted to the outside through the lifting ring for cleaning and replacement.

In the above scheme, the side wall washing and scraping device uses the rotating shaft of the automatic frequency conversion stirring device, and the rotating shaft is connected to the side wall washing and scraping device through the separation mechanism and the transmission mechanism. The scraping device is connected, the scrubbing intensity is adjusted by the frequency conversion pump, and the speed of the frequency conversion pump is adjusted through the signal control of the console, so that the scrubbing process is more flexible. Set up and down the mobile device.

In the above scheme, the sludge and dirt collection structure includes a scrubbing head and a spiral track. The scrubbing head is retractable and self-rotating. The cross section of the spiral track is rectangular. The scrubbing head includes a brush and a scrubbing head box. Small motor and scrub controller, two walking wheels are arranged on the side of the scrub head box, the scrub head box is provided with a track hole, the spiral track passes through the track hole, the scrub head box is slidably connected with the spiral track, and the start and end of the spiral track are set position sensor.

In the above solution, the water distribution pipe of the water inlet and water distribution device rotates slowly and uniformly around the central axis, which can make the water distribution more uniform.

In the above scheme, the filter material layer of the filter backwash device is divided into three parts, the particle size is getting larger and larger from top to bottom, the top filter material is fine sand with fine particle size, and the middle filter material is coarse sand with fine particle size , the bottom filter material is gravel with larger particle size, and the backing layer under the gravel supports the filter material layer.

In the above scheme, the layered and frequency-distributed stirring and pressurized flushing device is located in a three-layer stirring paddle, the top-layer stirring paddle has 8 paddles, the middle second-layer stirring paddle has 6 paddles, and the third-layer stirring paddle has 4 paddles .

The present invention has the following beneficial effects:

1. The present invention can simulate oily sewage with different components and different temperatures, fluid conditions at different speeds and pressures, as well as the length of time and speed required for natural sedimentation under different conditions, and the selection of pressure during filtration, as well as drug selection and dosing. How many proportions, etc., by adjusting the frequency of the pump and the strength of the pressure regulating device, thereby changing the speed of the water flow and the pressure, and changing the opening of the valve at the corresponding position through the console to change the flow rate and other measures to test, In order to obtain experimental data, obtain the best flow rate, pressure, time, drug ratio, dosing strength and other parameters, so as to achieve the best sewage treatment effect and maximize energy saving.

2. The actual oilfield sewage treatment system has a complex structure and a large area, and it is difficult to control and detect the entire system. Therefore, it is very difficult to use the actual sewage treatment process equipment to conduct experiments, model modeling and formulate optimization plans. So far, there is no ready-made theoretical method at home and abroad, and it cannot be solved by classical mathematics and optimization methods. The present invention is a novel simulation device capable of realizing automation and cloud service. It is suitable for observation, sampling analysis, data acquisition and optimization analysis of the system in the laboratory. It is a feasible method to analyze the actual sewage treatment system by optimizing the design and improvement of the simulated sewage treatment experimental device.

3. The present invention takes into account the problems that parameters such as the velocity and pressure of the fluid in each link, such as the sedimentation link, the pressure boosting buffer link, and the filtering and backwashing link, as well as the liquid residence time of each equipment, are difficult to control in the actual oilfield produced water treatment. By setting the flow and pressure sensors at the water inlet and outlet of each link, the data collected by these sensors can easily control the corresponding position. The system uses an electric control valve. Generally, the sensor settings are somewhat different. The required range parameters, once the data is abnormal, the electric control valve will receive the control signal from the console to carry out the next operation.

4. Sedimentation and filtration are the core components. The present invention designs an automatic frequency conversion stirring device and a layered stirring device. Through the stirring device, the corresponding speed and strength are adjusted according to the liquid under different conditions, so that the oil-containing liquid can have the most reasonable structure. Sufficient and uniform settling coagulation is carried out.

5. The present invention realizes the functions of automatic control and remote monitoring. Based on the small overall size of the equipment, the wireless transmission system is adopted. Based on the local area network technology, the parameters of each link that needs to be controlled are uploaded to the console and the mobile phone APP. When not on site, the entire system can also be monitored in real time through the mobile phone client.

Description of drawings

Figure 1a is a general assembly drawing of the present invention.

Figure 1b is a perspective view of the present invention.

Figure 2a is a general assembly drawing of the internal structure of the natural settling device of the present invention.

Figure 2b is a perspective view of the general assembly drawing of the internal structure of the natural settling device of the present invention.

FIG. 3 is a schematic structural diagram of the water inlet pipe in the water inlet part of the present invention.

4 is a schematic structural diagram of the central water collecting pipe of the water inlet part of the present invention.

Figure 5 is a schematic structural diagram of the water distribution pipe in the water distribution part of the present invention.

FIG. 6 is a schematic structural diagram of the water outlet pipe in the water outlet part of the present invention.

Figure 7 is a schematic diagram of the structure of the oil collecting tank of the present invention.

FIG. 8 is a schematic structural diagram of the heating coil at the bottom of the oil collecting tank of the present invention.

FIG. 9 is a schematic structural diagram of the sampling device of the present invention.

Fig. 10 is a schematic diagram of the inclined plate structure in the coagulation and settling device of the present invention.

Figure 11 is a schematic diagram of the support structure in the coagulation and settling device of the present invention.

12 is a schematic structural diagram of the sidewall scraping device of the present invention.

Figure 13 is a schematic diagram of the sludge sewage collection structure of the present invention.

Figure 14 is a schematic diagram of the structure of the scrub head in the sludge sewage collection structure of the present invention.

Figure 15 is a spiral trajectory diagram of the scrub head of the present invention.

16 is a schematic structural diagram of the automatic frequency conversion stirring device of the present invention.

FIG. 17 is a schematic view of the roller structure of the remote control displacement device of the present invention.

FIG. 18 is a schematic structural diagram of the hoisting device that can automatically go up and down according to the present invention.

Figure 19 is a schematic view of the structure of the air flotation device of the present invention.

Figure 20 is a schematic diagram of the installation and fixing structure of the air flotation device of the present invention.

Figure 21 is a schematic diagram of the pulley track structure in the support frame structure of the present invention.

Figure 22 is a schematic structural diagram of a lifting device used for lifting equipment according to the present invention.

FIG. 23 is a schematic structural diagram of the boosting buffer device in the present invention.

Figure 24 is a schematic structural diagram of the filter backwashing device in the present invention.

Figure 25 is a schematic diagram of the structure of the screen in the water distribution system of the filter backwash device of the present invention.

Figure 26 is a schematic diagram of the filter head switching structure in the filter backwashing device according to the present invention.

27 is a schematic structural diagram of a layered and frequency-distributed stirring and pressure washing device in the filter backwashing device according to the present invention.

Figure 28 is a schematic diagram of the structure of the filter screen in the filter backwashing device according to the present invention.

FIG. 29 is a schematic diagram of the structure of backwashing influent water distribution in the filter backwashing device according to the present invention.

Figure 30 is a schematic diagram of the support structure at the bottom of the filter backwashing device according to the present invention.

Figure 31 is a schematic diagram of the hinged structure of the support device in the filter backwashing device according to the present invention.

Figure 32 is a schematic diagram of the I-beam structure in the support frame structure of the present invention.

Figure 33 is a schematic diagram of the structure of the dispensing device in the present invention.

FIG. 34 is a schematic structural diagram of the dirty oil recovery device in the present invention.

FIG. 35 is a schematic structural diagram of the space spiral heating coil in the sewage oil recovery device according to the present invention.

Figure 36 is a schematic structural diagram of the sludge sewage treatment device according to the present invention.

Figure 37 is a schematic diagram of the structure of the console of the present invention.

In the figure: 1. Natural settling device, 2. Coagulation settling device, 3. Water inlet pipe, 4. Central water collecting pipe, 5. Water distribution pipe, 6. Water outlet pipe, 7. Oil collecting tank, 8. Heating coil, 9. Sampling device, 10. Inclined plate structure, 11 Supporting structure, 12 Side wall scraping device, 13 Washing head box, 14 Washing head, 15 Spiral track, 16 Automatic frequency conversion stirring device, 17 Roller, 18 Lifting device, 19 Air flotation device, 20 Installation and fixing structure of air flotation device, 21 pulley, 22 lift device, 23 boost buffer device, 24 filter backwash device, 25 filter head screen structure, 26 filter head conversion structure, 27 layered frequency division stirring pressure washing device, 28 filter screen, 29 water collection Mechanism, 30 lining layer, 33 dispensing device, 34 sewage oil recovery device, 35 spiral heating pipeline, 36 sludge sewage treatment device, 37 console, 38 traveling wheel, 39 position sensor, 40 track hole.

Detailed ways

Below in conjunction with accompanying drawing, the present invention is further described:

With reference to Figures 1 to 37, the simulated experimental device for the treatment of produced water in the oil field includes a raw water preparation device, a natural sedimentation device 1, a coagulation sedimentation device 2, a pressure boosting buffer device 23, a filtration backwash device 24, a dispensing device 33, Slop oil recovery device 34 , sludge sewage treatment device 36 , automatic cleaning device, remote displacement device, alarm device, console 37 . The invention adjusts the flow rate, pressure and settling time of the influent water by simulating the oily sewage treatment system produced in the oil field, so as to achieve the water quality standard of the reinjection water or the external drainage. The two-stage settling device (natural settling device 1, coagulation settling device 2) performs settling, including physical settling and separation simulating actual sewage treatment, collection of sewage oil, and coagulation settling after chemical treatment, which is used to measure and display the direction of water flow The flow direction measuring device is a sensor for measuring the flow rate and pressure of water flow. The primary settling tank is also called the physical settling link, which is used to simulate the natural settling during the actual treatment of oily sewage. Water tank, water outlet pipe 6, oil collecting device and sludge discharge structure, air flotation system, automatic cleaning tank wall and tank bottom system, also including mobile and fixed structures. The coagulation settling device 2 (secondary settling device) is similar to the natural settling device 1, and also includes a water inlet pipe 3, a water distribution system, a water collection system, a central water collection pipe 4, a central water collection cylinder, a water outlet pipe 6, an oil collection device and sewage. The mud treatment structure and the inclined plate structure 10 increase the effect of sewage sedimentation. In addition, in order to make the amount of medicine added to the device more accurately, there are electric control valves and display screens in the corresponding pipelines. The flowmeter can control the amount of medicine by checking the change of the flowmeter and changing the size of the corresponding electric valve. The pressure boosting buffer device 23 is mainly to make the pressure of the water flow from the previous link relatively unstable, so after the treatment of the buffer device, the water flow is in a relatively stable state, and then it flows into the lower pressure after further boosting process. a segment. The filtration step is to further separate the oily sewage, which mainly includes the structural design of the water distribution system, the filter material layer, the drainage system and the backwash.

The raw water preparation device mainly provides water source for the whole simulation experiment system device. In order to simulate the physical composition of the actual oil field produced water, the water distribution device can meet the medium required by the experiment. The energy power system provides the pressure required by the water flow for the whole device, so that the raw water can be transported in the whole system at a certain speed.

The settlement system is mainly composed of two parts, namely natural settlement and coagulation settlement. The first settling device is also called natural settling. The oily sewage is separated after a certain period of time due to the different density of each substance (mainly oil and water) due to the action of gravity. The electric control valve set in the water inlet part of the primary sedimentation device controls the flow rate and flow of the influent water according to the needs and the analysis of the experimental effect. The electric control valve is installed at the water inlet of the water inlet part and is installed around it. Flow meter and pressure gauge with display. The water distribution part has a total of eight water outlets, and each water distribution port is equipped with an electric control valve. Based on the actual situation, the state of each valve port can be changed by controlling the signal change of the electric control valve. There are eight water distribution ports. The water distribution port has two working modes: open and closed, so there are sixteen states in total. Each water distribution port is designed with a filter head that can be automatically replaced, according to the scale of the filter screen on each filter head. Replace the spare filter head by yourself. The filter head covered with dirt is transferred to the cleaning area through the automatic loading and unloading device, and then sent back to the original position. 37 The interface controls the flow of the water distribution part in time. When the flow is too large, it can control the valves of several water distribution ports to close it. On the contrary, when the flow pressure is small, several more valves can be opened; The frequency conversion stirring device 16 can be automatically adjusted, and its stirring frequency, strength and direction can be automatically adjusted according to the different water conditions, and it can also be moved in the vertical direction, so that the stirring paddle can be easily removed for cleaning. There is an opening at the bottom of the sedimentation tank to collect sludge, a hose is connected to the opening, the other end is connected to a negative pressure suction system similar to the function of a vacuum cleaner, this system can suck out sludge and other dirt, Then further cleaning of the bottom will pass through the sidewall scrubbing device 12 above the entire device, and through the automatic lift assembly, the sidewall scrubbing device reaches the bottom and then starts to scrub, and the scrubbed dirt can also be processed by the negative pressure suction system. ; A throttle and speed regulating electric control valve is installed on the water outlet line, and the valve is adjusted according to the downstream processing conditions. If the following links are too late, the downstream will send an alarm signal here, and then the control system will receive the alarm signal. It will respond in time and temporarily close the switch of the output valve. After the downstream processing is completed, the control system will open the valve here, and then continue to work normally. An exhaust flotation device 19 is arranged below the natural sedimentation tank. The air flotation device 19 is installed by the air flotation device installation and fixing structure 20. Figure 20 shows the installation and fixing structure of the air flotation device. The floating device 19 can adjust the amount, size and frequency of the generated bubbles, so as to adapt to the sedimentation treatment effect of the sewage, so that the liquid and the solid can be fully separated. The support frame structure is used to place the air flotation device 19, and the flotation equipment is checked for cleaning. There are pulley devices on both sides of the support frame structure. The pulleys 21 are in contact with the rails. When the device 19 needs to be cleaned or maintained regularly, the supporting frame structure will rely on the rails and then drag the air flotation device 19 to move to the outside of the natural settling tank (the air flotation device opening is set on the wall of the natural settling tank), and then carry out corresponding treatment. The oil collecting device adopts the oil collecting tank 7. The oil collecting tank 7 is made of channel steel. There is an oil outlet weir near the oil layer. The oil outlet weir is triangular in shape. There is a circle of thin plates on the inner wall of the triangular weir. On the slideway, it can be adjusted by itself according to the thickness of the oil layer. A heating system that can be heated to different temperatures according to the change of the external temperature is designed under the oil collecting tank 7. The physical structure of the heating system is a space spiral tube heating plate. Pipe 8, sometimes the oil layer flows slowly. In order to facilitate the oil layer to be discharged to the oil collection system in time, the principle of increasing the temperature to reduce the viscosity of the oil layer is used, so that the oil layer can flow into the oil collection system more smoothly. The bottom surface of the oil collecting tank 7 near the port is designed with a slope, which is more conducive to the inflow and outflow of oil and reduces the occurrence of oil accumulation. The side wall scraping device 12 uses the same central rotating shaft, which is the same rotating shaft as the rotating shaft of the automatic frequency conversion stirring device 16. The rotating shaft is connected to the side wall scraping device through a separation mechanism and a transmission mechanism, and the separation mechanism can be used. The rotating shaft is connected or separated from the transmission mechanism, and the transmission mechanism is connected with the side wall scraping device. Using the separation mechanism, when cleaning is required, the gear and the side wall scraping device are connected, and the scrubbing intensity can be adjusted by the frequency conversion pump. Through the signal control of the console 37, the speed of the pump can be adjusted, so that the washing process is more flexible. Sampling device 9, in order to know the experimental effect, some data need to collect the mixed liquid inside the device. The natural sedimentation tank is provided with 4 sampling ports according to the different heights, and each sampling port is provided with a sampling device 9. The oil and water are in contact with each other. A sampling port is opened at the position of the subsidence, a sampling port is opened at a deeper depth, then a sampling port is set in the middle part of the settlement, and finally a sampling port is opened between the solid and liquid phases, so that according to different Sampling is carried out at different parts of the sample, and then relevant experiments are carried out. A stop valve is installed at the outlet of each sampling port. One end of the valve is connected to the sampling port, and the other end is connected to a hose, which is connected to the final container for sampling liquid. , when sampling is required, open the corresponding valve.

A sloping plate structure 10 is designed in the coagulation settling device 2. The sloping plate structure 10 is composed of a plurality of plastic corrugated plates. The function of the corrugation is to increase the contact area with sewage on the one hand, and it is more conducive to the For sludge deposition, the design of the inclined plate adopts the principle of shallow pool, so that the raw water can be divided into multiple layers, which increases the contact area between the sewage and the inclined plate, which is more conducive to the sedimentation of oily sewage. The final shape of the inclined plate structure is a plurality of annular Structure, the radius of the opening facing up is large, and the radius of the opening facing down is small. In simple terms, it is composed of multiple trumpet-shaped plastic plates. There is a fixed connection structure between the corrugated plate and the corrugated plate, so that the inclined plate The structure 10 is not easily deformed. A support structure 11 is placed under the inclined plate to support the entire inclined plate structure 10. The upper part of the inclined plate is provided with a lifting ring. The top of the tank pulls it out of the tank for cleaning and replacement.

The medicine inlet is connected with the water inlet to mix the medicine from the medicine store 33 with oily sewage. A flow meter is installed in this part to observe the amount of medicine, and the pressure gauge is used to check whether the injected pressure can meet the The pressure of the drug entering the water inlet, the electronically controlled throttle valve is combined with the signals of the flowmeter and pressure gauge, and the parameters of these measuring devices are used to control the valve opening and closing and the valve opening. There are three kinds of drugs in the drug store 33. According to different According to the different conditions of the simulated raw water, different ratios are adopted, and finally the required ratio is modulated. The coagulation and settling device 2 also needs an air flotation device 19. Due to the introduction of drugs into the mixed liquid, the components in the mixed liquid are more complex and the viscosity will increase, so the use of the air flotation device will be beneficial to the coagulation process. sedimentation separation. The automatic frequency conversion stirring device 16 is also added to the coagulation settling device 2, so that the medicine can be mixed with the oily sewage quickly and evenly. There are eight blades of the stirring paddle. Three shapes are expected to be designed. The difference between the three types lies in the rotation angle and the size of the blade area. Due to these differences, the scenes they act on are different. The appropriate conditions are selected according to the stirring speed and strength. stirring paddle. The stirring paddle 16 is installed on the central rotating shaft, and the central rotating shaft is in the center of the coagulation settling tank, and the upper end is connected with the motor with the control system through the coupling. A steel frame structure that acts as a support, and the motor and the steel frame structure knob are connected together by four nuts.

The pressure boosting buffer device 23 includes a pressure gauge, a flow meter, an alarm device, and a filter screen (the bottom can be removed for cleaning and replacement at regular intervals). A pressure and flow sensor is installed at a position of half a meter. According to the data returned by the sensor, the residence time of the mixed liquid in the buffer device is determined. A filter screen 28 is set at the bottom of the device, and there is an opening at the bottom. Mud and impurities, the right end is the water outlet, the water outlet is connected with the water outlet pipeline, the pressure booster is installed between the water outlet pipeline and the outlet, and then the flow and pressure sensors are installed like the water inlet. There is a rectangular sealing opening on the wall of the buffer device close to the right side of the filter screen 28, and the cleaning and replacement of the filter screen 28 can be removed from the outside of the device through the cleaning and sealing opening. The alarm device is associated with the sensor and will generate an alarm if the pressure and flow are too high.

The filter-mounted backwash device 24 mainly includes a water inlet water distribution structure 29, a filter head screen structure 25, a filter material layer, a backing layer 30, a water collecting mechanism 29, a layered frequency division stirring and pressure washing device 27, and a sludge and dirt collection area. Structure, backwash circuit structure, pressure alarm, filter material layer replacement and cleaning structure. The water passing through the pressure boosting buffer device 23 enters the filter tank through the water inlet and water distribution pipeline of the filter head screen structure 25, and is sprinkled on the upper layer of the filter material with a certain pressure. The water distribution pipe 5 can rotate slowly and uniformly around the central axis, so that The water distribution can be made more uniform, see FIG. 26 for the filter head conversion structure 26, and FIG. 28 for the filter screen 28. The filter material layer is divided into three parts, and the particle size is getting larger and larger from top to bottom. The first is fine sand with fine particle size, followed by coarse sand with finer particle size or other filter materials, and then down is the particle size. Larger gravel, under the gravel is the supporting structure (backing layer 30) at the bottom, supporting the filter material above, and the water collecting mechanism 29 is also the water distribution structure during backwashing, which consists of several pipes with openings , During normal operation, the filtered water will be discharged from the filter tank through this water collecting mechanism. During backwashing, the backwashed water will pass through this water collecting pipe and be ejected upward through the small hole with a certain pressure to complete the backwash. The layered and frequency-distributed stirring and pressurized washing device 27 has a corresponding stirring paddle in each layer of the filter material layer. According to the filter material conditions of each layer, the size, number and inclination angle of the paddles of each layer of stirring paddles are different. It is also different. The first layer consists of 8, the second layer is 6, and the third layer is 4. Due to long-term filtration, each layer of filter material adheres to a lot of dirt, which reduces the adsorption effect of the filter material on impurities in the mixture. , in order to make the surface of the filter material cleaner and improve the filtration effect, the layered and frequency-distributed stirring and pressure washing device 27 enables each layer of filter material to be fully turned over and cleaned, and most of the filter material can participate in the filtration process. To reduce waste, a pipe diameter device with small holes is also added to the stratified frequency division stirring and pressure washing device 27. When the stirring paddle rotates, clean water passes through the small holes with a certain pressure and is then sprayed into the filter material. to allow the filter material to be further cleaned. The sludge and dirt collection structure is at the bottom of the filter tank, and the bottom is an ellipsoid shape. A scrubbing head 14 is designed on this surface, which can clean the dirt deposited on the surface, and set a time period, after this time period After that, the scrub head 14 cleans the face according to the set spiral track 15. After reaching the bottom, the dirt on the scrub head 14 falls into the previously designed pit at the bottom based on the action of gravity. The bottom of the pit is provided with On the basis of the hole, a valve mechanism that automatically opens and closes according to the pressure is installed. After the weight of the sediment reaches the set pressure value, the valve opens by itself. The alarm device is set according to the pressure inside the filter device, and a pressure sensor is installed inside the device. When the internal pressure is too large, the pressure sensor will transmit the data at this time to the alarm system, and the alarm system will alarm by red. Reminder, at this time, the relevant personnel are required to operate.

13, 14 and 15, the sludge and dirt collection structure includes a scrub head 14 and a spiral track 15. The scrub head is retractable and self-rotating, and the cross section of the spiral track is rectangular. The scrub head includes a brush and a scrub head box 13. , a small motor and a controller with controllable forward and reverse rotation are arranged inside the scrub head box, two walking wheels 38 are arranged on the side of the scrub head box, a track hole 40 is arranged in the scrub head box, the spiral track passes through the track hole, and the scrub head box can be Slide along the spiral track, and position sensors are set at the beginning and end of the spiral track. During the working process, the scrubbing head 14 drives the walking wheel through a small motor. The surface of the wheel has relatively deep grooves to increase the friction with the filter tank wall. The spiral track performs a spiral motion in space, so as to perform positive scrubbing. The spiral track 15 is made of rectangular strips, and the corresponding track hole 40 of the scrub head is also rectangular. The purpose of this is to reduce the spatial freedom of the scrub head, so that the The scrub head can only move along the spiral track doorway and cannot rotate, thus ensuring vertical contact with the tank wall; there will be a gap when the walking wheel contacts the tank wall, and the brush may not be able to contact the tank wall due to the large gap distance. , In order to solve this problem, the brush head is made into a retractable structure. During the movement process, the brush head can be adjusted freely according to the size of the gap, thus solving the problem that the brush head cannot contact the tank wall. Since the position sensor 39 is installed on the spiral track, when the scrub head moves to the bottom position sensor, the sensor feeds back the signal to the control system. After the control system receives the signal, it sends an instruction through the wireless transmitter to make the scrub head internally equipped with The motor of the wireless receiver reverses, which returns the scrub head to its original position, cleaning the bottom of the tank one more time on the way back.

The medicine dispensing device 33 is a medicine storehouse. According to the medicines required in the experiment, the medicine storehouse is set with four free areas for placing medicines. Each free area is in the shape of a rectangular parallelepiped. There is a valve mechanism that can automatically adjust the size, the other end is connected with the pipeline with the pump, and the end with the valve is connected with the control circuit. When the corresponding drug needs to be added to the system, the console 37 takes corresponding valve Signal control to control the addition of chemicals, a liquid level sensor is placed on the upper and lower positions of each partition to monitor the liquid level. When the liquid level is higher than the highest level or lower than the lowest level, the liquid level sensor will Send the signal to the alarm system and notify the console to take emergency measures. When the liquid level is too high, the valve should be closed to stop the replenishment of the drug store. When the liquid level is too low, the rotation speed of the pump will be increased, and the Add the medicine you need to the medicine store.

The sludge and sewage recovery device 36 adopts a large rectangular iron box, the upper part has no cover, and the bottom is designed in the shape of a funnel. , the conical bottom and the pipeline are connected to the valve with pressure sensor through the flange, the sludge in the system is sucked out by negative pressure, and then discharged from the top to the sludge collection device, and the sewage is pumped to each position of the system through the pump. The treated sewage is also pumped back to the sewage collection part from above. When the bottom pressure in the collection mechanism reaches the set value, the pressure sensor will give a signal to the bottom valve, changing the previously closed state to open, and wait until After the sludge and sewage are discharged for a certain period of time, the pressure is reduced, and the sensor will recognize that the current pressure no longer meets the set conditions, and the valve will automatically close until the next pressure meets the conditions again.

The dirty oil is recovered by the dirty oil recovery device 34, and the dirty oil enters the dirty oil recovery tank through the inlet through the filter screen. In the process of lower settlement, part of the impurities can be screened out, and the impurity content of the oil at the oil outlet can be reduced as much as possible, and a filter screen is also included at the oil outlet. A pressure sensor is installed near each filter screen, and there is also an alarm device correspondingly. When too much impurities on a certain part of the filter screen cause the pressure here to rise, the alarm device will remind you, then it needs to be replaced. The filter screen corresponding to cleaning; there is also a space spiral heating pipeline 35 from top to bottom inside the oil collecting device. The top is the hot water inlet and the bottom is the hot water outlet. Due to changes in the environment, sometimes The oil in the tank flows slowly and cannot meet the processing requirements of the equipment. At this time, by increasing the temperature of the oil, the viscosity of the dirty oil can be reduced and the fluidity of the oil can be improved. The long-term use of the dirty oil recovery device 34 will accumulate a large amount of oil pollution, and the heating pipeline and the filter screen in the device can be lifted to the outside through the lifting ring for cleaning and replacement.

The working process of this device is given below:

Step 1: Check if the device is working properly.

Step 2: Turn on the pump and pump the raw water into the sedimentation link.

Step 3: Check whether the speed pressure is abnormal through the console.

Step 4: Between waiting periods, if no alarm is generated, sample each link to see if the criteria are met. If there is an alarm or abnormality, it is necessary to solve the problem at the alarm place first, and then proceed to the next step after the alarm is cleared.

Step 5: If the standard is not met, analyze the possible cause of the problem according to the data information received by the console. Change and control the parameters of the corresponding position according to the possible causes of the analysis, such as the flow rate needs to be increased, the pressure needs to be reduced, etc. After these operations, wait for a period of time to collect a part of the sample to analyze whether it meets the standard, if not, Continue to analyze and debug until the conditions are met.

Step 6: After meeting the standard, it is necessary to keep and record the parameters of each link to facilitate future work and facilitate comparison and inspection.

The innovation of the present invention lies in:

Remote control displacement devices, each larger device has a roller system at the bottom, and each roller system has four rollers 17, each of which is a pair. One is used to control the direction, the entire roller system transmits signals through infrared rays, and each device is equipped with a remote control, which can facilitate the placement and shipping of the device, reducing labor costs.

Frequency conversion stirring and lifting system, this system works in conjunction with the sedimentation system. In traditional sewage treatment plants, natural settlement generally only relies on a long-term sedimentation process. To change the stirring frequency of the stirring device, so that the oily sewage can be more fully mixed before settling, which is beneficial to the subsequent settling process. In addition, the stirring device is designed to automatically rise and fall to facilitate future cleaning and replacement.

The inclined plate mechanism, according to the principle of shallow pool, divides the water in the tank into finer layers, which increases the contact area between the sewage and the plate, which is more conducive to settlement, and realizes that the effect of sewage settlement is more effective in the same time. , The inclined plate structure is composed of a plurality of conical plastic corrugated plates. There are ear holes on both sides of the upper part to be used for cleaning and replacement. The lower part has a supporting structure 11. The supporting structure 11 is hollow and convenient The water above flows out, and the appropriate number of inclined plates is selected according to the diameter of the settling device, so as to improve the effect and reduce the cost as much as possible.

The two-stage sedimentation device is the core of the design, and the corresponding operations are carried out in real time according to the sedimentation situation. The stirring system is to make the oily sewage that has just entered more evenly mixed, so that oil droplets and oil droplets, impurities and impurities can form more evenly. Large oil droplets and impurities are convenient for subsequent sedimentation. Different from traditional sedimentation, a cleaning and washing structure is added. A large amount of dirt will inevitably accumulate in various parts of the device during long-term operation. The automatic cleaning device can clean the stirring system and sedimentation sidewall. And the bottom is regularly scraped, which can improve the working effect.

The flow rate and pressure of water inlet and water distribution, water collection and outlet water, etc., each water inlet and outlet is equipped with an automatically controlled electronically controlled valve. Due to the limited accuracy of manual operation, and there is usually a delay, the use of electronically controlled valves can effectively To solve the above problems, the console controls the state of the electric valve at the corresponding position and the valve opening according to the signal returned by the flow pressure sensor at the corresponding water inlet and outlet, thereby improving the automation level of the entire system.

The dispensing device 33 adopts an automatic system controlled by an on-line limit signal, and the console knows the addition of medicines at each link. For example, if there are few medicines added, a certain part of the medicine may have a low pressure and need to be pressurized, while some parts are filled with medicine. If it is too much, the pressure here should be too high and the pressure needs to be reduced; in addition, the drug store itself also needs to be supplemented with corresponding drugs regularly. The flow pressure is controlled according to the sensor signal at each dosing position, and the drug store itself uses pressure sensors with upper and lower limits to sense whether the drug in the drug store has been filled or not enough.

The water distribution system in the filter backwash device 24 is different from the traditional fixed structure. The water distribution system in the present invention relies on its own force couple, and the water distribution system can rotate slowly and uniformly around the central axis, thereby solving the problem of uneven dead corners in the water distribution. The invention adopts a layered variable frequency stirring device, the filter material is divided into three layers, and there is a plate-like structure that can be divided between each layer. Some filter materials may not participate in the filtration process. In order to allow more filter materials to participate in the filtration process, the stirring device plays a very good role. Since the structural components of each layer of filter materials are different, so Take layered stirring and find the best speed match according to different speed ratios.

The present invention simulates the actual natural settlement effect through the primary settling device, and realizes the effect of secondary coagulation settling through the drug addition link, and the parameters of the injection amount can be adjusted to control the amount of the medicament added in real time, thereby realizing more precise control. . In terms of transportation, the present invention is provided with an electric roller, which can be pushed manually even when the power is not turned on. The remote controller is equipped with the electric roller, and the position of the device can be easily changed through the electric control, which makes the installation of the whole system more convenient. . In order to facilitate maintenance and cleaning, there is a place reserved for each device that can be hung by a crane. The lifting device 18 is shown in Figure 18. At the same time, some parts are exposed by the automatic lifting device to expose the parts that are prone to fouling, and then carry out cleaning. The simulation of the actual filter backflush is carried out through the filter backwash device 24, and there are many types of sensors installed in each simulation device, mainly including flow sensors, pressure sensors, temperature sensors, pH sensors, suspended solids concentration sensors, Suspended matter particle size sensor, sensor for measuring oil content, etc., to know the effect of sewage treatment, and then we can use these parameters to debug related links until it reaches the standard of re-injection or external drainage. The control of the entire device system is based on the real-time data measured by each sensor, and the valve opening at the corresponding position, the injection force of the drug and the amount of the drug are controlled according to the returned data, and the entire device is controlled through the console. The data of each position is sent back to the upper computer through the data acquisition system. In order to further facilitate the monitoring of sewage treatment, the present invention also adopts wireless transmission technology. Since the entire simulation system is in a relatively small space, the realization of wireless transmission technology is feasible, and the transmission speed is also very fast. signal, the corresponding agency will respond quickly, thus avoiding the problem of delay. In terms of control technology, the entire device system can be controlled through the host of the console. In addition, in order to realize further automation and be able to monitor the operation of the entire system remotely, the present invention also designs a mobile phone APP that is closely connected with the processing system, and the user can easily understand the operation of the entire system through the mobile phone client When there is an abnormal situation in the whole system device, the system will upload the abnormal situation to the mobile phone client, and timely remind the customer that there is an emergency situation that needs to be dealt with.

Claims (10)

1. The utility model provides an oil field produced water handles simulation experiment device which characterized in that: the oilfield produced water treatment simulation experiment device comprises a raw water preparation device, a natural sedimentation device (1), a coagulation sedimentation device (2), a boosting buffer device (23), a filtering backwashing device (24), a dispensing device (33), a sump oil recovery device (34), a sludge and sewage treatment device (36), an automatic cleaning device, a remote control displacement device, an alarm device and a control console (37), wherein the natural sedimentation device (1) comprises a natural sedimentation tank, a water inlet and distribution structure, a water collecting structure, an oil collecting structure, a water drainage structure and a sludge treatment structure are arranged in the natural sedimentation tank, the water inlet and distribution structure comprises a water inlet part and a water distribution part, an electric control valve is arranged at a water inlet of the water inlet part, the flow rate and the flow rate of inlet water are controlled, and a flowmeter and a pressure gauge are arranged around the electric control valve; the water distribution part is provided with a plurality of water distribution ports, each water distribution port is provided with an electric control valve, each water distribution port is provided with a filter head, the filter head is connected with an automatic assembling and disassembling device, the automatic assembling and disassembling device is used for transferring the filter head which is fully covered with dirt to a cleaning area for cleaning, then the filter head is returned to the water distribution port for re-installation, and the flow of the water distribution part is controlled in real time on a console system interface according to data transmitted by a flow velocity sensor and a pressure sensor; the water distribution part is provided with an automatic frequency conversion stirring device, and the stirring frequency of the stirring device is changed according to the change of the water inlet speed and the signal of the pressure sensor, so that the oily sewage is fully mixed before sedimentation; a sludge collecting port is formed at the bottom of the settling tank and is connected with a negative pressure suction system; a side wall washing and scraping device (12) is arranged above the natural settling tank, the side wall washing and scraping device (12) is connected with the automatic lifting assembly, and the side wall washing and scraping device (12) is conveyed to the bottom of the natural settling tank by the automatic lifting assembly to be washed; a throttling speed-regulating electric control valve is arranged on the water outlet pipeline; an air floatation device is arranged below the natural settling tank and arranged on a supporting frame structure, pulleys (21) are arranged on two side edges of the supporting frame structure, the pulleys (21) are in contact with rails, and the rails are arranged on two sides close to the tank wall; the oil collecting structure is an oil collecting tank (7), a circle of oil outlet weir is arranged near an oil layer of the oil collecting tank (7), the oil outlet weir is triangular, a circle of thin plate is arranged on the inner wall of the oil outlet weir, the thin plate is arranged on a slideway, a circle of heating coil (8) is arranged at the bottom of the oil collecting tank, and the bottom surface of the oil collecting tank is provided with a slope; the natural settling tank is provided with 4 sampling ports from top to bottom, each sampling port is provided with a sampling device (9), the position where oil and water are contacted is provided with one sampling port, the lower deeper part is provided with one sampling port, the middle part of the natural settling tank is provided with one sampling port downwards, finally, a solid-liquid interphase position is provided with one sampling port, the outlet of each sampling port is provided with a stop valve, the other end of each stop valve is connected with a hose, and the hose is connected with a sampling container;

the coagulation sedimentation device (2) is provided with one more inclined plate structure (10) than the natural sedimentation device (1), the inclined plate structure (10) is formed by combining a plurality of plastic corrugated plates, each plastic corrugated plate is horn-shaped, the plurality of plastic corrugated plates are alternately combined layer by layer from inside to outside, a fixedly connected structure is arranged between every two adjacent plastic corrugated plates, the inclined plates are arranged on the supporting structure (11), and the upper parts of the inclined plates are provided with hanging rings;

the boosting buffer device (23) comprises a cylinder, an alarm device and a filter screen, wherein the filter screen is detachably arranged at the bottom of the boosting buffer device, a sewage discharge outlet is arranged below the filter screen, the boosting buffer device (23) enables mixed liquid with unstable pressure and unstable flow velocity flowing upstream to be stabilized within a range, a pressure sensor and a flow sensor are arranged at a position half meter away from the inlet of the cylinder, the right end of the cylinder is provided with an outlet, the outlet is connected with a water outlet pipeline, the boosting device is arranged at the position where the water outlet pipeline and the outlet are alternated, and the outlet is also provided with the flow sensor and; a rectangular sealing opening is formed in the side wall, close to the filter screen, of the barrel, and the filter screen (28) is cleaned and replaced and is moved out of the barrel through the cleaning sealing opening; determining the retention time of the mixed liquid in the buffer device according to the data transmitted by the pressure sensor and the flow sensor, and if the pressure and the flow are overlarge, generating an alarm by the alarm device;

the filtering and backwashing device comprises a filtering tank, a water inlet and distribution device, a filter head screen structure (25), a filter material layer, a backing layer (30), a water collecting mechanism (29), a layered frequency division stirring and pressurizing flushing device (27), a sludge dirt collecting structure (13), a backwashing loop structure and a pressure alarm, wherein the filter material layer is replaced and cleaned; the layered frequency division stirring and pressurizing flushing device (27) is characterized in that each layer of the filter material layer is correspondingly provided with a stirring paddle, the size, the number and the inclination angle of each layer of the stirring paddles are different, the stirring paddles are provided with pipe diameter devices with small holes, and clean clear water passes through the small holes at a certain pressure and then is sprayed into the filter material when the stirring paddles rotate, so that the filter material is further cleaned; the sludge and dirt collecting structure (13) is arranged at the bottom of the filter tank, the bottom of the filter tank is in an ellipsoidal shape, a pit is formed in the bottom of the filter tank, a valve mechanism which can be automatically opened and closed according to pressure is installed at the bottom of the pit, the washing head (14) is arranged close to the ellipsoidal surface, the washing head (14) is used for scraping the ellipsoidal surface according to a set spiral track, after the bottom is reached, dirt on the washing head falls into the pit based on the action of gravity, and after the weight of sediment reaches a set pressure value, the valve mechanism is automatically opened.

2. The oilfield produced water treatment simulation experiment device of claim 1, wherein: the control console (37) is connected with a mobile phone APP through a network.

3. The oilfield produced water treatment simulation experiment device of claim 2, wherein: the dispensing device is provided with a plurality of vacant areas for placing medicines through partition plates, each vacant area is in a cuboid shape, two ends of each vacant area are provided with holes, an automatic adjusting valve is installed at one end of each vacant area, the other end of each vacant area is connected with a pipeline with a pump, the automatic adjusting valves are connected with a control circuit, and a control console (37) controls the addition of a certain medicine through corresponding automatic adjusting valves; the upper and lower positions of each partition plate are provided with liquid level sensors for monitoring the liquid level, when the liquid level is higher than the highest position or lower than the lowest position, the liquid level sensors can send signals to an alarm system to inform a control console (37) to take emergency measures, when the liquid level is too high, an automatic regulating valve is closed to stop adding the medicine storehouse, and when the liquid level is displayed to be too low, the rotation speed of a pump machine can be increased, and required medicines can be added into the medicine storehouse in time.

4. The oilfield produced water treatment simulation experiment device of claim 3, wherein: the sludge sewage treatment device (36) adopts an open cuboid big iron box, the bottom of the sludge sewage treatment device is designed into a funnel shape, the middle of the sludge sewage treatment device is separated by a partition plate to form a sludge pond and a sewage pond, the conical bottom of the sludge sewage treatment device is connected with a pipeline, and the conical bottom of the sludge sewage treatment device is connected with a valve with a pressure sensor through a flange.

5. The oilfield produced water treatment simulation experiment device of claim 4, wherein: the dirty oil recovery device (34) is a dirty oil recovery tank, the tank body is divided into three layers, each layer is provided with a filter screen with different grid sizes, so that a part of impurities are screened off in the process of downward sedimentation of dirty oil, the oil outlet also comprises a filter screen, a pressure sensor and an alarm device are arranged near each filter screen, and when the pressure of a certain part of the filter screens is increased due to excessive impurities on the certain part of the filter screens, the alarm device reminds the replacement and cleaning of the filter screens at the part of the filter screens; the inner wall of the tank body is provided with a spiral heating pipeline from top to bottom, the top is provided with a hot water inlet, and the bottom is provided with a hot water outlet.

6. The oilfield produced water treatment simulation experiment device of claim 5, wherein: the lateral wall wash and scrape axis of rotation that device (12) utilized automatic frequency conversion agitating unit (16) to drive, the axis of rotation passes through separating mechanism, drive mechanism and connects the lateral wall and wash and scrape the device, utilize separating mechanism, when wasing, wash the axis of rotation and scrape device (16) through drive mechanism and lateral wall and connect, wash intensity and adjust through the inverter pump, signal control through control cabinet (37) is adjusted the speed size of inverter pump, the transfer axle sets up elevating gear.

7. The oilfield produced water treatment simulation experiment device of claim 6, wherein: the sludge dirt collecting structure comprises a washing head (14) and a spiral track (15), the washing head is telescopic and can rotate, the cross section of the spiral track is rectangular, the washing head (14) comprises a brush and a washing head box (13), a small motor and a washing controller which can control forward and reverse rotation are arranged in the washing head box, two walking wheels (38) are arranged on the side edge of the washing head box, track holes (40) are formed in the washing head box (13), the spiral track (15) penetrates through the track holes (40), the washing head box (13) is in sliding connection with the spiral track (15), and a starting end and a tail end of the spiral track are provided with position sensors (39).

8. The oilfield produced water treatment simulation experiment device of claim 7, wherein: the water distribution pipe of the water inlet and distribution device slowly rotates around the central shaft at a constant speed.

9. The oilfield produced water treatment simulation experiment device of claim 8, wherein: the filter material layer of the filtering and backwashing device (24) is divided into three parts, the grain diameter is larger and larger from top to bottom, the filter material on the uppermost layer is fine sand with fine grain diameter, the filter material on the middle layer is coarse sand with fine grain diameter, the filter material on the lowermost layer is gravel with larger grain diameter, the lining layer is arranged below the gravel, and the lining layer (30) supports the filter material layer.

10. The oilfield produced water treatment simulation experiment device of claim 9, wherein: the layering frequency division stirring pressurization washing unit (27) at the three-layer stirring rake, the superiors' stirring rake has 8 paddles, the middle second floor stirring rake has 6 paddles, the third layer stirring rake has 4 paddles.

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