Heavy oil high-temperature purification sewage multi-medium stage treatment device and detection method

Abstract

The invention relates to the technical field of skid-mounted devices and automatic interlocking, in particular to a heavy oil high-temperature purification sewage multi-medium stage treatment device and a detection method, the heavy oil high-temperature purification sewage multi-medium stage treatment device comprises a silicon content detection instrument, a hardness detection instrument, a mineralization degree detection instrument, an oxygen content detection instrument, a chloride ion detection instrument, an oil content detection instrument and the like; according to the detection method, after a to-be-analyzed sample solution is subjected to primary cooling, the cooled sample solution is directly subjected to oil content and suspended matter detection in two paths, after the other path is subjected to three-stage filtration and secondary cooling, the other path is subjected to mineralization degree, oxygen and chloride ion detection in three paths, and the other path is subjected to silicon content and hardness detection after filtration. According to the stage treatment device, a five-section sample liquid pretreatment technology of two-stage water cooling and three-stage filter element filtering is adopted, sample liquid is shunted according to the detection requirements of different detection instruments, the problem that all components in the sample liquid interfere with one another is solved, the instrument detection accuracy is improved, and online detection of heavy oil high-temperature purification sewage is achieved.

Description

Technical Field

[0001] The invention relates to the field of skid-mounted devices and automated interlocking technology, and is a multi-media graded treatment device and a detection method for high-temperature purification of heavy oil and sewage. Background Art

[0002] The core method of heavy oil development is to use boilers to heat water into high-temperature and high-pressure steam and inject it into the formation to reduce the viscosity of heavy oil. In order to reduce environmental pollution and improve water utilization, heavy oil development units separate the oil and water in the produced fluid, purify the separated wastewater and reuse it in the boiler. The quality of purified wastewater directly affects the stable operation of the boiler, and thus affects the development of heavy oil.

[0003] There are 21 nodes in the treatment process of the heavy oil purified wastewater in the Fengcheng Oilfield operation area that require manual testing of water quality. The test contents include oil content, suspension, silicon, hardness, mineralization, chloride ion, and oxygen content. The instrument testing requirements for the test contents are shown in Table 1. At present, the water quality of purified wastewater is monitored by manual sampling and testing, with a sampling cycle of 4 to 6 hours. The test results are greatly affected by human factors, and the harmful substances in the purified wastewater are easy to affect the health of the sampling personnel. At the same time, the temperature of the heavy oil purified wastewater is high and the composition is complex. It is a high-temperature multi-media wastewater that cannot be directly analyzed and tested using instruments. Summary of the invention

[0004] The present invention provides a multi-media graded treatment device and detection method for high-temperature purified wastewater of heavy oil, which overcomes the shortcomings of the above-mentioned prior art and can effectively solve the technical problem of the difficulty in adapting to the working conditions of the existing high-temperature multi-media wastewater online monitoring instruments, realize the online monitoring of the water quality of high-temperature multi-media wastewater, and can reflect the water quality fluctuations in real time and query the historical water quality data.

[0005] One of the technical solutions of the present invention is achieved through the following measures: a multi-media graded treatment device for high-temperature purification of heavy oil wastewater, including a primary cooler, a three-stage filtering device, a secondary cooler, a filter 2, a silicon content detection instrument, a hardness detection instrument, a mineralization detection instrument, an oxygen content detection instrument, a chloride ion detection instrument, an oil content detection instrument, a suspended matter detection instrument, a sample liquid pipeline and a primary cooling pipeline, there are two primary coolers, the two primary coolers are arranged in parallel, the sample liquid pipeline is fixedly connected to the liquid inlet ends of the two primary coolers, the liquid outlet ends of the two primary coolers are fixedly connected to the primary cooling pipeline, the primary cooling pipeline is fixedly connected to the oil content detection instrument and the suspended matter detection instrument through the sample inlet branch pipe, the three-stage filtering device Two groups of three-stage filtering devices are arranged in parallel, each group of three-stage filtering devices includes a primary filter, a secondary filter and a tertiary filter, the primary filter, the secondary filter and the tertiary filter are arranged in series in sequence, the primary cooling pipeline is fixedly connected with the liquid inlet end of the primary filter of each group of three-stage filtering devices through a liquid inlet branch pipe, the liquid outlet end of the three-stage filter of each group of three-stage filtering devices is fixedly connected with the liquid inlet end of the secondary cooler, the liquid outlet end of the secondary cooler is fixedly connected with the mineralization detection instrument, the oxygen content detection instrument and the chloride ion detection instrument through the sampling branch pipe, the liquid outlet end of the secondary cooler is fixedly connected with the liquid inlet end of the second filter, and the liquid outlet end of the second filter is fixedly connected with the silicon content detection instrument and the hardness detection instrument through the sampling branch pipe.

[0006] The following is a further optimization and / or improvement of one of the above-mentioned technical solutions: The above-mentioned first-stage cooler and second-stage cooler both adopt tube-in-tube coolers.

[0007] The above-mentioned first-stage filter adopts a filter with a 250-mesh stainless steel filter element, the second-stage filter adopts a filter with a 100-mesh stainless steel filter element, and the third-stage filter adopts a filter with a 60-mesh wound filter element.

[0008] The above filter 2 adopts a filter with a 250-mesh ceramic filter element.

[0009] The above-mentioned silicon content detection instrument uses colorimetric silicon content detection instrument, hardness detection instrument uses electrode method hardness detection instrument, mineralization detection instrument uses electrode method mineralization detection instrument, oxygen content detection instrument uses current method oxygen content detection instrument, chloride ion detection instrument uses electrode method chloride ion detection instrument, oil content detection instrument uses ultraviolet fluorescence method oil content detection instrument, and suspended matter detection instrument uses light transmission method suspended matter detection instrument.

[0010] The above-mentioned heavy oil high-temperature purified wastewater multi-media graded treatment device also includes a cooling water main pipe, which is fixedly connected to the water inlet end of each primary cooler and the water inlet end of the secondary cooler. The water outlet end of each primary cooler and the secondary cooler is fixedly connected with a return pipeline, and the return pipeline corresponding to the secondary cooler is fixedly connected to the liquid inlet end of the filter 2 with a cleaning pipeline.

[0011] The silicon content detection instrument has a solenoid valve fixedly installed at the sampling branch connected to the liquid inlet end, the silicon content detection instrument has a solenoid valve fixedly installed at the liquid outlet end, and the hardness detection instrument has a solenoid valve fixedly installed at the sampling branch connected to the liquid inlet end.

[0012] A pressure gauge and a temperature transmitter are fixedly installed on the sample liquid pipeline.

[0013] Fluid pressure and temperature data are collected through pressure gauges and temperature transmitters installed on sample liquid pipelines and other pipelines, and can be sent to the PLC controller.

[0014] The second technical solution of the present invention is achieved by the following measures: A detection method of a multi-media graded treatment device for high-temperature purification of heavy oil wastewater is carried out according to the following method: The sample liquid to be analyzed is divided into three paths after being cooled by the primary cooler. Two paths directly use the ultraviolet fluorescence method oil content detection instrument and the light transmittance method suspended matter detection instrument to detect the oil content and suspended matter respectively on the cooled sample liquid. The other path is divided into four paths after passing through the three-stage filtration of the three-stage filtration device and the secondary cooling of the secondary cooler in sequence. Three paths are respectively detected by the electrode method mineralization detection instrument, the current method oxygen content detection instrument, and the electrode method chloride ion detection instrument for mineralization, oxygen, and chloride ion detection. The other path is filtered through the second filter and then divided into two paths for silicon content and hardness detection by the colorimetric method silicon content detection instrument and the electrode method hardness detection instrument.

[0015] The grading treatment device described in the present invention uses a five-stage sample liquid pretreatment technology of two-stage water cooling and three-stage filter element filtration. According to the detection requirements of different detection instruments, the sample liquid is diverted to solve the problem of mutual interference among components in the sample liquid, improve the accuracy of instrument detection, and realize online detection of high-temperature purified wastewater of heavy oil. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Attached Figure 1 It is a schematic diagram of the process flow of the multi-media graded treatment device for high-temperature purification of wastewater by heavy oil according to the present invention.

[0017] The codes in the accompanying drawings are: 1 is a primary cooler, 2 is a secondary cooler, 3 is filter 2, 4 is a primary filter, 5 is a secondary filter, 6 is a tertiary filter, 7 is a silicon content detection instrument, 8 is a hardness detection instrument, 9 is a mineralization detection instrument, 10 is an oxygen content detection instrument, 11 is a chloride ion detection instrument, 12 is an oil content detection instrument, 13 is a suspended matter detection instrument, 14 is a sample liquid pipeline, 15 is a primary cooling pipeline, 16 is a liquid inlet branch, 17 is a sample inlet branch, 18 is a cooling water main, 19 is a return water pipeline, 20 is a cleaning pipeline, and 21 is a solenoid valve. DETAILED DESCRIPTION

[0018] The present invention is not limited by the following embodiments, and specific implementation methods can be determined based on the technical solution of the present invention and actual conditions.

[0019] In the present invention, for the convenience of description, the relative position relationship of each component is described according to the attached Figure 1 The layout is described in detail, such as the positional relationship of front, back, top, bottom, left, right, etc., which is based on the attached manual. Figure 1 It is determined by the layout direction.

[0020] In the present invention, unless otherwise specified, the equipment and instruments used are the existing publicly known equipment and instruments.

[0021] The present invention will be further described below in conjunction with embodiments: Embodiment 1: As attached Figure 1As shown, the multi-media graded treatment device for high-temperature purification of heavy oil wastewater comprises a primary cooler 1, a three-stage filtering device, a secondary cooler 2, a filter 3, a silicon content detection instrument 7, a hardness detection instrument 8, a mineralization detection instrument 9, an oxygen content detection instrument 10, a chloride ion detection instrument 11, an oil content detection instrument 12, a suspended matter detection instrument 13, a sample liquid pipeline 14 and a primary cooling pipeline 15. There are two primary coolers 1, and the two primary coolers 1 are arranged in parallel. The sample liquid pipeline 14 is fixedly connected to the liquid inlet ends of the two primary coolers 1, respectively, and the liquid outlet ends of the two primary coolers 1 are fixedly connected to the primary cooling pipeline 15, respectively. The primary cooling pipeline 15 is fixedly connected to the oil content detection instrument 12 and the suspended matter detection instrument 13 through the sample inlet branch pipe 17, respectively. There are two groups of three-stage filtering devices, and the two groups The three-stage filtering devices are arranged in parallel, and each group of the three-stage filtering devices includes a primary filter 4, a secondary filter 5 and a tertiary filter 6. The primary filter 4, the secondary filter 5 and the tertiary filter 6 are arranged in series in sequence. The primary cooling pipeline 15 is fixedly connected with the liquid inlet end of the primary filter 4 of each group of the three-stage filtering devices through a liquid inlet branch pipe 16. The liquid outlet end of the tertiary filter 6 of each group of the three-stage filtering devices is fixedly connected with the liquid inlet end of the secondary cooler 2. The liquid outlet end of the secondary cooler 2 is fixedly connected with the mineralization detection instrument 9, the oxygen content detection instrument 10, and the chloride ion detection instrument 11 through the sampling branch pipe 17 respectively. The liquid outlet end of the secondary cooler 2 is fixedly connected with the liquid inlet end of the filter 2 3. The liquid outlet end of the filter 2 3 is fixedly connected with the silicon content detection instrument 7 and the hardness detection instrument 8 through the sampling branch pipe 17 respectively.

[0022] Based on the characteristics of temperature, pressure and flow rate of high-temperature multi-media sewage and the certain requirements of the detection instrument for the temperature, pressure and flow rate of high-temperature multi-media sewage, the pressure and flow rate of the high-temperature multi-media sewage basically meet the requirements of the detection instrument, but the temperature is too high and needs to be cooled. Therefore, the sample liquid is cooled by the primary cooler 1, and the temperature change caused by cooling has little effect on the concentration of the 7 parameters. The oil content and suspended matter parameters of the sample liquid can be detected by the oil content detection instrument 12 and the suspended matter detection instrument 13 respectively after the primary cooling; the remaining five parameters need to be filtered to eliminate the interference of oil and suspension. Therefore, the sample liquid after the primary cooling continues to be filtered for three levels and cooled for two levels, and then tested by the mineralization detection instrument 9, the oxygen content detection instrument 10, and the chloride ion detection instrument 11; before the detection work of the silicon content detection instrument 7 and the hardness detection instrument 8, it is necessary to continue to filter the sample liquid after the secondary cooling to meet the detection requirements of the silicon content detection instrument 7 and the hardness detection instrument 8.

[0023] When selecting a shell-and-tube cooler, the raw water from the inlet pipeline of the on-site deaerator can be used as the cold source to cool the sample liquid in two stages.

[0024] The comparison between this application and similar prior art is shown in Table 2.

[0025] As shown in Table 2, regarding water treatment technology: The common points between the present application and the prior art are: 1) both use filtering devices; 2) some pre-treatment devices use multi-stage filtering treatment; The differences between the present application and the prior art are: 1) Different water samples are tested: the prior art is aimed at ordinary water quality (river water, tap water, salt water, etc.); the present application technology is aimed at heavy oil multi-media purification of sewage; 2) Different device designs: similar prior arts mostly filter suspended impurities in room temperature liquids; the present application technology is aimed at high-temperature multi-media liquids, and soluble and insoluble substances are mixed and graded.

[0026] About online water quality monitoring technology: The common points between the present application technology and the prior art are: 1) both use instruments for detection; 2) both have detection pre-processing and control logic functions; The differences between this application and the prior art are: 1) Different application scenarios: Similar prior art is applied to conventional water treatment units such as water plants, reservoirs, and domestic water; this application technology is targeted at the field of high-temperature multi-media sewage; 2) Similar prior art generally processes common indicators such as bacteria, pH, ammonia nitrogen, etc., process improvements, control sampling, valve switching, etc., remote data transmission, etc.; this application technology is targeted at high-temperature multi-media (7 items) sewage detection instruments, designs cooling and graded filtration systems, has different detection indicators, and can arbitrarily increase or decrease modules and detection items according to applicable circumstances.

[0027] Embodiment 2: As an optimization of the above embodiment, both the primary cooler 1 and the secondary cooler 2 are shell-and-tube coolers.

[0028] Embodiment 3: As an optimization of the above embodiment, the primary filter 4 adopts a filter with a 250-mesh stainless steel filter element, the secondary filter 5 adopts a filter with a 100-mesh stainless steel filter element, and the tertiary filter 6 adopts a filter with a 60-mesh wound filter element.

[0029] The selection test comparison of the three-stage filter device is shown in Table 4. As can be seen from Table 4, the selection of the primary filter 4, the secondary filter 5 and the tertiary filter 6 can allow the floating oil to be intercepted by the stainless steel and the wound filter element, extend the service life of the wound filter element, and improve the filtering effect.

[0030] Embodiment 4: As an optimization of the above embodiment, the filter 2 3 adopts a filter with a 250-mesh ceramic filter element.

[0031] Embodiment 5: As an optimization of the above embodiment, a pressure gauge and a temperature transmitter are fixedly installed on the sample liquid pipeline 14 .

[0032] Embodiment 6: As an optimization of the above embodiments, the silicon content detection meter 7 selects a colorimetric silicon content detection meter, the hardness detection meter 8 selects an electrode hardness detection meter, the mineralization detection meter 9 selects an electrode mineralization detection meter, the oxygen content detection meter 10 selects an electric current oxygen content detection meter, the chloride ion detection meter 11 selects an electrode chloride ion detection meter, the oil content detection meter 12 selects an ultraviolet fluorescence oil content detection meter, and the suspended matter detection meter 13 selects a light transmittance suspended matter detection meter.

[0033] The inventors of the present application studied the technical principles of 12 water quality detection methods such as comparative colorimetry and electrode method, and established water quality online detection indicators and water quality online detection technology suitable for high-temperature multi-media sewage, that is, selecting the colorimetric method silicon content detection instrument, electrode method hardness detection instrument, electrode method mineralization detection instrument, current method oxygen content detection instrument, electrode method chloride ion detection instrument, ultraviolet fluorescence method oil content detection instrument, and light transmission method suspended matter detection instrument combination.

[0034] A comparison table of indicators (7 test items including oil content, suspension, silicon, hardness, mineralization, chloride ion and oxygen content) of manual detection and instrument detection technology (heavy oil high temperature purification wastewater multi-media graded treatment device) described in this application is shown in Table 3.

[0035] It can be seen from Table 3 that the detection time using this device is shorter, more timely and has smaller errors.

[0036] The selection of the above-mentioned instrument model can significantly reduce the cost of the detection instrument. See Table 5 for a specific comparison.

[0037] The colorimetric silicon content detection instrument can be a silica analyzer with model number GSGG-5089Pro; the specific parameters of the silica analyzer are shown in Table 6.

[0038] The electrode method hardness testing instrument can adopt the model of BOQU PFG-3085 water quality online hardness tester; the specific parameters of the water quality online hardness tester are shown in Table 7.

[0039] The electrode method mineralization detection instrument can adopt the Xuetong CON5101-GY Xuetong induction electrode conductivity meter; the specific parameters of the induction electrode conductivity meter are shown in Table 8.

[0040] The current method oxygen content detection instrument can adopt the Xuetong OXY5402A online dissolved oxygen analyzer; the specific parameters of the online dissolved oxygen analyzer are shown in Table 9.

[0041] The electrode method chloride ion detection instrument can adopt the Xuetong 5903 online chloride ion concentration meter; the specific parameters of the online chloride ion concentration meter are shown in Table 10.

[0042] The UV fluorescence oil content detection instrument can use the water oil analyzer with the signal of Xuetong XT-5907; the specific parameters of the water oil analyzer are shown in Table 11.

[0043] The suspended solids detection instrument of the light transmission method can adopt the turbidimeter of Xuetong 5901A MLSS. The specific parameters of the turbidimeter are shown in Table 12.

[0044] Embodiment 7: As an optimization of the above embodiment, the multi-media graded treatment device for high-temperature purified wastewater of heavy oil further comprises a cooling water main pipe 18, which is fixedly connected to the water inlet end of each primary cooler 1 and the water inlet end of the secondary cooler 2, and the water outlet end of each primary cooler 1 and the secondary cooler 2 is fixedly connected to a return water pipeline 19, and a cleaning pipeline 20 is fixedly connected between the return water pipeline 19 corresponding to the secondary cooler 2 and the liquid inlet end of the filter 2 3.

[0045] Embodiment 8: As an optimization of the above embodiment, a solenoid valve 21 is fixedly installed at the sampling branch pipe 17 connected to the liquid inlet end of the silicon content detection instrument 7, a solenoid valve 21 is fixedly installed at the liquid outlet end of the silicon content detection instrument 7, and a solenoid valve 21 is fixedly installed at the sampling branch pipe 17 connected to the liquid inlet end of the hardness detection instrument 8.

[0046] Other pipelines of the device are installed with valves such as the solenoid valve according to actual needs.

[0047] The liquid outlet ends of the silicon content detection instrument 7, the hardness detection instrument 8, the mineralization detection instrument 9, the oxygen content detection instrument 10, the chloride ion detection instrument 11, the oil content detection instrument 12 and the suspended matter detection instrument 13 can be fixedly connected with a sewage pipeline.

[0048] Open the solenoid valve 21 at the cleaning pipeline 20, and clean the filter 2 3 and the sample inlet branch 17 connected to the liquid inlet end of the silicon content detection instrument 7 and the liquid inlet end of the hardness detection instrument 8 through the cleaning pipeline 20 to prevent the oil and suspended matter in the sample liquid from contaminating the pipeline and optical lens of the silicon content detection instrument 7.

[0049] At the same time, in view of the problem that the pipelines and optical lenses of the silicon content detection instrument 7 are easily contaminated by oil and suspended matter, a 250-mesh ceramic filter is installed at the inlet of the silicon content detection instrument 7 to reduce impurities in the water; an electromagnetic valve 21 is installed at the inlet and the outlet of the silicon content detection instrument 7 to achieve periodic sampling (every 2 hours). Through PLC timing control, the sample liquid and clean water are switched once every 2 hours, thereby extending the service life of the instrument.

[0050] By using programmable logic control technology (PLC controller or existing well-known industrial controller can be selected), interlocking control functions such as sample liquid / clean water cycle switching and silicon content detection instrument 7 outlet blocking are designed to solve problems such as high-temperature sample liquid damaging the instrument, pipeline blockage, sample liquid corroding the meter head, etc.

[0051] Example 9: The detection method of the multi-media graded treatment device for high-temperature purification of heavy oil wastewater described in the above embodiment is carried out according to the following method: The sample liquid to be analyzed is divided into three paths after being cooled by the primary cooler 1. Two paths directly use the ultraviolet fluorescence method oil content detection instrument and the light transmittance method suspended matter detection instrument to detect the oil content and suspended matter of the cooled sample liquid respectively. The other path is divided into four paths after being filtered by the three-stage filtration device and the secondary cooling of the secondary cooler 2 in sequence. Three paths are respectively detected by the electrode method mineralization detection instrument, the current method oxygen content detection instrument, and the electrode method chloride ion detection instrument for mineralization, oxygen, and chloride ion detection. The other path is filtered by the filter 2 3 and then divided into two paths for silicon content and hardness detection by the colorimetric method silicon content detection instrument and the electrode method hardness detection instrument.

[0052] Field trials: The project (heavy oil high temperature purified sewage multi-media graded treatment device) was field tested in the softener room of the No. 1 heavy oil joint treatment station in the Fengcheng Oilfield Operation Area for 6 months, and the high temperature multi-media sewage quality at the softener inlet node was detected. During this period, the system underwent 9 adaptive improvements and a total of 12 data anomalies were monitored. After on-site verification, it was determined that 5 times were water quality fluctuations, 4 were on-site maintenance, and 3 instrument failures. The water quality was normal at other times. After on-site investigation by the expert group of Xinjiang Oilfield Company, the technical route and construction ideas of this project were affirmed, and the experiment was deemed successful.

[0053] This device (heavy oil high-temperature purified wastewater multi-media graded treatment device) has been promoted and applied in the 20,000m³ / day softener room of the No. 2 heavy oil joint treatment station in Fengcheng Oilfield Operation Area to detect the water quality of high-temperature multi-media wastewater at the softener inlet node. It has been officially put into use for 2 years in the No. 1 and No. 2 heavy oil joint treatment stations in Fengcheng Oilfield Operation Area, providing effective guarantee for the 50,000 cubic meters / day heavy oil purified wastewater reuse boiler in Fengcheng Oilfield Operation Area.

[0054] After the device is put into use, it can ensure that the wastewater meets the standards for reuse and improve the utilization rate of water resources through online water quality monitoring, which has good social and ecological benefits. The water quality data is transformed from "spot sampling and discrete" to "continuous and real-time", which is convenient for researchers to analyze the water quality treatment effect at key nodes, guide the regulation of heavy oil water treatment process, optimize the dosing, improve the water quality control ability, and achieve "water quality fluctuation warning, upstream process adjustment, downstream water quality compliance", and reduce the risk of production and operation system.

[0055] The above technical features constitute the embodiments of the present invention, which have strong adaptability and implementation effect. Non-essential technical features can be added or reduced according to actual needs to meet the requirements of different situations.

Claims

1. A multi-media graded treatment device for high-temperature purification of heavy oil wastewater, characterized in that It includes a primary cooler, a three-stage filtering device, a secondary cooler, a filter 2, a silicon content detection instrument, a hardness detection instrument, a mineralization detection instrument, an oxygen content detection instrument, a chloride ion detection instrument, an oil content detection instrument, a suspended matter detection instrument, a sample liquid pipeline and a primary cooling pipeline. There are two primary coolers, which are arranged in parallel. The sample liquid pipeline is fixedly connected to the liquid inlet ends of the two primary coolers, respectively, and the liquid outlet ends of the two primary coolers are fixedly connected to the primary cooling pipeline. The primary cooling pipeline is fixedly connected to the oil content detection instrument and the suspended matter detection instrument through the sample inlet branch pipe. There are two groups of three-stage filtering devices, which are arranged in parallel. The first-stage filtering device comprises a first-stage filter, a second-stage filter and a third-stage filter, which are arranged in series in sequence. The first-stage cooling pipeline is fixedly connected with the liquid inlet end of the first-stage filter of each group of three-stage filtering devices through a liquid inlet branch pipe, the liquid outlet end of the third-stage filter of each group of three-stage filtering devices is fixedly connected with the liquid inlet end of the second-stage cooler, the liquid outlet end of the second-stage cooler is fixedly connected with the mineralization detection instrument, the oxygen content detection instrument and the chloride ion detection instrument through the sampling branch pipe, the liquid outlet end of the second-stage cooler is fixedly connected with the liquid inlet end of the second filter, and the liquid outlet end of the second filter is fixedly connected with the silicon content detection instrument and the hardness detection instrument through the sampling branch pipe.

2. The device for multi-media classification of heavy oil high temperature purified wastewater according to claim 1 is characterized in that Both the primary cooler and the secondary cooler adopt shell and tube coolers.

3. The device for multi-media classification of heavy oil high temperature purified wastewater according to claim 1 or 2, characterized in that The first-stage filter adopts a filter with a 250-mesh stainless steel filter element, the second-stage filter adopts a filter with a 100-mesh stainless steel filter element, and the third-stage filter adopts a filter with a 60-mesh wound filter element; or / and, filter two adopts a filter with a 250-mesh ceramic filter element.

4. The device for multi-media classification of heavy oil high temperature purified wastewater according to claim 1 or 2, characterized in that The silicon content detection instrument uses the colorimetric method silicon content detection instrument, the hardness detection instrument uses the electrode method hardness detection instrument, the mineralization detection instrument uses the electrode method mineralization detection instrument, the oxygen content detection instrument uses the current method oxygen content detection instrument, the chloride ion detection instrument uses the electrode method chloride ion detection instrument, the oil content detection instrument uses the ultraviolet fluorescence method oil content detection instrument, and the suspended matter detection instrument uses the light transmission method suspended matter detection instrument.

5. The device for multi-media classification of heavy oil high temperature purified wastewater according to claim 3 is characterized in that The silicon content detection instrument uses the colorimetric method silicon content detection instrument, the hardness detection instrument uses the electrode method hardness detection instrument, the mineralization detection instrument uses the electrode method mineralization detection instrument, the oxygen content detection instrument uses the current method oxygen content detection instrument, the chloride ion detection instrument uses the electrode method chloride ion detection instrument, the oil content detection instrument uses the ultraviolet fluorescence method oil content detection instrument, and the suspended matter detection instrument uses the light transmission method suspended matter detection instrument.

6. The device for multi-media classification of heavy oil high temperature purified wastewater according to claim 1, 2 or 5, characterized in that It also includes a cooling water main pipe, which is fixedly connected to the water inlet end of each primary cooler and the water inlet end of the secondary cooler. The water outlet end of each primary cooler and secondary cooler is fixedly connected with a return pipeline. The return pipeline corresponding to the secondary cooler is fixedly connected to the liquid inlet end of the filter 2 with a cleaning pipeline.

7. The device for multi-media classification of heavy oil high temperature purified wastewater according to claim 3 is characterized in that It also includes a cooling water main pipe, which is fixedly connected to the water inlet end of each primary cooler and the water inlet end of the secondary cooler. The water outlet end of each primary cooler and secondary cooler is fixedly connected with a return pipeline. The return pipeline corresponding to the secondary cooler is fixedly connected to the liquid inlet end of the filter 2 with a cleaning pipeline.

8. The device for multi-media classification of heavy oil high temperature purified wastewater according to claim 4 is characterized in that It also includes a cooling water main pipe, which is fixedly connected to the water inlet end of each primary cooler and the water inlet end of the secondary cooler. The water outlet end of each primary cooler and secondary cooler is fixedly connected with a return pipeline. The return pipeline corresponding to the secondary cooler is fixedly connected to the liquid inlet end of the filter 2 with a cleaning pipeline.

9. The device for multi-media graded treatment of heavy oil high temperature purified wastewater according to any one of claims 1 to 8, characterized in that An electromagnetic valve is fixedly installed at the sampling branch connected to the liquid inlet end of the silicon content detection instrument, an electromagnetic valve is fixedly installed at the liquid outlet end of the silicon content detection instrument, and an electromagnetic valve is fixedly installed at the sampling branch connected to the liquid inlet end of the hardness detection instrument; or / and, a pressure gauge and a temperature transmitter are fixedly installed on the sample liquid pipeline.

10. A detection method for a multi-media grading treatment device for high-temperature purification of heavy oil wastewater according to any one of claims 1 to 9, characterized in that Proceed as follows: The sample liquid to be analyzed is divided into three paths after being cooled by the primary cooler. Two paths directly use the ultraviolet fluorescence method oil content detection instrument and the light transmittance method suspended matter detection instrument to detect the oil content and suspended matter respectively on the cooled sample liquid. The other path is divided into four paths after passing through the three-stage filtration of the three-stage filtration device and the secondary cooling of the secondary cooler in sequence. Three paths are respectively detected by the electrode method mineralization detection instrument, the current method oxygen content detection instrument, and the electrode method chloride ion detection instrument for mineralization, oxygen, and chloride ion detection. The other path is filtered through the second filter and then divided into two paths for silicon content and hardness detection by the colorimetric method silicon content detection instrument and the electrode method hardness detection instrument.

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