Thickened oil high-temperature purification sewage multi-medium grading treatment device and detection method

Abstract

The present application relates to pry installation device and automation interlocking technical field, it is a kind of thick oil high temperature purification sewage multi-medium grading treatment device and detection method, the former includes silicon content detection instrument, hardness detection instrument, mineralization detection instrument, oxygen content detection instrument, chloride ion detection instrument, oil content detection instrument etc.;In the latter detection method, after the sample liquid to be analyzed is cooled, two ways directly detect the oil content and suspended solids of the cooled sample liquid, another way is filtered and cooled, three ways detect the mineralization, oxygen and chloride ion, another way is filtered, and silicon content and hardness are detected.The grading treatment device uses two-stage water cooling, three-stage filter core filtering 5-section sample liquid pretreatment technology, according to the detection requirements of different detection instruments, the sample liquid is shunted, the problem of mutual interference of each component in the sample liquid is solved, the accuracy of instrument detection is improved, and online detection of thick oil high temperature purification sewage is realized.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of pry installation device and automation interlocking, and is a thickened oil high-temperature purified sewage multi-medium grading treatment device and detection method. BACKGROUND

[0002] The core means of the current thickened oil development is to use a boiler to heat water into high-temperature high-pressure water vapor, and inject the water vapor into a stratum to reduce the viscosity of thickened oil. In order to reduce environmental pollution and improve the utilization rate of water, a thickened oil development unit separates oil and water in produced liquid, and the separated purified sewage is reused in the boiler. The quality of the purified sewage directly affects the stable operation of the boiler, and further affects the thickened oil development.

[0003] There are 21 nodes in the thickened oil purification sewage treatment process of the Wind City Oilfield operation area that need artificial detection of water quality. The detection contents include oil, suspension, silicon, hardness, mineralization, chloride ion, and oxygen content. The detection contents require instrument detection, as shown in Table 1. Currently, the quality of the purified sewage is monitored by artificial sampling and detection, and the sampling cycle is 4 to 6 hours. The detection results are greatly affected by human factors. Harmful substances in the purified sewage can easily affect the health of the sampling personnel. In addition, the thickened oil purification sewage is high-temperature multi-medium sewage, which is complex in composition and cannot be directly detected by an instrument. SUMMARY

[0004] The present application provides a thickened oil high-temperature purified sewage multi-medium grading treatment device and detection method, which overcomes the above-mentioned deficiencies of the prior art. The technical problem of difficulty in adapting the working condition of the existing high-temperature multi-medium sewage online monitoring instrument is effectively solved, online monitoring of the quality of the high-temperature multi-medium sewage is realized, and water quality fluctuations and historical data of the water quality can be reflected in real time.

[0005] One of the technical solutions of the present application is realized by the following measures: a thickened oil high-temperature sewage multi-medium grading treatment device, comprising a primary cooler, a three-stage filtering device, a secondary cooler, a filter two, a silicon content detection instrument, a hardness detection instrument, a mineralization degree detection instrument, an oxygen content detection instrument, a chlorine ion detection instrument, an oil content detection instrument, a suspended matter detection instrument, a sample liquid pipeline and a primary cooling pipeline, the primary cooler has two, the two primary coolers are arranged in parallel, the sample liquid pipeline is fixedly communicated with the liquid inlet ends of the two primary coolers respectively, the liquid outlet ends of the two primary coolers are fixedly communicated with the primary cooling pipeline respectively, the primary cooling pipeline is fixedly communicated with the oil content detection instrument and the suspended matter detection instrument respectively through sample inlet branch pipes, the three-stage filtering device has two groups, the two groups of three-stage filtering devices are arranged in parallel, each group of three-stage filtering devices comprises a primary filter, a secondary filter and a tertiary filter, the primary filter, the secondary filter and the tertiary filter are arranged in series, the primary cooling pipeline is fixedly communicated 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 tertiary filter of each group of three-stage filtering devices is fixedly communicated with the liquid inlet end of the secondary cooler, the liquid outlet end of the secondary cooler is fixedly communicated with the mineralization degree detection instrument, the oxygen content detection instrument and the chlorine ion detection instrument through sample inlet branch pipes respectively, the liquid outlet end of the secondary cooler is fixedly communicated with the liquid inlet end of the filter two, and the liquid outlet end of the filter two is fixedly communicated with the silicon content detection instrument and the hardness detection instrument through sample inlet branch pipes respectively.

[0006] The following is a further optimization or / and improvement of the above-mentioned one of the technical solutions of the present application:

[0007] The primary cooler and the secondary cooler are both shell-and-tube coolers.

[0008] The primary filter is a filter with a 250-mesh stainless steel filter core, the secondary filter is a filter with a 100-mesh stainless steel filter core, and the tertiary filter is a filter with a 60-mesh wire-wound filter core.

[0009] The filter two is a filter with a 250-mesh ceramic filter core.

[0010] The silicon content detection instrument is a colorimetric silicon content detection instrument, the hardness detection instrument is an electrode hardness detection instrument, the mineralization degree detection instrument is an electrode mineralization degree detection instrument, the oxygen content detection instrument is a current oxygen content detection instrument, the chlorine ion detection instrument is an electrode chlorine ion detection instrument, the oil content detection instrument is an ultraviolet fluorescence oil content detection instrument, and the suspended matter detection instrument is a light transmission suspended matter detection instrument.

[0011] The thickened oil high-temperature purified sewage multi-medium grading treatment device further comprises a cooling water main pipe, the cooling water main pipe is fixedly communicated with the water inlet end of each first cooler and the water inlet end of the second cooler, the water outlet end of each first cooler and the water outlet end of the second cooler are fixedly communicated with a backwater pipeline, and the backwater pipeline corresponding to the second cooler is fixedly communicated with the liquid inlet end of the second filter through a cleaning pipeline.

[0012] An electromagnetic valve is fixedly installed at the sample inlet 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 sample inlet branch connected to the liquid inlet end of the hardness detection instrument.

[0013] A pressure gauge and a temperature transmitter are fixedly installed on the sample liquid pipeline.

[0014] The pressure and temperature data of the fluid are collected through the pressure gauge and the temperature transmitter arranged on the sample liquid pipeline and the like, and can be sent to the PLC controller.

[0015] The second technical solution of the present application is realized through the following measures: a detection method of a thickened oil high-temperature purified sewage multi-medium grading treatment device, which is performed according to the following method:

[0016] The sample liquid to be analyzed is divided into three paths after being cooled by the first cooler, two paths are directly subjected to oil content detection and suspended matter detection through an ultraviolet fluorescence method oil content detection instrument and a light transmission method suspended matter detection instrument respectively, and the other path is sequentially subjected to three-stage filtration through the three-stage filtration device and two-stage cooling through the second cooler, and then is divided into four paths, three paths are subjected to mineralization degree detection, oxygen detection and chloride ion detection through an electrode method mineralization degree detection instrument, a current method oxygen content detection instrument and an electrode method chloride ion detection instrument respectively, and the other path is filtered through the second filter and then is divided into two paths, which are subjected to silicon content detection and hardness detection through a colorimetric method silicon content detection instrument and an electrode method hardness detection instrument respectively.

[0017] The grading treatment device utilizes a 5-stage sample liquid pretreatment technology of two-stage water cooling and three-stage filter core filtration, divides the sample liquid according to the detection requirements of different detection instruments, solves the problem of mutual interference of components in the sample liquid, improves the detection accuracy of the instruments, and realizes online detection of thickened oil high-temperature purified sewage. BRIEF DESCRIPTION OF DRAWINGS

[0018] ATTACHED Figure 1 The present application discloses a thickened oil high-temperature purified sewage multi-medium grading treatment device.

[0019] The codes in the drawings are as follows: 1 is a first cooler, 2 is a second cooler, 3 is a second filter, 4 is a first filter, 5 is a second filter, 6 is a third filter, 7 is a silicon content detection instrument, 8 is a hardness detection instrument, 9 is a mineralization degree 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 first cooling pipeline, 16 is a liquid inlet branch pipe, 17 is a sample inlet branch pipe, 18 is a cooling water main pipe, 19 is a backwater pipeline, 20 is a cleaning pipeline, and 21 is an electromagnetic valve. DETAILED DESCRIPTION

[0020] The present application is not limited by the following examples, and the specific implementation can be determined according to the technical solution of the present application and the actual situation.

[0021] In the present application, in order to facilitate the description, the relative position relationship of each component is described according to the layout mode in the drawings attached to the specification, such as the position relationship of front, back, top, bottom, left, right, etc. is determined according to the layout direction of the drawings attached to the specification. Figure 1 Figure 1

[0022] In the present application, unless otherwise specified, the equipment and instruments used are all existing commonly known and commonly used equipment and instruments.

[0023] The present application will be further described below in combination with examples:

[0024] Example 1: as shown in the attached drawings, a sample is taken from a water source, and the sample is cooled by a first cooler 1, a second cooler 2, a second filter 3, a first filter 4, a second filter 5, a third filter 6, a silicon content detection instrument 7, a hardness detection instrument 8, a mineralization degree 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, a first cooling pipeline 15, a liquid inlet branch pipe 16, a sample inlet branch pipe 17, a cooling water main pipe 18, a backwater pipeline 19, a cleaning pipeline 20, and an electromagnetic valve 21. Figure 1 ​​As shown, the thick oil high-temperature purified sewage multi-medium grading treatment device comprises a first cooler 1, a three-stage filtering device, a second cooler 2, a second filter 3, a silicon content detection instrument 7, a hardness detection instrument 8, a mineralization degree detection instrument 9, an oxygen content detection instrument 10, a chlorine ion detection instrument 11, an oil content detection instrument 12, a suspended matter detection instrument 13, a sample liquid pipeline 14 and a first cooling pipeline 15, the first cooler 1 is provided with two first coolers 1, the two first coolers 1 are provided in parallel, the sample liquid pipeline 14 is fixedly communicated with the liquid inlet ends of the two first coolers 1 respectively, the liquid outlet ends of the two first coolers 1 are fixedly communicated with the first cooling pipeline 15 respectively, the first cooling pipeline 15 is fixedly communicated with the oil content detection instrument 12 and the suspended matter detection instrument 13 respectively through a sample inlet branch pipe 17, the three-stage filtering device is provided with two groups, the two groups of three-stage filtering devices are provided in parallel, each group of three-stage filtering devices comprises a first filter 4, a second filter 5 and a third filter 6, the first filter 4, the second filter 5 and the third filter 6 are sequentially connected in series, the first cooling pipeline 15 is fixedly communicated with the liquid inlet end of the first filter 4 of each group of three-stage filtering devices through a liquid inlet branch pipe 16, the liquid outlet end of the third filter 6 of each group of three-stage filtering devices is fixedly communicated with the liquid inlet end of the second cooler 2, the liquid outlet end of the second cooler 2 is fixedly communicated with the mineralization degree detection instrument 9, the oxygen content detection instrument 10 and the chlorine ion detection instrument 11 respectively through the sample inlet branch pipe 17, the liquid outlet end of the second cooler 2 is fixedly communicated with the liquid inlet end of the second filter 3, and the liquid outlet end of the second filter 3 is fixedly communicated with the silicon content detection instrument 7 and the hardness detection instrument 8 respectively through the sample inlet branch pipe 17.

[0025] Based on the characteristics of the high-temperature multi-medium sewage such as temperature, pressure and flow rate and the requirements of the detection instruments on the temperature, pressure and flow rate of the high-temperature multi-medium sewage, the pressure and flow rate of the high-temperature multi-medium sewage basically meet the requirements of the detection instruments, but the temperature is too high and needs to be cooled. Therefore, the sample liquid is cooled by the first cooler 1, the temperature change caused by cooling has little effect on the concentrations of the seven parameters, and the oil content and the suspended matter of the sample liquid can be detected by the oil content detection instrument 12 and the suspended matter detection instrument 13 respectively after being cooled by the first cooler; the remaining five parameters need to be filtered to exclude the interference of oil and suspended matter, therefore, the sample liquid cooled by the first cooler is continuously filtered by the three-stage filtering device and cooled by the second cooler, and then detected by the mineralization degree detection instrument 9, the oxygen content detection instrument 10 and the chlorine ion detection instrument 11; before the detection work, the silicon content detection instrument 7 and the hardness detection instrument 8 need to continue to filter the sample liquid cooled by the second cooler to meet the detection requirements of the silicon content detection instrument 7 and the hardness detection instrument 8.

[0026] The tube-type cooler is selected, the raw water in the inlet pipeline of the on-site deaerator can be used as a cooling source to cool the sample liquid in two stages.

[0027] The comparison between the present application and the prior art of the same type is shown in Table 2.

[0028] As shown in Table 2, regarding water treatment technology:

[0029] The common points of the present application and the prior art are: 1) both use filtering devices; 2) some pre-treatment devices use multi-stage filtering treatment;

[0030] The differences between the present application and the prior art are: 1) different water sample detection: the prior art is for ordinary water quality (river water, tap water, salt water, etc.); the present application is for thick oil multi-medium sewage; 2) different device design: similar prior art mostly filters suspended impurities in normal temperature liquid; the present application is for high temperature multi-medium liquid, and soluble and insoluble impurities are mixed and treated in stages.

[0031] Regarding water quality online monitoring technology:

[0032] The common points of the present application and the prior art are: 1) both use instruments for detection; 2) both have pre-treatment and control logic functions before detection;

[0033] The differences between the present application and the prior art are: 1) different application scenarios: similar prior art is applied to water treatment units such as water plants, reservoirs and domestic water; the present application is applied to high temperature multi-medium sewage field; 2) similar prior art generally processes common indicators such as bacteria, PH and ammonia nitrogen, improves process, controls sampling, valve switching and data remote transmission; the present application is for high temperature multi-medium (7 items) sewage detection instrument, designs cooling and staged filtering system, detects different indicators, and can increase or decrease modules and detection items as needed.

[0034] Embodiment 2: As an optimization of the above embodiment, the first-stage cooler 1 and the second-stage cooler 2 are both shell-and-tube coolers.

[0035] Embodiment 3: As an optimization of the above embodiment, the first-stage filter 4 is a filter with a 250-mesh stainless steel filter element, the second-stage filter 5 is a filter with a 100-mesh stainless steel filter element, and the third-stage filter 6 is a filter with a 60-mesh wire-wound filter element.

[0036] The comparison of selection tests of the third-stage filtering device is shown in Table 4. As shown in Table 4, the selection of the first-stage filter 4, the second-stage filter 5 and the third-stage filter 6 can enable floating oil to be intercepted by stainless steel and wire-wound filter elements, prolong the service life of the wire-wound filter element and improve the filtering effect.

[0037] Embodiment 4: As an optimization of the above embodiment, the filter two 3 is a filter with a 250-mesh ceramic filter element.

[0038] 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.

[0039] Embodiment 6: As an optimization of the above-mentioned embodiments, the silicon content detection instrument 7 is selected as a colorimetric silicon content detection instrument, the hardness detection instrument 8 is selected as an electrode method hardness detection instrument, the mineralization detection instrument 9 is selected as an electrode method mineralization detection instrument, the oxygen content detection instrument 10 is selected as a current method oxygen content detection instrument, the chloride ion detection instrument 11 is selected as an electrode method chloride ion detection instrument, the oil content detection instrument 12 is selected as an ultraviolet fluorescence method oil content detection instrument, and the suspended matter detection instrument 13 is selected as a light transmission method suspended matter detection instrument.

[0040] The inventors of the present application studied the technical principles of 12 kinds of water quality detection methods such as colorimetric method and electrode method, established the water quality online detection indexes and the water quality online detection technology suitable for high-temperature multi-medium sewage, that is, the combination of the colorimetric silicon content detection instrument, the electrode method hardness detection instrument, the electrode method mineralization detection instrument, the current method oxygen content detection instrument, the electrode method chloride ion detection instrument, the ultraviolet fluorescence method oil content detection instrument, and the light transmission method suspended matter detection instrument.

[0041] The comparison table of manual detection and the indexes (7 detection contents of oil content, suspended matter, silicon, hardness, mineralization, chloride ion, and oxygen content) detected by the instrument detection technology (thick oil high-temperature purification sewage multi-medium grading treatment device) described in the present application is shown in Table 3.

[0042] As can be seen from Table 3, the detection time using the device is shorter, more timely, and the error is smaller.

[0043] The use of the instrument of the type can significantly reduce the cost of the detection instrument, and the specific comparison is shown in Table 5.

[0044] The colorimetric silicon content detection instrument can use a silicon dioxide analyzer with model BQG GSGG-5089Pro; the specific parameters of the silicon dioxide analyzer are shown in Table 6.

[0045] The electrode method hardness detection instrument can use a water quality online hardness meter with model BQG PFG-3085; the specific parameters of the water quality online hardness meter are shown in Table 7.

[0046] The electrode method mineralization detection instrument can use a CON5101-GY inductive electrode conductivity meter from Xuetong; the specific parameters of the inductive electrode conductivity meter are shown in Table 8.

[0047] The current method oxygen content detection instrument can use an online dissolved oxygen analyzer with model Xuetong OXY5402A; the specific parameters of the online dissolved oxygen analyzer are shown in Table 9.

[0048] The electrode method chloride ion detection instrument can use an online chloride ion concentration instrument with model Xuetong 5903; the specific parameters of the online chloride ion concentration instrument are shown in Table 10.

[0049] The oil content detection instrument by ultraviolet fluorescence method can adopt the water oil analyzer of Xiangtong XT-5907. The specific parameters of the water oil analyzer are shown in Table 11.

[0050] The suspended matter detection instrument by light transmission method can adopt the turbidimeter of Xiangtong 5901A MLSS. The specific parameters of the turbidimeter are shown in Table 12.

[0051] In the embodiment 7, as an optimization of the above embodiments, the thickened oil high-temperature purified sewage multi-medium grading treatment device further comprises a cooling water main pipe 18, the cooling water main pipe 18 is fixedly communicated with the water inlet end of each first cooler 1 and the water inlet end of the second cooler 2, the water outlet end of each first cooler 1 and second cooler 2 is fixedly communicated with a backwater pipeline 19, and the backwater pipeline 19 corresponding to the second cooler 2 is fixedly communicated with the liquid inlet end of the filter two 3 through a cleaning pipeline 20.

[0052] In the embodiment 8, as an optimization of the above embodiments, an electromagnetic valve 21 is fixedly installed at the sampling branch pipe 17 communicated with the liquid inlet end of the silicon content detection instrument 7, and an electromagnetic valve 21 is fixedly installed at the liquid outlet end of the silicon content detection instrument 7, and an electromagnetic valve 21 is fixedly installed at the sampling branch pipe 17 communicated with the liquid inlet end of the hardness detection instrument 8.

[0053] Other pipelines of the device can be installed with valves such as electromagnetic valves according to actual needs.

[0054] The liquid outlet end of the silicon content detection instrument 7, the hardness detection instrument 8, the mineralization degree 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 communicated with a blowdown pipeline.

[0055] The electromagnetic valve 21 at the cleaning pipeline 20 is opened, and the filter two 3 and the sampling branch pipe 17 communicated with the liquid inlet end of the silicon content detection instrument 7 and the liquid inlet end of the hardness detection instrument 8 are cleaned through the cleaning pipeline 20, so as to avoid the pollution of the silicon content detection instrument 7 pipeline and optical lens by oil and suspended matter in the sample liquid.

[0056] Meanwhile, in view of the problem that the silicon content detection instrument 7 pipeline and optical lens are easily polluted 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 water, and one electromagnetic valve 21 is installed at the inlet and outlet of the silicon content detection instrument 7 to realize periodic sampling (every 2 hours), which can be controlled by PLC time sequence, and the sample liquid and clean water are switched once every 2 hours to prolong the service life of the instrument.

[0057] The programmable logic control technology (PLC controller or existing known industrial controller) is used to design the sample liquid / clean water periodic switching, silicon content detection instrument 7 outlet blocking and other interlocking control functions to solve the problems of instrument damage by high-temperature sample liquid, pipeline blockage, sample liquid corrosion of the meter head and the like.

[0058] Example 9: The detection method of the heavy oil high-temperature purified sewage multi-medium grading treatment device described in the above examples is carried out according to the following method:

[0059] The sample liquid to be analyzed is divided into three paths after being cooled by the first cooler 1. Two paths directly use the ultraviolet fluorescence method oil content detection instrument and the light transmission method suspended solids detection instrument to detect the oil content and suspended solids of the cooled sample liquid, respectively. The other path sequentially passes through the three-stage filtration of the three-stage filtration device and the two-stage cooling of the second cooler 2, and is divided into four paths. Three paths pass through the electrode method salinity detection instrument, the current method oxygen content detection instrument and the electrode method chloride ion detection instrument to detect salinity, oxygen and chloride ion, respectively. The other path passes through the filter 2 3, and is divided into two paths. The two paths pass through the colorimetric method silicon content detection instrument and the electrode method hardness detection instrument to detect the silicon content and hardness, respectively.

[0060] Field test:

[0061] The project (heavy oil high-temperature purified sewage multi-medium grading treatment device) has been field tested in the softener room of No. 1 heavy oil combined treatment station in Fengcheng Oilfield operation area for 6 months. The high-temperature multi-medium sewage water quality at the inlet node of the softener is detected. During the period, the system has undergone 9 times of adaptive improvement. A total of 12 times of data anomalies have been monitored. After on-site verification, it is determined that there are 5 times of water quality fluctuations, 4 times of on-site maintenance, 3 times of instrument failure, and the water quality is normal during the rest of the time. After the on-site investigation by the expert group of Xinjiang Oilfield Company, the technical route and construction idea of the project are affirmed, and the experiment is successful.

[0062] The device (heavy oil high-temperature purified sewage multi-medium grading treatment device) has been popularized and applied in the 20000m³ / d softener room of No. 2 heavy oil combined treatment station in Fengcheng Oilfield operation area. The high-temperature multi-medium sewage water quality at the inlet node of the softener is detected. The device has been formally put into use in No. 1 and No. 2 heavy oil combined treatment stations in Fengcheng Oilfield operation area for 2 years, providing effective protection for the 50,000m³ / d heavy oil purified sewage reuse boiler in Fengcheng Oilfield operation area.

[0063] After the device is put into use, the water quality is monitored online, the sewage is reused up to standard, the water resource utilization rate is improved, and good social and ecological benefits are achieved. The water quality data is changed from "point sampling and dispersion" to "continuous and real-time", which is convenient for researchers to analyze the water quality treatment effect of the key node, guide the regulation and control of the heavy oil water treatment process, optimize the dosing, improve the water quality control ability, realize the "water quality fluctuation early warning, upstream process adjustment and downstream water quality up to standard", and reduce the risk of production operation system.

[0064] The above technical features constitute the embodiments of the present application, which have strong adaptability and implementation effect. Non-essential technical features can be added or reduced according to actual needs to meet the needs of different situations.

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Claims

1. A multi-medium grading treatment device for thick oil high-temperature purified sewage, characterized in that The device comprises a primary cooler, a three-stage filtering device, a secondary cooler, a filter two, 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, a suspended matter detection instrument, a sample liquid pipeline and a primary cooling pipeline, the primary cooler has two, the two primary coolers are arranged in parallel, the sample liquid pipeline is fixedly communicated with the liquid inlet ends of the two primary coolers respectively, the liquid outlet ends of the two primary coolers are fixedly communicated with the primary cooling pipeline respectively, the primary cooling pipeline is fixedly communicated with the oil content detection instrument and the suspended matter detection instrument through sample inlet branch pipes respectively, the three-stage filtering device has two groups, the two groups of three-stage filtering devices are arranged in parallel, each group of three-stage filtering devices comprises a first-stage filter, a second-stage filter and a third-stage filter, the first-stage filter, the second-stage filter and the third-stage filter are arranged in series, the primary cooling pipeline is fixedly communicated 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 communicated with the liquid inlet end of the secondary cooler, the liquid outlet end of the secondary cooler is fixedly communicated with the mineralization degree detection instrument, the oxygen content detection instrument and the chloride ion detection instrument through sample inlet branch pipes respectively, the liquid outlet end of the secondary cooler is fixedly communicated with the liquid inlet end of the filter two, and the liquid outlet end of the filter two is fixedly communicated with the silicon content detection instrument and the hardness detection instrument through sample inlet branch pipes respectively.

2. The thickened oil high temperature purification sewage multi-medium grading treatment device according to claim 1, characterized in that The primary cooler and the secondary cooler are both shell-and-tube coolers.

3. The apparatus for multi-medium grading treatment of heavy oil high-temperature purified sewage water according to claim 1 or 2, characterized in that The first-stage filter is a filter with a 250-mesh stainless steel filter core, the second-stage filter is a filter with a 100-mesh stainless steel filter core, and the third-stage filter is a filter with a 60-mesh wire-wound filter core; or / and, the filter two is a filter with a 250-mesh ceramic filter core.

4. The multi-medium grading treatment device for thick oil high-temperature purification sewage according to claim 1 or 2, characterized in that The silicon content detection instrument is a colorimetric silicon content detection instrument, the hardness detection instrument is an electrode hardness detection instrument, the mineralization degree detection instrument is an electrode mineralization degree detection instrument, the oxygen content detection instrument is a current oxygen content detection instrument, the chloride ion detection instrument is an electrode chloride ion detection instrument, the oil content detection instrument is an ultraviolet fluorescence oil content detection instrument, and the suspended matter detection instrument is a light transmission suspended matter detection instrument.

5. The apparatus for multi-medium grading treatment of heavy oil high-temperature purified sewage water according to claim 3, characterized in that The silicon content detection instrument is a colorimetric silicon content detection instrument, the hardness detection instrument is an electrode hardness detection instrument, the mineralization degree detection instrument is an electrode mineralization degree detection instrument, the oxygen content detection instrument is a current oxygen content detection instrument, the chloride ion detection instrument is an electrode chloride ion detection instrument, the oil content detection instrument is an ultraviolet fluorescence oil content detection instrument, and the suspended matter detection instrument is a light transmission suspended matter detection instrument.

6. The device according to claim 1 or 2 or 5, characterized in that The device further comprises a cooling water main pipeline, the cooling water main pipeline is fixedly communicated with the water inlet ends of each primary cooler and the water inlet end of the secondary cooler, the water outlet ends of each primary cooler and the secondary cooler are fixedly communicated with a backwater pipeline, and a cleaning pipeline is fixedly communicated between the backwater pipeline corresponding to the secondary cooler and the liquid inlet end of the filter two.

7. The apparatus according to claim 3, wherein the apparatus is characterized by The cooling water main pipe is fixedly communicated with the water inlet end of each primary cooler and the water inlet end of the secondary cooler.

8. The apparatus according to claim 4, wherein the apparatus is characterized by The cooling water main pipe is fixedly communicated with the water inlet end of each primary cooler and the water inlet end of the secondary cooler.

9. The device according to claim 1 or 2 or 5 or 7 or 8, characterized in that The sample branch pipe communicated with the liquid inlet end of the silicon content detection instrument is fixedly provided with an electromagnetic valve, the liquid outlet end of the silicon content detection instrument is fixedly provided with an electromagnetic valve, and the sample branch pipe communicated with the liquid inlet end of the hardness detection instrument is fixedly provided with an electromagnetic valve.

10. A detection method of the multi-medium grading treatment device for thick oil high-temperature purified sewage according to any one of claims 1 to 9, characterized in that The following method is used: The sample liquid is divided into three paths after being cooled by the primary cooler, two paths are directly used for oil content detection by the ultraviolet fluorescence method and suspended matter detection by the light transmission method, and the other path is sequentially filtered by the three-stage filtering device and cooled by the secondary cooler, and then divided into four paths, three paths are used for mineralization degree detection by the electrode method, oxygen content detection by the current method and chloride ion detection by the electrode method, and the other path is filtered by the filter two and then divided into two paths, which are used for silicon content detection by the colorimetric method and hardness detection by the electrode method. The following method is used:

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