Apparatus for measuring insolubles in oil

Abstract

The present disclosure provides a device for determining insoluble substances in oil products, which comprises a sample container for containing a sample, a sample mixing system, a sample feeding system, a filter and a control system; the sample mixing system comprises a solvent container for containing a solvent, a sample mixing pipeline and a first power mechanism arranged in the sample mixing pipeline; the sample mixing pipeline connects the sample container and the solvent container; the first power mechanism is used to provide power to deliver the solvent to the sample container to mix with the sample to form a mixed solution; the sample feeding system comprises a sample feeding pipeline and a second power mechanism arranged in the sample feeding pipeline; the sample feeding pipeline connects the sample container and an inlet of the filter; the second power mechanism is used to provide power to deliver the mixed solution to the filter; the filter is used to filter the insoluble substances in the mixed solution; an outlet of the filter is connected with a discharge pipeline, and the discharge pipeline is used to discharge the filtered mixed solution; and the control system is connected with the first power mechanism and the second power mechanism respectively.

Description

Technical Field

[0001] This disclosure relates to the field of testing equipment for petroleum or petroleum products, and in particular to a device for determining insoluble matter in petroleum products. Background Technology

[0002] Insoluble matter in petroleum or petroleum products can cause problems such as scaling, catalyst deactivation, and bed blockage during refining processes, or affect the functionality of the equipment. Therefore, accurate determination of insoluble matter in petroleum or petroleum products is necessary. One existing detection method is membrane filtration, which has advantages such as wide applicability, small sample and solvent usage, and fast analysis speed. However, membrane filtration still suffers from problems such as numerous manual steps, long testing time for a single sample, and prolonged contact time between personnel and solvents, resulting in low efficiency and adverse effects on personnel safety. Utility Model Content

[0003] A primary objective of this disclosure is to overcome at least one of the deficiencies of the prior art and to provide a device for determining insoluble matter in oil products that offers high efficiency and ensures personnel safety.

[0004] To achieve the above objectives, the present disclosure adopts the following technical solution:

[0005] According to one aspect of this disclosure, an apparatus for determining insoluble matter in oil products is provided, comprising a sample container for holding a sample, a mixing system, an injection system, a filter, and a control system; the mixing system includes a solvent container for holding a solvent, a mixing line, and a first power mechanism disposed on the mixing line; the mixing line connects the sample container and the solvent container; the first power mechanism provides power to deliver the solvent to the sample container for mixing with the sample to form a mixture; the injection system includes an injection line and a second power mechanism disposed on the injection line; the injection line connects the sample container and the inlet of the filter; the second power mechanism provides power to deliver the mixture to the filter; the filter filters insoluble matter in the mixture; the outlet of the filter is connected to a discharge line for discharging the filtered mixture; the control system is connected to both the first power mechanism and the second power mechanism.

[0006] According to one embodiment of this disclosure, the mixing system further includes a carrier gas source for delivering carrier gas to the sample container via the mixing line, so as to assist the solvent in mixing with the sample.

[0007] According to one embodiment of this disclosure, the sample mixing system further includes a three-way valve, and the control system is connected to the three-way valve; the sample mixing pipeline includes a main pipeline, a first sub-pipeline and a second sub-pipeline, one end of each of the main pipeline, the first sub-pipeline and the second sub-pipeline is respectively connected to the three passages of the three-way valve, and the other end of each is respectively connected to the sample container, the solvent container and the carrier gas source, and the first power mechanism is disposed on the first sub-pipeline.

[0008] According to one embodiment of this disclosure, the carrier gas is air or nitrogen.

[0009] According to one embodiment of this disclosure, the filter includes a removable filter element for filtering insoluble matter in the mixture.

[0010] According to one embodiment of this disclosure, a drying system is further included, the drying system being used to purge the filter with drying gas to dry the filter; the drying system includes a drying gas source, a drying pipeline and a control valve disposed on the drying pipeline; the drying pipeline is connected to the drying gas source and the filter or the sample inlet pipeline, and the control system is connected to the control valve.

[0011] According to one embodiment of this disclosure, it further includes a discharge container for collecting the mixture flowing through the filter; the discharge line connects the filter and the discharge container; wherein the discharge container is also connected to a vacuum line, the vacuum line is equipped with a vacuum pump, and the control system is connected to the vacuum pump.

[0012] According to one embodiment of this disclosure, the first power mechanism is a peristaltic pump or a plunger pump; and / or, the second power mechanism is a peristaltic pump or a plunger pump.

[0013] According to one embodiment of this disclosure, the material of the mixing line is glass, quartz, or polytetrafluoroethylene; and / or, the material of the injection line is glass, quartz, or polytetrafluoroethylene.

[0014] According to one embodiment of this disclosure, the filter is a needle-type membrane filter.

[0015] As can be seen from the above technical solution, the advantages and positive effects of the oil insoluble matter determination device proposed in this disclosure are as follows:

[0016] The apparatus for determining insoluble matter in oil products disclosed herein includes a sample container, a mixing system, an injection system, a filter, and a control system. The mixing system includes a solvent container, a mixing pipeline, and a first power mechanism. The mixing pipeline connects the sample container and the solvent container. The first power mechanism provides power to deliver the solvent to the sample container for mixing with the sample to form a mixture. The injection system includes an injection pipeline and a second power mechanism. The injection pipeline connects the sample container and the inlet of the filter. The second power mechanism provides power to deliver the mixture to the filter. The filter filters insoluble matter from the mixture. The filter outlet connects to a discharge pipeline for discharging the filtered mixture. The control system is connected to both the first and second power mechanisms. Through this structural design, this disclosure utilizes the control system to control each power mechanism, achieving automated operations such as sample dissolution and filtration, improving the automation level of the measuring device, significantly shortening experimental time, and increasing measurement efficiency. Furthermore, this disclosure eliminates the need for operators to perform specific operations such as sample dissolution and filtration; control commands are only issued through the control system, reducing the operational requirements for operators and preventing prolonged contact with chemical reagents, thus ensuring personnel safety. Attached Figure Description

[0017] The various objectives, features, and advantages of this disclosure will become more apparent from the following detailed description of preferred embodiments of the disclosure taken in conjunction with the accompanying drawings. The drawings are merely illustrative illustrations of the disclosure and are not necessarily drawn to scale. In the drawings, the same reference numerals always denote the same or similar parts. Wherein:

[0018] Figure 1 This is a system schematic diagram of an apparatus for measuring insoluble matter in oil products according to an exemplary embodiment;

[0019] Figure 2 yes Figure 1 The diagram shows the control relationship of the device for determining insoluble matter in oil.

[0020] The annotations in the attached figures are explained as follows:

[0021] 100. Sample container;

[0022] 200. Mixed sample system;

[0023] 210. Solvent container;

[0024] 221. Main Line;

[0025] 222. First sub-pipeline;

[0026] 223. Second sub-pipeline;

[0027] 230. First power mechanism;

[0028] 240. Three-way valve;

[0029] 300. Sample introduction system;

[0030] 310. Sample inlet line;

[0031] 320. Second power mechanism;

[0032] 400. Filter;

[0033] 500. Control system;

[0034] 600. Drying system;

[0035] 610. Drying pipeline;

[0036] 620. Control valve;

[0037] 710. Discharge container;

[0038] 720. Discharge pipeline;

[0039] 730. Vacuum lines;

[0040] 740. Vacuum pump. Detailed Implementation

[0041] Typical embodiments embodying the features and advantages of this disclosure will be described in detail in the following description. It should be understood that this disclosure can have various variations in different embodiments without departing from the scope of this disclosure, and the descriptions and drawings therein are illustrative in nature and not intended to limit this disclosure.

[0042] In the following description of various exemplary embodiments of this disclosure, reference is made to the accompanying drawings, which form part of this disclosure, and which illustrate by way of example different exemplary structures, systems, and steps that can implement various aspects of this disclosure. It should be understood that other specific embodiments of the components, structures, exemplary devices, systems, and steps may be used, and structural and functional modifications may be made without departing from the scope of this disclosure. Furthermore, while the terms “above,” “between,” “within,” etc., may be used in this specification to describe different exemplary features and elements of this disclosure, these terms are used herein only for convenience, such as the orientation according to the examples described in the accompanying drawings. Nothing in this specification should be construed as requiring a specific three-dimensional orientation of the structure to fall within the scope of this disclosure.

[0043] See Figure 1This illustration represents a system schematic diagram of the apparatus for determining insoluble matter in petroleum products according to the present disclosure. In this exemplary embodiment, the apparatus is described as being used to measure precipitates or suspensions that are insoluble in petroleum products and specified solvents, introduced or generated during the refining or use of petroleum products. It will be readily understood by those skilled in the art that various modifications, additions, substitutions, deletions, or other changes may be made to the specific embodiments described below to apply the relevant design of this disclosure to other types of insoluble matter determinations, and these changes remain within the scope of the principles of the apparatus for determining insoluble matter in petroleum products proposed in this disclosure.

[0044] During the refining or use of petroleum or petroleum products, some precipitates or suspended solids insoluble in oil and specified solvents may be introduced or generated, such as mud, sand, dust, iron filings, fibers, certain catalysts, carbon produced during decomposition or highly carbonized substances, and certain insoluble salts. When these substances are present in the processing feedstock, they may deposit in the refining unit, leading to problems such as scaling, catalyst deactivation, and bed blockage in subsequent processing, increasing refining costs. Furthermore, when these insoluble substances are present in the operating oil of the equipment, they can affect the machine's functionality, and in severe cases, cause machine malfunctions.

[0045] The determination principle disclosed herein is based on the general determination process of the membrane filtration method. The determination principle of the membrane filtration method is as follows: a certain amount of sample is weighed and dissolved in a specified solvent under specified conditions. Then, the mixture is filtered by a pre-weighed filter membrane. The substance retained on the filter membrane is the insoluble substance to be determined.

[0046] like Figure 1 As shown, in one embodiment of this disclosure, the apparatus for determining insoluble matter in oil products includes a sample container 100 for holding the sample, a sample mixing system 200, a sample injection system 300, a filter 400, and a control system 500. (See also...) Figure 2 , Figure 2 The diagram above represents a control relationship block diagram of a measuring device that embodies the principles of this disclosure. The structure, connection method, and functional relationship of the main components of the measuring device proposed in this disclosure will be described in detail below with reference to the above-mentioned figures.

[0047] like Figure 1 and Figure 2As shown, in one embodiment of this disclosure, the mixing system 200 includes a solvent container 210 for holding solvent, a mixing line, and a first power mechanism 230 disposed on the mixing line. The mixing line connects the sample container 100 and the solvent container 210. The first power mechanism 230 provides power to deliver the solvent to the sample container 100 for mixing with the sample to form a mixture. The injection system 300 includes an injection line 310 and a second power mechanism 320 disposed on the injection line 310. The injection line 310 connects the sample container 100 and the inlet of the filter 400, thereby enabling the injection of the mixture through the injection line 310. The second power mechanism 320 provides power to deliver the mixture to the filter 400. The filter 400 filters insoluble matter in the mixture, and the outlet of the filter 400 is connected to a discharge line 720 for discharging the filtered mixture. The control system 500 is connected to the first power mechanism 230 and the second power mechanism 320 respectively. Through the above structural design, this disclosure enables the control system 500 to control each power mechanism, automating operations such as sample dissolution and filtration, improving the automation level of the measuring device, significantly shortening experimental time, and increasing measurement efficiency. Furthermore, this disclosure eliminates the need for operators to perform specific steps such as sample dissolution and filtration; control commands are only issued through the control system 500, reducing the operational requirements for operators and preventing prolonged contact with chemical reagents, thus ensuring personnel safety. Additionally, by replacing different types of solvents or filter elements, the determination of various insoluble substances can be achieved, broadening its applicability.

[0048] Based on the above description of one embodiment of the oil insoluble matter determination device proposed in this disclosure, the determination steps using this device are as follows: Before determination, the filter element (e.g., filter cartridge, filter membrane, etc.) of the filter 400 is dried, cooled, and weighed. This process is repeated until a constant weight is achieved, and the weight is recorded as m1. The sample to be tested is heated and shaken thoroughly to ensure uniform mixing. A certain amount of the sample is weighed and recorded as m. The sample is diluted and dissolved with a solvent under specified conditions to obtain a mixture. The mixture is filtered using the filter 400 as required. After filtration, a solvent is separately supplied to rinse the filter 400. The filter element of the filter 400 is dried again, cooled, and weighed. This process is repeated until a constant weight is achieved, and the weight is recorded as m2. The content of insoluble matter is calculated, and the content can be recorded as ω%. The formula for the above calculation is: ω=[(m2-m1) / m]×100.

[0049] like Figure 1As shown, in one embodiment of this disclosure, the mixing system 200 may further include a carrier gas source for supplying carrier gas to the sample container 100 via a mixing line, thereby assisting in the mixing of the solvent and the sample. Through the above structural design, this disclosure enables the use of a carrier gas to achieve a more thorough mixing of the solvent and the sample. For example, bubbling can be used in the carrier gas line (e.g., the second sub-line 223 described below) to further dissolve the sample in the solvent.

[0050] like Figure 1 and Figure 2 As shown, based on the structural design of the sample mixing system 200 including a carrier gas source, in one embodiment of this disclosure, the sample mixing system 200 may further include a three-way valve 240, and the control system 500 is connected to the three-way valve 240 to realize the switching and control of the connection state of the three-way valve 240. Based on this, the sample mixing pipeline may include a main pipeline 221, a first sub-pipeline 222, and a second sub-pipeline 223. One end of each of the main pipeline 221, the first sub-pipeline 222, and the second sub-pipeline 223 is respectively connected to the three passages of the three-way valve 240. The other end of the main pipeline 221 is connected to the sample container 100, the other end of the first sub-pipeline 222 is connected to the solvent container 210, and the other end of the second sub-pipeline 223 is connected to the carrier gas source. A first power mechanism 230 is disposed on the first sub-pipeline 222. Through the above structural design, this disclosure can reduce the number of pipelines and control valve groups, simplify system complexity, and reduce costs.

[0051] Based on the structural design of the mixing system 200 including a carrier gas source, in one embodiment of this disclosure, a pipeline for supplying carrier gas to the sample container 100, namely the aforementioned main pipeline 221, has its other end extending to the bottom of the sample container 100, thereby ensuring more uniform bubbling.

[0052] Based on the structural design of the sample mixing system 200 including a carrier gas source, in one embodiment of this disclosure, the carrier gas can be air. In other embodiments of this disclosure, the carrier gas may also be a gas that is insoluble in the sample and solvent, such as nitrogen, and is not limited to this embodiment.

[0053] In one embodiment of this disclosure, the filter 400 may include a detachable filter element for filtering insoluble substances in the mixture. Taking a membrane filter 400 as an example, the filter element may be a filter membrane. In other embodiments of this disclosure, when the filter 400 employs other types of filtration devices, the filter element may also be other filtration structures, such as a filter cartridge. Through the above structural design, this disclosure adopts a detachable design for the filter element, which facilitates drying and weighing of the filter element, for example, facilitating the measurement of m1 and m2 in relevant measurement steps, making the measurement operation more convenient.

[0054] like Figure 1 and Figure 2 As shown, in one embodiment of this disclosure, the measuring device may further include a drying system 600, which is used to purge the filter 400 with drying gas to dry the filter 400 (e.g., a filter element). Specifically, the drying system 600 includes a drying gas source, a drying pipeline 610, and a control valve 620 disposed on the drying pipeline 610. The drying pipeline 610 is connected to the drying gas source and the filter 400 or the sample inlet pipeline 310, and the control system 500 is connected to the control valve 620 to control the opening and closing or the opening degree of the control valve 620. Through the above structural design, this disclosure can utilize the drying system 600 to dry the filter 400 without disassembling the filter 400 or the filter element and placing it in a drying device for drying, simplifying the operation steps, improving the automation level of the system, and thus improving work efficiency. In some other embodiments of this disclosure, the measuring device may not include a drying system 600, in which case the filter element of the filter 400 can be disassembled and placed in a drying device such as a drying oven for drying, and this is not limited to this embodiment.

[0055] like Figure 1 and Figure 2 As shown, in one embodiment of this disclosure, the measuring device may further include a discharge container 710 for collecting the mixture flowing through the filter 400. A discharge line 720 connects the outlet of the filter 400 and the discharge container 710. Furthermore, the discharge container 710 may be connected to a vacuum line 730, which is equipped with a vacuum pump 740. A control system 500 is connected to the vacuum pump 740 to control the vacuum pump 740. Through this structural design, in the process of conveying the mixture through the filter 400 for filtration, the present disclosure utilizes the vacuum pump 740 and the second power mechanism 320 provided in the mixing line to provide power; that is, the process of driving the mixture through the filter 400 for filtration can specifically be a vacuum filtration process.

[0056] In one embodiment of this disclosure, the first power mechanism 230 can be a peristaltic pump. Through the above design, this disclosure enables the quantitative delivery and addition of solvent using a peristaltic pump. In other embodiments of this disclosure, other metering pumps for quantitative solvent delivery and addition, such as plunger pumps, can also be selected, and this disclosure is not limited to this embodiment.

[0057] In one embodiment of this disclosure, the second power mechanism 320 can be a peristaltic pump. Through the above design, this disclosure enables the quantitative delivery and filtration of a mixture using a peristaltic pump. In other embodiments of this disclosure, other metering pumps for quantitative solvent delivery and addition, such as plunger pumps, can also be selected, and this disclosure is not limited to this embodiment.

[0058] In one embodiment of this disclosure, the material of the mixing line can be glass. Through the above design, this disclosure improves the resistance of the mixing line to organic reagents. In other embodiments of this disclosure, the material of the mixing line can also be other materials with resistance to organic reagents, such as quartz or polytetrafluoroethylene, and is not limited to this embodiment.

[0059] In one embodiment of this disclosure, the sample inlet line 310 can be made of glass. Through the above design, this disclosure improves the resistance of the sample inlet line 310 to organic reagents. In other embodiments of this disclosure, the sample inlet line 310 can also be made of other materials with resistance to organic reagents, such as quartz or polytetrafluoroethylene, and is not limited to this embodiment.

[0060] In one embodiment of this disclosure, when the measuring apparatus proposed in this disclosure further includes a drying line 610, the material of the drying line 610 can be glass. Through the above design, this disclosure can improve the resistance of the drying line 610 to organic reagents. In other embodiments of this disclosure, the material of the drying line 610 can also be other materials with resistance to organic reagents, such as quartz or polytetrafluoroethylene, and is not limited to this embodiment.

[0061] In one embodiment of this disclosure, when the measuring device proposed in this disclosure further includes an emission line 720, the material of the emission line 720 can be glass. Through the above design, this disclosure can improve the resistance of the emission line 720 to organic reagents. In other embodiments of this disclosure, the material of the emission line 720 can also be other materials with resistance to organic reagents, such as quartz, and is not limited to this embodiment.

[0062] In one embodiment of this disclosure, the filter 400 may be a needle-type membrane filter 400.

[0063] Based on the above detailed description of several exemplary embodiments of the measuring apparatus proposed in this disclosure, a specific procedure for determining insoluble matter in oil products using the measuring apparatus of this disclosure will be described in detail below:

[0064] The constant weight measurement steps for filter 400 (filter element): Measure the constant weight of filter 400. Place filter 400 in the pipeline. Control system 500 controls control valve 620 to open. Hot carrier gas is used to purge filter 400 to dry it. Then control system 500 controls control valve 620 to close. After filter 400 cools down, take the filter element to a balance and weigh it. Record the weight as m1. Then place filter 400 in the pipeline again.

[0065] Sampling steps: After heating the sample to be tested, shake it thoroughly to mix it evenly. Weigh a certain amount of the sample using a sample container 100, and record the weight as m.

[0066] Solvent dilution step: The control system 500 controls the first power mechanism 230 (peristaltic pump) to operate and controls the three-way valve 240 to switch the passage, connecting the main pipeline 221 with the first sub-pipeline 222, so that the solvent in the solvent container 210 is quantitatively added to the sample container 100. Then, the control system 500 controls the first power mechanism 230 to stop operating and controls the three-way valve 240 to switch the passage, connecting the main pipeline 221 with the second sub-pipeline 223, and turns on the carrier gas source to use bubbling to fully dissolve the sample in the solvent;

[0067] Filtration (vacuum filtration) step: The control system 500 controls the second power mechanism 320 (peristaltic pump) and vacuum pump 740 to work, so that the mixture passes through the filter 400;

[0068] Rinsing step: The control system 500 controls the second power mechanism 320 to work so that the solvent rinses the sample container 100 and the filter 400. After completion, the control system 500 controls the first power mechanism 230, the second power mechanism 320 and the vacuum pump 740 to stop working.

[0069] Drying Steps: Control system 500 opens control valve 620, and hot drying gas (e.g., hot carrier gas, specifically hot air) is supplied from the drying gas source to purge the filter 400 (filter element) containing insoluble matter, causing it to dry. Then, control system 500 closes control valve 620. After filter 400 cools down, the filter element is weighed again on a balance, and the weight is recorded as m2. Based on this, the content of insoluble matter (ω%) can be calculated using relevant formulas using m1, m2, and m obtained from the above steps.

[0070] Specifically, the toluene-insoluble matter in heavy oil was determined using the measuring device proposed in this disclosure. A heavy oil sample was weighed as a test sample, and the above steps were performed to carry out the measurement operation. Each heavy oil sample was measured in parallel three times, and the measurement results are shown in the table below.

[0071]

[0072] Table 1. Results of determination of toluene-insoluble matter in heavy oil slurry (ω%)

[0073] It should be noted that the apparatus for determining insoluble matter in oils shown in the accompanying drawings and described in this specification are merely a few examples among many measuring apparatuses capable of employing the principles of this disclosure. It should be clearly understood that the principles of this disclosure are by no means limited to any detail or component of the apparatus for determining insoluble matter in oils shown in the accompanying drawings or described in this specification.

[0074] In summary, the device for determining insoluble matter in oil products proposed in this disclosure includes a sample container 100, a mixing system 200, an injection system 300, a filter 400, and a control system 500. The mixing system 200 includes a solvent container 210, a mixing pipeline, and a first power mechanism 230. The mixing pipeline connects the sample container 100 and the solvent container 210. The first power mechanism 230 provides power to deliver the solvent to the sample container 100 for mixing with the sample to form a mixture. The injection system 300 includes an injection pipeline 310 and a second power mechanism 320. The injection pipeline 310 connects the sample container 100 and the inlet of the filter 400. The second power mechanism 320 provides power to deliver the mixture to the filter 400. The filter 400 filters insoluble matter from the mixture. The outlet of the filter 400 is connected to a discharge pipeline 720, which discharges the filtered mixture. The control system 500 is connected to both the first power mechanism 230 and the second power mechanism 320. Through the above structural design, this disclosure enables the control system 500 to control each power mechanism, thereby automating operations such as sample dissolution and filtration, improving the automation level of the measuring device, significantly shortening experimental time, and increasing measurement efficiency. Furthermore, this disclosure eliminates the need for operators to perform specific steps such as sample dissolution and filtration; control commands are only issued through the control system 500, reducing the operational requirements on operators and preventing prolonged contact with chemical reagents, thus ensuring personnel safety.

[0075] The foregoing has described and / or illustrated exemplary embodiments of the apparatus for determining insoluble matter in oil products according to this disclosure. However, the embodiments of this disclosure are not limited to the specific embodiments described herein; rather, components and / or steps of each embodiment may be used independently and separately from other components and / or steps described herein. Each component and / or step of one embodiment may also be used in combination with other components and / or steps of other embodiments. In describing the elements / components / etc. described and / or illustrated herein, the terms “a,” “an,” and “the above” are used to indicate the presence of one or more elements / components / etc. The terms “comprising,” “including,” and “having” are used to indicate an open-ended inclusion and mean that additional elements / components / etc. may exist in addition to those listed. Furthermore, the terms “first” and “second” in the claims and specification are used only as illustrative marks and are not intended to limit the numerical scope of the subject matter.

[0076] Although the apparatus for determining insoluble matter in oil products proposed in this disclosure has been described with respect to different specific embodiments, those skilled in the art will recognize that modifications may be made to the implementation of this disclosure within the spirit and scope of the claims.

Claims

1. An apparatus for determining insoluble matter in oil products, characterized in that: This includes sample containers, mixing systems, injection systems, filters, and control systems for holding the samples; The mixing system includes a solvent container for holding solvent, a mixing pipeline, and a first power mechanism disposed on the mixing pipeline; the mixing pipeline connects the sample container and the solvent container; the first power mechanism is used to provide power to deliver the solvent to the sample container and mix it with the sample to form a mixture; The sample introduction system includes a sample introduction line and a second power mechanism disposed on the sample introduction line; the sample introduction line is connected to the sample container and the inlet of the filter; The second power mechanism is used to provide power to deliver the mixture to the filter; The filter is used to filter insoluble substances in the mixture; the outlet of the filter is connected to a discharge line, which is used to discharge the filtered mixture. The control system is connected to the first power mechanism and the second power mechanism respectively.

2. The apparatus for determining insoluble matter in oil products according to claim 1, characterized in that, The mixing system also includes a carrier gas source, which is used to deliver carrier gas to the sample container via the mixing pipeline, so as to assist the solvent and sample in mixing.

3. The apparatus for determining insoluble matter in oil products according to claim 2, characterized in that, The sample mixing system also includes a three-way valve, and the control system is connected to the three-way valve; the sample mixing pipeline includes a main pipeline, a first sub-pipeline and a second sub-pipeline, one end of each of the main pipeline, the first sub-pipeline and the second sub-pipeline is respectively connected to the three passages of the three-way valve, and the other end of each is respectively connected to the sample container, the solvent container and the carrier gas source, and the first power mechanism is disposed on the first sub-pipeline.

4. The apparatus for determining insoluble matter in oil products according to claim 2, characterized in that, The carrier gas is either air or nitrogen.

5. The apparatus for determining insoluble matter in oil products according to claim 1, characterized in that, The filter includes a removable filter element for filtering insoluble substances in the mixture.

6. The apparatus for determining insoluble matter in oil products according to claim 1, characterized in that, It also includes a drying system for purging the filter with drying gas to dry the filter; the drying system includes a drying gas source, a drying pipeline and a control valve disposed on the drying pipeline; the drying pipeline is connected to the drying gas source and the filter or the sample inlet pipeline, and the control system is connected to the control valve.

7. The apparatus for determining insoluble matter in oil products according to claim 1, characterized in that, It also includes a discharge container for collecting the mixture flowing through the filter; the discharge line connects the filter and the discharge container; wherein the discharge container is also connected to a vacuum line, the vacuum line is equipped with a vacuum pump, and the control system is connected to the vacuum pump.

8. The apparatus for determining insoluble matter in oil products according to claim 1, characterized in that: The first power mechanism is a peristaltic pump or a plunger pump; and / or The second power mechanism is a peristaltic pump or a plunger pump.

9. The apparatus for determining insoluble matter in oil products according to claim 1, characterized in that: The material of the mixing pipeline is glass, quartz, or polytetrafluoroethylene; and / or The sample inlet line is made of glass, quartz, or polytetrafluoroethylene.

10. The apparatus for determining insoluble matter in oil products according to claim 1, characterized in that, The filter is a needle-type membrane filter.

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