Hydrogenation test device

Abstract

The utility model relates to the technical field of test equipment, and provides a hydrogenation test device. Comprising a hydrogenation mixing pipeline, a hydrogenation reaction device, a separation device and a first liquid dechlorination tank, an inlet of the hydrogenation reaction device is connected with the hydrogenation mixing pipeline through a pipeline; an outlet of the hydrogenation reaction device is connected with the separation device through a pipeline; and a first liquid dechlorination tank is arranged on the pipeline between the hydrogenation reaction device and the separation device. According to the hydrogenation test device provided by the utility model, the first liquid dechlorination tank is arranged, so that when substances such as chlorine-containing additives or chlorides contained in raw materials are promoted to be converted into hydrogen chloride by a catalyst, the substances can be effectively removed by the first liquid dechlorination tank, and the substances are prevented from being remained in the hydrogenation test device for a long time to damage devices; the problems of corrosion perforation and the like are prevented, and the safety is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of test equipment, in particular to a hydrogenation test device. Background Art

[0002] The hydrogenation test device is a test device frequently used by technicians for catalyst screening and evaluation, performance testing, life testing, and simulated industrial plant operating condition testing. Its use process is relatively simple, the amount of raw materials used is relatively small, the test process is compact, and the test is relatively convenient and quick to carry out. It is widely used in scientific research institutions and universities engaged in hydrogenation.

[0003] In existing hydrogenation test devices, stainless steel is mainly used as the manufacturing material for reactors, high-pressure separators, pipelines, valves, etc. However, these devices encounter serious problems when processing raw materials with high chlorine content (such as waste plastic oil, waste lubricating oil, etc.). Since the raw materials contain chlorine-containing additives or chlorides, during the hydrogenation process, the catalyst will cause these substances to be converted into hydrogen chloride. Hydrogen chloride has a certain corrosion resistance to stainless steel. In the case of long-term or high-concentration contact with hydrogen chloride, it may cause corrosion perforation, thereby causing safety hazards. Especially in high-pressure equipment pipelines, this may cause leakage of high-temperature and high-pressure materials, which in turn may cause accidents such as fire and explosion, and there are great safety hazards in practical applications. Utility Model Content

[0004] The utility model provides a hydrogenation test device, which is used to solve the problem of potential safety hazards in the prior art hydrogenation test device when processing raw materials with high chlorine content.

[0005] The utility model provides a hydrogenation test device, comprising a hydrogenation mixing pipeline, a hydrogenation reaction device, a separation device and a first liquid dechlorination tank;

[0006] The inlet of the hydrogenation reaction device is connected to the hydrogenation mixing pipeline through a pipeline, and the outlet of the hydrogenation reaction device is connected to the separation device through a pipeline;

[0007] The pipeline between the hydrogenation reaction device and the separation device is provided with the first liquid dechlorination tank.

[0008] According to a hydrogenation test device provided by the utility model, the hydrogenation reaction device comprises a hydrogenation pretreatment reactor and a hydrogenation main reactor;

[0009] The inlet of the hydrogenation pretreatment reactor is connected to the hydrogenation mixing pipeline, the outlet of the hydrogenation pretreatment reactor is connected to the inlet of the hydrogenation main reactor, and the outlet of the hydrogenation main reactor is connected to the separation device.

[0010] A hydrogenation test device provided by the utility model also includes:

[0011] A second liquid dechlorination tank is disposed between the outlet of the hydrogenation pretreatment reactor and the inlet of the hydrogenation main reactor.

[0012] According to a hydrogenation test device provided by the utility model, the separation device includes a high-pressure separator and a low-pressure separator;

[0013] The inlet of the high-pressure separator is connected to the separation device, the liquid outlet of the high-pressure separator is connected to the inlet of the low-pressure separator, the gas outlet of the low-pressure separator outputs a gas product, and the liquid outlet of the low-pressure separator outputs a liquid product.

[0014] A hydrogenation test device provided by the utility model also includes:

[0015] A compressor, wherein the air inlet of the compressor is connected to the gas outlet of the high-pressure separator through a pipeline, and the air outlet of the compressor is connected to the hydrogenation mixing pipeline.

[0016] A hydrogenation test device provided by the utility model also includes:

[0017] The gas dechlorination tank is arranged between the air inlet of the compressor and the gas outlet of the high-pressure separator.

[0018] According to a hydrogenation test device provided by the utility model, the hydrogenation mixing pipeline includes a raw oil supply pipeline, a hydrogen supply pipeline and a mixing pipeline, one end of the raw oil supply pipeline and one end of the hydrogen supply pipeline are respectively connected to the first end of the mixing pipeline, and the second end of the mixing pipeline is connected to the hydrogenation reaction device.

[0019] According to a hydrogenation test device provided by the utility model, the gas outlet of the compressor is connected to the hydrogen supply pipeline.

[0020] According to a hydrogenation test device provided by the utility model, the pipeline in the hydrogenation test device is made of a material resistant to hydrogen chloride corrosion.

[0021] According to a hydrogenation test device provided by the utility model, a pipeline in the hydrogenation test device is provided with an inner lining or inner coating made of a material resistant to hydrogen chloride corrosion.

[0022] The hydrogenation test device provided by the utility model is provided with a first liquid dechlorination tank. When chlorine-containing additives or chlorides contained in the raw materials are converted into hydrogen chloride by the catalyst, they can be effectively removed by the first liquid dechlorination tank, so as to prevent them from being retained in the hydrogenation test device for a long time to damage the device, prevent the occurrence of corrosion perforation and other problems, and improve safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 It is a structural schematic diagram of a hydrogenation test device provided by the utility model;

[0025] Reference numerals:

[0026] 1. Crude oil supply pipeline; 2. Hydrogen supply pipeline; 3. Mixing pipeline; 4. Hydrogenation pretreatment reactor; 5. Second liquid dechlorination tank; 6. Hydrogenation main reactor; 7. First liquid dechlorination tank; 8. High-pressure separator; 9. Low-pressure separator; 10. Gas dechlorination tank; 11. Compressor; 12. Gas product outlet; 13. Liquid product outlet. DETAILED DESCRIPTION

[0027] The following is a further detailed description of the implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but cannot be used to limit the scope of the present invention.

[0028] In the description of the embodiments of the present utility model, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the embodiments of the present utility model. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0029] In the description of the embodiments of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present utility model can be understood according to specific circumstances.

[0030] In the embodiments of the present invention, unless otherwise clearly specified and limited, the first feature being "above" or "below" the second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0031] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model embodiment. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0032] Combine the following Figure 1 The hydrogenation test device of the utility model is described, which includes a hydrogenation mixing pipeline, a hydrogenation reaction device, a separation device and a first liquid dechlorination tank 7;

[0033] The inlet of the hydrogenation reaction device is connected to the hydrogenation mixing pipeline through a pipeline, and the outlet of the hydrogenation reaction device is connected to the separation device through a pipeline;

[0034] The pipeline between the hydrogenation reaction device and the separation device is provided with a first liquid dechlorination tank 7 .

[0035] In this embodiment, the hydrogenation mixing pipeline is the front-end component of the device, which is responsible for accurately mixing the crude oil and hydrogen in a specific ratio and transmitting the mixed fluid to the hydrogenation reaction device. The catalytic reaction chamber integrated in the hydrogenation reaction device can effectively promote the deep hydrogenation reaction between the crude oil and hydrogen under suitable conditions, thereby achieving the purpose of removing impurities and improving chemical properties.

[0036] In the process of hydrogenation reaction, hydrogen chloride byproduct is inevitably produced. Since hydrogen chloride is corrosive, if it is not removed in time, long-term accumulation will cause serious corrosion damage to the internal structure of the equipment, and may even form perforations, causing safety hazards. Therefore, in the pipeline system between the hydrogenation reaction device and the subsequent separation device, a first liquid dechlorination tank 7 is specially set.

[0037] The first liquid dechlorination tank 7 is equipped with a dechlorinating agent, which can fully contact and react with the hydrogen chloride before it is transferred to the separation device, thereby efficiently capturing and removing the hydrogen chloride component, significantly reducing the residual amount of hydrogen chloride inside the device, effectively preventing corrosion caused by hydrogen chloride, and ensuring the long-term stable operation of the hydrogenation test device and the overall safety performance of the equipment.

[0038] The hydrogenation test device provided by the utility model not only realizes the efficient progress of the hydrogenation reaction, but also significantly improves the corrosion resistance and service life of the equipment through the innovative dechlorination process design, which is conducive to obtaining more reliable and safe data results in the hydrogenation experimental research on the treatment of chlorine-containing compounds.

[0039] In some embodiments of the present invention, the hydrogenation reaction device includes a hydrogenation pretreatment reactor 4 and a hydrogenation main reactor 6; the inlet of the hydrogenation pretreatment reactor 4 is connected to the hydrogenation mixing pipeline, the outlet of the hydrogenation pretreatment reactor 4 is connected to the inlet of the hydrogenation main reactor 6, and the outlet of the hydrogenation main reactor 6 is connected to the separation device.

[0040] In order to optimize the hydrogenation reaction process and improve the overall efficiency, the hydrogenation reaction unit is cleverly divided into two continuously operated sub-parts: the hydrogenation pretreatment reactor 4 and the hydrogenation main reactor 6. The hydrogenation pretreatment reactor 4 is located at the initial stage of the entire process, and its inlet is directly connected to the hydrogenation mixing pipeline to receive a precisely proportioned mixture of feedstock oil and hydrogen. In the pretreatment reactor, the feedstock first undergoes a preliminary hydrogenation treatment step, the goal of which is to remove macromolecular sulfides, nitrides and other harmful impurities in the feedstock, while carrying out a certain degree of saturation reaction to reduce the pressure and load of the subsequent main reactor. After the pretreatment is completed, the reaction material flows out from the outlet of the hydrogenation pretreatment reactor 4 and is seamlessly connected to the inlet of the hydrogenation main reactor 6 through a specially designed pipeline. As the core component of the device, the hydrogenation main reactor 6 undertakes the key deep hydrogenation conversion task. Under the action of specific temperature, pressure and catalyst, it further promotes the complete conversion of unsaturated hydrocarbons and other unstable components in the feedstock into higher quality products. Finally, the mixed fluid after thorough reaction in the hydrogenation main reactor 6 will flow out of its outlet and directly connected to the separation device for effective gas-liquid separation, purification and product collection of the product. This layout ensures the safety and efficiency of the entire hydrogenation test device, while also extending the service life of the equipment and reducing maintenance costs.

[0041] In some embodiments of the utility model, the hydrogenation test device further includes a second liquid dechlorination tank 5, which is arranged between the outlet of the hydrogenation pretreatment reactor 4 and the inlet of the hydrogenation main reactor 6. Considering that a certain amount of hydrogen chloride by-products may be produced in the hydrogenation pretreatment reaction stage, in order to more effectively control and reduce the impact of hydrogen chloride on the hydrogenation main reactor 6 and its subsequent equipment, a second liquid dechlorination tank 5 is specially added. This additional dechlorination link is arranged between the outlet of the hydrogenation pretreatment reactor 4 and the inlet of the hydrogenation main reactor 6, forming a more targeted hydrogen chloride interception and processing module. During operation, the material coming out of the hydrogenation pretreatment reactor 4, in which the hydrogen chloride that may be entrained, will first be guided to the second liquid dechlorination tank 5. A dechlorinating agent is filled in this tank body, which can quickly and fully react with hydrogen chloride under mild conditions, thereby removing it from the material flow. In this way, the material entering the hydrogenation main reactor 6 will greatly reduce the hydrogen chloride content, which helps to maintain the activity of the catalyst in the main reactor and the integrity of the equipment materials, thereby improving the safety performance and operation efficiency of the entire hydrogenation test device. In addition, by adding the second liquid dechlorination tank 5, double dechlorination can be formed with the first liquid dechlorination tank 7, so that the hydrogen chloride content in the material is lower, thereby achieving a better protection effect.

[0042] In some embodiments of the present utility model, the separation device includes a high-pressure separator 8 and a low-pressure separator 9;

[0043] The inlet of the high-pressure separator 8 is connected to the separation device, and the liquid outlet of the high-pressure separator 8 is connected to the inlet of the low-pressure separator 9. The low-pressure separator 9 is provided with a gas product outlet 12 and a liquid product outlet 13. The gas product outlet 12 outputs a gas product, and the liquid product outlet 13 outputs a liquid product.

[0044] The separation device is designed as a two-stage separation structure, including two key components: a high-pressure separator 8 and a low-pressure separator 9. This hierarchical separation system is designed to more finely process the mixed products after the hydrogenation reaction to ensure that the product quality and recovery rate are maximized.

[0045] The high-pressure separator 8 is installed at the upstream position of the separation device, and its inlet directly receives the high-temperature and high-pressure mixed flow from the hydrogenation main reactor 6 or other related processing units. With its special internal structure and design, the high-pressure separator 8 can efficiently achieve preliminary gas-liquid separation operations by utilizing the physical properties of the materials and the pressure drop changes. The liquid product treated by the high-pressure separator 8 will be guided to the downstream low-pressure separator 9 through its liquid outlet.

[0046] The low-pressure separator 9 is used as the second-stage separation unit, and its inlet is connected to the liquid outlet of the high-pressure separator 8, so as to further separate the preliminarily separated liquid in detail to extract more tiny droplets and light components dissolved in the gas phase. One of the outlets of the low-pressure separator 9 is used as a gas product outlet 12 to discharge highly purified gas products, and the other outlet is used as a liquid product outlet 13 to discharge liquid products.

[0047] As for the high-pressure separator 8 itself, the liquid product discharged from its liquid outlet is transported to other processing facilities or storage containers through pipelines. This part of the liquid is mainly heavy hydrocarbons and possible impurities such as water, which need to be further processed to obtain high-quality final liquid products. Such a two-stage separation design not only ensures the quality of gas and liquid products, but also improves the comprehensive utilization rate of resources.

[0048] In some embodiments of the present invention, the hydrogenation test device further includes a compressor 11, the air inlet of the compressor 11 is connected to the gas outlet of the high-pressure separator 8 through a pipeline, and the air outlet of the compressor 11 is connected to the hydrogenation mixing pipeline.

[0049] In this embodiment, in order to achieve effective recycling of hydrogen and save energy, a compressor 11 is specially introduced. The air inlet of the compressor 11 is closely connected to the gas outlet of the high-pressure separator 8 through a pipeline system. In this way, after the hydrogenation reaction, the hydrogen-rich gas product released by the high-pressure separator 8 can be directly introduced into the compressor 11 for compression treatment.

[0050] The compressor 11 increases the pressure and density of the hydrogen to meet the conditions required for the hydrogenation reaction again. The outlet of the compressor 11 is then connected to the hydrogenation mixing pipeline, and the compressed hydrogen is returned to the mixing pipeline to be remixed with the new feedstock oil, thereby forming a closed hydrogen recycling system.

[0051] This design not only greatly reduces the demand for external hydrogen supply and reduces production costs, but is also beneficial to environmental protection, in line with the concept of sustainable development, and reflects the technical innovation of the utility model in resource utilization and energy saving. In this way, hydrogen is fully recycled in the hydrogenation test device, improving the overall operating efficiency and economic benefits of the device.

[0052] In some embodiments of the present invention, the hydrogenation test device further includes a gas dechlorination tank 10, which is disposed between the air inlet of the compressor 11 and the gas outlet of the high-pressure separator 8. The purpose of adding the gas dechlorination tank 10 is to remove the hydrogen chloride impurities that may remain in the hydrogen.

[0053] The gas dechlorination tank 10 is arranged between the air inlet of the compressor 11 and the gas outlet of the high-pressure separator 8, and constitutes an important purification link in the hydrogen recovery and utilization path. After the hydrogen is separated from the high-pressure separator 8, it will first pass through the gas dechlorination tank 10 before entering the compressor 11. Inside the dechlorination tank, the hydrogen comes into contact with the dechlorination medium, and the hydrogen chloride gas that may exist therein is effectively captured and removed by chemical adsorption or reaction, thereby improving the purity of the recycled hydrogen, reducing the potential adverse effects on the subsequent hydrogenation reaction, and protecting the compressor 11 from hydrogen chloride corrosion, thereby extending the service life and safety of the entire device.

[0054] In some embodiments of the utility model, the hydrogenation mixing pipeline includes a raw oil supply pipeline 1, a hydrogen supply pipeline 2 and a mixing pipeline 3, one end of the raw oil supply pipeline 1 and one end of the hydrogen supply pipeline 2 are respectively connected to the first end of the mixing pipeline 3, and the second end of the mixing pipeline 3 is connected to the hydrogenation reaction device. The raw oil supply pipeline 1 is responsible for smoothly and accurately transporting the raw oil to be processed from the storage facility or other supply source to the mixing pipeline 3. The hydrogen supply pipeline 2 provides pure and quantitative hydrogen, which is also connected to the mixing pipeline 3. One end of the raw oil supply pipeline 1 and one end of the hydrogen supply pipeline 2 are connected to the first end of the mixing pipeline 3 to achieve the intersection of the two fluids. The mixing pipeline 3 plays the role of fusing the two fluids, and its design purpose is to ensure that the raw oil and hydrogen can be evenly and fully mixed before entering the hydrogenation reaction device. The second end of the mixing pipeline 3 is directly connected to the hydrogenation reaction device, so that the pre-adjusted mixed oil and gas can be smoothly input into the reactor, and the predetermined hydrogenation reaction is carried out under the action of the catalyst.

[0055] This setting simplifies the operational complexity of the mixing process and ensures the controllability and stability of the hydrogenation reaction process, which is of great significance for improving the overall efficiency of the hydrogenation test device and the quality of the reaction products.

[0056] Optionally, the air outlet of the compressor 11 is connected to the hydrogen supply pipeline 2. Taking into account the concept of efficient utilization and recycling of hydrogen resources, the air outlet of the compressor 11 is designed to be directly connected to the hydrogen supply pipeline 2. This means that during the operation of the hydrogenation test device, the hydrogen separated by the high-pressure separator 8 is not directly discharged after being pressurized by the compressor 11, but is re-injected into the hydrogen supply pipeline 2. Such a design arrangement allows the hydrogen that is not completely reacted during the hydrogenation reaction or is recovered during the separation process to be returned to the circulation system and participate in the hydrogenation reaction of the crude oil again, thereby greatly reducing the hydrogen consumption and improving the economy and environmental protection performance of the device. In this way, the utility model realizes the closed-loop management and efficient utilization of hydrogen resources, and improves the overall efficiency and sustainability of the hydrogenation test device.

[0057] In different embodiments of the present invention, in response to the hydrogen chloride corrosion challenge faced by the hydrogenation test device, two different corrosion resistance strategies are adopted to protect the piping system inside the device.

[0058] On the one hand, a feasible method is to directly use materials resistant to hydrogen chloride corrosion to manufacture the pipes in the entire hydrogenation test device. Such materials usually have excellent acid resistance, especially excellent resistance to hydrogen chloride corrosion, and can maintain stable mechanical properties and structural integrity in long-term exposure to hydrogen chloride environment, thereby significantly extending the service life of the pipes and ensuring the normal operation and safety and reliability of the device.

[0059] On the other hand, as a supplement or alternative, a lining or inner coating of a material resistant to hydrogen chloride corrosion can also be provided on the inner wall of the existing pipeline of the hydrogenation test device. Such lining or coating uses a material resistant to hydrogen chloride corrosion, which is attached to the inside of the pipeline by precision coating or pasting, thereby forming an effective isolation barrier to prevent direct contact between hydrogen chloride and the pipeline substrate, greatly reducing the occurrence of corrosion. This design can improve the corrosion resistance of the pipeline system without changing the original pipeline material, and has the advantages of simple modification and controllable cost.

[0060] The hydrogen chloride corrosion-resistant materials used in the above-mentioned hydrogenation test device may include but are not limited to the following:

[0061] 1. Monel Alloy, a nickel-copper alloy, is known for its excellent corrosion resistance, especially for hydrogen chloride, hydrochloric acid and marine environment.

[0062] 2. Hastelloy, especially Hastelloy C series alloys (such as C276, C22, etc.), which perform well in various extreme corrosive environments, including extremely high corrosion resistance to hydrogen chloride and oxidizing media.

[0063] 3. High silicon cast iron or alloy, cast iron or alloy materials containing a higher proportion of silicon, can effectively resist hydrogen chloride corrosion.

[0064] 4. Lining materials, such as enamel (Enamel), polytetrafluoroethylene (PTFE), glass flake (Glass Flake), ceramic composite materials, etc., these materials can be used as pipeline linings to provide a good corrosion-resistant barrier.

[0065] 5. Special engineering plastics, such as PVDF (polyvinylidene fluoride), have excellent chemical corrosion resistance and can be used for pipeline applications in hydrogen chloride environments.

[0066] 6. Coating materials, such as KN22 hydrogen chloride resistant anti-corrosion coating, are specially developed to solve the problem of hydrogen chloride corrosion and can form a solid protective layer on the metal surface.

[0067] The specific material to be used can be comprehensively considered based on factors such as actual working conditions, cost budget and performance requirements.

[0068] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.

Claims

1. A hydrogenation test device, characterized in that: It includes a hydrogenation mixing pipeline, a hydrogenation reaction device, a separation device and a first liquid dechlorination tank; The inlet of the hydrogenation reaction device is connected to the hydrogenation mixing pipeline through a pipeline, and the outlet of the hydrogenation reaction device is connected to the separation device through a pipeline; The pipeline between the hydrogenation reaction device and the separation device is provided with the first liquid dechlorination tank.

2. The hydrogenation test device according to claim 1, characterized in that: The hydrogenation reaction device comprises a hydrogenation pretreatment reactor and a hydrogenation main reactor; The inlet of the hydrogenation pretreatment reactor is connected to the hydrogenation mixing pipeline, the outlet of the hydrogenation pretreatment reactor is connected to the inlet of the hydrogenation main reactor, and the outlet of the hydrogenation main reactor is connected to the separation device.

3. The hydrogenation test device according to claim 2, characterized in that: Also includes: A second liquid dechlorination tank is disposed between the outlet of the hydrogenation pretreatment reactor and the inlet of the hydrogenation main reactor.

4. The hydrogenation test device according to any one of claims 1 to 3, characterized in that: The separation device comprises a high-pressure separator and a low-pressure separator; The inlet of the high-pressure separator is connected to the separation device, the liquid outlet of the high-pressure separator is connected to the inlet of the low-pressure separator, and the low-pressure separator is provided with a gas product outlet and a liquid product outlet.

5. The hydrogenation test device according to claim 4, characterized in that: Also includes: A compressor, wherein the air inlet of the compressor is connected to the gas outlet of the high-pressure separator through a pipeline, and the air outlet of the compressor is connected to the hydrogenation mixing pipeline.

6. The hydrogenation test device according to claim 5, characterized in that: Also includes: The gas dechlorination tank is arranged between the air inlet of the compressor and the gas outlet of the high-pressure separator.

7. The hydrogenation test device according to claim 5 or 6, characterized in that: The hydrogenation mixing pipeline includes a raw oil supply pipeline, a hydrogen supply pipeline and a mixing pipeline, one end of the raw oil supply pipeline and one end of the hydrogen supply pipeline are respectively connected to the first end of the mixing pipeline, and the second end of the mixing pipeline is connected to the hydrogenation reaction device.

8. The hydrogenation test device according to claim 7, characterized in that: The gas outlet of the compressor is in communication with the hydrogen supply pipeline.

9. The hydrogenation test device according to claim 1, characterized in that: The pipes in the hydrogenation test device are made of materials resistant to hydrogen chloride corrosion.

10. The hydrogenation test device according to claim 1, characterized in that: The pipeline in the hydrogenation test device is provided with an inner lining or inner coating of a material resistant to hydrogen chloride corrosion.

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