Catalyst performance evaluation system
By using heating components and gas online analysis units in the catalyst performance evaluation system, the rapid and accurate evaluation of the catalyst performance is achieved, and the problems of cumbersome and high cost in the prior art are solved.
Patent Information
- Application Number
- CN202420967955.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-07
- Publication Date
- 2025-02-18
- Estimated Expiration
- 2034-05-07
AI Technical Summary
When evaluating the performance of the catalyst, existing catalyst evaluation systems need to separate and independently detect gas and liquid products, resulting in cumbersome evaluation process and high operating costs.
A catalyst performance evaluation system was designed to maintain the gaseous state of the reactor product by heating the assembly, and the gas online analysis unit was used to simultaneously determine the types and yields of gas and liquid products, eliminating the separation and liquid product identification process.
The catalyst performance evaluation process is simplified, the operation is simple, the operation costs are reduced, and the accuracy of the detection results is improved.
Smart Images
Figure CN222506228U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of catalyst evaluation, in particular to a catalyst performance evaluation system. Background Art
[0002] Catalysts are widely used in many fields such as chemical industry, energy, and environmental protection industry. The performance of catalysts is a key factor restricting the stability of industrial production and operating costs. It is very necessary to evaluate the activity, selectivity, stability and other properties of catalysts before and during the use of catalysts.
[0003] In the prior art, a catalyst evaluation system is used to detect the reaction products of a catalytic reaction to evaluate the performance of the catalyst. However, the reaction products include gas phase products and liquid phase products. When evaluating the reaction products, the existing catalyst evaluation system needs to separate the gas phase products and the liquid phase products, and then detect the gas phase products and the liquid phase products respectively, which makes the evaluation process more complicated and the operating cost is high, or the liquid phase products cannot be collected after the product detection is completed. Utility Model Content
[0004] The utility model provides a catalyst performance evaluation system to solve the defects of the prior art that the catalyst performance evaluation process is relatively complicated and the operating cost is relatively high.
[0005] The utility model provides a catalyst performance evaluation system, comprising:
[0006] Feed assembly;
[0007] A reaction unit, comprising a reactor and a monitoring system, wherein the inlet of the reactor is connected to the feed assembly, and the monitoring system is arranged in the reactor, and the monitoring system is used to monitor the pressure and temperature of the reactor;
[0008] A gas online analysis unit is connected to the product outlet of the reactor through a heating component, the heating component is used to keep the catalytic products at the product outlet of the reactor in a gaseous state to the gas online analysis unit, and the gas online analysis unit is used to identify the type and output of the catalytic products.
[0009] According to an embodiment of the utility model, a catalyst performance evaluation system is provided, wherein the heating component comprises:
[0010] A delivery pipeline connected between the product outlet of the reactor and the gas online analysis unit;
[0011] A heating element is wound around the conveying pipeline.
[0012] According to an embodiment of the utility model, a catalyst performance evaluation system is provided, which also includes a gas-liquid separation unit connected to the gas online analysis unit.
[0013] According to an embodiment of the utility model, a catalyst performance evaluation system is provided, which also includes a four-way valve, wherein the reaction unit and the gas-liquid separation unit are both two, the two reaction units are respectively connected to the first external connection port and the third external connection port of the four-way valve, and the two gas-liquid separation units are respectively connected to the second external connection port and the fourth external connection port of the four-way valve through the gas online analysis unit;
[0014] The four-way valve is suitable for switching between a first working state and a second working state, in which one of the reaction units, the first external connection port, the second external connection port, the gas online analysis unit and one of the gas-liquid separation units are connected;
[0015] In the second working state, another of the reaction units, the third external connection port, the fourth external connection port, the gas online analysis unit and another gas-liquid separation unit are connected.
[0016] According to an embodiment of the utility model, a catalyst performance evaluation system is provided, wherein the gas-liquid separation unit comprises:
[0017] A condenser connected to the gas online analysis unit;
[0018] The liquid product collector is connected to the condenser.
[0019] According to an embodiment of the utility model, a catalyst performance evaluation system is provided, wherein the gas-liquid separation unit further comprises a wet flow meter connected to the rear end of the liquid phase product collector.
[0020] According to an embodiment of the utility model, a catalyst performance evaluation system is provided, wherein the feed assembly comprises a feed pipeline and a first pressure measuring element and / or a flow measuring element arranged on the feed pipeline, and the feed pipeline is connected to the inlet of the reactor.
[0021] According to an embodiment of the utility model, a catalyst performance evaluation system is provided. The monitoring system includes a temperature measuring element and a second pressure measuring element arranged in the reactor.
[0022] According to an embodiment of the utility model, a catalyst performance evaluation system is provided, wherein the gas online analysis unit comprises a gas chromatograph.
[0023] According to an embodiment of the utility model, a catalyst performance evaluation system is provided, wherein a high-temperature back-pressure valve is provided between the reactor and the gas online analysis unit;
[0024] The product outlet end of the reactor is also provided with a first needle valve and / or a first stop valve.
[0025] The catalyst performance evaluation system provided by the embodiment of the utility model is that the reactants entering the reactor through the feed component undergo a catalytic reaction with the catalyst in the reactor, and the catalytic products transported to the gas online analysis unit from the reactor product outlet are maintained in a gaseous state through the heating component, so that the types and outputs of the catalytic products including gas phase products and liquid phase products can be identified through the gas online analysis unit to achieve performance evaluation of the catalyst. Compared with the separate and independent identification of gas phase products and liquid phase products, the separation and liquid phase product identification processes are omitted, thereby simplifying the operation and reducing the operating costs. BRIEF DESCRIPTION OF THE DRAWINGS
[0026] In order to more clearly illustrate the technical solutions in the present invention or the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. 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 any creative work.
[0027] Figure 1 It is a structural schematic diagram of a catalyst performance evaluation system provided in an embodiment of the utility model.
[0028] Reference numerals:
[0029] 1. Feed assembly; 11. Feed pipeline; 12. First pressure measuring element; 13. Flow measuring element; 14. First filter; 15. Pressure reducing valve; 16. Second stop valve; 17. Check valve;
[0030] 2. Reactor; 21. Temperature measuring element; 22. High temperature back pressure valve; 23. First needle valve; 24. First stop valve; 25. Second pressure measuring element; 26. Second filter;
[0031] 3. Temperature controller;
[0032] 4. Gas online analysis unit;
[0033] 5. Gas-liquid separation unit; 51. Condenser; 52. Liquid product collector; 53. Wet flow meter; 54. Second needle valve;
[0034] 6. Four-way valve;
[0035] 7. Heating component;
[0036] 8. Reaction components. DETAILED DESCRIPTION
[0037] 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.
[0038] 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.
[0039] 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.
[0040] 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.
[0041] 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.
[0042] The embodiment of the utility model provides a catalyst performance evaluation system. Figure 1 The schematic diagram of the structure of the catalyst performance evaluation system provided by the embodiment of the utility model is illustrated as follows: Figure 1 As shown, the catalyst performance evaluation system includes a feed assembly 1, a reaction unit and a gas online analysis unit 4 which are connected in sequence.
[0043] Among them, the reaction unit includes a reactor 2 and a monitoring system, the inlet of the reactor 2 is connected to the feed component 1, the monitoring system is arranged in the reactor 2, and the monitoring system is used to monitor the pressure and temperature of the reactor 2; the gas online analysis unit 4 is connected to the product outlet end of the reactor 2 through the heating component 7, the heating component 7 is used to make the catalytic product at the product outlet end of the reactor 2 maintain a gaseous state to the gas online analysis unit 4, and the gas online analysis unit 4 is used to determine the type and output of the catalytic product.
[0044] It can be understood that when evaluating the catalyst, a reducing medium is first introduced into the reactor 2 to perform oxidation-reduction of the catalyst, and then the reactor 2 is heated to raise its temperature so that the reactor 2 is in a high-temperature and high-pressure environment. When the reactor 2 reaches the high-temperature and high-pressure conditions required for the catalytic reaction, the reactants enter the reactor 2 through the feed component 1, and the reactants undergo mass transfer and catalytic reactions on the catalyst surface in the reactor 2 to convert the reactants into catalytic products. Under the action of the heating component 7, the catalytic products from the product outlet of the reactor 2 to the gas online analysis unit 4 are maintained in a gaseous state, so that all catalytic products obtained by the catalytic reaction enter the gas online analysis unit 4 in a gaseous form, and the gas online analysis unit 4 can realize the discrimination of the types and yields of the catalytic products, that is, the simultaneous discrimination of gas phase products and liquid phase products, so as to realize the evaluation of the catalyst performance.
[0045] The catalyst performance evaluation system provided by the embodiment of the utility model is that the reactants entering the reactor 2 through the feed component 1 undergo a catalytic reaction with the catalyst in the reactor 2, and the catalytic products transported from the product outlet of the reactor 2 to the gas online analysis unit 4 are maintained in a gaseous state through the heating component 7, so that the types and outputs of the catalytic products including gas phase products and liquid phase products are distinguished through the gas online analysis unit 4 to achieve performance evaluation of the catalyst. Compared with the separate and independent distinction of the gas phase products and the liquid phase products, the separation and liquid phase product distinction processes are omitted, thereby simplifying the operation and reducing the operating costs.
[0046] In one embodiment of the present invention, the heating assembly 7 includes a delivery pipeline and a heating element, the delivery pipeline is connected between the product outlet of the reactor 2 and the gas online analysis unit 4, and the heating element is wound around the delivery pipeline. For example, the heating element can be a heating belt evenly wound around the delivery pipeline to ensure the stability of the temperature of the catalytic product in the delivery pipeline.
[0047] It should be noted that the transport pipeline can use an insulation pipe to insulate the high-temperature catalytic product to prevent the gaseous catalytic product from liquefying part of the gaseous liquid product into liquid liquid product due to heat dissipation during the transport process, thereby affecting the accuracy of the evaluation results.
[0048] In one embodiment of the present invention, the feed assembly 1 includes a feed pipeline 11, the outlet end of the feed pipeline 11 is connected to the inlet of the reactor 2, and a first pressure measuring element 12 is provided on the feed pipeline 11, and the first pressure measuring element 12 is used to detect the delivery pressure of the reactant. Furthermore, a flow measuring element 13 is also provided on the feed pipeline 11, and the flow measuring element 13 is used to detect the flow rate of the reactant.
[0049] It is understandable that the reactant may be one reaction component 8 or may include multiple reaction components 8. In this embodiment, the number of feed pipelines 11 is designed to be multiple to achieve the delivery of multiple reaction components 8, and each feed pipeline 11 is provided with a first pressure measuring element 12 and a flow measuring element 13 to detect the pressure and flow of the reaction component 8. It should be noted here that the reaction component 8 may be a liquid reactant or a gaseous reactant.
[0050] For example, the feed assembly 1 includes three feed pipelines 11 , the inlet ends of the three feed pipelines 11 are respectively connected to the three reaction components 8 , and the outlet ends of the three feed pipelines 11 are firstly combined into one and then connected to the inlet of the reactor 2 .
[0051] Further, each feed pipeline 11 is provided with a ball valve, and the ball valve is used to control the on and off of the feed pipeline 11 to achieve the delivery of one or more reaction components 8. It should be noted here that when the number of reaction components 8 is less than the number of feed pipelines 11, part of the feed pipelines 11 can be closed by controlling the ball valve to make the remaining feed pipelines 11 conductive, and the number of conductive feed pipelines 11 corresponds to the number of reaction components 8, so that different numbers of reaction components 8 can be delivered to achieve catalyst performance evaluation under different conditions, thereby improving the versatility of the system.
[0052] In one embodiment of the utility model, a first filter 14 is also provided on the feed pipeline 11, and the first filter 14 is close to the inlet end of the feed pipeline 11, and the first filter 14 is used to filter the reaction components 8 to prevent impurities from entering the reactor 2 and affecting the evaluation results.
[0053] The feed pipeline 11 is also provided with a second stop valve 16 connected in parallel to the flow measurement element 13 , and the second stop valve 16 is used for adjusting flow and throttling.
[0054] The feed pipeline 11 is also provided with a one-way valve 17 located at the outlet side of the flow measurement element 13 . The one-way valve 17 is used to control the flow direction of the reaction component 8 toward the reactor 2 to prevent the reaction component 8 from flowing in the reverse direction.
[0055] The feed pipeline 11 is also provided with a pressure reducing valve 15 , which is used to adjust the flow rate of the reaction component 8 in the feed pipeline 11 .
[0056] For example, the inlet end of the feed pipeline 11 is connected to the reaction component 8, and the first filter 14, the pressure reducing valve 15, the flow measuring element 13 and the one-way valve 17 are sequentially arranged on the feed pipeline 11 from the inlet end to the outlet end. The feed pipeline 11 is also provided with a second stop valve 16 and two first pressure measuring elements 12, and the two ends of the second stop valve 16 are respectively connected to the two ends of the flow measuring element 13, and the two first pressure measuring elements 12 are respectively located on both sides of the pressure reducing valve 15. The feed pipeline 11 is also provided with a ball valve, and the inlet end of the flow measuring element 13, the outlet end of the flow measuring element 13 and the outlet end of the first filter 14 are all provided with ball valves.
[0057] For example, when there are multiple feed pipelines 11, the feed assembly 1 also includes a converging pipeline, the inlet ends of the multiple feed pipelines 11 are respectively connected to the multiple reaction components 8, the outlet ends of the multiple feed pipelines 11 are connected to the inlet end of the converging pipeline, the outlet end of the converging pipeline is connected to the inlet of the reactor 2, and the multiple reaction components 8 are mixed in the converging pipeline.
[0058] It should be noted here that multiple reaction components 8 are independently transmitted through multiple feed pipelines 11, and the flow of the corresponding reaction components 8 is adjusted by the second stop valve 16 and the pressure reducing valve 15 on each feed pipeline 11, and the flow and pressure are detected in real time by the flow measuring element 13 and the first pressure measuring element 12 to achieve accurate delivery of the reaction components 8.
[0059] In one embodiment of the present invention, the monitoring system includes a temperature measuring element 21 and a second pressure measuring element 25 disposed in the reactor 2 .
[0060] It is understandable that the reactor 2 has a heating function to provide a high temperature and high pressure environment for the catalytic reaction, the temperature in the reactor 2 is monitored by the temperature measuring element 21, and the pressure in the reactor 2 is monitored by the second pressure measuring element 25. In this embodiment, the inner wall of the reactor 2 has a silicon-molybdenum rod, the inner cavity of the reactor 2 is heated by the silicon-molybdenum rod, and an insulation layer is provided on the wall of the reactor 2. In other embodiments, the reactor 2 adopts a heating furnace, the heating furnace adopts a multi-stage heating circuit, the heating furnace adopts an electric heating furnace, and the temperature of the catalyst bed is controlled by the temperature feedback from the thermocouple; a temperature controller 3 can also be provided on the outer wall of the reactor 2 to achieve temperature control of the reactor 2.
[0061] In one embodiment of the utility model, a high-temperature back-pressure valve 22 is provided on the delivery pipeline between the reactor 2 and the gas online analysis unit 4. The high-temperature back-pressure valve 22 can prevent the backflow of the catalytic product, thereby protecting the safe operation of the system, and the high-temperature back-pressure valve 22 can also adjust the flow and pressure of the catalytic product; a second filter 26 is also provided on the delivery pipeline close to the reactor 2 side.
[0062] Furthermore, the product outlet of the reactor 2 is also provided with a first stop valve 24 and a first needle valve 23 which are arranged in sequence, for adjusting the pressure and flow of the catalytic product.
[0063] In one embodiment of the present invention, the gas online analysis unit 4 is a gas chromatograph (GC).
[0064] It can be understood that the catalytic products of the catalytic reaction in reactor 2 enter the gas chromatograph, and the gas chromatograph evaluates and detects the types and proportions of the catalytic products to evaluate the catalyst performance.
[0065] For example, the delivery pipeline between the gas chromatograph and the product outlet of the reactor 2 is heated and insulated by a heating element to achieve the insulation of the high-temperature catalytic product, so as to avoid the gaseous liquid phase product being liquefied into a liquid liquid phase product due to heat dissipation during the delivery process, thereby affecting the accuracy of the evaluation result. In other embodiments, the outer wall of the delivery pipeline can be coated with an insulating material.
[0066] In one embodiment of the present invention, the catalyst performance evaluation system further includes a gas-liquid separation unit 5 , and the gas-liquid separation unit 5 is connected to a gas chromatograph.
[0067] It is understandable that the gas chromatograph detects the high-temperature gaseous catalytic products, and the detected catalytic products are separated by the gas-liquid separation unit 5 to separate and collect the liquid products.
[0068] It should be noted that in the prior art, when evaluating the performance of a catalyst, the liquid phase product and the gas phase product of the catalytic product must first be separated, and the liquid phase product is obtained after separation and tested. The liquid phase product is the final liquid product of the entire catalytic reaction, and there is gasification of part of the liquid phase product, so there is a liquid dead volume, which makes the accuracy of the evaluation result low. The catalytic product of the utility model directly enters the gas chromatograph, which can realize the simultaneous online real-time detection of the liquid phase product and the gas phase product, which can improve the accuracy of the test result, and collect the liquid phase product after the detection.
[0069] In one embodiment of the present invention, the gas-liquid separation unit 5 includes a condenser 51 and a liquid product collector 52 . The condenser 51 is connected to the gas online analysis unit 4 , and the liquid product collector 52 is connected to the condenser 51 .
[0070] It can be understood that the condenser 51 is connected to the output of the gas chromatograph, and the catalytic product enters the condenser 51 after being detected by the gas chromatograph. The condenser 51 separates the gas phase product and the liquid phase product, and the separated liquid phase product is collected in the liquid phase product collector 52.
[0071] The catalyst performance evaluation system provided in the embodiment of the utility model, after online analysis of the catalyst, is equipped with a condenser to separate and collect the liquid phase product, thereby realizing one-step precise detection of the content of the entire product and separation and collection of the liquid phase product.
[0072] In this embodiment, the condenser 51 is disposed on the upper part of the liquid product collector 52, so that the inner cavity of the liquid product collector 52 is connected to the condenser 51, and the liquid product separated by the condenser 51 drips into the liquid product collector 52, and a second needle valve can also be provided at the outlet of the condenser 51. In other embodiments, the liquid product collector 52 can also be connected to the liquid output of the condenser 51 through a pipeline.
[0073] Furthermore, the gas-liquid separation unit 5 also includes a wet flow meter 53 connected to the rear end of the liquid phase product collector 52. The wet flow meter 53 is used to obtain the flow of the catalytic product, and then obtain the volume of the catalytic product to calculate the volume change before and after the reaction. Of course, a volume measurement element can also be set in the liquid phase product collector 52 to obtain the volume of the catalytic product.
[0074] In a specific embodiment of the present invention, the catalyst performance evaluation system performs catalytic conversion of carbon dioxide, first reducing the catalyst, then heating the reactor 2 to achieve the required high temperature and high pressure environment, and then the three reaction components 8 enter the reactor 2 through the three-way feed line 11, and the reactants undergo mass transfer and catalytic reaction on the catalyst surface to convert the reactants into gaseous catalytic products. The heating component 7 allows all the catalytic products obtained after the catalytic reaction to enter the gas chromatograph for evaluation of the type and proportion of the catalytic products. After the evaluation, they enter the condenser 51 to separate the gaseous products from the liquid products, and the liquid products are collected through the liquid product collector 52.
[0075] In a preferred embodiment of the present invention, it also includes a four-way valve 6, two reaction units and two gas-liquid separation units 5, the two reaction units are respectively connected to the first external connection port and the third external connection port of the four-way valve 6, and the two gas-liquid separation units 5 are respectively connected to the second external connection port and the fourth external connection port of the four-way valve 6 through the gas online analysis unit 4.
[0076] For example, the two reaction units are respectively a first reaction unit and a second reaction unit, the first reaction unit is connected to the first external connection port of the four-way valve 6 , and the second reaction unit is connected to the third external connection port of the four-way valve 6 .
[0077] The two gas-liquid separation units 5 are respectively the first gas-liquid separation unit and the second gas-liquid separation unit. The first gas-liquid separation unit is connected to the gas online analysis unit 4, the gas online analysis unit 4 is connected to the second external connection port of the four-way valve 6, and the second gas-liquid separation unit is connected to the fourth external connection port of the four-way valve 6.
[0078] The four-way valve 6 has two working states, namely a first working state and a second working state. The four-way valve 6 is suitable for switching between the first working state and the second working state.
[0079] The four-way valve 6 is in the first working state, the first external connection port and the second external connection port are connected, and the third external connection port and the fourth external connection port are disconnected, then the first reaction unit, the first external connection port of the four-way valve 6, the second external connection port of the four-way valve 6, the gas online analysis unit 4 and the first gas-liquid separation unit are connected in sequence. At this time, the first reaction unit, the gas online analysis unit 4 and the first gas-liquid separation unit are connected, the first reaction unit is in the catalyst performance evaluation working state, and the second unit is in the catalyst performance evaluation non-working state.
[0080] The four-way valve 6 is in the second working state, the third external connection port and the second external connection port are connected, and the first external connection port and the fourth external connection port are disconnected, then the second reaction unit, the third external connection port of the four-way valve 6, the second external connection port of the four-way valve 6, the gas online analysis unit 4 and the second gas-liquid separation unit are connected in sequence. At this time, the second reaction unit, the gas online analysis unit 4 and the second gas-liquid separation unit are connected, the second reaction unit is in the catalyst performance evaluation working state, and the first reaction unit is in the catalyst performance evaluation non-working state.
[0081] It can be understood that by switching the four-way valve 6 between the first working state and the second working state, the first reaction unit and the second reaction unit can be evaluated for catalyst performance, thereby realizing dual-channel catalytic evaluation and improving evaluation efficiency.
[0082] It should be noted that when there are two reaction units, the feed assembly 1 delivers the reaction components 8 to the two reaction units respectively. In this embodiment, the feed assembly 1 includes multiple feed pipelines 11, each feed pipeline 11 includes a first pipeline and multiple second pipelines, the number of the second pipelines is equal to the number of the second reaction units, the inlet end of the first pipeline is connected to the corresponding reaction component 8, the inlet ends of the two second pipelines are connected to the outlet end of the first pipeline, and the outlet ends of the two second pipelines are connected to the inlets of the reactors 2 of the two reaction units one by one, the first filter 14 and the pressure reducing valve 15 are arranged on the first pipeline, the first filter 14, the pressure reducing valve 15 and the first pipeline form a total feed pipeline 11, the flow measuring element 13 and the one-way valve 17 are arranged on the second pipeline, the flow measuring element 13, the one-way valve 17 and the second pipeline form a feed branch pipeline, then the feed assembly 1 includes a total feed pipeline 11 and two feed branch pipelines, the total feed pipeline 11 is used to connect the reaction component 8, the inlet ends of the two feed branch pipelines are connected to the corresponding feed branch pipelines, and the outlet ends of the two feed branch pipelines are connected to the reactors 2 of the two reaction units one by one. In other embodiments, the feed assembly 1 may also be designed to be two independent ones, and the reaction components 8 are independently delivered to the two reaction units through the two feed assemblies 1 .
[0083] 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 catalyst performance evaluation system, characterized in that: include: Feed assembly (1); A reaction unit, comprising a reactor (2) and a monitoring system, wherein the inlet of the reactor (2) is connected to the feed assembly (1), and the monitoring system is arranged in the reactor (2), and the monitoring system is used to monitor the pressure and temperature of the reactor (2); A gas online analysis unit (4), the gas online analysis unit (4) is connected to the product outlet of the reactor (2) via a heating component (7), the heating component (7) is used to maintain the catalytic product at the product outlet of the reactor (2) in a gaseous state to the gas online analysis unit (4), and the gas online analysis unit (4) is used to identify the type and output of the catalytic product.
2. The catalyst performance evaluation system according to claim 1, characterized in that: The heating component (7) comprises: A delivery pipeline connected between the product outlet of the reactor (2) and the gas online analysis unit (4); A heating element is wound around the conveying pipeline.
3. The catalyst performance evaluation system according to claim 1, characterized in that: It also includes a gas-liquid separation unit (5) connected to the gas online analysis unit (4).
4. The catalyst performance evaluation system according to claim 3, characterized in that: It also comprises a four-way valve (6), the reaction unit and the gas-liquid separation unit (5) are both two, the two reaction units are respectively connected to the first external connection port and the third external connection port of the four-way valve (6), and the two gas-liquid separation units (5) are respectively connected to the second external connection port and the fourth external connection port of the four-way valve (6) through the gas online analysis unit (4); The four-way valve (6) is suitable for switching between a first working state and a second working state. In the first working state, one of the reaction units, the first external connection port, the second external connection port, the gas online analysis unit (4) and one of the gas-liquid separation units (5) are connected; In the second working state, another of the reaction units, the third external connection port, the fourth external connection port, the gas online analysis unit (4) and another gas-liquid separation unit (5) are connected.
5. The catalyst performance evaluation system according to claim 3, characterized in that: The gas-liquid separation unit (5) comprises: A condenser (51), connected to the gas online analysis unit (4); The liquid product collector (52) is connected to the condenser (51).
6. The catalyst performance evaluation system according to claim 5, characterized in that: The gas-liquid separation unit (5) further comprises a wet flow meter (53) connected to the rear end of the liquid phase product collector (52).
7. The catalyst performance evaluation system according to any one of claims 1 to 6, characterized in that: The feed assembly (1) comprises a feed pipeline (11) and a first pressure measuring element (12) and / or a flow measuring element (13) arranged on the feed pipeline (11); the feed pipeline (11) is connected to the inlet of the reactor (2).
8. The catalyst performance evaluation system according to any one of claims 1 to 6, characterized in that: The monitoring system comprises a temperature measuring element (21) and a second pressure measuring element (25) arranged in the reactor (2).
9. The catalyst performance evaluation system according to any one of claims 1 to 6, characterized in that: The gas online analysis unit (4) comprises a gas chromatograph.
10. The catalyst performance evaluation system according to any one of claims 1 to 6, characterized in that: A high-temperature back-pressure valve (22) is provided between the reactor (2) and the gas online analysis unit (4); The product outlet end of the reactor (2) is also provided with a first needle valve (23) and / or a first stop valve (24).