Compact gas-solid catalytic reaction activity evaluation device
By designing a compact gas-solid catalytic reaction activity evaluation device, using a CO gas sensor to replace the gas chromatography device, and integrating various parts into a metal casing, the problem of bulky and expensive existing equipment is solved, and the equipment is compact and Efficient catalyst activity evaluation.
Patent Information
- Application Number
- CN202420926588.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-29
- Publication Date
- 2025-01-21
- Estimated Expiration
- 2034-04-29
AI Technical Summary
The existing catalyst activity evaluation device is huge and expensive, not streamlined enough, and cannot be produced and promoted on a large scale. The assembly and put into use of new equipment will waste a lot of manpower and material resources.
A compact gas-solid catalytic reaction activity evaluation device is designed. By installing a CO gas sensor instead of a gas chromatography device, the main equipment for catalyst activity evaluation is integrated. The various parts are compactly integrated using a metal shell to simplify the structure and operation.
The equipment is made compact and beautiful, the cost is reduced, the operation is simplified, the service life of the equipment is extended, and the activity of the catalyst can be evaluated efficiently.
Smart Images
Figure CN222379667U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of catalysts, in particular to a compact gas-solid catalytic reaction activity evaluation device. Background Art
[0002] CO is a colorless, odorless, toxic gaseous pollutant produced by the incomplete combustion of fossil fuels, mainly from factory exhaust and automobile exhaust, causing environmental pollution. CO catalytic oxidation is an efficient and energy-saving CO purification method.
[0003] CO oxidation reaction is a typical heterogeneous catalytic reaction. As an important basic research, CO oxidation can be used as a probe reaction to study the structure of catalysts, adsorption and desorption phenomena, metal-support interactions and catalytic reaction mechanisms. Efficient catalysts are the core of this reaction. The development of highly active CO catalytic oxidation catalysts has always been a research hotspot. In laboratory research and development, a set of inexpensive and high-quality catalyst reaction activity evaluation equipment is very important for screening newly prepared catalysts and conducting subsequent research.
[0004] The catalyst activity evaluation devices currently widely used in experiments are generally composed of a fixed bed experimental reactor, a gas path control system, an online analysis and detection system, and a computer control system. Most of the existing devices have the problems of being bulky, expensive, and not streamlined enough, and cannot be mass-produced and promoted. The assembly and commissioning of new equipment will waste a lot of manpower and material resources. Therefore, it is necessary to provide a compact gas-solid catalytic reaction activity evaluation device to solve the above problems. Utility Model Content
[0005] In view of the deficiencies in the prior art, the utility model provides a compact gas-solid catalytic reaction activity evaluation device, which solves the problems mentioned in the above background.
[0006] The utility model provides the following technical solutions: a compact gas-solid catalytic reaction activity evaluation device, comprising a metal shell, three air intake pipes are arranged on the outside of the metal shell, a first valve control is arranged on each air intake pipe on the outside of the metal shell, a first mass flow meter is arranged on each air intake pipe and located on one side of the first valve control, the exhaust ends of the three air intake pipes pass through the side wall of the metal shell to connect to a main flow pipe, a gas mixing chamber is arranged at the gas delivery end of the main flow pipe, the exhaust port of the gas mixing chamber is connected to a gas delivery pipeline, a fixed bed reactor is connected inside the metal shell and at the gas delivery port of the gas delivery pipeline, the lower end interface of the fixed bed reactor is connected to a tail gas pipe, the lower end of the tail gas pipe extends through the metal shell to the outside, and is connected to a CO gas sensor.
[0007] Preferably, the three-way air intake pipeline includes a CO air intake pipeline, an O2 air intake pipeline and an Ar air intake pipeline, the O2 air intake pipeline is arranged between the CO air intake pipeline and the Ar air intake pipeline, and the air inlets of the CO air intake pipeline, the O2 air intake pipeline and the Ar air intake pipeline are respectively connected to corresponding gas cylinders.
[0008] Preferably, three of the first mass flow meters are provided, the three first mass flow meter bodies are all provided inside the metal shell, and the dials of the first mass flow meters are provided on the outer surface of the metal shell.
[0009] Preferably, a second valve control is provided on the gas pipeline arranged at the exhaust end of the gas mixing chamber, a pressure gauge is provided on the side of the second valve control on the gas pipeline away from the gas mixing chamber, and a second mass flow meter is provided between the second valve control and the pressure gauge on the gas pipeline.
[0010] Preferably, the valve knob of the second valve control, the dial of the second mass flow meter and the dial of the pressure gauge are all arranged on the outer surface of the metal shell through reserved holes opened on the metal shell.
[0011] Preferably, the metal shell at the fixed bed reactor can be opened, the metal shell and the fixed bed reactor are an integrated structure, the fixed bed reactor shell jacket is filled with quartz wool, a reaction tube is arranged in the center of the fixed bed reactor, the reaction tube is a quartz glass tube, the reaction tube is filled with a catalyst, and the reaction tube and at both ends of the catalyst are filled with quartz wool.
[0012] Preferably, a thermocouple in contact with the catalyst bed is inserted into the reaction tube, a temperature controller is provided at the upper end of one side of the fixed bed reactor, the temperature controller is electrically connected to the thermocouple through a wire, and the temperature controller panel is provided on the outer surface of the metal shell.
[0013] Compared with the prior art, the utility model has the following beneficial effects:
[0014] 1. This compact gas-solid catalytic reaction activity evaluation device replaces the gas chromatography device of the traditional catalyst reaction activity evaluation device with a gas sensor by setting a CO gas sensor, which greatly saves costs. The device integrates the main equipment for catalyst activity evaluation and does not need to purchase experimental equipment separately for assembly. The equipment is simple and easy to operate.
[0015] 2. This compact gas-solid catalytic reaction activity evaluation device has a metal shell, and each part is integrated in a closed metal shell. It has a more compact structure, a more beautiful appearance, a small size, and a small footprint. The metal shell has a stronger protective effect on the entire system, which greatly increases the service life of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 This is a schematic diagram of the working principle of the compact gas-solid catalytic reaction activity evaluation device of the utility model;
[0017] In the figure: 1. CO inlet pipeline; 2. O2 inlet pipeline; 3. Ar inlet pipeline; 4. First valve control; 401, second valve control; 5. First mass flow meter; 501, second mass flow meter; 6. Gas mixing chamber; 7. Pressure gauge; 8. Temperature controller; 9. Fixed bed reactor; 10. CO gas sensor; 11. Metal casing. DETAILED DESCRIPTION
[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0019] See also Figure 1 A compact gas-solid catalytic reaction activity evaluation device comprises a metal shell 11, three air intake pipes are arranged on the outside of the metal shell 11, a first valve control 4 is arranged on each air intake pipe on the outside of the metal shell 11, a first mass flow meter 5 is arranged on each air intake pipe and located on one side of the first valve control 4, the exhaust ends of the three air intake pipes pass through the side wall of the metal shell 11 to connect to the main flow pipe, a gas mixing chamber 6 is arranged at the gas delivery end of the main flow pipe, the exhaust port of the gas mixing chamber 6 is connected to the gas delivery pipeline, a fixed bed reactor 9 is connected inside the metal shell 11 and at the gas delivery port of the gas delivery pipeline, the lower end interface of the fixed bed reactor 9 is connected to the tail gas pipe, the lower end of the tail gas pipe passes through the metal shell 11 and extends to the outside, and is connected to a CO gas sensor 10.
[0020] Among them; the three air intake pipelines include a CO air intake pipeline 1, an O2 air intake pipeline 2 and an Ar air intake pipeline 3, the O2 air intake pipeline 2 is arranged between the CO air intake pipeline 1 and the Ar air intake pipeline 3, and the air inlets of the CO air intake pipeline 1, the O2 air intake pipeline 2 and the Ar air intake pipeline 3 are respectively connected to corresponding gas cylinders. By providing gas cylinders, CO (carbon monoxide) gas, O2 (oxygen) gas and Ar (argon) gas can be provided to the three pipelines respectively.
[0021] Among them, there are three first mass flow meters 5, and the three first mass flow meters 5 are all arranged inside the metal shell 11. The dial of the first mass flow meter 5 is arranged on the outer surface of the metal shell 11, which is convenient for observing the gas flow in the intake pipe.
[0022] Among them, a second valve control 401 is arranged on the gas pipeline arranged at the exhaust end of the gas mixing chamber 6, a pressure gauge 7 is arranged on the side of the second valve control 401 on the gas pipeline away from the gas mixing chamber 6, and a second mass flow meter 501 is arranged between the second valve control 401 and the pressure gauge 7 on the gas pipeline. The valve knob of the second valve control 401, the dial of the second mass flow meter 501 and the dial of the pressure gauge 7 are all arranged on the outer surface of the metal shell 11 through the reserved holes opened on the metal shell 11. By arranging the second valve control 401 and the second mass flow meter 501, it is convenient to observe and control the flow of the gas discharged from the gas mixing chamber 6 inside the gas pipeline.
[0023] Among them; the metal shell 11 at the fixed bed reactor 9 can be opened, the metal shell 11 and the fixed bed reactor 9 are an integrated structure, the outer shell jacket of the fixed bed reactor 9 is filled with quartz wool, a reaction tube is arranged in the center of the fixed bed reactor 9, the reaction tube is a quartz glass tube, the reaction tube is filled with a catalyst, and the reaction tube and the two ends of the catalyst are filled with quartz wool. By filling the outer shell jacket of the fixed bed reactor 9 with quartz wool, effective insulation can be performed, and by filling the reaction tube and the two ends of the catalyst with quartz wool, heat loss is reduced and airflow is prevented from blowing away the sample.
[0024] Among them, a thermocouple in contact with the catalyst bed is inserted into the reaction tube, and a temperature controller 8 is arranged at the upper end of one side of the fixed bed reactor 9. The temperature controller 8 is electrically connected to the thermocouple through a wire, and the temperature controller 8 panel is arranged on the outer surface of the metal shell 11. By setting the thermocouple and the temperature controller 8, the temperature controller 8 controls the operation of the thermocouple to adjust the reaction temperature.
[0025] Working principle: by connecting corresponding gas cylinders to the air inlets of CO air inlet pipe 1, O2 air inlet pipe 2 and Ar air inlet pipe 3 respectively, CO, O2 and Ar gases pass through their respective air inlet pipes and control the gas flow through the first valve control 4 and the first mass flow meter 5, and then merge into the gas mixing chamber 6 to mix and generate a mixed gas, and the mixed gas enters the fixed bed reactor 9 for catalytic reaction, and the reacted gas is connected to an external CO gas sensor 10 to detect the CO residual amount, and the CO conversion rate is calculated according to the CO consumption, so as to achieve the purpose of evaluating the activity of the newly prepared catalyst.
[0026] Furthermore, the fixed bed reactor 9 is filled with quartz wool in the outer jacket, which can effectively keep warm. By filling quartz wool in the reaction tube and at both ends of the catalyst, heat loss is reduced and airflow is prevented from blowing away the sample. A thermocouple and a temperature controller 8 are provided, and the temperature controller 8 controls the operation of the thermocouple to adjust the reaction temperature. All parts are integrated in a closed metal shell 11, which has a more compact structure, a more beautiful appearance, a small size, and a small footprint. The metal shell 11 has a stronger protective effect on the entire system, which greatly increases the service life of the equipment. The gas chromatography device of the traditional catalyst reaction activity evaluation device is replaced by a gas sensor, which greatly saves costs.
[0027] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A compact gas-solid catalytic reaction activity evaluation device, characterized in that: The invention comprises a metal shell (11), three air intake pipes are arranged outside the metal shell (11), a first valve control (4) is arranged on each air intake pipe outside the metal shell (11), a first mass flow meter (5) is arranged on each air intake pipe and located on one side of the first valve control (4), the exhaust ends of the three air intake pipes pass through the side wall of the metal shell (11) to connect to a main flow pipe, a gas mixing chamber (6) is arranged at the gas delivery end of the main flow pipe, the exhaust port of the gas mixing chamber (6) is connected to a gas delivery pipe, a fixed bed reactor (9) is connected inside the metal shell (11) and located at the gas delivery port of the gas delivery pipe, the lower end interface of the fixed bed reactor (9) is connected to a tail gas pipe, the lower end of the tail gas pipe passes through the metal shell (11) and extends to the outside, and is connected to a CO gas sensor (10).
2. A compact gas-solid catalytic reaction activity evaluation device according to claim 1, characterized in that: The three-way air intake pipeline comprises a CO air intake pipeline (1), an O2 air intake pipeline (2) and an Ar air intake pipeline (3); the O2 air intake pipeline (2) is arranged between the CO air intake pipeline (1) and the Ar air intake pipeline (3); and the air inlets of the CO air intake pipeline (1), the O2 air intake pipeline (2) and the Ar air intake pipeline (3) are respectively connected to corresponding gas cylinders.
3. A compact gas-solid catalytic reaction activity evaluation device according to claim 1, characterized in that: Three first mass flow meters (5) are provided, and the three first mass flow meters (5) main bodies are all arranged inside the metal shell (11), and the dials of the first mass flow meters (5) are arranged on the outer surface of the metal shell (11).
4. A compact gas-solid catalytic reaction activity evaluation device according to claim 1, characterized in that: A second valve control (401) is provided on the gas pipeline provided at the exhaust end of the gas mixing chamber (6); a pressure gauge (7) is provided on the side of the gas pipeline away from the gas mixing chamber (6) of the second valve control (401); and a second mass flow meter (501) is provided between the second valve control (401) and the pressure gauge (7) on the gas pipeline.
5. A compact gas-solid catalytic reaction activity evaluation device according to claim 4, characterized in that: The valve knob of the second valve control (401), the dial of the second mass flow meter (501) and the dial of the pressure gauge (7) are all arranged on the outer surface of the metal shell (11) through reserved holes opened on the metal shell (11).
6. A compact gas-solid catalytic reaction activity evaluation device according to claim 1, characterized in that: The metal shell (11) at the fixed bed reactor (9) can be opened, and the metal shell (11) and the fixed bed reactor (9) are an integrated structure. The outer jacket of the fixed bed reactor (9) is filled with quartz wool. A reaction tube is arranged at the center of the fixed bed reactor (9), and the reaction tube is a quartz glass tube. The reaction tube is filled with a catalyst, and the reaction tube and the two ends of the catalyst are filled with quartz wool.
7. A compact gas-solid catalytic reaction activity evaluation device according to claim 6, characterized in that: A thermocouple in contact with the catalyst bed is inserted into the reaction tube, and a temperature controller (8) is arranged at the upper end of one side of the fixed bed reactor (9). The temperature controller (8) is electrically connected to the thermocouple via a wire, and a panel of the temperature controller (8) is arranged on the outer surface of the metal shell (11).