Intelligent catalyst preparation device and system thereof

Abstract

The invention discloses an intelligent catalyst preparation device and system, and relates to the technical field of teaching instruments. The intelligent catalyst preparation device and system comprise a motor, a glass kettle, an armored thermal resistor, a stirring paddle, a sampling valve, a circulating water bath, a suction flask, a pressure gauge, a vacuum suction filtration valve, a rotary vane type vacuum pump, a vacuum buffer tank and a control computer. And the accuracy and repeatability of the experiment are greatly improved. In a teaching scene, the intelligent control characteristic helps students to understand the catalyst preparation process and principle more clearly and accurately, and the teaching effect is improved. In the aspect of scientific research, stable and accurate reaction condition control provides a reliable experimental basis for the research of activated aluminum oxide and related catalysts, the scientific research progress is powerfully promoted, and the development and innovation of the chemical industry field in the aspect of catalyst preparation technology are promoted.

Description

Technical Field

[0001] The present invention relates to the technical field of teaching instruments, and particularly relates to an intelligent device and system for preparing catalysts. Background Art

[0002] Activated alumina (Al 2 O 3 ) is an inorganic functional material with excellent properties. With its unique structural advantages and adjustable physical and chemical properties, it plays an important role of "universal carrier" in the chemical industry. This porous material not only shows its prowess in basic fields such as gas drying and chromatographic separation with excellent adsorption performance, but also becomes a star carrier in the catalytic field due to its "versatile" microstructure - from catalytic cracking reactors in refinery units to fixed-bed reactors in fine chemical industry, its honeycomb-like pore system is like a miniature molecular highway, providing an ideal mass transfer interface for various catalytic reactions. Learning the preparation method of Al 2 O 3 is of great significance for mastering the preparation of catalysts.

[0003] In experimental teaching, activated alumina is usually prepared using aluminum trichloride as the raw material. Generally, steps such as precipitation, aging, and filtration need to be manually controlled respectively, and there are errors in reaction conditions. Regarding these points, people have been seeking an ideal technical solution to design a device for experiment, teaching, and scientific research that can intelligently control the experiment and more accurately control reaction conditions. Summary of the Invention

[0004] The purpose of the present invention is to solve at least one of the technical problems existing in the prior art, and provide an intelligent device and system for preparing catalysts, which can solve the problems in the background art.

[0005] To achieve the above purpose, the present invention provides the following technical solution: An intelligent device for preparing catalysts, comprising a motor, a glass kettle, a sheathed thermal resistor, a stirring paddle, a sampling valve, a circulating water bath, a suction flask, a pressure gauge, a vacuum suction filter valve, a rotary vane vacuum pump, a vacuum buffer tank, and a control computer. The motor is connected to the glass kettle through an angle aluminum bracket, a stirring paddle is installed on the output end of the motor, the stirring paddle is located inside the glass kettle, the glass kettle is provided with a sheathed thermal resistor and a sampling valve, and the glass kettle is connected to the circulating water bath through a rubber pipeline;

[0006] The suction flask is connected to the pressure gauge, the vacuum suction filter valve, the rotary vane vacuum pump, and the vacuum buffer tank through pipelines.

[0007] Preferably, a vent valve is installed on the vacuum buffer tank.

[0008] Preferably, the rotary vane vacuum pump is connected to a vacuum buffer tank, the outlet of the vacuum buffer tank is connected to a pressure gauge and a suction filtration bottle, the circulating water bath is connected to a glass kettle, the upper port of the glass kettle is connected to a motor, a stirring paddle, and an armored thermal resistor, and a control computer is used to control the start and stop of the circulating water bath, the rotary vane vacuum pump, the motor speed, and the armored thermal resistor temperature display.

[0009] Preferably, a ball valve is installed at the bottom of the vacuum buffer tank.

[0010] Preferably, the glass kettle is processed into a double layer, and the outer layer is connected to a circulating water bath.

[0011] Preferably, the circulating water bath is connected to a rubber tube with an additional insulation cotton tube.

[0012] Preferably, a heat-insulating cover is provided outside the glass kettle, and heat-insulating cotton is stuffed between the heat-insulating cover and the glass kettle.

[0013] Preferably, a catalyst preparation intelligent system comprises the following system steps:

[0014] S1: Use the control computer to control the circulating water bath, start the circulating water bath, add distilled water into the glass kettle until the outer layer of the glass kettle is filled, and start heating;

[0015] S2: Unscrew the vacuum filtration valve, click the rotary vane vacuum pump system of the computer control system, and start the rotary vane vacuum pump;

[0016] S3: Add the reaction chemicals from the feed port at the top of the glass kettle. When the temperature feedback signal of the thermal resistor of the computer control system reaches 40°C, click the motor system of the computer control system to start the motor stirring, set the speed to 300 rpm, and stir for 30 minutes;

[0017] S4: After the stirring time is over, the temperature of the circulating water bath automatically rises to 70°C, and the aging is static for one hour. When the time is up, the computer control system will remind you;

[0018] S5: After aging, the gel is placed in a suction filtration bottle and filtered to neutrality, and a 12M nitric acid solution is prepared, with the amount being 2-3% (weight) of the filter cake. The gel filter cake is mixed with nitric acid and stirred vigorously with a glass rod. The filter cake gradually becomes a milky Al(OH) 3 sol (flows very well), then stir vigorously for a certain time to break up all the lumps of gel, take the slurry with a 50 ml syringe and attach the needle;

[0019] S6: Take a 500 ml graduated cylinder, place 300 ml of 12.5% ammonia water and 50 ml of transformer oil in it, and then add a small amount of surfactant to form a simple oil-ammonia column. With the tip of the needle facing downwards, drip the solution into the oil-ammonia column. The sol shrinks into a ball in the oil layer, passes through the oil layer, and then turns into a spherical gel in the ammonia water. Age in the ammonia water for 30 minutes, suck out the oil layer and ammonia water, pour out the gel ball, wash the oil and ammonia water with distilled water, and a small amount of detergent can be added during washing;

[0020] S7: After washing, drying, and calcining, γ-Al 2 O 3 catalyst is obtained.

[0021] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0022] (1) For the catalyst preparation intelligent device and its system of the present invention, the present invention can accurately control the reaction conditions to ensure that each step is carried out under preset parameters, greatly improving the accuracy and repeatability of the experiment. In the teaching scenario, its intelligent control characteristics help students understand the catalyst preparation process and principle more clearly and accurately, improving the teaching effect. In scientific research, the stable and precise control of reaction conditions provides a reliable experimental basis for the research of activated alumina and related catalysts, strongly promoting scientific research progress and facilitating the development and innovation of catalyst preparation technology in the chemical industry. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The present invention will be further described below with reference to the drawings and embodiments:

[0024] Figure 1 It is a schematic diagram of the equipment connection structure of the present invention;

[0025] Figure 2 It is a schematic diagram of the external structure of the equipment of the present invention;

[0026] Figure 3 It is a schematic diagram of the system steps of the present invention.

[0027] Reference numerals: 1, motor; 2, glass kettle; 3, armored thermal resistance; 4, stirring paddle; 5, sampling valve; 6, circulating water bath; 7, suction flask; 8, pressure gauge; 9, vacuum suction filter valve; 10, rotary vane vacuum pump; 11, vacuum buffer tank; 12, vent valve; 13, control computer. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0028] This part will describe in detail the specific embodiments of the present invention. The preferred embodiments of the present invention are shown in the drawings. The role of the drawings is to supplement the description in the text part of the specification, enabling people to intuitively and vividly understand each technical feature and the overall technical solution of the present invention, but it cannot be understood as a limitation on the protection scope of the present invention.

[0029] In the description of the present invention, it should be understood that with respect to the orientation description, for example, the orientation or positional relationship indicated by up, down, front, back, left, right, etc. is based on the orientation or positional relationship shown in the drawings. This is only for the convenience of describing the present invention 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. Therefore, it should not be construed as a limitation to the present invention.

[0030] In the description of the present invention, greater than, less than, exceeding, etc. are understood to exclude the present number, and above, below, within, etc. are understood to include the present number. If the first and second are described, it is only for the purpose of distinguishing technical features and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or the sequence relationship of the indicated technical features.

[0031] In the description of the present invention, unless otherwise clearly defined, words such as set, installed, connected, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meaning of the above words in the present invention in combination with the specific content of the technical solution.

[0032] Please refer to Figure 1-2 , the present invention provides a technical solution: an intelligent device for preparing a catalyst, including a motor 1, a glass kettle 2, an armored thermal resistor 3, a stirring paddle 4, a sampling valve 5, a circulating water bath 6, a suction flask 7, a pressure gauge 8, a vacuum suction filter valve 9, a rotary vane vacuum pump 10, a vacuum buffer tank 11, a vent valve 12 and a control computer 13;

[0033] The motor 1 is connected to the glass kettle 2 through an angle aluminum bracket. A stirring paddle 4 is installed on the output end of the motor 1. The stirring paddle 4 is located inside the glass kettle 2. The glass kettle 2 is provided with an armored thermal resistor 3 and a sampling valve 5. The glass kettle 2 is connected to the circulating water bath 6 through a rubber pipeline;

[0034] The suction flask 7 is connected to the pressure gauge 8, the vacuum suction filter valve 9, the rotary vane vacuum pump 10, and the vacuum buffer tank 11 through pipelines;

[0035] Among them, a vent valve 12 is installed on the vacuum buffer tank 11;

[0036] Among them, the rotary vane vacuum pump 10 is connected to the vacuum buffer tank 11. The outlet of the vacuum buffer tank 11 is connected to the pressure gauge 8 and the suction flask 7. The circulating water bath 6 is connected to the glass kettle 2. The upper port of the glass kettle 2 is connected to the motor 1, the stirring paddle 4, and the armored thermal resistor. The control computer 13 is used to control the start and stop of the circulating water bath 6 and the rotary vane vacuum pump 10, the rotation speed of the motor 1, and the temperature display of the armored thermal resistor 3.

[0037] Among them, in order to maintain the best vacuum filtration effect, a ball valve is installed at the bottom of the vacuum buffer tank 11 to facilitate waste discharge.

[0038] In order to make the reaction heated more evenly, the glass kettle 2 is processed into a double layer, and the outer layer is connected to a circulating water bath, so that the heating area of ​​the inner glass kettle is larger and more even.

[0039] In order to maintain the temperature of the fluid in the circulating water bath 6, a heat-insulating cotton tube is installed outside the rubber tube connected to the circulating water bath 6.

[0040] Furthermore, a heat-insulating cover is provided outside the glass kettle 2, and heat-insulating cotton is stuffed between the heat-insulating cover and the glass kettle 2, so as to keep the glass kettle 2 warm and prevent burns, thereby improving the safety during experiments, scientific research and teaching.

[0041] For reference Figure 3 , a catalyst preparation intelligent system, including the following system steps,

[0042] S1: Use the control computer to control the circulating water bath, start the circulating water bath, add distilled water into the glass kettle until the outer layer of the glass kettle is filled, and start heating;

[0043] S2: Unscrew the vacuum filtration valve, click the rotary vane vacuum pump system of the computer control system, and start the rotary vane vacuum pump;

[0044] S3: Add the reaction chemicals from the feed port at the top of the glass kettle. When the temperature feedback signal of the thermal resistor of the computer control system reaches 40°C, click the motor system of the computer control system to start the motor stirring, set the speed to 300 rpm, and stir for 30 minutes;

[0045] S4: After the stirring time is over, the circulating water bath temperature automatically rises to 70°C and the system is kept stationary for one hour. When the time is up, the computer control system will remind you.

[0046] S5: After aging, the gel is placed in a suction filtration bottle and filtered to neutrality, and a 12M nitric acid solution is prepared, with the amount being 2-3% (weight) of the filter cake. The gel filter cake is mixed with nitric acid and stirred vigorously with a glass rod. The filter cake gradually becomes a milky Al(OH) 3 sol (flows very well), then stir vigorously for a certain time to break up all the lumps of gel, take the slurry with a 50 ml syringe and attach the needle;

[0047] S6: Take a 500ml measuring cylinder, put 300ml of 12.5% ​​ammonia water and 50ml of transformer oil in it, and then add a small amount of surfactant to form a simple oil-ammonia column. With the needle tip pointing downward, drip the solution into the oil-ammonia column. The sol shrinks into a ball in the oil layer and then enters the ammonia water to become a spherical gel. Aging in the ammonia water for 30 minutes, suck out the oil layer and ammonia water, pour out the gel ball, wash the oil and ammonia water with distilled water, and add a small amount of detergent during washing;

[0048] S7: After washing, drying and calcining, γ-Al 2O 3 Catalyst

[0049] Furthermore, the present invention can precisely control the reaction conditions to ensure that each step is carried out under preset parameters, greatly improving the accuracy and repeatability of the experiment. In the teaching scenario, its intelligent control characteristics help students understand the catalyst preparation process and principle more clearly and accurately, enhancing the teaching effect. In scientific research, the stable and precise control of reaction conditions provides a reliable experimental basis for the research of activated alumina and related catalysts, strongly promoting scientific research progress and facilitating the development and innovation of catalyst preparation technology in the chemical engineering field.

[0050] The embodiments of the present invention have been described in detail above in conjunction with the accompanying drawings. However, the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the scope of knowledge possessed by those of ordinary skill in the art.

Claims

1. An intelligent device for preparing catalyst, comprising a motor (1), a glass kettle (2), an armored thermal resistor (3), a stirring paddle (4), a sampling valve (5), a circulating water bath (6), a suction filtration bottle (7), a pressure gauge (8), a vacuum filtration valve (9), a rotary vane vacuum pump (10), a vacuum buffer tank (11) and a control computer (13), characterized in that: The motor (1) is connected to the glass kettle (2) via an aluminum angle bracket, a stirring paddle (4) is installed on the output end of the motor (1), the stirring paddle (4) is located inside the glass kettle (2), an armored thermal resistor (3) and a sampling valve (5) are provided on the glass kettle (2), and the glass kettle (2) is connected to a circulating water bath (6) via a rubber pipeline; The suction filtration bottle (7) is connected to a pressure gauge (8), a vacuum suction filtration valve (9), a rotary vane vacuum pump (10), and a vacuum buffer tank (11) through pipelines.

2. The intelligent device for preparing catalyst according to claim 1, characterized in that: The vacuum buffer tank (11) is provided with a vent valve (12).

3. The intelligent device for preparing catalyst according to claim 1, characterized in that: The rotary vane vacuum pump (10) is connected to a vacuum buffer tank (11), the outlet of the vacuum buffer tank (11) is connected to a pressure gauge (8) and a suction filtration bottle (7), the circulating water bath (6) is connected to a glass kettle (2), the upper port of the glass kettle (2) is connected to a motor (1) and a stirring paddle (4), and an armored thermal resistor, and the control computer (13) is used to control the start and stop of the circulating water bath (6), the rotary vane vacuum pump (10), the rotation speed of the motor (1), and the temperature display of the armored thermal resistor (3).

4. The intelligent device for preparing catalyst according to claim 1, characterized in that: A ball valve is installed at the bottom of the vacuum buffer tank (11).

5. The intelligent device for preparing catalyst according to claim 1, characterized in that: The glass kettle (2) is processed into a double layer, and the outer layer is connected to the circulating water bath (6).

6. The intelligent device and system for preparing catalyst according to claim 1, characterized in that: The circulating water bath (6) is connected to a rubber tube and a heat-insulating cotton tube is installed outside the rubber tube.

7. The intelligent device for preparing catalyst according to claim 1, characterized in that: A heat-insulating cover is arranged outside the glass kettle (2), and heat-insulating cotton is stuffed between the heat-insulating cover and the glass kettle (2).

8. A catalyst preparation intelligent system, characterized in that: The system steps include: S1: Use the control computer to control the circulating water bath, start the circulating water bath, add distilled water into the glass kettle until the outer layer of the glass kettle is filled, and start heating; S2: Unscrew the vacuum filtration valve, click the rotary vane vacuum pump system of the computer control system, and start the rotary vane vacuum pump; S3: Add the reaction chemicals from the feed port at the top of the glass kettle. When the temperature feedback signal of the thermal resistor of the computer control system reaches 40°C, click the motor system of the computer control system to start the motor stirring, set the speed to 300 rpm, and stir for 30 minutes; S4: After the stirring time is over, the temperature of the circulating water bath automatically rises to 70°C, and the aging is static for one hour. When the time is up, the computer control system will remind you; S5: After aging, the gel is placed in a suction filtration bottle and washed until neutral, and a 12M nitric acid solution is prepared, with an amount of 2-3% (weight) of the filter cake. The gel filter cake is mixed with nitric acid and stirred vigorously with a glass rod. The filter cake gradually turns into a milky Al(OH)3 sol (with good fluidity). Then, it is stirred vigorously for a certain period of time to break up all the blocky gels. The slurry is taken with a 50ml syringe and a needle is installed; S6: Take a 500ml measuring cylinder, put 300ml of 12.5% ​​ammonia water and 50ml of transformer oil in it, and then add a small amount of surfactant to form a simple oil-ammonia column. With the needle tip pointing downward, drip the solution into the oil-ammonia column. The sol shrinks into a ball in the oil layer and then enters the ammonia water to become a spherical gel. Aging in the ammonia water for 30 minutes, suck out the oil layer and ammonia water, pour out the gel ball, wash the oil and ammonia water with distilled water, and add a small amount of detergent during washing; S7: After washing, drying and calcining, the γ-Al2O3 catalyst is obtained.

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