A catalyst effect detection device for methanol reforming hydrogen production

Abstract

The utility model provides a catalyst effect detection device for hydrogen production from methanol reforming. The catalyst effect detection device for hydrogen production from methanol reforming includes a reactor, the interior of the reactor is fixedly connected to a fixed pipe, one end of the fixed pipe is threadedly connected to a screw plug; the connecting pipe connected to the insulation pipe is inserted into the interior of the mounting pipe through a through hole; the interior of the mounting pipe engages with a catalyst carrier, the interior of the fixed pipe is installed with an internal funnel-shaped first rubber pad, a fixing ring and a rubber ring are installed on the side wall of the mounting pipe, and the rubber ring with a triangular cross-section engages with the interior of the first rubber pad; a second rubber pad is installed on the side wall of the connecting pipe connected to the insulation pipe, and the second rubber pad contacts the inner side wall of the fixed pipe. The catalyst effect detection device for hydrogen production from methanol reforming provided by the utility model has the advantages of simple and convenient detection process, easy operation, and accelerated detection effect.

Description

Technical Field

[0001] The utility model relates to the technical field of methanol reforming hydrogen production, in particular to a catalyst effect detection device for methanol reforming hydrogen production. Background Art

[0002] The methanol reforming hydrogen production process refers to the process of passing methanol and water vapor through a catalyst under certain temperature and pressure conditions. Under the action of the catalyst, methanol cracking reaction and carbon monoxide conversion reaction occur to produce hydrogen and carbon dioxide.

[0003] In the process of methanol reforming to produce hydrogen, the role of catalysts is crucial. To ensure the catalytic effect of the catalyst, the performance of the catalyst needs to be tested before use. However, the testing process is complicated and time-consuming. In addition, various catalysts have different diameters. Catalysts of different sizes need to be replaced in different reaction chambers for testing, which reduces the detection efficiency.

[0004] Therefore, it is necessary to provide a new catalyst effect detection device for methanol reforming hydrogen production to solve the above technical problems. Utility Model Content

[0005] The technical problem solved by the utility model is to provide a catalyst effect detection device for methanol reforming hydrogen production, which has a simple and convenient detection process, is easy to operate, and accelerates the detection effect.

[0006] In order to solve the above technical problems, the utility model provides a catalyst effect detection device for methanol reforming hydrogen production, which includes: a reactor, the reactor is connected to the vaporization chamber through an insulation tube, the storage cylinder is connected to the interior of the vaporization chamber through a high-precision metering pump, and heating coils are installed in the reactor and the interior of the vaporization chamber; the interior of the reactor is fixedly connected to a fixed tube, one end of the fixed tube is threadedly connected to a screw plug, and connecting tubes are installed in the screw plug and the interior of the fixed tube, and the connecting tube is connected to the insulation tube or the condenser; the connecting tube connected to the insulation tube passes through a through hole and is inserted into the interior of the mounting tube; the interior of the mounting tube is clamped with a catalyst carrier, and a screw is connected to the mounting tube. The catalyst carrier is fixed to the inside of the mounting tube by a threaded connection, and the screw plug contacts the side wall of the mounting tube; a first internal funnel-shaped rubber pad is installed inside the fixed tube, and a fixing ring and a rubber ring are installed on the side wall of the mounting tube, and the rubber ring with a triangular cross-section engages with the inside of the first rubber pad; a second rubber pad is installed on the side wall of the connecting tube connected to the insulation tube, and the second rubber pad contacts the inner wall of the fixed tube; a water pipe is wrapped around the side wall of the condenser, and the water pipe is connected to the inside of a low-temperature constant temperature bath, and the bottom end of the condenser is connected to a gas-liquid separator, and the gas separated by the gas-liquid separator enters the inside of a gas chromatograph and a soap film flowmeter in turn for detection.

[0007] Preferably, the gasification chamber is connected to the reduction gas cylinder via a one-way valve, a mass flow meter, a ball valve, and a pressure reducing valve in sequence.

[0008] Preferably, the vaporization chamber is connected to the nitrogen cylinder through the one-way valve, the mass flow meter, the ball valve, and the pressure reducing valve in sequence.

[0009] Preferably, the ball valve and the one-way valve are sequentially installed between the high-precision metering pump and the vaporization chamber.

[0010] Preferably, the ball valve is installed at the bottom end of the gas-liquid separator.

[0011] Preferably, the inner diameter of the fixing tube is larger than the inner diameter of the mounting tube, and the inner diameter of the mounting tube is equal to the diameter of the catalyst carrier.

[0012] Preferably, the side wall of the second rubber pad is funnel-shaped, and the diameter of the through hole is smaller than the maximum diameter of the second rubber pad and larger than the minimum diameter of the second rubber pad.

[0013] Compared with related technologies, the catalyst effect detection device for methanol reforming hydrogen production provided by the present invention has the following beneficial effects:

[0014] The utility model provides a catalyst effect detection device for hydrogen production by reforming methanol. When installing the catalyst carrier, the mounting tube is selected, the inner diameter of the mounting tube is equal to the diameter of the catalyst carrier, the catalyst carrier is placed in the interior of the mounting tube and fixed with screws; the mounting tube is inserted into the interior of the fixed tube, the rubber ring at one end of the mounting tube enters the interior of the first rubber pad, and a connecting tube passes through the through hole and enters the interior of the mounting tube; the screw plug is rotated at one end of the fixed tube, the screw plug enters the interior of the fixed tube and squeezes the mounting tube. As the mounting tube is squeezed, the mounting tube drives the fixed ring to squeeze the rubber ring, so that the rubber ring with a triangular cross-section enters the first rubber pad with a funnel-shaped interior, thereby increasing the contact area and squeezing force between the two, thereby increasing the sealing between the mounting tube and the first rubber pad; when the mounting tube is squeezed and moved, the mounting tube squeezes the second rubber pad with a funnel-shaped interior, so that the elastic second rubber pad passes through the through hole and then returns to its original shape to contact the mounting tube. The inner wall of the mounting tube further increases the sealing between the connecting tube and the mounting tube, and multiple seals are used to prevent the mounting tube from leaking during the detection process, so that the gas inside the mounting tube passes through the catalyst inside the mounting tube, which is convenient for detecting the catalyst inside the mounting tube; during the detection, the catalyst is first reduced at 300-500°C using reducing gas to maintain its activity, and the methanol aqueous solution is pumped into the vaporization chamber by a high-precision metering pump for vaporization, and the carrier gas nitrogen is controlled by a mass flow meter to enter the vaporization chamber and mix with the methanol water vapor and enter the reactor to react with the catalyst after contact, and the reaction product is condensed by the condenser and enters the gas-liquid separator for gas-liquid separation, and its gas enters the gas chromatograph to detect the gas composition, and the flow is detected by the soap film flowmeter, so as to quickly detect the use effect of the catalyst, and the device is simple and convenient in the detection process, easy to operate, and accelerates the detection effect; the inner diameter of the fixed tube is larger than the inner diameter of the mounting tube. When detecting catalysts of different sizes, it is only necessary to replace the mounting tube corresponding to the catalyst size, which is suitable for detecting catalysts of different sizes. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a structural schematic diagram of a preferred embodiment of a device for detecting the effect of a catalyst for hydrogen production by methanol reforming provided by the present invention;

[0016] Figure 2 for Figure 1 Schematic diagram of the internal structure of the reactor shown;

[0017] Figure 3 for Figure 2 An enlarged schematic diagram of the structure at point A is shown.

[0018] Numbers in the figure: 1-nitrogen cylinder, 2-reducing gas cylinder, 3-pressure reducing valve, 4-ball valve, 5-mass flowmeter, 6-check valve, 7-storage cylinder, 8-high-precision metering pump, 9-vaporization chamber, 10-insulation tube, 11-reactor, 12-condenser, 13-low-temperature constant temperature bath, 14-gas-liquid separator, 15-gas chromatograph, 16-soap film flowmeter, 17-heating coil, 18-fixing tube, 19-mounting tube, 20-catalyst carrier, 21-screw, 22-screw plug, 23, connecting pipe, 24-first rubber pad, 25-second rubber pad, 26-rubber ring, 27-fixing ring, 28, through hole. DETAILED DESCRIPTION

[0019] The present invention will be further described below with reference to the accompanying drawings and implementation examples.

[0020] Please refer to Figure 1 、 Figure 2 and Figure 3 .in Figure 1 This is a structural schematic diagram of a preferred embodiment of a device for detecting the effect of a catalyst for hydrogen production by methanol reforming provided by the present invention; Figure 2 for Figure 1 Schematic diagram of the internal structure of the reactor shown; Figure 3 for Figure 2A schematic diagram of the structure at A is shown. One of the catalyst effect detection devices for methanol reforming hydrogen production includes: a fixed pipe 18 is fixedly connected to the interior of the reactor 11, one end of the fixed pipe 18 is threadedly connected to a screw plug 22, a connecting pipe 23 is installed inside the screw plug 22 and the fixed pipe 18, and the connecting pipe 23 is connected to the insulation pipe 10 or the condenser 12; the connecting pipe 23 connected to the insulation pipe 10 passes through the through hole 28 and is inserted into the interior of the mounting pipe 19; the interior of the mounting pipe 19 is engaged with a catalyst carrier 20, and a screw 21 is threadedly connected to the mounting pipe 19 to fix the catalyst carrier 20 to the mounting pipe 19. The inside of the mounting tube 19, and the screw plug 22 abuts against the side wall of the mounting tube 19; the inside of the fixed tube 18 is installed with an internal funnel-shaped first rubber pad 24, and the side wall of the mounting tube 19 is installed with a fixing ring 27 and a rubber ring 26, and the rubber ring 26 with a triangular cross-section engages with the inside of the first rubber pad 24; the side wall of the connecting tube 23 connected to the insulation tube 10 is installed with a second rubber pad 25, and the second rubber pad 25 abuts against the inner side wall of the fixed tube 18; when installing the catalyst carrier 4, the mounting tube 19 is selected, and the inner diameter of the mounting tube 19 is equal to that of the catalyst carrier 4. diameter, put the catalyst carrier 4 into the interior of the mounting tube 49 and fix it with the screw 21; insert the mounting tube 19 into the interior of the fixed tube 18, the rubber ring 26 at one end of the mounting tube 19 enters the interior of the first rubber pad 24, and a connecting tube 23 passes through the through hole 28 and enters the interior of the mounting tube 19; rotate the screw plug 22 at one end of the fixed tube 18, the screw plug 22 enters the interior of the fixed tube 18 and squeezes the mounting tube 19. As the mounting tube 19 is squeezed, the mounting tube 19 drives the fixing ring 27 to squeeze the rubber ring 26, so that The rubber ring 26 with a triangular cross-section enters the first rubber pad 24 with a funnel-shaped interior, increasing the contact area and extrusion force between the two, thereby increasing the sealing between the mounting tube 19 and the first rubber pad 24; when the mounting tube 19 is squeezed and moved, the mounting tube 19 squeezes the second funnel-shaped rubber pad 25, so that the elastic second rubber pad 25 passes through the through hole 28 and then returns to its original shape to contact the inner wall of the mounting tube 19, thereby further increasing the sealing between the connecting tube 23 and the mounting tube 19, and fixing the catalyst inside the reactor 11.

[0021] The vaporization chamber 9 is connected to the reduction gas cylinder 2 in sequence through the one-way valve 6, the mass flowmeter 5, the ball valve 4, and the pressure reducing valve 3. Before monitoring, in order to maintain the activity of the catalyst, the hydrogen inside the reduction gas cylinder 2 enters the interior of the ball valve 4 through the pressure reducing valve 3. The pressure reducing valve 3 controls the outlet pressure of the hydrogen to avoid excessive pressure when the hydrogen flows out. The ball valve 4 controls the flow rate of the hydrogen and then enters the interior of the mass flowmeter 5. The mass flowmeter 5 monitors the flow rate of the hydrogen to facilitate heat supply by adjusting the flow rate of the hydrogen by adjusting the ball valve 4. The one-way valve 6 prevents the hydrogen from flowing back and then enters the vaporization chamber 9, the insulation pipe 10, and the interior of the mounting pipe 19 in sequence to contact the catalyst carrier 4. The heating coil 17 inside the reactor 11 makes the temperature inside the reactor 11 reach 300-500°C, so that the hydrogen reduces the catalyst at 300-500°C to maintain its activity.

[0022] Reactor 11, the reactor 11 is connected to the vaporization chamber 9 through the insulation pipe 10, the storage cylinder 7 is connected to the interior of the vaporization chamber 9 through the high-precision metering pump 8, and the reactor 11 and the vaporization chamber 9 are both installed with a heating coil 17; the vaporization chamber 9 is connected to the nitrogen cylinder 1 through the one-way valve 6, the mass flowmeter 5, the ball valve 4, and the pressure reducing valve 3 in sequence; the ball valve 4 and the one-way valve 6 are installed in sequence between the high-precision metering pump 8 and the vaporization chamber 9. After the catalyst is reduced, the heating coil 17 is powered on to operate, so that the interior of the vaporization chamber 9 and the reactor 11 is in a high-temperature state, and the methanol aqueous solution is pumped into the vaporization chamber 9 by the high-precision metering pump 8 for vaporization. The nitrogen inside the nitrogen cylinder 1 is controlled by the mass flowmeter to enter the vaporization chamber 9 and mix with the methanol water vapor and enter the reactor 11 to react after contacting the catalyst;

[0023] The side wall of the condenser 12 is wound with a water pipe, which is connected to the interior of a low-temperature constant-temperature tank 13. The heat inside the condenser 12 is dissipated into the low-temperature constant-temperature tank 13 through the liquid inside the water pipe, thereby keeping the interior of the condenser 12 at a low temperature, which is convenient for gas cooling. The bottom end of the condenser 12 is connected to a gas-liquid separator 14. The gas separated by the gas-liquid separator 14 enters the interior of a gas chromatograph 15 and a soap film flowmeter 16 in sequence for detection. The product after the reaction in the reactor 11 enters the interior of the condenser 12 through the connecting pipe 23. After being condensed by the condenser 12, it enters the gas-liquid separator 14 for gas-liquid separation. The gas enters the gas chromatograph 15 for gas composition detection, and the soap film flowmeter 16 for flow detection, thereby quickly detecting the effectiveness of the catalyst.

[0024] The ball valve 4 is installed at the bottom end of the gas-liquid separator 14 to facilitate opening the ball valve 4 to discharge excess liquid inside the gas-liquid separator 14 .

[0025] The inner diameter of the fixed tube 18 is larger than that of the mounting tube 19 , and the inner diameter of the mounting tube 19 is equal to the diameter of the catalyst carrier 20 . In order to facilitate the installation of the mounting tubes 19 with different diameters inside the fixed tube 18 , catalysts of different sizes can be monitored.

[0026] The side wall of the second rubber pad 25 is funnel-shaped, and the diameter of the through hole 28 is smaller than the maximum diameter of the second rubber pad 25 and larger than the minimum diameter of the second rubber pad 25. In order to facilitate the second rubber pad 25 to pass through the through hole 28 and enter the interior of the mounting tube 19, the second rubber pad 25 is closely attached to the inner wall of the mounting tube 19, thereby increasing the sealing between the connecting tube 23 and the mounting tube 19.

[0027] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the description and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A catalyst effect detection device for methanol reforming hydrogen production, characterized in that: include: A reactor (11), wherein the reactor (11) is connected to a vaporization chamber (9) via a heat preservation pipe (10), a storage cylinder (7) is connected to the interior of the vaporization chamber (9) via a high-precision metering pump (8), and heating coils (17) are installed inside the reactor (11) and the vaporization chamber (9); The interior of the reactor (11) is fixedly connected to a fixed pipe (18), one end of the fixed pipe (18) is threadedly connected to a screw plug (22), a connecting pipe (23) is installed inside the screw plug (22) and the fixed pipe (18), and the connecting pipe (23) is connected to the insulation pipe (10) or the condenser (12); the connecting pipe (23) connected to the insulation pipe (10) passes through a through hole (28) and is inserted into the interior of the mounting pipe (19); the interior of the mounting pipe (19) is engaged with a catalyst carrier (20), and the screw (21) is threadedly connected to the mounting pipe (19) to connect the catalyst carrier (20) to the condenser (12). The chemical carrier (20) is fixed inside the mounting tube (19), and the screw plug (22) contacts the side wall of the mounting tube (19); a first rubber pad (24) with an internal funnel shape is installed inside the fixing tube (18), a fixing ring (27) and a rubber ring (26) are installed on the side wall of the mounting tube (19), and the rubber ring (26) with a triangular cross section is engaged with the inside of the first rubber pad (24); a second rubber pad (25) is installed on the side wall of the connecting tube (23) connected to the thermal insulation tube (10), and the second rubber pad (25) contacts the inner side wall of the fixing tube (18); A water pipe is wound around the side wall of the condenser (12), and the water pipe is connected to the interior of a low-temperature constant temperature tank (13). The bottom end of the condenser (12) is connected to a gas-liquid separator (14). The gas separated by the gas-liquid separator (14) enters the interior of a gas chromatograph (15) and a soap film flowmeter (16) in sequence for detection.

2. The catalyst effect detection device for methanol reforming hydrogen production according to claim 1, characterized in that: The gasification chamber (9) is connected to the reduction gas cylinder (2) via a one-way valve (6), a mass flow meter (5), a ball valve (4) and a pressure reducing valve (3) in sequence.

3. The catalyst effect detection device for methanol reforming hydrogen production according to claim 2, characterized in that: The vaporization chamber (9) is connected to the nitrogen cylinder (1) via the one-way valve (6), the mass flow meter (5), the ball valve (4), and the pressure reducing valve (3) in sequence.

4. The catalyst effect detection device for methanol reforming hydrogen production according to claim 2, characterized in that: The ball valve (4) and the one-way valve (6) are installed in sequence between the high-precision metering pump (8) and the vaporization chamber (9).

5. The catalyst effect detection device for methanol reforming hydrogen production according to claim 2, characterized in that: The ball valve (4) is installed at the bottom end of the gas-liquid separator (14).

6. The catalyst effect detection device for methanol reforming hydrogen production according to claim 1, characterized in that: The inner diameter of the fixed tube (18) is greater than the inner diameter of the mounting tube (19), and the inner diameter of the mounting tube (19) is equal to the diameter of the catalyst carrier (20).

7. The catalyst effect detection device for methanol reforming hydrogen production according to claim 1, characterized in that: The side wall of the second rubber pad (25) is in a funnel-shaped structure, and the diameter of the through hole (28) is smaller than the maximum diameter of the second rubber pad (25) and larger than the minimum diameter of the second rubber pad (25).

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