Platinum-carbon catalyst synthesis integrated device capable of automatically controlling oil bath heating temperature

Abstract

The utility model discloses a platinum carbon catalyst synthesis integrated device capable of automatically controlling oil bath heating temperature, which comprises a slurry constant-temperature storage tank, a conveying pipeline, a slurry non-contact variable-frequency stepless speed regulation conveying pump, an oil bath heating device, a cooling device, a slurry storage tank and a computer, the conveying pipeline is provided with a slurry non-contact variable-frequency stepless speed regulation conveying pump, and the conveying pipeline is communicated with a slurry storage tank after sequentially passing through an oil bath heating device and a cooling device. The characteristics of high boiling point and fast heat conduction of edible rapeseed oil or peanut oil are utilized to heat slurry of a platinum-carbon catalyst as an oil bath heat energy carrier, so that chemical reaction inside the slurry is promoted, and the synthesis of the platinum-carbon catalyst is realized; and heating, cooling, and accurate control of temperature and flow velocity are integrated into one system, so that large-batch and automatic synthesis of the platinum-carbon catalyst is realized.

Description

Technical Field

[0001] The utility model relates to the technical field of hydrogen energy industry, in particular to an integrated device for synthesizing platinum-carbon catalysts with automatic control of oil bath heating temperature. Background Art

[0002] Develop the hydrogen energy industry, use renewable energy such as wind, light, and tide to produce hydrogen, use hydrogen as an energy carrier, realize long-distance pipeline transportation, and then use hydrogen to generate electricity.

[0003] Whether it is PEM electrolysis of water to produce hydrogen or proton exchange membrane fuel cells using hydrogen to generate electricity, catalysts prepared from "platinum group metals" are required. Among them, the most mature "platinum-carbon catalyst" has been widely used.

[0004] The membrane electrodes in a PEM electrolyzer are coated with a platinum-carbon catalyst. Under the action of an electric current, the platinum (Pt) atoms absorb hydrogen (H) atoms from water molecules, breaking them down into hydrogen and oxygen, and releasing hydrogen (H2) and oxygen (O2).

[0005] Hydrogen fuel cells also have membrane electrode systems, which consist of an anode, cathode, and proton exchange membrane. The anode is where the hydrogen fuel is oxidized, while the cathode is where the oxidant is reduced. Both electrodes contain platinum-carbon catalysts to accelerate the electrochemical reactions at the electrodes. Platinum (Pt) acts as a catalyst material, adsorbing hydrogen molecules on the platinum surface. These molecules are then split into atoms at the adsorption sites, generating a reaction at low temperatures, generating an electric current while simultaneously discharging water. This eliminates any harmful emissions.

[0006] It can be seen from this that platinum-carbon catalysts play a vital role, whether in PEM electrolysis of water to produce hydrogen or in hydrogen fuel cells using hydrogen to generate electricity, and are directly related to the performance, life and cost of PEM electrolyzers and fuel cells.

[0007] Currently, small-batch production typically involves heating and synthesizing catalysts in a beaker with a magnetic stirrer. This manual operation is cumbersome, with a low degree of automation and extremely low yields, severely restricting the development of fuel cell catalyst production. Currently, domestic procurement of platinum-carbon catalysts primarily relies on imports.

[0008] Therefore, there is a huge market space for the research and development of large-scale platinum-carbon catalyst production facilities and equipment. Utility Model Content

[0009] The purpose of the utility model is to provide an integrated device for synthesizing platinum-carbon catalysts with automatic oil bath heating temperature control, so as to solve the problems of difficult operation and low yield of the current synthesis of platinum-carbon catalysts.

[0010] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an integrated device for synthesizing platinum-carbon catalysts with automatic control of oil bath heating temperature, comprising a slurry constant temperature storage tank, a delivery pipeline, a slurry non-contact variable frequency stepless speed regulation delivery pump, an oil bath heating device, a cooling device, a slurry storage tank and a computer, wherein the slurry constant temperature storage tank is connected to the delivery pipeline, a slurry non-contact variable frequency stepless speed regulation delivery pump is provided on the delivery pipeline, and the delivery pipeline is connected to the slurry storage tank after passing through the oil bath heating device and the cooling device in sequence; an oil temperature monitor is provided in the oil bath heating device, and a water temperature monitor is provided in the cooling device, and the oil temperature monitor and the water temperature monitor are respectively connected to the computer, and the monitoring data of the oil temperature monitor is corresponding to the temperature control of the oil bath heating device, and the monitoring data of the water temperature monitor is corresponding to the temperature control of the cooling device.

[0011] Preferably, the slurry constant temperature storage tank includes two layers, an inner layer and an outer layer, wherein the inner layer is a slurry storage space and the outer layer is circulating constant temperature water.

[0012] Preferably, the oil bath heating device comprises an oil tank filled with rapeseed oil or peanut oil, wherein a heating tube, an oil stirrer and an oil bath coil support are provided in the oil tank.

[0013] Preferably, the oil bath coil support comprises a plurality of vertical plates distributed in a cylindrical shape, and slots for inserting into the delivery pipeline are respectively distributed on the inner and outer sides of the vertical plates.

[0014] Preferably, the oil tank is provided with a cotton protective cover.

[0015] Preferably, a non-contact flow monitor and a non-contact temperature monitor, each connected to a computer, are provided at the slurry outlet of the oil bath heating device.

[0016] Preferably, the cooling device comprises a cooling water tank, in which a cooling water agitator and a cooling coil bracket are provided.

[0017] Preferably, the cooling water tank is cyclically connected to the cooling water tower through a pipeline.

[0018] Preferably, a second non-contact flow monitor and a second non-contact temperature monitor, which are respectively connected to a computer, are provided at the slurry outlet of the cooling device.

[0019] Compared with the prior art, the present invention has the following beneficial effects: the present invention utilizes the high boiling point and fast heat conduction properties of edible rapeseed oil or peanut oil as an oil bath heat energy carrier to heat the platinum-carbon catalyst slurry, promote chemical reactions inside the slurry, and realize the synthesis of the platinum-carbon catalyst; and integrates the precise control of heating, cooling, temperature and flow rate into one system, thereby realizing large-scale, automated synthesis of the platinum-carbon catalyst. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0021] Figure 2 It is a structural schematic diagram of the oil bath heating device in the utility model.

[0022] Figure 3 It is a structural diagram of the cooling device in the utility model.

[0023] Figure 4 It is a temperature control curve diagram of the catalyst slurry in the present utility model.

[0024] Figure 5 This is a schematic diagram of the structure of the central coil pipe bracket of the present utility model. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention will be further specifically described below through embodiments.

[0026] Example: An integrated device for synthesizing platinum-carbon catalysts with automatic temperature control of oil bath heating, referring to Figure 1-5 , including a slurry constant temperature storage tank 1, a conveying pipeline 2, a slurry non-contact variable frequency stepless speed regulation conveying pump 3, an oil bath heating device 4, a cooling device 5, a non-contact temperature monitor 7, a non-contact flow monitor 6, a cooling water tower 11, a water pump 8, a flow monitor 9, a temperature monitor 10, a non-contact temperature monitor 2 15, a non-contact flow monitor 2 14, a slurry storage tank 13 and a control center computer 12.

[0027] The slurry constant temperature storage tank 1 is connected to the conveying pipe 2, and the slurry non-contact variable frequency stepless speed regulation conveying pump 3 is arranged on the conveying pipe 2. The conveying pipe 2 passes through the oil bath heating device 4 and the cooling device 5 in sequence and is connected to the slurry storage tank.

[0028] The slurry non-contact variable frequency stepless speed regulation delivery pump 3, the oil bath heating device 4, the cooling device 5, the non-contact temperature monitor 7, the non-contact flow monitor 6, the water pump 8, the flow monitor 9, the temperature monitor 10, the cooling water tower 11, the non-contact temperature monitor 15, and the non-contact flow monitor 14 are connected to a computer. The computer controls the speed of the variable frequency stepless speed regulation delivery pump 3 and the temperature of the edible rapeseed oil 4c (or peanut oil) in the oil bath heating device 4 through feedback and analysis of temperature and flow data, controls the cooling device 5 to achieve automated production and records the process parameters of the entire production process.

[0029] The slurry constant temperature storage tank 1 is divided into two layers: the inner layer is the slurry storage space 1a, and the outer layer is the circulating constant temperature water 1b, which ensures that the temperature of the slurry entering the oil bath heating device 4 is relatively constant. The slurry in the slurry constant temperature storage tank 1 is transported by the slurry non-contact variable frequency stepless speed regulation pump 3.

[0030] The oil bath heating device 4 consists of an oil tank 4b containing edible rapeseed oil 4c (or peanut oil), a cotton protective cover 4d covering the outside of the oil tank 4b, a heating tube 4e for heating, an oil temperature monitor 4m for monitoring the oil temperature, an oil agitator 4a, an oil bath coil bracket 4h, and a stirring wheel 4f installed on the oil agitator 4a.

[0031] Edible rapeseed oil 4c (or peanut oil) has the highest boiling point among edible oils, reaching 335℃, and has high thermal conductivity. Our slurry heating temperature is around 180℃, so rapeseed oil 4c (or peanut oil) is the best choice.

[0032] The oil bath coil support 4h consists of four vertical plates 4h1, four horizontal plates 4h2, and four cross-shaped fixing plates 4h3, connected by bolts 4h4 to form a quasi-cylindrical frame. Slots 4h5 are located on the inner and outer sides of the vertical plates 4h1. A notch 4h6, slightly smaller than the diameter of the hole 4h5, is cut on the outer side of the slot 4h5. The delivery pipe clips into the slot 4h5 through the notch 4h6, making installation quick and easy. The delivery pipe is attached to the oil bath coil support 4h in two layers, one inside and one outside. The entire structure is immersed in edible rapeseed oil 4c (or peanut oil) to ensure that the slurry is heated and the chemical reaction is complete.

[0033] The oil bath heating device 4 is provided with a non-contact flow monitor 6 and a non-contact temperature monitor 7 at its slurry outlet, both of which are connected to a computer 12. The computer is responsible for analyzing the collected flow rate and temperature and issuing instructions.

[0034] The oil temperature monitor 4m is connected to the computer 12 via a data line, and the computer 12 collects and analyzes the temperature of the edible rapeseed oil 4c (or peanut oil) in real time.

[0035] The computer 12 analyzes the collected edible rapeseed oil 4c (or peanut oil) temperature, slurry flow parameters, and slurry temperature parameters, and then sends instructions to the slurry non-contact variable frequency stepless speed regulation delivery pump 3 and heating tube 4e to adjust the speed of the delivery pump 3 and the heating power parameters of the heating tube 4e to ensure that the slurry flowing through the oil bath heating device 4 completes the chemical reaction at the optimal temperature and optimal reaction time.

[0036] The cooling device 5 is composed of a cooling water tank 5c, cooling water 5d, a water temperature monitor 5b, a cooling water stirrer 5a, stirring blades 5g installed on the cooling water stirrer 5a, and a cooling water coil bracket 5e.

[0037] The cooling water coil support 5e has the same structure as the oil bath coil support 4h. The same delivery pipe 2 is divided into two layers, inner and outer, and is attached to the cooling water pipe support 5e and is immersed in cooling water 5d as a whole.

[0038] Cooling water tank 5c is connected to cooling water tower 11 in a circular fashion via a pipe equipped with a water pump 8. Cooling water 5d is circulated between cooling water tower 11 and cooling water tank 5c by the water pump. Low-temperature water enters cooling water tank 5c, absorbs heat from the slurry, and becomes high-temperature water. The high-temperature water then returns to cooling tower 11, where it dissipates the heat and becomes low-temperature cooling water 5d.

[0039] The water temperature monitor 5b installed in the cooling water tank 5c is connected to the computer 12 via a data line. The computer 12 collects temperature data in real time as a basis for issuing instructions to the water pump 8 and the cooling water tower 11.

[0040] The slurry outlet of cooling device 5 is equipped with a non-contact flow monitor 2 14 and a non-contact temperature monitor 2 15, both of which are connected to computer 12. Computer 12 is responsible for analyzing the collected flow rate and temperature data, which serve as the basis for issuing instructions to the water pump 8 and the water temperature control of cooling tower 9. Computer 12 also compares the parameters of non-contact flow monitor 2 14 with those of non-contact flow monitor 2 6 to determine production failures, shutdown alarms, and shutdown instructions, and issue instructions.

[0041] After being cooled, the catalyst slurry finally enters the slurry storage tank 13 to be transferred to the subsequent process.

[0042] The pipe connecting the cooling water tank 5c and the cooling water tower 11 is equipped with a temperature tester 10 and a flow monitor 9, which are connected to a computer 12 via a data cable. The computer 12 analyzes and calculates the captured temperature and flow rate, and then issues instructions to the cooling water tower 11 and the water pump 8 to adjust the temperature and circulation flow of the water entering the cooling water tank 5c, so that the temperature of the catalyst slurry drops below the required level within a specified time.

[0043] This embodiment, when implemented, includes the following steps:

[0044] Step 1: First, pour the prepared catalyst slurry into the constant temperature slurry storage tank 1. The constant temperature slurry storage tank 1 is divided into two layers: the inner layer is the slurry storage space 1a, and the outer layer is the circulating constant temperature water storage space 1b. The constant temperature water is adjusted to 70℃-80℃ by an external thermostat and circulates in and out of the constant temperature water storage space 1b, ensuring that the catalyst slurry is always maintained at 70℃-80℃.

[0045] Step 2: Start the computer 12 and run the process program of the catalyst product to be produced. This requires manual selection of the relevant program.

[0046] The oil agitator 4a and the cooling water agitator 5g are started to stir the rapeseed oil 4c (or peanut oil) and the cooling water 5d. The computer 12 captures the monitored temperature parameters of the rapeseed oil 4c (or peanut oil) and the cooling water 5d through the temperature monitor 4m and the temperature monitor 5b.

[0047] The heating function of the heating tube 4e is started to heat the rapeseed oil 4c (or peanut oil). When the temperature of the rapeseed oil 4c (or peanut oil) is higher than 200°C, the heating is stopped; when the temperature of the rapeseed oil 4c (or peanut oil) is lower than 180°C, the heating is resumed.

[0048] Water pump 8 is activated to inject cooling water 5d into cooling water tank 5c. Cooling water 5d then flows back through the pipe to cooling tower 11. Based on the data fed back to computer 12 by temperature monitor 10 (which must not exceed 40°C), computer 12 issues an operating instruction to cooling tower 11: if the water temperature is above 40°C, it instructs cooling tower 11 to dissipate heat and cool cooling water 5d until the temperature drops below 40°C, at which point it stops operating.

[0049] Step 3: Computer 12 issues a command to the non-contact variable-frequency stepless speed-regulating slurry delivery pump 3 to deliver the catalyst slurry into the oil bath heating device 4 at the programmed speed. As the catalyst slurry flows through the oil bath heating device 4, it is heated to approximately 170°C and maintained at this temperature for 30 to 50 seconds. A chemical reaction occurs within the catalyst slurry: platinum atoms adsorb onto carbon atoms, forming a platinum-carbon complex.

[0050] After the reacted slurry flows out of the oil bath heating device 4, the computer 12 captures the flow rate and temperature parameters via the non-contact flow monitor 6 and non-contact temperature monitor 7 attached to the delivery pipe 2. These parameters are compared with the specified set parameters to determine whether the reaction temperature and reaction time meet the requirements. If not, an alarm is issued and the speed of the non-contact variable frequency stepless speed control slurry delivery pump 3 is adjusted simultaneously. This ensures that the reaction temperature and reaction time meet the requirements as the catalyst slurry passes through the oil bath heating device 4.

[0051] There are specified requirements for the temperature and reaction time of the chemical reaction inside the catalyst slurry: the temperature is 160℃~180℃, and the reaction time is 30 seconds to 50 seconds at this temperature.

[0052] The portion of the delivery pipe 2 that flows through the oil bath heating device 4 and the cooling device 5 is made of glass or tetrafluoroethylene, which has high acid resistance, alkali resistance and corrosion resistance.

[0053] Step 4: After the catalyst slurry completes the reaction in the oil bath heating device 4, it flows into the cooling device 5 through the delivery pipe 2. When the high-temperature catalyst slurry flows through the cooling device 5, it is cooled to about 50°C (the qualified range is below 60°C). This temperature will be monitored by the non-contact temperature monitor 15 set at the outlet of the cooling device 5, and the data will be transmitted to the computer 12. If the temperature value captured by the computer 12 is higher than 50°C, it will issue a command to adjust the flow rate of the water pump 8 and the outlet water temperature parameters of the cooling tower 11. If the temperature value captured by the computer 12 is higher than 60°C, an alarm will be issued to prompt the staff to intervene in the equipment to solve the problem.

[0054] The catalyst material cooled to the specified temperature (50°C to 60°C) flows into the storage tank 13 and then enters the next "filtration and cleaning" process to obtain a wet catalyst product.

[0055] Step 5: Shutdown. When the data from both the flow meter 6 and the flow monitor 14 reach zero simultaneously, the computer 12 will sound an alarm, prompting personnel to intervene and shut down the machine. If no personnel intervene within three minutes, the computer 12 will issue a command to shut down the machine to protect itself.

[0056] Cooling tower 11 is responsible for dissipating heat and cooling the cooling water 5d. Water pump 8 is responsible for transporting cooling water 5d from cooling tower 11 to cooling water tank 5c, where it returns to cooling tower 11 through a return pipe. Flow monitor 9 and temperature monitor 10 monitor the flow and temperature of cooling water 5d flowing to cooling water tank 5c. Computer 12 uses captured flow and temperature data, combined with temperature parameters fed back by temperature monitor 15, to adjust the cooling tower 11's heat dissipation intensity and the speed of water pump 8. This ensures that the cooling function of cooling device 5 is sufficient to cool the hot catalyst slurry to the specified temperature of 50°C to 60°C.

[0057] The computer 12 records the captured parameters with time as the vertical axis and displays them in the form of a graph curve, so that the operator can make an intuitive judgment.

[0058] The computer 12 will store the captured parameters in a time sequence in the form of a data table for later review and tracing.

[0059] The above embodiments are intended only to illustrate the technical concepts and features of the present invention. Their purpose is to enable those familiar with the art to understand the contents of the present invention and implement them accordingly. They are not intended to limit the scope of protection of the present invention. Any equivalent changes or modifications based on the spirit of the present invention are intended to be included in the scope of protection of the present invention.

Claims

1. An integrated device for synthesizing platinum-carbon catalysts with automatic oil bath heating temperature control, characterized in that: It includes a slurry constant temperature storage tank, a delivery pipeline, a slurry non-contact variable frequency stepless speed regulation delivery pump, an oil bath heating device, a cooling device, a slurry storage tank and a computer. The slurry constant temperature storage tank is connected to the delivery pipeline. The slurry non-contact variable frequency stepless speed regulation delivery pump is provided on the delivery pipeline. The delivery pipeline passes through the oil bath heating device and the cooling device in sequence and then is connected to the slurry storage tank. An oil temperature monitor is provided in the oil bath heating device, and a water temperature monitor is provided in the cooling device. The oil temperature monitor and the water temperature monitor are respectively connected to a computer. The monitoring data of the oil temperature monitor is used to control the temperature of the oil bath heating device, and the monitoring data of the water temperature monitor is used to control the temperature of the cooling device.

2. The integrated device for synthesizing platinum-carbon catalysts with automatic temperature control of oil bath heating according to claim 1, characterized in that: The slurry constant temperature storage tank includes an inner and outer layer, the inner layer is a slurry storage space, and the outer layer is circulating constant temperature water.

3. The integrated device for synthesizing platinum-carbon catalysts with automatic oil bath heating temperature control according to claim 1, characterized in that: The oil bath heating device comprises an oil tank filled with rapeseed oil or peanut oil, wherein a heating pipe, an oil stirrer and an oil bath coil support are arranged in the oil tank.

4. The integrated device for synthesizing platinum-carbon catalysts with automatic oil bath heating temperature control according to claim 3 is characterized in that: The oil bath coil support comprises a plurality of vertical plates distributed in a cylindrical shape, and the inner and outer sides of the vertical plates are respectively provided with slots for clamping into the delivery pipeline.

5. The integrated device for synthesizing platinum-carbon catalysts with automatic oil bath heating temperature control according to claim 3 is characterized in that: A cotton protective cover is provided outside the oil tank.

6. The integrated device for synthesizing platinum-carbon catalysts with automatic temperature control of oil bath heating according to claim 3, characterized in that: A non-contact flow monitor 1 and a non-contact temperature monitor 1, which are respectively connected to a computer, are provided at the slurry outlet of the oil bath heating device.

7. The integrated device for synthesizing platinum-carbon catalysts with automatic oil bath heating temperature control according to claim 1, characterized in that: The cooling device comprises a cooling water tank, in which a cooling water agitator and a cooling coil bracket are arranged.

8. The integrated device for synthesizing platinum-carbon catalysts with automatic oil bath heating temperature control according to claim 7, characterized in that: The cooling water tank is cyclically connected to the cooling water tower through a pipeline.

9. The integrated device for synthesizing platinum-carbon catalysts with automatic oil bath heating temperature control according to claim 7, characterized in that: A second non-contact flow monitor and a second non-contact temperature monitor, which are respectively connected to a computer, are provided at the slurry outlet of the cooling device.

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