Water model experiment device for natural gas hydrogen production converter

Abstract

The utility model discloses a natural gas hydrogen production converter water model experiment device which comprises a converter body and a support used for fixing the converter body, and at least two air brick installation positions used for installing air bricks are arranged on the lower portion inside the converter body. The air bricks are connected with the air inlet system and are used for introducing air into the furnace body; the heating device is used for heating liquid in the furnace body, and the heating control box is used for controlling the heating device. The method has the advantage that the research cost of the hydrogen production reformer can be obviously reduced on the premise of ensuring the accuracy.

Description

Technical Field

[0001] This utility model relates to an experimental device for hydrogen production in chemical industry, and more particularly to an experimental apparatus for a process of producing hydrogen from natural gas by liquid metal catalytic cracking. Background Technology

[0002] With the continuous advancement of industrial development, human demand for energy has increased dramatically. The excessive carbon dioxide produced by the combustion of conventional fossil fuels has led to rising global temperatures, melting glaciers, and rising sea levels, resulting in severe environmental problems such as global climate change, crop yield reduction, and air pollution. Furthermore, these energy sources are non-renewable and face the danger of depletion. To address the unprecedented pressure of carbon dioxide emissions, the world is gradually moving towards "carbon neutrality" development, vigorously developing clean and renewable energy sources. Among these, hydrogen energy is convenient to produce, highly efficient, and environmentally friendly, making it an ideal secondary energy source that can effectively contribute to carbon reduction and optimize the energy structure. It is a major strategic direction for the global new energy transformation. The EU, the US, Japan, and other countries have proposed their own hydrogen energy plans, and China has also proposed its own carbon peaking and carbon neutrality plan, inevitably ushering in rapid development of hydrogen energy development and utilization in China.

[0003] The basic principle of hydrogen production from molten media natural gas is that methane in natural gas undergoes a direct cracking reaction to produce hydrogen and solid carbon in the presence of a catalyst and under high temperature conditions. The advantages of this process are that, compared to traditional fossil fuel-based hydrogen production, it directly produces solid carbon powder without carbon dioxide emissions; the hydrogen produced can be purified for use in industries such as fuel cells, while the carbon powder can also be used in industrial applications, ensuring the overall economic viability of the process. It has the potential for large-scale application in the future of carbon-free hydrogen production.

[0004] When designing a horizontal converter based on the fundamental principle of hydrogen production from molten natural gas, it is necessary to study the state of the gas after it is injected into the metal and the temperature of the liquid region. Currently, experiments are mainly conducted through the production of prototypes, which has the following disadvantages: 1) Prototype production is time-consuming and costly; 2) Hydrogen converters are chemical equipment, and the experimental site is easily restricted; 3) Hydrogen converters require high temperatures to operate, and the risk of hydrogen leakage must be considered, therefore, complete safety equipment must be provided during experiments, further increasing the time cost. Utility Model Content

[0005] To significantly reduce the research cost of hydrogen production converters while ensuring accuracy, this invention provides a water model experimental device for a natural gas hydrogen production converter.

[0006] The technical solution adopted by this utility model to solve its technical problem is: a water model experimental device for a natural gas hydrogen conversion furnace, including a furnace body and a support for fixing the furnace body. The lower part of the furnace body is provided with at least two permeable brick mounting positions for installing permeable bricks. The permeable bricks are connected to the air intake system through an air intake connection pipe for introducing air into the furnace body. It also includes a heating device for heating the liquid inside the furnace body and a heating control box for controlling the heating device.

[0007] As a further improvement of this utility model, a thermal sensor for detecting liquid temperature is provided inside the furnace body.

[0008] As a further improvement of this utility model, the furnace body is made of a transparent material to facilitate the observation of bubble diffusion in the experimental area. For example, polymethyl methacrylate can be used as the furnace body material.

[0009] More preferably, a high-speed camera for observing bubble diffusion in the experimental area inside the furnace is installed on the outer wall of the furnace body. Even more preferably, the high-speed camera is detachably connected to the furnace body via a mounting bracket. This design not only facilitates the storage and installation of the camera but also allows for changes in the camera's observation position by setting mounting brackets in different orientations, thus providing greater adaptability to various operating conditions.

[0010] The beneficial effects of this invention are: a) It is less expensive than existing hydrogen production devices. b) The furnace exterior is made of transparent material, facilitating observation of the furnace interior. c) This device can simulate liquid metal with water and methane and hydrogen with air; therefore, there is no need to worry about flammable and explosive gas leaks during the experiment, nor is a high temperature above 1000 degrees Celsius required, making the experiment relatively safe. d) Experimental parameters, including the installation position and air intake of the permeable bricks, and heating power, can be adjusted relatively easily. e) The experimental device can be fine-tuned at a lower cost to simulate cases under other parameters. For example, the installation structure of the permeable bricks at the furnace bottom can be changed, the installation position of the permeable bricks or the jet angle can be adjusted; or the heating device can be changed to experiment with other heating methods. f) This device can be used to simulate the same case using numerical simulation, and the results of numerical simulation and experiment can be compared to verify the accuracy of the numerical simulation. When the results of the two are close enough, numerical simulation can be used to guide the design. That is, numerical simulation is used to simulate the temperature field of the molten metal and the diffusion of bubbles under various parameters such as furnace shape, size, air permeability, and air intake. After obtaining good results, an experimental device can be designed for further verification. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of this utility model.

[0012] Figure 2 yes Figure 1 Top view.

[0013] Figure 3 yes Figure 1 A 3D view (the intake system is not shown in the image).

[0014] The markings in the diagram are: 1-furnace body, 2-heating device, 3-support, 4-permeable brick, 5-permeable brick mounting position, 6-high-speed camera, 7-heating control box, 8-air inlet connection pipe, 9-air inlet system. Detailed Implementation

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0016] like Figure 1 , Figure 2 As shown, the present invention discloses a water model experimental device for a natural gas-to-hydrogen conversion furnace. The device includes a furnace body 1 and a support 3 for fixing the furnace body 1. Nine permeable brick mounting positions 5 are provided in the lower part of the furnace body 1 for mounting permeable bricks 4. The permeable bricks 5 are connected to an air intake system 9 via an air intake connection pipe 8 to introduce air into the furnace body 1. The device also includes a heating device 2 for heating the liquid inside the furnace body and a heating control box 7 for controlling the heating device. A thermal sensor for detecting the liquid temperature is installed inside the furnace body 1. The furnace body 1 is made of polymethyl methacrylate (PMMA), and a high-speed camera 6 is mounted on its outer wall to observe the bubble diffusion in the experimental area inside the furnace body 1. The high-speed camera 6 is detachably connected to the furnace body 1 via a mounting bracket.

[0017] The practical method for the experimental setup of the water model for the natural gas hydrogen production converter is as follows:

[0018] a) Install the bracket, furnace body and heating device, and install breathable bricks and heat sensors in the required locations.

[0019] b) Adjust the parameters of the high-speed camera to enable it to clearly record the bubble diffusion in the experimental area.

[0020] c) Inject an appropriate amount of water into the furnace to simulate molten metal.

[0021] d) Set the air intake and heating power parameters for the permeable bricks.

[0022] e) Air is injected into the furnace through permeable bricks, and a high-speed camera is used to record the movement of bubbles and the mixing of gas with liquid inside the furnace. At the same time, a thermal sensor is used to detect temperature changes at certain designated points.

[0023] f) Analyze the experimental data, compare the results of numerical simulation and experiment, and verify the accuracy of numerical simulation. When the results of the two are close enough, numerical simulation can be used to guide the design. That is, numerical simulation is used to simulate the temperature field of the molten metal and the bubble diffusion under various parameters—furnace shape, size, air permeability position, air intake, etc.—and after obtaining good results, an experimental device can be designed for further verification.

Claims

1. A water model experiment device for a hydrogen reformer of natural gas, characterized in that: It includes a furnace body (1) and a bracket (3) for fixing the furnace body (1). The lower part of the furnace body (1) is provided with at least two permeable brick mounting positions (5) for installing permeable bricks (4). The permeable bricks (4) are connected to the air intake system (9) through an air intake connection pipe (8) for introducing air into the furnace body (1). It also includes a heating device (2) for heating the liquid inside the furnace body and a heating control box (7) for controlling the heating device.

2. The natural gas hydrogen reformer water model experiment device according to claim 1, characterized in that: The furnace body (1) is equipped with a thermal sensor for detecting the temperature of the liquid.

3. The water model experiment device for natural gas hydrogen reformer according to claim 1, characterized in that: The furnace body (1) is made of a transparent material.

4. The natural gas hydrogen reformer water model experiment device according to claim 3, characterized in that: The furnace body (1) is made of polymethyl methacrylate.

5. The water model experiment device for natural gas hydrogen reformer according to claim 3, characterized in that: A high-speed camera (6) is installed on the outer wall of the furnace body (1) to observe the diffusion of bubbles in the experimental area inside the furnace body (1).

6. The natural gas hydrogen reformer water model experiment device according to claim 5, characterized in that: The high-speed camera (6) is detachably connected to the furnace body (1) via a mounting bracket.

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