High-intensity continuous and stable hydrogen production device, hydrogen production method and application thereof

Abstract

The present invention provides a high-strength continuous and stable hydrogen production device, a hydrogen production method and their applications, relating to the technical field of hydrogen storage devices. The high-strength continuous and stable hydrogen production device includes: a central processing component, having a model component and an operation component, where the model component is used to receive hydrogen production rate data at a predetermined hydrogen production time, and accordingly form a piecewise function with the hydrogen production time X ij as a variable and the hydrogen production rate as the function value. A feeding component, which can receive the feeding time signal for high-strength continuous and stable hydrogen production and perform intermittent or interval automatic feeding by being electrically connected to the operation component; or the feeding component is a water-soluble film material, and the water-soluble film material coats the hydrogen production raw materials. The high-strength continuous and stable hydrogen production device of the present invention solves the problem that it is difficult to maintain continuous, stable and high-strength hydrogen production in the hydrolysis of magnesium hydride in the prior art.

Description

Technical Field

[0001] The present invention relates to the technical field of hydrogen storage devices, and in particular to a high-intensity, continuous and stable hydrogen production device and application thereof, and a high-intensity, continuous and stable hydrogen production method. Background Art

[0002] Due to environmental problems and energy shortages, the development of new clean energy has become a focus. Among them, hydrogen energy, as an ideal green and clean energy, has great development and research value. However, hydrogen energy also has some disadvantages, such as transportation safety. Therefore, it is necessary to choose the storage method of hydrogen. Among them, magnesium metal, as an advantageous hydrogen storage material, has always attracted widespread attention. Under certain conditions, hydrogen and magnesium powder can generate magnesium hydride powder, which has good transportation safety and reduces dependence on transportation methods.

[0003] The hydrolysis of magnesium hydride (MgH2) can be carried out at room temperature, and the amount of hydrogen released is 15.4wt%.

[0004] The reaction equation for hydrolysis is:

[0005] Although the hydrolysis reaction has the advantages of mild reaction conditions and large hydrogen release, the hydrolysis byproduct Mg(OH)2 attached to the surface of MgH2 seriously restricts the progress of the hydrolysis reaction. Summary of the invention

[0006] The inventors have found that there are currently three main solutions to the problem of hydrogen production by hydrolysis of magnesium hydride. The first is to add acid to the solution, but strengthening the acid will corrode the reaction vessel and seriously affect the environment, and weak acid has little effect on the hydrolysis reaction; the second is to add acid salts to the solution, but the hydrolysis effect of acid salts is similar to that of weak acids; the third is to use a composite catalyst, but although the composite catalyst accelerates the hydrolysis reaction of magnesium hydride to a certain extent, it is difficult to maintain continuous stability and high intensity, which has a certain impact on some industries that require stable and high-intensity hydrogen supply. The present invention provides a high-intensity continuous and stable hydrogen production device, which is associated with an intermittent or intermittent automatic feeding component and an operation component to achieve high-intensity continuous and stable hydrogen production.

[0007] A first aspect of the present invention provides a high-intensity, continuous and stable hydrogen production device, the high-intensity, continuous and stable hydrogen production device comprising:

[0008] The central processing component has a model component and a computing component, wherein the model component is used to receive the hydrogen production rate data of the hydrolysis reaction tank under the predetermined hydrogen production time, and form a hydrogen production time x ijA piecewise function is a variable, and the hydrogen production rate is used as the function value; wherein the first piecewise function first rises rapidly and then drops rapidly and changes like a quadratic function, and the second piecewise function drops rapidly and changes like a power function; the computing component can receive the specified high-intensity continuous hydrogen production rate data, and substitute the high-intensity continuous hydrogen production rate data as a new parameter into the above piecewise function to calculate the feeding time of high-intensity continuous and stable hydrogen production; wherein, X ij Indicates the hydrogen production time, min, i indicates the number of times the material is added, i is a natural number and i is not less than 3, and j indicates the time point.

[0009] The feeding component is configured to receive the feeding time by being electrically connected to the operation component, and to intermittently or intermittently automatically feed the hydrogen-producing raw material into the hydrolysis reaction tank according to the feeding time; or the feeding component is configured to be a water-soluble membrane material that coats the hydrogen-producing raw material, and the water resistance time of the water-soluble membrane material in the hydrolysis reaction tank is equivalent to the feeding time, so that the hydrogen-producing raw material coated by the water-soluble membrane material can participate in the hydrolysis hydrogen production reaction after experiencing the feeding time.

[0010] A second aspect of the present invention provides a high-intensity continuous and stable hydrogen production method, wherein the high-intensity continuous and stable hydrogen production method adopts the high-intensity continuous and stable hydrogen production device described above, and comprises the following steps:

[0011] (1) When the ammonium chloride and magnesium chloride react with magnesium hydride within a predetermined concentration range and the reaction temperature is not higher than 100°C, the model component receives a pair of hydrogen production rate data of the hydrolysis reaction tank at a predetermined hydrogen production time, and accordingly forms a hydrogen production time x ij is a piecewise function with a variable and the hydrogen production rate as the function value.

[0012] (2) The computing component receives the specified high-intensity continuous hydrogen production rate data, and substitutes the specified high-intensity continuous hydrogen production rate as a new parameter into the above-mentioned piecewise function to calculate the feeding time for high-intensity continuous stable hydrogen production.

[0013] (3) The feeding component receives a feeding time signal for high-intensity, continuous and stable hydrogen production and automatically releases magnesium hydride raw material into the hydrolysis reaction tank intermittently or intermittently according to the feeding time.

[0014] A third aspect of the present invention provides a hydrogen fuel power system, including a fuel cell, and also includes the above-mentioned high-intensity continuous and stable hydrogen production device connected to the fuel cell and capable of providing hydrogen to the fuel cell.

[0015] Compared with the prior art, the present invention achieves at least one of the following beneficial effects:

[0016] (1) The high-intensity, continuous and stable hydrogen production device of the present invention solves the problem that it is difficult to maintain continuous, stable and high-intensity hydrogen production in the existing hydrolysis hydrogen production.

[0017] (2) The high-intensity continuous and stable hydrogen production device of the present invention realizes high-intensity continuous and stable hydrogen production by associating the intermittent or interval automatic feeding components with the operation components. It has a certain impact on some industries that require stable and high-intensity hydrogen supply.

[0018] (3) The present invention provides a hydrogen fuel power system, including a fuel cell. The high-intensity, continuous and stable hydrogen production device is connected to the fuel cell and can provide high-intensity, continuous and stable hydrogen to the fuel cell, so that the hydrogen fuel power system can operate stably. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0020] Figure 1 The schematic diagram of the principle of the high-intensity continuous and stable hydrogen production device of the present invention is shown;

[0021] Figure 2 A piecewise function shape diagram of a second exemplary embodiment of the present invention is shown;

[0022] Figure 3 A graph of hydrogen production rate according to a second exemplary embodiment of the present invention is shown. DETAILED DESCRIPTION

[0023] In order to more clearly illustrate the overall concept of the present invention, a detailed description is given below in an exemplary manner in conjunction with the accompanying drawings.

[0024] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited to the specific embodiments disclosed below.

[0025] In addition, in the description of the present invention, it should be understood that the orientations or positional relationships indicated by the terms "top", "bottom", "inside", "outside", "axial", "radial", "circumferential", etc. are based on the orientations or positional relationships shown in the accompanying drawings, and are 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, and therefore cannot be understood as a limitation on the present invention.

[0026] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] In the present invention, unless otherwise clearly specified and limited, the first feature "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in an appropriate manner in any one or more embodiments or examples.

[0028] In a first exemplary embodiment of the present invention, a high-intensity, continuous and stable hydrogen production device comprises:

[0029] The central processing component has a model component and a computing component, wherein the model component is used to receive the hydrogen production rate data of the hydrolysis reaction tank under the predetermined hydrogen production time, and form a hydrogen production time x ij A piecewise function is a variable, and the hydrogen production rate is used as the function value; wherein the first piecewise function first rises rapidly and then drops rapidly and changes like a quadratic function, and the second piecewise function drops rapidly and changes like a power function; the computing component can receive the specified high-intensity continuous hydrogen production rate data, and substitute the high-intensity continuous hydrogen production rate data as a new parameter into the above piecewise function to calculate the feeding time of high-intensity continuous and stable hydrogen production; wherein, X ij Indicates the hydrogen production time, min, i indicates the number of times the material is added, i is a natural number and i is not less than 3, and j indicates the time point.

[0030] Specifically, the model component can receive the hydrogen production rate data of the hydrolysis reaction tank at the same feeding at a predetermined hydrogen production time, and form a piecewise function with the hydrogen production time as a parameter (or variable) and the hydrogen production rate as a function value according to the hydrogen production time and the hydrogen production rate. Further, the model component can also receive a series (for example, the number can be more than three, such as 10 to 200) of data pairs consisting of hydrogen production time and hydrogen production rate, and perform regression statistical analysis based on these data pairs to form a piecewise function with the hydrogen production time as a variable and the hydrogen production rate as a function value. The calculation component can receive the specified high-intensity continuous hydrogen production rate data, and substitute the specified high-intensity continuous hydrogen production rate as a new parameter into the above-mentioned piecewise function to calculate the feeding time for high-intensity continuous and stable hydrogen production. For example, the model component receives the hydrogen production time x x of the hydrolysis reaction tank under the first feeding. ij and hydrogen production rate Y ij The data pair (X 11 ,Y 11 )、(X 12 ,Y 12 )、(X 13 ,Y 13 )...(X ij ,Y ij ), and statistical analysis is performed based on these data to form a piecewise function with hydrogen production time as a variable and hydrogen production rate as a function value. The piecewise function is divided into two continuous sections. The overall shape of the first section of the function curve is first a rapid rise and then a rapid decline and changes similar to a quadratic function; the overall shape of the second section of the function curve is a rapid decline and changes similar to a power function decline. The calculation component can receive the specified high-intensity continuous hydrogen production rate data, and substitute the specified high-intensity continuous hydrogen production rate as a new parameter into the above-mentioned piecewise function to calculate the second feeding time for high-intensity continuous and stable hydrogen production. If the feeding basis remains unchanged, the central processing component can calculate the third feeding time, the fourth feeding time...the i-th feeding time based on the first feeding situation. If during the i-th feeding and hydrogen production process, the feed concentration or feed amount corresponding to the corresponding hydrogen production rate is adjusted, the model construction can re-receive the i-th hydrogen production time and hydrogen production rate data pair, and re-form a piecewise function with the hydrogen production time as the variable and the hydrogen production rate as the function value. Then, the calculation component re-receives the specified high-intensity continuous hydrogen production rate data, and substitutes the specified high-intensity continuous hydrogen production rate as a new parameter into the above-mentioned piecewise function to calculate the i+1-th feeding time for high-intensity continuous and stable hydrogen production.

[0031] The feeding component can receive the feeding time signal of high-intensity continuous and stable hydrogen production by being electrically connected to the operation component and intermittently or intermittently automatically feed the hydrogen-producing raw material into the hydrolysis reaction tank according to the feeding time, for example, feeding the magnesium hydride raw material. For example, the feeding component can directly feed the hydrogen-producing raw material according to the feeding time signal. However, the present invention is not limited to this. Or the feeding component is configured to be a water-soluble membrane material coating the hydrogen-producing raw material, and the water-resistant time of the water-soluble membrane material in the hydrolysis reaction tank is equivalent to the feeding time, so that the hydrogen-producing raw material coated with the water-soluble membrane material can participate in the hydrolysis hydrogen production reaction after experiencing the feeding time. Specifically, the water-resistant time is associated with the thickness of the water-soluble membrane material and / or the number of layers of the water-soluble membrane material and is configured to be adjustable according to the feeding time of high-intensity continuous and stable hydrogen production. Specifically, the thickness of the water-soluble membrane material is 10~70µm, and the water-soluble membrane material can be a chitosan material or a polyvinyl alcohol material. Furthermore, the thickness of the water-soluble membrane material can be adjusted according to the high-intensity continuous and stable hydrogen production feeding time calculated by the operation component, or the number of wrapped layers of the water-soluble membrane material can be adjusted, or the thickness and number of layers of the water-soluble membrane material can be adjusted simultaneously. For example, the average water resistance time of a 20µm thick water-soluble membrane material in 40°C water is 1.5 minutes. If the operation component calculates that the next magnesium hydride feed needs to be added after an interval of 1.5 minutes, the magnesium hydride feed coated with a 20µm thick water-soluble membrane material can be added at the same time as the previous feed. In this way, the average value of the hydrogen production rate after 1.5 minutes can be basically consistent with that before. Reference Figure 1 As shown, Figure 1 The schematic diagram of the principle of the high-intensity continuous and stable hydrogen production device of the present invention is shown.

[0032] Specifically, the high-intensity continuous and stable hydrogen production method comprises the following steps:

[0033] (1) When the ammonium chloride and magnesium chloride react with magnesium hydride within a predetermined concentration range and the reaction temperature is not higher than 100°C, the model component receives a pair of hydrogen production rate data of the hydrolysis reaction tank at a predetermined hydrogen production time, and accordingly forms a hydrogen production time x ij The variable is a piecewise function with hydrogen production rate as the function value. The piecewise function is divided into two sections, the first section of the piecewise function rises rapidly first and then drops rapidly and changes like a quadratic function, and the second section of the piecewise function drops rapidly and changes like a power function.

[0034] (2) The computing component receives the specified high-intensity continuous hydrogen production rate data, and substitutes the specified high-intensity continuous hydrogen production rate as a new parameter into the piecewise function in step (1), and calculates the feeding time for high-intensity continuous stable hydrogen production through the computing component.

[0035] (3) The feeding component is configured to receive the feeding time signal by being electrically connected to the computing component, and to intermittently or intermittently automatically discharge the magnesium hydride raw material into the hydrolysis reaction tank according to the feeding time. Alternatively, the feeding component is configured to be a water-soluble membrane material that coats the magnesium hydride raw material, and the water resistance time of the water-soluble membrane material in the hydrolysis reaction tank is equivalent to the feeding time, so that the magnesium hydride raw material coated by the water-soluble membrane material can participate in the hydrolysis hydrogen production reaction after experiencing the feeding time. The water-soluble membrane material will not interfere with the process of hydrolysis hydrogen production.

[0036] In a second exemplary embodiment of the present invention, based on the first exemplary embodiment, a high-intensity continuous and stable hydrogen production method includes the following steps:

[0037] (1) At 30°C, 0.2g of magnesium hydride reacts with 1mol / L of ammonium chloride and 1mol / L of magnesium chloride to produce hydrogen. The ammonium chloride and magnesium chloride act as a composite catalyst and can promote the hydrogen production rate of magnesium hydride. The model component receives the hydrogen production rate data pair of the hydrolysis reaction tank at a certain hydrogen production time under the first feeding, and forms a piecewise function with the hydrogen production time as a variable and the hydrogen production rate as the function value based on the hydrogen production time and the hydrogen production rate. Piecewise function shape reference Figure 2 As shown. Wherein, the piecewise function is as follows:

[0038] 0~2min time period: Y= -274.5X 2 +561.5X;

[0039] 2~15min time period: Y= 73.791X -1.741 ;

[0040] (2) The computing component receives the specified high-intensity continuous hydrogen production rate data of 260-340 mL / min, and substitutes the specified high-intensity continuous hydrogen production rate as a new parameter into the piecewise function of the above step (1), and calculates the i-th addition at (0.005i 2 +1.385i-1.39)min addition can make the hydrogen production rate high and relatively stable. The second addition time is 1.4min, the third addition time is 2.81min, and the fourth addition time is 4.23min.

[0041] (3) The feeding component receives the feeding time signal of high-intensity continuous and stable hydrogen production by being electrically connected to the computing component and automatically feeds hydrogen production raw materials to the hydrolysis reaction tank intermittently or intermittently according to the feeding time calculated by the computing component: the second feeding time is 1.4 minutes, the third feeding time is 2.81 minutes, and the fourth feeding time is 4.23 minutes. Hydrogen production rate curve reference Figure 3 shown.

[0042] In addition, the present invention can be adaptively adjusted according to the hydrogen production rate required in the downstream production needs. For example, the ammonium chloride concentration, magnesium chloride concentration, and reaction temperature can be adjusted, and then the calculation component recalculates the feeding time according to the required high-intensity continuous hydrogen production rate. For example, a hydrogen fuel power system including a fuel cell, the high-intensity continuous and stable hydrogen production device of the present invention can be configured to be connected to the fuel cell to provide hydrogen thereto. The high-intensity continuous and stable hydrogen production device can be adjusted according to the hydrogen production rate required by the fuel cell.

[0043] In a third exemplary embodiment of the present invention, based on the first exemplary embodiment, the feeding assembly further comprises a stirring member, the stirring member is configured to be electrically connected to the computing member and capable of sending a stirring signal to the stirring member. The stirring member can quickly and evenly mix the hydrogen production raw materials to ensure high intensity and continuous stability of the hydrogen production rate.

[0044] In a fourth exemplary embodiment of the present invention, the high-intensity continuous and stable hydrogen production device may further include a power supply circuit based on the structure of the first exemplary embodiment or the third exemplary embodiment. The power supply circuit is configured to be connected to the central processing component or the feeding component, so as to provide power to the relevant device units.

[0045] In a fifth exemplary embodiment of the present invention, the high-intensity continuous and stable hydrogen production device may further include a touch screen based on the structure of the first exemplary embodiment or the third exemplary embodiment. The touch screen is configured to be connected to the central processing component and capable of parameter setting and data and status display, so as to facilitate the setting and adjustment of, for example, reaction temperature, high-intensity continuous hydrogen production rate, etc., and also facilitate the output and display of high-intensity continuous and stable hydrogen production feeding time and whether the system is normal or not.

[0046] The above description is only an embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent substitution, improvement, etc. made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.

Claims

1. A high-intensity, continuous and stable hydrogen production device, characterized in that: The high-intensity continuous and stable hydrogen production device comprises: The central processing component has a model component and a computing component, wherein the model component is used to receive the hydrogen production rate data of the hydrolysis reaction tank under the predetermined hydrogen production time, and form a hydrogen production time x ij A piecewise function is a variable, and the hydrogen production rate is used as the function value; wherein the first piecewise function first rises rapidly and then drops rapidly and changes like a quadratic function, and the second piecewise function drops rapidly and changes like a power function; the computing component can receive the specified high-intensity continuous hydrogen production rate data, and substitute the high-intensity continuous hydrogen production rate data as a new parameter into the above piecewise function to calculate the feeding time of high-intensity continuous and stable hydrogen production; wherein, X ij Indicates the hydrogen production time, min, i indicates the number of times the material is added, i is a natural number and i is not less than 3, j indicates the time point; The feeding component is configured to receive the feeding time by being electrically connected to the operation component, and to intermittently or intermittently automatically feed the hydrogen-producing raw material into the hydrolysis reaction tank according to the feeding time; or the feeding component is configured to be a water-soluble membrane material that coats the hydrogen-producing raw material, and the water resistance time of the water-soluble membrane material in the hydrolysis reaction tank is equivalent to the feeding time, so that the hydrogen-producing raw material coated by the water-soluble membrane material can participate in the hydrolysis hydrogen production reaction after experiencing the feeding time.

2. The high-intensity, continuous and stable hydrogen production device according to claim 1 is characterized in that: The high-intensity, continuous and stable hydrogen production device reacts with magnesium hydride within a predetermined ammonium chloride and magnesium chloride concentration range, and the reaction temperature is not higher than 100°C; the ammonium chloride concentration in the high-intensity, continuous and stable hydrogen production device is not lower than 0.2 mol / L, the magnesium chloride concentration is not lower than 0.5 mol / L, and the hydrogen production rate is 260~340 mL / min.

3. The high-intensity, continuous and stable hydrogen production device according to claim 1 is characterized in that: The thickness of the water-soluble membrane material is 10-70 μm.

4. The high-intensity, continuous and stable hydrogen production device according to claim 1, characterized in that: The water-soluble membrane material is chitosan material or polyvinyl alcohol material.

5. A high-intensity, continuous and stable hydrogen production method, characterized in that: The high-intensity continuous and stable hydrogen production method adopts the high-intensity continuous and stable hydrogen production device according to any one of claims 1 to 4, and the high-intensity continuous and stable hydrogen production method comprises the following steps: (1) When the ammonium chloride and magnesium chloride react with magnesium hydride within a predetermined concentration range and the reaction temperature is not higher than 100°C, the model component receives a pair of hydrogen production rate data of the hydrolysis reaction tank at a predetermined hydrogen production time, and accordingly forms a hydrogen production time x ij is a variable, and a piecewise function with hydrogen production rate as function value; (2) The computing component receives the specified high-intensity continuous hydrogen production rate data, and substitutes the high-intensity continuous hydrogen production rate data as a new parameter into the above-mentioned piecewise function to calculate the feeding time for high-intensity continuous stable hydrogen production; (3) The feeding component receives a feeding time signal for high-intensity, continuous and stable hydrogen production and automatically releases magnesium hydride raw material into the hydrolysis reaction tank intermittently or intermittently according to the feeding time.

6. A hydrogen fuel power system, comprising a fuel cell, characterized in that: It also includes a high-intensity, continuous and stable hydrogen production device as described in any one of claims 1 to 4, which is connected to the fuel cell and can provide hydrogen to the fuel cell.

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