Method and device for producing hydrogen by intensifying dark fermentation with thermally modified tourmaline

Abstract

The invention belongs to the technical field of biomass dark fermentation hydrogen production, and particularly relates to a method and a device for producing hydrogen by intensifying dark fermentation through thermal modified tourmaline, and the method for producing hydrogen by intensifying dark fermentation through thermal modified tourmaline comprises the following steps: step 1, preparing a dark fermentation process culture medium; 2, dissolving the inoculated sludge into deionized water to prepare sewage, and carrying out heat treatment; step 3, mixing the culture medium, the sewage, the straw and the thermal modified tourmaline to prepare a mixed solution, and performing fermentation preparation; 4, adjusting the pH value of the mixed solution, and starting dark fermentation; and 5, after the primary hydrogen production is ended, adjusting the pH value of the mixed solution again, and starting secondary fermentation until the fermentation is ended. The invention further discloses a thermal modified tourmaline reinforced dark fermentation hydrogen production device applying the method. The tourmaline which is a self-generating field material is applied to dark fermentation, flora reproduction is accelerated by utilizing an electromagnetic enhancement principle, straw biomass can be efficiently degraded, and hydrogen generation is accelerated.

Description

Technical Field

[0001] The invention belongs to the technical field of dark fermentation hydrogen production by biomass, and in particular relates to a method and a device for dark fermentation hydrogen production by thermally modified tourmaline. Background Art

[0002] As fossil energy becomes increasingly scarce, carbon emissions are also rising, and resource depletion and environmental pollution have become two major problems. Dark fermentation hydrogen production technology can use biomass resources to produce hydrogen, which is an effective way to achieve clean energy.

[0003] The main methods for preparing hydrogen include hydrogen production from fossil energy, hydrogen production from water electrolysis, hydrogen production from chemical by-products, and the emerging biological hydrogen production and solar hydrogen production. Today, most of my country's hydrogen is produced by fossil fuels and water electrolysis. However, this traditional hydrogen production process has problems such as high energy consumption, high cost, and fluctuations in hydrogen production. In the dark fermentation process of straw biomass, the principle of dark fermentation hydrogen production technology is to use hydrogen-producing microorganisms to consume organic matter in biomass such as acetic acid, propionic acid, butyric acid, etc. to produce hydrogen. In recent years, it has attracted much attention due to its low energy consumption, low cost, and environmental friendliness.

[0004] However, the current research on dark fermentation hydrogen production technology is not in-depth, and there is still a lack of processes and equipment that can achieve dark fermentation hydrogen production. Therefore, we propose a method and device for dark fermentation hydrogen production enhanced by thermally modified tourmaline to solve the above problems. Summary of the invention

[0005] The object of the present invention is to provide a method and device for enhancing dark fermentation hydrogen production by thermally modified tourmaline to solve the above problems.

[0006] To achieve the above object, the present invention provides the following solutions:

[0007] The method for producing hydrogen by dark fermentation enhanced by thermally modified tourmaline comprises the following steps:

[0008] Step 1, preparing a dark fermentation process medium;

[0009] Step 2, dissolving the seeded sludge into deionized water to prepare sewage and performing heat treatment;

[0010] Step 3, mixing the culture medium, sewage, straw and thermally modified tourmaline to prepare a mixed solution for fermentation;

[0011] Step 4, adjusting the pH value of the mixed solution and starting dark fermentation;

[0012] Step 5: After the first hydrogen production is terminated, the pH value of the mixed solution is adjusted again, and the secondary fermentation is started until the fermentation is completed.

[0013] Preferably, in step 1, the culture medium composition (g / L) is: 10 tryptone, 10 beef extract, 5 glucose, 5 sodium chloride, 3 yeast extract, 3 sodium acetate, 1 starch, and 0.5 L-cysteine ​​salt.

[0014] Preferably, in the step 2, every 20 g of the inoculated sludge is dissolved in 1 L of deionized water to prepare the sewage, and the sewage is thermally pretreated at 95° C. for 40 minutes to remove competing bacteria in the sewage and increase the relative proportion of hydrogen-producing bacteria.

[0015] Preferably, in the step three, the culture medium and the sewage are added in a ratio of 1:1, 30 g / L of the straw and 6.2 g / L of the thermally modified tourmaline are taken, and the mixed solution is formed after mixing.

[0016] Preferably, in step 4, when dark fermentation begins, the pH value of the mixed solution is 7.0±0.1.

[0017] Preferably, in step five, during the secondary fermentation, the pH value of the mixed solution is 6.5.

[0018] Preferably, the steps of making the thermally modified tourmaline include:

[0019] In the first step, the tourmaline was crushed into 20 μm using a nano grinder;

[0020] In the second step, the temperature was increased at a rate of 10°C / min in an air atmosphere muffle furnace and maintained at a modification temperature of 400°C for 2 hours.

[0021] A device for producing hydrogen by dark fermentation enhanced by thermally modified tourmaline, based on the above-mentioned method for producing hydrogen by dark fermentation enhanced by thermally modified tourmaline, comprises:

[0022] A pretreatment reaction component, used for treating the inoculated sludge to produce the sewage;

[0023] A dark fermentation hydrogen production component, used for mixing the mixed culture medium, the sewage, the straw and the thermally modified tourmaline and performing dark fermentation hydrogen production;

[0024] A conveying and cooling component is used to convey the sewage generated by the pretreatment reaction component to the dark fermentation hydrogen production component to be mixed with the mixed culture medium, the straw and the heat-modified tourmaline, and to cool the sewage during the conveying process;

[0025] A control component is used to control the temperature in the pretreatment reaction component and the temperature and pH value in the dark fermentation hydrogen production component.

[0026] Preferably, the pretreatment reaction assembly comprises a pretreatment reaction chamber, the pretreatment reaction chamber is wrapped with an insulation layer, the insulation layer is wrapped with a pretreatment reactor shell, the top two sides of the pretreatment reaction chamber are respectively connected with a feed inlet and a gas outlet, the bottom of the pretreatment reaction chamber is fixedly connected with a U-shaped heating device, a stirring device is provided in the pretreatment reaction chamber, a temperature sensor is provided in the pretreatment reaction chamber, a temperature controller for controlling the temperature is provided in the pretreatment reaction chamber, and one side of the bottom of the pretreatment reaction chamber is connected with an inlet with a discharge port. The material end, the discharge end of the discharge port is connected to the conveying and cooling component, the conveying and cooling component includes a peristaltic pump, the feed end of the peristaltic pump is connected to the discharge port, the discharge end of the peristaltic pump is connected to the feed end of the solid-liquid separator, the liquid outlet end of the solid-liquid separator is connected to the feed end of the dark fermentation hydrogen production component through a condenser, the discharge end of the solid-liquid separator is connected to the pretreatment reaction chamber through a reflux port, and the U-shaped heating device, the peristaltic pump, the temperature sensor and the stirring device are electrically connected to the control component.

[0027] Preferably, the dark fermentation hydrogen production component comprises a dark fermentation reaction chamber, the dark fermentation reaction chamber is wrapped with a dark fermentation reactor shell, and another insulation layer is provided between the dark fermentation reactor shell and the dark fermentation reaction chamber;

[0028] A nickel foam cylinder is provided in the center of the dark fermentation reaction chamber, and the thermally modified tourmaline is filled in the nickel foam cylinder;

[0029] The dark fermentation reaction chamber is provided with another temperature sensor, a pH sensor and an ORP sensor electrically connected to the control component;

[0030] The dark fermentation reaction chamber is connected to the discharge end of the condenser through a substrate feed port, a bottom side of the dark fermentation reaction chamber is connected to a biogas residue discharge port, and a middle side of the dark fermentation reaction chamber is connected to a hydrogen-producing bacteria inoculation port;

[0031] The top of the dark fermentation reaction chamber is provided with a pH automatic adjustment device for adjusting the pH value in the dark fermentation reaction chamber and another temperature controller for adjusting the temperature in the dark fermentation reaction chamber. The dark fermentation reaction chamber is also connected with double ports.

[0032] Compared with the prior art, the present invention has the following advantages and technical effects:

[0033] The present invention puts the high-temperature modified tourmaline into the dark fermentation hydrogen production system, which can promote the rapid degradation of biomass resources, enhance the efficiency of electron transfer between bacteria species, and greatly increase the biohydrogen production.

[0034] Compared with the prior art, the present invention dissolves the inoculated sludge into deionized water to prepare sewage and performs heat treatment to eliminate hydrogen-consuming bacteria in the sludge and accelerate the degradation of straw. The present invention applies tourmaline, a material with a self-generating field, to dark fermentation, thermally modifies it, gives it magnetism, and accelerates the reproduction of bacterial colonies using the principle of electromagnetic enhancement, breaking the current bottlenecks of short dark fermentation gas production cycle and low hydrogen production, efficiently degrading straw biomass and accelerating hydrogen generation. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative labor:

[0036] Figure 1 It is a schematic diagram of the structure of the present invention;

[0037] Figure 2 It is a top view of the structure of the present invention;

[0038] Figure 3 is the XRD pattern of the thermally modified tourmaline of the present invention at 400°C;

[0039] Among them, 1. pretreatment reaction chamber; 2. pretreatment reactor shell; 3. insulation layer; 4. feed port; 5. temperature sensor; 6. stirring device; 7. gas outlet; 8. reflux port; 9. U-shaped heating device; 10. discharge port; 11. peristaltic pump; 12. solid-liquid separator; 13. condenser; 14. substrate feed port; 15. hydrogen-producing bacteria inoculation port; 16. dark fermentation reaction chamber; 17. dark fermentation reactor shell; 18. thermally modified tourmaline; 19. pH sensor; 20. double port; 21. temperature controller; 22. sludge discharge port; 23. ORP sensor; 24. pretreatment control component; 25. dark fermentation device control component; 26. pH automatic adjustment device; 27. power supply; 28. device controller; 29. ​​nickel foam cylinder. DETAILED DESCRIPTION

[0040] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0041] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0042] Reference Figures 1 to 3 The present invention discloses a method for producing hydrogen by dark fermentation enhanced by thermally modified tourmaline, comprising the following steps:

[0043] Step 1, preparing a dark fermentation process medium;

[0044] Step 2, dissolving the seeded sludge into deionized water to prepare sewage and performing heat treatment;

[0045] Step 3: Mixing the culture medium, sewage, straw and thermally modified tourmaline 18 to prepare a mixed solution for fermentation;

[0046] Step 4: adjusting the pH value of the mixed solution and starting dark fermentation;

[0047] Step 5: When the first hydrogen production is terminated, the pH value of the mixed solution is adjusted again to start the secondary fermentation until the fermentation is completed.

[0048] The present invention utilizes thermally modified tourmaline gas to enhance the dark fermentation hydrogen production process, and has five principles. First, tourmaline is a mineral rich in various elements such as Fe, Mg, Al, Ti, etc. It is inexpensive, has a porous structure, and has a huge specific surface area, which can provide a stable production environment for the bacteria. Second, tourmaline can spontaneously generate an electric field, which can accelerate the electron transfer between bacteria, and is the key reason for enhancing dark fermentation hydrogen production. When the temperature and pressure of the environment in which the tourmaline crystal is located change, relative displacement occurs between the charged particles in the crystal, the positive and negative charge centers separate, and the total electric moment of the crystal changes, resulting in the generation of polarized charge. Third, in an oxygen-rich and high-temperature environment, the Fe in tourmaline 2+ , Fe 3+ It changes dynamically, making tourmaline rich in magnetism and strengthening its role in electron transfer between bacteria. Fourth, the self-generated electric field generated by the polarization of tourmaline makes it have good adsorption properties for heavy metal ions. Fifth, the water molecules around tourmaline are hydrolyzed into alkaline hydrated hydroxyl ions under the action of the self-generated electric field, making the acidic water transition to neutral water.

[0049] The present invention puts the high-temperature modified tourmaline into the dark fermentation hydrogen production system, which can promote the rapid degradation of biomass resources, enhance the efficiency of electron transfer between bacteria species, and greatly increase the biohydrogen production.

[0050] Compared with the prior art, the present invention has the following advantages:

[0051] (1) The present invention dissolves the inoculated sludge into deionized water to prepare sewage and performs heat treatment to eliminate hydrogen-consuming bacteria in the sludge and accelerate the degradation of straw.

[0052] (2) The present invention applies tourmaline, a material with a self-generating field, to dark fermentation, and thermally modifies it to give it magnetism. The electromagnetic enhancement principle is used to accelerate the reproduction of the bacterial colony, breaking the current bottlenecks of short dark fermentation gas production cycle and low hydrogen production, efficiently degrading straw biomass and accelerating hydrogen generation.

[0053] The scheme was further optimized. In step 1, the culture medium composition g / L was: 10 tryptone, 10 beef extract, 5 glucose, 5 sodium chloride, 3 yeast extract, 3 sodium acetate, 1 starch, and 0.5 L-cysteine ​​salt.

[0054] To further optimize the scheme, in step 2, every 20 g of inoculated sludge was dissolved in 1 L of deionized water to prepare sewage, and the sewage was thermally pretreated at 95° C. for 40 minutes to remove competing bacteria in the sewage and increase the relative proportion of hydrogen-producing bacteria.

[0055] By using 95°C heat pretreatment for 40 minutes to remove competing bacteria in the sewage and increase the relative proportion of hydrogen-producing bacteria, the negative effects of hydrogen-consuming bacteria on dark fermentation hydrogen production can be eliminated and the straw pretreatment effect can be improved.

[0056] To further optimize the scheme, in step three, culture medium and sewage were added in a ratio of 1:1, 30 g / L of straw and 6.2 g / L of thermally modified tourmaline 18 were taken, and mixed to form a mixed solution.

[0057] The scheme was further optimized. In step 4, when dark fermentation started, the pH value of the mixed solution was 7.0±0.1.

[0058] The solution was further optimized. In step five, during the secondary fermentation, the pH value of the mixed solution was 6.5.

[0059] Further optimizing the scheme, the steps of making the thermally modified tourmaline 18 include:

[0060] In the first step, the tourmaline black crystals were crushed into 20 μm using a nano grinder;

[0061] In the second step, the temperature was increased at a rate of 10°C / min in an air atmosphere muffle furnace and maintained at a modification temperature of 400°C for 2 hours.

[0062] A device for producing hydrogen by dark fermentation enhanced by thermally modified tourmaline, based on the above-mentioned method for producing hydrogen by dark fermentation enhanced by thermally modified tourmaline, comprises:

[0063] A pretreatment reaction component for treating wastewater generated by inoculated sludge;

[0064] A dark fermentation hydrogen production component is used to mix culture medium, sewage, straw and thermally modified tourmaline and perform dark fermentation hydrogen production;

[0065] A conveying and cooling component is used to convey the sewage generated by the pretreatment reaction component to the dark fermentation hydrogen production component to be mixed with the mixed culture medium straw and the heat-modified tourmaline and to cool the sewage during the conveying process;

[0066] The control component is used to control the temperature in the pretreatment reaction component and the temperature and pH value in the dark fermentation hydrogen production component.

[0067] When in use, inoculated sludge and a certain amount of water are placed in the pretreatment reaction component, the sludge is dissolved in deionized water to be configured into sewage and heat-treated, mixed culture medium, straw and heat-modified tourmaline are placed in the dark fermentation hydrogen production component, and the sewage is cooled by the conveying cooling component and then input into the dark fermentation hydrogen production component to mix with the mixed culture medium straw and heat-modified tourmaline, and the dark fermentation process can be started. During this period, the temperature in the pretreatment reaction component is controlled by the control component to increase the relative proportion of hydrogen-producing bacteria and eliminate the negative effects of hydrogen-consuming bacteria on dark fermentation hydrogen production. The fermentation hydrogen production process can be controlled by controlling the temperature and pH value in the dark fermentation hydrogen production component by the control component.

[0068] Further optimization scheme, the pretreatment reaction component includes a pretreatment reaction chamber 1, the pretreatment reaction chamber 1 is wrapped with an insulation layer 3, the insulation layer 3 is wrapped with a pretreatment reactor shell 2, the top two sides of the pretreatment reaction chamber 1 are respectively connected with a feed port 4 and a gas outlet 7, the bottom of the pretreatment reaction chamber 1 is fixed with a U-shaped heating device 9, the pretreatment reaction chamber 1 is provided with a stirring device 6, the pretreatment reaction chamber 1 is provided with a temperature sensor 5, the pretreatment reaction chamber 1 is provided with a temperature controller 21 for controlling the temperature, and the bottom side of the pretreatment reaction chamber 1 is connected with an outlet The feed end of the material port 10 and the discharge end of the discharge port 10 are connected to the conveying and cooling component, and the conveying and cooling component includes a peristaltic pump 11. The feed end of the peristaltic pump 11 is connected to the discharge port 10, and the discharge end of the peristaltic pump 11 is connected to the feed end of the solid-liquid separator 12. The liquid outlet end of the solid-liquid separator 12 is connected to the feed end of the dark fermentation hydrogen production component through the condenser 13, and the discharge end of the solid-liquid separator 12 is connected to the pretreatment reaction chamber 1 through the reflux port 8. The U-shaped heating device 9, the peristaltic pump 11, the temperature sensor 5 and the stirring device 6 are electrically connected to the control component.

[0069] In a further optimized solution, the dark fermentation hydrogen production component includes a dark fermentation reaction chamber 16, the dark fermentation reaction chamber 16 is wrapped with a dark fermentation reactor shell 17, and another insulation layer 3 is provided between the dark fermentation reactor shell 17 and the dark fermentation reaction chamber 16;

[0070] A nickel foam cylinder 29 is provided in the center of the dark fermentation reaction chamber 16, and the thermally modified tourmaline 18 is filled in the nickel foam cylinder 29;

[0071] Another temperature sensor 5, a pH sensor 19 and an ORP sensor 23 electrically connected to the control assembly are provided in the dark fermentation reaction chamber 16;

[0072] The dark fermentation reaction chamber 16 is connected to the discharge end of the condenser 13 through the substrate feed port 14, the bottom side of the dark fermentation reaction chamber 16 is connected to the biogas residue discharge port 22, and the middle side of the dark fermentation reaction chamber 16 is connected to the hydrogen-producing bacteria inoculation port 15;

[0073] The top of the dark fermentation reaction chamber 16 is provided with a pH automatic adjustment device 26 for adjusting the pH value in the dark fermentation reaction chamber 16 and another temperature controller 21 for adjusting the temperature in the dark fermentation reaction chamber 16 . The dark fermentation reaction chamber 16 is also connected with a double port 20 .

[0074] The control component includes a power supply 27, a device controller 28, a pretreatment control component 24 and a dark fermentation device control component 25.

[0075] When in use, the inoculated sludge composed of straw biomass and sludge cow dung is put into the pretreatment reaction chamber 1 through the feed inlet 4 .

[0076] The pretreatment control component 24, peristaltic pump 11, solid-liquid separator 12, condenser 13 and dark fermentation device control component 25 are started by the device controller 28 and the power supply 27, and preheated for 10 minutes to increase the temperature in the pretreatment reaction chamber 1 and the dark fermentation reaction chamber 16.

[0077] The U-shaped heating device 9 is started to heat the pretreatment reaction chamber 1 through the pretreatment control component 24, and the temperature of the pretreatment reaction chamber 1 is controlled at 95±1°C through the temperature sensor 5 and the corresponding temperature controller 21 for 30 minutes.

[0078] The generated gas is discharged through the gas outlet 7 .

[0079] The solid-liquid mixture is passed into the solid-liquid separator 12 through the discharge port 10 by means of a peristaltic pump 11 .

[0080] The solid flows back to the pretreatment reaction chamber 1 through the reflux port 8 , and the liquid passes through the condenser 13 and enters the dark fermentation reaction chamber 16 through the substrate feed port 14 .

[0081] The heat-modified tourmaline 18 is placed in a nickel foam cylinder 29 and then placed in a dark fermentation reaction chamber 16 .

[0082] The temperature sensor 5 , the temperature controller 21 , the ORP sensor 23 , the pH sensor 19 , and the pH automatic adjustment device 26 are started by the dark fermentation device control component 25 and the power supply 27 .

[0083] The temperature begins to rise, and the process of thermally modified tourmaline-enhanced hydrogen production begins.

[0084] The temperature in the dark fermentation reaction chamber 16 is controlled at 36±1° C. by the temperature controller 21 and the temperature sensor 5. In addition, the straw may be heat-treated in advance to break the hydrogen bonds of the straw lignin.

[0085] The heat treatment of the straw can be carried out in the dark fermentation reaction chamber 16, and the heat treatment temperature is 95°C.

[0086] The pH sensor 19 transmits a signal to the device controller 28, and the pH automatic adjustment device 26 is used to control the pH in the dark fermentation reaction chamber 16 to be between 6.5 and 7.2.

[0087] The generated hydrogen gas and supplementary culture medium are discharged and replenished through the double port 20.

[0088] After the fermentation of biomass such as straw is completed, the biogas residue and the like are discharged through the biogas residue discharge port 22 .

[0089] The thermally modified tourmaline enhanced dark fermentation hydrogen production device has a simple structure, is easy to operate, does not require special equipment, and saves energy. By utilizing the technology of wrapping the thermally modified tourmaline with foam nickel, it not only ensures the hydrogen production efficiency, but also provides a means of recyclable additives, ensuring the economy and environmental protection of producing renewable energy.

[0090] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, 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 do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0091] The embodiments described above are only descriptions of the preferred modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the protection scope determined by the claims of the present invention.

Claims

1. A method for producing hydrogen by dark fermentation enhanced by thermally modified tourmaline, characterized in that: The steps include: Step 1, preparing a dark fermentation process medium; Step 2, heat-treating the inoculated sludge and dissolving it in deionized water to prepare sewage; Step 3, mixing the culture medium, sewage, straw and thermally modified tourmaline (18) to prepare a mixed solution for fermentation; Step 4, adjusting the pH value of the mixed solution and starting dark fermentation; Step 5: After the first hydrogen production is terminated, the pH value of the mixed solution is adjusted again, and the secondary fermentation is started until the fermentation is completed.

2. The method for producing hydrogen by dark fermentation of thermally modified tourmaline according to claim 1, characterized in that: In the step 1, the culture medium composition (g / L) is: 10 tryptone, 10 beef extract, 5 glucose, 5 sodium chloride, 3 yeast extract, 3 sodium acetate, 1 starch, and 0.5 L-cysteine ​​salt.

3. The method for producing hydrogen by dark fermentation of thermally modified tourmaline according to claim 1, characterized in that: In the step 2, 20 g of the inoculated sludge is dissolved in 1 L of deionized water to prepare the sewage, and the sewage is thermally pretreated at 95° C. for 40 minutes to remove competing bacteria in the sewage and increase the relative proportion of hydrogen-producing bacteria.

4. The method for producing hydrogen by dark fermentation enhanced by thermally modified tourmaline according to claim 1, characterized in that: In the step three, the culture medium and the sewage are added in a ratio of 1:1, 30 g / L of the straw and 6.2 g / L of the thermally modified tourmaline (18) are added, and the mixed solution is formed after mixing.

5. The method for producing hydrogen by dark fermentation enhanced by thermally modified tourmaline according to claim 1, characterized in that: In the step 4, when dark fermentation begins, the pH value of the mixed solution is 7.0±0.

1.

6. The method for producing hydrogen by enhanced dark fermentation of thermally modified tourmaline according to claim 1, characterized in that: In the step 5, during the secondary fermentation, the pH value of the mixed solution is 6.

5.

7. The method for producing hydrogen by dark fermentation enhanced by thermally modified tourmaline according to claim 1, characterized in that: The production steps of the thermally modified tourmaline (18) include: In the first step, the tourmaline was crushed into 20 μm using a nano grinder; In the second step, the temperature was increased at a rate of 10°C / min in an air atmosphere muffle furnace and maintained at a modification temperature of 400°C for 2 hours.

8. A device for producing hydrogen by dark fermentation enhanced by thermally modified tourmaline, based on the method for producing hydrogen by dark fermentation enhanced by thermally modified tourmaline according to any one of claims 1 to 7, characterized in that: include: A pretreatment reaction component, used for treating the inoculated sludge to produce the sewage; A dark fermentation hydrogen production component, used for mixing the mixed culture medium, the sewage, the straw and the thermally modified tourmaline and performing dark fermentation hydrogen production; A conveying and cooling component is used to convey the sewage generated by the pretreatment reaction component to the dark fermentation hydrogen production component to be mixed with the mixed culture medium, the straw and the heat-modified tourmaline, and to cool the sewage during the conveying process; A control component is used to control the temperature in the pretreatment reaction component and the temperature and pH value in the dark fermentation hydrogen production component.

9. The device for producing hydrogen by dark fermentation enhanced by thermally modified tourmaline according to claim 8, characterized in that: The pretreatment reaction assembly comprises a pretreatment reaction chamber (1), the pretreatment reaction chamber (1) is wrapped with a heat preservation layer (3), the heat preservation layer (3) is wrapped with a pretreatment reactor shell (2), the top two sides of the pretreatment reaction chamber (1) are respectively connected with a feed port (4) and a gas outlet (7), the bottom of the pretreatment reaction chamber (1) is fixedly connected with a U-shaped heating device (9), the pretreatment reaction chamber (1) is provided with a stirring device (6), the pretreatment reaction chamber (1) is provided with a temperature sensor (5), the pretreatment reaction chamber (1) is provided with a temperature controller (21) for controlling the temperature, and the bottom side of the pretreatment reaction chamber (1) is connected with a feed port (4) and a gas outlet (7). The discharge end of the discharge port (10) is connected to the conveying and cooling component, the conveying and cooling component comprises a peristaltic pump (11), the feed end of the peristaltic pump (11) is connected to the discharge port (10), the discharge end of the peristaltic pump (11) is connected to the feed end of a solid-liquid separator (12), the liquid discharge end of the solid-liquid separator (12) is connected to the feed end of the dark fermentation hydrogen production component through a condenser (13), the discharge end of the solid-liquid separator (12) is connected to the pretreatment reaction chamber (1) through a reflux port (8), and the U-shaped heating device (9), the peristaltic pump (11), the temperature sensor (5) and the stirring device (6) are electrically connected to the control component.

10. The device for producing hydrogen by dark fermentation enhanced by thermally modified tourmaline according to claim 9, characterized in that: The dark fermentation hydrogen production component comprises a dark fermentation reaction chamber (16), the dark fermentation reaction chamber (16) is wrapped with a dark fermentation reactor shell (17), and another insulation layer (3) is provided between the dark fermentation reactor shell (17) and the dark fermentation reaction chamber (16); A nickel foam cylinder (29) is provided at the center of the dark fermentation reaction chamber (16), and the thermally modified tourmaline (18) is filled in the nickel foam cylinder (29); The dark fermentation reaction chamber (16) is provided with another temperature sensor (5), a pH sensor (19) and an ORP sensor (23) electrically connected to the control component; The dark fermentation reaction chamber (16) is connected to the discharge end of the condenser (13) through a substrate feed port (14); a bottom side of the dark fermentation reaction chamber (16) is connected to a biogas residue discharge port (22); and a middle side of the dark fermentation reaction chamber (16) is connected to a hydrogen-producing bacteria inoculation port (15); The top of the dark fermentation reaction chamber (16) is provided with a pH automatic adjustment device (26) for adjusting the pH value in the dark fermentation reaction chamber (16) and another temperature controller (21) for adjusting the temperature in the dark fermentation reaction chamber (16). The dark fermentation reaction chamber (16) is also connected with a double port (20).

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