Algae hydrogen production device

Abstract

The utility model discloses an algae hydrogen production device which comprises an impurity removal system and a hydrogen production system, and the impurity removal system is used for introducing carbon dioxide and removing impurities in the carbon dioxide; the hydrogen production system comprises a plurality of culture ponds, each culture pond contains a culture solution, hydrogen production microorganisms are contained in the culture solution, each culture pond is communicated with a gas guide pipe, one end of the gas guide pipe extends into the culture solution, the other end of the gas guide pipe is communicated with an output pipeline of the impurity removal system in parallel, each culture pond is communicated with an exhaust pipe, and the exhaust pipe is communicated with the hydrogen production microorganisms. The exhaust pipe is communicated with the hydrogen collecting pipe in parallel, and the hydrogen collecting pipe is used for collecting hydrogen. In the embodiment of the invention, the hydrogen-producing microorganism is blue-green algae, the blue-green algae generates hydrogen under photosynthesis under the conditions of no sulfur and negative pressure, and before hydrogen production, the blue-green algae in the culture pond can be cultured by a culture solution for a certain time and is irradiated by sunlight or lamplight for 12-15 hours.

Description

Technical Field

[0001] This utility model relates to the field of biohydrogen production, and in particular to an algae-based hydrogen production device. Background Technology

[0002] Hydrogen, as a clean energy source, is widely used not only in the fuel sector but also in the chemical and food industries to varying degrees.

[0003] Traditional hydrogen production methods include hydrogen production through water electrolysis and hydrogen production using fossil fuels as feedstocks. Hydrogen production through water electrolysis is very energy-intensive, while hydrogen production from fossil fuels not only relies on fossil fuels but also increases carbon emissions. Utility Model Content

[0004] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes an algae-based hydrogen production device that produces hydrogen without increasing carbon emissions or consuming additional energy.

[0005] An algae-based hydrogen production device according to an embodiment of the present invention includes: an impurity removal system and a hydrogen production system. The impurity removal system is used to introduce carbon dioxide and remove impurities from the carbon dioxide. The hydrogen production system includes several culture tanks, each containing a culture medium containing hydrogen-producing microorganisms. Each culture tank is connected to a gas delivery pipe, one end of which extends into the culture medium, and the other end of which is connected in parallel to the output pipe of the impurity removal system. Each culture tank is connected to an exhaust pipe, which is connected in parallel to a hydrogen collection pipe for collecting hydrogen. A one-way hydrogen output valve is connected to the exhaust pipe.

[0006] At least the following beneficial effects are achieved: Carbon dioxide, as the raw material gas, passes through this algae-based hydrogen production device. The carbon dioxide gas contains hydrogen sulfide and other solid impurities. The impurity removal system removes the hydrogen sulfide and other solid impurities carried by the carbon dioxide gas. The carbon dioxide after impurity removal enters the culture tank through the output pipe. The culture tank contains a culture medium, which provides survival conditions for hydrogen-producing microorganisms. Carbon dioxide enters the culture tank through the gas guide pipe, which extends into the culture medium to quickly replace the gas in the culture tank. Several culture tanks are set up and connected in parallel to ensure that each culture tank exists independently and does not interfere with each other, thereby improving hydrogen production efficiency. Several exhaust pipes are connected in parallel and connected to the collection pipe to facilitate the collection of hydrogen gas discharged from the culture tank and to save materials. The one-way hydrogen output valve ensures that the hydrogen-producing microorganisms in the culture tank discharge hydrogen gas at the same time as producing hydrogen, which improves efficiency and ensures that the culture tank is always under negative pressure.

[0007] According to some embodiments of the present invention, the impurity removal system includes: a desulfurization device and a purification device. The desulfurization device is used to receive raw carbon dioxide gas and remove sulfur-containing impurities from the raw carbon dioxide gas. The inlet of the purification device is connected to the outlet of the desulfurization device, and the outlet of the purification device is connected to the output pipe. The purification device is used to purify the carbon dioxide gas output by the desulfurization device. The desulfurization device and the purification device cooperate to remove impurities in the carbon dioxide gas that affect the hydrogen production biological process.

[0008] According to some embodiments of the present invention, the purification device includes a water separator, the inlet of which is connected to the gas outlet of the desulfurization device, and the outlet of which is connected to the output pipe. The water separator is used to remove impurities from the carbon dioxide gas transported from the desulfurization device.

[0009] According to some embodiments of the present invention, the purification device includes a hydrogen sulfide adsorber, the inlet of which is connected to the outlet of the water separator, and the outlet of which is connected to the output pipe. The hydrogen sulfide adsorber is used to remove hydrogen sulfide impurities from the carbon dioxide gas transferred from the water separator.

[0010] According to some embodiments of the present invention, the purification device includes a booster, the inlet of which is connected to the outlet of the hydrogen sulfide adsorber, and the outlet of which is connected to the output pipe. The booster is used to pressurize the carbon dioxide gas transmitted from the hydrogen sulfide adsorber.

[0011] According to some embodiments of the present invention, the purification device includes a hydrolysis tower, the inlet of which is connected to the outlet of the booster, and the outlet of which is connected to the output pipe. The hydrolysis tower is used to remove impurities from the carbon dioxide gas transmitted from the booster.

[0012] According to some embodiments of the present invention, the purification device includes a cooler, the inlet of which is connected to the outlet of the hydrolysis tower, and the outlet of which is connected to the output pipe. The cooler is used to cool the carbon dioxide gas transferred from the hydrolysis tower so that the temperature of the carbon dioxide gas is suitable for hydrogen production by hydrogen-producing microorganisms.

[0013] According to some embodiments of the present invention, the purification device includes an adsorber, the inlet of which is connected to the outlet of the hydrolysis tower, and the outlet of which is connected to the output pipe. The adsorber is used to remove solid impurities from carbon dioxide gas transferred from the cooler.

[0014] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

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

[0016] Figure 1 This is a schematic diagram of the structure of an embodiment of the present utility model;

[0017] Figure 2 for Figure 1 The diagram shows an enlarged view of the structure of A;

[0018] Reference numerals in the attached diagram: 100, impurity removal system, 110, desulfurization device, 120, purification device, 130, water separator, 131, hydrogen sulfide adsorber, 132, hydrolysis tower, 133, adsorber, 134, booster, 135, cooler.

[0019] Hydrogen production system 200, culture tank 210, culture medium 220, gas delivery pipe 230, exhaust pipe 240, hydrogen collection pipe 250, one-way hydrogen output valve 260. Detailed Implementation

[0020] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0021] In the description of this utility model, the use of "first" and "second" is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features or the order of the technical features.

[0022] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0023] Reference Figure 1 and Figure 2This utility model discloses an algae-based hydrogen production device, comprising: a purification system 100 and a hydrogen production system 200. The purification system 100 is used to introduce carbon dioxide and remove impurities from the carbon dioxide. The hydrogen production system 200 includes several culture tanks 210, each culture tank 210 containing a culture medium 220 containing hydrogen-producing microorganisms. Each culture tank 210 is connected to a gas delivery pipe 230, one end of which extends into the culture medium 220, and the other end of which is connected in parallel to the output pipe 110 of the purification system 100. Each culture tank 210 is also connected to an exhaust pipe 240, which is connected in parallel to a hydrogen collection pipe 250 for collecting hydrogen. A one-way hydrogen output valve 260 is connected to the exhaust pipe 240.

[0024] In this embodiment, the hydrogen-producing microorganism is cyanobacteria. Cyanobacteria produce hydrogen through photosynthesis under sulfur-free and negative pressure conditions. Before hydrogen production, the cyanobacteria in the culture tank 210 are cultured in the culture medium 220 for a certain period of time and exposed to sunlight or artificial light for 12-15 hours to allow the bioaccumulation of cyanobacteria to reach a certain amount. Then, carbon dioxide gas that has been purified is quickly passed into the culture tank 210. The carbon dioxide gas is introduced into the culture tank 210 at a pressure of 0.15 MPa and replaces the original gas in the culture tank 210 within 45 seconds. Under sulfur-free and negative pressure conditions, the hydrogenase operates efficiently, achieving efficient hydrogen production.

[0025] Carbon dioxide, used as a raw material gas, passes through this algae-based hydrogen production device. The carbon dioxide gas contains hydrogen sulfide and other solid impurities. The carbon dioxide gas passes through a purification system 100 to remove the hydrogen sulfide and other solid impurities. The purified carbon dioxide then enters a culture tank 210 through an output pipe 110. The culture tank 210 contains a culture medium 220, which provides the survival conditions for the hydrogen-producing microorganisms. The carbon dioxide enters the culture tank through a gas delivery pipe 230, which extends into the culture medium, allowing for rapid... The gas in the culture tank is replaced. Several culture tanks 210 are set up and connected in parallel to ensure that each culture tank 210 exists independently and does not interfere with each other, which is used to improve hydrogen production efficiency. Several exhaust pipes 240 are connected in parallel and connected to the collection pipe 250 to facilitate the collection of hydrogen gas discharged from the culture tank 210 and save materials. The one-way hydrogen output valve 260 ensures that the hydrogen-producing microorganisms in the culture tank 210 discharge hydrogen gas at the same time as producing hydrogen, which improves efficiency and ensures that the culture tank 210 always maintains negative pressure.

[0026] In some embodiments, a one-way hydrogen output valve 260 is connected to the exhaust pipe 240. The one-way hydrogen output valve 260 can discharge hydrogen in one direction, ensuring that hydrogen is discharged during hydrogen production. While ensuring the purity of hydrogen, it also ensures that the gas pressure in the culture tank 210 is always less than 0.15 MPa after hydrogen production begins. Maintaining negative pressure in the culture tank 210 also facilitates carbon dioxide replacement.

[0027] It should be understood that the impurity removal system 100 includes a desulfurization device 120 and a purification device 130. The desulfurization device 120 is used to remove sulfur-containing impurities from carbon dioxide gas, and the purification device 130 is used to remove residual sulfur-containing impurities and other impurities from carbon dioxide gas. Both the desulfurization device 120 and the purification device 130 are for removing impurities from carbon dioxide gas. In this embodiment, cyanobacteria need to produce hydrogen in a sulfur-free state, so it is necessary to ensure that the carbon dioxide passing through the cultivation tank 210 is sulfur-free. The final product of the desulfurization device 120 is elemental sulfur, which can be reused as an industrial raw material, saving costs and being environmentally friendly. The residual sulfur compounds and some solid impurities are removed after passing through the purification device 130.

[0028] It is conceivable that the purification device 130 includes a water separator 131, a hydrogen sulfide adsorber 132, a hydrolysis tower 133, and an adsorber 134. The water separator 131 is used to remove impurities such as oil from the carbon dioxide gas, the hydrogen sulfide adsorber 132 is used to remove hydrogen sulfide remaining in the carbon dioxide gas, the hydrolysis tower 133 is used to remove hydrogen sulfide remaining in the carbon dioxide gas, and the adsorber 134 is used to remove solid impurities in the carbon dioxide gas. The water separator 131, hydrogen sulfide adsorber 132, hydrolysis tower 133, and adsorber 134 are arranged after the desulfurization device 120. The water separator 131, hydrogen sulfide adsorber 132, hydrolysis tower 133, and adsorber 134 are all used to remove impurities in the carbon dioxide transmitted from the desulfurization device 120. In this embodiment, the arrangement of multiple purification devices 130 ensures that the carbon dioxide gas finally entering the culture tank 210 does not contain sulfur or other impurities that affect the operation of the hydrogenase.

[0029] In some embodiments, the purification device 130 further includes a booster 135 and a cooler 136. The booster 135 is used to pressurize the carbon dioxide gas, and the cooler 136 is used to cool the carbon dioxide gas. Both the booster 135 and the cooler 136 act on the carbon dioxide gas, so that the carbon dioxide enters the culture tank 210 at a certain pressure and temperature. In this embodiment, the booster 135 pressurizes the carbon dioxide gas to 0.15 MPa.

[0030] In some embodiments, the sequential flow of carbon dioxide in this hydrogen production device is as follows: carbon dioxide feed gas enters the desulfurization unit 120 through the inlet, enters the inlet of the water separator 131 through the outlet of the desulfurization unit 120, enters the inlet of the hydrogen sulfide adsorber 132 through the outlet of the water separator 131, enters the inlet of the booster through the outlet of the hydrogen sulfide adsorber 132, enters the inlet of the booster 135 through the outlet of the booster 135, enters the inlet of the hydrolysis tower through the outlet of the hydrolysis tower 133, enters the inlet of the cooler 136 through the outlet of the cooler 136, enters the inlet of the adsorber 134 through the outlet of the adsorber 134, and enters the hydrogen production system 200 through the outlet pipe 110.

[0031] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0032] Of course, this utility model is not limited to the above-described embodiments. Those skilled in the art can make equivalent modifications or substitutions without departing from the spirit of this utility model. All such equivalent modifications or substitutions are included within the scope defined by the claims of this application.

Claims

1. An algae-based hydrogen production device, characterized in that, include: A purification system (100) is used to introduce carbon dioxide and remove impurities from the carbon dioxide; The hydrogen production system (200) includes several culture tanks (210), each of which contains a culture medium (220) containing hydrogen-producing microorganisms. Each culture tank (210) is connected to a gas delivery pipe (230), one end of which extends into the culture medium (220), and the other end of which is connected in parallel to the output pipe (110) of the impurity removal system (100). Each culture tank (210) is also connected to an exhaust pipe (240), which is connected in parallel to a hydrogen collection pipe (250) for collecting hydrogen. A one-way hydrogen output valve (260) is connected to the exhaust pipe (240).

2. The algae-based hydrogen production device according to claim 1, characterized in that, The impurity removal system (100) includes: The desulfurization unit (120) is used to receive raw carbon dioxide gas and remove sulfur-containing impurities from the raw carbon dioxide gas; Purification device (130), the air inlet of the purification device (130) is connected to the air outlet of the desulfurization device (120), the air outlet of the purification device (130) is connected to the output pipe (110), and the purification device (130) is used to purify the carbon dioxide gas output by the desulfurization device (120).

3. The algae-based hydrogen production device according to claim 2, characterized in that, The purification device (130) includes a water separator (131), the inlet of which is connected to the gas outlet of the desulfurization device (120), and the outlet of which is connected to the output pipe (110).

4. The algae-based hydrogen production device according to claim 3, characterized in that, The purification device (130) includes a hydrogen sulfide adsorber (132), the inlet of which is connected to the outlet of the water separator (131), and the outlet of which is connected to the output pipe (110).

5. The algae-based hydrogen production device according to claim 4, characterized in that, The purification device (130) includes a booster (135), the inlet of which is connected to the outlet of the hydrogen sulfide adsorber (132), and the outlet of which is connected to the output pipe (110).

6. The algae-based hydrogen production device according to claim 5, characterized in that, The purification device (130) includes a hydrolysis tower (133), the inlet of which is connected to the outlet of the booster (135), and the outlet of which is connected to the output pipe (110).

7. The algae-based hydrogen production device according to claim 6, characterized in that, The purification device (130) includes a cooler (136), the inlet of which is connected to the outlet of the hydrolysis tower (133), and the outlet of which is connected to the output pipe (110).

8. The algae-based hydrogen production device according to claim 7, characterized in that, The purification device (130) includes an adsorber (134), the inlet of which is connected to the outlet of the hydrolysis tower (133), and the outlet of which is connected to the output pipe (110).

Images