CN214270854U - Device for producing hydrogen by biomass fermentation - Google Patents
Device for producing hydrogen by biomass fermentation Download PDFInfo
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- CN214270854U CN214270854U CN202023066480.1U CN202023066480U CN214270854U CN 214270854 U CN214270854 U CN 214270854U CN 202023066480 U CN202023066480 U CN 202023066480U CN 214270854 U CN214270854 U CN 214270854U
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Abstract
The utility model belongs to biomass energy hydrogen manufacturing field, concretely relates to device of biomass fermentation hydrogen manufacturing. The device comprises a batching tank, a reaction tank, a solid-liquid separator and a hydrogen storage tank, wherein the batching tank, the reaction tank and the solid-liquid separator are sequentially connected through a pipeline, and the reaction tank is also connected with the hydrogen storage tank through a pipeline; a stirring device is arranged in the batching tank; and a heater and a stirring device are arranged in the reaction tank. The device adopts the pyrolysis and fermentation methods to prepare the hydrogen, changes the low-density biomass (such as cow dung) energy into the high-density hydrogen energy, greatly improves the energy density, and greatly reduces the comprehensive cost of hydrogen production. In addition, the device also solves the problem that the existing biomass burns to pollute the atmosphere, and the biomass fermented by the device can also be used as organic fertilizer for crops. Generally speaking, the utility model relates to a biomass fermentation hydrogen production device has strong practicality, covers the field, has very wide spreading value.
Description
Technical Field
The utility model belongs to biomass energy hydrogen manufacturing field, concretely relates to device of biomass fermentation hydrogen manufacturing.
Background
Hydrogen energy is a recognized clean renewable energy source that is emerging as a low carbon and zero carbon energy source. At present, China has made various progress in the field of hydrogen energy. In addition, the hydrogen has the characteristics of cleanness, light weight, no toxicity, high utilization rate and the like.
Hydrogen is an energy storage medium and can even be considered as an energy carrier as electricity. With the development of the technology, more and more methods for preparing hydrogen are available, the efficiency is higher and higher, and hydrogen can be finally prepared by primary energy or secondary energy. Hydrogen energy is a very promising clean energy and will certainly become one of the leading roles of future clean energy. At present, from the energy source of hydrogen production, coal chemical industry, the industry of producing alkali by electrolyzing salt, the industry of synthesizing ammonia fertilizer, the industry of refining petroleum and the like all have byproduct hydrogen, but the production cost of the hydrogen is high, and the hydrogen is not friendly to the environment. How to fully utilize resources and solve the problem of environmental pollution caused by waste water and waste gas becomes a restriction factor of biomass as energy.
Disclosure of Invention
In order to solve the problem of high hydrogen production cost in the prior art, the device for producing hydrogen by biomass fermentation adopts a pyrolysis and fermentation method to prepare hydrogen, changes low-density biomass (such as cow dung) energy into high-density hydrogen energy, greatly improves energy density, and greatly reduces the comprehensive cost of hydrogen production.
In order to realize the purpose, the technical scheme of the utility model is that:
a device for producing hydrogen by biomass fermentation comprises a batching tank, a reaction tank, a solid-liquid separator and a hydrogen storage tank, wherein the batching tank, the reaction tank and the solid-liquid separator are sequentially connected through a pipeline, and the reaction tank is also connected with the hydrogen storage tank through a pipeline; the mixing tank is used for mixing and proportioning the various biomass raw materials after the crushing treatment, and a stirring device is arranged in the mixing tank; the reaction tank is used for carrying out anaerobic fermentation on biomass to produce hydrogen, and a heater and a stirring device are arranged in the reaction tank; the solid-liquid separator is used for carrying out solid-liquid separation on the fermentation product; the hydrogen storage tank is used for storing the hydrogen prepared in the reaction tank.
In a further scheme, pumps are arranged on pipelines between the batching tank and the reaction tank and between the reaction tank and the solid-liquid separator.
In a further scheme, one side of the batching tank is provided with a biomass raw material inlet, and the other side of the batching tank is provided with a biomass mixture outlet.
In a further scheme, one side of the reaction tank is provided with a biomass mixture inlet, the inlet is connected with a biomass mixture outlet of the batching tank through a pipeline, a nutrient substance inlet and a hydrogen outlet are arranged above the reaction tank, and a fermentation product outlet is arranged on one side of the reaction tank opposite to the biomass mixture inlet.
In a further scheme, a fermentation product inlet is formed in one side of the solid-liquid separator, the inlet is connected with a fermentation product outlet in the reaction tank through a pipeline, and a filtrate outlet is formed in the bottom of the solid-liquid separator.
In a further scheme, the solid-liquid separator comprises a body, a screen is arranged on the inner periphery of the body, a space is reserved between the screen and the body, and a spiral stirring paddle is arranged in the middle of the solid-liquid separator.
In a further scheme, the inlet of the hydrogen storage tank is connected with the hydrogen outlet of the reaction tank through a pipeline.
The utility model has the advantages that:
1. the utility model relates to a living beings (cow dung) fermentation hydrogen plant adopts pyrolysis and fermentation method preparation hydrogen, becomes the high density hydrogen energy with low density living beings (like cow dung) energy, and energy density increases substantially, and can reduce hydrogen manufacturing comprehensive cost by a wide margin.
2. The biomass combustion process is insufficient, secondary air pollution is easily caused, common pollutants comprise carbon monoxide, sulfur dioxide, oxynitride and smoke dust, greenhouse gases with strong heat absorptivity, such as carbon dioxide and the like discharged into the atmosphere, are increased year by year, and the greenhouse effect of the atmosphere is enhanced. The utility model relates to a biomass fermentation hydrogen production device, which solves the problem that the combustion of the existing biomass (such as cow dung) pollutes the atmosphere.
3. Utilize the utility model relates to a biomass fermentation hydrogen plant's fermented living beings can regard as the organic fertilizer of crops, and it can improve soil structure to use organic fertilizer, improves soil fertility and land productivity.
4. The utility model has strong practicability, simple structure, low cost of hydrogen production raw materials, coverage of fields and high popularization value; is suitable for large-scale hydrogen production and small-scale (such as rural farmers) gas production.
5. The invention has simple structure and can fully utilize the renewable resource of biomass. Can also effectively solve the problem of environmental pollution caused by waste water and waste gas.
Drawings
FIG. 1 is a schematic structural diagram of a biomass fermentation hydrogen production plant of the present invention.
Fig. 2 is a schematic structural diagram 1 of a solid-liquid separator in a biomass fermentation hydrogen production device of the present invention.
Fig. 3 is a schematic structural diagram 2 of a solid-liquid separator in a biomass fermentation hydrogen production device of the present invention.
In the attached drawing, 1 is a material preparing tank, 2 is a reaction tank, 3 is a solid-liquid separator, 31 is a machine body, 32 is a screen, 33 is a spiral stirring paddle, 34 is a filtrate outlet, and 4 is a hydrogen storage tank.
Detailed Description
The present invention is explained in detail by the following specific embodiments, but the protection scope of the present invention is not limited to the following embodiments, and any person skilled in the art can combine the technical solutions that can be conceived by the common general knowledge in the art on the basis of the present invention, and all belong to the protection scope of the present invention.
As shown in FIGS. 1-3, the biomass fermentation hydrogen production device of the embodiment comprises a mixing tank 1, a reaction tank 2, a solid-liquid separator 3 and a hydrogen storage tank 4, wherein the mixing tank 1, the reaction tank 2 and the solid-liquid separator 3 are sequentially connected through a pipeline, and the reaction tank 2 is further connected with the hydrogen storage tank 4 through a pipeline. Pumps are respectively arranged on the pipeline between the proportioning tank 1 and the reaction tank 2 and the pipeline between the reaction tank 2 and the solid-liquid separator 3 and are respectively used for pumping the biomass mixture and the fermentation product.
Batching jar 1 is used for mixing the ratio to multiple biomass feedstock after shredding, is provided with agitating unit in it, and one side of batching jar 1 is provided with biomass feedstock import, and the opposite side is provided with the export of biomass mixture.
The reaction tank 2 is used for anaerobic fermentation of biomass to produce hydrogen, a heater and a stirring device are arranged in the reaction tank, a biomass mixture inlet is formed in one side of the reaction tank 2, the inlet is connected with a biomass mixture outlet of the batching tank 1 through a pipeline, a nutrient substance inlet and a hydrogen outlet are formed in the upper portion of the reaction tank 2, and a fermentation product outlet is formed in one side, opposite to the biomass mixture inlet, of the reaction tank 2.
The solid-liquid separator 3 is used for carrying out solid-liquid separation on the fermentation product; one side of the solid-liquid separator 3 is provided with a fermentation product inlet which is connected with the fermentation product outlet on the reaction tank 2 through a pipeline, and the bottom of the solid-liquid separator 3 is also provided with a filtrate outlet 34. The solid-liquid separator 3 comprises a body 31, a screen 32 is fixedly arranged on the inner periphery of the body 31, a space is reserved between the screen 32 and the body 31, and a spiral stirring paddle 33 is arranged in the middle of the solid-liquid separator 3. The residue after the solid-liquid separation is left on the screen 32, the water content of the residue is between 65 and 75 percent, and the filtrate can be discharged through a filtrate outlet 34 at the bottom of the solid-liquid separator 3.
The hydrogen storage tank 4 is used for storing the hydrogen prepared in the reaction tank, and a high-pressure hydrogen cylinder is used for storing the hydrogen, and the pressure is generally 35-70 MPa. The inlet of the hydrogen storage tank 4 is connected with the hydrogen outlet of the reaction tank 2 through a pipeline.
The biomass fermentation hydrogen production device has the following use process:
firstly, preparation of biomass raw materials:
1. taking cow dung of a cow farm as a main fermentation substrate:
(1) soaking: weighing cow dung, and soaking the cow dung in water for 1-2 days;
(2) aeration treatment: adding NaOH solution into the cow dung soaking solution and then carrying out forced aeration on the cow dung soaking solution;
(3) and (3) pH adjustment: and adjusting the aerated cow dung to a certain pH value for subsequent fermentation. The proper pH value greatly improves the hydrogen production performance, and the optimal hydrogen production pH value range is generally considered to be between 5.0 and 6.5.
2. Taking corn straws as a second fermentation substrate:
the corn stalks are naturally dried and then cut into small sections of 3-5 cm, and the small sections are mechanically crushed into the grain size of 0.850mm (the grain size is 20 meshes). Drying the mixture in an oven at the temperature of 55-60 ℃ to constant weight, and storing the dried mixture for later use.
Second, the biomass raw material is mixed and fermented to produce hydrogen
1. And adding the pretreated cow dung and the pretreated corn straws into the batching tank, and stirring and mixing by using a stirring device to obtain a biomass mixture.
2. The biomass mixture is pumped into a continuous stirring reaction tank through a pipeline, glucose and biomass fermentation hydrogen production nutrient solution are added through a nutrient substance inlet above the reaction tank, wherein the glucose is analytically pure (> 99.5%), the biomass fermentation hydrogen production nutrient solution comprises: sodium chloride, magnesium sulfate and ferrous sulfate. In the process of biological fermentation hydrogen production, hydrogen-producing microorganisms in fermentation liquor need to consume substrates and keep the hydrogen-producing microorganisms in a better survival state, so that the nutrient elements also need to be added into the fermentation liquor.
After glucose and nutrient solution are added, anaerobic fermentation is carried out to produce hydrogen. The proper environmental temperature value greatly improves the hydrogen production performance, the optimal hydrogen production temperature value range is generally considered to be 35-40 ℃, and a heater in the reaction tank can heat the biomass mixture to ensure that the temperature is 35-40 ℃. Hydrogen generated by fermentation in the reaction tank enters the hydrogen storage tank through a pipeline, and after hydrogen generation is finished, materials (fermentation products) in the reaction tank are pumped to a solid-liquid separator through the pipeline for solid-liquid separation.
3. The solid product can be collected and stored after being separated by a screen, and the filtrate can be returned to the field for application as organic fertilizer and liquid fertilizer.
The fermentation hydrogen production reaction utilizes renewable resources such as waste substances, has no pollution in the reaction process, and can carry out high-efficiency and low-energy-consumption hydrogen production reaction at lower temperature and normal pressure. The reaction has high hydrogen conversion efficiency and good stability of hydrogen production by fermentation.
Application examples
Through experiments in a 30L reaction tank, the dynamics data of the fermentation hydrogen production process by using the corn straws and the cow dung as substrates are measured, and are shown in the table 1. When 3.0g/L glucose is added, the hydrogen production amount per g of fermentation substrate reaches 213.4mL, the cow dung utilization rate is about 61%, and the hydrogen production time is about 7.3 h.
TABLE 1 dynamics data of fermentation hydrogen production process using corn stalks and cow dung as substrates
By adopting the device to ferment and produce hydrogen, the utilization efficiency of the cow dung can reach more than 60 percent. The hydrogen production time is about 7.3 h.
The above-mentioned embodiments are merely preferred embodiments of the present invention, and not intended to limit the scope of the present invention, so that equivalent changes or modifications made by the structure, features and principles of the present invention should be included in the claims of the present invention.
Claims (7)
1. The device for producing hydrogen by biomass fermentation is characterized by comprising a mixing tank (1), a reaction tank (2), a solid-liquid separator (3) and a hydrogen storage tank (4), wherein the mixing tank (1), the reaction tank (2) and the solid-liquid separator (3) are sequentially connected through a pipeline, and the reaction tank (2) is also connected with the hydrogen storage tank (4) through a pipeline; a stirring device is arranged in the batching tank (1); and a heater and a stirring device are arranged in the reaction tank (2).
2. The device for producing hydrogen through biomass fermentation according to claim 1, wherein pumps are arranged on the pipeline between the dosing tank (1) and the reaction tank (2) and the pipeline between the reaction tank (2) and the solid-liquid separator (3).
3. The device for producing hydrogen through biomass fermentation according to claim 1, wherein a biomass raw material inlet is formed in one side of the batching tank (1), and a biomass mixture outlet is formed in the other side of the batching tank.
4. The device for producing hydrogen through biomass fermentation according to claim 1, wherein a biomass mixture inlet is formed in one side of the reaction tank (2), the inlet is connected with a biomass mixture outlet of the batching tank (1) through a pipeline, a nutrient inlet and a hydrogen outlet are formed above the reaction tank (2), and a fermentation product outlet is formed in one side of the reaction tank (2) opposite to the biomass mixture inlet.
5. The device for producing hydrogen by fermenting biomass according to claim 1, wherein one side of the solid-liquid separator (3) is provided with a fermentation product inlet, the inlet is connected with a fermentation product outlet on the reaction tank (2) through a pipeline, and the bottom of the solid-liquid separator (3) is also provided with a filtrate outlet (34).
6. The device for producing hydrogen through biomass fermentation according to claim 5, characterized in that the solid-liquid separator (3) comprises a body (31), a screen (32) is arranged on the inner periphery of the body (31), a space is reserved between the screen (32) and the body (31), and a spiral stirring paddle (33) is arranged in the middle of the solid-liquid separator (3).
7. The device for producing hydrogen through biomass fermentation according to claim 1, wherein an inlet of the hydrogen storage tank (4) is connected with a hydrogen outlet of the reaction tank (2) through a pipeline.
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| CN202023066480.1U CN214270854U (en) | 2020-12-18 | 2020-12-18 | Device for producing hydrogen by biomass fermentation |
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| CN202023066480.1U CN214270854U (en) | 2020-12-18 | 2020-12-18 | Device for producing hydrogen by biomass fermentation |
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Address after: 456400 No. 293, Yujiazhuang village, WANGU Town, Hua county, Anyang City, Henan Province Patentee after: Zhao Junzhou Address before: 453000 Jiuzhou hotel family courtyard, Jiefang Road (South) Xinjian street, Weibin District, Xinxiang City, Henan Province Patentee before: Zhao Junzhou |