Method for making hydrogen through pyrolytic gasification of biomass and coke under microwave field
A technology of pyrolysis gasification and biomass, applied in chemical instruments and methods, hydrogen, hydrogen separation, etc., can solve the problems of low hydrogen yield and high tar content, and achieve reduced tar production, short reaction time and high efficiency Effect
Inactive Publication Date: 2013-01-16
ANHUI UNIV OF SCI & TECH
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Problems solved by technology
[0005] In order to avoid the shortcomings of the above-mentioned prior art, the present invention provides a method for producing hydrogen by coupling catalytic pyrolysis and gasification of fresh biomass and coke, so as to overcome the high tar content and the high tar content of hydrogen production from existing biomass. low rate of defects
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Embodiment 1
[0032] Using fresh corn stalks as raw material, the raw material has a water content of 20.08% by mass percentage, crushing the fresh corn stalks into pellets below 2 mm, and adopting steps 1 to 4 of the method of the present invention to prepare hydrogen, and microwave pyrolysis in step 4 After 15 minutes of gasification, the gas products were collected, and the gas produced per kilogram of dry corn stalks was 0.66 kg, and the volume ratio of hydrogen was 60.2%.
Embodiment 2
[0034] Using fresh wheat stalks as raw materials, the moisture content of the raw materials is 30.01% by mass, and the same process as in Example 1 is adopted to produce 0.77 kg of gas per kilogram of dry corn stalks, of which the volume ratio of hydrogen is 63.4%.
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The invention discloses a method for making hydrogen through the pyrolytic gasification of biomass and coke under a microwave field, which is characterized by comprising the following steps of: by using fresh biomass as a raw material, zinc chloride as a catalyst and the coke as a microwave-absorbing medium and a gasifying material, carrying out the pyrolytic gasification of the raw material, the catalyst and the coke by using a microwave source as a heating source after uniformly mixing the raw material, the catalyst and the coke, collecting a volatile product which is formed through the pyrolytic gasification through nitrogen purging, then removing tar, water and ash through a water-ice mixture-cooling system, and then entering a hydrogen-gas separating system to obtain hydrogen gas. The fresh biomass required by the method disclosed by the invention is cheap and easy to obtain, the raw material is reproducible, and the integrated sustainable utilization of resources, energy sources and environments can be realized.
Description
technical field [0001] The invention relates to a method for producing hydrogen by coupling catalytic pyrolysis gasification of fresh biomass and coke under a microwave field. Background technique [0002] Hydrogen is used as fuel, and its combustion product is water, which is clean and pollution-free, and the heat generated by hydrogen combustion is large. At present, hydrogen is widely used in chemical, food, smelting, aviation, transportation and other fields. The development of the hydrogen energy economy has become the consensus of all countries in the world. It has become a consensus to form a sustainable energy model through the production and storage of hydrogen and breakthroughs in fuel cell technology. [0003] In the entire hydrogen energy chain, the development of hydrogen production technology has become a hot issue that has attracted much attention. Although the process of hydrogen production by electrolysis of water is simple, the energy consumption is too h...
Claims
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Login to View More IPC IPC(8): C01B3/02C01B3/50C01B3/00
CPCY02E60/324Y02P20/10
Inventor 闵凡飞刘令云张明旭刘银王庆平
Owner ANHUI UNIV OF SCI & TECH
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