Method and apparatus for producing hydrogen by catalytic cracking of biologic matter

A catalytic cracking and biomass technology, applied in the field of biomass catalytic cracking to produce hydrogen, to achieve wide adaptability, improve conversion rate and energy utilization efficiency, and reduce tar content

Inactive Publication Date: 2003-08-13
GUANGZHOU INST OF ENERGY CONVERSION - CHINESE ACAD OF SCI
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Problems solved by technology

[0003] Combining the catalytic cracking reaction of biomass with the catalytic cracking of tar and the steam shift reaction of carbon and CO, these reactions are carried out in the same and different regions in the fluidized bed, and the heat of exothermic reaction is endothermic reaction used, so as to maximize the production of hydrogen, this method has not been reported so far

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  • Method and apparatus for producing hydrogen by catalytic cracking of biologic matter
  • Method and apparatus for producing hydrogen by catalytic cracking of biologic matter

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[0027] After the air is boosted by the blower 5, the air is heated to above 300°C by the air preheater 4 and passed into the lower part of the fluidized bed reactor 7, after flowing through the distribution plate, it enters the feed bin 1 and is fed by the screw feeder 3 The burning of pine wood powder produces a high temperature of more than 700 ℃. The temperature between the fluidized bed reactor 7 and the screw feeder 3 is lowered by a cooling system 2 passing through cooling water to ensure the smooth flow of biomass feed. Simultaneously, the superheated water vapor produced by steam generator 6 is introduced from different regions of fluidized bed reactor 7, and most of the pine wood powder is fluidized under high-temperature environment, and is reacted on iron-based catalyst, alkali metal catalyst and nickel-based catalyst. Catalytic gasification, water-gas shift, and tar cracking reactions occur in different areas of the fluidized bed reactor 7 under the action of 0.5 t...

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Abstract

A process for preparing hydrogen gas by catalytic cracking of biologic substance includes preheating air, introducing it to fluidized-bed reactor, burning along with biological substance to generate high temp while introducing water steam into the reactor, fluidizing the most of biologic substance, catalytic gasifying-water-coal gas conversion-tar cracking reactions to generate hydrogen-enriched gas, removing dust by cyclone separator, cracking tar in fixed-bed reactor, and purifying. Its advantages are high conversion and utilization rate of energy, and no environmental pollution.

Description

technical field [0001] The invention relates to a method for producing hydrogen by catalytic cracking of biomass and a device for realizing the method. Background technique [0002] The dependence on fossil fuels has threatened the energy security of many countries, and its use has also brought pollution to the global environment. The use of clean energy has become an important direction for the sustainable development of the national economy in the 21st century. Hydrogen itself is non-toxic and odorless. When it burns with oxygen, it will generate pure water and has zero pollution to the environment. It has already played an important role in the aerospace industry as a fuel. At present, 90% of the hydrogen in the world comes from steam reforming (Steam Reforming) of fossil fuels (coal, oil and natural gas), which is costly and emits SO x , NO x and other environmental pollutants. Biomass has become a promising source of hydrogen due to its renewable, huge yield, carbon ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B3/02C10G3/00
CPCY02P20/129Y02P30/20
Inventor 常杰王铁军吕鹏梅吴创之陈勇
Owner GUANGZHOU INST OF ENERGY CONVERSION - CHINESE ACAD OF SCI
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