2results about How to "Achieve cracking" patented technology

This invention provides a biomass pyrolysis method, comprising the following steps: contacting biomass feedstock with carbon foam material, applying microwaves under an inert atmosphere to generate plasma with a temperature not lower than 3000K, causing the biomass feedstock to undergo a pyrolysis reaction; simultaneously, the volume ratio of the carbon foam material to the microwave power is 1:(25-500); wherein the unit of volume is cm³. 3 The unit of power is W. This biomass pyrolysis method has high conversion efficiency and high added value.

The utility model relates to the technical field of biomass energy conversion, disclose a kind of double fluidized bed biomass grading gasification system, comprising: pyrolysis fluidized bed carries out low-temperature pyrolysis to biomass, and by first cyclone separator, pyrolysis gas is sent into pyrolysis gas outlet, and solid matter is sent into first return feeder;Tubular reaction unit purifies the pyrolysis gas that flows;Gasification fluidized bed receives the pyrolysis gas that tubular reaction unit transports and the solid matter that first return feeder transports, after carrying out oxidation-reduction reaction, generate synthesis gas, and by second cyclone separator, synthesis gas is discharged and reused, and hot carrier in solid matter is returned pyrolysis fluidized bed by second return feeder;The gasification temperature in gasification fluidized bed is higher than the pyrolysis temperature in pyrolysis fluidized bed.The application is coupled by double fluidized bed design, realizes biomass grading pyrolysis and gasification, and tar content of synthesis gas is low;And the pyrolysis gas after purification is used as gasification agent, secondary use in gasification fluidized bed, save resources.