Study on two-stage feeding using pulse pneumatic conveying system for woody biomass fast pyrolysis
WU Yu
SI Hui
WANG Wenliang
WANG Xiao
Abstract：To solve the problem of regurgitation during fast pyrolysis feeding process,a two-stage of pulse pneumatic conveying feeding test apparatus was developed.To get the frequency controlling methods of feeding rate,a test which adopting woody biomass saw dust as conveying materials was carried out.Based on the test device,the frequency matching scheme of pneumatic conveying was put forward and optimized,and single factor experiment of the frequency of the two-stage nozzles which is the key factor was carried out.The results show that the mass flow rate can be increased by intermittently closing primary nozzle A (no more than residence time which is about 0.7～0.9 s or decreasing the diameter of nozzle.Two-stage frequency optimal matching scheme and matching time of cyclic progress was determined that nozzle A opened and B closed (0.8～1.2 s)—nozzle A opened and B opened (0.2～0.5 s)—nozzle A closed and B opened (0.7～0.9 s)—nozzle A opened and B opened (0.8～1.0 s).The average larch particle mass flow rate of this equipment under the scheme is about 21 g/min.
Keywords：pneumatic conveypulselarch sawpyrolysisfrequency matching
Publication Date：2017-01-01
Online Publishing Date：2026-05-22(First online date of this platform, not the publication date of the document)
Pages：6( 67-71,76 )