Lub tshuab biomass pellet ua haujlwm li cas?

Lub tshuab biomass pellet siv lub hauv paus ntsiab lus ntawm kev sib cuam tshuam ntawm extrusion quab yuam thiab kev sib txhuam ntawm lub log siab thiab tuag los tsim cov khoom. Tsis tas yuav ntxiv cov additives lossis binders rau cov khoom thaum ua. Cov ntaub ntawv xws li straw muaj cov cellulose thiab lignin. Lignin yog cov qauv monomer hauv cov khoom siv thiab yog phenylpropanoid-hom polymer compound.

Nws muaj kev ua haujlwm ntawm cov phab ntsa ntawm tes thiab khi cellulose. Lignin yog amorphous, thiab nws qhov tseem ceeb yog insoluble nyob rau hauv ib qho hnyav ntawm chav tsev kub. Nws tsis muaj melting point, tab sis muaj ib tug softening point. Thaum qhov kub nce mus txog tus nqi tshwj xeeb, lignin softens thiab lub zog sib txuas ntxiv, thiab nyob rau hauv qhov kev txiav txim ntawm lub siab tshwj xeeb, nws cov cellulose molecular pawg yog dislocated, deformed, thiab txuas ntxiv. Cov biomass uas nyob ib sab hauv yog meshed nrog ib leeg, recombined, thiab suppressed. tsim.

Ua tiav cov txheej txheem ntawm biomass pellets:
Raw khoom sau → raw khoom crushing → raw khoom kom qhuav → mechanical granulation thiab molding → mechanical cooling → bagging for sale. Nyob ntawm lub sijhawm sau qoob loo ntawm cov qoob loo, cov khoom siv raw yuav tsum tau muab khaws cia rau hauv ntau lub sijhawm thiab tom qab ntawd crushed thiab tsim. Ceev faj tsis txhob ntim tam sim ntawd thaum tsim. Vim yog lub hauv paus ntsiab lus ntawm thermal expansion thiab contraction, tos 40 feeb kom txias ua ntej ntim rau kev thauj mus los.