AKHISHWA KANJANI AMAPHELETHI?

Uma kuqhathaniswa nobunye ubuchwepheshe bokuthuthukisa i-biomass, i-pelletisation iyinqubo esebenza kahle, elula futhi enezindleko eziphansi. Izinyathelo ezine ezibalulekile kule nqubo yilezi:

• ukugaya kuqala kwempahla eluhlaza
• ukomiswa kwempahla eluhlaza
•ukugaya impahla eluhlaza
• ukuminyana komkhiqizo

Lezi zinyathelo zivumela ukukhiqizwa kukaphethiloli olinganayo onomswakama ophansi kanye nokuminyana kwamandla aphezulu. Uma kwenzeka izinto ezomile zitholakala, ukugaya kanye nokuminyana kuphela kuyadingeka.

Njengamanje cishe amaphesenti angama-80 ama-pellets akhiqizwa emhlabeni wonke enziwe nge-woody biomass. Ezimweni eziningi, kusetshenziswa imikhiqizo evela ezigayweni ezisaha ezifana nesaha kanye nokushefa. Ezinye izigayo ezinkulu ze-pellet nazo zisebenzisa izinkuni zenani eliphansi njengempahla eluhlaza. Inani elikhulayo lama-pellets adayiswayo enziwa ngezinto ezifana nenqwaba yezithelo ezingenalutho (kusuka ku-oil palm), i-bagasse, namakhoba elayisi.

Ubuchwepheshe bokukhiqiza ngezinga elikhulu

Isitshalo se-pellet esikhulu kunazo zonke emhlabeni mayelana nokuphuma kwe-pellet yi-Georgia Biomass Plant (USA) eyakhiwe ngu-Andritz. Lesi sitshalo sisebenzisa izingodo ezikhula ngokushesha ezikhiqizwa emasimini kaphayini. Izingodo ziyasuswa, zichotshozwe, zomiswe futhi zigaywe ngaphambi kokuminyana ezigayweni ze-pellet. Umthamo we-Georgia Biomass Plant ungamathani angu- 750 000 amapellets ngonyaka. Isidingo sokhuni salesi sitshalo sifana nesomshini wokugaya amaphepha.

Ubuchwepheshe bokukhiqiza obuncane

Ubuchwepheshe bezinga elincane lokukhiqiza ama-pellet ngokuvamile busekelwe ku-sawdust shavings kanye nokusikwa okuvela kumasaha noma izimboni zokucubungula ukhuni (Abakhiqizi bephansi, iminyango kanye nefenisha njll.) okwengeza inani emikhiqizweni yabo ngokushintsha ama-pellets. Impahla ewuketshezi eyomile iyagaywa, futhi uma kudingeka, ilungiselwe inani elifanele lomswakamo kanye nezinga lokushisa elilungile ngokuyilungisa kusengaphambili ngesitimu ngaphambi kokungena emshinini we-pellet lapho iminyene khona. Isipholisa ngemva kwesigayo se-pellet sinciphisa izinga lokushisa lama-pellets ashisayo emva kwalokho ama-pellets ahlungwa ngaphambi kokuba afakwe esikhwameni, noma adluliselwe ekugcineni komkhiqizo ophelile.