PELLETS ARI KUGADZIRWA SEI?

Kuenzaniswa nehumwe matekinoroji ekusimudzira biomass, pelletisation inzira inonyatso shanda, yakapusa uye yakaderera mutengo. Matanho mana akakosha mukati memaitiro aya ndeaya:

• pre-kugaya zvinhu mbishi
• kuomeswa kwezvinhu zvakasvibiswa
•kugaya zvinhu
• densification yechigadzirwa

Aya matanho anogonesa kugadzirwa kwehuni ine homogeneous ine yakaderera humidity uye yakakwirira simba density. Kana yakaoma mbishi zvinhu zviripo, kugaya chete uye densification inodiwa.

Parizvino 80% yemapellets anogadzirwa pasi rose anogadzirwa kubva muhuni biomass. Muzviitiko zvakawanda, zvigadzirwa kubva pazvigayo zvemasaha senge guruva uye shavings zvinoshandiswa. Mamwe magiyo mahombe epellet anoshandisawo huni hwakaderera sehuni. Huwandu huri kuwedzera hwema pellets anotengeswa ari kugadzirwa kubva mumichero isina chinhu (kubva kuoil palm), bagasse, uye mupunga.

Tekinoroji yekugadzira yakakura

Chirimwa chikuru chepasi rose maererano nekubuda kwepellet ndiyo Georgia Biomass Plant (USA) yakavakwa naAndritz. Chirimwa ichi chinoshandisa matanda anokura nekukurumidza anogadzirwa muminda yepine. Iwo matanda anobviswa, akachekwa, akaomeswa uye akagayiwa asati aita densification mumagayo epellet. Iyo Georgia Biomass Plant inokwana 750 000 tonnes emapellets pagore. Kudiwa kwehuni kwechirimwa ichi kwakafanana neyepakati pegayo remapepa.

Tekinoroji yekugadzira diki

Tekinoroji diki-diki yekugadzira pellet inowanzoenderana nesawdust shavings uye kure-kuchekwa kubva kumasaha kana matanda kugadzira maindasitiri (Vagadziri vepasi, magonhi uye fenicha nezvimwewo) izvo zvinowedzera kukosha kune avo by-zvigadzirwa nekushandura kuita pellets. Dry raw material inogayiwa, uye kana zvichidikanwa, inogadziridzwa kuti inyatso hunyoro hwakakodzera uye tembiricha yakakwana ne pre-conditioning ne steam isati yapinda muchigayo painoiswa densified. Inotonhodza mushure meguyo inoderedza tembiricha yemafuta anopisa mushure mezvo ma pellets anosefa asati aiswa mumabhegi, kana kuendeswa kunopera kuchengetwa kwechigadzirwa.