Termotehnika

Numerička optimizacija procesa u ložištu sa aspekata emisije NOx i efikasnosti energetskog kotla

• Razvijen je matematički model, namenjen za predviđanje procesa u energetskim parnim kotlovima TE Kostolac B tangencijalno loženim sprašenim lignitom. Model je primenjen za numeričku analizu rada kotla radi smanjenja emisije NOx, uz istovremeno održavanje visokog stepena korisnosti kotla. Kompleksni dvofazni tok gas-čestice modeliran je Ojler-Lagranževim pristupom. Povezivanje faza je ostvareno kuplovanjem pomoću PSI-Cell koncepta. Radi ostvarivanja željenih analiza, ugrađen je pod-model formiranja/destrukcije NO, unutar složenog koda za sagorevanje, koji se koristi za predviđanje emisije na izlazu iz ložišta. Modelirani su termički i gorivi NO, kao najuticajniji oksidi azota pri sagorevanju ugljenog praha. Proračunski program je razvijen radi lakše upotrebe od strane inženjerskog osoblja prilikom analiza procesa u kotlovskim postrojenjima. Numeričke simulacije su izvršene za različite radne uslove kotla, prilikom loženja lignitom sa kopa Drmno. Suprotstavljeni zahtevi a smanjenjem emisije i efikasnim sagorevanjem, sa osvrtom na bezbedan rad pregrejača pare često zahtevaju rad kotla u uskim granicama radnih parametara, koji su utvrđeni pomoću termičkog proračuna kotla.

• Ključne reči
  matematički model, ugljeni prah, termički proračun, ložište kotla, emisija NOx
• Numerička optimizacija procesa u ložištu sa aspekata emisije NOx i efikasnosti energetskog kotla
• Stranice
  61 - 74
• Datum slanja
  04/10/2013
• Datum revizije
  11/10/2013
• Datum prihvatanja
  12/15/2013
• BIBLID
  0350-218X, 39 (2013), 1-2, 61-74
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