MER Hpung: Twin-Shaft Kiln a bungli galaw ai ladat hpe kadun dawk tsun dan ai
Twin-shaft kiln a core structure gaw, shada da matut mahkai ai dingyang n-gun lahkawng (Shaft A hte Shaft B) lawm nna, dingyang n-gun yawng gaw lagaw n-gun kaji hpe zing la ai. Shaft lahkawng a lawu daw ni hpe channel langai hku nna matut da nna, shanhte a bungli ni hpe aten kadun laman galai shai ai lam hpe hkam sha lu na matu, ntsa kaw reversing device langai mi hpe jung da ai. Dai wan wut ai shara a lapran daw gaw calcining zone rai nna, lawu de gaw n-gun dat dat ai jak hpe bang da nna, ntsa de gaw n-gun dat hte wan n-gun dat dat ai jak ni hpe bang da ai. Shi a hkrang shapraw ai madung gaw, "alternate calcination hte waste heat recovery" hku nna, 80% jan na thermal efficiency hpe lu la na matu, n-gun hpe atsawm sha jai lang lu na matu rai nga ai.
Bungli galaw ai npawt tara gaw "shaft lahkawng a lapran na synergy hte periodic reversal" ngu ai logic hpe madung tawn nna, dai hkrak ai ladat hpe galai shai ai cycle lahkawng hku garan nna (cycle langai mi gaw minit 8-12 daram na ai):
Shawng nnan na daw (Shaft A gaw Calcination galaw na matu, Shaft B gaw shawng nnan katsi/katsi na matu):
Shaft A a lawu daw na wan wut jak hku nna wan sau hpe bang nna wan nat ai majaw, 1200-1300℃daram n-gun ja ai wan n-gun hpe shapraw lu ai. Dai n-gun ja ai-n-gun ja ai wan n-gun gaw Shaft A hku nna ntsa de lwi wa nna, ntsa kaw nna jat bang da ai nlung hpe calcining galaw nna, preheating galaw ai majaw, nlung gaw n-gun yawm mat ai lam hpe loi loi hte ngut kre hkra galaw lu ai. Dai hpang, nbung n-gun kaba ai wan n-gun gaw, wan n-gun lahkawng a ntsa kaw na matut mahkai ai lam hku nna, Shaft B a lawu daw de shang wa nna, Shaft B kata na limestone hpe matut nna shawng nnan lang n-gun n-gun n-gun hpe bai lu la na matu, n-gun n-gun n-gun n-nga ai wan n-gun hpe bai lu la na matu galaw ai. Dai aten hta, Shaft B a ntsa kaw nna katsi ai nbung shang wa nna, Shaft B kata na calcined quicklime hpe katsi shangun na matu lawu de lwi wa ai. Ndai lahkam ngut ai shaloi, Shaft A kaw na calcined quicklime hpe lawu kaw na shapraw kau nna, Shaft B kaw na arung arai ni hpe hkum tsup hkra shawng n-gun dat dat ai.
Lahkawng ngu na daw (Shaft B gaw Calcination galaw na matu, Shaft A gaw shawng nnan katsi/katsi na matu):
Shaft lahkawng a bungli ni hpe reversing device hku nna galai shai kau ai. Ya gaw Shaft B a lawu daw kaw nna wan sau hpe bang nna wan nat kau ai rai nna, n-gun ja ai -n-gun rawng ai wan sau gaw Shaft B hku nna ntsa de lwi lung wa nna, dai arai ni hpe calcine galaw ai, dai hpang Shaft A de shang nna, nnan bang da ai limestone hpe shawng katsi shangun ai. Shaft A a ntsa kaw nna katsi ai nbung shang wa nna, Shaft A kata na calcined quicklime hpe katsi shangun nna, katsi ai nbung gaw Shaft B a matu wan hkru ai nbung hku nna galaw ya ai. Dai lam yawng hta, flue gas a n-gun hte quicklime a sensible heat hpe hkum tsup hkra bai lu la nna jai lang lu ai majaw, unit product a n-gun jai lang ai lam hpe grai shayawm ya lu ai.
