A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
CHLORINE BYPASS EXHAUST GAS TREATMENT METHOD AND CHLORINE BYPASS SYSTEM
PROBLEM TO BE SOLVED: To stably treat a chlorine bypass exhaust gas while suppressing equipment cost to be low.SOLUTION: While a part G1 of a combustion gas is cooled, extraction is performed from a kiln exhaust gas flow passage from the tail of a cement kiln 2 to the lowermost cyclone, and chlorine bypass dust D5 is recovered from extraction gases G3, G4. The gas G5 after the recovery is added with a powdery desulfurizing agent DA, and before the gas G6 after the addition of the desulfurizing agent is joined to the exhaust gas system of a cement firing apparatus, dust is removed from the gas after the addition of the desulfurizing agent. It is possible that a part of the dust removal dust D6 is added to the gas after the recovery of chlorine bypass dust as a part of the desulfurizing agent, and is added to cement. It is possible that, after the recovery of the chlorine bypass dust, the concentration of SOin the gas before and after the addition of the desulfurizing agent is measured, and the addition amount of the desulfurizing agent can be controlled in accordance with both SOconcentrations.SELECTED DRAWING: Figure 1
【課題】設備コストを低く抑えながら、塩素バイパス排ガスを安定して処理する。【解決手段】セメントキルン２の窯尻から最下段サイクロンに至るまでのキルン排ガス流路より燃焼ガスの一部Ｇ１を冷却しながら抽気し、抽気ガスＧ３、Ｇ４から塩素バイパスダストＤ５を回収した後のガスＧ５に粉体状の脱硫剤ＤＡを添加し、脱硫剤添加後のガスＧ６をセメント焼成装置の排ガス系統に合流させる前に、脱硫剤添加後のガスから除塵する。除塵ダストＤ６の一部を、脱硫剤の一部として塩素バイパスダストを回収した後のガスに添加してもよく、セメントに添加してもよい。塩素バイパスダストを回収した後、脱硫剤を添加する前後のガスのＳＯ2濃度を測定し、該両ＳＯ2濃度に応じて前記脱硫剤の添加量を制御することができる。【選択図】図１
CHLORINE BYPASS EXHAUST GAS TREATMENT METHOD AND CHLORINE BYPASS SYSTEM
PROBLEM TO BE SOLVED: To stably treat a chlorine bypass exhaust gas while suppressing equipment cost to be low.SOLUTION: While a part G1 of a combustion gas is cooled, extraction is performed from a kiln exhaust gas flow passage from the tail of a cement kiln 2 to the lowermost cyclone, and chlorine bypass dust D5 is recovered from extraction gases G3, G4. The gas G5 after the recovery is added with a powdery desulfurizing agent DA, and before the gas G6 after the addition of the desulfurizing agent is joined to the exhaust gas system of a cement firing apparatus, dust is removed from the gas after the addition of the desulfurizing agent. It is possible that a part of the dust removal dust D6 is added to the gas after the recovery of chlorine bypass dust as a part of the desulfurizing agent, and is added to cement. It is possible that, after the recovery of the chlorine bypass dust, the concentration of SOin the gas before and after the addition of the desulfurizing agent is measured, and the addition amount of the desulfurizing agent can be controlled in accordance with both SOconcentrations.SELECTED DRAWING: Figure 1
【課題】設備コストを低く抑えながら、塩素バイパス排ガスを安定して処理する。【解決手段】セメントキルン２の窯尻から最下段サイクロンに至るまでのキルン排ガス流路より燃焼ガスの一部Ｇ１を冷却しながら抽気し、抽気ガスＧ３、Ｇ４から塩素バイパスダストＤ５を回収した後のガスＧ５に粉体状の脱硫剤ＤＡを添加し、脱硫剤添加後のガスＧ６をセメント焼成装置の排ガス系統に合流させる前に、脱硫剤添加後のガスから除塵する。除塵ダストＤ６の一部を、脱硫剤の一部として塩素バイパスダストを回収した後のガスに添加してもよく、セメントに添加してもよい。塩素バイパスダストを回収した後、脱硫剤を添加する前後のガスのＳＯ2濃度を測定し、該両ＳＯ2濃度に応じて前記脱硫剤の添加量を制御することができる。【選択図】図１
CHLORINE BYPASS EXHAUST GAS TREATMENT METHOD AND CHLORINE BYPASS SYSTEM
塩素バイパス排ガスの処理方法及び塩素バイパスシステム
TERASAKI JUNICHI (author) / UENO NAOKI (author)
2017-02-09
Patent
Electronic Resource
Japanese
IPC:
C04B
Kalk
,
LIME
/
B01D
SEPARATION
,
Trennen
/
F27D
Einzelheiten oder Zubehör für Industrieöfen, Schachtöfen, Brennöfen oder Retorten, soweit sie nicht auf eine Ofenart eingeschränkt sind
,
DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
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