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A platform for research: civil engineering, architecture and urbanism
CARBON-BASED OXYGEN-ENRICHED COMBUSTION METHOD FOR RECIRCULATION OF FLUE GAS FROM CEMENT KILN
To provide a carbon-based oxygen-enriched combustion method for recirculation of flue gas from a cement kiln.SOLUTION: A system includes a dedicated pressurized oxygen gas preparation device, a pressurized oxygen gas buffer tank, an atmospheric-pressure oxygen gas preparation device, an atmospheric-pressure oxygen gas buffer tank, a first dedicated efficient oxygen gas/recirculating flue gas mixer, a second dedicated efficient oxygen gas/recirculating flue gas mixer, a third dedicated efficient oxygen gas/recirculating flue gas mixer, a recirculating flue gas fan, a carbon-based air fan, and a recirculating flue gas recovery device. Carbon dioxide in a flue gas of a cement kiln is concentrated and enriched, the carbon dioxide-rich recirculating flue gas of the cement kiln is mixed with the pressurized oxygen to obtain carbon-based oxygen-enriched gas, and the recirculating flue gas is mixed with atmospheric-pressure oxygen gas to obtain carbon-based air which serves as combustion-supporting gas of the cement kiln. In this way, the radiating power in the cement kiln can be greatly enhanced, thereby achieving a significant effect of energy saving. Moreover, the generation and emissions of NOx can be greatly reduced, and the collection of carbon dioxide can be facilitated.SELECTED DRAWING: Figure 1
【課題】セメント窯炉における煙道ガス循環用の炭素系酸素富化燃焼方法を提供する。【解決手段】システムは、専用圧力酸素ガス製造装置、圧力酸素ガスバッファタンク、常圧酸素ガス製造装置、常圧酸素ガスバッファタンク、第一専用高効率酸素ガス／循環煙道ガス混合器、第二専用高効率酸素ガス／循環煙道ガス混合器、第三専用高効率酸素ガス／循環煙道ガス混合器、循環煙道ガスファン、炭素系空気ファン及び循環煙道ガス回収装置を含む。セメント窯炉の煙道ガスにおける二酸化炭素を濃縮富化させ、二酸化炭素に富むセメント窯炉の循環煙道ガスと圧力酸素ガスを混合して炭素系酸素富化ガスとし、循環煙道ガスと常圧酸素ガスを混合して炭素系空気とし、セメント窯炉の助燃ガスとして、セメント窯炉内の放射強度を大幅に向上させ、顕著な省エネルギー効果を達成し、且つＮＯｘの生成と排出を大幅に低減させ、二酸化炭素の捕集を容易にすることができる。【選択図】図１
CARBON-BASED OXYGEN-ENRICHED COMBUSTION METHOD FOR RECIRCULATION OF FLUE GAS FROM CEMENT KILN
To provide a carbon-based oxygen-enriched combustion method for recirculation of flue gas from a cement kiln.SOLUTION: A system includes a dedicated pressurized oxygen gas preparation device, a pressurized oxygen gas buffer tank, an atmospheric-pressure oxygen gas preparation device, an atmospheric-pressure oxygen gas buffer tank, a first dedicated efficient oxygen gas/recirculating flue gas mixer, a second dedicated efficient oxygen gas/recirculating flue gas mixer, a third dedicated efficient oxygen gas/recirculating flue gas mixer, a recirculating flue gas fan, a carbon-based air fan, and a recirculating flue gas recovery device. Carbon dioxide in a flue gas of a cement kiln is concentrated and enriched, the carbon dioxide-rich recirculating flue gas of the cement kiln is mixed with the pressurized oxygen to obtain carbon-based oxygen-enriched gas, and the recirculating flue gas is mixed with atmospheric-pressure oxygen gas to obtain carbon-based air which serves as combustion-supporting gas of the cement kiln. In this way, the radiating power in the cement kiln can be greatly enhanced, thereby achieving a significant effect of energy saving. Moreover, the generation and emissions of NOx can be greatly reduced, and the collection of carbon dioxide can be facilitated.SELECTED DRAWING: Figure 1
【課題】セメント窯炉における煙道ガス循環用の炭素系酸素富化燃焼方法を提供する。【解決手段】システムは、専用圧力酸素ガス製造装置、圧力酸素ガスバッファタンク、常圧酸素ガス製造装置、常圧酸素ガスバッファタンク、第一専用高効率酸素ガス／循環煙道ガス混合器、第二専用高効率酸素ガス／循環煙道ガス混合器、第三専用高効率酸素ガス／循環煙道ガス混合器、循環煙道ガスファン、炭素系空気ファン及び循環煙道ガス回収装置を含む。セメント窯炉の煙道ガスにおける二酸化炭素を濃縮富化させ、二酸化炭素に富むセメント窯炉の循環煙道ガスと圧力酸素ガスを混合して炭素系酸素富化ガスとし、循環煙道ガスと常圧酸素ガスを混合して炭素系空気とし、セメント窯炉の助燃ガスとして、セメント窯炉内の放射強度を大幅に向上させ、顕著な省エネルギー効果を達成し、且つＮＯｘの生成と排出を大幅に低減させ、二酸化炭素の捕集を容易にすることができる。【選択図】図１
CARBON-BASED OXYGEN-ENRICHED COMBUSTION METHOD FOR RECIRCULATION OF FLUE GAS FROM CEMENT KILN
セメント窯炉における煙道ガス循環用の炭素系酸素富化燃焼方法
WEI TING (author) / HE SENLIN (author) / LI HONGMAN (author) / ZHANG HANPING (author) / YANG ZHENGJUN (author) / ZHU HANG (author) / ZHANG YUNFENG (author)
2023-02-09
Patent
Electronic Resource
Japanese
IPC:
C04B
Kalk
,
LIME
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