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Coal gas switching system and method of Maerz double-chamber lime kiln
The gas switching system comprises a converter gas pipeline, a cooling fan and a low-pressure nitrogen pipeline, and the converter gas pipeline is connected with a spray gun of a left kiln chamber through a left kiln chamber rear gas valve and connected with a spray gun of a right kiln chamber through a right kiln chamber rear gas valve; an air outlet of the cooling fan is connected with a spray gun of the left kiln chamber through a left kiln chamber cold air valve and is connected with a spray gun of the right kiln chamber through a right kiln chamber cold air valve; the low-pressure nitrogen pipeline is connected with a gas outlet end pipeline of the left kiln chamber rear gas valve through the left kiln chamber anti-explosion valve and connected with a gas outlet end pipeline of the right kiln chamber rear gas valve through the right kiln chamber anti-explosion valve. The invention also provides a gas switching method. According to the invention, air is used for replacing nitrogen to cool the spray gun, so that the content of nitrogen oxide in flue gas is reduced, the pollutant treatment cost is reduced, the consumption of combustion air can be reduced, and heat loss caused by blowing a large amount of nitrogen is avoided, thereby reducing the production cost of the Merz double-hearth lime kiln.
本发明公开了一种麦尔兹双膛石灰窑的煤气切换系统，包括转炉煤气管道、冷却风机和低压氮气管道，所述转炉煤气管道经左窑膛后煤气阀与左窑膛的喷枪连接并经右窑膛后煤气阀与右窑膛的喷枪连接；所述冷却风机出风口通过左窑膛冷风阀与左窑膛的喷枪连接并通过右窑膛冷风阀与右窑膛的喷枪连接；所述低压氮气管道通过左窑膛防爆阀与左窑膛后煤气阀的出气端管路连接并通过右窑膛防爆阀与右窑膛后煤气阀的出气端管路连接。本发明同时给出了煤气切换方法。本发明用空气替代氮气对喷枪进行冷却，不仅减少了烟气中的氮氧化物含量，降低了污染物处理成本，而且可减少助燃空气用量，避免大量吹入氮气造成的热量损失，从而降低了麦尔兹双膛石灰窑的生产成本。
Coal gas switching system and method of Maerz double-chamber lime kiln
The gas switching system comprises a converter gas pipeline, a cooling fan and a low-pressure nitrogen pipeline, and the converter gas pipeline is connected with a spray gun of a left kiln chamber through a left kiln chamber rear gas valve and connected with a spray gun of a right kiln chamber through a right kiln chamber rear gas valve; an air outlet of the cooling fan is connected with a spray gun of the left kiln chamber through a left kiln chamber cold air valve and is connected with a spray gun of the right kiln chamber through a right kiln chamber cold air valve; the low-pressure nitrogen pipeline is connected with a gas outlet end pipeline of the left kiln chamber rear gas valve through the left kiln chamber anti-explosion valve and connected with a gas outlet end pipeline of the right kiln chamber rear gas valve through the right kiln chamber anti-explosion valve. The invention also provides a gas switching method. According to the invention, air is used for replacing nitrogen to cool the spray gun, so that the content of nitrogen oxide in flue gas is reduced, the pollutant treatment cost is reduced, the consumption of combustion air can be reduced, and heat loss caused by blowing a large amount of nitrogen is avoided, thereby reducing the production cost of the Merz double-hearth lime kiln.
本发明公开了一种麦尔兹双膛石灰窑的煤气切换系统，包括转炉煤气管道、冷却风机和低压氮气管道，所述转炉煤气管道经左窑膛后煤气阀与左窑膛的喷枪连接并经右窑膛后煤气阀与右窑膛的喷枪连接；所述冷却风机出风口通过左窑膛冷风阀与左窑膛的喷枪连接并通过右窑膛冷风阀与右窑膛的喷枪连接；所述低压氮气管道通过左窑膛防爆阀与左窑膛后煤气阀的出气端管路连接并通过右窑膛防爆阀与右窑膛后煤气阀的出气端管路连接。本发明同时给出了煤气切换方法。本发明用空气替代氮气对喷枪进行冷却，不仅减少了烟气中的氮氧化物含量，降低了污染物处理成本，而且可减少助燃空气用量，避免大量吹入氮气造成的热量损失，从而降低了麦尔兹双膛石灰窑的生产成本。
Coal gas switching system and method of Maerz double-chamber lime kiln
一种麦尔兹双膛石灰窑的煤气切换系统及方法
LI YUANYE (author) / WU HAIDONG (author) / WANG HONGJUN (author) / ZHANG XUEWU (author) / WANG SIYUAN (author) / CHEN YAN (author) / ZHAO ZEDONG (author) / WANG YONGQIANG (author) / LU HUICHUN (author)
2024-02-06
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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