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Rotary kiln calcining system and method
The invention discloses a rotary kiln calcining system and method. The calcining system comprises a rotary kiln; a discharging opening of the preheating feeding bin is communicated with a feeding opening of the rotary kiln; a feed port of the finished product cooling bin is communicated with a discharge port of the rotary kiln; an air inlet of the cooling fan is communicated with an exhaust port of the preheating feeding bin, and an exhaust port of the cooling fan is communicated with the finished product cooling bin; after the rotary kiln exhausts the calcining flue gas to preheat the material to be calcined in the preheating feed bin, the calcining flue gas in a preset proportion is extracted by the cooling fan to cool the calcined material in the finished product cooling bin, and the calcined material is mixed with the calcining flue gas in the rotary kiln, so that a high-temperature low-oxygen calcining atmosphere is formed in the rotary kiln. According to the calcining system, a high-temperature and low-oxygen calcining atmosphere is formed in the rotary kiln, the chemical reaction potential of nitrogen and oxygen can be reduced, and then emission of nitric oxide in the calcining process of the rotary kiln is reduced.
本发明公开了一种回转窑煅烧系统和方法，煅烧系统包括：回转窑；预热给料仓，预热给料仓的出料口与回转窑的进料口连通；成品冷却仓，成品冷却仓的进料口与回转窑的出料口连通；冷却风机，冷却风机的进气口与预热给料仓的排气口连通，冷却风机的排气口与成品冷却仓连通；回转窑排出煅烧烟气预热预热给料仓内待煅烧的物料后，再经冷却风机抽取预设比例的煅烧烟气冷却成品冷却仓内已煅烧的物料，并与回转窑内的煅烧烟气混合，以在回转窑内形成高温低氧的煅烧气氛。本发明的煅烧系统在回转窑内形成高温低氧的煅烧气氛，能够使氮气与氧气的反应化学势降低，进而降低回转窑煅烧过程中氮氧化物的排放。
Rotary kiln calcining system and method
The invention discloses a rotary kiln calcining system and method. The calcining system comprises a rotary kiln; a discharging opening of the preheating feeding bin is communicated with a feeding opening of the rotary kiln; a feed port of the finished product cooling bin is communicated with a discharge port of the rotary kiln; an air inlet of the cooling fan is communicated with an exhaust port of the preheating feeding bin, and an exhaust port of the cooling fan is communicated with the finished product cooling bin; after the rotary kiln exhausts the calcining flue gas to preheat the material to be calcined in the preheating feed bin, the calcining flue gas in a preset proportion is extracted by the cooling fan to cool the calcined material in the finished product cooling bin, and the calcined material is mixed with the calcining flue gas in the rotary kiln, so that a high-temperature low-oxygen calcining atmosphere is formed in the rotary kiln. According to the calcining system, a high-temperature and low-oxygen calcining atmosphere is formed in the rotary kiln, the chemical reaction potential of nitrogen and oxygen can be reduced, and then emission of nitric oxide in the calcining process of the rotary kiln is reduced.
本发明公开了一种回转窑煅烧系统和方法，煅烧系统包括：回转窑；预热给料仓，预热给料仓的出料口与回转窑的进料口连通；成品冷却仓，成品冷却仓的进料口与回转窑的出料口连通；冷却风机，冷却风机的进气口与预热给料仓的排气口连通，冷却风机的排气口与成品冷却仓连通；回转窑排出煅烧烟气预热预热给料仓内待煅烧的物料后，再经冷却风机抽取预设比例的煅烧烟气冷却成品冷却仓内已煅烧的物料，并与回转窑内的煅烧烟气混合，以在回转窑内形成高温低氧的煅烧气氛。本发明的煅烧系统在回转窑内形成高温低氧的煅烧气氛，能够使氮气与氧气的反应化学势降低，进而降低回转窑煅烧过程中氮氧化物的排放。
Rotary kiln calcining system and method
一种回转窑煅烧系统和方法
ZHANG YAPENG (author) / JI BIN (author) / PAN WEN (author) / MIAO ZHENPING (author) / ZHAO ZHIXING (author) / ZHU JIANBO (author) / ZHANG LIN (author) / CHEN SHAOGUO (author) / MA HUAIYING (author) / WANG DONGQING (author)
2022-07-22
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
| European Patent Office | 2015