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A platform for research: civil engineering, architecture and urbanism
Calcination method of double-hearth lime kiln by independently using blast furnace gas
The invention provides a calcining method for a double-hearth lime kiln by independently using blast furnace gas, which comprises the following steps: pressurizing the blast furnace gas to 45-50KPa through a gas pressurizing machine, wherein the heat value of the blast furnace gas is 800-950Kcal/m < 3 >; air and oxygen-enriched gas are mixed to obtain combustion-supporting air, then the combustion-supporting air is pressurized to 35-40 KPa through a combustion-supporting fan, and the oxygen content in the combustion-supporting air is 35%-65% by volume; the heat value C of the mixed gas obtained by mixing the combustion-supporting air and the blast furnace gas is 650-700 Kcal/m < 3 >; in the calcining area, combustion-supporting air and blast furnace gas are mixed and combusted to generate heat to thermally decompose the limestone; after the oxygen-enriched gas and the air are mixed according to the proportion, the calorific value C mixing is improved by improving the fuel concentration of the mixed gas of the combustion-supporting air and the blast furnace gas, so that the double-hearth lime kiln can independently use the blast furnace gas with low calorific value.
本申请提供了一种双膛石灰窑单独使用高炉煤气的煅烧方法，将高炉煤气通过煤气加压机加压至45‑50KPa，高炉煤气的热值为800‑950 Kcal/m3；将空气与富氧气体混合得到助燃风，然后将助燃风通过助燃风机加压至35‑40KPa，助燃风中的氧气含量为体积百分数35%‑65%；助燃风与高炉煤气混合后的混合气体的热值C混为650‑700 Kcal/m3；在煅烧区，助燃风与高炉煤气混合燃烧，产生热量使石灰石热分解；将富氧气体与空气按照比例混合后，通过提高助燃风与高炉煤气的混合气体的燃料浓度，提高了热值C混，使双膛石灰窑能够单独使用低热值的高炉煤气。
Calcination method of double-hearth lime kiln by independently using blast furnace gas
The invention provides a calcining method for a double-hearth lime kiln by independently using blast furnace gas, which comprises the following steps: pressurizing the blast furnace gas to 45-50KPa through a gas pressurizing machine, wherein the heat value of the blast furnace gas is 800-950Kcal/m < 3 >; air and oxygen-enriched gas are mixed to obtain combustion-supporting air, then the combustion-supporting air is pressurized to 35-40 KPa through a combustion-supporting fan, and the oxygen content in the combustion-supporting air is 35%-65% by volume; the heat value C of the mixed gas obtained by mixing the combustion-supporting air and the blast furnace gas is 650-700 Kcal/m < 3 >; in the calcining area, combustion-supporting air and blast furnace gas are mixed and combusted to generate heat to thermally decompose the limestone; after the oxygen-enriched gas and the air are mixed according to the proportion, the calorific value C mixing is improved by improving the fuel concentration of the mixed gas of the combustion-supporting air and the blast furnace gas, so that the double-hearth lime kiln can independently use the blast furnace gas with low calorific value.
本申请提供了一种双膛石灰窑单独使用高炉煤气的煅烧方法，将高炉煤气通过煤气加压机加压至45‑50KPa，高炉煤气的热值为800‑950 Kcal/m3；将空气与富氧气体混合得到助燃风，然后将助燃风通过助燃风机加压至35‑40KPa，助燃风中的氧气含量为体积百分数35%‑65%；助燃风与高炉煤气混合后的混合气体的热值C混为650‑700 Kcal/m3；在煅烧区，助燃风与高炉煤气混合燃烧，产生热量使石灰石热分解；将富氧气体与空气按照比例混合后，通过提高助燃风与高炉煤气的混合气体的燃料浓度，提高了热值C混，使双膛石灰窑能够单独使用低热值的高炉煤气。
Calcination method of double-hearth lime kiln by independently using blast furnace gas
一种双膛石灰窑单独使用高炉煤气的煅烧方法
SU JIXIANG (author) / WANG ZHENCHENG (author) / ZENG SIBAO (author) / LIU YUANDONG (author) / JIA PEIGANG (author)
2022-11-11
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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