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Method and system for coupling coal gangue calcination and cement production
The invention discloses a coal gangue calcination and cement production coupling method and system, and belongs to the technical field of cement production. The method comprises the steps that heated coal gangue powder is ignited through a part of hot air separated from a tertiary air pipe and heated air obtained after air blasting and is heated and combusted in a suspended mode, and a high-temperature mixture is obtained; separating the high-temperature mixture to obtain high-temperature calcined coal gangue and high-temperature calcined flue gas; the normal-temperature coal gangue powder is heated through the high-temperature calcination flue gas to obtain heated coal gangue powder, and the heated coal gangue powder is cooled to obtain cooled calcination flue gas; inputting the cooled calcining flue gas into an airflow inlet of a suspension preheater of a cement kiln tail system, wherein the pressure of the cooled calcining flue gas is equal to that of a cooled calcining flue gas output part; heating and cooling the cement raw material step by step; purifying and discharging the cement raw material; the normal-temperature air is heated through the high-temperature calcined coal gangue to obtain heated air, and the heated air is cooled to obtain the low-temperature calcined coal gangue. The coal gangue can be ignited, combustion of the coal gangue can be maintained, and energy released after combustion of the coal gangue powder is utilized.
本申请公开了一种煤矸石煅烧与水泥生产耦合的方法及系统，属于水泥生产技术领域。方法包括：通过从三次风管分离的一部分热风以及鼓风后的升温空气对升温煤矸石粉点燃并悬浮加热燃烧，得到高温混合物；将高温混合物进行分离得到高温煅烧煤矸石和高温煅烧烟气；通过高温煅烧烟气对常温煤矸石粉加热得到升温煤矸石粉，自身被降温得到降温煅烧烟气；将降温煅烧烟气输入水泥窑尾系统的与降温煅烧烟气输出处等压所在悬浮预热器的气流进口，对水泥生料进行逐级升温，自身逐级降温并被净化后排出；通过高温煅烧煤矸石对常温空气进行加热得到升温空气，自身被降温得到低温煅烧煤矸石。本申请能够对煤矸石点燃及维持其燃烧，煤矸石粉燃烧后释放的能量被利用。
Method and system for coupling coal gangue calcination and cement production
The invention discloses a coal gangue calcination and cement production coupling method and system, and belongs to the technical field of cement production. The method comprises the steps that heated coal gangue powder is ignited through a part of hot air separated from a tertiary air pipe and heated air obtained after air blasting and is heated and combusted in a suspended mode, and a high-temperature mixture is obtained; separating the high-temperature mixture to obtain high-temperature calcined coal gangue and high-temperature calcined flue gas; the normal-temperature coal gangue powder is heated through the high-temperature calcination flue gas to obtain heated coal gangue powder, and the heated coal gangue powder is cooled to obtain cooled calcination flue gas; inputting the cooled calcining flue gas into an airflow inlet of a suspension preheater of a cement kiln tail system, wherein the pressure of the cooled calcining flue gas is equal to that of a cooled calcining flue gas output part; heating and cooling the cement raw material step by step; purifying and discharging the cement raw material; the normal-temperature air is heated through the high-temperature calcined coal gangue to obtain heated air, and the heated air is cooled to obtain the low-temperature calcined coal gangue. The coal gangue can be ignited, combustion of the coal gangue can be maintained, and energy released after combustion of the coal gangue powder is utilized.
本申请公开了一种煤矸石煅烧与水泥生产耦合的方法及系统，属于水泥生产技术领域。方法包括：通过从三次风管分离的一部分热风以及鼓风后的升温空气对升温煤矸石粉点燃并悬浮加热燃烧，得到高温混合物；将高温混合物进行分离得到高温煅烧煤矸石和高温煅烧烟气；通过高温煅烧烟气对常温煤矸石粉加热得到升温煤矸石粉，自身被降温得到降温煅烧烟气；将降温煅烧烟气输入水泥窑尾系统的与降温煅烧烟气输出处等压所在悬浮预热器的气流进口，对水泥生料进行逐级升温，自身逐级降温并被净化后排出；通过高温煅烧煤矸石对常温空气进行加热得到升温空气，自身被降温得到低温煅烧煤矸石。本申请能够对煤矸石点燃及维持其燃烧，煤矸石粉燃烧后释放的能量被利用。
Method and system for coupling coal gangue calcination and cement production
一种煤矸石煅烧与水泥生产耦合的方法及系统
JIU SHAOWU (author) / XU GUANGYOU (author) / CHEN YANXIN (author) / CHEN YONGBO (author) / HAN DING (author) / ZHANG HONGBO (author) / CHENG FENG (author) / ZHAO BO (author)
2024-08-06
Patent
Electronic Resource
Chinese
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