Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
The invention relates to a coal gangue decarburization process which comprises the following steps of: 1, crushing, grinding and drying a coal gangue raw material; 2, fully premixing the coal gangue raw material treated in the step 1 with combustion-supporting gas in a mixing nozzle, spraying the mixture into a reaction chamber through the mixing nozzle, and before the mixture is sprayed into the reaction chamber, igniting and heating the mixture through an auxiliary fuel nozzle of the reaction chamber, and then spraying the mixture into the reaction chamber, so as to enable the coal gangue raw material to be subjected to combustion reaction in the reaction chamber for oxidation and decarburization; and 3, after the combustion reaction, feeding high-temperature flue gas, small-particle coal gangue powder and large-particle coal gangue powder into a settling chamber, enabling the large-particle coal gangue powder to fall into the settling chamber due to the dead weight, enabling the high-temperature flue gas carrying the small-particle coal gangue powder to enter gas-solid separation equipment, separating the small-particle coal gangue powder and the flue gas in the gas-solid separation equipment, and using the obtained small-particle coal gangue powder for subsequent production. The coal gangue powder in the process is large in reaction surface area, the reaction is faster and more uniform, decarburization is uniform, the decarburization efficiency is high, and the productivity is high.
本公开涉及一种煤矸石脱碳工艺，步骤一，将煤矸石原料进行破碎、磨细、干燥处理；步骤二，将步骤一处理后的煤矸石原料在混合喷嘴内与助燃气体充分预混合，并通过混合喷嘴喷入反应室，喷入反应室之前，先通过反应室的辅助燃料喷嘴点火升温，再喷入，使得煤矸石原料在反应室中燃烧反应，进而氧化脱碳；步骤三：燃烧反应后，高温烟气、小颗粒煤矸石粉、大颗粒煤矸石粉进入沉降室，大颗粒煤矸石粉因自重落入沉降室，高温烟气带着小颗粒煤矸石粉进入气固分离设备，在气固分离设备中实现小颗粒煤矸石粉和烟气的分离，得到的小颗粒煤矸石粉可用于后续生产使用。本工艺中煤矸石粉反应表面积大，反应更迅速更均匀，脱碳均匀且脱碳效率高，生产率高。
The invention relates to a coal gangue decarburization process which comprises the following steps of: 1, crushing, grinding and drying a coal gangue raw material; 2, fully premixing the coal gangue raw material treated in the step 1 with combustion-supporting gas in a mixing nozzle, spraying the mixture into a reaction chamber through the mixing nozzle, and before the mixture is sprayed into the reaction chamber, igniting and heating the mixture through an auxiliary fuel nozzle of the reaction chamber, and then spraying the mixture into the reaction chamber, so as to enable the coal gangue raw material to be subjected to combustion reaction in the reaction chamber for oxidation and decarburization; and 3, after the combustion reaction, feeding high-temperature flue gas, small-particle coal gangue powder and large-particle coal gangue powder into a settling chamber, enabling the large-particle coal gangue powder to fall into the settling chamber due to the dead weight, enabling the high-temperature flue gas carrying the small-particle coal gangue powder to enter gas-solid separation equipment, separating the small-particle coal gangue powder and the flue gas in the gas-solid separation equipment, and using the obtained small-particle coal gangue powder for subsequent production. The coal gangue powder in the process is large in reaction surface area, the reaction is faster and more uniform, decarburization is uniform, the decarburization efficiency is high, and the productivity is high.
本公开涉及一种煤矸石脱碳工艺，步骤一，将煤矸石原料进行破碎、磨细、干燥处理；步骤二，将步骤一处理后的煤矸石原料在混合喷嘴内与助燃气体充分预混合，并通过混合喷嘴喷入反应室，喷入反应室之前，先通过反应室的辅助燃料喷嘴点火升温，再喷入，使得煤矸石原料在反应室中燃烧反应，进而氧化脱碳；步骤三：燃烧反应后，高温烟气、小颗粒煤矸石粉、大颗粒煤矸石粉进入沉降室，大颗粒煤矸石粉因自重落入沉降室，高温烟气带着小颗粒煤矸石粉进入气固分离设备，在气固分离设备中实现小颗粒煤矸石粉和烟气的分离，得到的小颗粒煤矸石粉可用于后续生产使用。本工艺中煤矸石粉反应表面积大，反应更迅速更均匀，脱碳均匀且脱碳效率高，生产率高。
Coal gangue decarburization process
一种煤矸石脱碳工艺
14.05.2021
Patent
Elektronische Ressource
Chinesisch
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