Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Lime graded oxygen-enriched calcining process
The invention relates to a lime grading oxygen-enriched calcining process, which comprises the following steps: 1) putting limestone into a calcining chamber of a lime shaft kiln, enabling the limestone to flow from top to bottom for calcining treatment, and discharging the calcined product from a discharge port at the bottom of the calcining chamber; and 2) calculating the amount of fuel required by calcining treatment according to the input amount of the limestone, and respectively adding the required fuel into the calcining chamber from different height positions of the calcining chamber for combustion in a manner that the addition amount is gradually increased from top to bottom in the vertical direction so as to provide heat required by the calcining treatment. According to the lime graded oxygen-enriched calcining process, the lime shaft kiln is divided into a plurality of combustion sections, then the fuel and the combustion-supporting gas are introduced into the lime shaft kiln in sections, CO2 is enriched at the exhaust port in the bottom of the kiln, meanwhile, the inhibition effect of high-concentration CO2 on CaCO3 decomposition is remarkably reduced, and the influence on the production efficiency of the lime shaft kiln is small.
一种石灰分级富氧煅烧工艺，该工艺包括以下步骤：1)将石灰石投入石灰竖窑的煅烧膛内，并自上而下流动进行煅烧处理，煅烧后的产物从煅烧膛底部的卸料口排出；2)根据石灰石的投入量计算煅烧处理所需燃料量，在竖直方向上，以添加量自上而下逐渐增加的方式将所需燃料分别从煅烧膛的不同高度位置添加至煅烧膛内部进行燃烧以提供煅烧处理所需热量。本发明提供的一种石灰分级富氧煅烧工艺，将石灰竖窑分为多个燃烧段，然后向石灰竖窑内分段通入燃料以及助燃气体，在窑底排气口富集CO2的同时，显著减小高浓度CO2对CaCO3分解的抑制作用，对石灰竖窑的生产效率影响较小。
Lime graded oxygen-enriched calcining process
The invention relates to a lime grading oxygen-enriched calcining process, which comprises the following steps: 1) putting limestone into a calcining chamber of a lime shaft kiln, enabling the limestone to flow from top to bottom for calcining treatment, and discharging the calcined product from a discharge port at the bottom of the calcining chamber; and 2) calculating the amount of fuel required by calcining treatment according to the input amount of the limestone, and respectively adding the required fuel into the calcining chamber from different height positions of the calcining chamber for combustion in a manner that the addition amount is gradually increased from top to bottom in the vertical direction so as to provide heat required by the calcining treatment. According to the lime graded oxygen-enriched calcining process, the lime shaft kiln is divided into a plurality of combustion sections, then the fuel and the combustion-supporting gas are introduced into the lime shaft kiln in sections, CO2 is enriched at the exhaust port in the bottom of the kiln, meanwhile, the inhibition effect of high-concentration CO2 on CaCO3 decomposition is remarkably reduced, and the influence on the production efficiency of the lime shaft kiln is small.
一种石灰分级富氧煅烧工艺，该工艺包括以下步骤：1)将石灰石投入石灰竖窑的煅烧膛内，并自上而下流动进行煅烧处理，煅烧后的产物从煅烧膛底部的卸料口排出；2)根据石灰石的投入量计算煅烧处理所需燃料量，在竖直方向上，以添加量自上而下逐渐增加的方式将所需燃料分别从煅烧膛的不同高度位置添加至煅烧膛内部进行燃烧以提供煅烧处理所需热量。本发明提供的一种石灰分级富氧煅烧工艺，将石灰竖窑分为多个燃烧段，然后向石灰竖窑内分段通入燃料以及助燃气体，在窑底排气口富集CO2的同时，显著减小高浓度CO2对CaCO3分解的抑制作用，对石灰竖窑的生产效率影响较小。
Lime graded oxygen-enriched calcining process
一种石灰分级富氧煅烧工艺
ZHU RONGJIA (Autor:in) / ZHOU HAOYU (Autor:in) / WEI JINCHAO (Autor:in) / LIU QIAN (Autor:in) / LI QIAN (Autor:in)
11.10.2024
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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