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3. 发明申请

WO2012126387A8 PROCESS AND APPARATUS FOR CALCINING CEMENT CLINKER WITH PRE-HEATING AND PRE-DECOMPOSITION AT HIGH SOLID-TO-GAS RATIO 审中-公开
标题翻译：用于在高固体比率下预加热和预分解计算水泥料的方法和装置
公开(公告)号：WO2012126387A8
公开(公告)日：2012-11-22
申请号：PCT/CN2012072821
申请日：2012-03-22
申请人： UNIV XI AN ARCHITECTURE & TECH , SHAANXI DELONG CEMENT HIGH TECH DEV LTD COMPANY , XU DELONG , CHEN YANXIN , LI HUI , CHENG FUAN , WANG SHIJUN , JI YING , LI ZHAOFENG , LIU NINGCHANG , CHEN HUIXIA
发明人： XU DELONG , CHEN YANXIN , LI HUI , CHENG FUAN , WANG SHIJUN , JI YING , LI ZHAOFENG , LIU NINGCHANG , CHEN HUIXIA
IPC分类号： C04B7/43 , F27D13/00 , F27D17/00
CPC分类号： C04B7/4476 , C04B7/43 , F27B7/20 , F27B7/2041 , F27D17/004 , F27D17/008
摘要： Disclosed is a process for calcining a cement clinker with pre-heating and pre-decomposition at a high solid-to-gas ratio. During the firing of the cement clinker, the cement raw materials first exchange heat with heated flue gas in a pre-heater having a high solid-to-gas ratio, and then enter an outer circulation decomposition furnace having a high solid-to-gas ratio to complete the decomposition of carbonates in the cement raw material. The materials after decomposition enter a rotary kiln for calcination, and the sufficiently calcined materials enter a cooler for cooling so as to complete the calcination of cement clinker. The present invention uses a heat treatment apparatus with crossing material flows at a high solid-to-gas ratio to pre-heat the raw materials, and at the same time recycles the enthalpy in the waste flue gas efficiently; it employs the outer circulation decomposition furnace at a high solid-to-gas ratio to complete the decomposition of the pre-heated cement raw materials in a suspension form, reduces effectively the temperature of waste gas discharged by the system and the heat consumption per unit cement clinker, improves the thermal efficiency of the system, the apparent decomposition ratio of the materials entering the kiln, the production per unit volume of the decomposition furnace and of the rotary kiln, enhances the heat stability of the decomposition furnace, and simultaneously decreases the discharge of harmful gases, such as SO2, NOx, etc.
摘要翻译：公开了一种以高固体与气体的比率煅烧具有预热和预分解的水泥熟料的方法。在水泥熟料的烧制过程中，水泥原料首先与固体与气体比例高的预热器中的加热烟道气进行热交换，然后进入具有高固体 - 气体的外循环分解炉比例来完成水泥原料中碳酸盐的分解。分解后的材料进入用于煅烧的回转窑，并将足够煅烧的材料进入冷却器进行冷却，以完成水泥熟料的煅烧。本发明使用具有交叉材料的热固化装置以高固相比流动以预热原料，同时有效地回收废烟气中的焓; 采用高固相比的外循环分解炉，以悬浮形式完成预热水泥原料的分解，有效降低了系统排放废气的温度和每单位的热消耗水泥熟料，提高系统的热效率，进入窑的物质的表观分解率，分解炉和回转窑的每单位体积的产量，提高了分解炉的热稳定性，同时降低了排放有害气体，如SO2，NOx等

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