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水泥窯熱生料脫硫技術的特點是什么？

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2022-05-06

水泥窯熱生料**脫硫技術針對傳統的水泥窯干法脫硫技術存在的問題，開發了一種水泥窯熱生料**脫硫技術。該技術在傳統采用爐熱生料干法脫硫的基礎上，通過基于計算流體動力學（CFD）數值模擬等手段，優化了水泥窯干法脫硫系統，顯著提升了脫硫反應效率。具體來講，該技術具有如下特點：（1）強化了熱生料與煙氣中SO2的混合效果。通過CFD模擬等手段，對熱生料取料位置、系統優化布置、熱生料喂入位置等進行CFD模擬優化，促*了熱生料與煙氣中SO2的混合，有助于提高脫硫反應效率。

Aiming at the problems existing in the traditional dry desulfurization technology of cement kiln, a hot raw meal desulfurization technology of cement kiln is developed. Based on the traditional dry desulfurization with furnace hot raw meal, this technology optimizes the dry desulfurization system of cement kiln by means of computational fluid dynamics (CFD) numerical simulation, and significantly improves the desulfurization reaction efficiency. Specifically, the technology has the following characteristics: (1) strengthening the mixing effect of hot raw meal and SO2 in flue gas. The position of raw meal feeding and desulfurization is optimized by CFD simulation, which helps to improve the efficiency of raw meal heating and desulfurization system.

（2）延長了脫硫反應時間。通過對傳統水泥窯干法脫硫系統的優化，顯著擴大了脫硫反應區域，延長了脫硫反應時間。使得脫硫反應時間由傳統的1~2 s延長至8~10 s，從而顯著提升了脫硫反應效率。

(2) The desulfurization reaction time was prolonged. By optimizing the traditional dry desulfurization system of cement kiln, the desulfurization reaction area is significantly expanded and the desulfurization reaction time is prolonged. The desulfurization reaction time is extended from 1 ~ 2 s to 8 ~ 10 s, which significantly improves the desulfurization reaction efficiency.

（3）提高了脫硫劑的反應活*。直接從解爐抽取熱生料，其含有未經冷卻的CaO、K2O、Na2O等氧化物，具有反應*性高、顆粒內部孔結構發達、比表面積大等優勢，因此與SO2反應速率更高。

(3) The reaction activity of desulfurizer is improved *. The hot raw meal is directly extracted from the furnace, which contains uncooled oxides such as Cao, K2O and Na2O. It has the advantages of high reactivity, developed pore structure in the particles and large specific surface area. Therefore, the reaction rate with SO2 is higher.

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