水泥窯熱生料**脫硫技術(shù) 針對傳統(tǒng)的水泥窯干法脫硫技術(shù)存在的問題，開發(fā)了一種水泥窯熱生料**脫硫技術(shù)。該技術(shù)在傳統(tǒng)采用爐熱生料干法脫硫的基礎(chǔ)上，通過基于計算流體動力學(xué)（CFD）數(shù)值模擬等手段，優(yōu)化了水泥窯干法脫硫系統(tǒng)，顯著提升了脫硫反應(yīng)效率。具體來講，該技術(shù)具有如下特點(diǎn)：（1）強(qiáng)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(tǒng)優(yōu)化布置、熱生料喂入位置等進(jìn)行CFD模擬優(yōu)化，促*了熱生料與煙氣中SO2的混合，有助于提高脫硫反應(yīng)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(yīng)時間。通過對傳統(tǒng)水泥窯干法脫硫系統(tǒng)的優(yōu)化，顯著擴(kuò)大了脫硫反應(yīng)區(qū)域，延長了脫硫反應(yīng)時間。使得脫硫反應(yīng)時間由傳統(tǒng)的1~2 s延長至8~10 s，從而顯著提升了脫硫反應(yīng)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(yīng)活*。直接從解爐抽取熱生料，其含有未經(jīng)冷卻的CaO、K2O、Na2O等氧化物，具有反應(yīng)*性高、顆粒內(nèi)部孔結(jié)構(gòu)發(fā)達(dá)、比表面積大等優(yōu)勢，因此與SO2反應(yīng)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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2022-05-06
