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旋轉(zhuǎn)噴霧干燥煙氣脫硫是怎么進(jìn)行的

旋轉(zhuǎn)噴霧干燥煙氣脫硫工藝

Rotary spray drying flue gas desulfurization process
噴霧干燥法脫硫工藝以石灰為脫硫吸收劑,石灰經(jīng)消化并加水制成消石灰乳,消石灰乳由泵打入位于吸收塔內(nèi)的霧化裝置,在吸收塔內(nèi),被霧化成細(xì)小液滴的吸收劑與煙氣混合接觸,與煙氣中的SO2發(fā)生化學(xué)反應(yīng)生成CaSO3,煙氣中的SO2被脫除。與此同時(shí),吸收劑帶入的水分迅速被蒸發(fā)而干燥,煙氣溫度隨之降低。
The spray drying desulfurization process uses lime as the desulfurization absorbent. Lime is digested and added with water to make hydrated lime milk. The hydrated lime milk is pumped into the atomization device located in the absorption tower. In the absorption tower, the absorbent atomized into fine droplets is mixed and contacted with the flue gas, which reacts with SO2 in the flue gas to produce CaSO3, and SO2 in the flue gas is removed. At the same time, the moisture brought in by the absorbent is quickly evaporated and dried, and the flue gas temperature decreases accordingly.
脫硫反應(yīng)產(chǎn)物及未被利用的吸收劑以干燥的顆粒物形式隨煙氣帶出吸收塔,進(jìn)入除塵器被收集下來(lái)。脫硫后的煙氣經(jīng)除塵器除塵后排放。為了提高脫硫吸收劑的利用率,一般將部分除塵器收集物加入制漿系統(tǒng)進(jìn)行循環(huán)利用。該工藝有兩種不同的霧化形式可供選擇,一種為旋轉(zhuǎn)噴霧輪霧化,另一種為氣液兩相流。
Desulfurization reaction products and unused absorbent are brought out of the absorption tower with flue gas in the form of dry particles, and then enter the dust collector for collection. The flue gas after desulfurization is discharged after dedusting by dust collector. In order to improve the utilization rate of desulfurization absorbent, part of the dust collector collection is generally added to the pulping system for recycling. There are two different forms of atomization for this process, one is rotary spray wheel atomization, and the other is gas-liquid two-phase flow.
噴霧干燥法脫硫工藝具有技術(shù)成熟、工藝流程較為簡(jiǎn)單、系統(tǒng)可靠性高等特點(diǎn),脫硫率可達(dá)到85%以上。該工藝在美國(guó)及西歐一些國(guó)家有一定應(yīng)用范圍(8%)。脫硫灰渣可用作制磚、筑路,但多為拋棄至灰場(chǎng)或回填廢舊礦坑。
The spray drying desulfurization process has the characteristics of mature technology, relatively simple process flow and high system reliability, and the desulfurization rate can reach more than 85%. The process has a certain application range (8%) in the United States and some Western European countries. Desulfurized ash can be used for making bricks and building roads, but most of them are discarded to the ash yard or backfilled with waste mines.
以上就是為大家介紹的有關(guān)生物脫硫的詳細(xì)的介紹,希望對(duì)您有所幫助.如果您有什么疑問(wèn)的話,歡迎聯(lián)系我們.我們將以的態(tài)度,為您提供服務(wù)http://www.fengkecheng.cn
The above is a detailed introduction about biological desulfurization. I hope it will help you If you have any questions, please contact us We will provide you with professional service http://www.fengkecheng.cn

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