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石膏法煙氣脫硫的原理介紹!

鍋爐/窯爐—>除塵器—>引風(fēng)機(jī)—>吸收塔—>煙囪來(lái)自于鍋爐或窯爐的煙氣經(jīng)過(guò)除塵后在引風(fēng)機(jī)作用下進(jìn)入吸收塔,吸收塔為逆流噴淋空塔結(jié)構(gòu),集吸收、氧化功能于一體,上部為吸收區(qū),下部為氧化區(qū),經(jīng)過(guò)除塵后的煙氣與吸收塔內(nèi)的循環(huán)漿液逆向接觸。
Boiler/Kiln ->Dust Remover ->Induced Draft Fan ->Absorption Tower ->Chimney The flue gas from the boiler or kiln enters the absorption tower under the action of the induced draft fan after being removed from the dust. The absorption tower is a countercurrent spray empty tower structure that integrates absorption and oxidation functions. The upper part is an absorption zone, and the lower part is an oxidation zone. The flue gas after dust removal is in reverse contact with the circulating slurry in the absorption tower.
系統(tǒng)一般裝3-5臺(tái)漿液循環(huán)泵,每臺(tái)循環(huán)泵對(duì)應(yīng)一層霧化噴淋層。當(dāng)只有一臺(tái)機(jī)組運(yùn)行時(shí)或負(fù)荷較小時(shí),可以停運(yùn)1-2層噴淋層,此時(shí)系統(tǒng)仍保持較高的液氣比,從而可達(dá)到所需的脫硫效果。吸收區(qū)上部裝二級(jí)除霧器,除霧器出口煙氣中的游離水份不超過(guò)75mg/Nm3
The system is generally equipped with 3-5 slurry circulating pumps, each of which corresponds to a layer of atomization spray layer. When only one unit is operating or the load is low, 1-2 layers of spray layers can be shut down, while the system still maintains a high liquid gas ratio to achieve the desired desulfurization effect. A two-stage mist eliminator is installed at the upper part of the absorption zone, and the free water content in the flue gas at the outlet of the mist eliminator does not exceed 75mg/Nm3\
生物脫硫
吸收SO2后的漿液進(jìn)入循環(huán)氧化區(qū),在循環(huán)氧化區(qū)中,亞硫酸鈣被鼓入的空氣氧化成石膏晶體。同時(shí),由吸收劑制備系統(tǒng)向吸收氧化系統(tǒng)供給新鮮的石灰石漿液,用于補(bǔ)充被消耗掉的石灰石,使吸收漿液保持一定的pH值。反應(yīng)生成物漿液達(dá)到一定密度時(shí)排脫硫副產(chǎn)品系統(tǒng),經(jīng)過(guò)脫水形成石膏。
The slurry after absorbing SO2 enters the circulating oxidation zone, where calcium sulfite is oxidized into gypsum crystals by the blown air. At the same time, the absorbent preparation system supplies fresh limestone slurry to the absorption oxidation system to supplement consumed limestone and maintain a certain pH value of the absorption slurry. When the reaction product slurry reaches a certain density, it is discharged to the desulfurization by-product system and dehydrated to form gypsum.
5.工藝特點(diǎn)
5. Process characteristics
1、脫硫效率高,可保證95%以上;
1. High desulfurization efficiency, ensuring over 95%;
2、應(yīng)用為廣泛、技術(shù)成熟、運(yùn)行可靠性好;
2. The most widely used, mature technology, and good operational reliability;
3、對(duì)煤種變化、負(fù)荷變化的適應(yīng)性強(qiáng),適用于高硫煤;
3. Strong adaptability to coal type and load changes, suitable for high sulfur coal;
4、脫硫劑資源豐富,便宜;
4. Rich in desulfurizer resources and cheap in price;
5、可起到進(jìn)一步除塵的作用。
5. It can further remove dust.
感謝您的閱讀,此文的文章來(lái)源:生物脫硫更多的內(nèi)容和問(wèn)題請(qǐng)點(diǎn)擊:http://www.mimi5.cn我們會(huì)繼續(xù)努力的為您提供服務(wù),感謝您的支持!
Thank you for reading. The source of this article is: Biological desulfurization. For more information and questions, please click: http://www.mimi5.cn We will continue to work hard to provide you with services, thank you for your support!

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