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    氧化鎂濕法脫硫工藝的特點有哪些?

    首頁- 新聞資訊 > 行業資訊 > 2022-05-07

    工藝特點(1)反應性好,脫硫效率高濕法脫硫的反應強度取決于脫硫劑堿金屬離子的溶解堿性。由于鎂離子的溶解堿性比鈣離子高數百倍,因而鎂基脫硫劑具有比鈣基脫硫劑高數十倍的脫硫反應能力。工業實踐證明,鎂基脫硫劑能比鈣基脫硫劑更高的脫硫效率,可達99%以上,同時采用鎂基脫硫所要求的噴淋水量僅相當于達到同樣脫硫效率的鈣基脫硫的1/3,耗電量也大為降低。

    Process features (1) good reactivity and high desulfurization efficiency. The reaction intensity of wet desulfurization depends on the alkaline dissolution of desulfurizer alkali metal ions. Because the dissolution alkalinity of magnesium ions is several hundred times higher than that of calcium ions, magnesium based desulfurizer has desulfurization reaction capacity several ten times higher than that of calcium based desulfurizer. Industrial practice has proved that magnesium based desulfurizer can achieve higher desulfurization efficiency than calcium based desulfurizer, up to more than 99%. At the same time, the spray water required for magnesium based desulfurization is only equivalent to 1 / 3 of calcium based desulfurization with the same desulfurization efficiency, and the power consumption is also greatly reduced.
    (2)運行可靠性高
    (2) High operation reliability
    由于鎂基脫硫生成物的溶解度較高,其固體懸浮物為松散的結晶體,不易沉積,因此沒有鈣基濕法脫硫系統中存在的結垢、結塊、堵塞等現象,運行可靠,維護更容易。
    Due to the high solubility of magnesium based desulfurization products, the solid suspended solids are loose crystals and are not easy to deposit. Therefore, there is no scaling, caking, blocking and other phenomena in the calcium based wet desulfurization system, which has reliable operation and easier maintenance.
    (3)造價低
    (3) Low cost
    由于反應強度高,鎂基噴淋反應吸收塔的高度只有鈣基脫硫的2/3左右,因此,鎂基脫硫的主體設備的造價要明顯低于鈣基吸收塔。同時,由于氧化鎂的分子量(40)是氧化鈣(56)的73%,是碳酸鈣(石灰石,分子量為100)的40%,因此,去除等量的二氧化硫所需的氧化鎂要比鈣基少得多,而且MgO又以粉狀供貨,脫硫劑供給系統也比鈣基脫硫大大簡化,降低了系統的造價。比較表明,氧化鎂脫硫設備的造價一般可比石灰石/石膏法低10~15%左右。
    Due to the high reaction intensity, the height of magnesium based spray reaction absorber is only about 2 / 3 of that of calcium based desulfurization. Therefore, the cost of the main equipment of magnesium based desulfurization is significantly lower than that of calcium based absorber. At the same time, since the molecular weight (40) of magnesium oxide is 73% of calcium oxide (56) and 40% of calcium carbonate (limestone, molecular weight is 100), the amount of magnesium oxide required to remove the same amount of sulfur dioxide is much less than that of calcium base. Moreover, MgO is supplied in powder form, and the desulfurizer supply system is greatly simplified than calcium base desulfurization, which reduces the cost of the system. The comparison shows that the cost of magnesium oxide desulfurization equipment is generally about 10 ~ 15% lower than that of limestone / gypsum method.
    (4)運行費用低
    (4) Low operation cost
    由于鎂基工藝的耗電量比石灰石/石膏法低約一半,加上投資較低,雖然脫硫劑成本較高,但綜合脫硫成本一般比石灰石/石膏法低10~15%左右。
    Because the power consumption of magnesium based process is about half lower than that of limestone / gypsum method, and the investment is low, although the cost of desulfurizer is high, the comprehensive desulfurization cost is generally about 10 ~ 15% lower than that of limestone / gypsum method.
    (5)副產品回收的經濟效益高
    (5) High economic recovery of by-products
    鎂基工藝的直接副產物是亞硫酸鎂,經氧化后形成硫酸鎂。脫硫工藝實際產出的是含少量硫酸鎂的亞硫酸鎂副產物。只有經強制氧化產生主要成分為硫酸鎂的副產物。兩種脫硫副產物都具有市場利用價值,其處理和利用形式應該"因地制宜",取決于技術經濟的比較和在特定項目中的可行性
    The direct by-product of magnesium based process is magnesium sulfite, which is oxidized to form magnesium sulfate. The actual output of desulfurization process is magnesium sulfite by-product containing a small amount of magnesium sulfate. Only by-products whose main component is magnesium sulfate can be produced by forced oxidation. Both desulfurization by-products have market utilization value, and their treatment and utilization forms should be "adjusted to local conditions", which depends on the comparison of technology and economy and the feasibility in specific projects
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    The above is about biogas purification http://www.rfidjournal.cn I hope it will be helpful to you If you have any questions, please contact us We will provide you with professional service

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