著我國工業(yè)的不斷進(jìn)步,鍋爐燃燒柴油產(chǎn)生的廢氣越來越多,主要含有SO2.NOX.煙塵、林格曼黑度等污染物。如果這些污染物隨意排放到大氣中,將對(duì)當(dāng)?shù)厣鷳B(tài)環(huán)境產(chǎn)生相當(dāng)惡劣的影響。為了保護(hù)我國生態(tài)環(huán)境的完整性,保護(hù)環(huán)境和經(jīng)濟(jì)的可持續(xù)發(fā)展,鍋爐廢氣應(yīng)脫硫。生物脫硫也應(yīng)運(yùn)而生。
With the continuous progress of China's industry, more and more exhaust gases are generated from the combustion of diesel fuel in boilers, mainly including SO2. NOX. soot, Ringmann blackness and other pollutants. If these pollutants are discharged into the atmosphere at will, they will have a very bad impact on the local ecological environment. In order to protect the integrity of China's ecological environment and the sustainable development of the environment and economy, boiler exhaust gas should be desulfurized. Biological desulfurization also came into being.
目前,煙氣脫硫脫硝處理技術(shù)多種多樣,包括PAFP.ACFP.軟錳礦法.電子束氨法.脈沖電暈法.石膏濕法.催化氧化法.微生物降解法等技術(shù),其中濕法煙氣脫硫脫硝快、常見。
At present, flue gas desulfurization and denitration treatment technologies are diverse, including PAFP, ACFP, pyrolusite process, electron beam ammonia process, pulse corona process, gypsum wet process, catalytic oxidation process, microbial degradation process and other technologies, among which wet flue gas desulfurization and denitration are fast and common.
常見的煙氣脫硫方法包括干式脫硫和濕式脫硫。干式脫硫是利用催化劑和吸收劑去除煙氣中的二氧化硫。不同的催化劑和吸附劑也有不同的作用。更廣泛使用的吸收劑類型是氧化物和活性炭。雖然干式脫硫是有效的,但由于不能回收,吸收成本高。濕式脫硫和干式脫硫均采用高效液體吸收劑。石灰石和海水脫硫是濕式脫硫的主要操作方法。因此,我國絕大多數(shù)企業(yè)都使用濕式脫硫進(jìn)行相關(guān)操作。
Common flue gas desulfurization methods include dry desulfurization and wet desulfurization. Dry desulfurization is to remove sulfur dioxide from flue gas by using catalyst and absorbent. Different catalysts and adsorbents also have different effects. The more widely used absorbent types are oxides and activated carbon. Although dry desulfurization is effective, it cannot be recovered and the absorption cost is high. High-efficiency liquid absorbent is used for wet desulfurization and dry desulfurization. Limestone and seawater desulfurization are the main operation methods of wet desulfurization. Therefore, most enterprises in China use wet desulfurization for relevant operations.
濕法煙氣脫硫技術(shù)有很多優(yōu)點(diǎn):濕法煙氣脫硫技術(shù)是氣液反應(yīng),反應(yīng)速度快,脫硫效率高,一般高于90%,技術(shù)成熟,應(yīng)用廣泛。濕法脫硫技術(shù)相對(duì)成熟,生產(chǎn)運(yùn)行安全可靠,在眾多脫硫技術(shù)中始終占據(jù)主導(dǎo)地位。
Wet flue gas desulfurization technology has many advantages: wet flue gas desulfurization technology is gas-liquid reaction, with fast reaction speed and high desulfurization efficiency, generally higher than 90%, mature technology and wide application. Wet desulfurization technology is relatively mature, safe and reliable in production and operation, and has always occupied a leading position in many desulfurization technologies.
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