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    發電機組沼氣預處理要注意什么?

    首頁- 新聞資訊 > 行業資訊 > 2022-01-14

    一、沼氣成分對發動機運行的影響
    1、 Influence of biogas composition on engine operation
    在利用沼氣發電過程中,由于沼氣發電機組本身設計和材料的特點,導致發電機組對沼氣中的部分成分(如H2S、水分、固體雜質等)特別敏感,如果處理不好將導致發電機組無法正常運行。
    In the process of using biogas for power generation, due to the design and material characteristics of biogas generator set, the generator set is particularly sensitive to some components in biogas (such as H2S, moisture, solid impurities, etc.), and if it is not handled properly, the generator set will not operate normally.
    硫化氫對發電機組的影響
    Influence of hydrogen sulfide on generator set
    硫化氫(H2S)是一種無色有毒的可燃性氣體,具有強烈的臭雞蛋氣味,當空氣中硫化氫的體積含量超過0.1%時,就能引起頭疼暈眩等中毒癥狀。硫化氫(H2S)對鐵等金屬有強腐蝕性,也易吸附金屬表面與多種金屬離子作用,生成不溶于水的硫化物沉淀。沼氣在燃燒時,其中的H2S還能轉化為腐蝕性很強的亞硫酸氣霧會污染環境和腐蝕機器設備,同時H2S在潮濕的環境下對金屬管道、燃燒設備、檢測設備和儀表等都具有強烈的腐蝕性,所以沼氣在利用前必須脫出其中所含的H2S。利用沼氣發電時沼氣中的硫化氫會對沼氣發電機組的進氣管道、增壓器、中冷器、火花塞、氣缸套、排氣管和消音器等造成嚴重腐蝕影響機組壽命。所以沼氣在進入發電機組之前必須進行沼氣預處理,將H2S降到機組允許的范圍內才能保證機組的可靠運行。
    Hydrogen sulfide (H2S) is a colorless, toxic and combustible gas with a strong smell of rotten eggs. When the volume content of hydrogen sulfide in the air exceeds 0.1%, it can cause poisoning symptoms such as headache and dizziness. Hydrogen sulfide (H2S) is highly corrosive to iron and other metals, and it is also easy to adsorb metal surface and interact with a variety of metal ions to form sulfide precipitation insoluble in water. During the combustion of biogas, H2S can also be transformed into highly corrosive sulfite mist, which will pollute the environment and corrode machinery and equipment. At the same time, H2S has strong corrosivity to metal pipes, combustion equipment, detection equipment and instruments in a humid environment. Therefore, the H2S contained in biogas must be removed before use. When using biogas for power generation, the hydrogen sulfide in biogas will cause serious corrosion to the inlet pipe, supercharger, intercooler, spark plug, cylinder liner, exhaust pipe and silencer of biogas generator unit, affecting the service life of the unit. Therefore, before entering the generator unit, biogas must be pretreated to reduce H2S to the allowable range of the unit in order to ensure the reliable operation of the unit.
    沼氣脫硫
    水分對發電機組的影響
    Influence of moisture on generator set
    在利用沼氣發電過程中,沼氣水分含量過大的話,會導致發電機組的進氣壓力損耗過大,嚴重的情況下,會引起發動機功率波動、敲缸、停機等嚴重地影響其使用壽命。其具體表現為:
    In the process of using biogas for power generation, if the moisture content of biogas is too large, it will lead to excessive intake pressure loss of the generator set. In serious cases, it will cause engine power fluctuation, cylinder knocking, shutdown, etc., which will seriously affect its service life. Its specific performance is as follows:
    發動機點火困難;
    Difficult ignition of engine;
    降低燃燒室溫度,降低內燃機的效率;
    Reduce the temperature of combustion chamber and reduce the efficiency of internal combustion engine;
    由于水蒸氣等無功氣體的存在,增壓耗功增大;
    Due to the existence of reactive gas such as steam, the power consumption of pressurization increases;
    水蒸氣與其他酸性物質的化合產生中間產物,對機器本身產生腐蝕,縮短機器的使用壽命,降低機器的可靠性。
    The combination of water vapor and other acidic substances produces intermediate products, which corrodes the machine itself, shortens the service life of the machine and reduces the reliability of the machine.
    固體雜質對發電機組的影響
    Influence of solid impurities on generator set
    粉塵是大氣環境中涉及面最廣、危害最嚴重的一種污染物。粉塵是發動機明確限制的雜質,它主要影響在于:
    Dust is one of the most extensive and harmful pollutants in the atmospheric environment. Dust is an impurity clearly limited by the engine, and its main effects are:
    堵塞管路,流通不暢,加大壓損,增加運行費用;
    The pipeline is blocked, the circulation is not smooth, the pressure loss is increased, and the operation cost is increased;
    增大機械磨損,降低設備使用壽命。
    Increase mechanical wear and reduce equipment service life.

    相關產品 我們的存在,是為了更好的服務于沼氣等可燃氣體凈化及利用行業
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