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    顆粒機設備新聞

    木質顆粒與碳化顆粒:哪個更環保?

    發布日期:2016-5-17 13:34:52  瀏覽量:

    木質顆粒被廣泛認為是時下最環保的燃料之一。這意味著其可以減少能源生產行業的溫室氣體排放量。更重要的是,從完全可再生途徑獲取的木材廢物能使百萬噸生物質得以留存。

    Wood pellets are widely recognized as one of the most eco-friendly types of fuel nowadays. It means that their quality could reduce the greenhouse gas emissions of the energy production industry. What is more, getting wood residues from completely renewable sources leads to the preservation of millions tons of biomass.


    然而,碳化顆粒被認為是燃料市場的一個新的未來。因此,碳化生物質是相對統一的產品,可以在發電廠進行焚燒,運作很像煤。這也有助于降低溫室氣體排放和空氣污染。

    However, torrefied wood pellets are considered as a new future of the fuel market. Thus, torrefied biomass is a relatively consistent and uniform product that could be burned at power plants, functioning much like coal. Herewith, it also helps to lower greenhouse gas emissions and much lower air pollution. 


    木質顆粒的不足

    Wood Pellet disadvantages

    然而,木質顆粒也有一些不足。在購買和安裝鍋爐中花費的初始成本。更重要的是,需要花時間在定期清理鍋爐和清空灰箱上。木質生物質比其他類型的燃料體積大得多,所以需要大量的空間(料斗或木材商店)來存儲木質顆粒。

    However, there are some disadvantages of wood pellets. Thus, the initial costs should be spent on buying and installing the boiler. What is more, it is needed to be spent some time on cleaning boilers and empting ash bins on regular basis. Wood biomass is much bulkier than other types of fuel, so it is needed a lot of space (hopper or wood store) to store wood pellets dry.

    而最重要的,如果你想真正環保,你應該了解你所在地區木質顆?捎眯,在運輸過程中隨著顆粒運輸距離越大,排放的碳越多。

    And the most important, if you want to be really eco-friendly, you should check out availability of wood pellet in your region, as the further pellets are transported the greater amount of carbon is released while transporting.


    碳化木質顆粒的優勢

    Advantages of torrefied wood pellets

    碳化木質顆粒被廣泛用于發電廠,由于其運作很像煤炭,能量密度很高。應當注意的是,工業木質顆粒比碳化木質顆粒燃燒效率低。碳化木質顆?梢员A90%原始生物質能。這樣一來,使用碳化顆粒的話,燃煤電廠可以接近最大容量運作。

    Torrefied wood pellets are widely used by power plants due to its functioning much like coal and high level of energy density.It should be noted that industrial wood pellets are burned less efficiently than torrefied wood pellets. Thus, torrefied wood pellets could retain up to 90% of the original biomass energy. As a result, coal plants on torrefied wood granules could operate at closer to their maximum capacity.

     

    與普通木質顆粒比較,更高一級的體積和能量密度使碳化木質顆粒運輸更經濟。此外,碳化生物質的疏水能力使其不太可能分解,使顆粒更容易存儲。

    A higher level of bulk and energy density allows pelletized torrefied wood be much more economical to ship and transport in comparison with regular wood pellets. In addition, the hydrophobic ability of torrefied biomass makes it less likely to degrade than regular wood granules, making pellets easier to store.

     

    碳化生物質的熱值比木質顆粒熱值的水平高出1.5倍。碳化木質顆粒的水分含量為1%左右,而木質顆粒的水分含量可以達到10%左右。因此,碳化木質顆?梢詼p少化石燃料的使用,并使燃煤發電廠降低溫室氣體排放,改善空氣質量。

    The caloric value of torrefied biomass is 1.5 times higher than the level of caloric value of wood pellets. The moisture content of the torrefied wood pellets is around 1%, while the moisture content of wood pellets could reach 10 and more percent. So, torrefied wood pellets reduce the use of fossil fuel and allow coal power plants to lower GHG emissions, improving air quality.


    碳化木質顆粒:缺點

    Torrefied wood pellets: drawbacks

    烏克蘭生物燃料門戶pellets.wood.com的分析師介紹了一些碳化生物質的缺點。首先,與普通的木質顆粒相比,碳化木質顆粒更難得到,因為碳化木質顆粒行業尚未被廣泛開發。其他缺點是與碳化顆粒制作過程聯系相關。因此,二氧化碳的排放量與過程中的溫度和時間相關。每種類型的木材有其理想的燃燒溫度,在較高或較低的溫度下燃燒木材可能會增加排放,使能量產率降低。碳化過程有很多不確定性因素。

    The analysts of Ukrainian Biofuel Portal pellets.wood.com described some disadvantages of the torrefied biomass. For the first, torrefied wood pellets are more difficult to find in comparison with regular wood pellets, as torrefied wood pellet industry has not been so widely developed yet. Other drawbacks are linked with the process of making torrefied pellets. Thus, CO2 emissions are connected with temperature and time the process takes. Each type of wood has its ideal burning temperature and burning wood at a higher or lower temperature could increase emissions and make a lower energy yield. And still, so many uncertainties about the torrefaction are needed to be explained.


    總結

    綜上所述,木質顆粒和碳化木質顆粒都可以用于供熱和發電。木質顆粒以及碳化木質顆粒是碳中性的,被公認為能夠改善空氣質量,減少溫室氣體排放的可再生燃料。但哪個是更環保的燃料?

    So, according to the above information, both wood pellets and torrefied wood pellets are used for heating and generating electricity. Wood pellets as well as torrefied wood pellets are carbon neutral and recognized as a renewable fuel that improves air quality, reducing greenhouse gas emissions. But which one is a greener type of fuel?


    據我們所知,碳化木質顆粒比普通木質顆粒熱量更高。它的防水性能,使其比木質顆粒燃料更易于儲存。碳化生物質可與煤共燒,使燃煤電廠符合可再生能源標準。同時,具有較高的能量含量意味著需要更少的顆粒的出貨量,能夠減少運送顆粒燃料給客戶時的二氧化碳的排放量。碳化生物質最大的好處是,它可以碳化林業副產品和家具廠鋸木。否則,他們進入垃圾填埋場,釋放甲烷,比排放二氧化碳對環境的負面影響更大。

    As far as we now, torrefied wood pellets have a much higher heat content than regular wood pellets. Its water-repellent property has a great positive influence on moisture problems that appears while storing fuel in comparison with wood pellets. Torrefied biomass could be co-fired along with coal, allowing coal-fired power plants comply with renewable energy standards. To have a higher energy content means that it will be needed less pellet shipments, what much reduces CO2 emissions while transporting pellet fuel to customers. And the most important benefit of the torrefied biomass is that it could be used industrial bi-product from forestry sawmills or furniture manufacturers for torrefaction. Otherwise, they go into landfill and release methane, which has much higher negative environmental impact than CO2 emissions.


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