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    • 1. 发明申请
    • BIOMASS TO BIOCHAR CONVERSION IN SUBCRITICAL WATER
    • 生物质在亚临界水中的生物转化
    • US20110179703A1
    • 2011-07-28
    • US12875549
    • 2010-09-03
    • Ram B. GUPTASandeep KUMARLingzhao KONG
    • Ram B. GUPTASandeep KUMARLingzhao KONG
    • C10L5/00C10B1/00
    • C10G1/02C10G2300/1011C10L9/086Y02E50/30Y02P30/20
    • The present invention relates to a method for conversion of biomass to biochar in subcritical water at 230-350° C. and 500-3000 psi. Under subcritical water conditions, biomass readily converts into biochar, biocrude, and some gases. In this invention, yield of biochar is significantly improved by recycling of biocrude. The process can produce hydrophobic biochar that has at least 70 wt % (dry basis) carbon as opposed to ˜25 wt % carbon in hydrophilic biomass, and has a heating value of about 29 MJ/kg (HHV-dry basis) which is comparable to good quality coals. More than 90% energy of biomass is retained in the biochar. The invention provides an effective means to convert biomass into a high energy density fuel for use in a variety of applications.
    • 本发明涉及在230-350℃和500-3000psi的亚临界水中将生物质转化为生物炭的方法。 在亚临界水条件下,生物质很容易转化为生物炭,生物质和一些气体。 在本发明中,生物炭的产率通过生物粗制品的回收显着提高。 该方法可以生产具有至少70重量%(干基)碳的疏水性生物炭,而亲水生物质中的碳含量为〜25重量%,并且具有约29MJ / kg(HHV-干基)的热值,这相当于 到优质煤。 生物炭中保留了90%以上的生物质能。 本发明提供了将生物质转化成用于各种应用的高能量密度燃料的有效手段。