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玉米秸稈等離子體熱裂解液化實
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on Plasma Pyrolysis of Corn Stalk for Liquid Fuel
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    摘要:

    采用山東理工大學(xué)自制小型流化床設(shè)備，利用玉米秸稈為原料進(jìn)行了熱裂解過程及生物油特性的實驗研究,。結(jié)果表明采用等離子體加熱,，整個反應(yīng)器的預(yù)熱時間大約為1.5h，且反應(yīng)過程中流化床內(nèi)溫度穩(wěn)定,，有利于生物質(zhì)快速熱裂解反應(yīng)的進(jìn)行。對反應(yīng)產(chǎn)物——生物油熱值特性作了分析，得出未經(jīng)任何處理的生物原油的熱值為18066.62kJ/kg,，脫炭后熱值低于脫炭前的生物油熱值，其差值為3446.71kJ/kg,，說明生物油中含有一定的固體炭,。將脫炭后的生物油進(jìn)行脫水處理后，測得生物油熱值高出脫碳后生物油熱值一倍左右,。另外,，玉米秸稈進(jìn)行稀硝酸處理后，雖然玉米秸稈的熱值降低,，但裂解后生物油的熱值有所提高,，其熱值差為913.74kJ/kg。采用GC—MS分析得知,，生物油是一種復(fù)雜的含氧有機(jī)化合物和水組成的混合物,，也是導(dǎo)致其不穩(wěn)定的主要原因。

    Abstract:

    This experimental study on plasma pyrolysis of corn stalk and the feature of bio-oil was carried out in a self manufactured small fluidized bed reactor with corn stalk. Results showed that the temperature in the fluidized bed was steady under the condition of adopting the plasma body to heat the reactor, and the preheat time is 1.5h. The heating value of pyrolysis liquid—bio-oil was analyzed. The heating value of crude bio-oil obtained is 18066.62kJ/kg. Heating value after taking off carbons is lower by 3446.71kJ/kg than that of before taking off carbons. Thus, there is some certain solid charcoal in the bio-oil. The bio-oil after taking off the carbon was get rid of the water, which heating value is one time higher than that of the bio-oil after only taking off the carbon, with the difference of 14345.95kJ/kg.

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張春梅,劉榮厚,易維明,孫清.玉米秸稈等離子體熱裂解液化實[J].農(nóng)業(yè)機(jī)械學(xué)報,2009,40(8):96-99. on Plasma Pyrolysis of Corn Stalk for Liquid Fuel[J]. Transactions of the Chinese Society for Agricultural Machinery,2009,40(8):96-99.

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