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移動式生物質(zhì)快速熱裂解裝置設(shè)計與性能研究
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北京市科技計劃項目(Z161100001316004)


Design and Performance Study of Biomass Mobile Fast Pyrolysis Equipment
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    摘要:

    設(shè)計了一套移動式套管流化床生物質(zhì)快速熱裂解反應(yīng)裝置。闡述了套管流化床反應(yīng)器,、流化床氣力輸送進(jìn)料裝置,、噴射噴淋組合式冷凝器等主要組成部件的結(jié)構(gòu),并對各部件的性能進(jìn)行試驗測試,。試驗結(jié)果表明,,流化床氣力輸送進(jìn)料裝置受噴動氣速的影響較大,在流化氣速為0.02m/s時,,隨著噴動氣速的增加,,進(jìn)料率快速增加,當(dāng)噴動氣速超過8m/s時,,這一趨勢趨緩并且進(jìn)料率波動范圍變大,;利用燃燒液化石油氣和不可冷凝氣方式加熱套管流化床,流化床反應(yīng)器內(nèi)部溫度場穩(wěn)定,,滿足生物質(zhì)熱裂解的需要;噴射噴淋組合式冷凝器適用于熱裂解氣體產(chǎn)物的冷卻,,為提高熱解油凈產(chǎn)量,,在給定的溫度下,需要較大的噴淋流量和噴射流量,。在反應(yīng)溫度為500℃時,,落葉松木屑的熱解油產(chǎn)率最高可達(dá)68.6%。

    Abstract:

    A new type of mobile fast pyrolysis equipment with annular tube fluidized bed reactor was designed and built throughput capacity of over 50kg/h. The structure of main components such as the annular tube fluidized bed reactor, fluidized pneumatic conveying feeder, jetspray combined condenser and so on was described in detail, and the experiments were carried out to test the performance of each part of the mobile fast pyrolysis equipment. The results showed that the feeding rate was greatly influenced by the injection gas velocity, and was less affected by the fluidized gas velocity. When the fluidized gas velocity was 0.02m/s, as the injection gas velocity was increased, the feeding rate was increased, whereas the injection gas velocity exceeded 8m/s, the trend was slowed and the feeding rate fluctuation range became larger. The annular tube fluidized bed reactor was heated by means of burning liquefied petroleum gas and noncondensable gas, and the internal temperature field of the fluidized bed reactor was stable, which met the needs of biomass thermal cracking. Jetspray combined condenser was suitable for the cooling of the pyrolysis volatiles. In order to increase the yield of biooil, a larger spray flow rate and jet flow rate were required at a given temperature. At reaction temperature of 500℃, the highest biooil yield of larch sawdust could reach 68.6%. The research can provide a referenced basis for the mobile biomass pyrolysis liquefaction demonstration plant.

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王娜娜,李萍,司慧.移動式生物質(zhì)快速熱裂解裝置設(shè)計與性能研究[J].農(nóng)業(yè)機(jī)械學(xué)報,2019,50(3):288-293. WANG Na’na, LI Ping, SI Hui. Design and Performance Study of Biomass Mobile Fast Pyrolysis Equipment[J]. Transactions of the Chinese Society for Agricultural Machinery,2019,50(3):288-293.

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  • 收稿日期:2018-09-29
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  • 在線發(fā)布日期: 2019-03-10
  • 出版日期: 2019-03-10
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