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生物质热解液化装置研制与试验研究 总被引:9,自引:0,他引:9
介绍了一种电热式快速流化床生物质热解液化装置的研制,该装置的技术关键是采用两级螺旋进料和大流量喷雾直接冷凝收集生物油。试验结果表明,该装置完全可以用于各种固体生物质的热解液化,而且无论何种生物质都存在最佳热解温度。木屑、稻壳、玉米秆和棉花秆4种原料在最佳热解条件下的生物油质量产率分别为63%,53%,57%和56%,热值均为17~18MJ/kg。通过试验研究还发现,生物油是一种复杂的含氧有机化合物和水组成的混合物,包含了几乎所有化学类别的有机物;减少原料携带的外在水可有效降低生物油中的水分;储藏时间达半年的生物油仍然可以直接燃烧。 相似文献
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生物质热解与生物油的特性研究 总被引:25,自引:0,他引:25
用木屑、稻壳、玉米秆和棉花秆为原料进行了热解液化试验,生物油的产率分别为63%、53%、57%和56%,生物油的热值均为17~18MJ/kg。生物油成分分析表明,生物油是一种复杂含氧有机化合物与水组成的混合物,包括了几乎所有化学类别的有机物,如醚、酯、醛、酮、酚、醇和有机酸等。生物油粘温特性研究表明,当温度低于85℃时,生物油粘度随着温度升高而减小,符合液体粘温通用关系式;当温度高于85℃时,生物油粘度随着温度升高而上升,生物油中某些化合物开始产生聚合反应。 相似文献
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A sensitive and specific liquid chromatography-tandem mass spectrometry method was developed and validated to quantify troxerutin in human plasma using rutin as the internal standard. After a simple protein precipitation with perchloric acid, the post-treatment samples were analyzed on a Phenomenex Synergi Fusion RP column interfaced with a tripe-quadrupole tandem mass spectrometer using positive electrospray ionization. The assay was linear over the concentration range 31.25-4 000 pg/mL using a 20 μL aliquot of plasma. The correlation coefficients for the calibration curves ranged from 0.999 5 to 0.999 6. The intra-and inter-day precisions over the entire concentration were not more than 13.5%. Acetonitrile and water (20∶80, v/v) is used as the isocratic mobile phase, with 0.1% of formic acid in water. The method was successfully applied for pharmacokinetic study after a single oral administration of 300 mg troxerutin to 18 healthy volunteers. 相似文献
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介绍了数字雕刻技术在骨架式轴唇圈模具加工中定位凸台、标记符号、数字、以及流体动力型轴唇圈的模具左旋、右旋回油线、具有双向回流作用的“∧”“△”等形式回油线的加工方法,雕刻的回油线具有定位准确。深浅均匀,不会产生错线、不全、重叠等现象,是以往滚压法所不能比拟的,极大地提高了骨架式轴唇圈的质量。 相似文献
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Orally administered racedotril is rapidly hydrolysed to the more potent enkephalinase inhibitor thiorphan in vivo. A sensitive and specific liquid chromatography-tandem mass spectrometry method was developed and validated to quantify thiorphan in human plasma using lisinopril as the internal standard. After a simple protein precipitation with methanol, the post-treatment samples were analyzed on a CN column interfaced with a tripe-quadrupole tandem mass spectrometer using negative electrospray ionization. The method was validated to demonstrate the specificity, lower limit of quantification, accuracy, and precision of measurements. The assay was linear over the concentration range 9.38~600 ng/mL using a 5 μL aliquot of plasma. The correlation coefficients for the calibration curves ranged from 0.998 5 to 0.999 5. The intra-and inter-day precisions over the entire concentration were not more than 6.33%. Methanol and water (35∶65, v/v)is used as the isocratic mobile phase, with 0.1% of formic acid in water. The method was successfully applied for pharmacokinetic study after a single oral administration of 200 mg racecadotril to 20 healthy volunteers. 相似文献
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