The experiments on bio-oil recovery in a vertical tubular condenser with two flumes were conducted for speculating the componential distribution of walnut shell pyrolysis vapors during condensation. Bio-oil elements and functional groups from different locations of condenser were compared with each other. Aromatic H and H in phenolic OH were concentrated in the top and middle bio-oil and their percentage were improved with increasing water bath temperature. Ten representative compounds in bio-oil were chosen for quantitative analysis. As water bath temperature increased from 273 K to 353 K, the recovered water decreased by 85% whereas the guaiacol and its derivatives (guaiacols) merely decreased by 40%. Vapor distributions of water, acetic acid, furfural and guaiacols were simulated by the back analysis of bio-oil components. According to the simulated results, tubular condenser can be properly lengthened for promoting the recovery of specific components at high water bath temperatures.

进行了具有两个水槽的立式管状冷凝器中生物油回收的实验，以推测冷凝过程中核桃壳热解蒸气的成分分布。比较了冷凝器不同位置的生物油元素和官能团。苯酚OH中的芳烃H和H集中在顶部和中间生物油中，并且随着水浴温度的升高，它们的百分比得到提高。选择了生物油中的十种代表性化合物进行定量分析。随着水浴温度从273 K增加到353 K，回收的水减少了85％，而愈创木酚及其衍生物（guaiacols）仅下降了40％。通过对生物油成分的反分析，模拟了水，乙酸，糠醛和愈创木酚的蒸汽分布。