CAJ | 학술논문

根据生物质连续热解挥发物中焦油、木醋液和可燃气的冷凝特性，设计生物质处理量为3 kg·h-1挥发物的两级冷凝器，其中第一级冷凝器用于分离焦油，第二级冷凝器用于分离木醋液。为解决热解挥发物携带的炭粉颗粒在一级冷凝器中与焦油混合，导致一级冷凝器堵塞的问题，提出一种热解挥发物先进入大管径冷凝管再进入小管径冷凝管的冷凝方案，计算该冷凝器传热系数及换热面积，确定结构尺寸，并进行试验研究。结果表明，该设计方案可有效解决热解挥发物易堵塞问题，同时具有较好的木醋液和焦油分离效率，采用分级冷凝工艺收集的焦油和木醋液在静置2个月后无分层现象，焦油含水率由直接冷凝的26%降低到1.5%。
근거생물질련속열해휘발물중초유、목작액화가연기적냉응특성，설계생물질처리량위3 kg·h-1휘발물적량급냉응기，기중제일급냉응기용우분리초유，제이급냉응기용우분리목작액。위해결열해휘발물휴대적탄분과립재일급냉응기중여초유혼합，도치일급냉응기도새적문제，제출일충열해휘발물선진입대관경냉응관재진입소관경냉응관적냉응방안，계산해냉응기전열계수급환열면적，학정결구척촌，병진행시험연구。결과표명，해설계방안가유효해결열해휘발물역도새문제，동시구유교호적목작액화초유분리효솔，채용분급냉응공예수집적초유화목작액재정치2개월후무분층현상，초유함수솔유직접냉응적26%강저도1.5%。
According to the condensing features of tar, wood vinegar and combustible gas by biomass continuous pyrolysis, the two-stage condenser with biomass processing capacity of 3 kg/h was designed. In this apparatus, the first-stage condenser was used for separating tar and the second-stage condenser was used for separating wood vinegar. In order to solve the problem that carbon powder particles from pyrolysis volatiles mixing with the tar in the first-stage condenser lead to block the first-stage condenser a project-pyrolysis volatiles entering into the big diameter condenser pipe first and then entering into the small diameter condenser pipe was proposed. The condenser heat transfer coefficient and heat transfer area were calculated to determine the structure size. The results showed that this kind of design scheme could effectively solve the problem which condenser was easy blocked, meanwhile, it could separate wood vinegar and tar efficiently, after two months standing the tar and wood vinegar collected by fractional condensation system were still not appear layering. Contrast direct condensation the moisture content of tar was decreased from 26%to 1.5%.