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温度对烟杆热解炭、气、油联产特性的影响

, PP. 54-59

Keywords: 烟杆,热解,多联产,产物特性

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Abstract:

烟杆热解多联产是烟杆高值化利用的重要选择之一。文中主要研究了烟杆热解转化过程中气液固产物的形成析出机制以及联产机制。研究发现随着热解温度的升高,气体产率直线增加,固体焦逐渐减少,液体油产率则在20%左右变化不大。在低温下,热解气主要为CO2和CO,随着温度的升高,CO、H2和CH4的量逐渐增大,且在700℃时CO高达35.65%,热解气热值也升高到12.53MJ/m3,是较理想的气体燃料。液体油的组成较为复杂,其中吡啶类、酯类和一些酸类大分子有机物含量在低温下较高,而在高温下由于二次反应而使其含量降低,苯酚类和芳环类有机物均在高温下含量较高。随着温度的上升,焦炭中的有机官能团逐渐减少,在600℃后,烟杆基本热解完全。

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