Yang Bin, Chen Ming
School of Mechanical Engineering, Shanghai Jiao Tong University, No. 800, Dongchuan Rd., Shanghai 200240, China.
Polymers (Basel). 2020 Nov 18;12(11):2734. doi: 10.3390/polym12112734.
Automobile shredder residue (ASR) pyrolysis produces solid, liquid, and gaseous products, particularly pyrolysis oil and gas, which could be used as renewable alternative energy resources. Due to the primary pyrolysis reaction not being complete, the yield of gaseous product is low. The pyrolysis tar comprises chemically unstable volatiles before condensing into liquid. Understanding the characteristics of volatile products will aid the design and improvement of subsequent processes. In order to accurately analyze the chemical characteristics and yields of volatile products of ASR primary pyrolysis, TG-FTIR-GC/MS analysis technology was used. According to the analysis results of the Gram-Schmidt profiles, the 3D stack plots, and GC/MS chromatograms of MixASR, ASR, and its main components, the major pyrolytic products of ASR included alkanes, olefins, and alcohols, and both had dense and indistinguishable weak peaks in the wavenumber range of 1900-1400 cm. Many of these products have unstable or weaker chemical bonds, such as =CH-, =CH2, -C=C-, and -C=CH2. Hence, more syngas with higher heating values can be obtained with further catalytic pyrolysis gasification, steam gasification, or higher temperature pyrolysis.
汽车 shredder 残渣（ASR）热解产生固体、液体和气体产物，特别是热解油和气，它们可用作可再生替代能源。由于一次热解反应不完全，气体产物的产率较低。热解焦油在冷凝成液体之前包含化学性质不稳定的挥发物。了解挥发性产物的特性将有助于后续工艺的设计和改进。为了准确分析 ASR 一次热解挥发性产物的化学特性和产率，采用了 TG-FTIR-GC/MS 分析技术。根据 MixASR、ASR 及其主要成分的 Gram-Schmidt 曲线、三维堆叠图和 GC/MS 色谱图的分析结果，ASR 的主要热解产物包括烷烃、烯烃和醇类，并且在 1900 - 1400 cm 的波数范围内两者都有密集且难以区分的弱峰。这些产物中的许多具有不稳定或较弱的化学键，如 =CH-、=CH2、-C=C- 和 -C=CH2。因此，通过进一步的催化热解气化、蒸汽气化或更高温度的热解可以获得更多具有更高热值的合成气。
