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Thermo-Catalytic Reforming of Co-form® Rejects (Waste Cleansing Wipes)
Journal of Analytical and Applied Pyrolysis ( IF 5.8 ) Pub Date : 2018-03-22
Miloud Ouadi, Charles Greenhalf, Nils Jaeger, Lais Galileu Speranza, Andreas Hornung

Co-form® products are typically used for personal hygiene care (cleansing wipes), household cleaning (pads and mops) and absorbent applications. Co-form® is a thermo-bonded multilayer nonwoven composite and Kimberly-Clark patented its process in 2008. Co-form® rejects are composed of 30% plastic polypropylene and 70% wood pulp fibre. It is difficult to recycle and to-date no research articles explore pyrolytic valorisation for its energy recovery. This paper investigated pyrolytic valorisation of co-form® rejects into energy vectors. Pelletised co-form® rejects obtained from a secondary fibre paper mill were processed using a laboratory scale 2 kg/h Thermo-Catalytic Reforming (TCR®) reactor. The TCR® process combines intermediate pyrolysis, using an auger reactor to heat the material under moderate temperatures (350–450 °C) and moderate solid residence times (minutes) in the complete absence of Oxygen, with post catalytic reforming in a fixed bed reactor at 700 °C. Pelletised co-form® rejects were successfully converted into 12 wt% bio-oil, 9 wt% aqueous phase liquid, 8 wt% char and 71 wt% syngas products. The bio-oil higher heating value was found to be 39.36 MJ/kg, comparable to biodiesel. Naphthalene was found to be the most abundant aromatic compound within the oil, with a relative abundance of 15.22% measured by GC-MS. Oleic acid methyl ester (15.86%) was the most abundant long chain hydrocarbon detected. The higher heating value of produced gas was 11.02 MJ.Nm3 and char 30.79 MJ/kg. TCR® conversion of co-form® rejects proved to be a feasible route for the valorisation of this waste stream into sustainable energy vectors. In previous works, gasification processes could not successfully convert organic waste streams with a high plastic content, without implications attributed to agglomeration and melting of plastics. The TCR® process overcome these issues with no evidence of agglomeration or melting of plastics present within the reactor. The success was believed to be through applying moderate heating rates (°C/min) and temperatures (max 700 °C), as well as the mechanical effect of continuous mixing of material within the reactor via the internal auger screw. Overall, TCR® is a promising future route for the valorisation of co-form® rejects to produce energy vectors.



中文翻译:

热催化重整联合形式®可以拒绝(废物清洁巾)

Co- form®产品通常用于个人卫生护理(清洁湿巾),家庭清洁(卫生巾和拖把)和吸收性应用。Co- form®是一种热粘合的多层非织造复合材料,Kimberly-Clark在2008年为其工艺申请了专利。Co- form®废料由30%的塑料聚丙烯和70%的木浆纤维组成。回收利用是困难的,迄今为止,尚无研究文章探索热解价衡技术来回收其能量。本文研究共同形式的热解价值增殖®废品成能量载体。制粒共成形®从二次纤维造纸厂得到废品被使用实验室标尺2千克/小时热催化重整(TCR处理®)反应堆。所述TCR ®工艺结合中间热解,使用螺旋钻反应器来加热在中等温度(350-450℃)的材料,并在完全不存在氧的中度固体停留时间(分钟),在固定床反应器后催化重整在700°C下。粒状共成型®废品已成功转化为12%(重量)的生物油,9%(重量)的水相液体,8%(重量)的焦炭和71%(重量)的合成气产品。发现生物油更高的热值是39.36 MJ / kg,与生物柴油相当。发现萘是油中最丰富的芳香族化合物,通过GC-MS测定,相对丰度为15.22%。油酸甲酯(15.86%)是检测到的最丰富的长链烃。产生的气体的较高的热值为11.02MJ.Nm 3和炭为30.79MJ / kg。TCR ®的共同形式转换®废物被证明是将这种废物流评估为可持续能源载体的可行途径。在以前的工作中,气化工艺无法成功地转换具有高塑料含量的有机废物流,而不会导致塑料的团聚和熔化。该TCR ®工艺克服这些问题,没有结块或熔化的证据塑料呈现在反应器内。认为成功的原因是通过施加适度的加热速率(°C / min)和温度(最大700°C),以及通过内部螺旋钻在反应器内连续混合物料的机械效果。总体而言,TCR ®是共同的形式价值增殖充满希望的未来路线® 拒绝产生能量矢量。

更新日期:2018-03-23
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