Conventional air incineration of plastic waste has been considered as one of important sources of polychlorinated dibenzo-p-dioxins and dibenzofurans (PCDD/Fs) through de novo synthesis and precursor conversion. Chemical looping combustion (CLC) is an attractive technology for the conversion of plastic wastes to energy with the potential to drastically suppress the formation of PCDD/Fs. In this paper, the iG-CLC (in-situ gasification CLC) experiments of plastic waste were implemented in a semi-continuously operated fluidized bed reactor, which actually simulates the fuel reactor of a continuously-operated interconnected fluidized bed reactor. A kind of low-cost material, natural iron ore without/with 5 wt% CaO adsorbent through the ultrasonic impregnation method, was used as oxygen carrier (OC). Firstly, some key performances of the reactor system, such as the relevance of the bed inventory to the flow rate of fluidizing agent as well as the relationship between the feeding rate and overflow rate of OC, were calibrated. Then, 90 min of single experiment was conducted for each experimental case and an accumulative operation of more than 10 h was attained. Typically, the combustion efficiency can reach at about 98%, and both the carbon conversion and CO₂ yield can approach to 95% at 900 °C and input thermal power of 150 W with a mixture of 5 vol% H₂O and 95 vol% N₂ as the fluidizing agent (U_FR/U_mf = 3). Moreover, the results obtained in the semi-continuously operated fluidized bed reactor demonstrated that CaO decoration to iron ore is conductive to suppressing the formation of chlorobenzene (as a toxic matter and precursor/intermediate of PCDD/Fs) and does not obviously deteriorate the OC performance.

通过从头合成和前体转化，塑料废物的常规空气焚烧被认为是多氯代二苯并对二恶英和二苯并呋喃（PCDD / Fs）的重要来源之一。化学循环燃烧（CLC）是一种吸引人的技术，可将塑料废物转化为能量，并具有极大地抑制PCDD / Fs形成的潜力。在本文中，i G-CLC（原位在半连续运行的流化床反应器中进行了塑料废物的气化CLC）实验，该实验实际上模拟了连续运行的互连流化床反应器的燃料反应器。一种廉价的材料，通过超声波浸渍法，具有/不具有5 wt％CaO吸附剂的天然铁矿石，被用作氧载体（OC）。首先，对反应器系统的一些关键性能进行了校准，例如床层存量与流化剂流速的相关性以及OC的进料速率和溢流速率之间的关系。然后，对每个实验案例进行90分钟的单项实验，并且累计运行时间超过10小时。通常，燃烧效率可达到约98％，并且碳转化率和CO在5％（体积）H ₂ O和95％（体积）N ₂的混合物作为流化剂的情况下，在900°C和150 W的输入热功率下，₂收率可以达到95％（U _FR / U _mf  = 3）。此外，在半连续流化床反应器中获得的结果表明，CaO修饰铁矿石有助于抑制氯苯的形成（作为有毒物质和PCDD / Fs的前体/中间体），并且不会明显破坏OC。表现。