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Thermodynamic Analysis of Incineration Treatment of Waste Disposable Syringes in an EAF Steelmaking Process

机译：热力学分析垃圾一次性注射器焚烧处理煤层炼钢工艺

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摘要

Disposal of waste syringes in a safe and eco-friendly way has been an issue of considerable scale for decades. The generated amount of waste syringes has escalated with the rapid growth in population and wide acceptance towards single-use medical devices. Some hospitals have their own on-site incinerators, but recent tightening of air quality regulations and landfill levies led to the closure of many on-site incinerators. The solution to this problem implicates the development of an environmentally-sound method that would employ these waste materials. This work investigates a thermodynamic modelling approach for incineration treatment of waste plastic syringes in Electric Arc Furnace (EAF) steelmaking. Mass balance was obtained from HSC Chemistry thermochemical package. The results indicate that the rate of iron oxide reduction in the slag is higher when coke is partially replaced by waste plastic syringes. Furthermore, the amount of dust and stack gas emission was reduced by around 0.4% and 1.25% respectively by replacing 20%-weight of pure coke with waste plastic syringes. The study demonstrates part of the coke can be successfully replaced by waste plastic syringes in electric arc furnace to provide additional energy from combustion without affecting the main process.
机译：以安全且生态的方式处理废物注射器一直是几十年来的问题。生成的废物注射量随着人口的快速增长和对单用医疗装置而广泛的接受。有些医院拥有自己的现场焚烧炉，但最近收紧空气质量法规和垃圾填埋场征收导致了许多现场焚化炉的关闭。解决此问题的解决方案涉及开发将采用这些废料的环保方法。这项工作研究了电弧炉（EAF）炼钢中废塑料注射器焚烧处理的热力学建模方法。从HSC化学热化学包装中获得质量平衡。结果表明，当焦炭被废塑料注射器部分取代时，炉渣中的氧化铁减少的速率更高。此外，通过用废塑料注射器代替20％的纯焦炭，分别减少了灰尘和堆积气体排放量分别减少了约0.4％和1.25％。该研究证明了一部分焦炭可以通过电弧炉中的废塑料注射器成功取代，以提供燃烧的额外能量而不影响主要过程。

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