采用综合性热解和化学漏工艺,将纸废料转化为煤炭,和化学花剂
Andrea Salimbeni1, Marta Di Bianca2, Andrea Maria Rizzo1
1RE-CORD, Viale Kennedy, 182, 50038 Scarperia e San Piero, FI, Italy; University of Florence, Department of Industrial Engineering, Via di S. Marta, 3, 50139 Firenze, FI, Italy.
Waste management (New York, N.Y.)
|December 22, 2023
概括
这项研究整合了缓慢的热解和化学液,以回收造纸厂的纸废物 (PW). 该工艺有效地将PW衍生的煤炭升级为类似煤炭的材料,使闭环循环回收和生产成为可能.
科学领域:
- 材料科学 材料科学 材料科学
- 化学工程是化学工程的重要组成部分.
- 环境科学 环境科学
背景情况:
- 造纸厂的纸废料 (PW) 含有塑料,金属薄膜和生物基聚合物.
- 在PW中高度的和金属阻碍了其通过燃烧或高温热化学过程的价值化.
- 开发有效的PW回收方法对于纸业的可持续废物管理至关重要.
研究的目的:
- 调查缓慢的热解和化学液的整合,以回收纸废物 (PW).
- 升级PW衍生煤炭为适用于工业应用的类似煤炭的材料.
- 评估从PW生产气和闭环循环回收的潜力.
主要方法:
- 粉末废物 (PW) 在400°C和500°C的温度下经过缓慢的热解.
- 在80°C下使用1.4M HCl的化学液处理了2小时,以去除无机化合物.
- 液被NaOH处理以使其沉,并对其特性进行分析.
主要成果:
- 缓慢的热解产生了大约30%的炭质量,由于高无机含量 (36%),75%的原料的化学能量在热气中回收.
- 化学液有效地从500°C的热解炉中去除了约93%的和约100%的和.
- 升级的煤炭含有15.5%的灰,与化石煤相比,该工艺使得每干PW的潜在生产量为8公斤的.
结论:
- 集成的缓慢热解和化学浸出过程对回收纸废物 (PW) 有效.
- 该方法将PW衍生的煤炭升级为高质量的,类似煤炭的材料,促进其价值化.
- 该过程支持纸厂内的闭环回收利用,并为联合生产提供了潜力.
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