焦炭
碳化
tar(计算)
反应后焦炭强度
生物炭
石油焦
煤焦油
冶金
材料科学
原材料
热解
燃烧
煤
废物管理
化学
复合材料
有机化学
扫描电子显微镜
计算机科学
工程类
程序设计语言
作者
Lin Wang,Yongbin Yang,Yang Ou,Yong Dong,Qiang Zhong,Yan Zhang,Qian Li,Zhensheng Huang,Tao Jiang
出处
期刊:Fuel
[Elsevier]
日期:2024-02-01
卷期号:358: 130238-130238
标识
DOI:10.1016/j.fuel.2023.130238
摘要
The combustion of pulverized fuels in industrial production is inefficient and aggravates haze formation. A novel and green approach via synergetic using two solid waste resources (waste bamboo powder and waste coke breeze) for producing formed biocoke products as a metallurgical coke substitute was proposed in this study. A biochar with high fixed carbon (87.32 %) and low volatiles (2.49 %) was obtained by bamboo powder pyrolysis at 1000 °C for 30 min. Adding this biochar can enhance the strength of the formed coke product prepared using coke breeze with coal tar pitch as the binder. The cracks and pores between coke breeze particles inside the product can be filled by biochar, increasing the product's density. Furthermore, the carbonization of coal tar pitch as the binder can be improved by adding biochar, further enhancing the product strength. A formed biocoke product, with 34.5 MPa compressive strength, 41.29 % CSR and 30.59 % CRI, was obtained at a 2:8 mass ratio (biochar to coke breeze) by carbonization at 1100 °C under a nitrogen atmosphere for 30 min. The experiments of simulating blast furnace production using mixtures of the formed biocoke product with the metallurgical coke (with 21.12 % CRI and 64.58 % CSR) in different mass ratios were carried out. 4 % of the metallurgical coke for blast furnace ironmaking can be replaced by obtained formed biocoke product. This study achieved sustainable high-value-added recycling of coke solid waste resources. It can be an essential reference for recycling other pulverized solid fuels.
科研通智能强力驱动
Strongly Powered by AbleSci AI