摘要
利用热重分析仪对化工制药工艺过程产生的残渣的燃烧进行了实验研究,结果表明化工残渣有较高的燃烧热值,低位发热量为3 631 kJ.kg-1,且燃烧过程中有氯化氢气体产生.为了使残渣能够更好的燃烧,实验过程中分别加入了木屑和煤,发现木屑及煤的混入具有良好的助燃效果.进一步加入氧化钙固氯剂,通过实验研究了不同钙氯比条件下固氯效果.实验结果表明,加入固氯剂后能够有效地抑制氯化氢的生成.钙氯质量比为4∶1,能够得到最佳的固氯效果,固氯率达到85%,继续添加固氯剂,固氯效果基本保持不变.同时发现,温度在650℃左右氧化钙固氯效果最佳,接近82.6%.700℃后,固氯效果有明显下降.
With the help of the thermal-gravity analyzer （TGA）, the combustion characteristics of the residues from a pharmaceutical factory were experimentally investigated. The result showed that the chemical residue had a higher thermal value, and the low heat value of the tested chemical residue was 3 631 kJ· kg^-1. It was also found that hydrogen chloride was released during the combustion process. In order to assist the combustion of chemical residue, both wood powder and coal were added to chemical residue in the experiment. It was found that the combustion of chemical residue was improved by adding wood powder and coal as well. Aimed to prevent the yield of hydrogen chloride from chemical residue combustion, a certain amount of CaO was mixed with residue as chloride capturer. It was demonstrated that the yield of hydrogen chloride was significantly inhibited by the presence of CaO in the sample. Nearly 85% chloride in the residue was captured for a mixing ratio of Ca/Cl increased to 4 ：1. It was found that the optimum dechlorination temperature is about 650℃ and the efficiency of dechlorination was near to 82.6%. The removal of chlorine decreased clearly when the combustion temperature was above 700 ℃.
出处
《浙江工业大学学报》
CAS
2007年第3期251-254,273,共5页
Journal of Zhejiang University of Technology
关键词
废弃物衍生燃料(RDF)
化工残渣
燃烧
热重分析
氯化氢
钙化物
固氯
refuse derived fuels（RDF）
chemical residue
combustion
thermal-gravity analysis
hydrogen chloride
calcium compounds
dechlorination
