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Combustion of Sludge-Lignin in Water-Oxygen Mixture
Journal of Engineering Thermophysics ( IF 2.4 ) Pub Date : 2020-02-17 , DOI: 10.1134/s1810232820010038
O. N. Fedyaeva , A. A. Vostrikov , D. O. Artamonov , A. V. Shishkin , M. Ya. Sokol

Abstract

The paper presents the results of investigation of the products of oxidation of sludge-lignin (waste from the Baikal pulp and paper mill) in H\(_{2}\)O/O\(_{2}\) mixture in the autoclave and semi-flow modes at uniform heating of the reactor up to 750 K. The time dependencies of the reactor wall temperature and the power of ohmic heaters imply that the oxidation starts at 440 K and the maximum oxidation rate is realized at 583-643 K. Mass spectrometry measurements of the composition of the volatile products yielded the temperature dependency of the degree of removal of carbon occurring in CO and CO\(_{2}\) from sludge-lignin. Using physical and chemical methods of analysis it was shown that Al\(_{2}\)O\(_{3}\) (AlOOH in the autoclave mode), Fe\(_{2}\)O\(_{3}\), SiO\(_{2}\), AlPO\(_{4}\), and CaSO\(_{4}\) were major components of the residue after the sludge-lignin conversion. Formation of HCl and H\(_{2}\)SO\(_{4}\) in the course of oxidation of chlorine- and sulfur-containing organic compounds was found to cause corrosion of stainless steel.


中文翻译:

污泥-木质素在水-氧气混合物中的燃烧

摘要

本文介绍了在混合气中H (_ {{2} \) O / O \(_ {2} \) 混合物中污泥-木质素(贝加尔纸浆造纸厂的废料)氧化产物的研究结果。在将反应器均匀加热至750 K的条件下采用高压釜和半流模式。反应器壁温和欧姆加热器功率的时间相关性意味着氧化始于440 K,最大氧化速率在583-643处实现K.对挥发性产物的组成进行质谱测量,得出了 与污泥-木质素中的CO和CO \(_ {2} \)中的碳去除程度有关的温度依赖性。使用物理和化学分析方法表明,Al \(_ {2} \) O \(_ {3} \) (在高压釜模式下为AlOOH),Fe \(_ {2} \) O \(_ {3} \),SiO \(_ {2} \),AlPO \(_ {4} \)和CaSO \ (_ {4} \) 是污泥-木质素转化后残留物的主要成分。 发现在含氯和硫的有机化合物氧化过程中形成HCl和H \(_ {2} \) SO \(_ {4} \)会腐蚀不锈钢。
更新日期:2020-02-17
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