Evaluation of the combined process of supercritical water oxidation and gasification for Lurgi coal gasification wastewater treatment
发布时间：2025-04-30
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- 发布时间：
- 2025-04-30
- 论文名称：
- Evaluation of the combined process of supercritical water oxidation and gasification for Lurgi coal gasification wastewater treatment
- 发表刊物：
- Fresenius Environmental Bulletin
- 摘要：
- Degradation of Lurgi coal gasification wastewater in supercritical water was investigated in a batch reactor, and a combined process of supercritical water oxidation (SCWO) and gasification was put forward to utilize the material and energy in SCWO effluent. The technical feasibility and economy were evaluated. In the SCWO process, when operated at condition of 500 °C, 25 MPa, oxygen ratio of 3.5 and residence time of 15 min, the concentrations of COD, NH3-N and volatile phenol in effluent reduced to 27, 11 and 0.4 mg/L, respectively, where the removal efficiencies were 99.81%, 99.85% and 99.99%, accordingly. The effluent could reach national discharge standard I (GB 8978-1996), and can be used as the gasification agents of gasifier via a pressure reducer. For a single Lurgi gasifier, the combied process could save 23 t/h of steam and 1550 kg/h of O2, which is equal to 4996 yuan/h.
- 合写作者：
- Yu Zhen Wang , Shu Zhong Wang, Yang Guo, Dong Hai Xu
- 是否译文：
- 否
- 发表时间：
- 2012-12-01