CIESC Journal ›› 2023, Vol. 74 ›› Issue (8): 3266-3278.DOI: 10.11949/0438-1157.20230723

• Fluid dynamics and transport phenomena • Previous Articles     Next Articles

Study of reaction and flow characteristics in multi-nozzle pulverized coal gasifier with co-processing of wastewater

Chen HAN1(), Youmin SITU1, Bin ZHU2, Jianliang XU1(), Xiaolei GUO1, Haifeng LIU1   

  1. 1.Shanghai Coal Gasification Engineering Technology Research Center, East China University of Science and Technology, Shanghai 200237, China
    2.Ningxia Baofeng Energy Resources Group Co. , Ltd. , Yinchuan 750000, Ningxia, China
  • Received:2023-07-12 Revised:2023-08-19 Online:2023-10-18 Published:2023-08-25
  • Contact: Jianliang XU


韩晨1(), 司徒友珉1, 朱斌2, 许建良1(), 郭晓镭1, 刘海峰1   

  1. 1.华东理工大学上海煤气化工程技术研究中心,上海 200237
    2.宁夏宝丰能源集团股份有限公司,宁夏 银川 750000
  • 通讯作者: 许建良
  • 作者简介:韩晨(1998—), 男, 硕士研究生,
  • 基金资助:


Entrained-flow coal gasification technology is the key technology of cleaning coal utilization. During the industrial gasification process, it is difficult to treat the waste brought by production. In this paper, an industrial OMB pulverized coal gasifier is taken as the research object. The multiphase flow and reaction process in the gasifier are studied by numerical simulation. The effects of injection of low-temperature wastewater on reaction and heat transfer processes in gasifier are studied. The comparison between the simulation results and the industrial data shows that the simulation methods in this paper are reliable. The results show that the injection of wastewater can effectively reduce the temperature of the top and upper cone of gasifier, and can also reduce the temperature of the whole refractory materials. The wastewater flow blocks the impact of the rising refracted flow in the furnace on the top, reducing the temperature of the top space. The ash deposition rate on the top wall of the gasifier first increases and then decreases as the wastewater increases, while other wall surfaces are less affected. The carbon conversion rate slightly decreases, while the effective gas yield increases. The input of wastewater leads to a significant impact in particle deposition rate on the top wall, while other parts of the wall are less affected. Co-processing of wastewater can increase the effective gas output of the gasifier and extend the service life of the top burner, which makes it a good way to utilize waste resources. Research has found that the recommended mass flow rate of wastewater is 12—14 t·h-1.

Key words: coal gasification, opposed multi-burner, refractory material, waste treatment, numerical simulation


利用气化技术处理有机废液是废弃物资源化利用的新途径。以工业多喷嘴对置式粉煤气化炉为研究对象,采用数值模拟的方法研究了协同处理废液的气化炉内反应和流动过程。研究结果表明,废液的输入降低了出口合成气中CO的含量,增加了H2、H2O和CO2的含量;废液输入使出口合成气温度降低,碳转化率降低,有效气收率增加。废液流阻挡了炉内上升折射流对顶部的冲击,降低了顶部空间的温度。气化炉顶部壁面的灰渣沉积速率随着废液增加呈现先增大后减小的趋势,其他部位壁面受影响较小。协同处理废液能够增加气化炉的有效气产量,延长顶部开工烧嘴的使用寿命,是良好的废弃物资源化利用途径。综合考虑,建议的废液输入量为12~14 t·h-1

关键词: 煤气化, 多喷嘴, 耐火材料, 废物处理, 数值模拟

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