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煤气化灰水处理及回用系统的结垢成因解析

安佰红 杨宏泉 刘俊 程艳 陈洪斌

安佰红, 杨宏泉, 刘俊, 程艳, 陈洪斌. 煤气化灰水处理及回用系统的结垢成因解析[J]. 环境工程, 2023, 41(5): 52-60. doi: 10.13205/j.hjgc.202305008
引用本文: 安佰红, 杨宏泉, 刘俊, 程艳, 陈洪斌. 煤气化灰水处理及回用系统的结垢成因解析[J]. 环境工程, 2023, 41(5): 52-60. doi: 10.13205/j.hjgc.202305008
AN Baihong, YANG Hongquan, LIU Jun, CHENG Yan, CHEN Hongbin. ANALYSIS ON SCALE FORMATION IN TREATMENT AND REUSE SYSTEM FOR COAL GASIFICATION ASH-CONTAINING WATER[J]. ENVIRONMENTAL ENGINEERING , 2023, 41(5): 52-60. doi: 10.13205/j.hjgc.202305008
Citation: AN Baihong, YANG Hongquan, LIU Jun, CHENG Yan, CHEN Hongbin. ANALYSIS ON SCALE FORMATION IN TREATMENT AND REUSE SYSTEM FOR COAL GASIFICATION ASH-CONTAINING WATER[J]. ENVIRONMENTAL ENGINEERING , 2023, 41(5): 52-60. doi: 10.13205/j.hjgc.202305008

煤气化灰水处理及回用系统的结垢成因解析

doi: 10.13205/j.hjgc.202305008
基金项目: 

宁波市科技计划项目(2020Z102)

详细信息
    作者简介:

    安佰红(1989-),女,博士,主要研究方向为工业废水电化学处理及资源化技术。2010392@tongji.edu.cn

    通讯作者:

    陈洪斌(1969-),男,博士,教授,主要研究方向为水污染控制理论与资源化技术。bhctxc@tongji.edu.cn

ANALYSIS ON SCALE FORMATION IN TREATMENT AND REUSE SYSTEM FOR COAL GASIFICATION ASH-CONTAINING WATER

  • 摘要: 煤气化过程中产生的灰水具有高温、高硬度、高氨和高悬浮物等特点,使现有预处理设施和回用系统的结垢与堵塞现象较为严重。为探明其结垢成因,在调研处理设施的基础上,研究了煤气化装置的灰水处理与回用管道、设施等的垢形物组成与结构。结果表明:灰水预处理与回用管道和设施的垢样形貌多样,呈块状、线状、管状、球状和花瓣状等,由Si、Ca、Mg、B、Al、Fe、S、Na、Mn、Ba等元素组成复杂化合物,以CaCO3、Al2O3·SiO2、MgCO3·3H2O、CaSiO3、K2O·Na2O·Al2O3·SiO2·H2O、Fe2O3、CaSO4、CaO·Al2O3·2SiO2、Ca4Mg[B4O6(OH)6](CO3)2、SiO2等形式存在。高温条件下钙镁硬度等引起的管壁沉积及其他元素的化合物共沉淀、灰水残余煤灰颗粒黏附管壁和设施底部等是成垢的主要原因;提升黑水和灰水的预处理效果,尤其是强化高温条件下的多种金属和非金属离子的同步去除效率是延缓灰水系统结垢的关键。
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  • 收稿日期:  2022-08-07

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