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电石法聚氯乙烯生产工艺汞用量削减效果调查及关键控制参数分析
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Abstract:
电石法聚氯乙烯行业是汞产品用量较大的行业之一，该行业汞用量控制被纳入《关于汞的水俣公约》中，而在实际的控制过程中，企业管理体系的完善和生产工艺过程相关技术参数的控制均直接影响单位产品汞用量的上升和下降，为指导企业完成削减目标，筛选确定对削减工作具有决定性的措施和建议，特选取2家企业进行了5年的跟踪调查和研究，调查结果显示，在做好管理制度体系下，原料气含水率、乙炔纯度和在转化器中的空间流速、转化器反应问题是影响低汞触媒使用寿命的直接原因。
The PVC industry using calcium carbide method is one of the industries with a large amount of mercury products. The control of mercury usage in this industry has been included in the Minamata Convention on Mercury. In the actual control process, the improvement of the enterprise management system and the control of technical parameters related to the production process directly affect the increase and decrease of mercury usage per unit product. In order to guide en-terprises to achieve reduction goals, screening and determining decisive measures and suggestions for reduction work are necessary; Two companies were selected for a 5-year follow-up survey and research. The survey results showed that under a sound management system, the water content of raw gas, acetylene purity, spatial flow rate in the converter, and converter reaction issues were the direct reasons affecting the service life of low mercury catalysts.
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