双碳背景下电石行业发展现状及电石法聚氯乙烯研究进展

The development status of calcium carbide industry under the background of dual carbon and the research progress oncalciumcarbide method for polyvinyl chloride

聚氯乙烯(PVC)由于具有优异的机械性能、电绝缘性能和阻燃性能,被广泛应用于工业领域。目前PVC的生产工艺主要有电石法和乙烯法。我国由于“富煤缺油”的资源特点,使得国内PVC市场主要以电石法为主。电石生产属于高耗能行业,生产过程中会造成二氧化碳排放和电能消耗。如何核算电石生产行业碳排放以及指导电石行业低碳、节能、可持续发展,是当前迫切需要解决的问题。本文综述了电石行业生产现状、生产规模、节能降耗手段、碳排放核算、PVC行业碳排放,分析了各工序碳排放以及降低碳排放的工艺和措施,以期为电石法制备PVC的低碳减排、节能降耗提供借鉴。

Polyvinyl chloride(PVC)is widely used in the industrial field because of its excellent mechanical properties,electrical insulation,and flame retardant performance.At present,the production processes of PVC mainly include calcium carbide method and ethylene method.Due to the resource characteristics of"abundant coal and insufficient oil"in China,the domestic PVC market is mainly dominated by the calcium carbide method.Calcium carbide production belongs to the high energy consuming industry,and the production process will cause carbon dioxide emissions and electricity consumption.How to calculate the carbon emissions of the calcium carbide production industry and guide its low-carbon,energy-saving,and sustainable development is an urgent problem that needs to be solved for the high-quality development of the calcium carbide industry.This article provides an overview of the current production status,production scale,energy-saving and consumption reducing measures,carbon emission accounting,and carbon emissions in the PVC industry in the calcium carbide industry,and analyzes the carbon emissions of each process and the processes and measures to reduce carbon emissions,in order to provide reference for low-carbon emission reduction and energy-saving in the preparation of PVC by calcium carbide method.