电石法PVC转型升级迫在眉睫

Group 1 - The core point of the article highlights the urgent need for the calcium carbide method PVC industry to undergo transformation and upgrade due to environmental pressures and supply-demand imbalances [1][2][3] Group 2 - The Minamata Convention on Mercury, effective since August 16, 2017, aims to control and reduce mercury emissions, with the calcium carbide method PVC industry being a key area of focus [1] - The calcium carbide method uses mercury chloride as a catalyst, accounting for approximately 60% of the total mercury consumption in the country, facing mandatory upgrades to avoid forced exit as the 2032 deadline for banning native mercury mining approaches [1] - The National Development and Reform Commission has listed the calcium carbide method PVC in the "High Pollution Process Elimination Directory," requiring a 50% capacity replacement by 2027 [1] - PVC industry has been suffering from low profits due to supply-demand imbalances, with domestic PVC social inventory increasing by 24.48% year-on-year as of October 2025 [2] - The real estate market's deep adjustment has led to significant supply-demand imbalances, causing PVC prices to remain low [2] - New PVC production capacity is expected to reach 2.5 to 3.5 million tons this year, bringing total domestic PVC capacity to around 30 million tons, further exacerbating the supply-demand imbalance [2] - The market is experiencing a squeezing effect, with the ethylene method gradually taking market share from the calcium carbide method, which has historically dominated the PVC industry [3] - Ethylene method PVC production is expected to account for about 40% of total capacity by 2030, driven by cost advantages and environmental pressures [3] - The combination of environmental regulations, supply-demand imbalances, and competitive pressures will accelerate the elimination of inefficient capacities in the calcium carbide method PVC industry, pushing towards a more environmentally friendly and ethylene-based production structure [3]