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电石是PVC生产的主要原料,用电石为原料生产的PVC树脂占PVC生产总量的63％。由于冶金工业的发展增加了对电石的需求,电石的价格已从1994年初的1300元/吨持续上升,至今已超过2000元/吨,并有继续上升的趋势。这使PVC生产成本每吨增加1000元以上。又因美国埃克森公司烯烃装置发生爆炸及日本三菱公司的油化石化中心因缺水而停产的影响,国际市场的乙烯、丙烯紧缺,使以乙烯为原料生产PVC树脂成本增高。电石和乙烯的紧缺是导致PVC树脂价格上升的一个重要因素。 尽管我国PVC市场缺口较大,但国际市场的PVC价格坚挺,继续
Calcium carbide is the main raw material for PVC production. PVC resin produced from calcium carbide accounts for 63% of the total PVC production. As the development of the metallurgical industry has increased the demand for calcium carbide, the price of calcium carbide has increased continuously from 1,300 yuan/ton at the beginning of 1994, and it has surpassed 2,000 yuan/ton so far, and has continued to rise. This increases the PVC production cost by more than 1,000 yuan per ton. Due to the explosion of olefin equipment from Exxon of the United States and the suspension of production due to lack of water in the oil and petrochemical center of Japan’s Mitsubishi Corporation, the shortage of ethylene and propylene in the international market has increased the cost of producing PVC resin from ethylene. The shortage of calcium carbide and ethylene is an important factor in the rise in the price of PVC resin. Although the PVC market gap in China is relatively large, the PVC price in the international market is firm and continues.