石油焦在水泥行业的应用及前景分析

延迟焦化装置是炼油厂处理重质劣质渣油的重要重油加工手段。2018年全球石油焦总供应量130 Mt，其中硫质量分数大于3%的石油焦占总产量的67.84%。石油焦广泛应用于水泥、电解铝、钢铁、玻璃、电厂及化工等行业。2018年全球水泥行业石油焦用量39.2551 Mt，占全球石油焦总供应量的30.09%，欧洲、日本、韩国、印度等地区的水泥企业大量使用石油焦。我国石油焦在电解铝行业使用量较大，2018年达到18.3819 Mt，但在水泥行业使用量仅为0.4390 Mt。在水泥生产中使用石油焦，其硫元素大部分以硫酸盐的形式固定于水泥熟料中。国外可以安全环保地使用高硫石油焦作为水泥窑煅烧的燃料，满足当地排放要求，而且采用长协定价机制，获取具有稳定性价比优势的石油焦，提高了水泥企业使用石油焦的积极性。通过提高石油焦性价比、拓展石油焦在水泥行业的销售渠道和加大石油焦出口力度等措施，可以拓宽高硫石油焦使用范围，在满足环保法规前提下解决我国高硫石油焦出路问题。

APPLICATION OF PETROLEUM COKE IN CEMENT INDUSTRY AND PROSPECT ANALYSIS

The delayed coker is an important processing method for heavy and inferior residuum in refineries. In 2018, the total supply of petroleum coke in the world was 130 Mt, of which the petroleum coke with sulfur content greater than 3% accounted for 67.84% of the total production. Petroleum coke is widely used in cement, electrolytic aluminum, steel, glass, power plant and chemical industry. In 2018, the consumption of petroleum coke in the global cement industry was 39.2551 Mt, accounting for 30.09% of the total supply of petroleum coke. Cement enterprises in Europe, Japan, South Korea, India and other regions used petroleum coke in large quantities. Petroleum coke is widely used in electrolytic aluminum industry in China, reaching 18.3819 Mt in 2018, but only 0.4390 Mt in cement industry. When petroleum coke is used in cement production, most of its sulfur can be fixed in cement clinker in form of sulfate. In foreign countries, high sulfur petroleum coke can be used safely and environmentally as the fuel for cement kiln calcination to meet the local emission requirements. Through long-term cooperative pricing mechanism, cement enterprises can purchase petroleum coke with stable cost performance advantage, which improves the initiative of cement enterprises to utilize petroleum coke. By improving the performance price ratio, expanding the sales channels in cement industry and increasing the export intensity, the application scope of high sulfur petroleum coke can be widened, and the outlet problem of high sulfur petroleum coke in China can be solved under the premise of meeting the environmental protection regulations.