关键词: 石油化工, 原料替代, 二氧化碳, 非粮生物质, 废弃聚合物

Abstract:

The combination of global "overcapacity" and high feedstock costs is the major challenge facing petrochemical industry in China. Reasonable feedstock substitution is an important way to assist petrochemical industry turn losses into profits in China. Herein, three suggestions on feedstock substitution were proposed. Firstly, olefin and alkane mixtures were used as ethylene feedstock by adopting polymerization- separation technologies, which can significantly reduce the feedstock cost of ethylene industry, solve the problem of insufficient ethylene feedstock and create a new polymer industry since there were enough low-cost mixtures of olefin and alkane in China. Secondly, carbon dioxide, waste polymers and non-food biomass such as straw and branches were used as feedstock to produce existing petrochemical products, which was possible to help petrochemical industry of China to achieve low-cost green development. The third was to learn from petrobras, coupling biochemical industry with petrochemical industry. In this way, petrochemical plants can produce both petroleum-based products and high-value-added bio-based products.

Key words: petrochemical, feedstock substitution, carbon dioxide, non-food biomass, waste polymer