RESEARCH STATUS AND TREND ANALYSIS OF CLEAN COAL TECHNOLOGY BASED ON PATENT INFORMATION
Clean coal technology is a crucial way to effectively use coal,much helpful in reducing carbon emission and to realize"dual-carbon"goals.This paper,based on Patsnap patent dataset,uses TAM model to analyze global clean coal technologies from technical advances,patent identification and market,and compares them globally,and points out China's technical weaknesses,core technologies and future trend.The present clean coal technologies are upgrading to mature stage from developing stage.China's related patents have issues,such as bad quality,lack of core competitiveness,weak R&D capabilities.Carbon reduction and pollution control are two hotspots in patent application.The future clean coal technology should be directed to comprehensive use of coal.Enterprises shall play a leading role in R&D,and enhance carbon reduction and coal comprehensive use technologies.Governments shall issue supportive polices for the two technical domains,including favorable financial and taxation policies,stimulating enterprises to intensify R&D in clean coal technologies.