Preparing coal water slurry from BDO tar to achieve resource utilization: gasification process of BDO tar-coal water slurryLirui Mao, Hanxu Li, Yuanchun Zhang, Chengli Wu and Yan GengE3S Web Conf., 131 (2019) 01050DOI: https://doi.org/10.1051/e3sconf/201913101050