CAJ | 학술논문

研究了一种利用富二氧化碳合成气和生物质炭联合制取二甲醚的方法,其过程包括两个步骤:富二氧化碳合成气调整以及调整后合成气合成二甲醚.在合成气调整过程中,利用生物质炭为原料在Ni/Al2O3催化剂上将富二氧化碳合成气调整为富一氧化碳合成气.经过800℃合成气调整后,合成气中CO2含量大幅降低而CO含量大幅提高,CO2/CO的摩尔比从原始合成气的6.33降至0.21.然后,分别用调整前后的合成气合成二甲醚,结果表明,经过调整后,C转化率得到很大的提高,二甲醚产率比调整前高4倍.本工作提供了一种可利用富二氧化碳生物质合成气制取燃料的途径,并且提供了一种新的利用生物质炭的方法.
연구료일충이용부이양화탄합성기화생물질탄연합제취이갑미적방법,기과정포괄량개보취:부이양화탄합성기조정이급조정후합성기합성이갑미.재합성기조정과정중,이용생물질탄위원료재Ni/Al2O3최화제상장부이양화탄합성기조정위부일양화탄합성기.경과800℃합성기조정후,합성기중CO2함량대폭강저이CO함량대폭제고,CO2/CO적마이비종원시합성기적6.33강지0.21.연후,분별용조정전후적합성기합성이갑미,결과표명,경과조정후,C전화솔득도흔대적제고,이갑미산솔비조정전고4배.본공작제공료일충가이용부이양화탄생물질합성기제취연료적도경,병차제공료일충신적이용생물질탄적방법.
We report on a novel approach toward dimethyl ether (DME) synthesis using crude CO2-rich bio-syngas and biomass char.The crude bio-syngas was derived from bio-oil reforming and was initially conditioned by catalytic conversion into CO-rich bio-syngas using biomass char over the Ni/Al203 catalyst.The molar ratio of CO2 to CO significantly decreased from 6.33 in the CO2-rich bio-syngas to 0.21 after bio-syngas conditioning at 800 C.The yield of dimethyl ether from the conditioned bio-syngas was about four times higher than that from the CO2-rich bio-syngas over the Cu-ZnO-Al2O3/HZSM-5 catalyst.This work potentially provides a useful approach toward producing biofuels and chemicals from bio-syngas and a novel utilization of biomass char.