The modification of screening and washing processes in Heda pulp mill included to change the existing order of screening and washing processes,put the washing prior to the screening;and also put the fine screening after the oxygen delignification;use the slot screen to take the place of the original hole screen and add more high consistency cleaners.
通过将筛选洗涤工艺流程由先筛后洗改造为先洗后筛,同时把精选段置于氧脱木素之后、孔筛换成缝筛,并增加高浓除渣器等技改措施,在漂白化学木浆生产线上把产量由180adt/d(风干)提高到230adt/d,漂后浆质量优于国家标准,筛选排污负荷大幅降低。
Results: Vascular origins in nasal septum and there are superior and inferiors septal posterior nasal artery, anterior ethmoidal artery and posterior ethmoidal artery.
结果 :鼻中隔血供属多源性 ,主要来自鼻后中隔动脉上支、下支 ,筛前、筛后动脉 ,它们入鼻中隔处外径分别为 (0 。
