草浆造纸黑液ASF（活性炭、硫酸钠、糠醛）综合利用工艺研究

PRODUCTION OF ACTIVATED CARBON, SODIUM SUL—FATE AND FURFURAL USING PAPER BLACKL IQUOR FROM STRAW PULP PROCESS

目前我国中小型草浆造纸黑液绝大多数仍是直接排放，严重污染江河．一般每生产11纸浆捧出10m。左右的浓黑液，黑液中总固体物含量达130g，L，其中有机物占70％，而术质素又占有机物总量的35％-d2％，聚戊糖占5％-8％，另外还有相当数量的有机酸等，无机物占总固体物的30％左右，主要是NaOH、

Production of activated carbon, sodium sulfate and furfural using black liquor from straw pulp (ASF process) was investigated. The experimental results showed that after one liter of 7-8 Be' black liquor from reed pulp was acid hydrolysis carbonized under low pressure, 20gLY216-79 prime activated carbon could be produced. Na2SO4. 10H2O was able to be separated by filtration, evaporation, and crystallization of the filtrate. More than 40g of HG1 -520-67 secondary Na2SO4 could be produced from the Na2SO4 · 10H2O. The vapor from the evaporation of the filtrate could be used to recover 3.2 g of GB1926-80 secondary furfural. After the processing, more than 95 % of CODCr and 99% of colourity were removed from the black liquor.