The invention relates to a process for producing fuel
alcohol by adopting
straw lignocellulose as a
raw material, which comprises the following steps of: (1) crushing of the
straw lignocellulose: crushing the
straw lignocellulose by using a crushing
machine to 80 meshes and
drying at the temperature of 55 DEG C to obtain a straw lignocellulose
powder; (2) fetching the crushed and dried straw lignocellulose
powder, and adding a
sodium hydroxide (NaOH) solution of which the
mass fraction is 1.0 percent to the straw lignocellulose
powder for pretreatment; (3)
cellulose hydrolysis saccharification: adding the
cellulose to the straw lignocellulose powder prepared in the step (2); and stirring for
hydrolysis for 48 hours under the condition that the temperature is 40 DEG C and pH is 4.5 to obtain
cellulose hydrolysis saccharification
hydrolysate; and (4) alcoholic
fermentation: lowering the temperature of the
cellulose hydrolysis saccharification
hydrolysate to 35 DEG C in a
fermentation tank, and adding 2g / L of
yeast to perform a constant-temperature
fermentation reaction to obtain the fuel
alcohol. Compared with the prior art, the process for producing the fuel
alcohol by adopting the straw lignocellulose as the
raw material has the advantages of rich
raw material, low cost, high hydrolysis efficiency, fewer byproducts,
high alcohol yield and the like.