The invention discloses a paper pulp-
capacitance carbon joint production method, and belongs to the technical field of paper pulp and carbon materials. The method comprises the following steps: (1) pulping
papermaking raw materials by using an alkaline method, carrying out filter pressing separation, and cleaning paper pulp; (2) concentrating,
drying and
grinding a
black liquor to obtain alkali
lignin dry powder; (3) mixing the alkali
lignin dry powder with an alkali activator and a co-activator,
grinding, and aging; (4) performing high-temperature
carbonization-activation on the mixture; (5) performing post-treatment on the carbonized material to obtain
capacitor carbon; and (6) recovering alkali from the
water washing liquid of the carbonized material, and circularly using the alkali liquid for pulping and the alkali activator of the
capacitor carbon. The byproduct alkali
lignin generated by alkaline pulping is directly used as the
raw material for manufacturing the
capacitor carbon, the alkali is recovered and circularly used as the alkali liquor for pulping and the activator of the capacitor carbon,
pollution and waste are not generated, 80% or more of the alkali activator can be recycled, good environment-friendly and ecological benefits are achieved, and very high social and
economic benefits can be generated.