Research Laboratory (Overview of Technologies)Wood biomass conversion

What is a biorefinery?

At present, many kinds of fuels and chemical products are manufactured from petroleum in oil refineries. By contrast, a biorefinery manufactures these goods from biomass. Nippon Paper encourages in the development of biorefinery technologies that convert wood material into various products.

Conceptual diagram of oil refinery
Conceptual diagram of bio refinery

DKP(Dissolving Kraft Pulp)

DKP equipment in the Kushiro Mill
DKP equipment in the Kushiro Mill

Dissolving pulp (DP) is obtained through isolation of pure cellulose from wood material, in turn becoming the raw material for the rayon textiles. At our Kushiro Mill, we adopted continuous DKP method as the first time in Japan for manufacturing DP.

Torrefaction biomass fuel

Torrefied pellets
Torrefied pellets

Carbonization at lower temperatures than those normally used to make charcoal allows the manufacture of biomass fuel with good grindability and water resistance, as well as energy density much higher than that of wood. This biomass fuel is able to raise the co-combustion rate of biomass in pulverized coal boilers.

Manufacture of chemical products

Together with chemical manufacturers, we start research that separates wood material into its three major constituents - cellulose, hemicellulose, and lignin - and manufactures chemical products from these.

Manufacture of chemical products from wood
Manufacture of chemical products from wood
NEDO project: Development of Manufacturing Processes for Chemical Products Derived from Non-edible Plants
Participating organizations: Sumitomo Bakelite Co., Ltd., Ube Industries, Ltd., Japan Chemical Engineering & Machinery Co., Ltd., Nippon Kayaku Co., Ltd., Taiyo Nippon Sanso Corporation, Teijin Limited, Toray Industries, Inc., Mitsubishi Chemical Corporation, Mitsui Chemicals, Inc., Asahi Glass Co., Ltd., Unitika Ltd., Niigata Bio Research Park, The University of Tokyo, Kyoto University, The National Institute of Advanced Industrial Science and Technology (AIST), Forestry and Forest Products Research Institute