Integrated Kraft pulp mill and thermochemical conversion system

An integrated Kraft pulp mill and thermochemical conversion system, the system comprising:

• a Kraft pulp mill comprising a digester for digesting a lignocellulosic material with white liquor to produce pulp and black liquors;
• a thermochemical conversion subsystem comprising:
• at least one mixing tank comprising (i) black pulping liquors received from the pulp mill and (ii) an organic matter feedstock received from another source, independent of the pulp mill, and (iii) water, to produce a reaction mixture, wherein the organic matter feedstock is other than a pulping liquor;
• a reactor vessel configured to treat the reaction mixture, which is received from the mixing tank and comprises the organic matter feedstock which is other than a pulping liquor, at a reaction temperature and pressure suitable for conversion of all or a portion of said organic matter feedstock which is other than a pulping liquor, as well as the black pulping liquors, in the reaction mixture into a product mixture comprising a bioproduct and an aqueous stream containing both organic and inorganic compounds;
• and
• a depressurizer for depressurizing the product mixture received from the reactor vessel;
• and
• one or more conveyors for conveying the pulping liquors from the pulp mill to the mixing tank.