NOVELTY - The method involves producing pulp (200) and black liquor (220) from screened chips of wood during a pulp production process. Water is evaporated from the black liquor in an evaporator (222) to produce concentrated black liquor (223). The concentrated black liquor is divided into two parts (223a, 223b). One of the parts of the concentrated black liquor is treated with treatment agents (300, 301) in elevated temperature and elevated pressure to produce crude biofuel and cooking chemicals (312). The cooking chemicals are conveyed to the pulp production process.    USE - Method for making crude biofuel such as biopetrol, biodiesel or ethanol, and pulp used to produce paper, from screened chips of stem wood in an integrated biorefinery plant (claimed).    ADVANTAGE - The method allows treating the part of the black liquor recovered from the pulp production with an additive in elevated pressure and elevated temperature so as to produce the crude biofuel, which is refined to biofuels, thus allowing the organic substances of the black liquor to be converted to biofuel, and freeding the respective capacity of a recovery boiler, and hence increasing the value of the products, and increasing overall yield of the pulping process. The method allows integrating a gasification equipment to an integrated pulping process equipment to form a single integrated biorefinery plant, thus optimizing the output of the plant with flexibility. The method allows utilizing a chipper for both pulping and gasification processes, thus reducing overall investment costs of the plant. The method allows avoiding the black liquor flow in the recovery boiler, which allows utilizing a smaller recovery boiler for the pulping process, thus reducing the investment costs for the pulping equipment.    DETAILED DESCRIPTION - The treatment agent comprises alkali, water, wood oil distillate, hydrogen, carbonmonoxide, carbon dioxide or nitrogen. INDEPENDENT CLAIMS are also included for the following:    (1) a system for making pulp and crude biofuel from screened chips of wood    (2) a process for integrating a black liquor refining process with a process for producing pulp    (3) an integrated biorefinery plant.    DESCRIPTION OF DRAWING(S) - The drawing shows a flow diagram illustrating an integrated process for producing pulp and making biofuel from black liquor.    Pulp (200)    Black liquor (220)    Evaporator (222)    Concentrated black liquor (223)    Parts of concentrated black liquor (223a, 223b)    Treatment agents (300, 301)    Cooking chemicals (312)