NOVELTY - A temperature-control portion has a cooling-heat intermediation channel (4) in outer periphery of a reaction container (2). The heat-medium and coolant circulation lines (31,36) are connected to switching valves (41,42) and connected to cooling-heat intermediation channel. The pressure of upper header (31a) supplying heat medium or coolant to container is maintained by pressure control valves (34,38). The cooling-heat intermediation flow volume in circulation lines is maintained by a flow control valve (51) in exit side of cooling-heat intermediation channel.    USE - Apparatus for manufacturing bio-coke using biomass such as wood, plant, agricultural product, scrap wood, coppiced timber, pruned branch, plant, agricultural waste, coffee dregs and used tea leaves.    ADVANTAGE - Since the temperature-control portion is provided with cooling-heat intermediation channel formed in outer periphery of the reaction container, the biomass fine granule can be heated or cooled rapidly and the switching between heating and cooling can be performed. The stable cooling-heat intermediation circulation system can be formed by installing the flow control valve and the pressure control valve. The temperature control of the inside of reaction container is carried out steadily.    DETAILED DESCRIPTION - The reaction container accommodates biomass fine granule, and a pressurization structure pressurizes the biomass fine granule. The temperature-control unit performs heating or cooling of the reaction container. The solid substance before and after carbonization, is cooled. The heat medium or coolant supplied by the upper header is collected from the reaction container using a downstream header (31b). The cooling-heat intermediation channels of reaction container sets (100,200) are connected in series. The cooling-heat intermediation channel entrance side of reaction container located upstream is connected to the upper header. The cooling-heat intermediation channel exit side of the lowest downstream side of reaction container is connected to downstream header. One portion of reaction container sets are connected to heat-medium circulation line and other reaction container sets are connected to coolant circulation line. The cooling-heat intermediation circulating load is set such that the cooling-heat intermediation more than the 1/3 of amount of cooling-heat intermediation flowing through the cooling-heat intermediation channel remains in the heat-medium circulation line or the coolant circulation line in the state in which heat medium or coolant flows through cooling-heat intermediation channel. An INDEPENDENT CLAIM is included for bio-coke manufacturing method.    DESCRIPTION OF DRAWING(S) - The drawing shows a block diagram of the bio-coke manufacturing apparatus. (Drawing includes non-English language text)    Reaction container (2)    Cooling-heat intermediation channel (4)    Heat-medium and coolant circulation lines (31,36)    Upstream header (31a)    Downstream header (31b)    Pressure control valves (34,38)    Switching valves (41,42)    Flow control valve (51)    Reaction container sets (100,200)