NOVELTY - A large kelp biomass dry distillation energy self-balancing oil production system, comprises: a fuel starting device; air separation unit; circulating fluidized bed pyrolysis furnace; retort furnaces; macroalgae screw feeders; blower; circulating fluidized bed; cyclone combustion furnace; combustion hearth feed screw feeder; condensate recovery system; precipitator for flue gas purification; and the dry distillation furnace outlet.    USE - Large kelp biomass dry distillation energy self-balancing oil production system (claimed).    ADVANTAGE - According to the system and method, bio-oil production can be realized by large kelp biomass dry distillation in an energy self-balancing manner, the abundant large kelp resource can be efficiently and cleanly utilized, the marine ecological construction can also be promoted to certain extent, the marine biological resources can be protected and reasonably utilized, and the specific marine advantages in China can be fully and reasonably utilized, thus having important economic and strategy significance on promoting the development of national economy.    DETAILED DESCRIPTION - A large kelp biomass dry distillation energy self-balancing oil production system, comprises: a fuel starting device, to be used in fuel-oil system and stable operation; air separation unit for separating out the distillation medium and air flow into the circulating fluidized bed pyrolysis furnace; circulating fluidized bed pyrolysis furnace for dry distillation of large oil-producing algae and seaweed produce semi-coke and non-condensing gas; retort furnaces cyclone, with the separation of solid particles, by carbonization furnace refeeder into circulating fluidized bed combustion furnace, the solid particles comprise semi-coke bed material and algae; retort furnace bed material screw feeder, used to supplement retort bed material; macroalgae screw feeders, macroalgae samples sent for circulating fluidized bed pyrolysis furnace; blower for the flow of air into the circulating fluidized bed combustion furnace; circulating fluidized bed combustion furnace for burning seaweed semi-coke and non-condensing gas to provide heat for the pyrolysis seaweed; cyclone combustion furnace, the combustion furnace refeeder for the separated material into a high temperature circulating fluidized bed dry distillation furnace, a carbonization heat; combustion hearth feed screw feeder, used to supplement the furnace bed material; condensate recovery system for separating by dry distillation furnace gas product cyclone separating macroalgae bio-oil and non-condensing gas, which do not condense gas delivery for non-condensable gas into the storage tank, seaweed oil into the liquid storage tank for storage; precipitator for flue gas purification, where the fly ash separation, together with seaweed ash and bottom ash into the ash slag warehouse, clean flue gas fan pressure; where the fuel starting device has the circulating fluidized bed combustion furnace outlet dense phase region; the combustion hearth feed screw to feeder with the circulating fluidized bed combustion furnace connected to the upper dilute phase region; the blower through the air duct and the air chamber is connected to the combustion furnace; tail of the circulating fluidized bed combustion furnace outlet connected to the cyclone burner, lower part of the combustion furnace refeeder with the circulating fluidized bed dry distillation furnace is connected dense phase region; the combustion furnace exit after cyclone dust collector connected to the duct through the suction fan connected to the smoke; the circulating fluidized bed dry distillation furnace dense phase region connecting the other side of macroalgae screw feeder, the upper dilute phase zone connecting the retort screw feeder; where the dry distillation furnace cyclone circulating fluidized bed pyrolysis furnace is connected to the tail, the lower part of the retort refeeder with the circulating fluidized bed combustion furnace is connected dense phase region; the dry distillation furnace duct and the lower air chamber are connected; and the dry distillation furnace outlet connected to the cyclone condensate recovery system, liquid storage tanks connected to the bottom; the combustion furnace and were confirmed by the dry distillation furnace bottom ash discharge pipe and ash warehouse connection. An INDEPENDENT CLAIM is included for a method of producing large kelp biomass dry distillation energy self-balancing oil, which involves: first step: starting system by starting up the fuel and preheating making the whole macroalgae biomass liquefaction stability of the system; second step: from the circulating fluidized bed combustion furnace cyclone at 750-850 degrees C circulating through the furnace hot ash into the circulating fluidized bed pyrolysis refeeder furnace; third step: crushing dried macroalgae biomass into 0-40 mm particles, the use of a screw feeder into the retort, and thoroughly mixing with the circulating ash heat, and after 15-30 minutes complete large-scale algae biomass pyrolysis; fourth step: submitting the product of step three at a temperature of 450-550 degrees C into a closed gas-solid separation device to separate the gaseous products into the condensate recovery systems, gas product is cooled to below 80 degrees C, separating macroalgae oil and non-condensing gas; fifth step: placing the non-condensing gas into non-condensable gas tanks for storage, then some or all non-condensable gas pressurized as a retort furnace return air feeding device for returning materials, and semi-coke and some macroalgae bed material went into the circulating fluidized bed combustion furnace, semi-coke and coal in circulating fluidized bed combustion furnace combustion, the combustion temperature is 850-900 degrees C, the combustion air is insufficient in the circumstances; sixth step: algae char combustion furnace in the circulating fluidized bed combustion process, the flue gas carries a portion of the particles into the cyclone gas-solid separation, the separated circulating hot ash from the combustion furnace refeeder into retort furnace, as carbonization heat; flue gas produced by combustion furnace dust fly ash is removed, by the induced draft fan pressure into the chimney into the atmosphere; seventh step: circulating fluidized carbonization furnace bed combustion furnace and combustion, the formation of carbonized seaweed ash, bottom ash and fly ash by the dust down into the ash separation compartment.