NOVELTY - A plate-type blister catalytic rectifying tower (7) comprises rectifying tower reaction section (9) containing set of parallel horizontal tower plates and baffle dividing reaction section into lower rectification zone and upper reaction zone provided between 2 vertically adjacent trays in which reaction zone contains riser whose upper end passes through horizontal trays and is connected to rectification zone and whose lower end extends to baffle and communicates with rectifying zone and baffle and reaction zone liquid collecting pipe is set between upper and lower tower plates.    USE - A plate-type blister catalytic rectifying tower for production of biodiesel (claimed).    ADVANTAGE - Plate-type blister catalytic rectifying tower removes effect of gas-liquid mass transfer in reaction and catalyst loading, use of catalytic rectifying tower is simple and environment-friendly, has high conversion rate, reduces waste and separation energy, and increases ratio of feed bio-oil and low-carbon alcohol, and catalyst does not require further processing.    DETAILED DESCRIPTION - A plate-type blister catalytic rectifying tower (7) comprises rectifying tower reaction section (9) containing set of parallel horizontal tower plates and baffle dividing reaction section into lower rectification zone and upper reaction zone provided between 2 vertically adjacent trays in which reaction zone contains riser whose upper end passes through horizontal trays and is connected to rectification zone and whose lower end extends to baffle and communicates with rectifying zone, baffle and reaction zone liquid collecting pipe is set between upper and lower tower plates, upper end of reaction zone liquid collecting pipe is higher than reaction zone packed catalyst bed height, lower end of baffle is connected with lower rectification zone, upper end of riser is covered with blister, top of baffle contains rectifying zone liquid collecting pipe which passes through tower plates, rectifying zone liquid collecting pipe is adjacent to blister, and reaction zone contains catalyst discharge port, liquid-phase material outlet, catalyst discharge port is set on top of catalyst loading port, and liquid-phase material outlet is set on top of liquid-phase material inlet. An INDEPENDENT CLAIM is included for use of plate-type blister catalytic rectifying tower which involves separately preheating low-carbon alcohol and bio-oil, pumping bio-oil into upper portion of reaction section (9) filled with solid acid or alkali, pumping vapor-phase low-carbon alcohol into lower portion of reaction section with molar ratio low-carbon alcohol:bio-oil of 1:3-12, fully contacting low-carbon alcohol with liquid in rectification zone, sending to tower top condenser (11) to liquefy, sending to tower top reflux tank (12), returning part of liquefied low-carbon alcohol to top of tower, sending remaining part to low-carbon alcohol storage tank for recovery, performing transesterification reaction on liquefied low-carbon alcohol and bio-oil in reaction zone, sending reaction product and unreacted raw materials to bottom of rectification zone using reaction zone liquid collecting pipe, contacting vapor-phase low-carbon alcohol with liquefied low-carbon alcohol along riser pipe of rectification zone, sending bio-oil, liquefied low-carbon alcohol, and product to next reaction zone using rectification zone liquid collecting pipe, performing reaction-distillation, sending liquid from bottom of tower to reboiler (13), gasifying low-carbon alcohol, returning low-carbon alcohol to bottom of tower, and stratifying in stratification tank (14) to obtain biodiesel upper layer and glycerol byproduct lower layer.    DESCRIPTION OF DRAWING(S) - The drawing shows a schematic diagram for the use of plate-type blister catalytic rectifying tower.    Catalytic rectifying tower (7)    Reaction section (9)    Tower top condenser (11)    Tower top reflux tank (12)    Reboiler (13)    Stratifying tank (14)