US 12,138,575 B2
Pyrolysis bio-oil fractional condensation device and method capable of cooling medium self-circulation
Huiyan Zhang, Nanjing (CN); Shuping Zhang, Nanjing (CN); Bo Peng, Nanjing (CN); and Rui Xiao, Nanjing (CN)
Assigned to SOUTHEAST UNIVERSITY, Nanjing (CN)
Appl. No. 18/012,098
Filed by SOUTHEAST UNIVERSITY, Nanjing (CN)
PCT Filed Dec. 20, 2021, PCT No. PCT/CN2021/139449
§ 371(c)(1), (2) Date Dec. 21, 2022,
PCT Pub. No. WO2022/257412, PCT Pub. Date Dec. 15, 2022.
Claims priority of application No. 202110634144.2 (CN), filed on Jun. 7, 2021.
Prior Publication US 2023/0256356 A1, Aug. 17, 2023
Int. Cl. B01D 5/00 (2006.01); C10B 53/00 (2006.01); C10G 1/00 (2006.01)
CPC B01D 5/0027 (2013.01) [B01D 5/0036 (2013.01); B01D 5/0057 (2013.01); B01D 5/0087 (2013.01); B01D 2202/00 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A pyrolysis bio-oil fractional condensation device capable of cooling medium self-circulation, comprising a primary condensation system, a secondary condensation system and a cooling medium temperature self-regulation heat exchange system; wherein
the primary condensation system structurally comprises a tar condensation device with a direct heat exchange structure, so that high-temperature pyrolysis volatile matters are condensed into tar after directly exchanging heat with the cooling medium; the secondary condensation system structurally comprises a spray chamber with a direct heat exchange structure, so that uncondensed volatile matters after the primary condensation undergo secondary condensation by directly exchanging heat with a spray liquid;
the cooling medium temperature self-regulation heat exchange system structurally comprises a temperature regulation mixer and a plurality of heat exchanger; a heat exchanger I uses a part of the cooling medium heated by the primary condensation system as a heat source for drying a biomass raw material, a heat exchanger II uses the cooling medium cooled by the heat exchanger I as a cold source for cooling the spray liquid, and a heat exchanger III uses the other part of the cooling medium heated by the primary condensation system as a cold source for cooling pyrolysis char generated during pyrolysis; and at the same time, the two streams of cooling medium heated by the heat exchanger II and the heat exchanger III are respectively introduced into the temperature regulation mixer and mixed, and then supplied to the tar condensation device, thereby forming a circulation loop.