US 12,330,115 B2
Method and apparatus for improved efficiency and flue gas scrubbing in a fired heater using a condensing convection section
Daniel Joseph Barnett, Katy, TX (US); and Daniel Ryan Znidersic, Houston, TX (US)
Assigned to BD Energy Systems, LLC, Houston, TX (US)
Appl. No. 18/261,583
Filed by BD Energy Systems, LLC, Houston, TX (US)
PCT Filed Jan. 14, 2022, PCT No. PCT/US2022/012460
§ 371(c)(1), (2) Date Jul. 14, 2023,
PCT Pub. No. WO2022/155434, PCT Pub. Date Jul. 21, 2022.
Claims priority of provisional application 63/137,520, filed on Jan. 14, 2021.
Prior Publication US 2024/0075425 A1, Mar. 7, 2024
Int. Cl. B01D 53/26 (2006.01); B01D 53/14 (2006.01); B01D 53/62 (2006.01)
CPC B01D 53/265 (2013.01) [B01D 53/1418 (2013.01); B01D 53/1475 (2013.01); B01D 53/62 (2013.01); B01D 2257/504 (2013.01); B01D 2258/0283 (2013.01)] 27 Claims
OG exemplary drawing
 
1. A method comprising:
heating a process fluid, comprising a hydrocarbon, in a first heat exchanger coil in a convection section of a fired heater, with a flue gas to cool the flue gas to below a dew point and form condensate;
collecting and removing the condensate from the convection section;
heating the process fluid from the first heat exchanger coil with the flue gas, in a second heat exchanger coil, upstream of the first heat exchanger coil with respect to flue gas flow through the convection section, to superheat and/or vaporize at least a portion of the process fluid; and
reacting the superheated and/or vaporized portion of the process fluid from the second heat exchanger in a radiant section of the fired heater.