US 11,891,581 B2
Tower bottoms coke catching device
Gregory A. Cantley, Findlay, OH (US); Ross Vail, Findlay, OH (US); Kathleen Yaden, Findlay, OH (US); and Ray Brooks, Findlay, OH (US)
Assigned to MARATHON PETROLEUM COMPANY LP, Findlay, OH (US)
Filed by MARATHON PETROLEUM COMPANY LP, Findlay, OH (US)
Filed on Mar. 21, 2023, as Appl. No. 18/124,230.
Application 18/124,230 is a continuation of application No. 17/523,776, filed on Nov. 10, 2021, granted, now 11,634,647.
Application 17/523,776 is a continuation of application No. 16/946,584, filed on Jun. 29, 2020, granted, now 11,203,719, issued on Dec. 21, 2021.
Application 16/946,584 is a continuation of application No. 16/124,322, filed on Sep. 7, 2018, granted, now 10,696,906, issued on Jun. 30, 2020.
Claims priority of provisional application 62/565,227, filed on Sep. 29, 2017.
Prior Publication US 2023/0220286 A1, Jul. 13, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. C10G 9/20 (2006.01); B01D 45/08 (2006.01); C10G 45/02 (2006.01); C10G 9/18 (2006.01); B01J 8/00 (2006.01); C10B 43/06 (2006.01); C10G 7/10 (2006.01); C10G 47/00 (2006.01); C10G 9/16 (2006.01)
CPC C10G 9/16 (2013.01) [B01D 45/08 (2013.01); B01J 8/008 (2013.01); C10B 43/06 (2013.01); C10G 7/10 (2013.01); C10G 9/18 (2013.01); C10G 9/20 (2013.01); C10G 45/02 (2013.01); B01J 8/003 (2013.01); C10G 47/00 (2013.01); C10G 2300/107 (2013.01); C10G 2300/1077 (2013.01); C10G 2300/4031 (2013.01); C10G 2300/4056 (2013.01); C10G 2300/708 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A coke catching device to be positioned inside a petroleum product processing unit, the coke catching device comprising:
a bottom section configured to be positioned inside the petroleum product processing unit adjacent an outlet thereof, the bottom section having a plurality of apertures therein;
a grid section connected to the bottom section and including a plurality of openings therein, the plurality of openings being sized to retain large spalled coke pieces in the petroleum product processing unit and to permit at least some spalled coke pieces to pass therethrough, the large spalled coke pieces defined as those spalled coke pieces unable easily to fit through the plurality of openings in the grid section; and
a top section connected to the grid section, each of the top section, the grid section, and the bottom section in combination defining a liquid pathway through one or more of the plurality of openings of the grid section, through one or more of the plurality of apertures of the bottom section and into the outlet of the petroleum product processing unit, thereby to allow small pieces of coke contained in the liquid petroleum product within the petroleum product processing unit to pass through to the outlet while preventing large pieces of coke contained in the liquid petroleum product from passing through when the petroleum liquid flows into the grid section and to the outlet prior to output of the refined petroleum liquid.