US 11,692,138 B2
Automatic draft control system for coke plants
John F. Quanci, Haddonfield, NJ (US); Peter Chun, Naperville, IL (US); Milos J. Kaplarevic, Chicago, IL (US); and Vince G. Reiling, Wheaton, IL (US)
Assigned to SUNCOKE TECHNOLOGY AND DEVELOPMENT LLC, Lisle, IL (US)
Filed by SUNCOKE TECHNOLOGY AND DEVELOPMENT LLC, Lisle, IL (US)
Filed on Feb. 16, 2021, as Appl. No. 17/176,391.
Application 15/139,568 is a division of application No. 13/589,009, filed on Aug. 17, 2012, granted, now 9,359,554, issued on Jun. 7, 2016.
Application 17/176,391 is a continuation of application No. 15/139,568, filed on Apr. 27, 2016, granted, now 10,947,455.
Prior Publication US 2021/0163821 A1, Jun. 3, 2021
This patent is subject to a terminal disclaimer.
Int. Cl. C10B 15/02 (2006.01); C10B 21/10 (2006.01); C10B 27/06 (2006.01); C10B 45/00 (2006.01); F22B 1/18 (2006.01); C10B 5/04 (2006.01); C10B 21/20 (2006.01); C10B 27/00 (2006.01); C10B 5/00 (2006.01)
CPC C10B 21/10 (2013.01) [C10B 5/04 (2013.01); C10B 15/02 (2013.01); C10B 21/20 (2013.01); C10B 27/06 (2013.01); C10B 45/00 (2013.01); F22B 1/18 (2013.01); C10B 5/00 (2013.01); C10B 27/00 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A coke oven, comprising:
an oven chamber;
an uptake duct in fluid communication with the oven chamber and configured to receive exhaust gases from the oven chamber;
an uptake damper in fluid communication with the uptake duct and configured to be positioned at one of a plurality of positions including fully opened and fully closed, wherein, in operation, the position of the uptake damper controls an oven draft;
an actuator configured to alter the position of the uptake damper between the plurality of positions in response to a position instruction;
a plurality of coke oven sensors each configured to detect an operating condition of the coke oven, wherein the plurality of sensors comprises a draft sensor configured to detect the oven draft, a temperature sensor configured to detect an uptake duct temperature or a sole flue temperature, and an oxygen sensor configured to detect an uptake duct oxygen concentration in the uptake duct; and
a controller in communication with the actuator and with the plurality of sensors, such that the controller receives a signal from each of the plurality of sensors that corresponds to a measured process value of the coke oven, the controller being configured to provide the position instruction to the actuator, based at least in part on signals received from each the plurality of sensors over a period of time, wherein providing the position instruction causes the actuator to alter the position of the uptake damper and maintain the oven draft at or above a predetermined target oven draft for the coke oven, wherein the target oven draft varies over a duration of a coking cycle based on an elapsed time of the coking cycle, such that the target oven draft is adjusted (i) a first time period after a beginning of a coking cycle, and (ii) a second time period after the first time period has elapsed.