Coke oven flue gas sharing
AssigneeSun Coke Company
InventorRichard W. Westbrook
Life of this patent
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Abstract
The invention provides a method and apparatus for decreasing gas flow rates in a sole flue gas system for a coke oven during at least an initial coking operation after charging a coking oven with coal. The method includes providing a duct system between a first coke oven having a first coking chamber and a second coke oven having a second coking chamber to direct at least a portion of gas from a gas space in first coking chamber to the second coke oven thereby reducing a gas flow rate in the first sole flue gas system of the first coke oven. Reduction in sole flue gas flow rates has a beneficial effect on product throughput, the life of the coke oven and environmental control of volatile emissions from coke ovens.
Claims28
A coke oven battery comprising at least a first coke oven and at least a second coke oven, each of the first and second coke ovens containing a coking chamber defined by chamber sidewalls, chamber roof and chamber floor, wherein each coking chamber includes a gas space above a coke bed and wherein the chamber floor below the coke bed of the first coke oven is heated by a first sole flue gas system, the chamber floor of the second coke oven is heated by a second sole flue gas system and wherein at least one of the chamber sidewalls between the first and second coke ovens contains at least one downcomer in flow communication between the gas space of the first coking chamber and the first sole flue gas system for directing flue gases from the gas space of the first coking chamber to the first sole flue gas system and the coke oven battery contains a connecting gas conduit in gas flow communication between the gas space of the first coking chamber and the gas space of at least the second coking chamber or the sole flue gas system of at least the second coke oven for directing at least a portion of flue gas from the gas space of the first coking chamber to the second coke oven whereby the flue gas flow rate in the first sole flue gas system is decreased with respect to a first coke oven in the absence of said gas conduit.
A flue gas sharing system for a coke oven battery containing at least a first coke oven and a second coke oven, the first coke oven having a first sole flue gas system, a first coking chamber and a first gas space above a coke bed in the first coking chamber, and the second coke oven having a second sole flue gas system, a second coking chamber and a second gas space above a coke bed in the second coking chamber, the flue gas sharing system comprising a refractory lined duct in gas flow communication between the first gas space and at least the second gas space or the second sole flue gas system whereby a flue gas flow rate in the first sole flue gas system is reduced compared to a flue gas flow rate in the first sole flue gas system in the absence of the refractory lined duct.
A flue gas sharing system for a coke oven battery containing at least a first coke oven and a second coke oven, the first coke oven having a first sole flue gas system and a first coking chamber and the second coke oven having a second sole flue gas system and a second coking chamber, the flue gas sharing system comprising a refractory lined duct in gas flow communication between the first coking chamber and the second coking chamber whereby a flue gas flow rate in the first sole flue gas system is reduced compared to a flue gas flow rate in the first sole flue gas system in the absence of the refractory lined duct.
A flue gas sharing system for a coke oven battery containing at least a first coke oven and a second coke oven, the first coke oven having a first sole flue gas system and a first coking chamber and the second coke oven having a second sole flue gas system and a second coking chamber, the flue gas sharing system comprising a refractory lined duct in gas flow communication between the first sole flue gas system and the second sole flue gas system whereby a flue gas flow rate in the first sole flue gas system is reduced compared to a flue gas flow rate in the first sole flue gas system in the absence of the refractory lined duct.
A method for decreasing gas flow rates in a sole flue gas system for a coke oven during at least an initial coking operation after charging a coking oven with coal, the method comprising providing a duct system between a first coke oven having a first coking chamber, a first gas space above a coke bed and a first sole flue gas system and a second coke oven having a second coking chamber, a second gas space above a second coke bed and a second sole flue gas system to direct at least a portion of gas in the first gas space to at least the second gas space or the second sole flue gas system for the second coke oven thereby reducing a gas flow rate in the first sole flue gas system of the first coke oven.
Dependencies are inferred from the claim text.