US20090032385A1 - Damper baffle for a coke oven ventilation system - Google Patents

Damper baffle for a coke oven ventilation system Download PDF

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Publication number
US20090032385A1
US20090032385A1 US11/888,331 US88833107A US2009032385A1 US 20090032385 A1 US20090032385 A1 US 20090032385A1 US 88833107 A US88833107 A US 88833107A US 2009032385 A1 US2009032385 A1 US 2009032385A1
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damper
mat
frame
baffle
sub
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US11/888,331
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Bradley G. Engle
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    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
    • C10B27/00—Arrangements for withdrawal of the distillation gases
    • C10B27/06—Conduit details, e.g. valves
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
    • C10B15/00—Other coke ovens
    • C10B15/02—Other coke ovens with floor heating
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
    • F23L13/00—Construction of valves or dampers for controlling air supply or draught
    • F23L13/06—Construction of valves or dampers for controlling air supply or draught slidable only

Definitions

  • This invention relates to coke ovens, and in particular damper baffles used in the ventilation system of coke ovens.
  • Damper block baffles inside the ventilation systems of coke ovens regulate air flow through the ovens to control oven temperatures.
  • damper block baffles consisted of a plurality of refractory damper blocks stacked atop a lift frame that is raised and lowered within the ventilation duct to open and close the air passage.
  • the refractory damper blocks used in the damper block baffles are large heavy pre-cast shapes designed to withstand the high temperatures and act as a thermal barrier. Because of the weight and size of the damper blocks, the baffles require large hydraulic pistons to raise and lower the damper block baffles within the ventilation ducts.
  • refractory damper blocks deteriorate over time and must be routinely replaced.
  • Replacing the bulky and heavy refractory damper blocks is labor intensive and cumbersome within the confined area of a coke oven ventilation system.
  • the entire damper block baffle is disconnected from the hydraulic lift mechanism and lowered out of the ventilation ducts using multiple winches. Once lowered and accessible, used refractory damper blocks must be manually unstacked and hauled out, before replacement blocks can be inserted and stacked onto the lift frame. Multiple people are often required to handle the heavy cumbersome refractory damper blocks.
  • the often crumbling deteriorated refractory damper blocks leave debris in and around the ventilation system of the coke ovens.
  • the present invention seeks to provide a light-weight damper baffle for use in coke ovens, which eliminates the need for the heavy and cumbersome refractory damper blocks.
  • An embodiment of the damper baffle of this invention includes a U-shaped sub-frame and a temperature resistant insulation damper mat draped over and secured upright to the sub-frame.
  • the damper mat is a thick sheet of silica needle mat, which provides the thermal barrier of the damper baffle.
  • the sub-frame is a bent high temperature steel rod which is bolted directly to the base plate of a conventional lift frame and lift mechanism. Two pairs of support plates secure and support the mat over the sub-frame in an upright orientation.
  • the silica needle mat used in the damper baffle of this invention replaces the bulky refractory damper blocks of conventional damper baffles. Because the silica needle mat is a fraction of the weight of the refractory damper block, the weight of the present damper baffle is significantly less than conventional damper baffles. Consequently, weight savings means that the present damper baffle can be replaced in less time, with less labor, more safely and with less difficulty.
  • FIG. 1 is a partial perspective view of a coke oven battery showing an embodiment of this invention incorporated into the ventilation system;
  • FIG. 2 is a partial perspective view of one of the ventilation ducts shown in the coke oven battery of FIG. 1 showing the lift mechanism and a damper baffle embodying this invention;
  • FIG. 3 is an exploded view of the damper baffle of FIG. 2 .
  • FIG. 4 is a side view of the ventilation duct and damper baffle of FIG. 2 with the baffle in a lowered position;
  • FIG. 5 is a side view of the ventilation duct and damper baffle of FIG. 2 with the baffle in a raised position.
  • FIGS. 1-5 illustrate an embodiment of the present invention where reference numeral 10 generally designates a damper baffle for use in the ventilation system of a coke oven.
  • FIG. 1 illustrates a conventional coke oven battery 2 incorporating damper baffle 10 into the ventilation duct 6 of each coke oven 4 .
  • damper baffle 10 is designed to replace conventional damper block baffles, while still using the conventional lift frame 30 and hydraulic lifts 40 .
  • Damper baffle 10 is mounted to a conventional base plate 32 of lift frame 30 .
  • a hydraulic lift 40 mounted under lift frame 30 raises and lowers damper baffle 10 into ventilation duct 6 .
  • damper baffle 10 includes a U-shaped sub-frame 12 mounted to base plate 32 and a thick damper blanket or mat 20 draped over the sub-frame.
  • Sub-frame 12 is a bent stainless steel or other high temperature steel rod having threaded ends 13 , which allows the sub-frame to be bolted to base plate 32 . Threaded ends 13 of sub-frame 12 extend through bores cuts in base plate 32 and are secured by bolts 14 .
  • Damper mat 20 provides the thermal barrier of damper baffle 10 .
  • Damper mat 20 is thick sheet of highly temperature resistant fabric, such as the silica needle mat supplied by Pyro Shield, Inc. of Crown Point, Ind.
  • the silica needle mat material of damper mat 20 is made from continuous filament silica that has a uniform diameter of approximately 8 micron, which makes the material non-respirable and durable insulator for high temperature applications. While silica needle mat provides the desired thermal insulation, durablity and light weight, damper mat 20 may be constructed from other high temperature fabrics and materials within the teachings of this invention.
  • damper mat 20 is draped over sub-frame 12 and overlapped in multiple layers.
  • damper mat 20 is at least two inches thick. This thickness provides the necessary thermal barrier and sufficient structural integrity to hold damper mat 20 upright over sub-frame 12 .
  • damper mat 20 is illustrated as being overlapped back and forth to provide the desired thermal barrier, the same result can be produced by simply using a silica needle mat of greater thickness without overlapping the mat.
  • Damper mats 20 is sandwiched between two pairs of steel support plates 16 and 18 sandwich damper mat 20 to hold damper mat 20 upright in place over sub-frame 12 and prevent the mat from sagging. Each pair of support plates 16 and 18 are secured together by bolts and nuts 17 which extend through damper mat 20 and hold the mat to sub-frame 12 .
  • damper baffle embodying the present invention provides several advantages over refractory block damper baffles.
  • the damper baffle eliminates the need for the cumbersome refractory baffle blocks, which deteriorate and crumble, leaving debris in and around the ventilation system of the coke oven battery.
  • the present damper baffle greatly reduces the time and labor required to replace the damper baffles within the ventilation systems of coke oven batteries. The need to manually un-stack and stack, remove and deliver the cumbersome refractory damper blocks is eliminated.
  • the damper baffle of this invention can be handled easily within the confined area of the coke oven battery with two or fewer people. Replacing the heavy refractory damper blocks with the silica need mat, also reduces the chances of injury from the stacked deteriorating damper blocks falling from the lift frame on laborers replacing the baffles.
  • Conventional lift frames can be modified to use the damper baffles of this invention by simply cutting two holes to receive the ends of the sub-frame. Once the lift frames are modified, replacing damper baffles can be accomplished in short order with only common tools.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Coke Industry (AREA)

Abstract

The damper baffle includes a U-shaped sub-frame and a temperature resistant insulation damper mat draped over and secured upright to the sub-frame for use in the ventilation system of a coke oven. The damper mat is a thick sheet of silica needle mat, which provides the thermal barrier of the damper baffle. The sub-frame is a bent high temperature steel rod which is bolted directly to the base plate of a conventional lift frame and lift mechanism. Two pairs of support plates secure and support the mat over the sub-frame in an upright orientation. The damper baffle seeks to provide a light-weight damper baffle for use in coke ovens, which eliminates the need for the heavy and cumbersome refractory baffle blocks.

Description

  • This invention relates to coke ovens, and in particular damper baffles used in the ventilation system of coke ovens.
    • BACKGROUND AND SUMMARY OF THE INVENTION
  • Damper block baffles inside the ventilation systems of coke ovens regulate air flow through the ovens to control oven temperatures. Heretofore, damper block baffles consisted of a plurality of refractory damper blocks stacked atop a lift frame that is raised and lowered within the ventilation duct to open and close the air passage. The refractory damper blocks used in the damper block baffles are large heavy pre-cast shapes designed to withstand the high temperatures and act as a thermal barrier. Because of the weight and size of the damper blocks, the baffles require large hydraulic pistons to raise and lower the damper block baffles within the ventilation ducts.
  • Because the extreme heat from the coke ovens, refractory damper blocks deteriorate over time and must be routinely replaced. Replacing the bulky and heavy refractory damper blocks is labor intensive and cumbersome within the confined area of a coke oven ventilation system. Typically, the entire damper block baffle is disconnected from the hydraulic lift mechanism and lowered out of the ventilation ducts using multiple winches. Once lowered and accessible, used refractory damper blocks must be manually unstacked and hauled out, before replacement blocks can be inserted and stacked onto the lift frame. Multiple people are often required to handle the heavy cumbersome refractory damper blocks. In addition, the often crumbling deteriorated refractory damper blocks leave debris in and around the ventilation system of the coke ovens.
  • The present invention seeks to provide a light-weight damper baffle for use in coke ovens, which eliminates the need for the heavy and cumbersome refractory damper blocks. An embodiment of the damper baffle of this invention includes a U-shaped sub-frame and a temperature resistant insulation damper mat draped over and secured upright to the sub-frame. The damper mat is a thick sheet of silica needle mat, which provides the thermal barrier of the damper baffle. The sub-frame is a bent high temperature steel rod which is bolted directly to the base plate of a conventional lift frame and lift mechanism. Two pairs of support plates secure and support the mat over the sub-frame in an upright orientation. The silica needle mat used in the damper baffle of this invention replaces the bulky refractory damper blocks of conventional damper baffles. Because the silica needle mat is a fraction of the weight of the refractory damper block, the weight of the present damper baffle is significantly less than conventional damper baffles. Consequently, weight savings means that the present damper baffle can be replaced in less time, with less labor, more safely and with less difficulty.
  • These and other advantages of the present invention will become apparent from the following description of an embodiment of the invention with reference to the accompanying drawings.
    • BRIEF DESCRIPTION OF THE DRAWINGS
  • The drawings illustrate an embodiment of the present invention, in which:
  • FIG. 1 is a partial perspective view of a coke oven battery showing an embodiment of this invention incorporated into the ventilation system;
  • FIG. 2 is a partial perspective view of one of the ventilation ducts shown in the coke oven battery of FIG. 1 showing the lift mechanism and a damper baffle embodying this invention;
  • FIG. 3 is an exploded view of the damper baffle of FIG. 2.
  • FIG. 4 is a side view of the ventilation duct and damper baffle of FIG. 2 with the baffle in a lowered position; and
  • FIG. 5 is a side view of the ventilation duct and damper baffle of FIG. 2 with the baffle in a raised position.
    •  DESCRIPTION OF THE PREFERRED EMBODIMENT
  • FIGS. 1-5 illustrate an embodiment of the present invention where reference numeral 10 generally designates a damper baffle for use in the ventilation system of a coke oven. FIG. 1 illustrates a conventional coke oven battery 2 incorporating damper baffle 10 into the ventilation duct 6 of each coke oven 4. For the sake of simplicity, only those parts of the coke oven and ventilation system necessary for the explanation of the present invention are explained and discussed; however, the present invention can be incorporated into any coke oven ventilation system. As shown in FIG. 2-5, damper baffle 10 is designed to replace conventional damper block baffles, while still using the conventional lift frame 30 and hydraulic lifts 40. Damper baffle 10 is mounted to a conventional base plate 32 of lift frame 30. As shown in FIGS. 4 and 5, a hydraulic lift 40 mounted under lift frame 30 raises and lowers damper baffle 10 into ventilation duct 6.
  • As best shown in FIG. 3, damper baffle 10 includes a U-shaped sub-frame 12 mounted to base plate 32 and a thick damper blanket or mat 20 draped over the sub-frame. Sub-frame 12 is a bent stainless steel or other high temperature steel rod having threaded ends 13, which allows the sub-frame to be bolted to base plate 32. Threaded ends 13 of sub-frame 12 extend through bores cuts in base plate 32 and are secured by bolts 14.
  • Damper mat 20 provides the thermal barrier of damper baffle 10. Damper mat 20 is thick sheet of highly temperature resistant fabric, such as the silica needle mat supplied by Pyro Shield, Inc. of Crown Point, Ind. The silica needle mat material of damper mat 20 is made from continuous filament silica that has a uniform diameter of approximately 8 micron, which makes the material non-respirable and durable insulator for high temperature applications. While silica needle mat provides the desired thermal insulation, durablity and light weight, damper mat 20 may be constructed from other high temperature fabrics and materials within the teachings of this invention.
  • As shown, damper mat 20 is draped over sub-frame 12 and overlapped in multiple layers. Generally, damper mat 20 is at least two inches thick. This thickness provides the necessary thermal barrier and sufficient structural integrity to hold damper mat 20 upright over sub-frame 12. While damper mat 20 is illustrated as being overlapped back and forth to provide the desired thermal barrier, the same result can be produced by simply using a silica needle mat of greater thickness without overlapping the mat. Damper mats 20 is sandwiched between two pairs of steel support plates 16 and 18 sandwich damper mat 20 to hold damper mat 20 upright in place over sub-frame 12 and prevent the mat from sagging. Each pair of support plates 16 and 18 are secured together by bolts and nuts 17 which extend through damper mat 20 and hold the mat to sub-frame 12.
  • One skilled in the art will note that the damper baffle embodying the present invention provides several advantages over refractory block damper baffles. The damper baffle eliminates the need for the cumbersome refractory baffle blocks, which deteriorate and crumble, leaving debris in and around the ventilation system of the coke oven battery. By substituting a silica needle mat in place of the bulky refractory damper blocks, the present damper baffle greatly reduces the time and labor required to replace the damper baffles within the ventilation systems of coke oven batteries. The need to manually un-stack and stack, remove and deliver the cumbersome refractory damper blocks is eliminated. Because the silica needle mat is a fraction of the weight of the refractory damper block, the damper baffle of this invention can be handled easily within the confined area of the coke oven battery with two or fewer people. Replacing the heavy refractory damper blocks with the silica need mat, also reduces the chances of injury from the stacked deteriorating damper blocks falling from the lift frame on laborers replacing the baffles. Conventional lift frames can be modified to use the damper baffles of this invention by simply cutting two holes to receive the ends of the sub-frame. Once the lift frames are modified, replacing damper baffles can be accomplished in short order with only common tools.
  • The embodiment of the present invention herein described and illustrated is not intended to be exhaustive or to limit the invention to the precise form disclosed. It is presented to explain the invention so that others skilled in the art might utilize its teachings. The embodiment of the present invention may be modified within the scope of the following claims.

Claims (6)

1. A damper baffle mountable to a lift mechanism in a coke oven ventilation system, where the lift mechanism raises and lowers the baffle door within a ventilation duct to regulate airflow into the coke oven, the baffle door comprising:
an upright sub-frame mountable to the lift mechanism;
a damper mat of thermal insulating fabric draped over the sub-frame; and
a pair of support members for securing the damper mat to the sub-frame for supporting the damper mat upright over the sub-frame.
2. The damper baffle of claim 1 wherein the damper mat is constructed of silica needle mat fabric.
3. The damper baffle of claim 1 wherein the damper mat is at least 2 inches thick.
4. The damper baffle of claim 1 wherein the damper mat covers the sub-frame.
5. The damper baffle of claim 1 wherein the damper mat is sandwiched between the pair of support members.
6. A damper baffle mountable to a lift mechanism in a coke oven ventilation system, where the lift mechanism raises and lowers the baffle door within a ventilation duct to regulate airflow into the coke oven, the baffle door comprising:
an upright sub-frame mountable to the lift mechanism;
a damper mat of thermal insulating fabric draped over and covering the sub-frame to provide thermal barrier; and
a pair of support members for securing the damper mat to the sub-frame for supporting the damper mat upright over the sub-frame, the damper mat being sandwiched between the pair of support members.
US11/888,331 2007-07-31 2007-07-31 Damper baffle for a coke oven ventilation system Abandoned US20090032385A1 (en)

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WO2020140074A1 (en) * 2018-12-28 2020-07-02 Suncoke Technology And Development Llc Improved oven uptakes
US10968393B2 (en) 2014-09-15 2021-04-06 Suncoke Technology And Development Llc Coke ovens having monolith component construction
US10968395B2 (en) 2014-12-31 2021-04-06 Suncoke Technology And Development Llc Multi-modal beds of coking material
US11008518B2 (en) 2018-12-28 2021-05-18 Suncoke Technology And Development Llc Coke plant tunnel repair and flexible joints
US11008517B2 (en) 2012-12-28 2021-05-18 Suncoke Technology And Development Llc Non-perpendicular connections between coke oven uptakes and a hot common tunnel, and associated systems and methods
US11053444B2 (en) 2014-08-28 2021-07-06 Suncoke Technology And Development Llc Method and system for optimizing coke plant operation and output
US11071935B2 (en) 2018-12-28 2021-07-27 Suncoke Technology And Development Llc Particulate detection for industrial facilities, and associated systems and methods
US11098252B2 (en) 2018-12-28 2021-08-24 Suncoke Technology And Development Llc Spring-loaded heat recovery oven system and method
US11117087B2 (en) 2012-12-28 2021-09-14 Suncoke Technology And Development Llc Systems and methods for removing mercury from emissions
US11214739B2 (en) 2015-12-28 2022-01-04 Suncoke Technology And Development Llc Method and system for dynamically charging a coke oven
US11261381B2 (en) 2018-12-28 2022-03-01 Suncoke Technology And Development Llc Heat recovery oven foundation
US11359146B2 (en) 2013-12-31 2022-06-14 Suncoke Technology And Development Llc Methods for decarbonizing coking ovens, and associated systems and devices
US11359145B2 (en) 2012-12-28 2022-06-14 Suncoke Technology And Development Llc Systems and methods for maintaining a hot car in a coke plant
US11395989B2 (en) 2018-12-31 2022-07-26 Suncoke Technology And Development Llc Methods and systems for providing corrosion resistant surfaces in contaminant treatment systems
US11441077B2 (en) 2012-08-17 2022-09-13 Suncoke Technology And Development Llc Coke plant including exhaust gas sharing
US11486572B2 (en) 2018-12-31 2022-11-01 Suncoke Technology And Development Llc Systems and methods for Utilizing flue gas
US11508230B2 (en) 2016-06-03 2022-11-22 Suncoke Technology And Development Llc Methods and systems for automatically generating a remedial action in an industrial facility
US11643602B2 (en) 2018-12-28 2023-05-09 Suncoke Technology And Development Llc Decarbonization of coke ovens, and associated systems and methods
US11692138B2 (en) 2012-08-17 2023-07-04 Suncoke Technology And Development Llc Automatic draft control system for coke plants
US11746296B2 (en) 2013-03-15 2023-09-05 Suncoke Technology And Development Llc Methods and systems for improved quench tower design
US11767482B2 (en) 2020-05-03 2023-09-26 Suncoke Technology And Development Llc High-quality coke products
US11788012B2 (en) 2015-01-02 2023-10-17 Suncoke Technology And Development Llc Integrated coke plant automation and optimization using advanced control and optimization techniques
US11807812B2 (en) 2012-12-28 2023-11-07 Suncoke Technology And Development Llc Methods and systems for improved coke quenching
US11845898B2 (en) 2017-05-23 2023-12-19 Suncoke Technology And Development Llc System and method for repairing a coke oven
US11851724B2 (en) 2021-11-04 2023-12-26 Suncoke Technology And Development Llc. Foundry coke products, and associated systems, devices, and methods
US11939526B2 (en) 2012-12-28 2024-03-26 Suncoke Technology And Development Llc Vent stack lids and associated systems and methods
US11946108B2 (en) 2021-11-04 2024-04-02 Suncoke Technology And Development Llc Foundry coke products and associated processing methods via cupolas

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US11807812B2 (en) 2012-12-28 2023-11-07 Suncoke Technology And Development Llc Methods and systems for improved coke quenching
US11939526B2 (en) 2012-12-28 2024-03-26 Suncoke Technology And Development Llc Vent stack lids and associated systems and methods
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US11359146B2 (en) 2013-12-31 2022-06-14 Suncoke Technology And Development Llc Methods for decarbonizing coking ovens, and associated systems and devices
US11053444B2 (en) 2014-08-28 2021-07-06 Suncoke Technology And Development Llc Method and system for optimizing coke plant operation and output
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US11788012B2 (en) 2015-01-02 2023-10-17 Suncoke Technology And Development Llc Integrated coke plant automation and optimization using advanced control and optimization techniques
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WO2020140074A1 (en) * 2018-12-28 2020-07-02 Suncoke Technology And Development Llc Improved oven uptakes
US11845897B2 (en) 2018-12-28 2023-12-19 Suncoke Technology And Development Llc Heat recovery oven foundation
US11819802B2 (en) 2018-12-31 2023-11-21 Suncoke Technology And Development Llc Methods and systems for providing corrosion resistant surfaces in contaminant treatment systems
US11486572B2 (en) 2018-12-31 2022-11-01 Suncoke Technology And Development Llc Systems and methods for Utilizing flue gas
US11395989B2 (en) 2018-12-31 2022-07-26 Suncoke Technology And Development Llc Methods and systems for providing corrosion resistant surfaces in contaminant treatment systems
US11767482B2 (en) 2020-05-03 2023-09-26 Suncoke Technology And Development Llc High-quality coke products
US11851724B2 (en) 2021-11-04 2023-12-26 Suncoke Technology And Development Llc. Foundry coke products, and associated systems, devices, and methods
US11946108B2 (en) 2021-11-04 2024-04-02 Suncoke Technology And Development Llc Foundry coke products and associated processing methods via cupolas

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