US3676305A

US3676305A - Dust collector for a by-product coke oven

Info

Publication number: US3676305A
Application number: US879986A
Authority: US
Inventors: Walter Cremer
Original assignee: Heinrich Koppers GmbH
Current assignee: Heinrich Koppers GmbH
Priority date: 1968-12-05
Filing date: 1969-11-26
Publication date: 1972-07-11
Anticipated expiration: 1989-07-11
Also published as: FR2027576A1; BE741832A; GB1291262A; DE1812897A1; DE1812897B2; JPS496161B1

Abstract

A first hood member extends around the coke guide and is movable longitudinally with the coke guide along the side of the coke oven battery. The first hood encloses the coke guide and is in sealing relation with an aligned coking chamber and has an open front portion for the coke being pushed. A dust withdrawal conduit extends forwardly from the upper section of the first hood. A second hood has a frame member supported on a ground level track and is movable longitudinally along the side of the coke oven battery independently of the coke guide. The second hood has an enclosed portal portion in which the quench car and the locomotive are positioned. The second hood has an upwardly extending portion with an open rear end that mates with the open front end of the first hood so that a continuous enclosure is formed when the upper portion of the second hood is aligned with the opening in the first hood and the dust created while the coke is being pushed is evolved within either the first or second hood. A first dust removal device is positioned on the roof of the portal and has a conduit with an open end operable to be pushed in overlying relation with the open end of the conduit extending forwardly from the first hood. A second dust removal device is positioned on the roof of the frame member and is connected by means of a conduit to the upper portion of the second hood.

Description

United States Patent Cremer [54] DUST COLLECTOR FOR A BY- PRODUCT COKE OVEN [72] Inventor: Walter Cremer, Essen, Germany [73] Assignee: Heinrich Koppers Gesellschaft mit beschrankter Haftung, Essen, Germany 221 Filed: Nov.26, 1969 211 Appl.No.: 879,986

[ 1 July 11, 1972 Primary ExaminerNorman Yudkoff Assistant Examiner-David Edwards Attorney-Stanley J. Price, In

[ ABSTRACT A first hood member extends around the coke guide and is movable longitudinally with the coke guide along the side of the coke oven battery. The first hood encloses the coke guide and is in sealing relation with an aligned coking chamber and has an open front portion for the coke being pushed. A dust withdrawal conduit extends forwardly from the upper section of the first hood. A second hood has a frame member sup ported on a ground level track and is movable longitudinally along the side of the coke oven battery independently of the coke guide. The second hood has an enclosed portal portion in which the quench car and the locomotive are positioned. The second hood has an upwardly extending portion with an open rear end that mates with the open front end of the first hood so that a continuous enclosure is formed when the upper portion of the second hood is aligned with the opening in the first hood and the dust created while the coke is being pushed is evolved within either the first or second hood. A first dust removal device is positioned on the roof of the portal and has a conduit with an open end operable to be pushed in overlying relation with the open end of the conduit extending forwardly from the first hood. A second dust removal device is positioned on the roof of the frame member and is connected by means of a conduit to the upper portion of the second hood.

8 Claims, 2 Drawing Figures PHENTEBJUL 1 1 m2 SHEET 2 0F, 2

SECOND HOOD 58 112 L no I I I2 76 a mummwamxm lyrialrlllzll wi" FIG. 2

INVENTOR WHLTER CRLi/YIER HIS ATTY.

DUST COLLECTOR FOR A BY-PRODUCT COKE OVEN BACKGROUND OF THE INVENTION 1. Field of the Invention This invention relates to a dust collector and more particularly to a dust collector for the coke side of a coke oven chamber.

2. Description of the Prior Art The coke side of the battery has a laterally extending bench or platform extending longitudinally along the side of the battery. A coke guide is mounted on rails on the bench and is movable longitudinally into alignment with the coke chamber to be pushed. The coke guide has a lattice framework that is moved into abutting relation with the coke oven door jamb and forms a passageway across the bench or platform to prevent coke spillage thereon during pushing. Below the bench or platform at ground level a quench car is propelled longitudinally along the side of the coke oven battery parallel to and below the platform by means of a locomotive. The quench car is arranged to be positioned below the coke guide and moves longitudinally during the pushing operation to form a relatively uniform bed of coke on the sloping bottom of the quench car. The quench car is then moved to a quenching station with the incandescent coke where the coke is quenched with water. The quench car is then moved to a coke wharf where the coke is discharged onto the wharf for subsequent transportation by conveyor belt to a screening and crushing station where the coke is sized for blast furnace use.

When the coke is pushed into the quench car through the coke guide a partial slight combustion takes place on the surface of the coke resulting from the exposure of the incandescent coke to air. The combustion creates smoke and fine dust particles and the pushing of the coke charge through the guide and into the quench car also results in formation of a coke dust that moves upwardly due to thermal currents created by the hot coke. The smoke, dust and ash are health hazards to the operating personnel and contribute to pollution of the air.

It has been suggested in the past to enclose the coke guide and the area above the quench car with a hood. The dust laden gases accumulate under the hood and are conveyed therefrom to suitable dust removal apparatus where the gases are cleaned and discharged into the atmosphere. The above described apparatus forms a part of the coke guide and is supported by the platform or bench extending longitudinally along the side of the coke oven battery. In order to provide an adequate enclosure over the quench car, it is necessary for the hood to project laterally from the platform a substantial distance and counterweights must be provided on the platform. These counterweights represent an additional load on the platform that can not, in existing installations, be supported by the platform without substantial renovations thereto. There is a need for dust collecting apparatus that efficiently collects both the coke dust formed during the discharge of the coke into the quench car and the smoke and ash formed by the surface ignition of the incandescent coke. There is a further need for apparatus that may be installed in existing coke plants without substantial structural changes.

SUMMARY OF THE INVENTION The present invention is directed to apparatus for removal of dust formed on pushing coke from byproduct coke oven chambers of a regenerative coke oven battery. The apparatus includes a first hood positioned over the coke guide and movable therewith and a second hood positionable in overlying relation with an opening in the first hood and enclosing the quench car and locomotive. The second hood is supported on tracks located at ground level and is movable longitudinally along the coke oven battery in parallel relation to the longitudinally extending platform. Dust removal apparatus is supported by the second hood and includes conduits connected to the first hood for exhausting dust therefrom and for exhausting dust from the second hood.

Accordingly, the principal object of this invention is to provide dust collector apparatus that may be installed in existing by-product coke plants without substantial structural changes.

Another object of this invention is to provide dust collecting apparatus associated with the coke guide and quench car of a regenerative coke oven that is operable to effectively collect the dust and smoke created by the pushing of a coke charge from the coking chamber.

These and other objects and advantages of this invention will be more completely disclosed and described in the following specification, the accompanying drawings and the appended claims.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a view taken along the coke discharge side of a coke oven battery illustrating the dust collecting apparatus positioned in overlying relation with an open coking chamber.

FIG. 2 is a view in section taken along the line IIII of FIG. 1 illustrating in side elevation and in section the dust collecting apparatus and the quench car below the coke guide.

DESCRIPTION OFTI-IE PREFERRED EMBODIMENTS Referring to the drawings there is illustrated diagrammatically a regenerative coke oven battery generally designated by the numeral 10 having a plurality of transverse parallel coking chambers 12. The coke oven side 14 of the battery 10 has vertical beam members 16 with a laterally extending platform 18 positioned above the ground level 20. The platform 18 extends longitudinally along the coke side 14 of the coke oven battery 10 and is supported at spaced intervals by vertical beam members 22. The coke is discharged from the coking chambers 12 into a quench car 24 through a coke guide 26. The coke guide 26 has a pair of vertical side walls 28 and 30, top wall 32 and bottom wall 34. The coke guide 26 extends beyond the periphery of the platform 18 and forms a generally rectangular conduit to transport the coke as it is being discharged over the platform 18 into the quench car 24. The coke guide 26 is mounted on wheels 36 that are positioned on parallel tracks 38 on the platform 18. With this arrangement the coke guide 26 is movable longitudinally along the side of the coke oven to the various coking chambers 12 to provide a conduit for conveying the coke therefrom into a quench car 24 positioned therebelow.

At ground level 20 the quench car 24 is mounted on wheels 40 that are positioned on tracks 42 extending longitudinally along the side of the coke oven battery 10 parallel to the platform 18. A locomotive generally designated by the numeral 44 is coupled to the quench car 24 and is arranged to move the quench car to the quench station where the incandescent coke is quenched. The dust collecting apparatus generally designated by the numeral 46 includes a first hood member 48 that has a generally inverted U shaped configuration and is positioned around the coke guide 26 with an end portion in abutting relation with the wall of the coke oven and an outer open end portion 50 through which the coke may be discharged from the coke guide 26 into the quench car 24. A conduit 52 is secured in an opening 54 at the top portion of the hood member 48 and terminates in an open end portion 56. The conduit 52 extends laterally from the coke oven battery 10.

The dust collecting apparatus 46 has a second hood member 58 supported on an elongated enclosure 60 that ex tends longitudinally parallel to the platform 18. The enclosure 60 has a plurality of vertical beams 62 on one side and other

cal side members

62 and 64 and are positioned on tracks 78 arranged parallel to the tracks 38 on the platform 18. Suitable covering is secured to the outer side of the frame members to form the enclosure 60, such as asbestos or metallic sheathing. Similarly, the front opening 80 of the chamber 74 and the rear opening 82 are enclosed by either folding doors, asbestos curtains or the like to provide a relatively air tight chamber for the quench car 24 and the locomotive 44. Where desired, the frame member may be extended as illustrated in dotted lines on the right side of FIG. 1 by including other vertical frame members and horizontal connecting members with suitable covering on the elongated portion of the enclosure 60. With the latter arrangement, the entire quench car and locomotive may be positioned within the enclosure 74 before beginning the pushing of a coking chamber. I

Supported on the roof portion of the chamber 74 defined by the transverse beams 66 and longitudinal beams 72 is a second hood member 58 that has a bottom opening 84 opening into the chamber 74 and a side opening 86 that has substantially the same configuration as the opening 50 in the first hood 48. When the hood 58 is aligned with the hood 48 the

respective openings

86 and 50 are in overlying relation to each other and provide a connection between the

hoods

48 and 50 so that coke may be discharged from the coke guide 26 into the quench car 24 without dust and smoke flowing through the connections between the

openings

86 and 50. As later explained, a vacuum or suction is imparted to both

hoods

48 and 58 to further reduce the escape of dust through the connection between the

openings

86 and 50 in

respective hoods

58 and 48.

A fan 88 and an air cleaner 90 are supported on the roof of chamber 74 with the outlet from the fan 88 connected to the air cleaner 90, the latter having an opening 92 to the atmosphere. The hood 58 has an opening 94 in the side wall into which one end of a curved or U shaped conduit 96 is connected. The other end of the U shaped conduit 96 is connected to the inlet opening of the fan 88. With this arrangement the fan 88 creates an area of reduced pressure within the enclosure 74 and the hood 86 to thus pull out by vacuum the smoke, dust and the like present within both the enclosure 74 and the hood 58. The reduced pressure within hood 58 further minimizes the escape of dust through the connection between

hood openings

86 and 50. The dust laden air withdrawn from the hood 58 and enclosure 74 is conveyed through the conduit 96 into the fan 88 and is introduced into an air cleaner schematically illustrated and designated by the numeral 90. It should be understood that any suitable air cleaning device such as filters, spray devices, centrifugal separators, electrostatic precipitators or the like may be utilized to separate the dust from the air and discharge dust free air into the atmosphere through the outlet 92.

A second fan 100 and air cleaner 102 are supported on the upper portion of frame member 60 on the opposite side of the hood 58. A conduit 104 has an opening 106 which is arranged to be aligned with the opening 56in the conduit 52 connected to the upper portion of hood 48. With this arrangement the fan 100 is arranged to exhaust the smoke and dust from the hood 48 through conduit 52, conduit 104 and into fan 100. In a similar manner the dust is removed from the air in air cleaner 102 and dust free air is discharged through outlet 108.

To form an air tight enclosure a pair of longitudinal channels 110 extend parallel to the tracks 76 on the inboard side thereof. The channels are filled with sand and a depending seal member 112 is secured to the

side walls

62 and 64 along the entire length of the enclosure 74 and are immersed in the sand in channels 110 to provide a running seal for the enclosure 74.

The quench car 24 has a discharge gate 114 hingedly secured by hinge member 116 to the side thereof opposite the coke guide 26. The quench car 24 has an inclined bottom wall 118 with an extension 120. Where the frame member 60 is positioned adjacent the coke discharge wharf 122 a portion 124 of the frame member may be pivoted about pivot point 126 to form an extension or connecting piece between the wharf 122 and the inclined bottom wall of the quench car 24.

With the above dust collecting apparatus 46 it is now possible to effectively collect the dust and smoke present during the discharging of a coke oven chamber by a first hood 48 secured to and movable with the coke guide 26 and a second hood 58 that is movable independently of the coke guide 26. Further, the hood 58 and enclosure 74 are supported on a suitable concrete pad at ground level and do not exert any forces on the platform 18. The enclosure 74 encloses both the quench car and the locomotive so that all of the smoke and dust evolved is collected by the dust collecting apparatus. This includes the smoke evolved after the coke has been discharged into the quench car 24. The dust collecting apparatus 46 may be erected on existing coke oven batteries without substantial structural changes. The quench car and tracks therefor are located adjacent the coke side of the chamber in existing batteries and the tracks to support the frame member 60 may be positioned on opposite sides thereof without major structural changes to the coke oven battery.

According to the provisions of the patent statutes, the principle, preferred construction, and mode of operation of the invention have been explained, and what is considered to represent its best embodiment has been illustrated and described. However, it should be understood that, within the scope of the appended claims, the invention may be practiced otherwise than as specifically illustrated and described.

What is claimed is:

1. Dust collector apparatus for collecting the dust generated while pushing coke from a by-product coke oven chamber comprising,

an elevated support platform extending longitudinally along the coke side of a coke oven battery and positioned at an elevated location above ground level,

a quench car movably positioned below said support platform and operable to receive coke discharged from said coke oven chambers, said quench car being movable longitudinally along the side of said coke oven battery,

a coke guide movably supported on said support platform and operable to guide the coke from the coke oven chamber into said quench car,

an enclosure member movably positioned on the same level as said quench car and operable to move longitudinally along the side of said coke oven battery independently of said quench car, said enclosure member being operable to be positioned in overlying relation with and enclosing said quench car,

a first hood member enclosing said coke guide, said first hood member being supported by and movable with said coke guide and having a from open portion,

a second hood member extending upwardly from said enclosure member, said second hood member having a rear open portion on substantially the same horizontal plane as said first hood member front open portion and a configuration substantially the same as said first hood member front open portion,

said enclosure member operable when aligned with said coke guide to position said second hood member in overlying relation with said first hood member with said hood member open portions in overlying relation to provide an enclosed passageway for the coke from said coke oven chamber to said quench car positioned within said enclosure,

a first conduit extending from said first hood member having an open end portion,

a second conduit connected at one end to suction means and air cleaner means mounted on said enclosure member, said second conduit having an open end portion arranged to be aligned with said open end portion of said first conduit to thereby connect said first conduit through said second conduit to said suction means and air cleaner means and thereby collect the dust generated in said coke guide in said first hood member and convey said dust from said first hood member to said air cleaner means, and

a third conduit connecting said second hood member to said suction means and air cleaner means to thereby collect the dust generated in said enclosure and convey said dust from said second hood member to said air cleaner means.

2. Dust collector apparatus for collecting the dust generated while pushing coke from a by-product coke oven chamber as set forth in claim 1 in which,

said enclosure means is enclosed on all sides and forms an elongated chamber with the quench car and the locomotive positioned within said chamber.

3. Dust collector apparatus for collecting the dust generated while pushing coke from a by-product coke oven chamber as set forth in claim 1 in which,

said suction means and air cleaner means includes a first exhaust fan and air cleaner connected to said enclosure means to collect the dust within said enclosure means and a second exhaust fan and air cleaner connectable to a hood member enclosing said coke guide to collect the dust within said coke guide.

4. Dust collector apparatus for collecting the dust generated while pushing coke from a by-product coke oven chamber as set forth in claim 1 in which,

said enclosure means includes a wall member facing a coke wharf,

said wall having a section operable to pivot about a horizontal axis and thereby form a platform between said quench car and said coke wharf.

5. Dust collector apparatus for collecting the dust generated while pushing coke from a by-product coke oven chamber as set forth in claim 1 in which,

said enclosure means includes elongated vertical side walls and a roof portion therebetween, said side walls movably set forth in claim 5 which includes,

an opening in said roof portion,

a hood member positioned on said roof portion and surrounding said opening, said suction means connected to said hood member and operable to collect the dust within said chamber and said hood member and convey said dust to said air cleaner means.

7. Dust collector apparatus for collecting the dust generated while pushing coke from a by-product coke oven chamber as set forth in claim 5 which includes,

a pair of spaced elongated channel members positioned adjacent to said elongated vertical side walls,

said channels being substantially filled with a pulverulent material,

said elongated vertical side walls having depending seal members extending into said channels beneath the upper surface of said pulverulent material to thereby form a seal therebetween.

8. Dust collector apparatus for collecting the dust generated while pushing coke from a by-product coke oven chamber as set forth in claim 1, which includes,

first suction means and air cleaner means connected to said second conduit, and

second suction means and air cleaner means connected to said third conduit.

Claims

1. Dust collector apparatus for collecting the dust generated while pushing coke from a by-product coke oven cHamber comprising, an elevated support platform extending longitudinally along the coke side of a coke oven battery and positioned at an elevated location above ground level, a quench car movably positioned below said support platform and operable to receive coke discharged from said coke oven chambers, said quench car being movable longitudinally along the side of said coke oven battery, a coke guide movably supported on said support platform and operable to guide the coke from the coke oven chamber into said quench car, an enclosure member movably positioned on the same level as said quench car and operable to move longitudinally along the side of said coke oven battery independently of said quench car, said enclosure member being operable to be positioned in overlying relation with and enclosing said quench car, a first hood member enclosing said coke guide, said first hood member being supported by and movable with said coke guide and having a front open portion, a second hood member extending upwardly from said enclosure member, said second hood member having a rear open portion on substantially the same horizontal plane as said first hood member front open portion and a configuration substantially the same as said first hood member front open portion, said enclosure member operable when aligned with said coke guide to position said second hood member in over-lying relation with said first hood member with said hood member open portions in overlying relation to provide an enclosed passageway for the coke from said coke oven chamber to said quench car positioned within said enclosure, a first conduit extending from said first hood member having an open end portion, a second conduit connected at one end to suction means and air cleaner means mounted on said enclosure member, said second conduit having an open end portion arranged to be aligned with said open end portion of said first conduit to thereby connect said first conduit through said second conduit to said suction means and air cleaner means and thereby collect the dust generated in said coke guide in said first hood member and convey said dust from said first hood member to said air cleaner means, and a third conduit connecting said second hood member to said suction means and air cleaner means to thereby collect the dust generated in said enclosure and convey said dust from said second hood member to said air cleaner means.

2. Dust collector apparatus for collecting the dust generated while pushing coke from a by-product coke oven chamber as set forth in claim 1 in which, said enclosure means is enclosed on all sides and forms an elongated chamber with the quench car and the locomotive positioned within said chamber.

3. Dust collector apparatus for collecting the dust generated while pushing coke from a by-product coke oven chamber as set forth in claim 1 in which, said suction means and air cleaner means includes a first exhaust fan and air cleaner connected to said enclosure means to collect the dust within said enclosure means and a second exhaust fan and air cleaner connectable to a hood member enclosing said coke guide to collect the dust within said coke guide.

4. Dust collector apparatus for collecting the dust generated while pushing coke from a by-product coke oven chamber as set forth in claim 1 in which, said enclosure means includes a wall member facing a coke wharf, said wall having a section operable to pivot about a horizontal axis and thereby form a platform between said quench car and said coke wharf.

5. Dust collector apparatus for collecting the dust generated while pushing coke from a by-product coke oven chamber as set forth in claim 1 in which, said enclosure means includes elongated vertical side walls and a roof portion therebetween, said side walls movably supported on rail mounted wheels so that said enclosure means is movable along the side of said coke oven battery, and curtain members enclosinG the front and rear openings of said enclosure means to form an enclosed chamber for said quench car and locomotive.

6. Dust collector apparatus for collecting the dust generated while pushing coke from a by-product coke oven chamber as set forth in claim 5 which includes, an opening in said roof portion, a hood member positioned on said roof portion and surrounding said opening, said suction means connected to said hood member and operable to collect the dust within said chamber and said hood member and convey said dust to said air cleaner means.

7. Dust collector apparatus for collecting the dust generated while pushing coke from a by-product coke oven chamber as set forth in claim 5 which includes, a pair of spaced elongated channel members positioned adjacent to said elongated vertical side walls, said channels being substantially filled with a pulverulent material, said elongated vertical side walls having depending seal members extending into said channels beneath the upper surface of said pulverulent material to thereby form a seal therebetween.

8. Dust collector apparatus for collecting the dust generated while pushing coke from a by-product coke oven chamber as set forth in claim 1, which includes, first suction means and air cleaner means connected to said second conduit, and second suction means and air cleaner means connected to said third conduit.