JPS5822064B2 - Method for controlling coke oven emissions - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION SUMMARY OF THE INVENTION A method is disclosed for controlling emissions from hot coke discharged from the oven of a coke oven battery from the time the discharge begins until the time the coke reaches a cooling station.

Coke from the oven passes through a coke guide and a smoke exhaust hood into an open one-spot cooling wagon.

The hood covers the wagon during discharge and is connected to an exhaust system containing a gas purification system, which admits sufficient air into the foot to control emissions and allows coke to be discharged into the cooling wagon. The volatiles and other combustible materials released from the coke are burned during and for a short time afterwards.

During the movement of the open one-spot cooling wagon from under the hood to the cooling station, the visible emissions released from the hot coke have an opacity of less than 40%.

The method can also be practiced using different designs of one-5pot refrigerated wagons, including covered one-spot wagons that receive coke through an opening in the wagon.

A gas exhaust-cleaning system is associated with the freight car, and the exhaust-cleaning system is operated at a predetermined speed while the hot coke is being discharged from the oven into the freight car, drawing a sufficient amount of air into the freight car for release. control and burn off volatiles and other combustible materials released from coke.

The exhaust cleaning system operates at a predetermined rate during and after the period when coke is being discharged from the oven into the freight car.

During the journey of the one-spot cooled wagon from the oven to the cooling station, the exhaust gas cleaning system can be operated at a lower speed than said predetermined speed, reducing the visible emissions released into the atmosphere by the hot coke through the openings in the wagon. The object has an opacity of 40% or less.

The present invention relates to a method for controlling coke oven emissions.

Recent environmental concerns include increased efforts by businesses and governments around the world to explore solutions to pollution problems that can be applied to air and water.

The present invention aims to improve the air quality in or near a coke plant by controlling the emissions that normally occur when coke is extruded from a coke oven.

Coke is produced by heating coal in the absence of air in a by-product oven that is designed and operated to collect volatiles emitted by the coal during the coking process.

The oven is constructed of refractory bricks and is long and narrow;
It is tapered from one end to the other, ie, one end is narrow and the other end is slightly wider, so that the coke can be easily pushed out of the oven.

The end of each oven is provided with a removable refractory coated door which is placed in place and sealed during the coking process by a self-sealing device or sealant.

Coal is filled into the oven through several ceiling openings called filling holes, which are closed by a cast iron lid after the oven is filled.

Multiple ovens built in side-by-side relationship form a structure called a battery, which can consist of as many as 80 or more ovens.

The battery side at the narrow end of the oven is called the "pusher side," and the opposing battery side at the wide end of the oven is called the "coke side."

Each side of the battery is provided with a bench that serves as a working platform and is located above ground level but below the bottom of the oven.

One or more batteries is called a coke plant, in which one or more coke cooling stations are associated, the location of which depends on the relative location of the batteries.

The operation of the coke oven battery is supported by several large mobile machines.

Each oven is designed to contain a fixed volume of coal discharged from a rally car, which moves on a longitudinally extending rail on top of the battery.

At ground level, a track extends in the longitudinal direction of the pusher side of the battery and independently of the battery, on which the pusher device runs.

The pusher device is generally a combination of a door remover, leveler, and pusher.

The door remover removes the pusher side door from sealing engagement with the oven, holds the door while the oven is pushed out, and then reinstalls the door in the oven.

The leveler runs through the oven a short distance from the top of the oven to level the coal immediately after the oven is filled with coal.

The pusher includes a large reciprocating beam with a ram or enlarged head that passes through the oven from a narrow pusher end to a wide coke end to push coke out of the oven at the end of each coking cycle.

Extending longitudinally on the coke side of the battery on the coke side bench is a door stripper which operates similarly to that on the pusher side and installs a coke guide which is coupled to the door stripper.

The coke guide provides a path for the hot coke to flow into the oven from which the coke is forced, across the coke side bench, until it falls into the cooling wagon.

At ground level, a track extends in the longitudinal direction of the coke side of the battery and independently of the battery, on which the refrigerated freight cars run.

This track extends to a cooling station where the hot coke in the cooling wagons is cooled with large quantities of water.

A typical coke oven built over the years, for example in the United States, has a coking volume of about 500 cubic feet (14,16 m3), or a coking capacity of about 9 tons, and is about 37 feet (11,28 m3) long. ) 10 feet tall (
3,05m) and approximately 18 inches (45,76771
).

The normal coking time or coking cycle for coke in such ovens was about 18 hours or a coking rate of about 1 inch (2,54 CrrL) per hour.

The refrigerated wagons used for this type of kettlery are open wagons, which run while the coke is discharged from the oven into the wagon, and are mounted on the sloping bottom of the wagon with a thickness of about 2 feet (61CrfL).
) was designed to receive a relatively uniform coke bed of approximately 40 feet (12.2 m) in length.

This wagon was equipped with power-operated gates on the side of the wagon farthest from the battery and on the lower side of the sloping bottom.

These gates were closed while the coke was being discharged into the wagons and while the wagons were traveling to and from the cooling station, and were opened to drain the coke from the wagons.

Holes or slots in the gate allow water that does not evaporate during the coke cooling process to drain from the wagon during or after cooling.

Most modern coke oven batteries built around the world in the past 15 years have considerably larger ovens than those built before, and have the labor savings benefits associated with operating larger batteries.

The large oven is approximately 1400 cubic feet (39,65 m
3) and a coke production capacity of approximately 23 tons or more.

These ovens are approximately 50 feet (15,24 m) long and over 20 feet (6,1 m) high and approximately 18
(45.7 c/rL).

Like older batteries, modern ovens have a normal coking time or coking cycle of about 18 hours, or a coking rate of about 1 inch per hour.
4G-11L).

The cooling wagons used for the batteries of large ovens were initially larger than the old moving wagons, preferably 65mm in length.
~75 feet) (39.6~4.s, 7m).

However, over the past few years, a trend has emerged towards refrigerated wagons that are designed and operated differently than this moving wagon.

This new type of refrigerated wagon is designed to accommodate the full capacity of coke discharged from one oven while it is stationary, and is designed to accommodate the entire volume of coke that is discharged from one oven while it is stationary.
e-spot) is called a freight car.

One-spot freight cars are approximately 20-25 feet (12,2-
], 5.2 m), which is considerably shorter than previous mobile coke wagons.

Agencies have been established to establish regulations that define acceptable limits for pollutants released into the air, and companies are exploring ways to comply with these regulations.

Previously, this regulation in the United States stated:

That is, ``operating any device to produce, cause, permit, or tolerate smoke or other visible emissions of greater than 40% opacity for more than 15 minutes in any 24-hour period.'' Must not be.

” An accepted visual method for measuring opacity to air pollution is the RINGELMANN
) device, which was compiled and published in 1956 by McGill, Holden and Alacrae by Matsuf Grow-Hill Book Co. in the Air Pollution Handbook.
Reference may be made in particular to section 6.7, pages 6-33 to 6-36, which section is hereby incorporated by reference.

The opacity value is defined as a term in "Industrial Pollution Control Handbook" edited and published by Bart F. Lund in 1971 by Matsufukuro-Hill Publishing Co., Ltd. on page 21 as follows:

That is, ``(A) Measurement of opacity with respect to emissions is
It is defined as the apparent obscuring of the observer's field of view equal to the apparent obscuring of smoke of magnitude on the Ringelmann chart.

The smoke emission standard limits emissions as smoke density on the Ringelmann scale, where the numbers on this scale vary from 0 to 5, corresponding to a ``% darkness'' of 0 to 100.

In order to comply with regulations such as those mentioned above, companies are devoting considerable effort to reducing emissions from coke plants.

These emissions can be classified as intermittent or continuous in nature, and this invention is intended to reduce intermittent emissions, particularly those associated with coke oven extrusion operations. directed towards.

An extrusion operation can be defined as the operation of removing hot coke from a coke oven and transporting it to a cooling station, beginning when the coke side door is removed from the coke oven and cooling of the hot coke begins. It continues until it is done.

Extrusion emissions may be defined as any air pollution generated by or resulting from the extrusion operation, in particular visible smoke and fine solid particles of coke or undercoked coal.

Emissions vary widely depending on the battery and are related to the age, design, maintenance and operation of the battery, especially the filling and heating operations and the allotted coking time cycles.

Emissions are caused by a variety of factors.

The coke extruded from any oven is crushed as it falls from the guide into the cooling wagon, resulting in varying amounts of grits or fine particles.

The coke exiting the corners of the oven contains undercoked coal and tar, which burns and produces smoke as the coke is forced out of the oven.

The extreme temperature difference between the hot coke and the outside air creates strong air currents that carry coke and uncokened coal particles into the air and accelerate the combustion of combustible solids and gases.

Finally, a cooling wagon of hot coke moves from the oven where the coke was discharged to a cooling station.

During this time, the passage of air through the coke creates an air flow that carries away fine grit and continues combustion of the hot coke.

No discussion of coke oven extrusion emissions would be complete without considering coke quality.

The length of coking time determines the "coke quality", which is defined as the "greenness" j of the coke extruded from the oven.

Green coke is coke whose volatiles have not been completely distilled off during the coking process, as evidenced by the severe black emissions rising from the coke-cooled wagons containing the hot coke forced out of the oven.

A skilled observer can judge the quality of coke extruded from an oven based on its degree of "greenness", for example compared to a "clean" extrudate, i.e. one that emits little or no visible emissions. It can be judged as extremely raw, raw or slightly alternate.

An important factor to consider with green extrudates is that when sealed and in contact with air, they can generate explosive concentrations of flammable substances such as CO and H2.

For example, 6 mole percent CO and H2 or 4% H2 are explosive concentrations.

All equipment for controlling coke oven extrusion emissions must be designed to control the emissions generated as the green coke is discharged from the oven.

Many systems and devices have been proposed for controlling coke oven extrudate emissions.

For example, two publications: Iron and Steel Engineers (October 1972), No. 86-9.
“Coke Oven Air Emission Reduction” and Iron Making and Steel Making (1975), p. 4;
Reference may be made to "Control of Coke Oven Emissions" in Vol. 2, No. 3, pp. 157-187, which describes several systems including:

(1) A self-contained hood system mounted on the bench includes a coke guiding machine that cooperates with the hood connected to the gas scrubber through a duct.

The gas scrubber is mounted on the coke guide or in a wagon associated with this guide, and the hood is designed to extend above the open mobile cooling wagon over its entire width and part of its length. and collect the emissions generated when the hot coke is discharged into the cooling wagon.

(2) The enclosure and hood system installed on a thermal wagon is referred to as a "mobile" system and includes a one-spot cooling wagon, over which a hood is mounted, the hood being such that it fully encloses the top of the cooling wagon. designed with an opening that cooperates with the end of the coke guide.

The openings allow the coke pushed out of the guide to fall into the wagon as the coke is discharged from the oven.

Emissions from the coke are discharged from the cooling wagon via ducts, which are connected to a washing system mounted on the wagon or on the articulated trailer.

(3) Fixed duct hoods and cleaning systems are
"Land-based" systems include a separate emissions collection main that extends along the coke side of the battery and has a valved outlet adjacent to each oven and a fan and wash coupled to the main. Equipped with a container.

The hood and duct section are connected to the coke guiding machine and to the collection main during the period when the coke is being pushed out of the oven and into the moving open cooling wagon, covering the entire width of the wagon and only a portion of its length. cover.

Although each of the above systems has had some success in reducing emissions, the following drawbacks are known.

(1) Bench-mounted self-contained hood systems are large and heavy, extending over a large portion of the coke side bench.

Additionally, the efficiency of effluent collection is greatly affected by the large air gap between the hood bottom and the moving open cooling wagon at the sloping bottom, resulting in a normal coking cycle when the wagon moves out from under the hood and travels to the cooling station. There is no clear method for controlling emissions from hot coke obtained from.

(2) Mobile system wagons will have a length of 10 feet or more.

This system is difficult to adapt to existing coke plants where space is limited, has high capital and operating costs, and requires special cooling systems in conjunction with covered one-spot cooling wagons.

Mobile systems are just emerging in the United States, and special problems associated with excessive wagon length, weight, and special cooling systems remain unresolved in production.

(3) The efficiency of emissions collection in land-based systems is greatly affected by the large air gap between the hood bottom and the moving open cooling wagon on the sloped bottom, when the wagon moves out from under the hood and travels to the cooling station. There is no explicit method for controlling emissions from hot coke obtained from a normal coking cycle.

In Japan, where land-based systems are widely used, the normal coking cycle is referred to as a "no-king period."
The coke is further heated in the oven during this period to ensure that all volatiles are driven off and the coal is fully coked.

Although the soak period minimizes any contaminants released during the journey of the hot coke in the freight cars to the cooling station, there are significant production penalties associated with the soak period.

Plants that have tried bench-mounted self-contained hood systems and land-based systems have had to use larger draft and exhaust systems, resulting in much higher operating costs to improve emissions collection efficiency. Ta.

In view of the above, according to the present invention, a coke guiding machine is cooperatively connected to a one-spot coke cooling freight car, and the hot coke is pushed out from the coke oven into the freight car through the coke guiding machine, and the hot coke is pushed out into the freight car. from about 1,000 to about 3,500 sc per ton of coke forced into the freight car, at least a portion of which constitutes the coke emissions.
fmd (approx. 28.32~99.12mF under standard conditions)
After the removal of the gas is substantially completed, the gas is passed through a gas cleaning device, and the freight car is moved to a cooling station, exposing the hot coke in the freight car to the atmosphere and removing the gas from the freight car. A method for controlling coke oven emissions, characterized by reducing the coke emissions to an opacity of 40% or less, with or without further removal of gas from the hot coke to a gas cleaning device during the journey to a cooling station. is provided.

In one aspect of the invention, the method uses an open one-spot cooling wagon and further employs a smoke hood that covers the cooling wagon and is connected to an exhaust and cleaning system.

In another aspect of the invention, the method uses a one-spot coke cooling wagon with an opening for receiving hot coke from a coke oven and with connections to exhaust and cleaning equipment.

a period during which hot coke is forced from the oven through a coke guide into a cooling car, and a short period after this period;
Exhaust and purification systems draw in sufficient air to (b) combust volatiles and other combustible materials released from the cabinet, and (b) reduce the products of incomplete combustion to a concentration below the lower explosive limit. (c) prevent overheating of the system; and (d) accommodate the gas undulations or blowouts that may occur as the coke fractures and falls into the freight cars, so that the hot coke substantially eliminates emissions. A refrigerated freight car can be moved from the oven to the cooling station without evacuation.

Objects and advantages of the invention will become apparent from the following description, which refers to the accompanying drawings.

In the method of the present invention for controlling coke oven extrudates using the apparatus shown in FIGS. 3 m) chamber 25 with
The oven 11 has a volume of 1392 cubic feet (
39,42 m3) of coal from the hearth 24 in 19 feet 3
Fill to the coal line approximately 13 inches (33 Cr/l) above the furnace top 26.

The coal is heated in an oven in the absence of air for a nominal coking time or coking cycle of about 18 hours to produce about 235 tons of coke.

During the coking cycle, the gases released from the coal are absorbed into the space or passageway 5 between the top and the furnace top 26.
5 and enters the battery gas collection system.

After the coking cycle is complete, insert the oven door (not shown) into the pusher end of oven chamber 25 (
(not shown) and the coke side end 27.

The coke guide 14 on the coke guide wheel 29 is moved into alignment with the oven chamber 25 and the transition portion 32 of the coke guide is moved into position relative to the coke side oven end 27.

When moving the coke guiding machine 14, the battery side 46
The hood 15, which is fixed to the outer end of the guide 14, is also moved into a position aligned with the oven chamber 25 and the double duct assembly 40-40' is placed above the two mouths 3γ of the main collection pipe 20. move to position.

When the guide machine 14 and the hood 15 are aligned with the oven chamber 25, the one-spot open cooling freight car 16 is placed in the hood 15.
The top flat bar 36 of the freight car 16 and the flat bar 45 of the lower part 44 of the hood 15 are brought into close proximity.

The open coke-cooled wagon used here is one in which an area corresponding to the length and width of the entire top of the wagon is open to the atmosphere, or about 30% of this area can be opened to the atmosphere as necessary or desired. be.

When the guide machine 14, hood 15, and cooling wagon 16 have all arrived at the predetermined positions, lower the pre-entering duct connections 41-41' at the lower ends of the hood ducts 40-40' to the main collection pipe 200 opening. 37, and the mouth valve mechanism 4
2-42' to open the mouth valves 38, best shown in FIG.

Fan 22 at the end of main collection pipe 20 in FIG.
operates continuously, and when the mouth valve 38 of the mouth part 37 opens, air is taken in through the coke guide 14 and the hood 15, and the connecting duct parts 50, 51, 40-40', the main collecting pipe 20, After passing through the gas purifier 21 and fan 22, the clean gas is exhausted to the atmosphere.

The gas purifier 21 and fan 22 are standard devices,
It is well known to those skilled in the art.

The emissions control device is activated and the evacuation of coke mass 60 from oven chamber 25 is initiated.

A pusher ram (not shown) is brought into contact with the coke at the pusher end of the oven chamber 25 and the ram is slowly moved into the chamber and protrudes from the coke end 27 to partially penetrate the coke guide 14. .

Movement of the ram forces coke out of chamber 25 through coke guide transition section 32 and coke guide 14.

At the end of the guide 14 furthest from the oven 27,
The coke is no longer held by the guide 14 and breaks up and falls into the cooling wagon 16, in which the entire coke mass from the oven chamber 25 is deposited.

While the coke is being forced out of the oven chamber 25, the exhaust air provided by the fan 22 is forced out of the oven chamber 25.
into the hood 15 through the chamber passage 55 at the top, i.e. between the top of the coke lump 600 and the oven top 26 and the connecting guide passage 56 at the top of the coke guide 140, i.e. between the top of the coke lump 60 and the coke guide top 31. Let air in.

At the same time, air is admitted into the hood 15 through the air gap 52 between the cooled wagon top flat bar 36 and the lower hood flat bar 45 and through the air opening 48 (see FIG. 5) on the battery side 46 of the hood.

Most of the air introduced into the hood occurs adjacent to the bottom of the hood below the level of the coke guide bottom 30, and this air is mixed with the worming emissions that discharge coke into the cooling wagon 16 and into the hood. 15.

Air and emissions flow from the hood 15 to the hood 1 opposite the air opening 48 on the battery side 46 of the hood 15.
50 through the outlet connection 50 located near the top and on the vertical centerline of the oven, and then through the connection ducts 51, 40.
-40', 41-41', through the main collection pipe 20 and through the gas cleaning device 21, where the contaminants in the gas are removed, and then the clean gas is exhausted to the atmosphere.

It is desirable to locate an exhaust offtake near the top of the hood to take advantage of the increased temperature of the emissions from the hot coke mass and to minimize the exhaust power required to contain and collect these emissions.

Locating the offtake in the hood 15 opposite the air opening 48 on the battery side 46 of the hood and on the vertical centerline of the oven ensures good contact between the falling hot coke and the air introduced into the hood. When the coke falls into the cooling wagon 16, dust removal of the coke is promoted.

After all the hot coke has been discharged from the oven chamber 25 into the cooling wagon 16, the wagon remains in the lower position of the hood 15 for a while, during which time the fan 22 blows out the air. Continue to introduce the remainder of the system into the hood 15 to capture any emissions released while the cooled wagon 16 filled with hot coke remains under the hood 15.

When the dust removal period ends, the locomotive 17 (Fig. 4) moves the open cooling car 16 from below the smoke exhaust hood 15 along the track 18 to the cooling station 19, during which the hot coke is heated to an opacity level of 4.
No more than 0% emissions are released6, but the hot coke in the wagon is exposed to the atmosphere and no gas is removed from the hot coke.

In the cooling station 19, the hot coke is cooled with a large amount of water, and then the wagon 16 is moved to a coke storage yard (not shown), where the coke is discharged into the storage yard via a wagon gate 57.

Referring to the drawings, and in particular to FIG.
1, a coke oven battery 10, a coke side bench 12, a door device 13, a coke guiding machine 14,
Hood 15, cooling wagon 16, cooling wagon locomotive 17, cooling wagon track 18, cooling station 19, and main collection pipe 20
, a gas purifier 21 , and an induced draft fan 22 .

Each oven 11 includes a top fill hole 23 as shown in FIG. 4, and a floor 24, a coking chamber 25, a top 26 and a door (not shown) as seen in the embodiment of FIG. The coke side oven end 27 has been removed.
Equipped with.

Coke side bench 12 extends the entire length of battery 10 and supports coke guide tracks 28.

The door device 13 and a coke guiding machine freight car 29 that supports the coke guiding machine 14 are placed on a track 28.

The door arrangement 13 is attached to the coke guide machine 14 by a hook-and-release coupler when the coke guide wagon is moved along the coke side bench.

The coke guiding machine 14, which is open at both ends, has a bottom 30 (see the embodiment in FIG. 2), which is at the same level as the bottom 24 of the coke oven 11, and a top 31.

There is a transition section 32 associated with the coke guide 14;
This part is power operated and the oven's pack-steel (
The buckstays) 33 move toward the coke-side oven end 27 to prevent coke from falling out.

Otherwise, the coke would fall into the gap between the coke guide and the oven end during extrusion.

The height and width of the inside of the coke guiding machine is 25
The bulk coke 60 extruded from the oven chamber 25 easily passes through the coke guide while the coke is supported on the coke guide bottom 30.

Cooled freight car 16 is a one-spot open cooled freight car with a sloped bottom 34 and an open top 35, the top having a flat bar 36 extending around its periphery.

The wagons 16 are sized to accommodate the entire amount of coke extruded from one oven 11 while stationary.

The cooling wagon 16 is positioned in a suitable oven of the battery 10, and the cooling wagon locomotive 17 connects it to the cooling station 1.
Go back and forth until 9.

Referring to FIGS. 3 and 4, on the side of the cooled wagon track 18 furthest from the bench 12 is a collection main 20 which extends the entire length of the battery 10 and which connects the gas cleaning device 21 and the battery. It is connected to an induced draft fan 22 located at the end of the fan.

A plurality of ports 37 are disposed at the top of the main pipe, one facing each oven, and a valve 38 is coupled to each port.

The main collection pipe 20 is placed on a support 39 .

A third track 58 along the battery side of the collection main 20
extends, and this track is placed on a support 59 fixed to the main pipe 20.

In the embodiment of FIGS. 2 and 3, the hood 15 is supported on its battery side by a coke guide 14 to which it is fixed, and on its main collecting pipe side 49 by a third track 58.

As best shown in FIGS. 5 and 6, the hood 15 includes an upper portion 43 and a lower portion 44, the lower portion being open and having a flat bar 45 extending around the bottom thereof.

The circumferential dimensions of the hood lower portion 44 approximately correspond to the dimensions of the cooled freight car open top 35.

Battery side 46 of the hood adjacent to the coke side bench
There is a coke opening 47, which is aligned with the opening 56 of the coke guide 14 and has approximately the same dimensions.

Adjacent to the bottom of the coke opening 47 in the side 46 is an air opening 48 .

The main collection side 49 of the hood top 43 is provided with a flange outlet connection 50 at its top, opposite the air opening 48 on the battery side 46 of the hood 15 and located on the vertical centerline of the oven.

As shown in FIG. 3, a transition section 51 extends outwardly from the outlet connection 50 to form a dual duct assembly 40-40'.
connected to.

At the lower ends of the duct assemblies 40 and 40' there are pre-duct connections 41 and 41' and mouth valve actuation mechanisms 42 and 42'.

All of the components described above are standard equipment items and are well known to those skilled in the art.

Two specific embodiments of the above apparatus will now be described and are illustrated in FIGS. 2 and 6 and 3 and 5, respectively.

The embodiment shown in FIGS. 2 and 6 shows the ideal situation in which the peripheral top flat bar 36 of the refrigerated wagon is separated from the bottom flat bar 45 of the hood by a minimal air gap or space 52. .

Although small or minimal air gaps are desirable, it may be extremely difficult to obtain such air gaps in the hood lower portion 44 without a complex enclosing system.

A preferred embodiment of the apparatus for use in connection with the emissions control system of the present invention is shown in FIGS. 3 and 5.

In this system, a gap or space 52 exists between the peripheral top flat bar 36 of the cooled wagon and the peripheral flat bar 45 at the bottom of the hood.

The extent of this void or space is determined by the clearance deemed necessary to provide a continuous space path between the refrigerated wagon and the hood.

This gap is determined by a number of factors including, for example, maintenance of the linkage equipment, the degree to which the cooling freight car track 18, the coke guiding machine track 28, and the third track 58 supporting the hood are maintained relative to each other. It is determined.

The air gap 52 is 4 between the hood 15 and the cooling wagon 16.
This gap, which would need to be on the order of ~6 inches (10.2 to 15.2 inches) in size, should be filled with a closure plate that extends downward from the underside of the hood lower portion 44 and hangs across the gap 52. 53 and chain 54 (see FIG. 3).

The two embodiments differ in the location of the introduction of the revenue volume of air to ensure the capture of emissions, suppress leakage, reduce the temperature of the gas and provide volatile fuel air.

The embodiment shown in FIGS. 2 and 6 shows an open coke guide which allows control air to be admitted into the flue gas hood 15, with the air flowing between the top of the coke in the coke guide and the top of the coke guide. Measures approximately 3 square feet (0,
2877+") (see FIG. 5) and approximately 6 square feet located at a height approximately equal to the height of the bottom of the coke guide on the side of the flue gas hood adjacent to the coke oven. 0,56 m) second air opening 4
8.

In the embodiment of FIG. 2, there is substantially no void 52 at the smoke hood/coke storage car interface.

Another embodiment, shown in FIGS. 3 and 5, includes a smoke hood surrounding the coke guide 14 and at an interface between the smoke hood 15 and the coke storage car 16. , 6 to 1.5.2C!rL).

As shown in FIG. 5, control air is supplied to a first opening 56 of approximately 3 square feet between the top of the coke in the enclosed coke guide and the top of the coke guide, adjacent to the coke oven. a second opening 48 of approximately 6 square feet located on the battery side 46 of the hood 15 at a height approximately equal to the height of the bottom of the coke guide, and between the top of the wagon 16 and the bottom of the hood 15; It is introduced into the smoke hood 15 through a third opening or gap 52 of approximately 22 square feet (2.04 m).

During the testing phase of developing the invention, measurements of opacity values were made using a Ringelmann apparatus and are recorded in Tables 1 and 3-3d below.

As shown in the table, the present invention controls coke oven emissions during the coke oven extrusion cycle such that the opacity of the emissions does not exceed an opacity value of 40% as measured by a Ringelmann apparatus. provide a method to do so.

The table below records experimental data obtained using two types of equipment.

Specific Examples For hot coke extruded from a 6 meter oven having the dimensions described above during a normal coking cycle or each shorter cycle, the hot coke does not emit emissions with an opacity value greater than 40%. During extrusion and after completion of extrusion, approximately 3
240 over a period of 0 to 135 seconds, i.e. the dedusting period.
00 to approx. 83600 scfmd (approx. 6 under standard conditions)
It was found that a nominal exhaust gas flow rate of 79.7 to 2367.6 m'/min) was required.

Since the flow rate is a function of the amount of coke extruded from the oven, and the amount of coke is a function of its dimensions, the flow rate per ton of coke extruded is approximately 1000-3500 s.
cfmd (approximately 28.32 to 99.12 m' under standard conditions)
/min).

The dedusting period, ie the time for extracting emissions from the hot coke under the hood 15, is determined by the coking time.

Clean coke obtained during long coking times, ie longer than normal coking times, will not require dedusting.

However, for coke produced during normal or shorter coking times, approximately 30-13
A 5 second dedusting period is required.

The device of the present invention, resulting from a series of tests conducted on a 6 meter oven battery of the dimensions described above, has an average capacity of 23.5 tons of coke forced out of the oven in 35 seconds.

The test equipment was (1) a typical "low boy"
oy) An open one-spot coke storage wagon mounted on a J railway freight car, (2) a removable hood, (3) a transition duct with a water sprinkler hooked thereon, and (4) a 68-inch diameter (
(1.73m) sampling duct, and (5) an exhaust fan equipped with a variable damper device and a motor.

The fans used in these tests were Fuller F7 (
Model 17 manufactured by Fuller Fan
It was 3.

Fan is 60 below (15.6℃) and static pressure 63A inch w
,y) (16,5cmw,?) 150000a
Modified to give cfm (4248 m 1 min), 300
The belt was driven by an HP motor.

Table 1 shows the interface gap 52 between the freight car 16 and the hood 15.
is 3 inches (7,6CrrL) and 6 inches (15,
Observations of emissions generated when using the apparatus shown in FIG. 3, which includes a 30 foot (9.14 m) prototype open one-spot storage wagon 16 (2 crfL), are recorded.

Tables 3 to 3d show the emissions that occur when using a 22-foot (6.71 m) prototype open one-spot storage wagon with a minimum gap 52 between the wagon 16 and the hood 15, i.e., the device shown in FIG. It records the observed values of things.

The items used in Table 1 and Tables 3 to 3d are defined as follows.

coking time: elapsed time from charging to oven extrusion during which carbonization of the coal takes place; exhaust gas flow rate (acfm): measured at the conditions existing at the inlet of the exhaust fan, namely temperature, pressure and water vapor content 1 Gas flow rate per minute (cubic feet), exhaust gas flow rate (acfmd): standard conditions i.e. 70'F (21,1°C), water vapor 0%, mercury column pressure 29
．． Exhaust gas flow rate (cubic fee) per minute (acfm) corrected to 9'2 inches (760 h), gas temperature (
'F) : Temperature of exhaust gas measured at the inlet of the fan, time the freight car remains under the hood after completion of extrusion: Freight car 16
time (in seconds) that remains under the hood 15 after completion of extrusion, N and S: position of the observer who obtained the opacity values at positions 61 and 62, respectively, in Figure 4, coke at the end of the guide: coke Immediately before the coke falls into the storage wagon 16, Completion of extrusion: When the ram pushes all of the coke from the oven into the storage wagon 16. Freight cars under the cooling station: Just before cooling water spraying.

Emission observations were made by a visible emission observer certified by E, P, A to determine the opacity values shown in Tables 1 and 3-3d.

22 feet) (6,71m) accommodation wagon, that is, "closed (
In testing the "tight) system", visible emissions were observed by one observer.

This observer was located at "south observer position" 61 shown in Figure 4.

From this position, an observer recorded the visible emissions emanating from the open conic guide and hood during each extrusion test.

Observations began when coke appeared at the end of the coke guide.

Observers recorded visible emissions emanating from the coke guide and hood during extrusion and while the hood was removed from the wagon.

When the refrigerated freight car 16 begins to move to the cold palace, as shown in the illusion, the observer sees the east line of the refrigerated car track (50 feet) (15,
We followed the freight car along a parallel path at a distance of 24 m) and continued to observe it, recording visible emissions every 15 seconds.

The observation ended when the freight car came to a stop under the cold palace.

In the case of the 30 feet) (9,14 m) cargo car or "void system" test, observations were made by two certified observers.

One observer is first located at "south observer position" 61,
The other observer was located at ``northern observer position'' 62 in Figure 4.

The south observer followed the same procedure as for the 22-foot freight car test, with only the north observer observing and recording visible emissions emanating from the north side of the coke guide and hood during each extrusion test.

The times recorded in Tables 1 and 3-3d for the item "Time the wagon remains under the hood after completion of extrusion" do not include the time required to perform the extrusion.

The results of test numbers 1 to 22 by “closed system” are shown in 3rd to 3d.
Record in Table and Tables 4-4c.

Exhaust gas flow rate is 9900 standard cubic feet per minute dry (scfmd x 280.4771”/min under standard conditions)
minutes) to 83,600 standard cubic feet per minute dry (2367.6 m7 minutes under standard conditions) and coking times varied from 14 hours 27 minutes to 19 hours 45 minutes.

After the "closed system" tests were completed, the refrigerated wagon was extended to 30 feet and the hood was extended to the same length.

Test No. 1 conducted on this modified freight car, ie, “air gap system”
The results for ~5 are recorded in Tables 4 and 2.

For the “void system” test, the exhaust gas flow rate ranged from 62,500 standard cubic feet per minute (scfmd
50 standard cubic feet (2329.3 m3 under standard conditions)
7 minutes) and the coking time varied from 14 hours 30 minutes to 15 hours 8 minutes, respectively.

Test numbers 1 to 3 were conducted by reducing the interfacial gap (Fig. 3) between the smoke exhaust hood 15 and the cooling freight car 16 to approximately 3 inches (7.6 crIl).
).

Test 4 was conducted with a 6 inch (15.2 cm) gap and Test 5 was conducted with a surrounded 6 inch (15.2 CWL) gap.

From the test data shown in Tables 3-3d, opacity values of 40% or less indicate that exhaust gas flow rates of 24,000
scfmd (examination number io) to 83600 sc
fmd (test number 5) (679.7-2 under standard conditions
367.6 m3/min) and a residence time under the hood after completion of extrusion of 30 seconds to 135 seconds.

None of Tests 1-22 were outside this time range.

It was concluded that shorter than 30 seconds would result in unacceptable emissions and longer than 135 seconds would result in unnecessary loss of coke through combustion.

15 of the 22 tests are 24,000 to 836
00sefmd (679.7~236' under standard conditions
7.6 m3/min).

Three tests were outside this scope, and the remaining four tests18
~21 was not completed.

Of the 15 tests within the desired range, test 14.15
and 17 recorded opacity values greater than 40%.

This is caused by coke remaining in the guide after extrusion or by raw coke on top of the coke load in moving freight cars.

The range of gas temperatures measured at the fan inlet is below 132 (5
6°C) (Test No. 5) to 600'F (316°C) (Test No. 3).

These temperatures were regulated with gas cooling water and are considered well within safe operating ranges.

High gas temperatures, ie above about 800°C (427°C) or below, will damage the equipment, especially the fan.

Referring to the test data in Table 1, it is noted that opacity values of 40% or less were obtained in Tests 1-5 for all observations except Test 4.

The unacceptable opacity value recorded in test 4 was
This is due to the fact that emissions from the 6 inch (15,2 CrfL) gap between the hood and the wagon cannot be controlled without the higher flow rate provided by the fan.

The exhaust gas flow rate must increase as the gap between the flue gas hood and the wagon increases, so that depressurization is maintained within the hood.

The relief must be sufficiently large to overcome the temporary gas blow-offs or spurts of coke extrusion.

If depressurization is insufficient, emissions to the atmosphere will occur through voids or other open areas.

Therefore, the 6 inch (1 inch) used in test number 4
5.2) The gap was surrounded in test number 5 to reduce the gap size.

The enclosure formed a barrier to minimize air flow and therefore an acceptable opacity value was obtained for test number 5.

Tests 1 to 5, i.e. Table 1, are all 24000 to 83
Desired exhaust gas flow rate (scfmd) of 600 (679.7 to 2367.6771”/min under standard conditions)
and within the time the wagon remained under the hood after completion of extrusion of 30 to 135 seconds.

The fan duct temperature is 155-170 below (683-77℃), which is well within the operating range in the tests in Tables 3-3d.
It was within the range of

Referring to Tables 4 to 4c and Table 2, for the tests conducted, the exhaust gas flow rate below which there would be a significant concentration of flammable gas in the exhaust gas is 240,005 cf.
rnd (679.7 m3/min under standard conditions).

This value was determined by exhaust gas analysis for combustible components, namely carbon monoxide (CO), hydrogen (H2), and oxygen (02).

Although all tests showed some excess of 02, test numbers 11 and 22, Tables 4b and 4c, showed significant concentrations of CO and H2, respectively, 1.0
It showed concentrations higher than 0% CO or 0.5% H2.

Test numbers 11 and 22 are 24000 scfmd
(679.7r11'/min under standard conditions), for example, test number 11 has a lower gas flow rate of 16200
scfmd (458.8 rrl 1 minute under standard conditions) and test number 22 is 22 s 70 scfmd
(647.7 rIl'/min under standard conditions).

Test number 3 in Table 4 with similar coking conditions is 3
1700 scfmd (897.7 m under standard conditions
37 minutes) showed no significant H2 or CO.

Therefore, 24000scfmd (under standard conditions 6
79.7 m/min) was identified as the critical (minimum) exhaust gas flow rate.

For good control of emissions generated during coke oven extrusion, the control air capacity must be sufficient for:

(a) combustion of volatiles and other combustible substances released from the coke; (b) ensuring that the products of incomplete combustion are at a concentration below the explosive limit; and (C)
to prevent overheating of the equipment; and (d) to accommodate the gas undulations or blowouts that occur as the coke is crushed and falls into the wagons.

As a result, the cooling freight cars are heated to an opacity level of 40.
It can be moved from the oven to the cold room without emitting more than % of emissions.

Referring to Test Plane 6.7.13.15.16 and observed values and considering on-site take, approximately 52,000 scfmd (under standard conditions), 4.72.6 m3 to control emissions in a closed system. /min) was concluded to be required.

Since fans are not rated by scfmd, but rather by acf m, which is often saturated with water at a constant temperature, it was necessary to measure what the saturation temperature was.

Early in the study it was concluded that trial number 6 appeared to show good control.

The only control over saturation temperature is to adjust the inlet fan damper and adjust the gas cooling water to provide a gas saturated with water vapor.

It was concluded that fan damper setting &7 gave the best adjustment.

Tests 7.13.15 and 16 were conducted at damper setting 7 and the average saturated gas temperature for these tests was below 150°C (66°C
), and the average flow rate is 52000 scfmd
(1472.6 m°/min under standard conditions).

In the gap test, the maximum fan capacity of 1l1000
3 inch (7,6 crrL) gap or envelope 6 inch (15,2 crrL) at 0 scf (3115,2 m'/min)
(X) Good control of emissions was observed with the gap.

The temperature is on average 1551: (68,3 °C) and therefore (1925,8 m/min under standard conditions), where 530 - Rankine degrees (70 below standard + 460), 615 -
Rankine degree (155 lower + 460), 0.715 = 155
cubic feet of dry gas per cubic foot of saturated gas.

Therefore, the optimal exhaust gas flow rate is 52,000 scfmd (147 scfmd under standard conditions) for the "closed system" in Figure 2.
2.6 m1 min) or 68,000 acfmcl for the "void system" in Figure 3.

During all these tests, 23.5 tons of coke was extruded from each oven in 35 seconds.

Therefore, the pumping speed per ton of coke during extrusion is as follows.

(62.3 m"/min/T under standard conditions) (82°1..3/min/T under standard conditions) 23.5) of coke was extruded in 35 seconds, so 1 coke was extruded every minute. The gas flow rate per ton is:

(36.8771"7 minutes under standard conditions) (4 s, i m"7 minutes under standard conditions) Similar calculations were applied to the "closed system" in Figure 2 and the "void system" in Figure 3 above. 240003cf md to 83600 scfmd (679.7 under standard conditions)
~2367.6 m”7 minutes)
For convenience, exhaust gas flow rates (scfmd) are shown in Table 5 below.

Although the method of carrying out the invention has been described with respect to an open one-spot cooling freight car, it should be understood that the invention may be practiced with other forms of apparatus.

For example, FIGS. 7 and 9 show a one-spot cooled freight car 116 having a lower portion 117 and an upper or cover portion 118.

There is an opening 1 near the center of the lower part 117 on the battery side at a height directly below the bottom of the coke guiding machine, as described later.
There are 48.

The wagon top 118 has a side plate 119 adjacent to the battery, closed ends 120 and 121, a closed top 122, and sides 12.
3, and this side portion 123 is present on the side of the freight car opposite to the side portion 119.

The side 119 has a large opening 124 through which the hot coke is forced into the cooling wagon and through which water is sprayed at the cold station to cool the hot coke.

The side 123 includes a duct connection 151 near its center and top.

The connection 151 connects to a gas exhaust cleaning system (not shown), including a duct section, a collection main, a gas cleaning system and a fan, which, as is well known to those skilled in the art, is associated with the open one-spot cooling wagon described above. It is similar to the device described above.

The cooling freight car 116 operates in conjunction with the coke guiding machine 14',
The coke guide is supported on a coke guide car 29' and has a bottom, a top, a transition section and an opening 47' (
(see FIG. 7) in the same way as the coke guiding machine described above.

At the end of the coke guide 14' remote from the oven there are vanes 145 and 146, which
1 extending vertically outwardly from the guide machine parallel to the coke side end of the guide.

The vanes 145 and 146 are in such a way that they extend beyond the ends 120 and 121 and above the top 122 of the upper portion 117 of the cooled wagon 116.

When the coke-cooled wagon 116 accommodates the hot coke discharged from the oven in alignment with the coke guide 14', the vanes 145 and 146 are spaced from the top 118 of the coke-cooled wagon 116 with the minimum allowable clearance. Spaced a short distance from side 119.

To carry out the method of the present invention using one-spot cooling wagon 116, duct connection 151 is aligned with a gas exhaust cleaning device (not shown but similar to that shown in FIGS. 1-4 and described above). Position the freight car.

The center of the opening 124 in the upper part 118 of the cooled wagon 116 is aligned with the opening 47' of the coke guide 14'.

The coke guide opening 47' is aligned with the oven 11 from which the door has been previously removed to allow the coke mass 60 to be discharged from the oven.

The coke guide transition section 32' is located opposite the coke side oven end 27.

The gas exhaust cleaning device is energized to begin ejecting the coke mass 60 from the oven chamber 25.

Movement of a pusher ram (not shown) forces coke mass 60 from chamber 25 through coke guide transition section 32' and coke guide 14'.

At the end of the guide 14' furthest from the oven end 27, the coke is no longer held by the guide bottom 30' and breaks up and falls through the opening 124 in the top 118 into the bottom 117 of the cooling wagon 116. and oven chamber 2
The entire coke mass from 5 is deposited in wagon 116.

While forcing the coke out of the oven chamber 25, the gas exhaust cleaning device admits air through:

That is, (a) the top of the coke lump 60 and the oven top 2
chamber passageway 5 at the top of chamber 25 between 6 and 6;
5 and into the upper part 118 of the cooling wagon 116 through a connecting guide passage 56' in the top of the coke guide 14' between the coke mass 60 and the coke guide top 31';
(b) through the air gap existing between the vanes 145-146 and the upper side plate 118; and (e) into the upper part 118 through the openings 148 in the lower part 117 of the cooling wagon 116.

The air introduced into the upper part 118 mixes with the deworming emissions of the coke discharge into the cooling wagon 116, and this air and emissions are passed from the upper part 118 via a connection 151 into a gas discharge-cleaning system. is exhausted.

The evacuation of air and emissions continues until the extrusion is completed and during the dedusting period following completion of the extrusion.

After that, the freight car 116 loaded with hot coke was transported to the cold palace 19.
During this time, the hot coke is transferred to the coke wagon 116.
is exposed to the atmosphere through openings 124 and 151 in the upper part 118 and opening 148 in the lower part 117.

While the refrigerated wagon 116 travels to the cold palace, the emissions released from the hot coke have an opacity of less than 40%.

In addition to the alternative apparatus shown in FIGS. 7 and 8 that may be used in the practice of the invention, the invention also uses a "mobile" system similar to that shown in FIGS. 9 and 10. This can be done and is well known to those skilled in the art.

Briefly, the system consists of a coke guiding machine 214, a coke cooling freight car 216 and a gas discharge cleaning car 217 operating in series.

The coke guiding machine 214 is equipped with a hood 215 that can move forward and backward and runs on a track 218, and this track is connected to a plurality of ovens 2
21 extends along the length of the coke side bench 219 of the coke oven battery 220.

The coke-cooled wagon 216 includes a top cover 222 that has an opening 223 through which coke is dropped into the wagon 216.
and an opening 224 through which air and emissions exit the freight car 216.

The opening 223 is adjacent to the coke side bench 219, while the opening 224 is adjacent to the top cover 2 opposite the opening 223.
It exists on the side of 22.

Both openings 223 and 224 are located near the center of cover 222.

Coke cooled wagon 216 has a side 225 closest to battery 220 with an air opening 226 near its center and top through which air is admitted into wagon 216 .

The gas discharge and cleaning vehicle 217 includes a gas discharge and cleaning device 227 and a driver's cab 228 .

The duct l-229 is connected at one end to the opening 224 in the top cover 222 of the freight car 216 and at the other end to the gas discharge and purification device 227 of the cleaning car 217.

Coke cooling wagons 216 and gas discharge-cleaning wagons 217 operating in series operate on ground level tracks 230 leading to a cooling station (not shown).

To carry out the method of the invention using the "mobile" system described above, the coke guide 214 is aligned with the oven 221 from which the coke is extruded, and the coke cooling wagon 216 is moved along the coke guide 214.

The hood 215, which can move forward and backward, is lowered onto the opening 223 in the slope 222' of the top cover 222 of the cooling freight car 216.

The gas evacuation-cleaning device 227 is energized and air is blanketed through the coke guide 214, retractable hood 215, and air openings 226 in the coke cooling wagon side 225 and any spaces existing between the devices. It is taken into the coke cooling wagon 216.

Air is supplied via duct 229 and gas discharge-cleaning device 22
7 from the coke cooling wagon 216 to the atmosphere.

During the discharge of coke from the oven 221 and during the subsequent dedusting period, the gas exhaust-cleaning device 22γ is operated to draw air into the freight car 216 where it is transferred to the freight car 21.
6. Discharge of hot coke into the soil removal mix with the discharge.

Air and emissions are removed from the freight car 216 and opened at the opening 22.
4 and the duct 229, the waste discharge-cleaning device 22
7 and then exhausted to the atmosphere.

When the extrusion and dust removal period are completed, the movable hood 215 of the coke guiding machine is raised, and the coke cooling freight car 216 and the gas discharge/cleaning car 217, which are operated in series, are placed on the track 23.
0 to the cooling station.

During the movement of the freight cars, the hot coke in the freight cars 216 is exposed to the atmosphere through openings 223 in the ramps 222' of the tops 222 of the cooling cars 216 and air openings 226 in the sides 225 of the cooling cars 216. Ru.

For various reasons, it is desirable to maintain the gas exhaust-cleaning device 227 of the gas exhaust-cleaning car 217 in operation while the cooling wagon 216 and the gas exhaust-cleaning car 217 move in tandem to the cooling station.

Under such circumstances, if a "movable" system is used when the dedusting period is finished, the cooling freight car 21 on its way to the cooling station can be
6 either ceases or the net gas flow from the freight cars to the atmosphere decreases to such a rate that the visible emissions released from the hot coke during that journey are less than 40% opaque. can.

"Net gas flow" means a gas moving device (e.g. a fan installed to control emissions from a hot coke mass);
means a state in which the rate of gas discharge from a freight car, expressed in volume per unit time, is lower than the rate of gas generation, expressed in volume per unit time, generated from a lump of hot coke.

Therefore, there is a flow of gas from the freight cars to the atmosphere.

Although various forms of apparatus have been described and illustrated in which certain embodiments of the invention may be practiced, it is to be understood that the invention is capable of other forms of apparatus and modifications without departing from its spirit and scope. It is obvious to the business operators.

[Brief explanation of the drawing]

1 is a front view of the apparatus for carrying out the method of the invention; FIG. 2 is a front view of the apparatus for carrying out the method of the invention; FIG. 1 is a side view of the device of FIG. 1; FIG. 3 is a side view similar to FIG. 2 showing another form of device suitable for use in the present invention; FIG.
Figure 5 is a schematic plan view of a coke oven battery and associated equipment suitable for use in the present invention; Figure 5 is an isometric diagram of equipment similar to Figure 3, including a cutaway section of the coke guide and hood; , FIG. 6 is an isometric schematic diagram of a device similar to FIG. 2 including a cut-away portion of the coke guide and hood, and FIG. 7 is a second view of another form of the device in which the invention may be practiced 8 is a schematic isometric illustration of the apparatus of FIG. 7; FIG. 9 is a block diagram showing yet another form of apparatus in which the invention may be practiced; and FIG. FIG. 1 is a sectional view taken along the line 1o-io. 10...Coke oven battery, 11...
...Oven, 12...°°°Coke side bench, 1
3...Door device, 14----Coke guiding machine, 15----Hood, 16----Cooled freight car, 17---Locomotive, 18... Orbit, 19... Refrigerated palace, 20... Main collection pipe, 21... Gas purifier, 22... Fan, 23 ... Filling hole, 24 ... Floor section, 25 ... - Oven chamber, 26 ... ... -
Furnace top, 27... Coke side end, 28...
... ° Coke guide machine track, 29 ... - Coke guide wheel, 30 ... Coke guide machine bottom, 31.
-...Top of guide machine, 32...--Coke guide machine transition part, 33...--Backstay, 34...
-...Slanted bottom, 35...Open top, 36.
...Top flat bar, 37...Main pipe port, 38...Valve, 39...Support, 40
...Duct assembly, 41...Duct connector, 42...Valve mechanism, 43...
... Upper part of the hood, 44 ... Lower part of the hood, 45
...Flat bar at the bottom of the hood, 46...-Battery side, 47...-Opening, 48...-...
-Second air opening, 49...Main pipe side, 50,5
1... Connection duct, 52... Third opening (gap), 53... Closing plate, 54...
・Chain, 55...Aisle, 56...
First opening (passage), 57... Freight car gate, 5
8...-Orbit, 59...-Support, 60.
--- Coke mass, 61, 62 --- Measurement position, 116 --- Cooled freight car, 111 ---
Lower part, 118...Cover, 119...°°
Side plate, 120, 121...Closed end, 122.
-...Closed top, 123...Side part, 124
......opening, 145,146...blade, 148...opening, 151...duct connection, 214...coke Guide machine, 215
...Moveable hood, 216...Cooled freight car, 217-...Gas exhaust-clean car, 218.
−・・・Trajectory, 219・・・−・Coke side hench,
220...-Coke oven battery, 221-...
...Ohhh, 222...Top cover, 2
23゜224...opening, 225...
Side part, 226...Air opening, 227...
・・Gas exhaust-purifying device, 228 ・・・Driver’s cab,
229...Duct, 230...Orbit.

Claims (1)

[Scope of Claims] 1. A coke oven is connected to a one-spot coke-cooled freight car by means of a coke guiding machine, and an end of the coke guiding machine and the coke-cooled freight car are substantially in sealing engagement through an intermediate part of a smoke exhaust hood. Approximately 1000 to 3500 scfmd per ton of coke is operably connected to the bottom and extruded into the freight cars.
removing at least coke-emitted gas while extruding the coke at a gas flow rate of (about 28.32 to 99.12 m/min under standard conditions); and removing the gas and passing it through a gas cleaning device. Upon completion of the cooling process, the freight car is moved to a cooling station and the hot coke in the freight car is reported to the atmosphere, and the gas is removed or not removed from the hot coke while the freight car is being moved to the cooling station. A method for controlling coke oven emissions during extrusion of hot coke from a coke oven comprising: reducing the coke emissions to an opacity of 40% or less. 2. The coke oven according to claim 1, wherein the smoke exhaust hood is provided surrounding the coke guiding machine, further extends over the entire top of the freight car, and has a length substantially equal to the length of the freight car. How to control emissions. 3. Controlling coke oven emissions as claimed in claim 1 or 2, wherein the gas is removed approximately 30 to 135 seconds after completion of extrusion of the hot coke from the coke oven to the cooling wagon. Method. 4. A method for controlling coke oven emissions according to any one of claims 1 to 3, wherein the coke oven has a capacity of about 6 m or less. 5. In the gas removal process, the height of the first opening between the top of the coke guide and the top of the coke guide and the side of the flue gas hood adjacent to the coke oven is approximately the height of the bottom of the coke guide. the second existing at the same height
5. A method for controlling coke oven emissions as claimed in any one of claims 2 to 4, characterized in that air is drawn into the fume hood through the openings. 6 The first opening is approximately 3 square feet 1-(0,28 square m
) and the second opening is 6 square feet (0.56 square meters). 7. The method according to claim 5 or 6, characterized in that air is drawn into the smoke exhaust hood through a third opening between the top of the freight car and the bottom of the smoke exhaust hood. A method of controlling coke oven emissions. 8. The method of claim 7, wherein the third opening is approximately 22 square feet.