KR20190143684A - Apparatus for controlling pressure of gas in coke oven - Google Patents

Abstract

A coke oven gas processing apparatus, according to the present invention, comprises: a plurality of lift pipes for transferring gas generated in each carbonization chamber to a collection pipe; and a buffer connecting pipe for connecting the plurality of lift pipes to each other and temporarily collecting and storing gas.

Description

Coke oven gas processing device {APPARATUS FOR CONTROLLING PRESSURE OF GAS IN COKE OVEN}

The present invention relates to a coke oven gas treatment device.

Generally, a coke process is a process of producing coke by charging coal and distilling it into the carbonization chamber of a coke oven.

In the coke process, the coke oven gas is generated from the time of charging the coal to completion of coal drying.

The coke oven gas is collected in the gas collecting pipe via a riser connected to the carbonization chamber, and the coke oven gas collected in the gas collecting pipe is transferred to the chemical plant via a hydraulic press and then used again in a subsequent process.

The gas generated during coke distillation is the most at the beginning of distillation, and as the distillation proceeds, the amount decreases so that almost no gas is generated immediately before extrusion.

In order to collect these gases, the gas collecting tube is maintained at a constant pressure.

However, since the pressure in the gas collecting tube is kept constant during the dry distillation period, there is a limit in collecting the gas generated in the initial stage of dry distillation, so that the gas is dissipated to the outside.

Accordingly, the collection efficiency of the coke oven gas is lowered, and problems such as deterioration of equipment due to high temperature gas, adhesion of tar, etc. contained in the gas, and air pollution are generated.

In addition, when there is almost no gas at the end of dry distillation, the suction force of the gas collection pipe is high, so that the pressure in the carbonization chamber is made into negative pressure, which causes problems such as equipment deformation due to coke oxidation and heat generated during coke oxidation. .

In order to solve this problem, an apparatus for controlling the pressure of the gas collection pipe by measuring the generated gas pressure has been developed.

However, due to the nature of the coke oven, the number of measuring instruments for measuring the riser pipes having the same number as the carbonization chamber is increased in a large scale, thus increasing the investment of equipment, and the measuring devices installed at high temperature and high dust locations frequently operate abnormally. It was not used well.

The present invention is to provide a coke oven gas treatment apparatus that can effectively treat the gas in the gas collection pipe maintained at a constant pressure by minimizing the gas pressure deviation due to the difference in the amount of gas generated immediately after the charge and the end of the charge in each carbonization chamber.

An apparatus for treating coke oven gas according to one embodiment of the present invention is an apparatus for treating coke oven gas generated in each of a plurality of carbonization chambers.

The coke oven gas processing apparatus may include a plurality of riser pipes installed in multiple stages at each end of each carbonization chamber to transfer gas generated in the carbonization chamber to a gas collection tube.

In addition, the coke oven gas treating apparatus may include a buffer connecting pipe for connecting the plurality of rising pipes to each other and temporarily collecting and storing the gas before transferring the gas to the gas collecting pipe.

The buffer connector may be sealably connected to the riser by a connection part.

At the end of the buffer connecting pipe may be a lead for discharging the gas when the gas more than the amount of the gas collection pipe is introduced.

The inner surface of the buffer connector may be made of refractory to maintain the temperature of the gas in the buffer connector.

The riser may be an opening and closing unit for opening and closing the riser.

The plurality of risers may be composed of unit groups grouped by at least two riser unit sizes.

The buffer connector may be provided with a pressure gauge capable of measuring the gas pressure in the buffer connector.

One or both ends of the buffer connector may be provided with a preliminary buffer connector for connecting the buffer connector and the neighboring buffer connector to each other.

The buffer connector may be provided with a sensible heat recovery device for recovering the sensible heat of the gas in the buffer connector.

According to the embodiment of the present invention, it is possible to minimize the variation in the gas pressure generated during the coke dry distillation.

Therefore, even if the pressure of the collecting pipe is not measured and controlled separately, equipment deterioration due to high temperature gas due to gas dissipation or air intake to the outside, adhesion of tar, etc. contained in the gas, air pollution, deterioration of coke quality and coke oven It is possible to prevent the problem that the facility performance is degraded.

In addition, it is possible to effectively control the gas pressure without installing an instrument that is vulnerable to high temperature and high dust locations and to invest in equipment for pressure control in each riser, thereby reducing equipment investment costs and preventing downtime due to equipment troubles. .

1 is a schematic configuration diagram of a treatment facility to which a coke oven gas treatment device is applied according to an embodiment of the present invention.
2 is a schematic configuration diagram of a coke oven gas treatment device according to an embodiment of the present invention.
3 is a schematic configuration diagram of a coke oven gas treating apparatus according to an embodiment of the present invention, which shows a state during daily operation in which an opening and closing unit is opened.
4 is a schematic configuration diagram of a coke oven gas treating apparatus according to an embodiment of the present invention, in which one open / close unit is temporarily closed before charging the raw coal.
FIG. 5 is a partial perspective view illustrating a connection state of a buffer tube of a coke oven gas treatment device according to an embodiment of the present invention.
6 is a view illustrating some components for explaining an open / close state of an opening and closing unit in a coke oven gas treating apparatus according to an embodiment of the present invention.

Hereinafter, exemplary embodiments of the present invention will be described with reference to the accompanying drawings so that those skilled in the art may easily implement the present invention. As those skilled in the art can easily understand, the embodiments described below may be modified in various forms without departing from the concept and scope of the present invention. Where possible, the same or similar parts are represented using the same reference numerals in the drawings.

The terminology used below is merely to refer to specific embodiments, and is not intended to limit the present invention. As used herein, the singular forms “a,” “an,” and “the” include plural forms as well, unless the phrases clearly indicate the opposite. As used herein, the meaning of “comprising” embodies a particular characteristic, region, integer, step, operation, element and / or component, and other specific characteristics, region, integer, step, operation, element, component and / or group. It does not exclude the presence or addition of.

All terms including technical terms and scientific terms used below have the same meaning as those commonly understood by those skilled in the art. Terms defined in advance are additionally interpreted to have a meaning consistent with the related technical literature and the presently disclosed contents, and are not interpreted in an ideal or very formal sense unless defined.

1 is a schematic configuration diagram of a treatment facility to which a coke oven gas treatment device is applied according to an embodiment of the present invention, and FIG. 2 is a schematic configuration diagram of a coke oven gas treatment device according to an embodiment of the present invention. .

3 is a schematic configuration diagram of a coke oven gas treating apparatus according to an embodiment of the present invention, which shows a state during daily operation in which an opening and closing unit is opened.

4 is a schematic configuration diagram of a coke oven gas treating apparatus according to an embodiment of the present invention, in which one open / close unit is temporarily closed before charging the raw coal.

FIG. 5 is a partial perspective view illustrating a connection state of a buffer tube of a coke oven gas treatment device according to an embodiment of the present invention.

1 to 5, the coke oven gas treating apparatus according to an embodiment of the present invention is a device for minimizing a gas pressure variation due to a difference in gas generation amount immediately after charging raw carbon into each carbonization chamber and at the end of charging.

In the coke oven body 10, a plurality of carbonization chambers 20 may be provided that form an internal space such that coal may be charged, for example, as raw coal.

Each of the carbonization chambers 20 may be connected to a plurality of rising pipes 30 for transferring the coke oven gas generated from the time of charging the coal to completion of dry distillation in the carbonization chamber 20 to the gas collection pipe 40. .

The riser 30 may be installed in multiple stages for effective gas transfer. 2 to 4 illustrate the case of installing in three stages, of course, it can be installed in three or more stages or less than three stages.

The coke oven gas generated in the carbonization chamber 20 may be collected in the gas collecting pipe 40 through the rising pipe 30.

The coke oven gas treatment device connects the plurality of risers 30 to each other and transfers the gas from each riser 30 to the gas collecting tube 40 so as to buffer the gas pressure transferred from each riser 30. It may include a buffer connector 100 for temporarily collecting and storing before.

As shown in FIGS. 2 to 4, the buffer connection pipe 100 may be connected in communication with the upper end of the riser 30, but may be connected in communication with the lower end of the riser 30.

In addition, the upper end of the buffer connection pipe 100 has a lead for discharging the gas to the outside in case of emergency, that is, when more than the amount of gas that can be collected by the gas collection pipe 40 flows into the buffer connection pipe 100 ( 110 may be installed.

One end of the buffer connecting pipe 100 may be connected to the gas collecting pipe 40 to provide a passage for transferring gas from each of the rising pipes 30 to the gas collecting pipe 40.

The other end of the buffer connection pipe 100 may be connected to the one end of each of the unit group lift pipe 30 by the connection portion 200 to be sealed.

In addition, the other end of the buffer connecting pipe 100 may be connected to the gas collecting pipe 40.

The buffer connection pipe 100 may be made of the same material as the material of the rising pipe 30 for smooth gas transfer.

In addition, the inner surface of the buffer connector 100 may be made of refractory or the like to keep the temperature of the gas in the buffer connector 100 at a predetermined temperature.

The buffer connector 100 may additionally be installed with a sensible heat recovery device (not shown) for recovering the sensible heat of the gas in the buffer connector 100.

The riser 30 may be provided with an opening / closing unit 300 that may seal or open the riser 30.

The opening / closing unit 300 may be installed in the uppermost rising pipe 30 of the rising pipe 30 installed in multiple stages for effective opening and closing of the rising pipe 30.

The opening / closing unit 300 may seal the riser 30 to block gas inflow in the carbonization chamber 20 when the coal is charged.

In addition, the opening and closing unit 300 may open the riser 30 in order to discharge the gas in the riser 30 to the buffer connection pipe 100 during daily operation, that is, when the coal is dried after coal charging.

When the opening and closing unit 300 is located in a plane perpendicular to the longitudinal direction of the riser 30 by an operation unit (not shown) as shown in FIG. 2, the opener unit 300 closes the riser 30.

In addition, as shown in FIG. 3, the opening / closing unit 300 rotates by 90 degrees by an operation unit (not shown) to open the raising pipe 30 when positioned on the inner side of the rising pipe 30.

The plurality of lift pipes 30 may be formed of a unit group grouping at least two or more lift pipes 30 on a unit scale.

In FIGS. 2 to 4, the five risers 30 are configured as one unit group, and the unit groups are connected to one buffer connector 100, but the number of risers 30 in the unit group is required. Can be adjusted accordingly.

In addition, the buffer connector 100 may be provided with a pressure gauge 120 that can measure the gas pressure in the buffer connector (100).

The gas pressure measured by the pressure gauge 120 may control the gas pressure of the gas collection pipe 40 by a controller (not shown).

One or both ends of the buffer connector 100 connect the buffer connector 100 and the neighboring buffer connector 100 to each other, and additionally buffer the gas pressure when the gas pressure buffering force of the buffer connector 100 is exceeded. Spare buffer connector 130 may be connected.

The preliminary buffer connector 130 may be installed at one or both ends of the buffer connector 100 for effective buffering of the gas pressure, and may be connected to the central portion of the buffer connector 100.

The preliminary buffer connector 130 connects the plurality of buffer connectors 100 to each other, and buffers the gas pressure in multiple stages of the buffer connector 130.

In addition, when there are a plurality of preliminary buffer connectors 130, the preliminary buffer connectors 130 and the neighboring prebuffer connectors 130 may be connected in the same manner as the preliminary buffer connectors 130.

The preliminary buffer connector 130 may be installed at one or both ends of the buffer connector 100 and may be connected to the central portion of the buffer connector 100.

1 to 5, the operation of the coke oven gas treating apparatus according to an embodiment of the present invention will be described.

Coal is charged as raw coal in the plurality of carbonization chambers 20, and coke oven gas is generated in the carbonization chamber 20 by charging coal.

The coke oven gas generated in the carbonization chamber 20 is collected in the gas collecting tube 40 after passing through the rising pipe 30 installed above the carbonization chamber 20.

In the case of a general coke oven, charging is carried out at intervals of, for example, five carbonization chambers 20. For example, when charging is completed in the first carbonization chamber 20, the next charging is performed in the carbonization chamber 20. Will be done.

At this time, in the case of the carbonization chamber 20 of the second to fifth times, dry coal of the previously charged coal is in progress.

In addition, the coal charged in the carbonization chamber 20 starts to be heated to release the coke oven gas, the coke oven gas begins to occur in the initial mass of coal charging, and gradually decreases after the drying time exceeds a certain period. .

On the other hand, in the prior art, because the coke oven gas generated in a single carbonization chamber passes only to the corresponding riser, the gas is dissipated into the atmosphere due to insufficient capacity of the riser or insufficient suction force in the main assembly.

However, in the case of the present invention, the unit group lift pipes 30 of constant scale are connected to each other by the buffer connection pipe 100.

The buffer connecting pipe 100 is provided between the rising pipe 30 and the gas collecting pipe 40, and further includes a unit group rising pipe 30 in which a plurality of the rising pipes 30 are grouped into at least two or more unit sizes. Are connected to each other.

That is, since the buffer connection pipe 100 connects the unit group lift pipes 30 (for example, five lift pipes) to each other, the gas transferred from each lift pipe 30 of the unit group to the gas collection pipe 40. Temporarily gather and store before transport.

Accordingly, since the gas pressure transferred from each riser 30 of the unit group may be temporarily buffered by the buffer connecting tube 100, the variation in the gas pressure generated in each carbonization chamber 20 may be minimized. have.

Therefore, the gas treatment scale that can be processed in the carbonization chamber 20 and each of the risers 30 is increased by the buffer connection pipe 100, so that there is no amount of gas discharged into the atmosphere.

For example, since the charging operation is performed at intervals of five carbonization chambers 20, the amount of gas generated in the first carbonization chamber 20 where charging is performed among the five carbonization chambers is adjacent to the second to fifth carbonization chambers 20. It occurs relatively small compared to the case.

As a result, the gas treatment capacity of each of the rising pipes 30 connected to the second to fifth carbonization chambers 20 adjacent to the first carbonization chamber 20 may be reduced. Increased treatment capacity.

That is, the gas treatment capacity of each of the uptake pipes 30 connected to the second to fifth carbonization chambers 20 is more relaxed than the processing capacity of the upcoming pipe 30 connected to the first carbonation chamber 20.

Therefore, since the unit group lift pipes 30 are connected to each other by the buffer connection pipe 100, carbonization of the gas treatment capacity of the lift pipe 30 connected to the first carbonization chamber 20 is carbonized 2 to 5 times. The gas treatment capacity of the riser 30 connected to the seal 20 can be supplemented.

Accordingly, each gas pressure transferred from the first to fifth carbonization chambers 20 through each of the rising pipes 30 may be buffered with each other while temporarily gathering in the buffer connecting pipe 100.

That is, the unit group lift pipes 30 are connected to each other by the buffer connection pipe 100 so that the gas transferred from each carbonization chamber 20 to each lift pipe 30 is buffered with each other in the buffer connection pipe 100. Therefore, the gas pressure variation between each riser 30 can be minimized.

Therefore, since the amount of gas that can be processed in each carbonization chamber 20 is increased, the coke oven gas generated in the carbonization chamber 20 can be processed more efficiently.

In addition, when the coal is charged into the raw coal, the charging openings existing in the upper part of the carbonization chamber 20 are opened to charge the coal. At this time, if the coke oven gas is present in the carbonization chamber 20, there is a possibility of reaction or a flame.

For this reason, as shown in FIG. 2 using the opening-closing unit 300, the rising pipe 30 connected to the carbonization chamber 20 before coal charging can be sealed.

In addition, after sealing the carbonization chamber 20 immediately before charging the coal and charging the coal, when coke oven gas is generated, as illustrated in FIG. 3, the opening and closing unit 300 may be opened to perform a routine gas treatment operation. have.

In addition, when the lead 110 is installed in the upper portion of the buffer connection pipe 100 in an emergency, that is, more than the amount of gas that can be collected by the gas collection pipe 40 flows into the buffer connection pipe 100. Dissipation,

In addition, as shown in FIG. 5, the buffer connector 100 and the adjacent buffer connector 100 may be connected to each other by the preliminary buffer connector 130.

As such, when the gas is transferred in excess of the gas pressure buffering force of the buffer connector 100 by connecting the buffer connector 100 in a multi-stage structure by the preliminary buffer connector 130, the preliminary buffer connector 130 is provided. By this, the gas pressure can be temporarily buffered.

FIG. 6 is a view illustrating some components for explaining an open / close state of an open / close unit in a coke oven gas treatment device according to an embodiment of the present disclosure.

Referring to FIG. 6, the opening / closing unit 300 may be installed in the central stage riser 30 of the riser 30 installed in multiple stages for effective opening and closing of the riser 30.

Opening and closing unit 300 is installed inside the rising pipe 30 is coupled to the opening and closing plate 310, the opening and closing plate 310 for sealing the rising pipe 30 to rotate the opening and closing plate 310 to open and close. It may include a rotating shaft 320 for.

In addition, the opening and closing unit 300 may be installed at one end of the rotating shaft 320 may include an adjusting unit 330 for automatically adjusting the rotation angle of the rotating shaft 320.

The shape and size of the opening and closing plate 310 may be formed in the same diameter and shape as the inner cross-section of the riser to easily seal the riser (30).

In addition, the rotary shaft 210 is coupled to the opening and closing plate 310, one end of the rotary shaft 320 may protrude to the outside of the riser 30 to extend the rotation angle of the rotary shaft 320.

The adjusting unit 330 may be configured to automatically open and close the riser 30 by the opening and closing plate 310 in association with the operation sequence.

In addition, the closing unit 300 may be installed in the middle of the riser 30 of the central stage of the riser pipe 30 is installed in multiple stages, in order to effectively open and close the riser (30).

When the opening and closing plate 310 is located in a plane perpendicular to the longitudinal direction of the riser 30 by the control unit 330 to close the riser 30.

 On the contrary, as shown in FIG. 6, when the opening and closing plate 310 is positioned in the longitudinal direction of the riser 30 by the adjusting unit 330, the riser 30 is opened.

20: carbonization chamber
30: riser
100: buffer connector
110: lead
120: pressure gauge
130: spare buffer connector
200: connection
300: opening and closing unit

Claims (9)

In the coke oven gas processing apparatus for processing the coke oven gas generated in each of a plurality of carbonization chamber,
A plurality of riser pipes installed at multiple ends of each carbonization chamber to transfer gas generated in the carbonization chamber to a gas collection tube; and
A buffer connecting pipe for connecting the plurality of rising pipes to each other and temporarily collecting and storing the gas before transporting the gas to the gas collecting pipe.
Coke oven gas processing apparatus comprising a. The method of claim 1,
And the buffer connector is hermetically connected to the riser by a connection. The method of claim 1,
At the end of the buffer connection pipe is a coke oven gas processing device is provided with a lead for dissipating the gas when the gas of the gas collection pipe more than the collection amount is introduced. The method of claim 1,
The inner surface of the buffer tube is made of refractory coke oven gas treatment device for maintaining the temperature of the gas in the buffer tube. The method of claim 2,
The rising pipe is provided with an opening and closing unit for opening and closing of the rising pipe, coke oven gas processing device. The method according to any one of claims 1 to 5,
And said plurality of risers comprise a group of units grouped into at least two riser unit scales. The method of claim 6,
Coke oven gas processing device is provided with a pressure gauge that can measure the gas pressure in the buffer connector in the buffer connector. The method of claim 6,
One end or both ends of the buffer connector is provided with a preliminary buffer connector for connecting the buffer connector and the adjacent buffer connector, coke oven gas processing apparatus. The method of claim 1,
The buffer connection pipe is provided with a sensible heat recovery device for recovering the sensible heat of the gas in the buffer connection pipe, coke oven gas processing device.

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