KR20210043818A - Portable flare stack for gas pipeline purge - Google Patents

Abstract

The present invention relates to a movable flare stack for purging a gas pipeline, and more specifically, to a flare stack which combusts flare gas to discharge the same in the air. To this end, the flare stack is movably installed, and is characterized by comprising: a fixing unit installed by being in connection with the upper portion of a dispersion pipe; a first flange formed by being in connection with the upper portion of the fixing unit; a second flange coupled by being in connection with the upper portion of the first flange; a backfire preventing unit installed by being in connection between the first flange and the second flange; a combustion unit formed by being in connection with the upper portion of the second flange; an ignition unit located at one side of the upper portion of the combustion unit; a gas injection unit located at one side of the ignition unit; and a steam unit extended from the outside of the combustion unit to the inside of a gas induction pipe so as to spray steam for purging.

Description

PORTABLE FLARE STACK FOR GAS PIPELINE PURGE

The present invention relates to a movable flare stack for purging a gas pipe, and more specifically, a movable flare stack that is easily movable above the gas pipe is installed to safely burn hazardous substances that are unavoidably discharged during operation of the process and discharge them into the atmosphere. It relates to a movable flare stack for purging a gas pipe.

In general, flare gas is a waste gas generated in a factory, has volatile and flammable properties, and is discharged to the outside through a flare gas discharge device called a flare stack.

Various by-product gases generated during operation in the blast furnace and steelmaking or coke plants of steel mills are used as fuel for heating furnaces in each product production plant in the steel mill.If these by-product gas pipes are used for a long period of time, corrosion and pores are generated in the welds of the pipes. The pipe has to be replaced because it needs to be repaired or because the thickness of the pipe has become thinner due to internal corrosion of the pipe, so that gas cannot be supplied any more.

During repair work on gas pipes, if welding or fusing work is performed while gas is not completely exhausted, an explosion or fire may occur due to residual gas inside the pipe. Therefore, in this case, the gas inside the gas pipe must be completely exhausted to the outside, and the gas inside the pipe to be repaired or replaced by performing water sealing at both ends of the pipe at the water pipes installed for each certain section of the gas pipe. Must be exhausted to the outside.

There are two methods of exhausting gas: the N2 Injection method, which exhausts the gas by supplying nitrogen into the gas pipe, and the Steam Ejecting method, which exhausts the gas by spraying steam. The N2 Injection or Steam Ejecting method is air pollution caused by gas discharge. It entails the risk of gas poisoning and human life.

Among these, when the gas is exhausted by the steam ejecting method, static electricity (ejection charge) may occur when the gas and steam are ejected, and in the case of an ejection charge, the flame may backfire into the pipe and cause an explosion of the gas pipe. In addition, gas is exhausted into the atmosphere, which causes pollution to the environment, and when there is a person staying in the vicinity of the gas exhaust area, serious industrial accidents such as human accidents due to gas poisoning have been raised.

Korean Registered Patent Publication No. 10-1978914

The present invention was conceived in consideration of the above problems, and an object of the present invention is to safely burn dangerous substances that are unavoidably discharged during the operation of the process and discharge them into the atmosphere. By installing a flare stack, water (H ₂ O) injected from the steam unit and carbon monoxide (CO) injected from the gas injection unit undergo a chemical reaction, and at the same time, oxygen (O ₂ ) introduced from the air intake pipe is mixed with each other. It is to provide a movable flare stack for purging a gas pipe for accelerating the combustion of flare gas.

The objects of the embodiments of the present invention are not limited to the above-mentioned objects, and other objects not mentioned will be clearly understood by those of ordinary skill in the technical field to which the present invention pertains from the following description. .

According to a feature for achieving the above object, in the flare stack for burning flare gas and discharging it into the atmosphere,

The flare stack is installed in a mobile type,

A fixing part installed in communication with the upper part of the defense pipe;

A first flange formed in communication with an upper portion of the fixing part;

A second flange connected to and connected to an upper portion of the first flange;

A backfire prevention unit installed in communication between the first flange and the second flange;

A combustion unit formed in communication over the second flange;

An ignition unit located on one side of the combustion unit;

A gas injection unit located at one side of the ignition unit;

And a steam unit extending from the outside of the combustion unit to the inside of the gas guide pipe to inject and purify the steam.

In addition, the combustion unit,

A gas guide pipe formed on the inside;

A plurality of air intake pipes formed by communicating the outer peripheral surface of the combustion unit and the gas guide pipe;

It characterized in that it comprises a; burner tip installed on the top of the gas guide pipe.

In addition, water (H ₂ O) injected from the steam unit and carbon monoxide (CO) injected from the gas injection unit cause a chemical reaction, and at the same time, oxygen (O ₂ ) introduced from the air intake pipe is mixed with each other. It is characterized by being burned.

In addition, the steam unit is characterized in that the injection at a pressure between ^{1 ~ 5 Kg / cm 2.}

In addition, the ignition unit,

It characterized in that it further comprises an ignition device installed on one side, a connector coupled to the ignition device, and an ignition cable connected to the connector.

In addition, the gas injection unit,

A gas supply unit installed on one side, a first supply pipe connected to the gas supply unit on one side and a connector formed on the other side, and an ignition valve installed on one side to be connected by the first supply pipe and the connector, and a connector formed on the other side. It characterized in that it further comprises a second supply pipe connected to the injection unit.

In addition, the steam unit,

It is characterized in that it further comprises a steam supply unit installed on one side, a steam hose connected to the steam supply unit on one side and a steam valve installed, and a steam hose on which a connector is formed, and a steam nozzle connected to the steam hose on the other side.

In addition, one side of the end of the steam hose is characterized in that it is bent in the upward direction.

According to the movable flare stack for purging a gas pipe according to the present invention, a movable flare stack for easy installation is installed on the upper part of the defense pipe, so that water (H ₂ O) injected from the steam unit and carbon monoxide injected from the gas injection unit are installed. While (CO) undergoes a chemical reaction, oxygen (O ₂ ) introduced from the air intake pipe is mixed with each other to promote combustion of flare gas.

1 is a perspective view showing a movable flare stack for purging a gas pipe according to an embodiment of the present invention;
2 is a view showing a coupling relationship between an ignition unit and a gas injection unit in a movable flare stack for purging a gas pipe according to an embodiment of the present invention;
3 is a view showing a coupling relationship of a steam unit in a movable flare stack for purging a gas pipe according to an embodiment of the present invention.

The following objects, other objects, features, and advantages of the present invention will be easily understood through the following preferred embodiments related to the accompanying drawings. However, the present invention is not limited to the embodiments described herein and may be embodied in other forms.

Rather, the embodiments introduced herein are provided so that the disclosed content may be thorough and complete, and the spirit of the present invention may be sufficiently conveyed to those skilled in the art.

The embodiments described and illustrated herein also include complementary embodiments thereof.

In this specification, the singular form also includes the plural form unless specifically stated in the phrase. As used in the specification, "comprise" and/or "comprising" does not exclude the presence or addition of one or more other components.

Hereinafter, the present invention will be described in detail with reference to the drawings. In describing the specific embodiments below, a number of specific contents have been prepared to explain the invention in more detail and to aid understanding. However, readers who have knowledge in this field enough to understand the present invention can recognize that it can be used without these various specific contents. In some cases, it should be mentioned in advance that parts that are commonly known in describing the invention and are not significantly related to the invention are not described in order to avoid confusion in describing the invention.

1 is a perspective view showing a movable flare stack for purging a gas pipe according to an embodiment of the present invention, and FIG. 2 is a combination of an ignition unit and a gas injection unit in a movable flare stack for purging a gas pipe according to an embodiment of the present invention It is a view showing the relationship, Figure 3 is a view showing the coupling relationship of the steam unit in the movable flare stack for purging a gas pipe according to an embodiment of the present invention.

The present invention relates to a movable flare stack for purging a gas pipe, and more specifically, a movable flare stack that is easily movable above the gas pipe is installed to safely burn hazardous substances that are unavoidably discharged during operation of the process and discharge them into the atmosphere. It relates to a movable flare stack for purging a gas pipe.

As shown in FIGS. 1 to 3, the flare stack 100 according to the present invention has a large fixing part 20, a first flange 30, a second flange 40, a backfire prevention part 50, and a combustion part ( 60), an ignition unit 70, a gas injection unit 80, and a steam unit 90.

The flare stack 100 is installed in a movable type, and a fixing part 20 is formed at the lower part to communicate with the upper part of the defense pipe 10.

The fixing part 20 is firmly coupled to each other by bolting, fitting, or rotational coupling with the defense pipe 10. When the exhausted gas and the steam for purge from the steam part 90 to be described below are discharged, the pressure It is preferable to burn the discharged gas while being securely fixed on the upper part of the dissipation tube 10 by preventing a gap or separation between the dissipation tube 10 and the fixing part 20 in advance.

At this time, the fixing part 20 can be changed according to the diameter of the defense pipe 10, and any one of a corrugated pipe or a flexible pipe is installed under the fixing part 20 so that the defense pipe 10 And can be fixed flexibly.

The first flange 30 is formed in communication with an upper portion of the fixing part 20, and a second flange 40 communicating with the upper portion of the first flange 30 is coupled.

A spiral groove (not shown) is installed around the inner circumference of the first flange 30 and the second flange 40 to prevent the exhausted gas from being a bottleneck occurring at the narrow inlet of the second flange 40. .

In this way, in the process of exhausting gas and steam between the first flange 30 and the second flange 40, it is possible to prevent the flame from being backfired due to the occurrence of an ejection charge within the flare stack 100 or a weak flow of gas. A backfire prevention part 50 is installed to prevent the flame from being backfired.

In addition, the combustion part 60 is formed in communication with the second flange 40.

The combustion unit 60 includes a gas guide pipe 61 formed inside, and a plurality of air suction pipes 62 formed by communicating the outer circumferential surface of the combustion unit 60 and the gas guide pipe 61, A burner tip 63 is installed on the gas guide pipe 61.

One side of the plurality of air intake pipes 62 may be formed to be bent downward and bend in an oblique direction, and the angle of the air intake pipe 62 is preferably installed to be bent at about 20 to 50°.

In addition, a suction port (not shown) for inhaling external air is installed at one side of the air intake pipe 62 to inhale external air to burn gas.

The ignition unit 70 is located on one side above the combustion unit 60 and is configured to ignite in order to burn the gas.

The ignition unit 70 includes an ignition device 71 installed on one side, a connector 72 for coupling with the ignition device 71, and an ignition cable 73 connected to the connector 72 It is a configuration that burns gas together with the steam unit 90 and the gas injection unit 80 to be described below.

In the ignition unit 70, when the ignition cable 73 is installed in the ignition device 71 via the connector 72 to ignite, the spark is transmitted to the ignition cable 73 to be described below. It is ignited by contacting the gas delivered from the injection unit 80.

At this time, the ignition cable 73 is internally provided with a wire (not shown) for transferring the spark received from the ignition device 71 to the ignition unit 70 to induce movement of the spark.

The gas injection unit 80 is installed to correspond to the ignition unit 70, and is installed to be spaced apart at a predetermined interval.

In addition, the gas injection unit 80 includes a gas supply unit 81 installed on one side, a first supply pipe 83 connected to the gas supply unit 81 on one side and a connector 82 on the other side, and one side The silver ignition valve 84 is installed and connected by the first supply pipe 83 and the connector 82, and the second supply pipe 85 is formed with a connector 82 and connected to the gas injection unit 80 on the other side. It is a configuration that includes more.

That is, the gas injection unit 80 is coupled to the gas supply unit 81 and the first supply pipe 83, and the first supply pipe 83 has an ignition valve 84 installed at one side through the connector 82. It is connected to the second supply pipe 83 and is coupled to the gas injection unit 80 by a connector 82 installed on the other side of the second supply pipe 85.

When the gas injection unit 80 opens the ignition valve 84 so that gas is introduced, the gas is injected from the gas supply unit 81 through the first supply pipe 83 and the second supply pipe 85. The gas is transferred to the part 80 so as to be ignited by contacting the spark of the ignition part 70.

At this time, it further includes a steam unit 90 extending from the outside of the combustion unit 60 to the inside of the gas guide pipe 61 and spraying and purging steam.

The steam unit 90 includes a steam supply unit 91 installed on one side, a steam hose connected to the steam supply unit 91 on one side, and a steam valve 93 installed, and a connector 92 on the other side. 94), and a steam nozzle 95 connected to the steam hose 94.

That is, the steam unit 90 is coupled through the steam hose 94 and the connector 92 in which the steam supply unit 91 and the steam valve 93 are installed, and the steam nozzle 95 is coupled to one side.

In this way, when the steam valve 93 is opened so that the steam flows in, the steam unit 90 introduces steam from the steam supply unit 91 to the steam hose 94 and injects the steam to the steam nozzle 95. As a result, the flare gas and air are mixed and the momentum of the gas is increased due to the injection of steam to induce perfect combustion, thereby increasing the efficiency of combustion.

In addition, one end of the steam hose 94 is manufactured in an upwardly curved shape to increase the gas being exhausted to the outside, and at the same time, the combustion air introduced through the air intake pipe 62 is supplied to the strong pressure of the steam. It promotes the driving force that is pulled by.

_{The water (H 2} O) injected from the steam unit 90 and carbon monoxide (CO) injected from the gas injection unit 80 cause a chemical reaction and are introduced from the air intake pipe 62. Oxygen (O ₂ ) is combusted by mixing with each other.

At this time, the steam unit 90 is sprayed at a pressure between ^{1 and 5 Kg/cm 2 , which is less than 1 Kg/cm 2} , the pressure is weakened to contact and disperse the gas. The distribution is lowered and the combustion efficiency is lowered, and when the pressure of the steam unit 90 ^{exceeds 5 Kg/cm 2} , the pressure increases and the contact with the gas and distribution distribution increase. Since jet charging may occur, the steam unit 90 is preferably injected at a pressure between ^{1 and 5 Kg/cm 2.}

Hereinafter, the operation sequence of the movable flare stack for purging a gas pipe according to the present invention will be described in detail with reference to FIGS. 1 to 3.

First, a movable flare stack for purging a gas pipe according to the present invention is firmly coupled with the fixing part 20 on the upper part of the defense pipe 20.

Thereafter, when the steam valve 93 of the steam unit 90 is opened so that the steam flows in, the steam is introduced into the steam hose 94 from the steam supply unit 91 and then installed inside the gas guide pipe 61. Steam is sprayed through the steam nozzle 95 to purify, and flare gas is discharged to the outside, that is, to the burner tip 63 together with the steam.

At this time, the steam unit 90 is injected at a pressure between ^{1 and 5 Kg/cm 2 , which is less than 1 Kg/cm 2} , the pressure of the steam unit 90 is weakened and the contact with the gas and distribution distribution Is lowered, the combustion efficiency is lowered, and when the pressure of the steam unit 90 ^{exceeds 5 Kg/cm 2} , the pressure increases and the contact with the gas and distribution distribution increase, so that it is over-combusted inside the flare stack and ejected inside the flare stack. Since charging may occur, the steam unit 90 is sprayed at a pressure between ^{1 and 5 Kg/cm 2.}

In addition, external air is sucked into the gas guide pipe 61 from the plurality of air intake pipes 62 formed by communicating the outer circumferential surface of the combustion unit 60 and the gas guide pipe 61 to generate steam and steam to the burner tip 63. By mixing and discharging together, the combustion process is promoted later.

At this time, the external air must be supplied with a sufficient amount of air to satisfy the combustion conditions of the exhausted flare gas to perform complete combustion.

Thereafter, when the ignition valve 84 of the gas injection unit 80 is opened so that gas is introduced, the gas is supplied from the gas supply unit 81 through the first supply pipe 83 and the second supply pipe 85. Gas is transferred to the (80) side.

At this time, when the ignition unit 71 of the ignition unit 70 is first ignited, the spark is transmitted to the ignition cable 73 to generate a spark at the ignition unit 70 and the gas injection unit 80 It is a secondary ignition that is burned by contact with the gas supplied from.

In other words, steam induces perfect combustion by mixing the flare gas with the air introduced from the outside and increasing the momentum of the flare gas.The reaction between the steam and the gas leads to perfect combustion (CO + H ₂ O → CO ₂ + H ₂ ). This is done easily.

Accordingly, by installing a movable flare stack according to the present invention, it is easy to install it on the top of the defense pipe 10, and water (H ₂ O) sprayed from the steam unit 90 and the gas injection unit 80 The injected carbon monoxide (CO) is chemically reacted and oxygen (O ₂ ) introduced from the air intake pipe 62 is mixed with each other to promote combustion of the flare gas.

Since the embodiments described in the present specification and the configurations shown in the drawings are only the most preferred embodiment of the present invention and do not represent all the technical spirit of the present invention, various equivalents that can replace them at the time of the present application It should be understood that there may be variations and variations.

100: flare stack 10: defense tube
20: fixing part 30: first flange
40: second flange 50: backfire prevention unit
60: combustion unit 61: gas induction pipe
62: air intake pipe 63: burner tip
70: ignition unit 71: ignition device
72: connector 73: ignition cable
80: gas injection unit 81: gas supply unit
82: connector 83: first supply pipe
84: ignition valve 85: second supply pipe
90: steam unit 91: steam supply unit
92: connector 93: steam valve
94: steam hose 95: steam nozzle

Claims (8)

In the flare stack that burns flare gas and discharges it into the atmosphere,
The flare stack 100 is installed in a mobile type,
A fixing part 20 which is installed in communication with the upper part of the defense pipe 10;
A first flange 30 formed in communication with an upper portion of the fixing part 20;
A second flange 40 connected to and connected to an upper portion of the first flange 30;
A backfire prevention part 50 installed in communication between the first flange 30 and the second flange 40;
A combustion part 60 formed in communication over the second flange 40;
An ignition unit 70 positioned on one side of the combustion unit 60;
A gas injection unit 80 positioned at one side of the ignition unit 70;
A movable flare stack for purging a gas pipe, comprising: a steam unit 90 extending from the outside of the combustion unit 60 to the inside of the gas guide pipe 61 and spraying and purging the steam.
The method according to claim 1,
The combustion unit 60,
A gas guide pipe 61 formed inside;
A plurality of air intake pipes 62 formed by communicating the outer circumferential surface of the combustion unit 60 and the gas guide pipe 61;
A movable flare stack for purging a gas pipe, comprising: a burner tip (63) installed on the gas guide pipe (61).
The method according to claim 1,
_{Water (H 2} O) injected from the steam unit 90 and carbon monoxide (CO) injected from the gas injection unit 80 cause a chemical reaction, and at the same time, oxygen introduced from the air intake pipe 62 ( O ₂ ) movable flare stack for purging gas pipes, characterized in that they are combusted by mixing with each other.
The method according to claim 1,
The steam unit 90 is a movable flare stack for purging a gas pipe, characterized in that sprayed at a pressure between 1 and 5 Kg/cm ^2.
The method according to claim 1,
The ignition unit 70,
Gas pipe purging, characterized in that it further comprises an ignition device 71 installed on one side, a connector 72 coupled to the ignition device 71, and an ignition cable 73 connected to the connector 72 Dragon movable flare stack.
The method according to claim 1,
The gas injection unit 80,
A gas supply unit 81 installed on one side, a first supply pipe 83 connected to the gas supply unit 81 on one side and a connector 82 formed on the other side, and an ignition valve 84 are installed on the other side. For gas pipe purging, characterized in that it further comprises a second supply pipe 85 connected to the gas injection unit 80 by being connected to the first supply pipe 83 and the connector 82 and having a connector 82 formed on the other side. Movable flare stack.
The method according to claim 1,
The steam unit 90,
A steam supply unit 91 installed on one side, one side connected to the steam supply unit 91, a steam valve 93 is installed, and a steam hose 94 having a connector 92 formed on the other side, and the steam hose ( A movable flare stack for purging a gas pipe, characterized in that it further comprises a steam nozzle (95) connected to the 94).
The method of claim 7,
A movable flare stack for purging a gas pipe, characterized in that one end of the steam hose 94 is bent upward.

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