KR101419880B1 - Apparatus for manufacturing wire rod having gas booster - Google Patents

Apparatus for manufacturing wire rod having gas booster Download PDF

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Publication number
KR101419880B1
KR101419880B1 KR1020120151300A KR20120151300A KR101419880B1 KR 101419880 B1 KR101419880 B1 KR 101419880B1 KR 1020120151300 A KR1020120151300 A KR 1020120151300A KR 20120151300 A KR20120151300 A KR 20120151300A KR 101419880 B1 KR101419880 B1 KR 101419880B1
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South Korea
Prior art keywords
gas
pressure
booster
heating furnace
fan impeller
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KR1020120151300A
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Korean (ko)
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KR20140082062A (en
Inventor
김정은
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주식회사 포스코
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Priority to KR1020120151300A priority Critical patent/KR101419880B1/en
Publication of KR20140082062A publication Critical patent/KR20140082062A/en
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/10—Reduction of greenhouse gas [GHG] emissions
    • Y02P10/143—Reduction of greenhouse gas [GHG] emissions of methane [CH4]

Abstract

The apparatus for manufacturing a wire rod according to an embodiment of the present invention includes a heating furnace for heating a wire rod, a gas supply part for supplying gas to the heating furnace through a gas supply pipe connected to the burner of the heating furnace, And a gas booster connected to increase the pressure of the gas supplied from the gas supply unit to the heating furnace.

Description

[0001] APPARATUS FOR MANUFACTURING WIRE ROD HAVING GAS BOOSTER [0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wire manufacturing apparatus, and more particularly, to a wire manufacturing apparatus having a gas booster at the inlet side of a heating furnace.

Generally, a heating furnace is a facility for uniformly heating a heating material such as a slab or billet so as to be rolled, and is usually composed of a preheating zone, a heating zone and a crack. The preheating zone, the heating zone, The ambient temperature is set in consideration of the temperature and the residence time in the furnace.

The ambient temperature is adjusted by injecting fuel gas and combustion air through a burner and burning in the furnace. At this time, the fuel gas used as a heat source is usually supplied from a coke oven gas (COG) generated in a coke oven and a blast furnace gas (BFG) generated from a blast furnace or a converter gas (LDG; Linz Donawitz Converter Gas).

Such a mixed gas is generated in the coking process in the sintering plant, is temporarily stored in the gas storage holder, and then supplied to the burner through the gas supply pipe connected to the plurality of burners installed in the heating furnace in the gas station.

However, the mixed gas supplied to the heating furnace burner must be supplied at a stable pressure and flow rate when supplied to the inlet of the heating furnace. While the gas is supplied through the structurally long gas supply pipe, A considerable amount of gas pressure drop occurs at the inlet side of the reactor, and the productivity is deteriorated when the wire rod is manufactured due to unstable gas supply pressure and inadequate flow rate supply.

In order to solve the above problems, the present invention provides a wire manufacturing apparatus comprising a pressure-increasing device for increasing a gas pressure at an inlet side of a gas mixture supplied to a heating furnace, And a wire rod manufacturing apparatus including the same.

The apparatus for manufacturing a wire rod according to an embodiment of the present invention includes a heating furnace for heating a wire rod, a gas supply part for supplying gas to the heating furnace through a gas supply pipe connected to the burner of the heating furnace, To raise the pressure of the gas supplied from the gas supply unit to the heating furnace.

The wire manufacturing apparatus according to the present invention may further include a gas refining unit provided at one side of the gas booster to refine the supply gas to prevent clogging of the gas supply pipe.

The wire manufacturing apparatus according to the present invention may further include a water sealing valve provided at one side of the gas supply unit and blocking the flow path of the supplied gas using the water head pressure of the sealing water.

The gas may be a mixture of liquefied natural gas (LNG), blast furnace gas (BFG), coke oven gas (COG), and a transition gas (LDG) Gas.

The gas booster includes a booster fan impeller which receives gas from the gas supply unit and regulates a discharge speed of the gas by rotation of the fan, a booster fan impeller provided at an outlet side of the booster fan impeller, A seal port connected to the booster fan impeller for removing impurities from the gas supplied from the gas supply unit, and a pressure sensor connected to the pressure sensor, And an inverter control panel for controlling the flow of the gas through the sensed gas pressure signal and for controlling the fan speed of the booster fan impeller.

Wherein the gas booster includes an inlet electromotive valve and an outlet electromotive valve which are respectively attached to an inlet side and an outlet side of the booster fan impeller and opened and closed in accordance with a control signal of the inverter control board, And a booster bypass electromotive valve provided in parallel with the booster fan impeller and opened and closed in accordance with the control signal of the inverter control panel.

The booster fan impeller receives a pressure signal from the pressure sensor and is operable to supply gas to the furnace at a pressure in the range of 1,150 mmH 2 O to 1,250 mm H 2 O.

According to the embodiment of the present invention, stabilization of the supply gas pressure in the heating furnace can be facilitated, stabilization of the operation can be achieved by preventing gas flow rate decrease and pressure hunting prevention by stabilizing the gas pressure.

In addition, it is possible to obtain a productivity improvement effect by reducing the heating atmosphere which has conventionally occurred, and by providing a heating furnace refining facility, it is possible to prevent the clogging of the pipe, and the quality of the gas supplied to the heating furnace can be secured.

BRIEF DESCRIPTION OF DRAWINGS FIG. 1 is a view schematically showing a wire manufacturing apparatus equipped with a gas booster according to an embodiment of the present invention; FIG.
2 is a schematic view of a gas boosting device according to an embodiment of the present invention.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings, which will be readily apparent to those skilled in the art to which the present invention pertains. The present invention may be embodied in many different forms and is not limited to the embodiments described herein.

In addition, in the various embodiments, elements having the same configuration are denoted by the same reference numerals, and only other configurations will be described in the other embodiments.

The drawings are schematic and illustrate that they are not drawn to scale. The relative dimensions and ratios of the parts in the figures are shown exaggerated or reduced in size for clarity and convenience in the figures, and any dimensions are merely illustrative and not restrictive. Also, to the same structure, element, or component appearing in more than one of the figures, the same reference numerals are used to denote similar features. When referring to a portion as being "on" or "on" another portion, it may be directly on the other portion or may be accompanied by another portion therebetween.

The embodiments of the present invention specifically illustrate one embodiment of the present invention. As a result, various variations of the illustration are expected. Thus, the embodiment is not limited to any particular form of the depicted area, but includes modifications of the form, for example, by manufacture.

Hereinafter, a wire manufacturing apparatus according to an embodiment of the present invention will be described with reference to Figs. 1 and 2. Fig.

BRIEF DESCRIPTION OF DRAWINGS FIG. 1 is a view schematically showing a wire manufacturing apparatus equipped with a gas booster according to an embodiment of the present invention; FIG. 1, the wire manufacturing apparatus includes a heating furnace 100, a gas supply unit 200, and a gas booster 300. The apparatus for manufacturing a wire rod according to the present invention relates to a heating furnace 100 and a gas supply apparatus 200 used in a heating process or a hot rolling process in a general wire manufacturing process, ), And the heated material is subjected to a rolling step such as rough rolling and finish rolling. The heating furnace 100 for heating the slab to the rolling temperature in the hot rolling step is not shown in the drawing, but is divided into a preheating furnace, a heating furnace, a cracking furnace, and the like. And the temperature in the heating furnace 100 is maintained at a desired temperature through the combustion in the burner.

The gas supply unit 200 serves to supply a mixed gas to the burner of the heating furnace 100. The gas supply unit 200 supplies the mixed gas to the heating furnace 100 through the gas supply pipe 12 connected to the burner of the heating furnace 100. The mixed gas to be supplied to the burner of the heating furnace 100 is supplied to the burner through a gas produced in the coke process in a sintering plant such as liquefied natural gas (LNG), blast furnace gas (BFG) Coke Oven Gas), and a mixed gas composed of a transition gas (LDG; Linz Donawitz Converter Gas) generated during a steelmaking process.

The gas booster 300 serves to raise the pressure of the supplied gas. The gas booster 300 may be provided at the outlet side of the gas supply unit 200. The switching of the valves is controlled in accordance with the pressure of the supplied gas to raise the gas pressure supplied to the heating furnace 100, .

The apparatus for manufacturing wire according to the present invention may further include a gas purifier 400 disposed at one side of the gas booster 300 and serving to purify the supplied gas. The gas purifier 400 may be located at the outlet side of the gas booster 300 and purge the supply gas to prevent clogging of the gas supply line 12 connected to the heating furnace 100.

The apparatus for manufacturing wire rod according to the present invention may further include a water sealing valve 500 provided at the inlet side of the gas supply unit 200 to block the flow of supplied gas. The water hull side 500 is a device that cuts off the flow of the fluid to the gas supply pipe 12 by making it into a "V" or "U" shape and filling it with water. In other words, it is a device that can maintain the safety of the workers and stable operation of the plant facilities during the maintenance work of the gas pipeline which supplies the by-produced gas stably in the steel making process or the plant facility maintenance work of the gas use factory.

2 is a schematic view of a gas booster 300 according to an embodiment of the present invention. 2, the gas booster 300 includes a booster fan impeller 210, a pressure sensor 220, a seal port 230, and an inverter control panel 240 .

The booster fan impeller 210 is connected to the gas supply unit 200 and the gas supply pipe 12 so as to receive gas from the gas supply unit 200 and adjust the discharge speed of the gas by the rotation of the fan.

The pressure sensor 220 is provided at the outlet side of the booster fan impeller 210 and detects gas pressure from the gas velocity discharged from the booster fan impeller 210. The inlet and outlet valves 212 and 214 of the booster fan impeller 210 are provided at the inlet side and the outlet side of the booster fan 210 so that the valves 212 and 214 are opened to supply the booster fan impeller 210 And senses the exhaust gas pressure in the pressure sensor 220 provided at the outlet side of the booster fan impeller 210. The sensed pressure signal value is input to the inverter control panel 240.

The seal port 230 is connected to the booster fan impeller 210 and serves to remove impurities from the gas supplied from the gas supply unit 200. The impurities may be present in the form of condensed water mixed with the feed gas. By removing the impurities, the dry mixed gas can flow through the gas supply pipe 12, and clogging of the pipe can be prevented.

The pressure signal value sensed by the pressure sensor 220 is input to the inverter control panel 240. The inverter control panel 240 can control the flow of gas through the gas pressure signal and control the gas flow rate. The inverter control panel 240 receives the pressure value of the pressure sensor 220 and adjusts the value of the fan rotation amount RPM of the booster fan impeller 210 to adjust the value of the fan rotation amount RPM of the booster fan impeller 210 to a value in the range of 1,150 mmH 2 O to 1,250 mm H 2 O 100). ≪ / RTI > That is, when a pressure value lower than the preferable pressure range is sensed, the inverter control panel 240 increases the fan rotation amount of the booster fan impeller 210 and, conversely, decreases the fan rotation amount, It is possible to maintain the gas supply pressure in the range of

The gas boosting device 300 includes an inlet electromotive valve 212 and an outlet electromotive valve 214 which are attached to the inlet side and the outlet side of the booster fan impeller 210 and are opened and closed in accordance with the control signal of the inverter control panel 240, And a booster bypass electric valve 216, as shown in FIG.

If an unexpected abnormality occurs between the gas booster 300 and the heating furnace 100 or if the gas discharge pressure of the booster fan 210 rises excessively above the desired pressure range, 212 and the outlet electromotive valve 214 are controlled to be closed by the inverter control panel 240 and the booster bypass electromotive valve 216 can be controlled to be opened. This makes it possible to maintain the static pressure of the wire manufacturing apparatus and prevent gas hunting.

As described above, the wire rod manufacturing apparatus provided with the gas booster according to the embodiment of the present invention can easily stabilize the pressure of the heating furnace supply gas, and can prevent gas flow rate decrease and hunting It is possible to stabilize the operation.

In addition, it is possible to obtain a productivity improvement effect by reducing the heating atmosphere which has conventionally occurred, and by providing a heating furnace refining facility, it is possible to prevent the clogging of the pipe, and the quality of the gas supplied to the heating furnace can be secured.

While the invention has been shown and described with reference to certain preferred embodiments thereof, it will be understood by those skilled in the art that various changes and modifications may be made therein without departing from the spirit and scope of the following claims. Those who are engaged in the technology field will understand easily.

100: heating furnace 200: gas supply part
300: gas booster 400: gas purifier
500: water column 12: gas supply pipe
210: Booster fan impeller 212: Inlet electromotive valve
214: Exit motor control valve 216: Booster bypass electric motor control valve
220: Pressure sensor 230:
240: inverter control board 250: power supply unit

Claims (7)

A heating furnace for heating the wire rod;
A gas supply unit for supplying gas to the heating furnace through a gas supply pipe connected to the burner of the heating furnace; And
And a gas booster connected to the gas supply pipe to raise the pressure of the gas supplied from the gas supply unit to the heating furnace,
The gas pressure-
A booster fan impeller which receives gas from the gas supply unit and regulates a discharge speed of the gas by rotation of the fan;
A pressure sensor provided at an outlet side of the booster fan impeller and sensing a gas pressure from a gas velocity discharged from the booster fan impeller;
A seal port connected to the booster fan impeller and removing impurities from the gas supplied from the gas supply unit; And
And an inverter control panel for controlling the flow of the gas through the gas pressure signal sensed by the pressure sensor and controlling the fan speed of the booster fan impeller. The method according to claim 1,
Further comprising a gas refining unit provided at one side of the gas booster for refining the supply gas to prevent clogging of the gas supply pipe. The method according to claim 1,
Further comprising a water sealing valve provided at one side of the gas supply unit for blocking the flow path of the supplied gas using the water head pressure of the sealing water. The method according to claim 1,
The gas may be a mixture of liquefied natural gas (LNG), blast furnace gas (BFG), coke oven gas (COG), and a transition gas (LDG) A device for producing a gaseous wire rod. delete The method according to claim 1,
The gas pressure-
An inlet electromotive valve and an outlet electromotive valve each attached to an inlet side and an outlet side of the booster fan impeller and opened and closed in accordance with a control signal of the inverter control panel; And
And a booster bypass electromotive valve disposed in parallel with the booster fan impeller between the gas supply unit and the heating furnace and opened and closed in accordance with a control signal of the inverter control board. The method according to claim 1,
Wherein the booster fan impeller receives a pressure signal value from the pressure sensor and is operated to supply gas to the heating furnace at a pressure ranging from 1,150 mmH 2 O to 1,250 mm H 2 O.
KR1020120151300A 2012-12-21 2012-12-21 Apparatus for manufacturing wire rod having gas booster KR101419880B1 (en)

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Application Number Priority Date Filing Date Title
KR1020120151300A KR101419880B1 (en) 2012-12-21 2012-12-21 Apparatus for manufacturing wire rod having gas booster

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KR101419880B1 true KR101419880B1 (en) 2014-07-16

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101958980B1 (en) * 2017-07-21 2019-03-15 주식회사포스코 Apparatus for supply byproduct gas

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06174381A (en) * 1992-12-01 1994-06-24 Ngk Insulators Ltd Controlling equipment of atmosphere of furnace
KR19980010492U (en) * 1996-08-07 1998-05-15 김종진 Water flow confirmation device of water seal facility
JP2004238508A (en) * 2003-02-06 2004-08-26 Jfe Steel Kk Method for utilizing gas of melting furnace for gasification
JP2008267778A (en) 2007-03-23 2008-11-06 Dowa Thermotech Kk Heat treatment system

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06174381A (en) * 1992-12-01 1994-06-24 Ngk Insulators Ltd Controlling equipment of atmosphere of furnace
KR19980010492U (en) * 1996-08-07 1998-05-15 김종진 Water flow confirmation device of water seal facility
JP2004238508A (en) * 2003-02-06 2004-08-26 Jfe Steel Kk Method for utilizing gas of melting furnace for gasification
JP2008267778A (en) 2007-03-23 2008-11-06 Dowa Thermotech Kk Heat treatment system

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