KR101167164B1 - Treating apparatus for waste gas in sintering machine and treating method thereof - Google Patents

Treating apparatus for waste gas in sintering machine and treating method thereof Download PDF

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KR101167164B1
KR101167164B1 KR20100119561A KR20100119561A KR101167164B1 KR 101167164 B1 KR101167164 B1 KR 101167164B1 KR 20100119561 A KR20100119561 A KR 20100119561A KR 20100119561 A KR20100119561 A KR 20100119561A KR 101167164 B1 KR101167164 B1 KR 101167164B1
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regeneration tower
exhaust gas
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조찬용
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • B01D53/77—Liquid phase processes
    • B01D53/78—Liquid phase processes with gas-liquid contact
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B11/00—Making pig-iron other than in blast furnaces
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B19/00—Combinations of furnaces of kinds not covered by a single preceding main group
    • 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
    • Y02P10/20—Recycling

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Abstract

본 발명은 소결기용 배출가스 처리장치 및 그 처리방법에 관한 것으로서, 특히, SOX 및 NOX를 흡착한 활성탄을 재생하는 공정에서 발생되는 배출가스를 효과적으로 중화시키는 소결기용 배출가스 처리장치 및 그 처리방법에 관한 것이다.
본 발명은, 소결기의 배출가스로부터 SOX 또는 NOX를 흡착한 활성탄을 가열하여 재생공정을 행하는 재생탑; 상기 재생탑에서 배출되는 재생탑 배출가스를 포집하는 저장탱크; 및 상기 저장탱크로부터 공급되는 상기 재생탑 배출가스에 세척수 및 테일가스를 분사하여 상기 재생탑 배출가스를 중화시키는 다운커머를 포함하는 것을 특징으로 하는 소결기용 배출가스 처리장치를 제공한다.The present invention relates to an apparatus for treating sintered exhaust gas and a method of treating the same, and more particularly, to an apparatus for treating sintered exhaust gas and a method for treating the same, which effectively neutralizes the exhaust gas generated in a process of regenerating activated carbon adsorbed with SOX and NOX. It is about.
The present invention is a regeneration tower for heating the activated carbon adsorbed SOX or NOX from the exhaust gas of the sintering machine to perform a regeneration step; A storage tank for collecting the regeneration tower discharge gas discharged from the regeneration tower; And a downcomer for neutralizing the regeneration tower discharge gas by injecting washing water and tail gas into the regeneration tower discharge gas supplied from the storage tank.

Figure R1020100119561
Figure R1020100119561

Description

소결기용 배출가스 처리장치 및 그 처리방법 {TREATING APPARATUS FOR WASTE GAS IN SINTERING MACHINE AND TREATING METHOD THEREOF}Emission gas treatment device for sintering machine and its treatment method {TREATING APPARATUS FOR WASTE GAS IN SINTERING MACHINE AND TREATING METHOD THEREOF}

본 발명은 소결기용 배출가스 처리장치 및 그 처리방법에 관한 것으로서, 특히, SOX 및 NOX를 흡착한 활성탄을 재생하는 공정에서 발생되는 배출가스를 효과적으로 중화시키는 소결기용 배출가스 처리장치 및 그 처리방법에 관한 것이다.
The present invention relates to an apparatus for treating sintered exhaust gas and a method of treating the same, and more particularly, to an apparatus for treating sintered exhaust gas and a method for treating the same, which effectively neutralizes the exhaust gas generated in a process of regenerating activated carbon adsorbed with SOX and NOX. It is about.

일반적인 철강제조는 용선을 생산하는 제선공정, 용선에서 불순물을 제거하는 제강공정, 액체상태의 철이 고체가 되는 연주공정, 철을 강판이나 선재로 만드는 압연공정으로 이루어진다.Typical steelmaking consists of a steelmaking process to produce molten iron, a steelmaking process to remove impurities from molten iron, a casting process to solidify the liquid iron, and a rolling process to make iron steel or wire.

철광석으로 강철을 만드는 공정 중 앞 단계인 선철을 만드는 공정을 제선이라 하고, 선철로 강철을 만드는 공정을 제강이라 한다.The process of making pig iron, the first step in making steel from iron ore, is called steelmaking, and the process of making steel from pig iron is called steelmaking.

연주공정은 액체생태인 용강을 주형(Mold)에 주입한 후 연속 주조기를 통과시키면서 냉각, 응고시켜 연속적으로 슬래브(Slab)나 블룸(Bloom) 등의 중간 소재로 만들어내는 공정이다.The casting process is a process of injecting liquid molten steel into a mold and then cooling and solidifying it while passing through a continuous casting machine to continuously produce an intermediate material such as a slab or a bloom.

이 과정에서 블룸은 다시 강편 압연기를 거쳐 빌릿(Billet)으로 변하며 선재 압연기를 통해 선재로 가공된다.In this process, the bloom is converted into a billet (Billet) again through a rolling mill, and processed into a wire rod through a wire mill.

또한, 슬래브는 후판 압연기를 거쳐 후판으로 생산되거나 열간 압연장치를 통과하면서 열연코일이나 열연강판 등으로 만들어진다.Further, the slab is produced as a heavy plate through a plate rolling mill or as a hot rolled coil or a hot rolled steel plate while passing through a hot rolling mill.

용선을 제조하는 제선공정은 철광석으로부터 용선을 생산하는 고로에 의해 이루어질 수 있으며, 코크스오븐에서 건류된 코크스와 소결원료를 소결기에 장입하고 소결공정을 행하여 고로에 장입되는 소결광을 제조한다.
The steelmaking process for manufacturing molten iron may be performed by a blast furnace for producing molten iron from iron ore, and charged with coke and sintered raw material dried in the coke oven into the sintering process to produce a sintered ore charged in the blast furnace.

상기한 기술구성은 본 발명의 이해를 돕기 위한 배경기술로서, 본 발명이 속하는 기술분야에서 널리 알려진 종래기술을 의미하는 것은 아니다.The technical structure described above is a background technique for assisting the understanding of the present invention, and does not mean the prior art widely known in the technical field to which the present invention belongs.

본 발명은 SOX 및 NOX를 흡착한 활성탄을 재생하는 공정에서 발생되는 배출가스를 효과적으로 중화시키는 소결기용 배출가스 처리장치 및 그 처리방법을 제공하는데 그 목적이 있다.
SUMMARY OF THE INVENTION An object of the present invention is to provide a waste gas treatment apparatus for a sintering machine and a method of treating the same, which effectively neutralizes the waste gas generated in the process of regenerating activated carbon adsorbed by SOx and NOx.

상기와 같은 목적을 달성하기 위하여 본 발명은, 소결기의 배출가스로부터 SOX 또는 NOX를 흡착한 활성탄을 가열하여 재생공정을 행하는 재생탑; 상기 재생탑에서 배출되는 재생탑 배출가스를 포집하는 저장탱크; 및 상기 저장탱크로부터 공급되는 상기 재생탑 배출가스에 세척수 및 테일가스를 분사하여 상기 재생탑 배출가스를 중화시키는 다운커머를 포함하는 것을 특징으로 하는 소결기용 배출가스 처리장치를 제공한다.In order to achieve the above object, the present invention, a regeneration tower for performing a regeneration process by heating the activated carbon adsorbed SOX or NOX from the exhaust gas of the sintering machine; A storage tank for collecting the regeneration tower discharge gas discharged from the regeneration tower; And a downcomer for neutralizing the regeneration tower discharge gas by injecting washing water and tail gas into the regeneration tower discharge gas supplied from the storage tank.

또한, 상기 다운커머는, 상기 재생탑 배출가스, 상기 세척수 및 상기 테일가스가 혼합되는 반응탱크; 상기 반응탱크에 연결되고 상기 세척수 및 상기 테일가스를 상기 반응탱크에 공급하는 제1주입관; 및 상기 제1주입관과 비교하여 하측에 위치되도록 상기 반응탱크에 연결되고 상기 재생탑 배출가스를 상기 반응탱크에 공급하는 제2주입관을 포함하는 것을 특징으로 한다.The downcomer may include a reaction tank in which the regeneration tower discharge gas, the washing water, and the tail gas are mixed; A first injection pipe connected to the reaction tank and supplying the washing water and the tail gas to the reaction tank; And a second injection pipe connected to the reaction tank so as to be positioned below the first injection pipe and supplying the regeneration tower discharge gas to the reaction tank.

또한, 본 발명은, (a) 소결기의 배출가스로부터 SOX 또는 NOX를 흡착한 활성탄을 재생탑에서 가열하여 재생하는 단계; (b) 상기 재생탑에서 배출되는 재생탑 배출가스를 저장탱크에 충진하는 단계; 및 (c) 상기 저장탱크에서 공급되는 상기 재생탑 배출가스에 세척수 및 테일가스를 분사하여 상기 재생탑 배출가스를 중화시키는 단계를 포함하는 것을 특징으로 하는 소결기용 배출가스 처리방법을 제공한다.In addition, the present invention, (a) regenerating by heating the activated carbon adsorbed SOX or NOX from the exhaust gas of the sintering machine in a regeneration tower; (b) filling the storage tank with the regeneration tower discharge gas discharged from the regeneration tower; And (c) neutralizing the regeneration tower discharge gas by spraying the washing water and tail gas on the regeneration tower discharge gas supplied from the storage tank.

또한, 상기 테일가스는 NH4OH, H2SO4 및 H2SO3 중 어느 하나를 포함하여 이루어지는 것을 특징으로 한다.
In addition, the tail gas is characterized in that it comprises any one of NH4OH, H2SO4 and H2SO3.

본 발명에 따른 소결기용 배출가스 처리장치 및 그 처리방법은 활성탄을 재생하는 공정에서 발생되는 배출가스가 세척수 및 테일가스에 의해 중화되므로 대기오염을 줄일 수 있는 이점이 있다.
Exhaust gas treatment apparatus and treatment method for the sintering apparatus according to the present invention has the advantage that the emission gas generated in the process of regenerating the activated carbon is neutralized by the wash water and tail gas to reduce the air pollution.

도 1은 본 발명의 일 실시예에 따른 소결기용 배출가스 처리장치가 도시된 구성도이다.
도 2는 본 발명의 일 실시예에 따른 소결기용 배출가스 처리방법이 도시된 순서도이다.1 is a block diagram showing an exhaust gas treatment apparatus for a sintering apparatus according to an embodiment of the present invention.
Figure 2 is a flow chart illustrating a waste gas treatment method for a sintering machine according to an embodiment of the present invention.

이하, 첨부된 도면들을 참조하여 본 발명에 따른 소결기용 배출가스 처리장치 및 그 처리방법의 일 실시예를 설명한다.Hereinafter, with reference to the accompanying drawings will be described an embodiment of the exhaust gas treatment apparatus for a sintering machine according to the present invention and a treatment method thereof.

이러한 과정에서 도면에 도시된 선들의 두께나 구성요소의 크기 등은 설명의 명료성과 편의상 과장되게 도시되어 있을 수 있다.In this process, the thicknesses of the lines and the sizes of the components shown in the drawings may be exaggerated for clarity and convenience of explanation.

또한, 후술되는 용어들은 본 발명에서의 기능을 고려하여 정의된 용어들로써, 이는 사용자, 운용자의 의도 또는 관례에 따라 달라질 수 있다.In addition, the terms described below are terms defined in consideration of the functions of the present invention, which may vary depending on the intention or custom of the user, the operator.

그러므로 이러한 용어들에 대한 정의는 본 명세서 전반에 걸친 내용을 토대로 내려져야 할 것이다.Therefore, definitions of these terms should be made based on the contents throughout this specification.

도 1은 본 발명의 일 실시예에 따른 소결기 배출가스 처리장치가 도시된 구성도이다.1 is a block diagram showing a sintering apparatus exhaust gas treatment apparatus according to an embodiment of the present invention.

도 1을 참조하면, 본 발명의 일 실시예에 따른 소결기용 배출가스 처리장치는 소결기(10)로부터 배출되는 가스 중에 포함되는 분진을 제거하는 필터부(20)와, 필터부(20)를 통과한 가스 중에 SOX를 제거하는 제1흡착부(30)와, 제1흡착부(30)를 통과한 가스를 압송하여 가스를 산노점 이상으로 가열시키는 메인팬(40)과, 메인팬(40)에 의해 압송되는 가스 중에 포함되는 NOX를 제거하는 제2흡착부(50)와, 제1흡착부(30) 및 제2흡착부(50)에서 SOX 및 NOX를 흡착하기 위한 촉매로 사용되는 활성탄을 가열하여 재생공정을 행하는 재생탑(60)과, 재생탑(60)에서 배출되는 재생탑 배출가스를 포집하는 저장탱크(90)와, 저장탱크(90)로부터 공급되는 재생탑 배출가스에 세척수 및 테일가스(Tail Gas)를 분사하여 재생탑 배출가스를 중화시키는 다운커머(Down Comer : 80)를 포함한다.Referring to Figure 1, the exhaust gas treatment apparatus for a sintering apparatus according to an embodiment of the present invention, the filter unit 20 and the filter unit 20 for removing dust contained in the gas discharged from the sintering machine 10, The first adsorption part 30 which removes SOX in the gas which passed, the main fan 40 which pressurizes the gas which passed the 1st adsorption part 30, and heats gas above a dew point, and the main fan 40 Activated carbon used as a catalyst for adsorbing SOx and NOX in the second adsorption part 50 and the first adsorption part 30 and the second adsorption part 50 to remove NOX contained in the gas pumped by To the regeneration tower 60 for heating the regeneration process, the storage tank 90 for collecting the regeneration tower discharge gas discharged from the regeneration tower 60, and the regeneration tower discharge gas supplied from the storage tank 90. And a down comer 80 that neutralizes the exhaust gas of the regeneration tower by injecting tail gas.

소결기(10)로부터 배출되는 배출가스는 필터부(20)를 통과하면서 분진이 제거되고, 제1흡착부(30)를 지나면서 SOX가 제거된다.The exhaust gas discharged from the sintering machine 10 passes through the filter unit 20 to remove dust, and passes through the first adsorption unit 30 to remove SOx.

제1흡착부(30)에는 활성탄이 충진되므로 배출가스 중에 포함된 SOX가 흡착되는데, 제1흡착부(30)를 통과하는 배출가스는 산노점 이하의 온도를 유지하도록 하여 액체 상태를 이루므로 활성탄에 용이하게 흡착된다.Since activated carbon is filled in the first adsorption unit 30, SOx contained in the exhaust gas is adsorbed. The exhaust gas passing through the first adsorption unit 30 maintains a temperature below the acid dew point to form a liquid state. Adsorbed on easily.

제1흡착부(30)를 통과한 배출가스는 메인팬(40)에 의해 제2흡착부(50)로 압송되는데, 이송관 내부가 메인팬(40)에 의해 가압되므로 배출가스의 압력이 상승되면서 온도가 산노점 이상으로 상승된다.The exhaust gas passing through the first adsorption part 30 is pressurized by the main fan 40 to the second adsorption part 50. Since the inside of the transfer pipe is pressurized by the main fan 40, the pressure of the exhaust gas is increased. The temperature rises above the dew point.

산노점 이상으로 온도가 상승된 배출가스에는 암모니아가 분사되고 활성탄이 충진된 제2흡착부(50)를 통과하게 되므로 활성탄에 NOX가 흡착된다.Ammonia is injected into the exhaust gas whose temperature is raised above the acid dew point and passes through the second adsorption unit 50 filled with activated carbon, so that NOx is adsorbed to the activated carbon.

여기서, NOX를 제거하기 위해 암모니아를 분사하는 장치는 본 발명의 기술구성을 인지한 당업자가 용이하게 실시할 수 있는 기술구성이므로 구체적인 도면이나 설명은 생략하기로 한다.Here, since the apparatus for injecting ammonia to remove NOX is a technical configuration that can be easily implemented by those skilled in the art who have recognized the technical configuration of the present invention, specific drawings or descriptions will be omitted.

제2흡착부(50)를 통과한 배출가스는 SOX 및 NOX가 제거된 상태로 굴뚝(70)을 통해 대기로 배출된다.Exhaust gas passing through the second adsorption unit 50 is discharged to the atmosphere through the chimney 70 in a state in which SOX and NOX are removed.

제1흡착부(30) 및 제2흡착부(50)가 장기간 구동되어 활성탄의 흡착능력이 떨어지면 활성탄을 수거하여 재생탑(60)에 장입하고 고온의 열풍을 재생탑(60)에 공급하여 NOX를 제거한다.When the first adsorption unit 30 and the second adsorption unit 50 are driven for a long time and the adsorption capacity of the activated carbon decreases, the activated carbon is collected and charged into the regeneration tower 60, and high temperature hot air is supplied to the regeneration tower 60 to provide NOX. Remove it.

이때. 재생탑(60)에서는 SOX 성분이 농축된 재생탑 배출가스가 발생되는데, 재생탑 배출가스는 저장탱크(90)에 충진된 후에 다운커머(80)로 이동되어 중화된다.At this time. In the regeneration tower 60, a regeneration tower exhaust gas in which the SOx component is concentrated is generated, and the regeneration tower exhaust gas is moved to the downcomer 80 after being filled in the storage tank 90 to be neutralized.

다운커머(80)는 재생탑 배출가스, 세척수 및 테일가스가 혼합되는 반응탱크(82)와, 반응탱크(82)에 연결되고 세척수 및 테일가스를 반응탱크(82)에 공급하는 제1주입관(84)과, 제1주입관(84)과 비교하여 하측에 위치되도록 반응탱크(82)에 연결되고 재생탑 배출가스를 반응탱크(82)에 공급하는 제2주입관(86)을 포함한다.The downcomer 80 is a reaction tank 82 in which regeneration tower exhaust gas, washing water and tail gas are mixed, and a first injection pipe connected to the reaction tank 82 and supplying washing water and tail gas to the reaction tank 82. And a second injection pipe 86 connected to the reaction tank 82 so as to be positioned below the first injection pipe 84 and supplying the regeneration tower exhaust gas to the reaction tank 82. .

재생탑(60)에서 배출되는 재생탑 배출가스는 제2주입관(86)을 따라 반응탱크(82) 내부로 공급되고, 세척수 및 테일가스는 제1주입관(84)을 따라 반응탱크(82) 내부로 공급된다.Regeneration tower exhaust gas discharged from the regeneration tower 60 is supplied into the reaction tank 82 along the second injection pipe (86), washing water and tail gas along the first injection pipe (84) reaction tank (82) ) Is supplied internally.

제1주입관(84)은 제2주입관(86)과 비교하여 상측에 배치되므로 반응탱크(82) 내부로 주입되는 재생탑 배출가스에 세척수 및 테일가스가 분사된다.Since the first injection pipe 84 is disposed above the second injection pipe 86, the washing water and the tail gas are injected into the regeneration tower exhaust gas injected into the reaction tank 82.

반응탱크(82) 내부에는 재생탑 배출가스와 세척수와 테일가스가 반응하여 염이 생성되므로 SOX가 중화되는 효과가 나타나게 된다.In the reaction tank 82, since the salt is generated by the reaction of the regeneration tower discharge gas, the washing water, and the tail gas, the SOx is neutralized.

본 실시예의 다운커머(80)는 소결공장에 설치되는 별도의 다운커머(80)에 대하여 기재하였으며, 소결공장에 별도의 다운커머(80)를 설치하지 않고 화성공장에 코크스오븐 배출가스를 처리하는 다운커머(80)에 제2주입관(86)을 연결하여 재생탑 배출가스를 처리할 수 있다.The downcomer 80 of the present embodiment has been described with respect to the separate downcomer 80 installed in the sintering plant, and the coke oven exhaust gas treatment in the Hwaseong plant without installing a separate downcomer 80 in the sintering plant The second injection pipe 86 may be connected to the downcomer 80 to process the regeneration tower exhaust gas.

화성공장의 다운커머(80)에 제2주입관(86)이 연결될 때에는 제1주입관(84) 및 산성가스를 공급하는 주입관의 하측에 제2주입관(86)이 설치된다.When the second injection pipe 86 is connected to the downcomer 80 of the Hwaseong plant, the second injection pipe 86 is installed below the first injection pipe 84 and the injection pipe for supplying the acid gas.

이는 본 발명의 기술구성을 인지한 당업자가 용이하게 변경하여 실시할 수 있는 것이므로 다른 실시예에 대한 구체적인 도면이나 설명은 생략하기로 한다.
This can be easily changed and implemented by those skilled in the art having recognized the technical configuration of the present invention will not be described in detail drawings or description of other embodiments.

상기와 같이 구성된 본 발명의 일 실시예에 따른 소결기용 배출가스 처리방법을 살펴보면 다음과 같다.Looking at the exhaust gas treatment method for a sintering apparatus according to an embodiment of the present invention configured as described above are as follows.

도 2는 본 발명의 일 실시예에 따른 소결기용 배출가스 처리방법이 도시된 순서도이다.Figure 2 is a flow chart illustrating a waste gas treatment method for a sintering machine according to an embodiment of the present invention.

도 1 및 도 2를 참조하면, 본 발명의 일 실시예에 따른 소결기용 배출가스 처리방법은 소결기(10)의 배출가스 중에 포함된 분진을 제거하는 단계와, 활성탄을 촉매로 사용하여 배출가스 중에 포함된 SOX를 제거하는 단계와, 배출가스를 산노점 이상으로 가열하는 단계와, 활성탄을 촉매로 사용하여 가열된 배출가스 중에 포함된 NOX를 제거하는 단계와, 활성탄을 재생탑(60)에서 가열하여 재생하는 단계와, 재생탑(60)에서 배출되는 재생탑 배출가스를 저장탱크(90)에 충진하는 단계와, 저장탱크(90)에서 공급되는 재생탑 배출가스에 세척수 및 테일가스를 분사하여 재생탑 배출가스를 중화시키는 단계를 포함한다.1 and 2, the method for treating the exhaust gas for the sintering apparatus according to an embodiment of the present invention is to remove the dust contained in the exhaust gas of the sintering machine 10, and the exhaust gas using the activated carbon as a catalyst Removing the SOx contained in the gas, heating the exhaust gas above the acid dew point, removing NOX contained in the heated exhaust gas using the activated carbon as a catalyst, and activated carbon in the regeneration tower 60. Heating and regenerating, filling the storage tank 90 with the regeneration tower exhaust gas discharged from the regeneration tower 60, and spraying the washing water and tail gas to the regeneration tower exhaust gas supplied from the storage tank 90. Neutralizing the regeneration tower exhaust gas.

소결기(10)로부터 배출되는 배출가스는 필터부(20)를 통과하면서 분진이 제거되고, 제1흡착부(30)를 통과하면서 SOX가 제거되고, 메인팬(40)을 통과하면서 산노점 이상으로 가열된 후에 제2흡착부(50)를 통과하면서 NOX가 제거되어 굴뚝(70)을 통해 대기로 방출된다.The exhaust gas discharged from the sintering machine 10 removes dust while passing through the filter part 20, removes SOx while passing through the first adsorption part 30, and passes over the main dew point while passing through the main fan 40. After being heated to the NOx is removed while passing through the second adsorption portion 50 is discharged to the atmosphere through the chimney (70).

제1흡착부(30) 및 제2흡착부(50)를 통과하는 배출가스는 활성탄에 의해 SOX 및 NOX가 흡착되는데, 제1흡착부(30)를 지나는 배출가스는 산노점 이하의 온도를 유지하여 액체 상태이므로 활성탄에 용이하게 흡착된다.The exhaust gas passing through the first adsorption unit 30 and the second adsorption unit 50 is adsorbed by SOX and NOX by activated carbon, and the exhaust gas passing through the first adsorption unit 30 maintains a temperature below the acid dew point. As it is in a liquid state, it is easily adsorbed by activated carbon.

제2흡착부(50)를 통과하는 배출가스는 산노점 이상으로 가열되어 통과되므로 NOX의 특성에 의해 활성탄에 용이하게 흡착된다.Since the exhaust gas passing through the second adsorption unit 50 is heated and passed above the acid dew point, it is easily adsorbed to the activated carbon by the characteristics of NOx.

메인팬(40)에 의해 배출가스를 가열하는 단계는 배출가스를 메인팬(40)으로 압송하여 이송관 내부의 압력이 상승되도록 하므로 배출가스의 온도가 산노점 이상으로 상승되도록 한다.The heating of the exhaust gas by the main fan 40 causes the pressure of the exhaust gas to be increased to the main fan 40 so that the pressure inside the conveying pipe is increased so that the temperature of the exhaust gas is raised above the acid dew point.

제1흡착부(30) 및 제2흡착부(50)가 장기간 구동되면 활성탄의 흡착능력이 저하되므로 활성탄을 재생탑(60)에 충진시킨 후에 열풍으로 가열하여 활성탄에 흡착된 SOX 및 NOX를 활성탄으로부터 분리시켜 활성탄을 재생한다.Since the adsorption capacity of the activated carbon decreases when the first adsorption unit 30 and the second adsorption unit 50 are driven for a long time, the activated carbon is charged into the regeneration tower 60 and heated with hot air to activate SOX and NOX adsorbed on the activated carbon. Activated charcoal is regenerated from.

이때, 재생탑(60)에서는 재생탑 배출가스가 배출되는데, 재생탑 배출가스는 저장탱크(90)에 충진된 후에 일정한 압력으로 제2주입관(86)을 따라 반응탱크(82)에 공급된다.At this time, the regeneration tower discharge gas is discharged from the regeneration tower 60, and the regeneration tower discharge gas is supplied to the reaction tank 82 along the second injection pipe 86 at a constant pressure after being filled in the storage tank 90. .

제2주입관(86)의 상측에 설치되는 제1주입관(84)으로는 세척부와 테일가스가 공급되므로 반응탱크(82) 내부로 분사되는 재생탑 배출가스에 세척수와 테일가스가 분사된다.Since the washing unit and the tail gas are supplied to the first injection pipe 84 installed above the second injection pipe 86, the washing water and the tail gas are injected into the regeneration tower discharge gas injected into the reaction tank 82. .

테일가스는 NH4OH, H2SO4 및 H2SO3 중 어느 하나를 포함하여 이루어지므로 NH4OH, H2SO4 및 H2SO3와 재생탑 배출가스가 반응하여 (NH4)2SO4의 염이 생성되어 재생탑 배출가스가 중화된다.Since the tail gas includes any one of NH 4 OH, H 2 SO 4, and H 2 SO 3, NH 4 OH, H 2 SO 4, and H 2 SO 3 react with the regeneration tower exhaust gas to generate salts of (NH 4) 2 SO 4 to neutralize the regeneration tower exhaust gas.

본 실시예의 제2주입관(86)이 화성공장에 설치된 다운커머(80)에 연결되는 경우에는 제1주입관(84)을 통해 다운커머(80)를 순환하는 안수가 공급되고, 다운커머(80)에 코크스오븐 배출가스 및 산성가스가 공급된다.When the second injection pipe 86 of the present embodiment is connected to the downcomer 80 installed in the Hwaseong plant, ordination circulating the downcomer 80 is supplied through the first injection pipe 84, and the downcomer ( 80 is supplied with coke oven exhaust gas and acid gas.

이는 본 발명의 기술구성을 인지한 당업자가 용이하게 변경하여 실시할 수 있는 것이므로 다른 실시예에 대한 구체적인 도면이나 설명은 생략하기로 한다.
This can be easily changed and implemented by those skilled in the art having recognized the technical configuration of the present invention will not be described in detail drawings or description of other embodiments.

본 발명은 도면에 도시되는 일 실시예를 참고로 하여 설명되었으나, 이는 예시적인 것에 불과하며, 당해 기술이 속하는 분야에서 통상의 지식을 가진 자라면 이로부터 다양한 변형 및 균등한 타 실시예가 가능하다는 점을 이해할 것이다.While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims. .

또한, 소결기용 배출가스 처리장치 및 그 처리방법을 예로 들어 설명하였으나, 이는 예시적인 것에 불과하며, 소결기가 아닌 다른 제품에도 본 발명의 배출가스 처리장치 및 그 처리방법이 사용될 수 있다.In addition, the exhaust gas treatment apparatus for a sintering machine and its treatment method have been described as an example, but this is merely exemplary, and the exhaust gas treatment apparatus and the treatment method of the present invention may be used in other products other than the sintering machine.

따라서 본 발명의 진정한 기술적 보호범위는 아래의 특허청구범위에 의해서 정하여져야 할 것이다.
Accordingly, the true scope of the present invention should be determined by the following claims.

10 : 소결기 20 : 필터부
30 : 제1흡착부 40 : 메인팬
50 : 제2흡착부 60 : 재생탑
70 : 굴뚝 80 : 다운커머
82 : 반응탱크 84 : 제1주입관
86 : 제2주입관 90 : 저장탱크10: sintering machine 20: filter part
30: first adsorption portion 40: main fan
50: second adsorption unit 60: regeneration tower
70: chimney 80: downcomer
82: reaction tank 84: the first injection pipe
86: second injection pipe 90: storage tank

Claims (4)

소결기의 배출가스로부터 SOX 또는 NOX를 흡착한 활성탄을 가열하여 재생공정을 행하는 재생탑;
상기 재생탑에서 배출되는 재생탑 배출가스를 포집하는 저장탱크; 및
상기 저장탱크로부터 공급되는 상기 재생탑 배출가스에 세척수 및 테일가스를 분사하여 상기 재생탑 배출가스를 중화시키는 다운커머를 포함하는 것을 특징으로 하는 소결기용 배출가스 처리장치.
A regeneration tower for heating the activated carbon adsorbed SOX or NOX from the exhaust gas of the sintering machine to perform a regeneration process;
A storage tank for collecting the regeneration tower discharge gas discharged from the regeneration tower; And
And a downcomer for neutralizing the regeneration tower discharge gas by injecting washing water and tail gas into the regeneration tower discharge gas supplied from the storage tank.
제1항에 있어서, 상기 다운커머는,
상기 재생탑 배출가스, 상기 세척수 및 상기 테일가스가 혼합되는 반응탱크;
상기 반응탱크에 연결되고 상기 세척수 및 상기 테일가스를 상기 반응탱크에 공급하는 제1주입관; 및
상기 제1주입관과 비교하여 하측에 위치되도록 상기 반응탱크에 연결되고 상기 재생탑 배출가스를 상기 반응탱크에 공급하는 제2주입관을 포함하는 것을 특징으로 하는 소결기용 배출가스 처리장치.
The method of claim 1, wherein the downcomer,
A reaction tank in which the regeneration tower discharge gas, the washing water, and the tail gas are mixed;
A first injection pipe connected to the reaction tank and supplying the washing water and the tail gas to the reaction tank; And
And a second injection pipe connected to the reaction tank so as to be positioned below the first injection pipe, and supplying the regeneration tower discharge gas to the reaction tank.
(a) 소결기의 배출가스로부터 SOX 또는 NOX를 흡착한 활성탄을 재생탑에서 가열하여 재생하는 단계;
(b) 상기 재생탑에서 배출되는 재생탑 배출가스를 저장탱크에 충진하는 단계; 및
(c) 상기 저장탱크에서 공급되는 상기 재생탑 배출가스에 세척수 및 테일가스를 분사하여 상기 재생탑 배출가스를 중화시키는 단계를 포함하는 것을 특징으로 하는 소결기용 배출가스 처리방법.
(a) regenerating by heating the activated carbon adsorbed SOX or NOX from the exhaust gas of the sintering machine in a regeneration tower;
(b) filling the storage tank with the regeneration tower discharge gas discharged from the regeneration tower; And
(c) neutralizing the regeneration tower discharge gas by spraying washing water and tail gas on the regeneration tower discharge gas supplied from the storage tank.
제3항에 있어서,
상기 테일가스는 NH4OH, H2SO4 및 H2SO3 중 어느 하나를 포함하여 이루어지는 것을 특징으로 하는 소결기용 배출가스 처리방법.
The method of claim 3,
The tail gas is a waste gas treatment method for a sintering apparatus comprising any one of NH4OH, H2SO4 and H2SO3.
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KR101237084B1 (en) 2010-11-29 2013-02-25 현대제철 주식회사 Treating apparatus for waste gas in sintering machine and treating method thereof

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JP2007090320A (en) 2005-09-05 2007-04-12 Jfe Steel Kk Exhaust gas treatment equipment

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KR101237084B1 (en) 2010-11-29 2013-02-25 현대제철 주식회사 Treating apparatus for waste gas in sintering machine and treating method thereof

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