KR100388237B1 - Reduction of Sulfur Dioxide in Sintered Flue Gas_ - Google Patents

Reduction of Sulfur Dioxide in Sintered Flue Gas_ Download PDF

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Publication number
KR100388237B1
KR100388237B1 KR10-1998-0062078A KR19980062078A KR100388237B1 KR 100388237 B1 KR100388237 B1 KR 100388237B1 KR 19980062078 A KR19980062078 A KR 19980062078A KR 100388237 B1 KR100388237 B1 KR 100388237B1
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sintered
urea
flue gas
sintering
bed
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KR10-1998-0062078A
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Korean (ko)
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KR20000045519A (en
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최응수
황병운
장동석
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주식회사 포스코
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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
    • B01D53/46—Removing components of defined structure
    • B01D53/48—Sulfur compounds
    • B01D53/50—Sulfur oxides
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2251/00—Reactants
    • B01D2251/20—Reductants
    • B01D2251/206—Ammonium compounds
    • B01D2251/2067—Urea

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Biomedical Technology (AREA)
  • Environmental & Geological Engineering (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Manufacture And Refinement Of Metals (AREA)

Abstract

본 발명은 요소(Urea) 수용액을 소결베드 상에서 분무시켜 소결베드내에서 발생하는 SO2가스와 요소를 반응시켜 제철소 대기환경오염의 주 원인인 소결배가스 중의 SO2를 감소시키는 방법에 관한 것으로, 소결기(1) 후단부에 설치된 분무장치(9)를 통하여 소결 진행중에 요소 수용액을 소결베드(4)상에 분사하는 것을 특징으로 하는 구성이다.The present invention relates to a method for reducing SO 2 in sintered flue gas, which is a major source of air pollution in steelworks, by reacting urea (Urea) aqueous solution on a sintered bed to react SO 2 gas generated in the sintered bed with urea. The urea aqueous solution is sprayed onto the sintered bed 4 during the sintering process through the spraying device 9 provided at the rear end of the machine 1.

본 발명에 의하면 설비 투자비용과 운전 비용이 크게 소요되지 아니하는 간단한 장치를 이용하여 소결베드 상에 요소 수용액을 분무시키면서 소결 조업을 실시함으로써 소결 생산성과 소결광 품질에 악영향을 주지 않으면서 소결 배가스 중의 SO2성분을 크게 감소시켜 줄 수 있어서 대기 환경오염 방지에 유용하다.According to the present invention, the sintering operation is carried out by spraying urea aqueous solution onto the sinter bed by using a simple apparatus that does not require a large amount of equipment investment and operating costs, so that the SO in the sintered flue gas is not adversely affected. It can greatly reduce the two components, which is useful for preventing air pollution.

Description

소결 배가스중의 이산화황 저감방법Reduction of sulfur dioxide in sinter flue gas

본 발명은 요소(Urea) 수용액을 소결베드 상에서 분무시켜 소결베드내에서 발생하는 SO2가스와 요소를 반응시켜 제철소 대기환경오염의 주 원인인 소결배가스 중의 SO2를 감소시키는 방법에 관한 것이다.The present invention relates to a method for reducing SO 2 in sintered flue gas, which is a major cause of air pollution in steelworks, by reacting urea (Urea) aqueous solution on a sinter bed to react SO 2 gas generated in the sinter bed with urea.

도 1 도시와 같은 구조의 일반적인 드와이트-로이드(Dwight Lloyd)식 철광석 소결기(1)는, 무한궤도로 이루어진 소결기 대차(2) 위로 원료공급장치(3)를 통해 소결배합원료가 공급되며, 공급된 소결배합원료는 소결기 대차(2) 상에서 소결베드(4)를 형성하며, 소결기 대차가 점화로(5)를 통과하면서 소결베드 상부가 점화되어 연소를 통해 소결 반응이 개시된다.In the general Dwight Lloyd type iron ore sinterer 1 having a structure as shown in FIG. 1, a sintered compound raw material is supplied through a raw material supply device 3 onto a sintering machine bogie 2 formed of an endless track, The supplied sintered blend raw material forms a sintered bed 4 on the sintering machine trolley 2, and the upper part of the sintered bed is ignited as the sintering machine trolley passes through the ignition furnace 5, and the sintering reaction is started through combustion.

도 2 도시와 같이, 소결기 대차의 바닥은 공기가 통할수 있는 화격자(6)로 되어 있으며, 소결대차 하부는 주배풍관(7)을 통해 공기흡인기(8)와 연결된다.As shown in FIG. 2, the bottom of the sintering bogie is formed with a grate 6 through which air can pass, and the lower portion of the sintering bogie is connected to the air suction 8 through the main exhaust pipe 7.

공기흡인기(9)에 의해 소결기 베드 상부로부터 흡인된 공기는 소결베드(4) 내에서 소결원료와 혼합되어 있는 연료 코크스를 연소하는데 이용된다.The air sucked from the top of the sinter bed by the air aspirator 9 is used to burn fuel coke mixed with the sinter raw material in the sinter bed 4.

한편, 소결원료의 연소에 필요한 코크스는 대략 0.5∼0.6중량% 정도의 유황(S) 성분을 함유하고 있는데, 소결베드 내에서 코크스가 연소하면서 코크스에 함유된 유황도 연소되어 SO2가스를 발생시킨다.On the other hand, the coke required for combustion of the sintered raw material contains sulfur (S) component of about 0.5 to 0.6% by weight. As the coke is burned in the sintered bed, the sulfur contained in the coke is also burned to generate SO 2 gas. .

일반적으로 기존의 소결공정에서는 대략 100∼200ppm 정도의 SO2농도를 가지는 소결 배가스를 배출하는데, SO2가스는 도시 스모그 및 산성비를 유발하는 대표적인 대기 환경오염 물질로 알려져 있다.In general, in the conventional sintering process, sintered flue gas having an SO 2 concentration of about 100 to 200 ppm is emitted, and SO 2 gas is known as a representative air pollutant that causes urban smog and acid rain.

소결 배가스를 대기로 방출하기 전 선택적 촉매법이나 습식법 등을 이용하여 소결 배가스 중의 SO2농도를 저하시킬 수 있으나 투자비용과 운전비용이 막대하여 경제성이 의문시 된다.Before the sintered flue gas is discharged into the atmosphere, the SO 2 concentration in the sintered flue gas can be reduced by using a selective catalytic method or a wet method, but the investment cost and the operating cost are enormous, so the economic efficiency is questioned.

본 발명은 상기 설명한 종래기술의 소결법에서 나타나는 SO2가스 발생문제를 해결하기 위하여 이루어진 것으로, 소결베드 내에서 연료 코크스가 연소할 때 발생하는 SO2가스와 반응하여 황산염을 만들 수 있는 물질을 소결베드 내로 공급함으로써 소결 배가스중의 SO2가스를 저감시키는 방법을 제공함에 그 목적이 있다.The present invention has been made to solve the problem of SO 2 gas generation in the sintering method of the prior art described above, the sintering bed material that can form a sulfate by reacting with SO 2 gas generated when the fuel coke burns in the sintered bed The purpose is to provide a method for reducing the SO 2 gas in the sintered flue gas by feeding it into.

도 1 은 D-L식(Dwight LLoyd) 소결기의 구조를 개략적으로 도시한 도면,1 is a view schematically showing the structure of a D-L type (Dwight LLoyd) sintering machine,

도 2 는 소결기 대차부를 도시한 도면,2 shows a sintering machine bogie;

도 3 은 요소 수용액을 분사하기 위한 분무장치의 배치를 도시한 도면,3 shows the arrangement of a spray device for spraying an aqueous urea solution,

도 4 는 본 발명의 효과 입증을 위한 소결 포트 실험기를 도시한 도면,4 is a view showing a sintering pot tester for demonstrating the effect of the present invention,

도 5 는 본 발명에 의한 SO2발생량과 비교예의 분무가 없는 경우의 SO2발생량을 비교하여 나타낸 도면이다.5 is a view showing compared to SO 2 emissions in the absence of SO 2 emission and the comparative example a spray according to the present invention.

〈도면의 주요 부분에 대한 부호의 설명〉<Explanation of symbols for main parts of drawing>

1:소결기 2:소결 대차 3:원료공급장치1: sintering machine 2: sintering truck 3: raw material supply device

4:소결베드 5:점화로 6:화격자4: sinter bed 5: ignition furnace 6: grate

7:주배풍관 8:공기흡인기 10:소결포트7: Main ventilation pipe 8: Air aspirator 10: Sintering port

11:가스 분석기11: gas analyzer

상기 목적을 달성하기 위한 본 발명의 소결 배가스중의 SO2가스를 저감시키는 방법은, 소결 배가스중의 SO2량을 저감시키기 위하여, 소결기(1) 후단부에 설치된 분무장치(9)를 통하여 소결 진행중에 요소 수용액을 소결베드(4)상에 분사하는 것을 특징으로 하는 구성이다.The method for reducing the SO 2 gas in the sintered flue gas of the present invention for achieving the above object is, through the spraying device 9 provided at the rear end of the sintering machine 1 in order to reduce the amount of SO 2 in the sintered flue gas. The urea solution is sprayed onto the sintered bed 4 during the sintering process.

이하에서는 양호한 실시예와 관련하여 본 발명을 상세하게 설명한다.Hereinafter, the present invention will be described in detail with reference to the preferred embodiments.

도 3 도시와 같이 본 발명에서는 소결베드(4) 상에 간단한 구조의 분무장치(9)를 설치하여, 이를 통해 요소(NH2CONH2)수용액을 소결베드(4) 상에 분사시킨다. 분사된 에어로졸(Aerosol) 형태의 요소 수용액은 공기와 함께 소결베드(4) 내로 흡인되어 소결베드 내에서 SO2가스와 반응하게 된다. 이를 화학 반응식을 이용하여 나타내면 다음과 같다.As shown in FIG. 3, in the present invention, a spray device 9 having a simple structure is installed on the sintered bed 4, thereby spraying the aqueous solution of urea (NH 2 CONH 2 ) onto the sintered bed 4. The sprayed urea aqueous solution in the form of aerosol is drawn into the sinter bed 4 together with air and reacts with SO 2 gas in the sinter bed. This is expressed using a chemical reaction equation as follows.

S + O2→ SO2 S + O 2 → SO 2

NH2CONH2+ H2O → 2NH3+ CO2 NH 2 CONH 2 + H 2 O → 2NH 3 + CO 2

2NH3+ 2H2O → NH4OH2NH 3 + 2H 2 O → NH 4 OH

2NH4OH + SO2+ 1/2O2→ (NH4)2SO4+ CO2 2NH 4 OH + SO 2 + 1 / 2O 2 → (NH 4 ) 2 SO 4 + CO 2

NH2CONH2+ S + 3/2O2+ 2H2O → (NH4)2SO4+ CO2 NH 2 CONH 2 + S + 3 / 2O 2 + 2H 2 O → (NH 4 ) 2 SO 4 + CO 2

즉, 요소 1몰과 SO21몰이 반응하여 1몰의 암모니움 황산염을 생성시킨다. 생성된 암모니움 황산염은 대기중으로 배출되기 전에 전기집진기에 의해 대부분 포집된다.That is, one mole of urea and one mole of SO 2 react to produce one mole of ammonium sulfate. The produced ammonium sulphate is mostly captured by an electrostatic precipitator before it is released into the atmosphere.

요소는 물에 쉽게 용해되며 도 3 도시의 분무장치(9)에 의해서 미세한 입도(직경 약 0.001mm이하)의 요소 수용액으로 만들어 소결 베드(4) 내부로 분사시킨다.The urea is easily dissolved in water and sprayed into the sintered bed 4 by making the urea aqueous solution of a fine particle size (about 0.001 mm or less in diameter) by the spray device 9 shown in FIG.

이때, 분무장치(9)는 소결기(1)의 소결기의 약 3/5 정도되는 위치인 후단부에 위치하는데, 그 이유는 대략 소결기 대차(2)가 전체길이의 약 3/5 정도 전진했을 때부터 소결베드(4)가 완전 건조되어 SO2가 다량으로 발생하기 때문이다(도 1 참조).At this time, the spraying device 9 is located at the rear end, which is about 3/5 of the sintering machine of the sintering machine 1, because the sintering machine cart 2 is about 3/5 of the total length. This is because the sintered bed 4 is completely dried from the advanced state, and a large amount of SO 2 is generated (see FIG. 1).

이와 같은 방법을 통해 소량의 요소를 이용하여 막대한 시설투자비의 부담없이 효과적으로 소결배가스 중의 SO2를 제거할 수 있다.In this way, a small amount of urea can effectively remove SO 2 in the sintered flue gas without burdening enormous capital investment costs.

이하에서는 실시예와 관련하여 본발명을 보다 상세하게 설명한다.Hereinafter, the present invention will be described in more detail with reference to Examples.

실시예Example

본 발명으로 얻어지는 효과를 입증하기 위하여 도 4 도시와 같은 소결기 모사 시험장치를 이용하여 다음과 같은 실험을 행하였다.In order to prove the effect obtained by the present invention using the sintering machine simulation test apparatus as shown in Figure 4 was carried out the following experiment.

주 소결원료인 분말의 철광석과 부원료인 분말의 석회석 그리고 연료 코크스를 고루 배합한 소결 배합원료를 소결 포트(10)에 채워 넣은 후, 점화로(5)를 이용하여 배합원료층 상부를 2분간 점화하였다. 공기흡인기(8)를 작동하여 소결원료층 상부로부터 소결에 필요한 공기를 지속적으로 흡인하였으며 소결이 시작되고 약 10분 경과후 SO2가스가 발생하기 시작할 때 소결 포트(10) 상부에 설치된 분무장치(9)로부터 요소 수용액을 분사하였다.After filling the sintering pot 10 with the sintered blending material of the iron ore of the main sintering raw material, the limestone of the subsidiary powder and the fuel coke in the sintering port 10, the ignition furnace 5 is used to ignite the upper part of the blended raw material layer for 2 minutes. It was. Sprayer installed on the top of the sintering port 10 when the air suction 8 is operated to continuously suck the air necessary for sintering from the top of the sintered raw material layer, and SO 2 gas is generated after about 10 minutes after sintering starts. The aqueous urea solution was sprayed from 9).

소결 배합원료의 무게는 약 43kg이었으며 요소 90g을 물 7000cc에 완전히 용해시켜 요소 수용액을 만들었다. 소결이 진행되면서 배출되는 연소 배가스는 가스분석기(11)에 의해 포집되어 연소 배가스 중의 SO2농도가 측정되었다. 또한, 요소 수용액이 실험에 의해 얻어진 소결광의 생산성 및 품질에 미치는 영향을 조사하기 위해 소결 생산성, 품질, 회수율값을 조사하였다. 본 실험에 사용된 원료 배합안과 실험 조건은 표 1과 표 2에 각각 나타내었다.The weight of the sinter blend was about 43 kg and 90 g of urea was completely dissolved in 7000 cc of water to form an aqueous solution of urea. The combustion flue gas discharged while sintering was collected by the gas analyzer 11 and the concentration of SO 2 in the combustion flue gas was measured. In addition, in order to investigate the effect of the aqueous urea solution on the productivity and quality of the sintered ore obtained by the experiment, the sintering productivity, quality and recovery value were examined. The raw material formulations and experimental conditions used in this experiment are shown in Table 1 and Table 2, respectively.

또한, 본 실험에서 얻어진 결과를 도 5와 표 3에 나타내었다. 소결 실험 도중 요소 수용액을 분무한 본발명예의 경우, 분무하지 않은 비교예 보다 약 23% 정도 SO2가 감소한 것을 볼 수 있다. 요소 수용액을 분사하기 전에는 소결 배가스 중의 SO2평균농도가 약 90ppm 이었으나 분사후에는 약 69ppm으로 낮아졌다.In addition, the results obtained in this experiment are shown in Figure 5 and Table 3. In the present invention in which the urea aqueous solution was sprayed during the sintering experiment, it can be seen that SO 2 was reduced by about 23% compared to the comparative example without spraying. Before spraying the urea aqueous solution, the average concentration of SO 2 in the sintered flue gas was about 90 ppm, but after spraying, the concentration was lowered to about 69 ppm.

원료 및 연료Raw material and fuel 배합비(중량%)Compounding ratio (% by weight) 분말 철광석Powder iron ore 80.4280.42 석회석Limestone 12.0712.07 사문암Serpentine 2.242.24 규석burr 0.690.69 생석회quicklime 0.930.93 코크스cokes 3.653.65

소결베드 직경Sintered Bed Diameter 240mm240 mm 소결베드 높이Sintered Bed Height 48mm48 mm 점화온도Ignition temperature 1100℃1100 ℃ 공기흡인압력Air suction pressure 1500mmH2O1500 mmH 2 O 요소수용액 분사량Urea solution injection volume 600cc/min600 cc / min

한편, 표 3에 나타낸 바와같이 소결 생산성은 요소 수용액을 소결베드 상에 분무한 결과 33.89t/㎡/day 에서 37.81t/㎡/day 로 증가하였으며, 소결광 강도와 회수율은 발명예와 비교예가 큰 차이가 없었다.On the other hand, as shown in Table 3, the sintering productivity increased from 33.89t / m2 / day to 37.81t / m2 / day as a result of spraying the urea aqueous solution on the sintered bed. There was no.

구 분division 비 교 예Comparative Example 발 명 예Foot honor 소결생산성(t/㎡/day)Sintered Productivity (t / ㎡ / day) 33.8933.89 37.8137.81 소결광강도(%)Sintered Light Intensity (%) 71.0071.00 68.1368.13 소결회수율(%)Sinter Recovery Rate (%) 64.0164.01 65.8865.88

따라서 상기 설명한 바와 같이, 본 발명에 의하면 설비 투자비용과 운전 비용이 크게 소요되지 아니하는 간단한 장치를 이용하여 소결베드 상에 요소 수용액을 분무시키면서 소결 조업을 실시함으로써 소결 생산성과 소결광 품질에 악영향을 주지 않으면서 소결 배가스 중의 SO2성분을 크게 감소시켜 줄 수 있어서 대기 환경오염 방지에 유용하다.Therefore, as described above, according to the present invention, the sintering operation is performed by spraying urea aqueous solution on the sinter bed by using a simple device that does not require much equipment investment and operating costs. It is useful to prevent air pollution because it can greatly reduce the SO 2 component in the sintered flue gas.

Claims (2)

소결 배가스중의 SO2량을 저감시키기 위한 방법에 있어서, 소결기(1) 후단부에 설치된 분무장치(9)를 통하여 소결 진행중에 요소 수용액을 소결베드(4)상에 분사하는 것을 특징으로 하는 소결 배가스중의 SO2저감 방법.A method for reducing the amount of SO 2 in the sintered flue gas, characterized in that the urea aqueous solution is sprayed onto the sintering bed (4) during the sintering process through the spraying device (9) provided at the rear end of the sintering machine (1) SO 2 reduction method in sinter flue gas. 제 1 항에 있어서, 요소 수용액 분무장치는 소결기의 3/5 정도 위치에 설치되는 것을 특징으로 하는 소결 배가스중의 SO2저감 방법.The method for reducing SO 2 in sintered flue gas according to claim 1, wherein the urea aqueous spray device is installed at about 3/5 of the sintering machine.
KR10-1998-0062078A 1998-12-30 1998-12-30 Reduction of Sulfur Dioxide in Sintered Flue Gas_ KR100388237B1 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20010011171A (en) * 1999-07-26 2001-02-15 이구택 Manufacturing method of sinter ore with reducing sulfur-oxide in discharged gas

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CN114797441A (en) * 2022-05-11 2022-07-29 秦皇岛新特科技有限公司 Clinker production device

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS548103A (en) * 1977-06-22 1979-01-22 Mitsubishi Heavy Ind Ltd Decreasing method for nitrogen oxides cischarged from sintering machine
JPS5420904A (en) * 1977-07-15 1979-02-16 Sumitomo Heavy Ind Ltd Sintering equipment with addition quick lime and circulation of exhaust gas
EP0378877A1 (en) * 1988-12-24 1990-07-25 METALLGESELLSCHAFT Aktiengesellschaft Process for reducing the SOx-emissions in the waste gas of sinter plants
KR970043193A (en) * 1995-12-23 1997-07-26 김종진 Reduction of sulfur dioxide gas in flue gas during sintering ore production

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS548103A (en) * 1977-06-22 1979-01-22 Mitsubishi Heavy Ind Ltd Decreasing method for nitrogen oxides cischarged from sintering machine
JPS5420904A (en) * 1977-07-15 1979-02-16 Sumitomo Heavy Ind Ltd Sintering equipment with addition quick lime and circulation of exhaust gas
EP0378877A1 (en) * 1988-12-24 1990-07-25 METALLGESELLSCHAFT Aktiengesellschaft Process for reducing the SOx-emissions in the waste gas of sinter plants
KR970043193A (en) * 1995-12-23 1997-07-26 김종진 Reduction of sulfur dioxide gas in flue gas during sintering ore production

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20010011171A (en) * 1999-07-26 2001-02-15 이구택 Manufacturing method of sinter ore with reducing sulfur-oxide in discharged gas

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