KR100899522B1 - Solution Reagent Of Using Stock Farm Excretions and Method for producing the same - Google Patents
Solution Reagent Of Using Stock Farm Excretions and Method for producing the same Download PDFInfo
- Publication number
- KR100899522B1 KR100899522B1 KR1020070009388A KR20070009388A KR100899522B1 KR 100899522 B1 KR100899522 B1 KR 100899522B1 KR 1020070009388 A KR1020070009388 A KR 1020070009388A KR 20070009388 A KR20070009388 A KR 20070009388A KR 100899522 B1 KR100899522 B1 KR 100899522B1
- Authority
- KR
- South Korea
- Prior art keywords
- solution
- reducing
- manure
- catalyst
- urea
- Prior art date
Links
Images
Classifications
-
- 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
- B01D53/54—Nitrogen compounds
- B01D53/56—Nitrogen 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/40—Nitrogen compounds
- B01D2257/402—Dinitrogen oxide
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/40—Nitrogen compounds
- B01D2257/404—Nitrogen oxides other than dinitrogen oxide
-
- 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
- Y02C—CAPTURE, STORAGE, SEQUESTRATION OR DISPOSAL OF GREENHOUSE GASES [GHG]
- Y02C20/00—Capture or disposal of greenhouse gases
- Y02C20/10—Capture or disposal of greenhouse gases of nitrous oxide (N2O)
Landscapes
- 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)
- Treatment Of Sludge (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
- Catalysts (AREA)
Abstract
본 발명은 선택적 무촉매, 촉매 혼합 환원 공정에 사용되는 환원용액 제재에 관한 것으로서, 더욱 상세하게는 축산분뇨를 이용하여 무촉매, 촉매 혼합 환원 용액제재를 제조하는 방법에 관한 것이다. 축산분뇨 추출용액에 소량의 요소[(NH2)2 CO]를 첨가하여 환원용액제재를 제조하고 고온영역에 분사함으로서 분뇨폐액에 포함된 다양한 유기물과 금속성분의 상승작용으로 연소가스 내에 포함된 질소산화물을 효율적으로 제거하는 것이다. 분사온도 800~900℃ 영역과 같이 요소용액만으로는 질소산화물의 저감반응이 일어나지 않는 구간에서 높은 질소산화물 저감효율을 얻을 수 있으며 동시에 일정량 이상의 암모니아 가스의 배출을 유도하여 후단에 설치된 선택적 촉매 환원 공정에서 추가적인 질소산화물 저감을 얻을 수 있다.The present invention relates to a reducing solution preparation used in a selective non-catalyst, catalyst mixed reduction process, and more particularly, to a method for preparing a non-catalyst, catalyst mixed reduction solution preparation using livestock manure. Nitrogen oxides contained in the combustion gas due to synergistic action of various organic substances and metals contained in manure waste by adding a small amount of urea [(NH2) 2 CO] to the livestock manure extract solution and spraying them in a high temperature zone. Is to remove it efficiently. It is possible to obtain high nitrogen oxide reduction efficiency in the section where nitrogen oxide reduction reaction does not occur with the urea solution alone, such as the injection temperature range of 800 ~ 900 ℃ and at the same time, it induces the discharge of a certain amount of ammonia gas. Nitrogen oxide reduction can be obtained.
질소 산화물, 요소, 선택적 무촉매 Nitric oxide, urea, selective non-catalyst
Description
도 1은 계분 추출용액을 이용하여 제조한 환원용액제재의 질소산화물 저감 효과와 암모니아 슬립을 반응온도에 따라 도시한 그래프이다. 1 is a graph showing the effect of reducing nitrogen oxides and ammonia slip of a reducing solution prepared using a powdered extract solution according to reaction temperature.
본 발명은 선택적 무촉매, 촉매 혼합 환원 공정에 사용되는 환원용액 제재에 관한 것으로서, 더욱 상세하게는 축산분뇨를 이용하여 무촉매, 촉매 혼합 환원 용액제재를 제조하는 것에 관한 것이다. The present invention relates to a reducing solution preparation for use in a selective non-catalyst, catalyst mixed reduction process, and more particularly, to preparing a non-catalyst, catalyst mixed reduction solution preparation using livestock manure.
삭제delete
배기가스에 함유된 질소산화물(NOX)은 90% 이상의 일산화질소와 이산화질소 및 아산화질소로 구성되며 지구온난화와 대기오염을 유발하는 대표적인 환경오염물질이다. 아산화질소는 지구 온난화의 주원인 물질중의 하나이며, 일산화질소는 산성비의 원인물질로 작용되며 도시 스모그를 유발하고 사람의 호흡기에 흡수되어 기관지 염증과 고농도 노출시 사망에 이르게 할 수 있는 유해 성분이다. 질소산화물은 화석연료의 고온 연소시 발생 되며 이에 따라, 질소산화물 제어 기술도 연소조건을 제어하여 배출 농도를 저감하는 방법과 연소 후 연돌로 배출되기전에 효과적으로 후처리를 하여 제어하는 기술로 구분된다. 연소조건을 제어하는 방법의 경우 저감 농도의 한계와 강화되는 배출 허용기준으로 인하여 효과적인 제어방법으로 고려되지 않고 있으며 연소 후처리 기술인 촉매를 이용한 선택적 촉매환원법과 촉매를 이용하지 않는 선택적 무촉매 환원법, 두 가지가 가장 일반적으로 사용되는 기술로 알려져있다. Nitrogen oxide (NOX) contained in exhaust gas is composed of more than 90% nitrogen monoxide, nitrogen dioxide and nitrous oxide and is a representative environmental pollutant that causes global warming and air pollution. Nitrous oxide is one of the main sources of global warming. Nitrogen monoxide acts as a causative agent of acid rain and is a harmful component that can cause urban smog and be absorbed by the human respiratory tract, resulting in bronchial inflammation and death at high concentrations. Nitrogen oxides are generated during high-temperature combustion of fossil fuels, and accordingly, the nitrogen oxide control technology is also classified into a method of controlling combustion conditions to reduce emission concentrations and a technique of effectively post-processing before being discharged into the stack after combustion. The method of controlling the combustion conditions is not considered as an effective control method due to the limit of the reduced concentration and the increased emission limit, and the selective catalytic reduction method using the catalyst which is the post-combustion treatment technology and the selective non-catalytic reduction method without the catalyst are used. Eggplant is known as the most commonly used technique.
선택적 무촉매 환원법은 950 ~ 1,000℃의 고온영역에 암모니아[미국특허 제 3,900,554호]나 요소 수용액[미국특허 제4,119,702호, 미국특허 제4,208,386호]을 직접 분사하여 라디칼 반응을 통하여 질소산화물을 무해한 질소와 수증기로 전환시켜 저감하는 기법이다. 촉매를 이용하는 선택적 촉매환원법은 촉매표면의 활성점에서 환원제의 흡착과 질소 산화물간의 반응을 유도하여 무해한 질소와 수증기로 전환시키는 방법으로 효율은 촉매를 사용하는 선택적 촉매환원법이 우수하지만 고가의 촉매를 사용하므로 경제적으로는 선택적 무촉매 환원법이 우수하다. Selective non-catalytic reduction method directly injects ammonia [US Pat. It is a technique to reduce by converting to water vapor. The selective catalytic reduction method using a catalyst induces a reaction between a reducing agent and a nitrogen oxide and converts it into harmless nitrogen and water vapor at the active surface of the catalyst. Therefore, it is economically excellent in the selective catalytic reduction method.
선택적 무촉매 환원 후에 선택적 촉매 환원이 이어지는 선택적 무촉매, 촉매 혼합 환원공정은[미국특허 제 5,853,683호, 미국특허 제 6,146,605호] 선택적 촉매 환원 보다 적은 비용으로 유사한 질소산화물 제거효율을 얻을 수 있다. 선택적 무촉매, 촉매 혼합 환원공정은 선택적 무촉매 환원공정의 운전온도 범위인 950-1,050℃ 보다 낮은 850-950℃ 사이에 당량비 보다 높은 과량의 요소용액을 분사하여 일정부분의 질소산화물 제거효율을 얻고 잉여의 요소는 암모니아로 전환되어 후단의 촉매환원 반응기에서 추가적인 질소산화물 제거효율을 얻게 된다. 그러나 850-950℃ 사이의 낮은 온도에서는 요소분해에 의한 질소산화물의 환원보다는 암모니아 생성이 과다하게 유도되고, 높은 온도에서는 질소산화물의 환원효율은 증가하지만 암모니아의 생성이 감소하여 무촉매, 촉매 혼합공정으로의 기능이 감소하게 된다. 이 문제를 해결하기 위해서는 낮은 온도에서도 선택적 무촉매 환원공정의 질소산화물 제거효율을 향상시키며 동시에 암모니아 슬립을 유도할수 있어야 할 것이다. The selective noncatalytic, catalytic mixed reduction process followed by selective catalytic reduction followed by selective catalytic reduction [US Pat. No. 5,853,683, US Pat. No. 6,146,605] can achieve similar nitrogen oxide removal efficiencies at less cost than selective catalytic reduction. Selective non-catalyst, catalyst mixed reduction process injects excess urea solution higher than equivalence ratio between 850-950 ℃ lower than 950-1,050 ℃ operating temperature range of selective non-catalytic reduction process to obtain a certain portion of nitrogen oxide removal efficiency The excess urea is converted to ammonia to obtain additional nitrogen oxide removal efficiency in the subsequent catalytic reduction reactor. However, at low temperatures between 850 and 950 ° C, ammonia production is induced more than reduction of nitrogen oxides by urea decomposition. At high temperatures, the reduction efficiency of nitrogen oxides is increased, but the production of ammonia is reduced. This reduces the function of. In order to solve this problem, it is necessary to improve the NOx removal efficiency of the selective non-catalytic reduction process even at low temperature and at the same time induce ammonia slip.
반응온도 영역을 넓히는 종래의 방법으로는, 요소 수용액 분사와 함께 기상첨가제를 사용하는 방법[WO 91/17814], 액상첨가제로 알콜, 설탕, 케톤을 주입하는 방법[WO 91/17814], 암모늄 이온을 포함하는 암모늄 카바메이트를 환원제로 사용하는 방법[미국특허 제4,997,631호], 첨가제로서 KOH, NaOH를 이용하는 방법[미국특허 제5,543,123호] 등이 제시되었다. 첨가제를 사용하는 방법으로는 암모니아 수용액을 사용하며 수용액에 암모늄 카보네이트, 암모늄 옥살레이트 등을 액상첨가제로 사용하고 기상 첨가제로는 수소, 일산화탄소, 탄화수소를 사용하는 방법[미국특허 제3,900,554호]이 있고, 과산화수소수를 이용하는 방법[미국특허제4,777,024호]이 있다. 그러나, 상기와 같은 종래의 방법들은 대부분 첨가제의 가격이 고가이며 광범위한 온도범위에서 높은 저감 효율을 나타내지 못하거나 암모니아의 발생이 효율적이지 못하다는 단점으로 개선의 여지가 있었다.Conventional methods for widening the reaction temperature range include the use of gaseous additives with the injection of aqueous urea solution [WO 91/17814], the injection of alcohols, sugars, ketones with liquid additives [WO 91/17814], and ammonium ions. A method of using an ammonium carbamate comprising a as a reducing agent [US Patent No. 4,997,631], a method using KOH, NaOH as an additive [US Patent No. 5,543, 123] and the like have been proposed. As a method of using an additive, an aqueous ammonia solution is used, and an aqueous solution using ammonium carbonate, ammonium oxalate, etc. as a liquid additive, and a gaseous additive using hydrogen, carbon monoxide, and a hydrocarbon [US Patent No. 3,900,554], There is a method using hydrogen peroxide [US Pat. No. 4,777,024]. However, the conventional methods as described above have room for improvement due to the disadvantage that most of the additives are expensive and do not exhibit high reduction efficiency over a wide temperature range or that ammonia is not generated efficiently.
이에, 본 발명자들은 상기한 문제점들을 해결하여, 보다 넓은 온도범위에서 높은 NOx 저감율을 유지하며 동시에 암모니아 슬립을 유도하는 저렴한 가격의 질소산화물 저감용 환원제를 개발하기 위하여 연구한 결과 폐기물로 처리되어야 하는 분뇨를 이용하여 환원용액제재를 추출하고 이에 소량의 요소를 첨가하면, 요소의 분해에 의하여 발생되는 OH 라디칼의 형성을 보다 낮은 온도에서도 가능하게 하여 저온에서도 질소산화물 제거효율이 급격히 향상되고 암모니아 슬립도 요소만을 사용한 경우보다 향상됨을 알 수 있었다. 이에 폐기물처리나 폐수처리 문제를 유발하는 분뇨를 선택적 무촉매, 촉매 혼합 환원공정을 위한 효과적인 질소산화물 제거용 환원용액제재로 활용할 수 있도록 본 발명을 완성하였다. Therefore, the present inventors have solved the above problems, while maintaining a high NOx reduction rate in a wider temperature range and at the same time to develop an inexpensive reducing agent for reducing nitrogen oxides inducing ammonia slip, manure to be treated as waste Extraction of the reducing solution using and the addition of a small amount of urea enables the formation of OH radicals generated by decomposition of urea at a lower temperature, which dramatically improves the removal efficiency of nitrogen oxides at low temperatures, It can be seen that the improvement compared to using only. Accordingly, the present invention has been completed to utilize the manure causing waste treatment or wastewater treatment as an effective solution for removing nitrogen oxides for selective non-catalyst and catalytic mixed reduction process.
따라서, 본 발명은 종래와 달리 질소산화물의 저감효율을 증대시키고 반응 온도영역을 넓히기 위하여 폐기물처리나 폐수처리 문제를 유발하는 분뇨를 이용하여 넓은 온도영역에서 질소산화물 저감효과가 우수하고 암모니아 슬립이 유도되도록 개선된 환원제를 제공하는데 그 목적이 있다.Accordingly, the present invention is excellent in reducing nitrogen oxides in a wide temperature range and inducing ammonia slip by using manure that causes waste treatment or wastewater treatment problems in order to increase the reduction efficiency of nitrogen oxides and widen the reaction temperature range. The purpose is to provide a reducing agent as improved as possible.
삭제delete
본 발명은 축산분뇨 추출용액에 소량의 요소[(NH2)2CO]를 첨가하여 분뇨 폐액에 포함된 다양한 유기물과 금속성분의 상승작용으로 질소산화물 제거효율을 향상시키고, 800~900℃와 같이 요소 용액만으로는 질소 산화물의 저감 반응이 일어나지 않는 구간에서도 일정량 이상의 제거 효율과 암모니아 슬립을 유도하여 후단에서 선택적 촉매 반응을 가능하게 하는 선택적 무촉매 공정 단독 운영보다 높은 제거효율을 유도하여 폐기물 소각로, 발전소와 같은 질소산화물 배출시설의 배출농도를 효과적으로 저감시킬수 있는 분뇨 폐기물을 이용한 질소산화물 저감 환원용액 제재의 제조에 관한 것이다.
특히, 본 발명은 선택적 무촉매, 촉매 혼합 환원공정에 사용되는 질소산화물 저감용 환원제재에 있어서, 생물체의 분뇨를 이용하여 추출한 용액을 주성분으로하는 것을 특징으로 한다.
상기 생물체의 분뇨를 이용하여 추출한 용액으로는 계분을 이용하여 추출한 용액을 주성분으로 하는 것이 바람직하다. 본 발명에 따른 환원용액제재는 상기 생물체의 분뇨 추출액 1 ~ 95중량%에 물 10 ~ 90중량%; 및 요소 5 ~ 50중량%를 혼합한 것이 특징이다.
또한, 상기 환원용액제재의 분사 구간온도는 700 - 1,000℃가 바람직하고, 산소농도가 4-15% 영역에서 분무되는 것을 특징으로 한다. The present invention adds a small amount of urea [(NH 2 ) 2 CO] to the livestock manure extract solution to improve the nitrogen oxide removal efficiency by synergistic action of various organic substances and metals contained in the waste manure solution, such as 800 ~ 900 ℃ The urea solution alone induces higher removal efficiency and ammonia slip even in a section where the nitrogen oxide reduction reaction does not occur. The present invention relates to the manufacture of a reducing solution for reducing nitrogen oxides using manure waste, which can effectively reduce the emission concentration of the same nitrogen oxide discharge facility.
In particular, the present invention is characterized in that, in the reducing agent for reducing nitrogen oxides used in the selective non-catalyst and catalyst mixed reduction process, the main component is a solution extracted using the manure of the organism.
As a solution extracted by using the manure of the organism, it is preferable that the solution extracted by using system powder as a main component. Reducing solution preparation according to the present invention 10 to 90% by weight of water in the manure extract 1 ~ 95% by weight of the organism; And 5 to 50% by weight of urea.
In addition, the injection section temperature of the reducing solution material is preferably 700-1,000 ℃, characterized in that the spraying in the oxygen concentration of 4-15% region.
즉, 본 발명은 분뇨 폐기물을 이용하여 추출한 용액을 주성분으로 하고, 여기에 요소성분을 첨가한 질소산화물 저감용 환원제에 있어서, 환원용액제재 전체 중량중 생물체의 분뇨 추출액 함량(즉, 계분 추출액 함량)이 1-95중량% 사이인 것을 특징으로 한다. That is, in the present invention, the solution extracted by using the manure waste as a main component, in the reducing agent for reducing nitrogen oxides to which the urea component is added, the content of the manure extract of the organism in the total weight of the reducing solution material (that is, the content of poultry extract) It is characterized by being between 1-95 weight%.
이와 같은 본 발명을 더욱 상세히 설명하면 다음과 같다. Referring to the present invention in more detail as follows.
본 발명은 연소장치에서 발생되는 질소산화물을 저감하기 위하여 분뇨 추출액에 소량의 요소를 첨가하여 제조한 환원용액제재를 연소장치내에 투입함으로써 800-900℃와 같이 기존의 환원용액제재를 적용하기에는 낮은 반응온도 구간에서도 높은 질소산화물 제거효율을 얻으며 일정량의 암모니아 슬립을 유도할 수 있는 질소산화물 저감용 환원제에 관한 것이다. The present invention is a low reaction to apply the existing reducing solution material such as 800-900 ℃ by injecting the reducing solution material prepared by adding a small amount of urea to the manure extract in the combustion device to reduce the nitrogen oxide generated in the combustion device The present invention relates to a reducing agent for reducing nitrogen oxide, which can obtain a high nitrogen oxide removal efficiency even at a temperature range and can induce a certain amount of ammonia slip.
본 발명에 따른 질소산화물 저감용 환원제재를 그 제조방법에 따라 더욱 구체화하여 설명하면 다음과 같다. Reducing material for reducing nitrogen oxides according to the present invention will be described in more detail according to the production method as follows.
먼저, 생물체의 분뇨 추출액을 제조하기 위하여 계분을 1 ∼ 50 중량%로 물과 혼합하여 반응온도 24시간 교반기를 이용하여 교반한다. 교반이 종결된 슬러리를 감압 필터링을 하여 부유물이 없는 추출액을 얻는다. 추출액의 함량을 1~95 중량%로 변화시키고, 물은 10 ∼ 90중량%, 요소는 5 ∼ 50중량%로 조절하여 최종 환원용액제재를 완성한다. First, in order to prepare the manure extract of the organism, the system powder is mixed with water at 1 to 50% by weight and stirred using a stirrer for a reaction temperature of 24 hours. The slurry after stirring was filtered under reduced pressure to obtain an extract free of suspended solids. The content of the extract is changed to 1 to 95% by weight, water is adjusted to 10 to 90% by weight, and urea is 5 to 50% by weight to complete the final reducing solution.
따라서, 본 발명에 따른 질소산화물 저감용 환원제재는 분뇨폐기물에서 추출한 유효성분과 소량의 요소를 이용하여 온도구간 750 ∼ 950℃ 구간에서 효과적인 질소산화물의 저감을 가능하게 할 수 있어 환경오염 제어에 소요되는 비용을 절감할 수 있을 뿐만 아니라 폐기물에 의한 토양이나 수질오염과 같은 이차 오염을 줄일수 있어 환경오염 방지에 매우 효과적으로 대처할 수 있다. Therefore, the reducing agent for reducing nitrogen oxides according to the present invention can effectively reduce the nitrogen oxide in the temperature range of 750 ~ 950 ℃ using an active ingredient and a small amount of elements extracted from the waste manure waste is required for environmental pollution control In addition to reducing costs, it is possible to reduce secondary pollution such as soil and water pollution caused by waste, which can effectively cope with environmental pollution.
이하, 본 발명을 실시예에 근거하여 더욱 상세하게 설명하겠는바, 본 발명이 실시예에 의하여 한정되는 것은 아니다. Hereinafter, the present invention will be described in more detail with reference to Examples, but the present invention is not limited by Examples.
<실시예><Example>
계분과 물의 비율을 1:1로 조절한 후 상온에서 24시간 동안 공기와 접촉하지 않도록 밀폐를 유지하며 교반하였다. 교반과정이 종결되면 용액을 300㎛의 메쉬(mesh)로 여과한 후 여과액을 다시 원심분리기로 1,800rpm으로 20분간 작동시킨 후, 상등액을 취하여 계분 추출원액을 제조하였다. 계분 추출원액과 요소를 질량비 95:5로 혼합하여 최종 질소산화물 환원용액제재를 제조하여 연소로를 모사한 반응기에서 본 발명의 효과를 시험하였다. 사용된 장치의 구성은 다음과 같다. 반응기는 직경 0.2m, 길이 6m의 고온내화재(Castable)와 SS304 도관으로 제작되었으며 LPG버너를 사용하여 반응기 내부의 온도를 제어하였다. 반응기 내부에서 배연가스와 질소산화물을 공급하고 반응기 측면으로 노즐을 설치하여 질소산화물 환원용액제재를 분무하였다. 반응이 종결된 배연가스는 시료채취관을 통하여 흡입한 후 가스분석기를 이용하여 농도의 변화를 측정하였다. 여기서는, 질소산화물 농도는 500 ppm으로 조절하였고 반응온도는 800 ∼ 1,000℃ 가 되도록 변화시켜 제조된 환원제재를 분사하고, 저감율과 암모니아 슬립을 측정하여 도 1에 나타내었다.After adjusting the ratio of the system to water at 1: 1, the mixture was stirred while keeping it in contact with air at room temperature for 24 hours. After the stirring was terminated, the solution was filtered through a 300 μm mesh, and the filtrate was again operated at 1,800 rpm for 20 minutes using a centrifuge. The effect of the present invention was tested in a reactor that simulated a combustion furnace by preparing a final nitrogen oxide reducing solution material by mixing the system extract extraction stock solution and urea in a mass ratio of 95: 5. The configuration of the apparatus used is as follows. The reactor was made of 0.2m diameter, 6m long, high temperature resistant (Castable) and SS304 conduit, and LPG burner was used to control the temperature inside the reactor. Flue gas and nitrogen oxide were supplied from inside the reactor, and a nozzle was installed at the side of the reactor to spray nitrogen oxide reduction solution. After completing the reaction, the flue gas was sucked through the sampling tube, and the change in concentration was measured using a gas analyzer. Here, the concentration of nitrogen oxide was adjusted to 500 ppm and the reaction temperature was changed to 800 ~ 1,000 ℃ sprayed reducing agent prepared, and the reduction rate and ammonia slip was measured and shown in Figure 1.
<비교예>Comparative Example
물 95g과 요소 5g을 이용하여 환원용액제재를 제조하여 상기 실시예와 동일한 조건으로 환원용액제재를 분사하여 얻은 결과를 도 1 에 나타내었다.
도 1을 참조하면, 750 ~ 950℃의 반응온도 구간에서 실시예의 환원용액제재가 비교예의 환원용액제재에 비해 우수한 NOx 저감율과 암모니아 슬립 현상을 나타냄을 알 수 있다. A reducing solution was prepared using 95 g of water and 5 g of urea, and the result obtained by spraying the reducing solution with the same conditions as in the above example is shown in FIG. 1.
Referring to Figure 1, it can be seen that in the reaction temperature range of 750 ~ 950 ℃ the reducing solution material of the example shows a superior NOx reduction rate and ammonia slip phenomenon compared to the reducing solution material of the comparative example.
상술한 바와 같이, 본 발명에 따른 질소산화물 저감용 환원용액제재는 분뇨폐기물에서 추출한 용액에 일정량의 요소를 추가하여 제조한 것으로, 분뇨추출액내의 금속성분과 유기물이 요소와 상승작용을 일으켜 750℃ ~ 950℃와 같은 저온에서도 라디칼 반응을 화학적으로 촉진하고 암모니아 슬립을 유도하여 선택적 무촉매, 촉매 혼합 환원을 이용한 고효율의 질소산화물 저감 효과를 얻을 수 있다. As described above, the reducing solution preparation for reducing nitrogen oxides according to the present invention is prepared by adding a certain amount of urea to a solution extracted from manure waste, and the metal components and organic matter in the manure extract have a synergistic effect with urea. Even at low temperatures such as 950 ° C, radical reactions are chemically promoted and ammonia slip can be induced to achieve high efficiency of nitrogen oxide reduction using selective non-catalyst and mixed catalyst reduction.
본 발명은 축산 분뇨와 같은 폐기물을 이용하여 유효성분을 추출해냄으로써 경제적이며 동시에 부가적인 환경 오염을 방지할 수 있는 질소산화물 환원용액제재로, 각종 산업시설의 NOx 정화용 환원제로 널리 활용될 수 있다.The present invention is a nitrogen oxide reduction solution material that can be economically and at the same time prevent additional environmental pollution by extracting the active ingredient using waste such as livestock manure, can be widely used as a reducing agent for NOx purification of various industrial facilities.
Claims (5)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020070009388A KR100899522B1 (en) | 2007-01-30 | 2007-01-30 | Solution Reagent Of Using Stock Farm Excretions and Method for producing the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020070009388A KR100899522B1 (en) | 2007-01-30 | 2007-01-30 | Solution Reagent Of Using Stock Farm Excretions and Method for producing the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR20080071318A KR20080071318A (en) | 2008-08-04 |
| KR100899522B1 true KR100899522B1 (en) | 2009-05-26 |
Family
ID=39882113
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1020070009388A KR100899522B1 (en) | 2007-01-30 | 2007-01-30 | Solution Reagent Of Using Stock Farm Excretions and Method for producing the same |
Country Status (1)
| Country | Link |
|---|---|
| KR (1) | KR100899522B1 (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR19990007067A (en) * | 1997-06-20 | 1999-01-25 | 루돌프 프라이, 부르노 안드레올리 | Denitrification method of combustion exhaust |
| KR20010055210A (en) * | 1999-12-10 | 2001-07-04 | 주대성 | A Treatment Method for Livestock Wastewater |
| KR20020009353A (en) * | 2000-07-26 | 2002-02-01 | 김명환 | Complex Catalysts Used For Removing Nitrogen Oxides And Other Harmful Materials Among Flue Gases And Method For Preparing The Sames |
| KR100686650B1 (en) | 2005-11-17 | 2007-02-26 | 유경선 | Development of reagent solution and additives for the removal of nitric oxides in flue gases using manure waste |
-
2007
- 2007-01-30 KR KR1020070009388A patent/KR100899522B1/en not_active IP Right Cessation
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR19990007067A (en) * | 1997-06-20 | 1999-01-25 | 루돌프 프라이, 부르노 안드레올리 | Denitrification method of combustion exhaust |
| KR20010055210A (en) * | 1999-12-10 | 2001-07-04 | 주대성 | A Treatment Method for Livestock Wastewater |
| KR20020009353A (en) * | 2000-07-26 | 2002-02-01 | 김명환 | Complex Catalysts Used For Removing Nitrogen Oxides And Other Harmful Materials Among Flue Gases And Method For Preparing The Sames |
| KR100686650B1 (en) | 2005-11-17 | 2007-02-26 | 유경선 | Development of reagent solution and additives for the removal of nitric oxides in flue gases using manure waste |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20080071318A (en) | 2008-08-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106215652B (en) | A kind of the combination denitrating system and method for aluminium oxide calcining flue gas | |
| US9308496B2 (en) | System and method for controlling and reducing NOx emissions | |
| CN104226301A (en) | Preparation method of rare-earth-based composite multi-component denitrification and dioxin removal catalyst | |
| US20140165888A1 (en) | SIMULTANEOUS TREATMENT OF FLUE GAS WITH SOx ABSORBENT REAGENT AND NOx REDUCING AGENT | |
| CN103007753A (en) | Heterogeneous Fenton reagent and preparation method and application thereof | |
| CN101632897B (en) | Method for simultaneously removing sulfur oxides and nitric oxides in flue gas | |
| WO2015039019A1 (en) | Treatment of nitrogen oxides in flue gas streams | |
| WO1997001388A1 (en) | Flue-gas treatment system | |
| KR101567746B1 (en) | Apparatus for treating exhaust gas | |
| CN102188889B (en) | Device and method for combined removal of sulphur dioxide (SO2), nitrogen oxide (NOX) and mercury from fume | |
| CN107261805B (en) | Hydrazine solution special for chimney flue gas desulfurization and denitrification and preparation method thereof | |
| CN105126564B (en) | The method and apparatus of flue gas and desulfurizing and denitrifying | |
| CN104324610B (en) | A kind of desulfurization denitration method and device | |
| KR100686650B1 (en) | Development of reagent solution and additives for the removal of nitric oxides in flue gases using manure waste | |
| KR101774254B1 (en) | Selective non-catalytic reduction solution for nitrogen oxides removal | |
| KR100899522B1 (en) | Solution Reagent Of Using Stock Farm Excretions and Method for producing the same | |
| CN208553761U (en) | A kind of the denitrating flue gas unit and device of charged spray ammonia and ammonolysis craft combination | |
| KR20080059958A (en) | Simultaneous flue gas desulfurization and denitrification with ozone and active coke | |
| CN109316941A (en) | The equipment for denitrifying flue gas and its method of denitration of ozone combination urea combination SNCR | |
| KR20070052389A (en) | Nox reducing solution reagent using wastewater and sewage | |
| US20120070354A1 (en) | Scrubbing a gas containing nitrogen oxides | |
| KR100891231B1 (en) | Reduction Reagent Solution For Restricting Production of Nitrous Oxide | |
| KR102122253B1 (en) | Apparatus for treating exhaust gas | |
| KR20080071324A (en) | Nox reducing solution reagent using sewage sludge extrants in a sewage and wastewater treatment process | |
| CN104492441B (en) | Method for treating purge gas containing nitrogen oxide |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A201 | Request for examination | ||
| E902 | Notification of reason for refusal | ||
| E701 | Decision to grant or registration of patent right | ||
| GRNT | Written decision to grant | ||
| FPAY | Annual fee payment |
Payment date: 20120816 Year of fee payment: 4 |
|
| LAPS | Lapse due to unpaid annual fee |