KR100673303B1 - 폐 탈질 촉매의 성능평가 및 재생방법 - Google Patents
폐 탈질 촉매의 성능평가 및 재생방법 Download PDFInfo
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- KR100673303B1 KR100673303B1 KR1020040065225A KR20040065225A KR100673303B1 KR 100673303 B1 KR100673303 B1 KR 100673303B1 KR 1020040065225 A KR1020040065225 A KR 1020040065225A KR 20040065225 A KR20040065225 A KR 20040065225A KR 100673303 B1 KR100673303 B1 KR 100673303B1
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- catalyst
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- waste denitrification
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- 239000003054 catalyst Substances 0.000 title claims abstract description 105
- 239000002699 waste material Substances 0.000 title claims abstract description 39
- 238000011069 regeneration method Methods 0.000 title claims abstract description 37
- 238000011156 evaluation Methods 0.000 title abstract description 13
- 238000000034 method Methods 0.000 claims abstract description 41
- 230000008929 regeneration Effects 0.000 claims abstract description 36
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 claims abstract description 34
- 230000003197 catalytic effect Effects 0.000 claims abstract description 18
- 238000006243 chemical reaction Methods 0.000 claims abstract description 11
- 238000010438 heat treatment Methods 0.000 claims description 15
- 238000004458 analytical method Methods 0.000 claims description 11
- 239000013078 crystal Substances 0.000 claims description 10
- 238000005406 washing Methods 0.000 claims description 10
- 239000011148 porous material Substances 0.000 claims description 9
- 230000000694 effects Effects 0.000 claims description 8
- 239000003637 basic solution Substances 0.000 claims description 7
- 238000009616 inductively coupled plasma Methods 0.000 claims description 7
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical group O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 6
- 229910001385 heavy metal Inorganic materials 0.000 claims description 6
- 239000003929 acidic solution Substances 0.000 claims description 5
- 239000004480 active ingredient Substances 0.000 claims description 5
- 239000012535 impurity Substances 0.000 claims description 5
- 239000007789 gas Substances 0.000 claims description 4
- 230000001172 regenerating effect Effects 0.000 claims description 4
- 239000012153 distilled water Substances 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 239000012159 carrier gas Substances 0.000 claims description 2
- 230000007423 decrease Effects 0.000 claims description 2
- 238000001035 drying Methods 0.000 claims description 2
- 230000001590 oxidative effect Effects 0.000 claims description 2
- 230000004580 weight loss Effects 0.000 claims description 2
- 239000000126 substance Substances 0.000 abstract description 9
- 238000012512 characterization method Methods 0.000 abstract description 5
- 238000012854 evaluation process Methods 0.000 abstract description 5
- 238000002474 experimental method Methods 0.000 abstract description 4
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 9
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 9
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 6
- 238000006722 reduction reaction Methods 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 3
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 3
- 229910017604 nitric acid Inorganic materials 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 238000002441 X-ray diffraction Methods 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 230000002378 acidificating effect Effects 0.000 description 2
- 230000033228 biological regulation Effects 0.000 description 2
- 239000011651 chromium Substances 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 239000010936 titanium Substances 0.000 description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 229910052785 arsenic Inorganic materials 0.000 description 1
- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 description 1
- 229910052793 cadmium Inorganic materials 0.000 description 1
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 description 1
- 238000010531 catalytic reduction reaction Methods 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 230000009849 deactivation Effects 0.000 description 1
- 230000000593 degrading effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 210000004072 lung Anatomy 0.000 description 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- JBQYATWDVHIOAR-UHFFFAOYSA-N tellanylidenegermanium Chemical compound [Te]=[Ge] JBQYATWDVHIOAR-UHFFFAOYSA-N 0.000 description 1
- 238000002411 thermogravimetry Methods 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 description 1
- 239000013585 weight reducing agent Substances 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
- G01N21/314—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry with comparison of measurements at specific and non-specific wavelengths
- G01N21/3151—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry with comparison of measurements at specific and non-specific wavelengths using two sources of radiation of different wavelengths
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/02—Investigating particle size or size distribution
- G01N15/0205—Investigating particle size or size distribution by optical means
- G01N15/0211—Investigating a scatter or diffraction pattern
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N23/00—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00
- G01N23/02—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material
- G01N23/06—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material and measuring the absorption
- G01N23/083—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material and measuring the absorption the radiation being X-rays
- G01N23/085—X-ray absorption fine structure [XAFS], e.g. extended XAFS [EXAFS]
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N23/00—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00
- G01N23/20—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by using diffraction of the radiation by the materials, e.g. for investigating crystal structure; by using scattering of the radiation by the materials, e.g. for investigating non-crystalline materials; by using reflection of the radiation by the materials
- G01N23/20008—Constructional details of analysers, e.g. characterised by X-ray source, detector or optical system; Accessories therefor; Preparing specimens therefor
- G01N23/20025—Sample holders or supports therefor
- G01N23/20033—Sample holders or supports therefor provided with temperature control or heating means
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- Health & Medical Sciences (AREA)
- Chemical & Material Sciences (AREA)
- General Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Toxicology (AREA)
- Dispersion Chemistry (AREA)
- Crystallography & Structural Chemistry (AREA)
- Catalysts (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
Abstract
Description
구분 | ICP 분석 | XRD 분석 | BET 분석 | Porosimeter 분석 | NOx 전환실험 |
결과 | 활성성분 손실률 : 1% | 주촉매 결정구조 : 아나타제 형태 | 비표면적 감소율 : 11% | 미세기공 감소율 : 15% | NOx 전환율 : 80 % |
평가 | 재생가능 | 재생가능 | 재생가능 | 재생가능 | 재생가능 |
종합판정 | 촉매재생 가능 (촉매의 재생이 가능한 촉매성능 유지) |
구분 | ICP 분석 | XRD 분석 | BET 분석 | Porosimeter 분석 | TGA 분석 |
결과 | 활성성분 손실률 : 1% | 주촉매 결정구조 : 아나타제 형태 | 비표면적 감소율 : 33% | 미세기공 감소율 : 45% | 총 중량 감소율 : 8 % |
평가 | 재생가능 | 재생가능 | 재생 불가 | 재생가능 | 재생 불가 |
종합판정 | 촉매재생 불가 (재생이 불가 할 정도로 촉매성능 감소) |
열처리 온도 | 운반기체(공기) 공간속도 | 열처리 시간 | NOx 전환율 (300 ℃) | 비고 |
500℃ | 5,000 hr-1 | 2 hr | 92 % | 재사용 가능하도록 촉매성능 회복 |
용액 | pH | NOx 전환율 (300 ℃) | 비고 |
질산 | 5 | 94 % | 재사용 가능하도록 촉매성능 회복 |
황산 | 5 | 93 % | |
수산화 칼륨 | 12 | 92 % | |
수산화나트륨 | 12 | 93 % |
Claims (5)
- 삭제
- 열 병합 발전소, 석탄화력 발전소, 소각장 등에서 배출되는 질소산화물을 제거하기 위해 설치된 SCR공정에 장착되어 사용된 촉매를 재생하는 방법에 있어서,ⅰ) 폐 탈질촉매를 유도결합플라즈마분광분석기로 측정하여 촉매를 구성하고 있는 활성성분의 손실률 및 촉매표면에 침적된 중금속 함량을 평가하는 단계;ⅱ) 단계 ⅰ)의 폐 탈질촉매를 X-선회절분석기 측정하여 촉매의 결정구조를 평가하는 단계;ⅲ) 단계 ⅱ)의 폐 탈질촉매를 비표면적 분석기 및 기공분포측정기로 측정하여 촉매의 비표면적 감소율 및 기공분포를 평가하는 단계;ⅳ) 단계 ⅲ)의 폐 탈질촉매를 열중량분석기로 측정하여 촉매의 열적안정성을 평가하는 단계;ⅴ) 단계 ⅳ)의 폐 탈질촉매를 상압반응기로 NOx 전환활성을 평가하는 단계;ⅵ) 단계 ⅴ)가 종료된 폐 탈질촉매를 공기분위기 하에서 450 내지 550℃의 온도로 가열하여 촉매에 침적된 불순물을 산화시켜 제거하는 열처리단계;ⅶ) 열처리가 종료된 폐 탈질촉매를 pH가 일정하게 유지되는 산성용액으로 세척하는 단계;ⅷ) 단계 ⅶ)의 세척이 종료된 폐 탈질촉매를 pH가 일정하게 유지되는 염기성 용액으로 세척하는 세척 단계; 및ⅸ) 세척이 종료된 폐 탈질촉매를 증류수로 세척한 후 건조시키는 단계를 포함하는 촉매재생 처리방법.
- 제 2항에 있어서,상기 단계 ⅰ) 내지 단계 ⅴ) 중 어느 한 단계에서 분석된 폐 탈질촉매는 단계 ⅰ)의 활성성분의 손실률 및 중금속 함량이 손실율 5%이내, 중금속 함량 10%이내; 단계 ⅱ)의 촉매의 결정구조가 아나타제 형태; 단계 ⅲ)의 비표면적 감소율 및 기공분포가 감소율 30%이내, 기공의 분포 중 미세기공분포의 변화율이 50%이내; 단계 ⅳ)의 열적안정성이 분석온도 600℃ 범위 내에서 총 중량 감소율이 5%이내; 단계 ⅴ)의 NOx 전환율이 촉매활성 70%이상의 조건을 만족하지 못할 경우 그 다음 단계를 진행하지 않고 폐 탈질 촉매를 폐기하는 것을 특징으로 하는 촉매재생 처리방법.
- 삭제
- 제 2항에 있어서,상기 단계 ⅵ)이 운반기체로 공기를 공간속도 5,000 내지 10,000hr-1로 통과시키며 2 내지 3시간 동안 가열하는 것을 특징으로 하는 촉매재생 처리방법.
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Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101083308B1 (ko) | 2009-09-10 | 2011-11-15 | 한국전력공사 | 세정용액의 pH 조절에 의한 배연 탈질 폐촉매 재생방법 및 장치 |
KR101156951B1 (ko) * | 2008-10-22 | 2012-06-20 | 주식회사 엘지화학 | 올리빈 구조의 리튬 철인산화물 및 이의 분석 방법 |
KR101526418B1 (ko) * | 2013-12-31 | 2015-06-05 | 현대자동차 주식회사 | 내연 기관의 배기 가스 정화용 촉매 활성 평가 방법 |
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2004
- 2004-08-18 KR KR1020040065225A patent/KR100673303B1/ko active IP Right Grant
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101156951B1 (ko) * | 2008-10-22 | 2012-06-20 | 주식회사 엘지화학 | 올리빈 구조의 리튬 철인산화물 및 이의 분석 방법 |
US10249877B2 (en) | 2008-10-22 | 2019-04-02 | Lg Chem, Ltd. | Lithium iron phosphate having olivine structure and method for analyzing the same |
KR101083308B1 (ko) | 2009-09-10 | 2011-11-15 | 한국전력공사 | 세정용액의 pH 조절에 의한 배연 탈질 폐촉매 재생방법 및 장치 |
KR101526418B1 (ko) * | 2013-12-31 | 2015-06-05 | 현대자동차 주식회사 | 내연 기관의 배기 가스 정화용 촉매 활성 평가 방법 |
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