JP4462885B2 - 高比表面積消石灰及びその製造方法 - Google Patents
高比表面積消石灰及びその製造方法 Download PDFInfo
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- JP4462885B2 JP4462885B2 JP2003337793A JP2003337793A JP4462885B2 JP 4462885 B2 JP4462885 B2 JP 4462885B2 JP 2003337793 A JP2003337793 A JP 2003337793A JP 2003337793 A JP2003337793 A JP 2003337793A JP 4462885 B2 JP4462885 B2 JP 4462885B2
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- slaked lime
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- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 title claims description 96
- 235000011116 calcium hydroxide Nutrition 0.000 title claims description 96
- 239000000920 calcium hydroxide Substances 0.000 title claims description 95
- 229910001861 calcium hydroxide Inorganic materials 0.000 title claims description 95
- 238000004519 manufacturing process Methods 0.000 title claims description 18
- 239000002245 particle Substances 0.000 claims description 138
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims description 34
- 230000002776 aggregation Effects 0.000 claims description 34
- 238000004220 aggregation Methods 0.000 claims description 29
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 23
- 239000000292 calcium oxide Substances 0.000 claims description 17
- 235000012255 calcium oxide Nutrition 0.000 claims description 17
- 239000000843 powder Substances 0.000 claims description 15
- 238000006243 chemical reaction Methods 0.000 claims description 14
- 238000000034 method Methods 0.000 claims description 14
- 230000029087 digestion Effects 0.000 claims description 13
- 229910052757 nitrogen Inorganic materials 0.000 claims description 11
- 238000001179 sorption measurement Methods 0.000 claims description 11
- 239000000654 additive Substances 0.000 claims description 7
- 238000001354 calcination Methods 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 230000000996 additive effect Effects 0.000 claims description 5
- 238000005056 compaction Methods 0.000 claims description 5
- 238000010298 pulverizing process Methods 0.000 claims description 5
- 235000019738 Limestone Nutrition 0.000 claims description 4
- 238000005469 granulation Methods 0.000 claims description 4
- 230000003179 granulation Effects 0.000 claims description 4
- 239000006028 limestone Substances 0.000 claims description 4
- 230000032683 aging Effects 0.000 claims description 3
- 230000001934 delay Effects 0.000 claims description 2
- 239000011148 porous material Substances 0.000 description 23
- 239000007789 gas Substances 0.000 description 17
- 239000002253 acid Substances 0.000 description 8
- 230000000052 comparative effect Effects 0.000 description 8
- 238000009826 distribution Methods 0.000 description 7
- MTHSVFCYNBDYFN-UHFFFAOYSA-N diethylene glycol Chemical compound OCCOCCO MTHSVFCYNBDYFN-UHFFFAOYSA-N 0.000 description 6
- 239000000126 substance Substances 0.000 description 6
- 230000002378 acidificating effect Effects 0.000 description 5
- 238000005054 agglomeration Methods 0.000 description 5
- 239000000428 dust Substances 0.000 description 5
- 239000000203 mixture Substances 0.000 description 5
- 230000009467 reduction Effects 0.000 description 5
- 238000003860 storage Methods 0.000 description 5
- 238000012360 testing method Methods 0.000 description 5
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 4
- 239000010881 fly ash Substances 0.000 description 4
- IXCSERBJSXMMFS-UHFFFAOYSA-N hydrogen chloride Substances Cl.Cl IXCSERBJSXMMFS-UHFFFAOYSA-N 0.000 description 4
- 229910000041 hydrogen chloride Inorganic materials 0.000 description 4
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 3
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 3
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 3
- 235000011941 Tilia x europaea Nutrition 0.000 description 3
- GBAOBIBJACZTNA-UHFFFAOYSA-L calcium sulfite Chemical compound [Ca+2].[O-]S([O-])=O GBAOBIBJACZTNA-UHFFFAOYSA-L 0.000 description 3
- 235000010261 calcium sulphite Nutrition 0.000 description 3
- 239000007795 chemical reaction product Substances 0.000 description 3
- 239000011362 coarse particle Substances 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 230000006835 compression Effects 0.000 description 3
- 238000012790 confirmation Methods 0.000 description 3
- 230000008030 elimination Effects 0.000 description 3
- 238000003379 elimination reaction Methods 0.000 description 3
- 239000010419 fine particle Substances 0.000 description 3
- 239000004571 lime Substances 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 239000011164 primary particle Substances 0.000 description 3
- 238000012546 transfer Methods 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- 238000004438 BET method Methods 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 230000015271 coagulation Effects 0.000 description 2
- 238000005345 coagulation Methods 0.000 description 2
- 239000000567 combustion gas Substances 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 230000008021 deposition Effects 0.000 description 2
- 238000003795 desorption Methods 0.000 description 2
- TXKMVPPZCYKFAC-UHFFFAOYSA-N disulfur monoxide Inorganic materials O=S=S TXKMVPPZCYKFAC-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009257 reactivity Effects 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- XTQHKBHJIVJGKJ-UHFFFAOYSA-N sulfur monoxide Chemical compound S=O XTQHKBHJIVJGKJ-UHFFFAOYSA-N 0.000 description 2
- HGUFODBRKLSHSI-UHFFFAOYSA-N 2,3,7,8-tetrachloro-dibenzo-p-dioxin Chemical compound O1C2=CC(Cl)=C(Cl)C=C2OC2=C1C=C(Cl)C(Cl)=C2 HGUFODBRKLSHSI-UHFFFAOYSA-N 0.000 description 1
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 description 1
- IDCBOTIENDVCBQ-UHFFFAOYSA-N TEPP Chemical compound CCOP(=O)(OCC)OP(=O)(OCC)OCC IDCBOTIENDVCBQ-UHFFFAOYSA-N 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 238000005273 aeration Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000001110 calcium chloride Substances 0.000 description 1
- 229910001628 calcium chloride Inorganic materials 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000002596 correlated effect Effects 0.000 description 1
- 230000000875 corresponding effect Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 238000009775 high-speed stirring Methods 0.000 description 1
- 239000004572 hydraulic lime Substances 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- YWXYYJSYQOXTPL-SLPGGIOYSA-N isosorbide mononitrate Chemical compound [O-][N+](=O)O[C@@H]1CO[C@@H]2[C@@H](O)CO[C@@H]21 YWXYYJSYQOXTPL-SLPGGIOYSA-N 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000001878 scanning electron micrograph Methods 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 230000019635 sulfation Effects 0.000 description 1
- 238000005670 sulfation reaction Methods 0.000 description 1
- ZSDSQXJSNMTJDA-UHFFFAOYSA-N trifluralin Chemical compound CCCN(CCC)C1=C([N+]([O-])=O)C=C(C(F)(F)F)C=C1[N+]([O-])=O ZSDSQXJSNMTJDA-UHFFFAOYSA-N 0.000 description 1
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- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
Description
(中段の篩に残った粉体重)/2g×100×3/5…(b)
(下段の篩に残った粉体重)/2g×100×1/5…(c)
上記3つの計算値の合計をもって凝集度(%)とする。
付着率確認試験は消石灰切り出し/気送供給機として、松下産業製スラッドバルブS−330Nを用いて、前記供給機にトウタク製の50Aフレキシブル配管(TACSD−C−50A)を接続し、前記配管の有効水平部として30mを確保し、先端にテトロンフェルト材質の簡易バグフィルター(200mmφ×6m)を取り付け、消石灰の捕集部とした。試験は、投入気送量がほぼ30kg/hr程度、固気比0.3程度になるような条件下で各消石灰に対し10分間の気送終了後、バグフィルター内の消石灰捕集量(A)を測定し、その後、5分間消石灰を投入せずにブロー運転を行いながら、3人の測定員にて配管10mに付き150回ハンマーで軽く叩き、配管内面付着物を落とし、バグフィルターに捕集させた。この捕集量(B)と前記Aより、(B−A)×100/Bを付着率として簡易的に定義した。付着率確認試験の結果を表4に示す。
Claims (6)
- 水酸化カルシウムを主成分とする窒素吸着比表面積が35m2/g以上の高比表面積消石灰であって、粒径40μm〜200μmの範囲の粒子の平均粒径が75μm以上であり、粒径40μm〜200μmの範囲の粒子を45wt%以上含み、パウダーテスタで測定される凝集度が50%以下であることを特徴とする高比表面積消石灰。
- 粒径40μm未満の粒子の平均粒径が10μm以上であることを特徴とする請求項1に記載の高比表面積消石灰。
- 水酸化カルシウムを主成分とする窒素吸着比表面積が35m 2 /g以上の高比表面積消石灰であって、粒径40μm〜200μmの範囲の粒子の平均粒径が75μm以上であり、粒径40μm〜200μmの範囲の粒子を45wt%以上含み、前記凝集度(%)をゆるみ見かけ密度(g/cm 3 )で割った値、すなわち商が150以下であることを特徴とする高比表面積消石灰。
- 粒径40μm未満の粒子の平均粒径が10μm以上であることを特徴とする請求項3に記載の高比表面積消石灰。
- パウダーテスタで測定される凝集度が50%以下であることを特徴とする請求項3または4に記載の高比表面積消石灰。
- 生石灰を消化し、水酸化カルシウムを主成分とする窒素吸着比表面積が35m2/g以上の高比表面積消石灰を製造する方法において、
微晶質ないし隠微晶質の石灰石の焼成温度および焼成時間を、製造される生石灰のCO 2 量が4.0重量%以下になるように調整して焼成した生石灰の粒径を0.5mm以下に調整する粒度調整工程と、
水との消化反応を遅延させる添加剤を用いて生石灰を消化する消化工程と、を備え、
消化機、又は消化機及び熟成機による前記消化工程の後、粉砕、分級、圧密造粒のいずれの工程をも備えないことを特徴とする高比表面積消石灰の製造方法。
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JP2005104754A JP2005104754A (ja) | 2005-04-21 |
JP2005104754A5 JP2005104754A5 (ja) | 2006-11-16 |
JP4462885B2 true JP4462885B2 (ja) | 2010-05-12 |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2018170255A1 (en) * | 2017-03-17 | 2018-09-20 | Graymont (Pa) Inc. | Calcium hydroxide-containing compositions and associated systems and methods |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
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JP5148490B2 (ja) * | 2006-06-02 | 2013-02-20 | 国立大学法人東北大学 | 多孔質酸化カルシウム粒状物及び多孔質水酸化カルシウム粒状物 |
JP5306739B2 (ja) * | 2008-08-18 | 2013-10-02 | 宇部マテリアルズ株式会社 | 消石灰及びその製造方法 |
CN115779658B (zh) * | 2022-11-07 | 2023-10-24 | 北京首创环境科技有限公司 | 一种飞灰-消石灰复合浆液脱硫剂及其制备方法与应用 |
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Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2018170255A1 (en) * | 2017-03-17 | 2018-09-20 | Graymont (Pa) Inc. | Calcium hydroxide-containing compositions and associated systems and methods |
US10369518B2 (en) | 2017-03-17 | 2019-08-06 | Graymont (Pa) Inc. | Calcium hydroxide-containing compositions and associated systems and methods |
US10610825B2 (en) | 2017-03-17 | 2020-04-07 | Graymont (Pa) Inc. | Calcium hydroxide-containing compositions and associated systems and methods |
US10874982B2 (en) | 2017-03-17 | 2020-12-29 | Graymont (Pa) Inc. | Calcium hydroxide-containing compositions and associated systems and methods |
US11344844B2 (en) | 2017-03-17 | 2022-05-31 | Graymont (Pa) Inc. | Calcium hydroxide-containing compositions and associated systems and methods |
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