JP2018103100A - ハニカム吸着材ならびにその製造方法およびキャニスタ - Google Patents
ハニカム吸着材ならびにその製造方法およびキャニスタ Download PDFInfo
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- 239000003463 adsorbent Substances 0.000 title claims abstract description 111
- 238000004519 manufacturing process Methods 0.000 title claims description 8
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 77
- 238000010304 firing Methods 0.000 claims abstract description 35
- 229910044991 metal oxide Inorganic materials 0.000 claims abstract description 18
- 150000004706 metal oxides Chemical class 0.000 claims abstract description 18
- 239000002245 particle Substances 0.000 claims abstract description 11
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical group [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims description 62
- 239000000835 fiber Substances 0.000 claims description 27
- 239000011230 binding agent Substances 0.000 claims description 21
- 239000012778 molding material Substances 0.000 claims description 12
- 238000005192 partition Methods 0.000 claims description 7
- 230000005484 gravity Effects 0.000 claims description 6
- 229920001225 polyester resin Polymers 0.000 claims description 6
- 239000004645 polyester resin Substances 0.000 claims description 6
- 229920006122 polyamide resin Polymers 0.000 claims description 4
- 238000011068 loading method Methods 0.000 claims description 2
- 238000009423 ventilation Methods 0.000 abstract description 29
- 238000002156 mixing Methods 0.000 abstract description 11
- 239000011148 porous material Substances 0.000 abstract description 10
- 230000009467 reduction Effects 0.000 abstract description 6
- 230000000740 bleeding effect Effects 0.000 abstract 1
- 230000000052 comparative effect Effects 0.000 description 27
- 229920001778 nylon Polymers 0.000 description 19
- 239000000203 mixture Substances 0.000 description 13
- 239000000446 fuel Substances 0.000 description 12
- 239000000843 powder Substances 0.000 description 12
- 238000001179 sorption measurement Methods 0.000 description 8
- 238000010926 purge Methods 0.000 description 7
- 238000003795 desorption Methods 0.000 description 6
- 238000002485 combustion reaction Methods 0.000 description 4
- 230000033228 biological regulation Effects 0.000 description 3
- 238000001125 extrusion Methods 0.000 description 3
- 239000000395 magnesium oxide Substances 0.000 description 3
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 3
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000000440 bentonite Substances 0.000 description 2
- 229910000278 bentonite Inorganic materials 0.000 description 2
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 description 2
- 239000001273 butane Substances 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 239000004927 clay Substances 0.000 description 2
- 239000002828 fuel tank Substances 0.000 description 2
- 239000003502 gasoline Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- IJDNQMDRQITEOD-UHFFFAOYSA-N n-butane Chemical compound CCCC IJDNQMDRQITEOD-UHFFFAOYSA-N 0.000 description 2
- OFBQJSOFQDEBGM-UHFFFAOYSA-N n-pentane Natural products CCCCC OFBQJSOFQDEBGM-UHFFFAOYSA-N 0.000 description 2
- 238000002336 sorption--desorption measurement Methods 0.000 description 2
- 229920003002 synthetic resin Polymers 0.000 description 2
- 239000000057 synthetic resin Substances 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000008034 disappearance Effects 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000007246 mechanism Effects 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
- 239000002923 metal particle Substances 0.000 description 1
- 229920000609 methyl cellulose Polymers 0.000 description 1
- 239000001923 methylcellulose Substances 0.000 description 1
- 239000011812 mixed powder Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 230000029058 respiratory gaseous exchange Effects 0.000 description 1
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
【解決手段】円柱形のハニカム吸着材11は、軸方向に沿った複数のセル通路12を有し、セル通路12のピッチPは、1.5mm〜1.8mm、壁13の厚さTは、0.45mm〜0.60mmの範囲内にある。これにより、6.5g/dL以上のBWCを有する。焼成時に消失する繊維状のメルタブルコアを配合することで、ハニカム吸着材全体の重量に対し、0.15mL/g〜0.35mL/gの容積を占めるマクロポアを有し、活性炭に対し150〜250パーセントの重量割合を有する金属酸化物粒子を含む。
【選択図】図2
Description
軸方向に沿った複数のセル通路と、
焼成時に消失する繊維状のメルタブルコアを加えることで形成され、ハニカム吸着材全体の重量に対し、0.15mL/g〜0.35mL/gの容積を占めるマクロポアと、
活性炭に対し150〜250パーセントの重量割合を有する金属酸化物粒子と、
を含み、
互いに隣接するセル通路の間のピッチは、1.5mm〜1.8mmの範囲内にあり、セル通路を仕切る壁の厚さは、0.45mm〜0.60mmの範囲内にあり、
6.5g/dL以上のBWCを有する。
活性炭粉末に、該活性炭に対し150〜250パーセントの重量割合を有する金属酸化物粒子と、焼成時に消失する比重1.1g/cm3〜1.3g/cm3の繊維からなり、活性炭に対する重量割合が40〜100パーセントの範囲内にあるメルタブルコアと、バインダと、を加えて成形材料を準備し、
上記成形材料を、複数のセル通路をハニカム状に有する円柱形状の中間成形体に押出成形し、
上記中間成形体を焼成し、
互いに隣接するセル通路の間のピッチが、1.5mm〜1.8mmの範囲内にあり、セル通路を仕切る壁の厚さが、0.45mm〜0.60mmの範囲内にあり、
6.5g/dL以上のBWCを有するハニカム吸着材を得るようにしたものである。
[比較例6]
比較例6の配合は、粉末状の活性炭100重量部に対し、ナイロン繊維86重量部、バインダ134重量部、酸化鉄粉末466重量部、である。
[比較例7]
比較例7の配合は、粉末状の活性炭100重量部に対し、ナイロン繊維22重量部、バインダ75重量部、である。金属酸化物は配合していない。
[比較例8]
比較例8の配合は、粉末状の活性炭100重量部に対し、ナイロン繊維22重量部、バインダ35重量部、酸化鉄粉末40重量部、である。
[比較例9]
比較例9の配合は、粉末状の活性炭100重量部に対し、ナイロン繊維40重量部、バインダ63重量部、酸化鉄粉末423重量部、である。
[比較例10]
比較例10の配合は、粉末状の活性炭100重量部に対し、バインダ120重量部、酸化鉄粉末240重量部、である。メルタブルコアとなるナイロン繊維は配合していない。
[比較例11]
比較例11の配合は、粉末状の活性炭100重量部に対し、ナイロン繊維170重量部、バインダ67重量部、酸化鉄粉末233重量部、である。
[比較例12]
比較例12の配合は、粉末状の活性炭100重量部に対し、ナイロン繊維43重量部、バインダ67重量部、酸化鉄粉末233重量部、である。
[比較例13]
比較例13の配合は、粉末状の活性炭100重量部に対し、バインダ400重量部、である。ナイロン繊維および酸化物は配合していない。
5…ドレンポート
11…ハニカム吸着材
Claims (10)
- 活性炭の粉末をバインダとともに円柱形状に成形しかつ焼成したハニカム吸着材であって、キャニスタの複数の吸着材チャンバの中で、ドレンポートに最も近い吸着材チャンバに装填して使用されるハニカム吸着材において、
軸方向に沿った複数のセル通路と、
焼成時に消失する繊維状のメルタブルコアを加えることで形成され、ハニカム吸着材全体の重量に対し、0.15mL/g〜0.35mL/gの容積を占めるマクロポアと、
活性炭に対し150〜250パーセントの重量割合を有する金属酸化物粒子と、
を含み、
互いに隣接するセル通路の間のピッチは、1.5mm〜1.8mmの範囲内にあり、セル通路を仕切る壁の厚さは、0.45mm〜0.60mmの範囲内にあり、
6.5g/dL以上のBWCを有する、ハニカム吸着材。 - 上記ハニカム吸着材の外形寸法とセル通路の寸法とから定まる占有率が、少なくとも50パーセントである、請求項1に記載のハニカム吸着材。
- 上記セル通路の断面形状は、六角形、四角形、三角形、円形、のいずれかである、請求項1に記載のハニカム吸着材。
- 上記セル通路の断面形状は、六角形である、請求項3に記載のハニカム吸着材。
- 上記金属酸化物は酸化鉄である、請求項1に記載のハニカム吸着材。
- 請求項1に記載のハニカム吸着材を備えたキャニスタ。
- 少なくとも一つの追加の吸着材をさらに含む、請求項6に記載のキャニスタ。
- 活性炭粉末に、該活性炭に対し150〜250パーセントの重量割合を有する金属酸化物粒子と、焼成時に消失する比重1.1g/cm3〜1.3g/cm3の繊維からなり、活性炭に対する重量割合が40〜100パーセントの範囲内にあるメルタブルコアと、バインダと、を加えて成形材料を準備し、
上記成形材料を、複数のセル通路をハニカム状に有する円柱形状の中間成形体に押出成形し、
上記中間成形体を焼成し、
互いに隣接するセル通路の間のピッチが、1.5mm〜1.8mmの範囲内にあり、セル通路を仕切る壁の厚さが、0.45mm〜0.60mmの範囲内にあり、
6.5g/dL以上のBWCを有するハニカム吸着材を得るようにした、
キャニスタ用ハニカム吸着材の製造方法。 - メルタブルコアとなる繊維は、ポリアミド樹脂繊維またはポリエステル樹脂繊維である、請求項8に記載のキャニスタ用ハニカム吸着材の製造方法。
- メルタブルコアとなる繊維は、繊維径が10μm、繊維長が0.5mmである、請求項8に記載のキャニスタ用ハニカム吸着材の製造方法。
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