JP2023500322A - So2吸着材料、その製造方法及び使用、並びにso2含有煙道ガス中のso2の除去方法 - Google Patents
So2吸着材料、その製造方法及び使用、並びにso2含有煙道ガス中のso2の除去方法 Download PDFInfo
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- JP2023500322A JP2023500322A JP2022525662A JP2022525662A JP2023500322A JP 2023500322 A JP2023500322 A JP 2023500322A JP 2022525662 A JP2022525662 A JP 2022525662A JP 2022525662 A JP2022525662 A JP 2022525662A JP 2023500322 A JP2023500322 A JP 2023500322A
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- sulfite
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- 239000000463 material Substances 0.000 title claims abstract description 218
- 239000003463 adsorbent Substances 0.000 title claims abstract description 69
- 239000003546 flue gas Substances 0.000 title claims abstract description 38
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 37
- 238000000034 method Methods 0.000 title claims abstract description 34
- 238000004519 manufacturing process Methods 0.000 title claims description 6
- 238000001179 sorption measurement Methods 0.000 claims abstract description 131
- LSNNMFCWUKXFEE-UHFFFAOYSA-N Sulfurous acid Chemical compound OS(O)=O LSNNMFCWUKXFEE-UHFFFAOYSA-N 0.000 claims abstract description 40
- 239000013384 organic framework Substances 0.000 claims abstract description 33
- 239000012621 metal-organic framework Substances 0.000 claims abstract description 31
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- GEHJYWRUCIMESM-UHFFFAOYSA-L sodium sulfite Chemical group [Na+].[Na+].[O-]S([O-])=O GEHJYWRUCIMESM-UHFFFAOYSA-L 0.000 claims description 48
- 235000010265 sodium sulphite Nutrition 0.000 claims description 24
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- 239000013132 MOF-5 Substances 0.000 claims description 21
- 239000013154 zeolitic imidazolate framework-8 Substances 0.000 claims description 11
- MFLKDEMTKSVIBK-UHFFFAOYSA-N zinc;2-methylimidazol-3-ide Chemical compound [Zn+2].CC1=NC=C[N-]1.CC1=NC=C[N-]1 MFLKDEMTKSVIBK-UHFFFAOYSA-N 0.000 claims description 11
- 238000011068 loading method Methods 0.000 claims description 10
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- 239000013094 zinc-based metal-organic framework Substances 0.000 claims description 6
- 238000001035 drying Methods 0.000 claims description 5
- BHZRJJOHZFYXTO-UHFFFAOYSA-L potassium sulfite Chemical compound [K+].[K+].[O-]S([O-])=O BHZRJJOHZFYXTO-UHFFFAOYSA-L 0.000 claims description 5
- 235000019252 potassium sulphite Nutrition 0.000 claims description 5
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 16
- 230000000694 effects Effects 0.000 description 12
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- 238000003795 desorption Methods 0.000 description 9
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- 230000007423 decrease Effects 0.000 description 7
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- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 4
- 230000008901 benefit Effects 0.000 description 4
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- LSNNMFCWUKXFEE-UHFFFAOYSA-L sulfite Chemical class [O-]S([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-L 0.000 description 3
- 244000198551 Digitaria iburua Species 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 2
- KKEYFWRCBNTPAC-UHFFFAOYSA-N Terephthalic acid Chemical compound OC(=O)C1=CC=C(C(O)=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-N 0.000 description 2
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical group [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 2
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- 238000006243 chemical reaction Methods 0.000 description 2
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- 239000001307 helium Substances 0.000 description 2
- 229910052734 helium Inorganic materials 0.000 description 2
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
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- 229910052754 neon Inorganic materials 0.000 description 2
- GKAOGPIIYCISHV-UHFFFAOYSA-N neon atom Chemical compound [Ne] GKAOGPIIYCISHV-UHFFFAOYSA-N 0.000 description 2
- 230000008929 regeneration Effects 0.000 description 2
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- 239000011734 sodium Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 150000003467 sulfuric acid derivatives Chemical class 0.000 description 2
- 229910052725 zinc Inorganic materials 0.000 description 2
- YSWBFLWKAIRHEI-UHFFFAOYSA-N 4,5-dimethyl-1h-imidazole Chemical compound CC=1N=CNC=1C YSWBFLWKAIRHEI-UHFFFAOYSA-N 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- 239000005864 Sulphur Substances 0.000 description 1
- 238000003916 acid precipitation Methods 0.000 description 1
- 230000004931 aggregating effect Effects 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
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- 239000002131 composite material Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 239000002803 fossil fuel Substances 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229910021645 metal ion Inorganic materials 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
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- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
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Abstract
Description
本願は2019年10月31日に提出された中国特許出願201911048429.7の利益を主張しており、この出願の内容は引用により本明細書に組み込まれている。
本発明は脱硫分野に関し、具体的には、SO2吸着材料、SO2吸着材料の製造方法、前記方法によって製造されたSO2吸着材料、前記SO2吸着材料の脱硫分野における使用、SO2含有煙道ガス中のSO2の除去方法に関する。
化石燃料(石炭、石油など)は硫黄を多く含んでおり、直接燃焼すると、煙道ガスからSO2が多く生成される。SO2の過剰排出は一連の環境問題を引き起こし、これにより生じた酸性雨や光化学スモッグが人間の生産や生活に深刻な危害をもたらした。
〔発明が解決しようとする課題〕
本発明の目的は、従来技術において、水蒸気の存在下、SO2吸着材料の吸着量が低下しやすく、物理吸着能力が劣るという欠陥を解決することである。
上記の目的を達成させるために、本発明の第1態様は、
炭化金属有機構造体材料と、前記炭化金属有機構造体材料上に担持された亜硫酸塩が含有されており、前記炭化金属有機構造体材料は金属有機構造体材料を炭化処理した炭化材料であり、
前記SO2吸着材料の全重量を基準に、前記亜硫酸塩の担持量が10重量%以下である、SO2吸着材料を提供する。
金属有機構造体材料を炭化処理して、金属有機構造体材料中の少なくとも一部の金属元素を構造体から除去し、炭化金属有機構造体材料を得るステップ(1)と、
前記炭化金属有機構造体材料上に亜硫酸塩を担持して、前記SO2吸着材料を得るステップ(2)と、を含み、
前記炭化金属有機構造体材料及び前記亜硫酸塩は、得られた前記SO2吸着材料中、前記SO2吸着材料の全重量を基準に、前記亜硫酸塩の担持量が10重量%以下である量で使用される、SO2吸着材料の製造方法を提供する。
処理対象のSO2含有煙道ガスを、前記第1態様又は第3態様に記載のSO2吸着材料と接触させて、吸着処理を行うステップを含む、SO2含有煙道ガス中のSO2の除去方法を提供する。
従来技術に比べて、本発明は、少なくとも、下記利点を有する。
〔図1〕MOF-5、実施例1で製造されたSO2吸着材料L1、及び比較例1で製造されたSO2吸着材料D1の吸着-脱着を30回繰り返した測定結果の比較図である。
本明細書で開示された範囲の端点及びいずれの値もこの精確な範囲又は値に限定されるものではなく、これらの範囲又は値はこれらの範囲又は値に近い値を含むものとして理解すべきである。数値の範囲の場合、各範囲の端点値同士、各範囲の端点値と個別の点値、及び個別の点値同士は組み合わせられて1つ又は複数の新しい数値範囲を構成することができ、これらの数値の範囲は本明細書において具体的に開示されたものとみなすべきである。
炭化金属有機構造体材料と、前記炭化金属有機構造体材料上に担持された亜硫酸塩とが含有されており、前記炭化金属有機構造体材料は、金属有機構造体材料を炭化処理した炭化材料であり、
前記SO2吸着材料の全重量を基準に、前記亜硫酸塩的担持量が10重量%以下である、SO2吸着材料を提供する。
金属有機構造体材料を炭化処理して、金属有機構造体材料中の少なくとも一部の金属元素を構造体から除去し、炭化金属有機構造体材料を得るステップ(1)と、
(2)前記炭化金属有機構造体材料上に亜硫酸塩を担持して、前記SO2吸着材料を得るステップ(2)とを含み、
前記炭化金属有機構造体材料及び前記亜硫酸塩は、得られた前記SO2吸着材料中、前記SO2吸着材料の全重量を基準に、前記亜硫酸塩の担持量が10重量%以下である量で使用される、SO2吸着材料の製造方法を提供する。
比表面積1655m2/g、細孔容積1.13cm3/g、Zn元素含有量31.2重量%のMOF-5を基体とした。
ステップ(2)において、濃度1.2質量%の亜硫酸ナトリウム溶液に炭化金属有機構造体材料置を加えて等体積浸漬し、SO2吸着材料L2を得た以外、実施例1と同様な方式を採用した。
ステップ(2)において、濃度4質量%の亜硫酸ナトリウム溶液に炭化金属有機構造体材料を加えて等体積浸漬し、SO2吸着材料L3を得た以外、実施例1と同様な方式を採用した。
ステップ(2)において、濃度5.8質量%の亜硫酸ナトリウム溶液に炭化金属有機構造体材料を加えて等体積浸漬し、SO2吸着材料L4を得た以外、実施例1と同様な方式を採用した。
比表面積1150m2/g、細孔容積0.82cm3/g、Zn元素含有量30.7重量%のZIF-8を基体とした。
比表面積852m2/g、細孔容積1.02cm3/g、Zn元素含有量29.2重量%のMOF-74を基体とした。
比表面積1655m2/g、細孔容積1.13cm3/g、Zn元素含有量31.2重量%のMOF-5を基体とした。
濃度3質量%の亜硫酸ナトリウム溶液に市販活性炭材料(かさ密度0.62g/cm3、比表面積865m2/g、細孔容積0.52cm3/g)を加えて、1h等体積浸漬し、浸漬終了後、窒素ガス存在下、120℃で6h乾燥させ、SO2吸着材料D2を得た。
ステップ(2)において、濃度6.5質量%の亜硫酸ナトリウム溶液に炭化金属有機構造体材料を加えて等体積浸漬し、SO2吸着材料D3を得た以外、実施例1と同様な方式を採用した。
炭化処理を行わずに、MOF-5をそのままで濃度3質量%の亜硫酸ナトリウム溶液に加えて1h等体積浸漬したが、MOF-5材料は亜硫酸ナトリウム溶液に加えると構造が崩壊して分解し、吸着材料が得られず、後続の操作ができなかった。
以上の例で製造されたSO2吸着材料の吸着性能をそれぞれ測定した。
以上の例で製造された吸着材料の、さまざまな圧力及び温度の条件での吸着性能をそれぞれ測定した。
以上の例で製造された吸着材料の繰り返し吸着-脱着性能を測定した。
吸着出口での濃度が50mg/m3になると破過時間に達するとした。
Claims (15)
- 炭化金属有機構造体材料と、前記炭化金属有機構造体材料上に担持された亜硫酸塩が含有されており、前記炭化金属有機構造体材料は金属有機構造体材料を炭化処理した炭化材料であり、
前記SO2吸着材料の全重量を基準に、前記亜硫酸塩の担持量が10重量%以下である、ことを特徴とするSO2吸着材料。 - 前記SO2吸着材料の全重量を基準に、前記亜硫酸塩の担持量が2~7重量%であり、
好ましくは、前記亜硫酸塩は亜硫酸ナトリウム及び/又は亜硫酸カリウムである、請求項1に記載のSO2吸着材料。 - 前記炭化金属有機構造体材料は規則的な多孔質ケージトポロジー構造を有し、かさ密度が0.2~0.35g/cm3、比表面積が1000~2700m2/g、細孔容積が1~3.8cm3/g、(マクロ細孔容積+メソ細孔容積)/マイクロ細孔容積=0.16~3.5であり、
好ましくは、前記炭化金属有機構造体材料は規則的な多孔質ケージトポロジー構造を有し、かさ密度が0.22~0.33g/cm3、比表面積が1025~2650m2/g、細孔容積が1.06~3.7cm3/g、(マクロ細孔容積+メソ細孔容積)/マイクロ細孔容積=2.3~3.5である、請求項1又は2に記載のSO2吸着材料。 - かさ密度が0.2~0.39g/cm3、比表面積が1000~2700m2/g、細孔容積が1~3.7cm3/g、(マクロ細孔容積+メソ細孔容積)/マイクロ細孔容積=0.21~3.5であり、
好ましくは、かさ密度が0.21~0.35g/cm3、比表面積が2000~2650m2/g、細孔容積が2.8~3.7cm3/g、(マクロ細孔容積+メソ細孔容積)/マイクロ細孔容積=2.3~3.5である、請求項1~3のいずれか1項に記載のSO2吸着材料。 - 前記金属有機構造体材料は亜鉛ベース金属有機構造体材料であり、
好ましくは、前記金属有機構造体材料は、MOF-5、MOF-74、ZIF-8、ZIF-7、ZIF-20から選ばれる少なくとも1種であり、
好ましくは、前記金属有機構造体材料は、比表面積が1500~1700m2/g、細孔容積が1~1.15cm3/gのMOF-5である、請求項1~4のいずれか1項に記載のSO2吸着材料。 - 前記炭化処理は、保護雰囲気、900~1150℃の炭化温度で、5~10h行われる、請求項1~5のいずれか1項に記載のSO2吸着材料。
- 金属有機構造体材料を炭化処理して、金属有機構造体材料中の少なくとも一部の金属元素を構造体から除去し、炭化金属有機構造体材料を得るステップ(1)と、
前記炭化金属有機構造体材料上に亜硫酸塩を担持して、前記SO2吸着材料を得るステップ(2)とを含み、
前記炭化金属有機構造体材料及び前記亜硫酸塩は、得られた前記SO2吸着材料中、前記SO2吸着材料の全重量を基準に、前記亜硫酸塩の担持量が10重量%以下、好ましくは2~7重量%である量で使用される、ことを特徴とするSO2吸着材料の製造方法。 - ステップ(1)において、前記炭化処理は、保護雰囲気、900~1150℃の炭化温度で、5~10h行われる、請求項7に記載の方法。
- ステップ(2)において、前記炭化金属有機構造体材料上に亜硫酸塩を担持する手段は、亜硫酸塩溶液を用いて前記炭化金属有機構造体材料を浸漬し、その後、乾燥させて溶剤を除去することを含み、
好ましくは、前記亜硫酸塩溶液の濃度が6質量%未満であり、
好ましくは、前記乾燥は、不活性雰囲気、100~120℃の乾燥温度で、6~10h行われる、請求項7又は8に記載の方法。 - 前記亜硫酸塩は亜硫酸ナトリウム及び/又は亜硫酸カリウムである、請求項7~9のいずれか1項に記載の方法。
- 前記金属有機構造体材料は亜鉛ベース金属有機構造体材料から選ばれ、
好ましくは、前記金属有機構造体材料はMOF-5、MOF-74、ZIF-8、ZIF-7、ZIF-20から選ばれる少なくとも1種であり、
好ましくは、前記金属有機構造体材料は、比表面積が1500~1700m2/g、細孔容積が1~1.15cm3/gのMOF-5である、請求項7~10のいずれか1項に記載の方法。 - 請求項7~11のいずれか1項に記載の方法によって製造されたSO2吸着材料。
- 請求項1~6及び12のいずれか1項に記載のSO2吸着材料の脱硫分野における使用。
- 処理対象のSO2含有煙道ガスを、請求項1~6及び12のいずれか1項に記載のSO2吸着材料と接触させて、吸着処理を行うステップを含む、ことを特徴とするSO2含有煙道ガス中のSO2の除去方法。
- 前記吸着処理の条件は、吸着温度5~25℃、吸着体積空間速度100~1000h-1、吸着圧力0~0.3MPaを含み、
好ましくは、前記処理対象のSO2含有煙道ガス中、SO2の含有量は1~5体積%、水蒸気の含有量は1~4体積%である、請求項14に記載の方法。
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