JP5767497B2 - 重質炭化水素の除去方法 - Google Patents
重質炭化水素の除去方法 Download PDFInfo
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Description
ΔH298=+206kJ/mol
式(2): CH4 + CO2 → 2CO + 2H2
ΔH298=+248kJ/mol
ΔH298=−167kJ/mol−CO
本発明の第1の実施形態は、FTオフガスを吸収油と直接接触させることにより、オフガス中の重質炭化水素を吸収油に吸収させる方法である。
GTL技術を実行するプラントにおいて、FT合成工程で発生した未反応合成ガスと気体状の炭化水素からなるガスを冷却して気液分離し、表1に示す組成を有するFTオフガスを得た。なお、表1においてCnは炭素数がn個の炭化水素を意味し、C5+は、炭素数が5個以上の炭化水素を意味する。得られたFTオフガスの温度は45℃、圧力は2.75MPaG、流量は1000kmol/h(=15284kg/h)だった。炭素数が5以上の重質炭化水素の含有量は4.32wt%だった。
実施例1で得たFTオフガスを蒸留塔に導入して、塔頂から回収される燃料ガスと塔底から回収される液体状の成分とに分離した(図2)。FTオフガスの塔頂での圧力は2.65MPaG、塔底での温度は198℃、塔頂での温度は−37℃だった。その後、塔頂から得られた燃料ガスに含まれる炭素数が5以上の重質炭化水素の含有量を測定した。
実施例1で得たFTオフガスと軽油に相当する吸収油とを、FTオフガスの圧力2.7MPaG、温度48℃の条件下で単段で直接接触させ、吸収油中に吸収された重質炭化水素を回収した(図3)。用いた吸収油の蒸留性状を表2に示す。また、吸収油の流量は10000kg/hとした。その後、燃料ガスに含まれる、吸収油に吸収されなかった炭素数が5以上の重質炭化水素の含有量を測定した。
実施例3において、さらに吸収油と接触させる際の温度を10℃に冷却し、重質炭化水素を回収した(図4)。吸収油の流量は10000kg/hとした。その後、燃料ガスに含まれる、吸収油に吸収されなかった炭素数が5以上の重質炭化水素の含有量を測定した。
実施例3において、FTオフガスと吸収油とを8段の吸収塔を用いて接触させ、重質炭化水素を回収した(図5)。FTオフガスの圧力は塔頂で2.65MPaG、温度は塔底で49℃、塔頂で50℃だった。また、吸収油の流量は10000kg/hとした。その後、燃料ガスに含まれる、吸収油に吸収されなかった炭素数が5以上の重質炭化水素の含有量を測定した。
実施例3〜5において、用いる吸収液の流量を2倍の20000kg/hにした以外は同条件で実験を行い、それぞれ実施例6〜8とした。
Claims (8)
- メタンを主成分とする天然ガスとスチーム及び/又は炭酸ガスとを、改質触媒を充填してバーナー燃焼により加熱した管式リフォーマーを通して反応させることにより、水素及び一酸化炭素を主成分とする合成ガスを製造する合成ガス製造工程、
該合成ガス製造工程で製造された合成ガスをフィッシャー・トロプシュ合成反応させた後、反応混合物からガス状成分を分離することにより、フィッシャー・トロプシュ油を製造するフィッシャー・トロプシュ合成工程、並びに
該フィッシャー・トロプシュ油を水素化精製又は水素化分解処理することにより各種炭化水素油を製造するアップグレーディング工程からなり、さらに
該フィッシャー・トロプシュ合成工程で分離されたガス状成分を冷却して凝縮する成分を除去した非凝縮成分を該フィッシャー・トロプシュ合成工程にリサイクルし、
該非凝縮成分の一部をフィッシャー・トロプシュ合成工程にリサイクルせずに抜出したFTオフガスを管式リフォーマーの燃料として用いる、天然ガスから各種炭化水素油を製造する方法において、
管式リフォーマーの燃料として用いる前に該FTオフガスに含まれる炭素数が5以上の重質炭化水素を除去することを特徴とする方法。
- 前記FTオフガスを吸収油と接触させることにより前記重質炭化水素を除去することを特徴とする、請求項1に記載の方法。
- 前記吸収油は灯油又は軽油である、請求項2に記載の方法。
- 前記吸収油を冷却する、請求項2又は3に記載の方法。
- 多段吸収塔を用いて前記FTオフガスを吸収油と接触させる、請求項2〜4のいずれか1項に記載の方法。
- 前記FTオフガスを蒸留することにより重質炭化水素を除去することを特徴とする、請求項1に記載の方法。
- 吸着剤により前記FTオフガスから前記重質炭化水素を除去することを特徴とする、請求項1に記載の方法。
- 前記吸着剤は活性炭である、請求項7に記載の方法。
Priority Applications (12)
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JP2011078804A JP5767497B2 (ja) | 2011-03-31 | 2011-03-31 | 重質炭化水素の除去方法 |
US14/008,355 US20140021094A1 (en) | 2011-03-31 | 2011-03-31 | Method of removing heavy hydrocarbons |
EA201391432A EA025037B1 (ru) | 2011-03-31 | 2012-03-22 | Способ получения углеводородных масел |
CN201280015603.8A CN103492532A (zh) | 2011-03-31 | 2012-03-22 | 重质烃的除去方法 |
MYPI2013701824A MY166432A (en) | 2011-03-31 | 2012-03-22 | Method of removing heavy hydrocarbons |
EP12764763.4A EP2692833A4 (en) | 2011-03-31 | 2012-03-22 | METHOD FOR REMOVING HEAVY HYDROCARBONS |
AU2012235394A AU2012235394B2 (en) | 2011-03-31 | 2012-03-22 | Method of removing heavy hydrocarbons |
BR112013025178-6A BR112013025178A2 (pt) | 2011-03-31 | 2012-03-22 | método de remoção de hidrocarbonetos pesados |
PCT/JP2012/001965 WO2012132336A1 (ja) | 2011-03-31 | 2012-03-22 | 重質炭化水素の除去方法 |
CA2831552A CA2831552C (en) | 2011-03-31 | 2012-03-22 | Method of removing heavy hydrocarbons |
AP2013007175A AP2013007175A0 (en) | 2011-03-31 | 2012-03-22 | Method of removing heavy hydrocarbons |
ZA2013/07219A ZA201307219B (en) | 2011-03-31 | 2013-09-26 | Method of removing heavy hydrocarbons |
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JP2011078804A JP5767497B2 (ja) | 2011-03-31 | 2011-03-31 | 重質炭化水素の除去方法 |
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US (1) | US20140021094A1 (ja) |
EP (1) | EP2692833A4 (ja) |
JP (1) | JP5767497B2 (ja) |
CN (1) | CN103492532A (ja) |
AP (1) | AP2013007175A0 (ja) |
AU (1) | AU2012235394B2 (ja) |
BR (1) | BR112013025178A2 (ja) |
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EA (1) | EA025037B1 (ja) |
MY (1) | MY166432A (ja) |
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CN103857619A (zh) * | 2011-09-01 | 2014-06-11 | Gtl汽油有限公司 | Ft体系与生成合成气的整合 |
US20160168489A1 (en) * | 2013-07-25 | 2016-06-16 | Daewoo Shipbuilding & Marine Engineering Co., Ltd. | Method and system for gtl production in fpso |
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BR0206966A (pt) * | 2001-12-05 | 2004-03-09 | Accentus Plc | Processo para realizar reforma de vapor/metano para gerar monóxido de carbono e hidrogênio, e, planta para processar metano |
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GB0405786D0 (en) * | 2004-03-16 | 2004-04-21 | Accentus Plc | Processing natural gas to form longer-chain hydrocarbons |
RU2415904C2 (ru) * | 2006-03-30 | 2011-04-10 | Ниппон Стил Инджиниринг Ко., Лтд. | Система синтеза жидкого топлива |
CA2648502A1 (en) * | 2006-05-08 | 2007-11-15 | Compactgtl Plc | Catalyst structure for a rapid reaction |
EP1887072A1 (en) * | 2006-08-10 | 2008-02-13 | Shell Internationale Researchmaatschappij B.V. | a process for the treatment of fischer-tropsch tail gas |
EP2447339A1 (en) * | 2007-01-19 | 2012-05-02 | Velocys Inc. | Process and apparatus for converting natural gas to higher molecular weight hydrocarbons using microchannel process technology |
JP5174411B2 (ja) * | 2007-09-28 | 2013-04-03 | 独立行政法人石油天然ガス・金属鉱物資源機構 | 管式リフォーマーの有効熱利用方法 |
JP5173531B2 (ja) * | 2008-03-31 | 2013-04-03 | 独立行政法人石油天然ガス・金属鉱物資源機構 | Gtlプラントにおける合成ガスリフォーマの運転方法 |
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Also Published As
Publication number | Publication date |
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AP2013007175A0 (en) | 2013-10-31 |
CA2831552C (en) | 2016-04-19 |
EP2692833A4 (en) | 2014-11-19 |
CN103492532A (zh) | 2014-01-01 |
BR112013025178A2 (pt) | 2021-03-23 |
CA2831552A1 (en) | 2012-10-04 |
US20140021094A1 (en) | 2014-01-23 |
EA201391432A1 (ru) | 2014-01-30 |
WO2012132336A1 (ja) | 2012-10-04 |
EA025037B1 (ru) | 2016-11-30 |
EP2692833A1 (en) | 2014-02-05 |
MY166432A (en) | 2018-06-27 |
JP2012214528A (ja) | 2012-11-08 |
ZA201307219B (en) | 2014-05-28 |
AU2012235394B2 (en) | 2015-09-10 |
AU2012235394A1 (en) | 2013-10-31 |
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