JP2011027318A - 空気液化分離方法及び装置 - Google Patents
空気液化分離方法及び装置 Download PDFInfo
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Abstract
【解決手段】原料空気の全量を中圧塔の運転圧力より高い第1設定圧力の昇圧原料空気とする原料空気圧縮工程と、昇圧原料空気から不純物を除去して昇圧精製空気とする吸着精製工程と、昇圧精製空気と昇圧帰還空気とを合流させて循環空気とする循環空気合流工程と、循環空気を2分流した第1分流空気を第1設定温度に冷却して中圧塔導入空気とし、第2分流空気を第1設定温度より高い第2設定温度に冷却して膨張用空気とする冷却工程と、膨張用空気を第1設定圧力より低い第2設定圧力に断熱膨張させて低温空気とする膨張工程と、低温空気の一部を中圧塔に導入する工程と、低温空気の残部を温度回復させて帰還空気とする昇温工程と、該帰還空気を昇圧して昇圧帰還空気とする循環圧縮工程と、中圧塔導入空気を中圧塔に導入する工程とを有している。
【選択図】図1
Description
Claims (8)
- 圧縮、精製、冷却した原料空気を中圧塔及び低圧塔にて低温蒸留することにより少なくとも液体酸素を製品として採取する空気液化分離方法において、原料空気の全量を前記中圧塔の運転圧力より高い第1設定圧力に昇圧して昇圧原料空気とする原料空気圧縮工程と、該昇圧原料空気から不純物を吸着除去して昇圧精製空気とする吸着精製工程と、該昇圧精製空気と後述する昇圧帰還空気とを合流させて循環空気とする循環空気合流工程と、該循環空気を2分流した第1分流空気を第1設定温度に冷却して中圧塔導入空気とし、第2分流空気を前記第1設定温度より高い第2設定温度に冷却して膨張用空気とする冷却工程と、該膨張用空気を前記第1設定圧力より低い第2設定圧力に断熱膨張させることにより低温空気とする膨張工程と、該低温空気の一部を前記中圧塔に導入する工程と、該低温空気の残部を温度回復させて帰還空気とする昇温工程と、該帰還空気を昇圧して前記昇圧帰還空気とする循環圧縮工程と、前記中圧塔導入空気を前記中圧塔に導入する工程とを備えていることを特徴とする空気液化分離方法。
- 圧縮、精製、冷却した原料空気を中圧塔及び低圧塔にて低温蒸留することにより少なくとも液体酸素を製品として採取する空気液化分離方法において、原料空気の全量を前記中圧塔の運転圧力より高い第1設定圧力に昇圧して昇圧原料空気とする原料空気圧縮工程と、該昇圧原料空気から不純物を吸着除去して昇圧精製空気とする吸着精製工程と、該昇圧精製空気と後述する昇圧帰還空気とを合流させて循環空気とする循環空気合流工程と、該循環空気を3分流した第1分流空気を第1設定温度に冷却して中圧塔導入空気とし、第2分流空気を前記第1設定温度より高い第2設定温度に冷却して冷膨張用空気とし、さらに、第3分流空気を前記第2設定温度より高い第3設定温度に冷却して温膨張用空気とする冷却工程と、前記冷膨張用空気を前記第1設定圧力より低い第2設定圧力に断熱膨張させることにより第1低温空気とする第1膨張工程と、前記温膨張用空気を前記第2設定圧力に断熱膨張させることにより前記第1設定温度より高い温度の第2低温空気とする第2膨張工程と、該第1低温空気の一部を前記中圧塔に導入する工程と、該第1低温空気の残部と前記第2低温空気とを温度回復させて帰還空気とする昇温工程と、該帰還空気を昇圧して前記昇圧帰還空気とする循環圧縮工程と、前記中圧塔導入空気を前記中圧塔に導入する工程とを備えていることを特徴とする空気液化分離方法。
- 前記循環空気を、前記第1設定圧力より高い圧力に昇圧する循環空気昇圧工程を備えていることを特徴とする請求項1又は2記載の空気液化分離方法。
- 圧縮、精製、冷却した原料空気を中圧塔及び低圧塔にて低温蒸留することにより少なくとも液体酸素を製品として採取する空気液化分離装置において、原料空気の全量を前記中圧塔の運転圧力より高い第1設定圧力に昇圧して昇圧原料空気とする原料空気圧縮機と、該昇圧原料空気から不純物を吸着除去して昇圧精製空気とする吸着装置と、該昇圧精製空気と後述する昇圧帰還空気とを合流させて循環空気とする循環空気合流管路と、該循環空気を2分流した第1分流空気を第1設定温度に冷却して中圧塔導入空気とし、第2分流空気を前記第1設定温度より高い第2設定温度に冷却して膨張用空気とする主熱交換器と、該膨張用空気を前記第1設定圧力より低い第2設定圧力に断熱膨張させて低温空気とする膨張タービンと、該低温空気の一部を前記中圧塔に導入する配管と、該低温空気の残部を前記主熱交換器で温度回復させた帰還空気を昇圧して前記昇圧帰還空気とする循環圧縮機と、前記中圧塔導入空気を前記中圧塔に導入する配管とを備えていることを特徴とする空気液化分離装置。
- 圧縮、精製、冷却した原料空気を中圧塔及び低圧塔にて低温蒸留することにより少なくとも液体酸素を製品として採取する空気液化分離装置において、原料空気の全量を前記中圧塔の運転圧力より高い第1設定圧力に昇圧して昇圧原料空気とする原料空気圧縮機と、該昇圧原料空気から不純物を吸着除去して昇圧精製空気とする吸着装置と、該昇圧精製空気と後述する昇圧帰還空気とを合流させて循環空気とする循環空気合流管路と、該循環空気を3分流した第1分流空気を第1設定温度に冷却して中圧塔導入空気とし、第2分流空気を前記第1設定温度より高い第2設定温度に冷却して冷膨張用空気とし、さらに、第3分流空気を前記第2設定温度より高い第3設定温度に冷却して温膨張用空気とする主熱交換器と、前記冷膨張用空気を前記第1設定圧力より低い第2設定圧力に断熱膨張させて第1低温空気とする冷膨張タービンと、前記温膨張用空気を前記第2設定圧力に断熱膨張させて第2低温空気とする温膨張タービンと、前記第1低温空気の一部を前記中圧塔に導入する配管と、該第1低温空気の残部と前記第2低温空気とを前記主熱交換器で温度回復させた帰還空気を昇圧して前記昇圧帰還空気とする循環圧縮機と、前記中圧塔導入空気を前記中圧塔に導入する配管とを備えていることを特徴とする空気液化分離装置。
- 前記循環空気を、前記第1設定圧力より高い圧力に昇圧する循環空気圧縮機を備えていることを特徴とする請求項4又は5記載の空気液化分離装置。
- 前記循環空気昇圧機は、前記膨張タービンに設けられた膨張タービン制動ブロワであることを特徴とする請求項6記載の空気液化分離装置。
- 前記膨張タービンの制動を、ブロワ、発電機、油圧ポンプのいずれかで行うことを特徴とする請求項4乃至6いずれか1項記載の空気液化分離装置。
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JP2009173323A JP5643491B2 (ja) | 2009-07-24 | 2009-07-24 | 空気液化分離方法及び装置 |
CN201080032477.8A CN102472575B (zh) | 2009-07-24 | 2010-07-20 | 空气液化分离方法及装置 |
PCT/JP2010/062158 WO2011010630A1 (ja) | 2009-07-24 | 2010-07-20 | 空気液化分離方法及び装置 |
KR1020117028238A KR20120040685A (ko) | 2009-07-24 | 2010-07-20 | 공기 액화 분리 방법 및 장치 |
US13/386,466 US20120131951A1 (en) | 2009-07-24 | 2010-07-20 | Air liquefaction separation method and apparatus |
TW099124121A TWI525298B (zh) | 2009-07-24 | 2010-07-22 | Air liquefaction separation method and device |
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TWI574725B (zh) * | 2014-06-12 | 2017-03-21 | 氣體產品及化學品股份公司 | 徑向流吸附器'u'架構 |
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US9518778B2 (en) * | 2012-12-26 | 2016-12-13 | Praxair Technology, Inc. | Air separation method and apparatus |
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- 2010-07-20 KR KR1020117028238A patent/KR20120040685A/ko not_active Application Discontinuation
- 2010-07-20 WO PCT/JP2010/062158 patent/WO2011010630A1/ja active Application Filing
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JP5643491B2 (ja) | 2014-12-17 |
KR20120040685A (ko) | 2012-04-27 |
WO2011010630A1 (ja) | 2011-01-27 |
TWI525298B (zh) | 2016-03-11 |
TW201109602A (en) | 2011-03-16 |
CN102472575B (zh) | 2014-11-05 |
CN102472575A (zh) | 2012-05-23 |
US20120131951A1 (en) | 2012-05-31 |
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