JP5011501B2 - 液体天然ガス処理 - Google Patents
液体天然ガス処理 Download PDFInfo
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- JP5011501B2 JP5011501B2 JP2008524060A JP2008524060A JP5011501B2 JP 5011501 B2 JP5011501 B2 JP 5011501B2 JP 2008524060 A JP2008524060 A JP 2008524060A JP 2008524060 A JP2008524060 A JP 2008524060A JP 5011501 B2 JP5011501 B2 JP 5011501B2
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- 239000003949 liquefied natural gas Substances 0.000 title claims description 50
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 50
- 238000000034 method Methods 0.000 claims description 24
- 229930195733 hydrocarbon Natural products 0.000 claims description 17
- 150000002430 hydrocarbons Chemical class 0.000 claims description 13
- 238000010992 reflux Methods 0.000 claims description 10
- 239000007788 liquid Substances 0.000 claims description 9
- 239000003507 refrigerant Substances 0.000 claims description 4
- 239000012530 fluid Substances 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 3
- 238000005086 pumping Methods 0.000 claims description 2
- 239000000284 extract Substances 0.000 claims 1
- 238000000926 separation method Methods 0.000 description 17
- 238000011084 recovery Methods 0.000 description 16
- 239000007789 gas Substances 0.000 description 7
- 239000003345 natural gas Substances 0.000 description 7
- OTMSDBZUPAUEDD-UHFFFAOYSA-N Ethane Chemical compound CC OTMSDBZUPAUEDD-UHFFFAOYSA-N 0.000 description 5
- 238000001816 cooling Methods 0.000 description 5
- -1 methane hydrocarbons Chemical class 0.000 description 4
- 238000010977 unit operation Methods 0.000 description 3
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000005194 fractionation Methods 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- 239000006200 vaporizer Substances 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- 239000001273 butane Substances 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000002737 fuel gas Substances 0.000 description 1
- 239000012263 liquid product Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- IJDNQMDRQITEOD-UHFFFAOYSA-N n-butane Chemical compound CCCC IJDNQMDRQITEOD-UHFFFAOYSA-N 0.000 description 1
- OFBQJSOFQDEBGM-UHFFFAOYSA-N n-pentane Natural products CCCCC OFBQJSOFQDEBGM-UHFFFAOYSA-N 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000001294 propane Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Description
天然ガス液(NGL)は、従来のプロセスで用いられているような外部冷却又は供給原料ターボ膨張機を必要とすることなく、低圧液化天然ガス(LNG)から回収される。図1を参照すると、プロセス100は、入ってくるLNG供給原料ストリーム1が、非常に低圧の、典型的には0〜5psig(0〜34.5kPa)の範囲にあり、−200゜F(−128.9℃)未満の温度のポンプ2に入ることを示している。ポンプ2は、それがLNGの数百ポンドの圧力を、およそ100〜500psig(0.69〜3.45MPa)、好ましくは300〜350psig(2.07〜2.41MPa)のプロセス範囲に増大させることができるのであれば、LNGのポンプ操作に典型的に用いられる任意のポンプ設計でよい。ポンプ2から得られたストリーム3は、物理的にコールドボックス4に供給され、そこで、コンプレッサ8の放出物から得られる実質的にNGLを含まないライン9中の残余ガスと交差交換される。コールドボックス4内で追加の冷却が必要である状況では、外部冷媒ライン32が使用されることができ、冷却能力が増大される。外部冷媒の厳密な性質は本発明において重要ではないが、高圧のLNGストリームを使用するのが最も都合がよい可能性がある。LNG供給原料の加熱されたストリームは、ストリーム5としてコールドボックス4から除去される。
Claims (3)
- 液化天然ガス(LNG)からメタンより重い炭化水素を回収するプロセスであって、
a)100psia(0.69MPa)を超える圧力にするために、液体の、低圧LNG(液化天然ガス)をポンプで押し出すステップ;
b)ステップa)からの前記加圧された液体LNGを、前記加圧された液体LNGが熱交換されてその温度が増大される熱交換器へ導くステップ;
c)ステップb)からの前記熱交換され加圧された液体LNGを分離器に導き、第1及び第2の還流物と組み合わせて分離器ボトムストリームと共に分離器オーバーヘッドストリームを得る、ステップ;
d)前記分離器ボトムストリームを加圧した後、前記加圧された分離器ボトムストリームを第1及び第2の部分に分割するステップ;
e)前記加圧された分離器ボトムストリームの第1の部分を還流ストリームとして脱エタン塔に導くステップ;
f)前記加圧された分離器ボトムストリームの第2の部分を前記熱交換器に導くことによって、前記第2の部分を加熱するステップ;
g)前記加圧された分離器ボトムストリームの加熱された第2の部分を脱エタン塔に導くステップ;
h)メタンより重い炭化水素を脱エタン塔ボトムストリームとして抜き出すステップ;
i)脱エタン塔オーバーヘッドストリームを第2の還流物として分離器に導くステップ;
j)前記分離器からの前記分離器オーバーヘッドストリームを抜き出して、さらに、前記分離器オーバーヘッドストリームを、前記熱交換器への導入の前に圧縮し、前記加圧された液体LNGと熱交換させて、再液化され加圧されたLNGを得るステップ;及び
k)前記再液化され加圧されたLNGの一部分を第1の還流物として使用するために分離するステップ
を含む、上記プロセス。 - 外部冷媒を前記熱交換器に供給するステップをさらに含む、請求項1に記載のプロセス。
- LNGの高圧ストリームを外部冷媒として前記熱交換器に供給するステップをさらに含む、請求項2に記載のプロセス。
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US11/188,961 US7475566B2 (en) | 2002-04-03 | 2005-07-25 | Liquid natural gas processing |
US11/188,961 | 2005-07-25 | ||
PCT/US2006/028822 WO2007014209A2 (en) | 2005-07-25 | 2006-07-25 | Liquid natural gas processing |
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JP2009503424A JP2009503424A (ja) | 2009-01-29 |
JP5011501B2 true JP5011501B2 (ja) | 2012-08-29 |
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JP2008524060A Active JP5011501B2 (ja) | 2005-07-25 | 2006-07-25 | 液体天然ガス処理 |
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US (1) | US7475566B2 (ja) |
EP (1) | EP1920205B1 (ja) |
JP (1) | JP5011501B2 (ja) |
KR (1) | KR100951924B1 (ja) |
CN (1) | CN101233376B (ja) |
AU (1) | AU2006272662B2 (ja) |
BR (1) | BRPI0613903B1 (ja) |
CA (1) | CA2615987C (ja) |
ES (1) | ES2609921T3 (ja) |
MX (1) | MX2008001031A (ja) |
NZ (1) | NZ565218A (ja) |
RU (1) | RU2407966C2 (ja) |
WO (1) | WO2007014209A2 (ja) |
ZA (1) | ZA200801211B (ja) |
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MX2008001031A (es) | 2008-03-14 |
CA2615987A1 (en) | 2007-02-01 |
ZA200801211B (en) | 2009-01-28 |
RU2008106604A (ru) | 2009-09-10 |
KR20080039429A (ko) | 2008-05-07 |
EP1920205A2 (en) | 2008-05-14 |
CN101233376A (zh) | 2008-07-30 |
AU2006272662A1 (en) | 2007-02-01 |
WO2007014209A3 (en) | 2007-05-03 |
NZ565218A (en) | 2011-02-25 |
CN101233376B (zh) | 2010-12-08 |
JP2009503424A (ja) | 2009-01-29 |
US7475566B2 (en) | 2009-01-13 |
CA2615987C (en) | 2012-03-20 |
AU2006272662B2 (en) | 2009-09-10 |
US20060260356A1 (en) | 2006-11-23 |
ES2609921T3 (es) | 2017-04-25 |
RU2407966C2 (ru) | 2010-12-27 |
WO2007014209A2 (en) | 2007-02-01 |
EP1920205B1 (en) | 2016-09-07 |
KR100951924B1 (ko) | 2010-04-09 |
BRPI0613903B1 (pt) | 2019-06-04 |
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