JP5798127B2 - 炭化水素ガスの処理 - Google Patents
炭化水素ガスの処理 Download PDFInfo
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Description
Claims (6)
- メタン及びより高揮発性の成分、C2成分、C3成分及びより重質の炭化水素成分を含有するガスストリーム(51)を、揮発性の残留ガス留分(68b)と、前記C2成分、C3成分及びより重質の炭化水素成分の大部分を含有する相対的に低揮発性の留分(71b)とに分離するための方法であって、
(a)前記ガスストリーム(51,61)を加圧下で冷却して(20,23)、冷却したストリーム(64)を供給し;
(b)前記冷却したストリーム(64)をより低圧力に膨張させる(14)ことで、それをさらに冷却し(64a);そして、
(c)前記さらに冷却されたストリーム(64a)を第1蒸留塔(28)に送り、前記低圧力で分留することによって、前記相対的に低揮発性の留分(71b)の成分を回収する;
ことを含む方法において、
(1)前記さらに冷却され膨張したストリーム(64a)は、前記第1蒸留塔(28)に、塔中間部供給位置から送られ;
(2)蒸留液ストリーム(72)が、前記第1蒸留塔(28)の前記塔中間部供給位置(64a)の下方にある領域から取り出され;
(3)前記蒸留液ストリーム(72)は、加熱され(31)、その後、第2蒸留塔(32)に送られ(72b)、頂部蒸気ストリーム(73)と底部液ストリーム(78)に分留され;
(4)前記頂部蒸気ストリーム(73)は、冷却され(34)、実質的にすべて又は部分的に凝縮することで、凝縮ストリーム(75)を形成し;
(5)前記凝縮ストリーム(75,75a)は、第1部分(76)と第2部分(77)に分けられ、前記第1部分(76)は前記第2蒸留塔(32)に最上部供給位置から送られ;
(6)前記第2部分(77,77a)は、前記蒸留液ストリーム(72)が前記第1蒸留塔(28)から取り出される前記領域の下方にある塔下部供給位置から前記第1蒸留塔(28)に送られ;
(7)前記底部液ストリーム(78)は、冷却され(31)、それにより工程(3)の加熱作業(31)の少なくとも一部を提供し;
(8)前記冷却された底部液ストリーム(78c)は、前記第1蒸留塔(28)に最上部供給位置から送られ;
(9)前記第2蒸留塔(32)に向かう前記加熱された蒸留液ストリーム(72b)及び前記第1部分(76)の量と温度は、前記第2蒸留塔(32)の頂部温度を、前記頂部蒸気ストリーム(73)がC3炭化水素成分及びより高揮発性の成分を主とし、前記底部液ストリーム(78)がC4−C5炭化水素成分を主とするような温度に維持することに有効であり;そして、
(10)前記第1蒸留塔(28)に向かう前記さらに冷却され膨張したストリーム(64a)、前記第2部分(77a)及び前記冷却された底部液ストリーム(78c)の量と温度は、前記第1蒸留塔(28)の頂部温度を、前記相対的に低揮発性の留分(71b)中の成分の大部分が回収される温度に維持することに有効である、方法。 - メタン及びより高揮発性の成分、C 2 成分、C 3 成分及びより重質の炭化水素成分を含有するガスストリーム(51)を、揮発性の残留ガス留分(68b)と、前記C 2 成分、C 3 成分及びより重質の炭化水素成分の大部分を含有する相対的に低揮発性の留分(71b)とに分離するための方法であって、
(a)前記ガスストリーム(51,61)を加圧下で冷却して(20)、冷却したストリームを供給し;
(b)前記冷却したストリームをより低圧力に膨張させることで、それをさらに冷却し;そして、
(c)前記さらに冷却されたストリームを第1蒸留塔(28)に送り、前記低圧力で分留することによって、前記相対的に低揮発性の留分(71b)の成分を回収する;
ことを含む方法において、前記ガスストリーム(61)を十分に冷却して(20)部分的に凝縮し(61a);そして、
(1)前記部分的に凝縮したガスストリーム(61a)を分離し(21)、それにより蒸気ストリーム(62,64)と少なくとも1つの液体ストリーム(63)を供給し;
(2)前記蒸気ストリーム(64)は、前記低圧力に膨張され(14),(64a)、前記第1蒸留塔(28)に塔中間部供給位置から供給され;
(3)前記少なくとも1つの液体ストリーム(63)の少なくとも一部は、前記低圧力に膨張され(22),(63a)、前記第1蒸留塔(28)に、前記塔中間部供給位置(64a)の下方にある塔中間下部の供給位置(63a)から供給され;
(4)蒸留液ストリーム(72)が、前記第1蒸留塔(28)の前記塔中間部供給位置(64a)の下方であって前記塔中間下部供給位置(63a)の上方にある領域から取り出され;
(5)前記蒸留液ストリーム(72)は、加熱され(31)、その後、第2蒸留塔(32)に送られ(72b)、頂部蒸気ストリーム(73))と底部液ストリーム(78)に分留され;
(6)前記頂部蒸気ストリーム(73)は、冷却され(34)、実質的にすべて又は部分的に凝縮することで、凝縮ストリーム(75)を形成し;
(7)前記凝縮ストリーム(75,75a)は、第1部分(76)と第2部分(77)に分けられ、前記第1部分(76)は前記第2蒸留塔(32)に最上部供給位置から送られ;
(8)前記第2部分(77,77a)は、前記蒸留液ストリーム(72)が前記第1蒸留塔(28)から取り出される前記領域の下方にある塔下部供給位置から前記第1蒸留塔(28)に送られ;
(9)前記底部液ストリーム(78)は、冷却され(31)、それにより工程(5)の加熱作業(31)の少なくとも一部を提供し;
(10)前記冷却された底部液ストリーム(78c)は、前記第1蒸留塔(28)に最上部供給位置から送られ;
(11)前記第2蒸留塔(32)に向かう前記加熱された蒸留液ストリーム(72b)及び前記第1部分(76)の量と温度は、前記第2蒸留塔(32)の頂部温度を、前記頂部蒸気ストリーム(73)がC 3 炭化水素成分及びより高揮発性の成分を主とし、前記底部液ストリーム(78)がC 4 −C 5 炭化水素成分を主とするような温度に維持することに有効であり;そして、
(12)前記第1蒸留塔(28)に向かう前記膨張した蒸気ストリーム(64a)、前記少なくとも1つの液体ストリームの前記膨張した少なくとも一部(63a)、前記第2部分(77a)及び前記冷却された底部液ストリーム(78c)の量と温度は、前記第1蒸留塔(28)の頂部温度を、前記相対的に低揮発性の留分(71b)中の成分の大部分が回収される温度に維持することに有効である、方法。 - メタン及びより高揮発性の成分、C 2 成分、C 3 成分及びより重質の炭化水素成分を含有するガスストリーム(51)を、揮発性の残留ガス留分(68c)と、前記C 2 成分、C 3 成分及びより重質の炭化水素成分の大部分を含有する相対的に低揮発性の留分(71b)とに分離するための方法であって、
(a)前記ガスストリーム(51,61)を加圧下で冷却して(20,23)、冷却したストリーム(64)を供給し;
(b)前記冷却したストリーム(64)をより低圧力に膨張させることで、それをさらに冷却し;そして、
(c)前記さらに冷却されたストリームを第1蒸留塔(28)に送り、前記低圧力で分留することによって、前記相対的に低揮発性の留分(71b)の成分を回収する;
ことを含む方法において、冷却の後、前記冷却したストリーム(64)を第1(66)及び第2(67)のストリームに分割し;そして、
(1)前記第2ストリーム(67)は、前記低圧力に膨張され(14),(67a)、前記第1蒸留塔(28)に塔中間部供給位置から供給され;
(2)蒸留液ストリーム(72)が、前記第1蒸留塔(28)の前記塔中間部供給位置(67a)の下方にある領域から取り出され;
(3)前記蒸留液ストリーム(72)は、加熱され(31)、その後、第2蒸留塔(32)に送られ(72b)、頂部蒸気ストリーム(73)と底部液ストリーム(78)に分留され;
(4)前記頂部蒸気ストリーム(73)は、冷却され(34)、実質的にすべて又は部分的に凝縮することで、凝縮ストリーム(75)を形成し;
(5)前記凝縮ストリーム(75,75a)は、第1部分(76)と第2部分(77)に分けられ、前記第1部分(76)は前記第2蒸留塔(32)に最上部供給位置から送られ;
(6)前記第2部分(77,77a)は、前記蒸留液ストリーム(72)が前記第1蒸留塔(28)から取り出される前記領域の下方にある塔下部供給位置から前記第1蒸留塔(28)に送られ;
(7)前記底部液ストリーム(78)は、冷却され(31)、それにより工程(3)の加熱作業(31)の少なくとも一部を提供し;
(8)前記第1ストリーム(66)は、中間圧力に膨張され(26),(66a)、その後、前記冷却された底部液ストリーム(78b)と合流し、合流ストリーム(79)を形成し;
(9)前記合流ストリーム(79)は、冷却され(27)、その後、前記低圧力に膨張され(40),(79b);
(10)前記膨張され冷却された合流ストリーム(79b)は、前記第1蒸留塔(28)に最上部供給位置から送られ;
(11)前記第2蒸留塔(32)に向かう前記加熱された蒸留液ストリーム(72b)及び前記第1部分(76)の量と温度は、前記第2蒸留塔(32)の頂部温度を、前記頂部蒸気ストリーム(73)がC 3 炭化水素成分及びより高揮発性の成分を主とし、前記底部液ストリーム(78)がC 4 −C 5 炭化水素成分を主とするような温度に維持することに有効であり;そして、
(12)前記第1蒸留塔(28)に向かう前記膨張した第2ストリーム(67a)、前記第2部分(77a)及び前記膨張され冷却された合流ストリーム(79b)の量と温度は、前記第1蒸留塔(28)の頂部温度を、前記相対的に低揮発性の留分(71b)中の成分の大部分が回収される温度に維持することに有効である、方法。 - メタン及びより高揮発性の成分、C 2 成分、C 3 成分及びより重質の炭化水素成分を含有するガスストリーム(51)を、揮発性の残留ガス留分(68c)と、前記C 2 成分、C 3 成分及びより重質の炭化水素成分の大部分を含有する相対的に低揮発性の留分(71b)とに分離するための方法であって、
(a)前記ガスストリーム(51,61)を加圧下で冷却して(20)、冷却したストリームを供給し;
(b)前記冷却したストリームをより低圧力に膨張させることで、それをさらに冷却し;そして、
(c)前記さらに冷却されたストリームを第1蒸留塔(28)に送り、前記低圧力で分留することによって、前記相対的に低揮発性の留分(71b)の成分を回収する;
ことを含む方法において、前記ガスストリーム(61)を十分に冷却して(20)部分的に凝縮し(61a);そして、
(1)前記部分的に凝縮したガスストリーム(61a)を分離し(21)、それにより蒸気ストリーム(62,64)と少なくとも1つの液体ストリーム(63)を供給し;
(2)前記蒸気ストリーム(64)は、その後、第1(66)及び第2(67)のストリームに分割し;
(3)前記第2ストリーム(67)は、前記低圧力に膨張され(14),(67a)、前記第1蒸留塔(28)に塔中間部供給位置から供給され;
(4)前記少なくとも1つの液体ストリーム(63)の少なくとも一部は、前記低圧力に膨張され(22)、前記第1蒸留塔(28)に、前記塔中間部供給位置(67a)の下方にある塔中間下部の供給位置(63a)から供給され;
(5)蒸留液ストリーム(72)が、前記第1蒸留塔(28)の前記塔中間部供給位置(67a)の下方であって前記塔中間下部供給位置(63a)の上方にある領域から取り出され;
(6)前記蒸留液ストリーム(72)は、加熱され(31)、その後、第2蒸留塔(32)に送られ(72b)、頂部蒸気ストリーム(73)と底部液ストリーム(78)に分留され;
(7)前記頂部蒸気ストリーム(73)は、冷却され(34)、実質的にすべて又は部分的に凝縮することで、凝縮ストリーム(75)を形成し;
(8)前記凝縮ストリーム(75,75a)は、第1部分(76)と第2部分(77)に分けられ、前記第1部分(76)は前記第2蒸留塔(32)に最上部供給位置から送られ;
(9)前記第2部分(77,77a)は、前記蒸留液ストリーム(72)が前記第1蒸留塔(28)から取り出される前記領域の下方にある塔下部供給位置から前記第1蒸留塔(28)に送られ;
(10)前記底部液ストリーム(78)は、冷却され(31)、それにより工程(6)の加熱作業(31)の少なくとも一部を提供し;
(11)前記第1ストリーム(66)は、中間圧力に膨張され(26),(66a)、その後、前記冷却された底部液ストリーム(78b)と合流し、合流ストリーム(79)を形成し;
(12)前記合流ストリーム(79)は、冷却され(27)、その後、前記低圧力に膨張され(40),(79b);
(13)前記膨張され冷却された合流ストリーム(79b)は、前記第1蒸留塔(28)に最上部供給位置から送られ;
(14)前記第2蒸留塔(32)に向かう前記加熱された蒸留液ストリーム(72b)及び前記第1部分(76)の量と温度は、前記第2蒸留塔(32)の頂部温度を、前記頂部蒸気ストリーム(73)がC 3 炭化水素成分及びより高揮発性の成分を主とし、前記底部液ストリーム(78)がC 4 −C 5 炭化水素成分を主とするような温度に維持することに有効であり;そして、
(15)前記第1蒸留塔(28)に向かう前記膨張した第2ストリーム(67a)、前記少なくとも1つの液体ストリームの前記膨張した少なくとも一部(63a)、前記第2部分(77a)及び前記膨張され冷却された合流ストリーム(79b)の量と温度は、前記第1蒸留塔(28)の頂部温度を、前記相対的に低揮発性の留分(71b)中の成分の大部分が回収される温度に維持することに有効である、方法。 - 前記少なくとも1つの液体ストリームの前記膨張した少なくとも一部(65a)は、加熱され(23)、その後、前記塔中間部供給位置の下方にある別の前記塔中間下部供給位置から前記第1蒸留塔(28)に供給される、請求項2または4に記載の方法。
- (a)前記頂部蒸気ストリーム(73)は、十分に冷却されて(34)部分的に凝縮し(73a);
(b)前記部分的に凝縮した頂部蒸気ストリーム(73a)は、分離され(35)、それにより残留蒸気ストリーム(74)と前記凝縮したストリーム(75)を供給し;そして、
(c)前記残留蒸気ストリーム(74,74a)は、前記第1蒸留塔(28)から前記蒸留液ストリーム(72)を取り出す前記領域の下方にあるさらなる塔下部供給位置から、前記第1蒸留塔(28)に送られる、請求項1、2、3、4または5に記載の方法。
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US9021832B2 (en) | 2015-05-05 |
BR112012017390A2 (pt) | 2016-04-19 |
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MY158951A (en) | 2016-11-30 |
PE20130058A1 (es) | 2013-02-04 |
CO6571915A2 (es) | 2012-11-30 |
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