JP6105568B2 - アルキレンオキシドの分離システム、その方法及びその装置 - Google Patents
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- 238000000034 method Methods 0.000 title claims description 50
- 125000002947 alkylene group Chemical group 0.000 title description 6
- 238000000926 separation method Methods 0.000 title description 6
- GOOHAUXETOMSMM-UHFFFAOYSA-N Propylene oxide Chemical compound CC1CO1 GOOHAUXETOMSMM-UHFFFAOYSA-N 0.000 claims description 121
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 105
- 239000002904 solvent Substances 0.000 claims description 96
- DKGAVHZHDRPRBM-UHFFFAOYSA-N Tert-Butanol Chemical compound CC(C)(C)O DKGAVHZHDRPRBM-UHFFFAOYSA-N 0.000 claims description 55
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 claims description 48
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 44
- 230000008569 process Effects 0.000 claims description 31
- 239000000203 mixture Substances 0.000 claims description 23
- 238000005406 washing Methods 0.000 claims description 20
- 238000000895 extractive distillation Methods 0.000 claims description 15
- 239000008346 aqueous phase Substances 0.000 claims description 13
- 238000010926 purge Methods 0.000 claims description 12
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- 239000012535 impurity Substances 0.000 description 32
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- 239000000047 product Substances 0.000 description 21
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- 150000001241 acetals Chemical class 0.000 description 11
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- 238000006243 chemical reaction Methods 0.000 description 8
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- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 5
- 239000010935 stainless steel Substances 0.000 description 5
- 229910001220 stainless steel Inorganic materials 0.000 description 5
- 239000004215 Carbon black (E152) Substances 0.000 description 4
- WSFSSNUMVMOOMR-NJFSPNSNSA-N methanone Chemical compound O=[14CH2] WSFSSNUMVMOOMR-NJFSPNSNSA-N 0.000 description 4
- 230000003647 oxidation Effects 0.000 description 4
- 238000007254 oxidation reaction Methods 0.000 description 4
- 238000005192 partition Methods 0.000 description 4
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 3
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 description 3
- IKHGUXGNUITLKF-XPULMUKRSA-N acetaldehyde Chemical compound [14CH]([14CH3])=O IKHGUXGNUITLKF-XPULMUKRSA-N 0.000 description 3
- 125000004432 carbon atom Chemical group C* 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
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- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 3
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- 239000001282 iso-butane Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
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- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 3
- 229910000975 Carbon steel Inorganic materials 0.000 description 2
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 2
- YNQLUTRBYVCPMQ-UHFFFAOYSA-N Ethylbenzene Chemical compound CCC1=CC=CC=C1 YNQLUTRBYVCPMQ-UHFFFAOYSA-N 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- NBBJYMSMWIIQGU-UHFFFAOYSA-N Propionic aldehyde Chemical compound CCC=O NBBJYMSMWIIQGU-UHFFFAOYSA-N 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 125000002015 acyclic group Chemical group 0.000 description 2
- 150000001298 alcohols Chemical class 0.000 description 2
- 150000001336 alkenes Chemical class 0.000 description 2
- 230000005204 bell stage Effects 0.000 description 2
- 239000010962 carbon steel Substances 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- RWGFKTVRMDUZSP-UHFFFAOYSA-N cumene Chemical compound CC(C)C1=CC=CC=C1 RWGFKTVRMDUZSP-UHFFFAOYSA-N 0.000 description 2
- 229910001882 dioxygen Inorganic materials 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 150000002924 oxiranes Chemical class 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 239000013638 trimer Substances 0.000 description 2
- 125000000008 (C1-C10) alkyl group Chemical group 0.000 description 1
- JDSQBDGCMUXRBM-UHFFFAOYSA-N 2-[2-(2-butoxypropoxy)propoxy]propan-1-ol Chemical compound CCCCOC(C)COC(C)COC(C)CO JDSQBDGCMUXRBM-UHFFFAOYSA-N 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 1
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 1
- 239000004721 Polyphenylene oxide Substances 0.000 description 1
- YHNODGMSRAJJLU-UHFFFAOYSA-N acetaldehyde;2-methyloxirane Chemical compound CC=O.CC1CO1 YHNODGMSRAJJLU-UHFFFAOYSA-N 0.000 description 1
- 238000007171 acid catalysis Methods 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 125000003158 alcohol group Chemical group 0.000 description 1
- 125000000217 alkyl group Chemical group 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000005815 base catalysis Methods 0.000 description 1
- ZTQSAGDEMFDKMZ-UHFFFAOYSA-N butyric aldehyde Natural products CCCC=O ZTQSAGDEMFDKMZ-UHFFFAOYSA-N 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 238000004581 coalescence Methods 0.000 description 1
- 239000012809 cooling fluid Substances 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- REHUGJYJIZPQAV-UHFFFAOYSA-N formaldehyde;methanol Chemical compound OC.O=C REHUGJYJIZPQAV-UHFFFAOYSA-N 0.000 description 1
- 238000004508 fractional distillation Methods 0.000 description 1
- 238000005194 fractionation Methods 0.000 description 1
- 239000011491 glass wool Substances 0.000 description 1
- IXCSERBJSXMMFS-UHFFFAOYSA-N hydrogen chloride Substances Cl.Cl IXCSERBJSXMMFS-UHFFFAOYSA-N 0.000 description 1
- 229910000041 hydrogen chloride Inorganic materials 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 150000002576 ketones Chemical class 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 229920000570 polyether Polymers 0.000 description 1
- 229920005862 polyol Polymers 0.000 description 1
- 150000003077 polyols Chemical class 0.000 description 1
- 229920001451 polypropylene glycol Polymers 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 239000002243 precursor Substances 0.000 description 1
- ALDITMKAAPLVJK-UHFFFAOYSA-N prop-1-ene;hydrate Chemical group O.CC=C ALDITMKAAPLVJK-UHFFFAOYSA-N 0.000 description 1
- RUOJZAUFBMNUDX-UHFFFAOYSA-N propylene carbonate Chemical compound CC1COC(=O)O1 RUOJZAUFBMNUDX-UHFFFAOYSA-N 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 230000002277 temperature effect Effects 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
- 238000010977 unit operation Methods 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D3/00—Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping
- B01D3/34—Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping with one or more auxiliary substances
- B01D3/40—Extractive distillation
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D301/00—Preparation of oxiranes
- C07D301/02—Synthesis of the oxirane ring
- C07D301/03—Synthesis of the oxirane ring by oxidation of unsaturated compounds, or of mixtures of unsaturated and saturated compounds
- C07D301/19—Synthesis of the oxirane ring by oxidation of unsaturated compounds, or of mixtures of unsaturated and saturated compounds with organic hydroperoxides
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D301/00—Preparation of oxiranes
- C07D301/32—Separation; Purification
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D303/00—Compounds containing three-membered rings having one oxygen atom as the only ring hetero atom
- C07D303/02—Compounds containing oxirane rings
- C07D303/04—Compounds containing oxirane rings containing only hydrogen and carbon atoms in addition to the ring oxygen atoms
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Epoxy Compounds (AREA)
Description
実施例1は、図1及び図2に示されるようなパイロットユニット溶媒軽質塔1が25psigで最初に操作される場合の試験期間を説明する。粗プロピレンオキシドを含有する供給流10(PO/TBA法からの中間流)を溶媒軽質塔1にその塔の中間部で供給した。表5は、供給流中のキー不純物の濃度を示し、それぞれ全組成物の質量%として表現される。
溶媒軽質塔1の圧力が25psigから30psigに増加するに連れて、溶媒軽質塔1での操作温度もまた約5℃増加した。より高い塔温度では、多量のヘミアセタール及び/又はアセタールがアルデヒド+アルコールの形態に転化する。その後、アルデヒド及びアルコールは溶媒軽質塔の塔頂部で留出し、水洗浄及び蒸気パージの両方によって除去する。
溶媒軽質塔1の給送における水、メタノールの量及び/又はグリコール濃度を低下させることにより、予想外に有益な結果もまた得ることができる。二つのメタノール(MeOH)濃度を、実施例1に記載するように同じパイロットユニットを用いて試験した。一の試験は、表5に示すように、0.1172質量%のMeOHを含有するプロピレンオキシド給送を用いた。他の試験は、表9に示すように、0.0032質量%のMeOHを有する給送を用いた。プロピレンオキシド供給流を含む供給流は、PO/TBA法からの粗PO流であった。表5及び表9の両方は、PO/TBA法からの粗PO流の全組成物の質量%としてそれぞれ表される、その供給流中のキー不純物の濃度を示す。
Claims (9)
- (i)プロピレンオキシド、tert−ブタノール及び水を含む粗プロピレンオキシド流(10)を、25/0.1450超から50/0.1450kPa(ゲージ圧力)(25超から50psig)までの範囲の塔底部圧力で操作する抽出蒸留塔(1)であって、抽出蒸留塔(1)の塔頂部が水洗浄装置(2)に流体連結されているものに流入させる工程、
(ii)前記粗プロピレンオキシド流(10)を塔頂流(11)および塔底部生成物流(15)に分離する工程、
を含む方法であって、
塔頂流(11)が部分的に凝縮され、蒸気流(12)、及び洗浄入口流(13)としての凝縮部分が得られ、及び
静的ミキサ中で、洗浄入口流(13)の少なくとも一部が、水およびパラフィン溶媒と混合され、混合物が形成され、及び該混合物が水洗浄装置(2)に供給され、及び
蒸気流(12)が凝縮されて、蒸気パージ流(71)及び液体パージ流(72)が得られ、
水洗浄装置(2)は、前記混合物の液滴が相互に合体し、そして上側の有機相及び下側の水相に分離することを可能にし、
前記上側の有機相を抽出蒸留塔(1)の塔頂部に還流の一部として供給し、且つ前記下側の水相をさらなる処理のために除去することを特徴とする方法。 - 抽出蒸留塔(1)が、再沸器(5)と流体連結され、
再沸蒸気流(16)が、再沸器(5)中に流入された塔底生成物流(15)から形成され、及び
再沸蒸気流(16)は、抽出蒸留塔(1)にフィードバックされる、
ことを特徴とする請求項1に記載の方法。 - 前記抽出蒸留塔(1)において抽出溶媒としてC8〜C20パラフィンを使用する請求項1又は2に記載の方法。
- 前記抽出蒸留塔(1)を、25/0.1450から35/0.1450kPa(ゲージ圧力)(25から35psig)の範囲の塔底部圧力で操作することを特徴とする請求項1に記載の方法。
- 粗プロピレンオキシド流(10)が、粗プロピレンオキシド流(10)の全組成物に対して0.001〜0.5質量%のメタノールを含む請求項1に記載の方法。
- 再沸器(5)中に流入された塔底生成物流(15)から再沸器底部生成物流(17)が形成され、及び再沸器底部生成物流(17)が溶媒除去塔(3)に流入されて塔頂部生成物流(34)が得られ、塔頂部生成物流(34)は、50ppm未満のホルムアルデヒドを含む請求項2に記載の方法。
- 再沸器(5)中に流入された塔底生成物流(15)から再沸器底部生成物流(17)が形成され、及び再沸器底部生成物流(17)が溶媒除去塔(3)に流入されて塔頂部生成物流(34)が得られ、塔頂部生成物流(34)は、30ppm未満のホルムアルデヒドを含む請求項2に記載の方法。
- 抽出蒸留塔(1)が再沸器(5)と流体連結しており、該再沸器(5)を70〜150℃の範囲の温度で操作する請求項1に記載の方法。
- (i)プロピレンオキシド、tert−ブタノール及び水を含む粗プロピレンオキシド流を、70〜150℃の範囲の塔底部温度で操作する抽出蒸留塔であって、該抽出蒸留塔塔頂部が水洗浄装置に流体連結されているものに通過させる工程、
(ii)前記粗プロピレンオキシド流を塔頂流および塔底部生成物流に分離し、前記塔頂流の一部を静的ミキサ中で水およびパラフィン溶媒と混合して混合物を形成させ、該混合物を水洗浄装置に供給する工程、を含む方法であって、
水洗浄装置で、前記混合物の液滴が合体し、且つ上側の有機相及び下側の水相に分離され、
前記上側の有機相を抽出蒸留塔塔頂部に還流の一部として供給し、且つ前記下側の水相をさらなる処理のために除去することを特徴とする方法。
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US13/155,136 | 2011-06-07 | ||
US13/155,136 US8981133B2 (en) | 2011-06-07 | 2011-06-07 | Alkylene oxide separation systems, methods, and apparatuses |
PCT/US2012/041349 WO2012170685A1 (en) | 2011-06-07 | 2012-06-07 | Methods for alkylene oxide separation using extractive destillation columns |
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JP2014517011A JP2014517011A (ja) | 2014-07-17 |
JP2014517011A5 JP2014517011A5 (ja) | 2015-11-12 |
JP6105568B2 true JP6105568B2 (ja) | 2017-03-29 |
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EP (1) | EP2718274B1 (ja) |
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KR (1) | KR101627439B1 (ja) |
CN (1) | CN103562192B (ja) |
BR (1) | BR112013031148A2 (ja) |
ES (1) | ES2658153T3 (ja) |
WO (1) | WO2012170685A1 (ja) |
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US9593090B2 (en) * | 2013-07-29 | 2017-03-14 | Lyondell Chemical Technology, L.P. | Alkylene oxide separation systems, methods, and apparatuses |
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CN109851590A (zh) * | 2017-11-30 | 2019-06-07 | 中国石油化工股份有限公司 | 环氧丙烷的纯化方法 |
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CN112694455B (zh) * | 2019-10-23 | 2023-08-08 | 中国石油化工股份有限公司 | 加氢脱除醛和酮的系统及方法 |
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FR2215418B1 (ja) | 1973-01-26 | 1976-05-14 | Rhone Progil | |
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-
2011
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EP2718274B1 (en) | 2018-01-24 |
WO2012170685A1 (en) | 2012-12-13 |
JP2014517011A (ja) | 2014-07-17 |
KR20140044847A (ko) | 2014-04-15 |
US20120312680A1 (en) | 2012-12-13 |
CN103562192B (zh) | 2016-08-17 |
US8981133B2 (en) | 2015-03-17 |
ES2658153T3 (es) | 2018-03-08 |
EP2718274A1 (en) | 2014-04-16 |
CN103562192A (zh) | 2014-02-05 |
BR112013031148A2 (pt) | 2016-08-16 |
KR101627439B1 (ko) | 2016-06-03 |
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