DD222301A5 - Verfahren zur gewinnung von hochreinem 1-buten - Google Patents

Verfahren zur gewinnung von hochreinem 1-buten Download PDF

Info

Publication number: DD222301A5
Authority: DD; German Democratic Republic
Prior art keywords: butene; stage; stream; fractionation; condenser
Prior art date: 1983-07-28

Application number

DD84265726A

Other languages

German (de)

English (en)

Inventor

Renzo Comiotto

Bruno De Maglie

Original Assignee

Snam Progetti

Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)

1983-07-28

Filing date

1984-07-27

Publication date

1985-05-15

1984-07-27 Application filed by Snam Progetti filed Critical Snam Progetti

1985-05-15 Publication of DD222301A5 publication Critical patent/DD222301A5/de

Links

VXNZUUAINFGPBY-UHFFFAOYSA-N 1-Butene Chemical compound CCC=C VXNZUUAINFGPBY-UHFFFAOYSA-N 0.000 title claims abstract description 89
238000000034 method Methods 0.000 title claims abstract description 22
KAKZBPTYRLMSJV-UHFFFAOYSA-N Butadiene Chemical compound C=CC=C KAKZBPTYRLMSJV-UHFFFAOYSA-N 0.000 claims abstract description 22
238000005194 fractionation Methods 0.000 claims abstract description 17
NNPPMTNAJDCUHE-UHFFFAOYSA-N isobutane Chemical compound CC(C)C NNPPMTNAJDCUHE-UHFFFAOYSA-N 0.000 claims abstract description 16
239000001282 iso-butane Substances 0.000 claims abstract description 8
238000009833 condensation Methods 0.000 claims abstract 2
230000005494 condensation Effects 0.000 claims abstract 2
VQTUBCCKSQIDNK-UHFFFAOYSA-N Isobutene Chemical compound CC(C)=C VQTUBCCKSQIDNK-UHFFFAOYSA-N 0.000 claims description 16
239000000047 product Substances 0.000 claims description 16
238000010992 reflux Methods 0.000 claims description 6
IJDNQMDRQITEOD-UHFFFAOYSA-N sec-butylidene Natural products CCCC IJDNQMDRQITEOD-UHFFFAOYSA-N 0.000 claims description 6
IAQRGUVFOMOMEM-ARJAWSKDSA-N cis-but-2-ene Chemical compound C\C=C/C IAQRGUVFOMOMEM-ARJAWSKDSA-N 0.000 claims description 5
238000005265 energy consumption Methods 0.000 claims description 5
238000005984 hydrogenation reaction Methods 0.000 claims description 5
239000007795 chemical reaction product Substances 0.000 claims description 4
239000003795 chemical substances by application Substances 0.000 claims description 4
IAQRGUVFOMOMEM-ONEGZZNKSA-N trans-but-2-ene Chemical compound C\C=C\C IAQRGUVFOMOMEM-ONEGZZNKSA-N 0.000 claims description 4
DNIAPMSPPWPWGF-GSVOUGTGSA-N (R)-(-)-Propylene glycol Chemical class C[C@@H](O)CO DNIAPMSPPWPWGF-GSVOUGTGSA-N 0.000 claims description 2
239000000110 cooling liquid Substances 0.000 claims description 2
238000006266 etherification reaction Methods 0.000 claims description 2
239000003517 fume Substances 0.000 claims 2
150000000475 acetylene derivatives Chemical class 0.000 claims 1
239000000470 constituent Substances 0.000 claims 1
239000007858 starting material Substances 0.000 claims 1
229930195733 hydrocarbon Natural products 0.000 abstract description 11
150000002430 hydrocarbons Chemical class 0.000 abstract description 8
238000006116 polymerization reaction Methods 0.000 abstract description 3
239000004215 Carbon black (E152) Substances 0.000 abstract description 2
239000004615 ingredient Substances 0.000 abstract 1
239000007788 liquid Substances 0.000 description 14
OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 6
238000004519 manufacturing process Methods 0.000 description 5
238000004821 distillation Methods 0.000 description 4
230000006835 compression Effects 0.000 description 3
238000007906 compression Methods 0.000 description 3
AQEFLFZSWDEAIP-UHFFFAOYSA-N di-tert-butyl ether Chemical compound CC(C)(C)OC(C)(C)C AQEFLFZSWDEAIP-UHFFFAOYSA-N 0.000 description 3
239000000203 mixture Substances 0.000 description 3
-1 polyethylene Polymers 0.000 description 3
238000004230 steam cracking Methods 0.000 description 3
RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
BZLVMXJERCGZMT-UHFFFAOYSA-N Methyl tert-butyl ether Chemical compound COC(C)(C)C BZLVMXJERCGZMT-UHFFFAOYSA-N 0.000 description 2
KDKYADYSIPSCCQ-UHFFFAOYSA-N but-1-yne Chemical group CCC#C KDKYADYSIPSCCQ-UHFFFAOYSA-N 0.000 description 2
IAQRGUVFOMOMEM-UHFFFAOYSA-N but-2-ene Chemical compound CC=CC IAQRGUVFOMOMEM-UHFFFAOYSA-N 0.000 description 2
238000006243 chemical reaction Methods 0.000 description 2
230000005611 electricity Effects 0.000 description 2
239000007789 gas Substances 0.000 description 2
239000001257 hydrogen Substances 0.000 description 2
229910052739 hydrogen Inorganic materials 0.000 description 2
CHRJZRDFSQHIFI-UHFFFAOYSA-N 1,2-bis(ethenyl)benzene;styrene Chemical compound C=CC1=CC=CC=C1.C=CC1=CC=CC=C1C=C CHRJZRDFSQHIFI-UHFFFAOYSA-N 0.000 description 1
DURPTKYDGMDSBL-UHFFFAOYSA-N 1-butoxybutane Chemical group CCCCOCCCC DURPTKYDGMDSBL-UHFFFAOYSA-N 0.000 description 1
ORVWYBKYAWPQHJ-KFSCDZFWSA-N C\C=C\C.CCCC.C=CC=C.C=CCC.C=C(C)C.CC(C)C Chemical compound C\C=C\C.CCCC.C=CC=C.C=CCC.C=C(C)C.CC(C)C ORVWYBKYAWPQHJ-KFSCDZFWSA-N 0.000 description 1
239000004698 Polyethylene Substances 0.000 description 1
IYABWNGZIDDRAK-UHFFFAOYSA-N allene Chemical compound C=C=C IYABWNGZIDDRAK-UHFFFAOYSA-N 0.000 description 1
WFYPICNXBKQZGB-UHFFFAOYSA-N butenyne Chemical group C=CC#C WFYPICNXBKQZGB-UHFFFAOYSA-N 0.000 description 1
239000003054 catalyst Substances 0.000 description 1
230000003197 catalytic effect Effects 0.000 description 1
229920001429 chelating resin Polymers 0.000 description 1
238000005336 cracking Methods 0.000 description 1
XNMQEEKYCVKGBD-UHFFFAOYSA-N dimethylacetylene Natural products CC#CC XNMQEEKYCVKGBD-UHFFFAOYSA-N 0.000 description 1
238000001704 evaporation Methods 0.000 description 1
230000008020 evaporation Effects 0.000 description 1
238000000605 extraction Methods 0.000 description 1
239000002638 heterogeneous catalyst Substances 0.000 description 1
229920001903 high density polyethylene Polymers 0.000 description 1
239000004700 high-density polyethylene Substances 0.000 description 1
238000006317 isomerization reaction Methods 0.000 description 1
229920000092 linear low density polyethylene Polymers 0.000 description 1
239000004707 linear low-density polyethylene Substances 0.000 description 1
239000011159 matrix material Substances 0.000 description 1
229920000573 polyethylene Polymers 0.000 description 1
238000002360 preparation method Methods 0.000 description 1
MWWATHDPGQKSAR-UHFFFAOYSA-N propyne Chemical group CC#C MWWATHDPGQKSAR-UHFFFAOYSA-N 0.000 description 1
238000011084 recovery Methods 0.000 description 1
238000007670 refining Methods 0.000 description 1
238000000926 separation method Methods 0.000 description 1
125000000542 sulfonic acid group Chemical group 0.000 description 1

Classifications

- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C11/00—Aliphatic unsaturated hydrocarbons
- C07C11/02—Alkenes
- C07C11/08—Alkenes with four carbon atoms
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C7/00—Purification; Separation; Use of additives
- C07C7/005—Processes comprising at least two steps in series
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C7/00—Purification; Separation; Use of additives
- C07C7/04—Purification; Separation; Use of additives by distillation
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S203/00—Distillation: processes, separatory
- Y10S203/08—Waste heat

Landscapes

Chemical & Material Sciences (AREA)
Organic Chemistry (AREA)
Engineering & Computer Science (AREA)
Analytical Chemistry (AREA)
Oil, Petroleum & Natural Gas (AREA)
Water Supply & Treatment (AREA)
Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Cosmetics (AREA)

DD84265726A 1983-07-28 1984-07-27 Verfahren zur gewinnung von hochreinem 1-buten DD222301A5 (de)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
IT22293/83A IT1194350B (it)	1983-07-28	1983-07-28	Procedimento per la produzione di butene-1 ad elevata purezza con basso consumo di energia

Publications (1)

Publication Number	Publication Date
DD222301A5 true DD222301A5 (de)	1985-05-15

Family

ID=11194279

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
DD84265726A DD222301A5 (de)	1983-07-28	1984-07-27	Verfahren zur gewinnung von hochreinem 1-buten

Country Status (27)

Country	Link
US (1)	US4718986A (fr)
JP (1)	JPS6051130A (fr)
KR (1)	KR870000582B1 (fr)
AU (1)	AU3003984A (fr)
BE (1)	BE900249A (fr)
BR (1)	BR8403666A (fr)
CA (1)	CA1232617A (fr)
DD (1)	DD222301A5 (fr)
DE (1)	DE3426359A1 (fr)
DK (1)	DK369684A (fr)
ES (1)	ES534968A0 (fr)
FR (1)	FR2549824B1 (fr)
GB (1)	GB2144145B (fr)
GR (1)	GR82651B (fr)
HU (1)	HUT36763A (fr)
IT (1)	IT1194350B (fr)
LU (1)	LU85467A1 (fr)
NL (1)	NL8402385A (fr)
NO (1)	NO843021L (fr)
PH (1)	PH20654A (fr)
PL (1)	PL248947A1 (fr)
PT (1)	PT78989B (fr)
RO (1)	RO90564A (fr)
SE (1)	SE8403427L (fr)
TR (1)	TR22072A (fr)
YU (1)	YU132084A (fr)
ZA (1)	ZA845089B (fr)

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FR2673178B1 (fr) *	1991-02-26	1994-02-11	Institut Francais Petrole	Procede de separation de butanes et de butenes par distillation extractive.
EP0667329A1 (fr) *	1994-02-11	1995-08-16	ENICHEM S.p.A.	Procédé intégré pour la production simultanée d'alkyltertiobutylethers et de butene-1
IT1270675B (it)	1994-10-19	1997-05-07	Enichem Spa	Procedimento per la separazione di paraffine in miscela con olefine
IT1276802B1 (it) *	1995-06-30	1997-11-03	Enichem Spa	Procedimento integrato per la produzione di butene-1
DE10350045A1 (de) *	2003-10-27	2005-05-25	Basf Ag	Verfahren zur Herstellung von 1-Buten
DE10350044A1 (de) *	2003-10-27	2005-05-25	Basf Ag	Verfahren zur Herstellung von 1-Buten
DE10361823A1 (de)	2003-12-30	2005-08-11	Basf Ag	Verfahren zur Herstellung von Butadien und 1-Buten
DE10361822A1 (de) *	2003-12-30	2005-08-11	Basf Ag	Verfahren zur Herstellung von Butadien
DE10361824A1 (de) *	2003-12-30	2005-07-28	Basf Ag	Verfahren zur Herstellung von Butadien
DE102004054766A1 (de) *	2004-11-12	2006-05-18	Basf Ag	Verfahren zur Herstellung von Butadien aus n-Butan
DE102004055826A1 (de) *	2004-11-19	2006-05-24	Basf Ag	Verfahren und Vorrichtung zur Vollhydrierung eines Kohlenwasserstoffstromes
DE102004059356A1 (de) *	2004-12-09	2006-06-14	Basf Ag	Verfahren zur Herstellung von Butadien aus n-Butan
US20070137097A1 (en) *	2005-12-16	2007-06-21	Michio Ikura	Production of biodiesel from triglycerides via a thermal route
US7638573B2 (en) *	2006-04-07	2009-12-29	Exxonmobil Chemical Patents Inc.	Butyl nanocomposite via low Mw elastomer pre-blend
KR100822847B1 (ko)	2007-03-29	2008-04-16	한국에너지기술연구원	올레핀/파라핀 혼합가스에서 올레핀 분리 기술
KR100836707B1 (ko) *	2007-04-25	2008-06-10	한국에너지기술연구원	올레핀/파라핀 혼합가스에서 고순도 부텐-1 분리 기술
US20080302650A1 (en) *	2007-06-08	2008-12-11	Brandon Bello	Process to recover low grade heat from a fractionation system
JP5442714B2 (ja) *	2008-04-04	2014-03-12	ラムステクノロジーインク	オレフィンを製造するためのバッチプロセスおよびシステム
US7982086B2 (en) *	2009-02-03	2011-07-19	Catalytic Distillation Technologies	Deisobutenizer
EA027334B1 (ru)	2009-10-28	2017-07-31	Оасис Уотер, Инк.	Способы прямого осмотического разделения
US9044711B2 (en) *	2009-10-28	2015-06-02	Oasys Water, Inc.	Osmotically driven membrane processes and systems and methods for draw solute recovery
JP5863734B2 (ja) *	2013-09-18	2016-02-17	ラムステクノロジーインク	直鎖アルファオレフィンを製造するためのシステムおよびプロセス
JP6140591B2 (ja)	2013-11-21	2017-05-31	東洋エンジニアリング株式会社	蒸留装置
JP6289112B2 (ja)	2014-01-17	2018-03-07	東洋エンジニアリング株式会社	蒸留塔
CN104926587B (zh) *	2014-03-21	2017-06-16	青岛科技大学	一种1‑丁烯分离纯化的节能工艺流程
JP2014159464A (ja) *	2014-05-07	2014-09-04	Lummus Technology Inc	直鎖アルファオレフィンを製造するためのシステムおよびプロセス
CN104926588B (zh) *	2015-06-24	2016-08-24	长岭炼化岳阳工程设计有限公司	分离碳四烯烃中2-丁烯的方法及分离碳四烯烃中2-丁烯的系统
GB201604608D0 (en) *	2016-03-18	2016-05-04	Johnson Matthey Davy Technologies Ltd	Process
US11267770B2 (en)	2016-12-21	2022-03-08	Sabic Global Technologies B.V.	Process to produce olefins from a catalytically cracked hydrocarbons stream
JP6986574B2 (ja) *	2017-06-08	2021-12-22	エルジー・ケム・リミテッド	蒸留装置および蒸留方法
WO2020041696A1 (fr) *	2018-08-23	2020-02-27	Lummus Technology Llc	Procédé de production d'isobutylène de haute pureté
KR102605241B1 (ko)	2018-12-20	2023-11-22	주식회사 엘지화학	라피네이트-2의 정제방법 및 정제장치
KR102536741B1 (ko)	2018-12-20	2023-05-24	주식회사 엘지화학	라피네이트-2의 정제방법 및 정제장치
TWI757903B (zh) *	2019-10-07	2022-03-11	美商魯瑪斯科技有限責任公司	源自混合C4s之高純度異丁烷及丁烯-1之共同生產
KR102919009B1 (ko) *	2021-10-08	2026-01-27	주식회사 엘지화학	열통합 분리 시스템

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US2509136A (en) *	1949-06-17	1950-05-23	Gulf Oil Corp	Process and apparatus for concentrating dilute solutions
US2619814A (en) *	1950-04-22	1952-12-02	Lummus Co	Fractional distillation
DE1110668B (de) *	1960-07-30	1961-07-13	Linde Eismasch Ag	Verfahren und Einrichtung zum Trennen von Dreistoffgemischen, bei denen zwei Komponenten eine azeotrop siedende Mischung bilden, durch Tieftemperaturrektifikation
US3568457A (en) *	1969-03-05	1971-03-09	Universal Oil Prod Co	Separation of propane and propylene by distillation
FR2310327A1 (fr) *	1975-05-09	1976-12-03	Raffinage Cie Francaise	Procede d'obtention d'isobutylene de grande purete
DE2724365C3 (de) *	1977-05-28	1979-09-06	Basf Ag, 6700 Ludwigshafen	Verfahren zum Trennen eines C4 -Kohlenwasserstoffgemisches durch extraktive Destillation
GB1573553A (en) *	1977-05-30	1980-08-28	Stevens C	Apparatus for purifying a liquid
US4137129A (en) *	1977-10-07	1979-01-30	Uop Inc.	Fractionation process
JPS5575780A (en) *	1978-12-01	1980-06-07	Hisaka Works Ltd	Heat pump type water making equipment
EP0016284B1 (fr) *	1979-03-21	1983-06-22	DAVY McKEE (LONDON) LIMITED	Procédé pour la production d'un courant riche en butène-1, exempt de soufre
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US4277268A (en) *	1979-10-17	1981-07-07	Conoco, Inc.	Heat pump fractionation process
US4336407A (en) *	1980-02-25	1982-06-22	Chemical Research & Licensing Company	Catalytic distillation process
US4360405A (en) *	1980-05-12	1982-11-23	The Lummus Company	Process for fractionating close boiling components of a multi-component system
FR2495605A1 (fr) *	1980-12-05	1982-06-11	Inst Francais Du Petrole	Procede d'obtention du butene-1 de haute purete a partir d'une coupe c4 olefinique
US4395310A (en) *	1981-07-14	1983-07-26	Exxon Research And Engineering Co.	Fractionation system
JPS5892625A (ja) *	1981-11-27	1983-06-02	Nippon Zeon Co Ltd	Ｃ↓４炭化水素留分より高純度ブテン−１又はブテン−１／イソブテン混合物の分離方法
DE3318858A1 (de) *	1983-05-25	1984-11-29	Basf Ag, 6700 Ludwigshafen	Verfahren zur trennung eines im wesentlichen n-butene und butane enthaltenden c(pfeil abwaerts)4(pfeil abwaerts)-kohlenwasserstoffgemisches

1983
- 1983-07-28 IT IT22293/83A patent/IT1194350B/it active
1984
- 1984-06-27 SE SE8403427A patent/SE8403427L/xx not_active Application Discontinuation
- 1984-06-29 AU AU30039/84A patent/AU3003984A/en not_active Abandoned
- 1984-07-03 ZA ZA845089A patent/ZA845089B/xx unknown
- 1984-07-04 GR GR75185A patent/GR82651B/el unknown
- 1984-07-06 GB GB08417308A patent/GB2144145B/en not_active Expired
- 1984-07-10 KR KR1019840004010A patent/KR870000582B1/ko not_active Expired
- 1984-07-16 LU LU85467A patent/LU85467A1/fr unknown
- 1984-07-17 DE DE19843426359 patent/DE3426359A1/de not_active Ceased
- 1984-07-19 BR BR8403666A patent/BR8403666A/pt unknown
- 1984-07-24 CA CA000459575A patent/CA1232617A/fr not_active Expired
- 1984-07-25 PH PH31031A patent/PH20654A/en unknown
- 1984-07-25 NO NO843021A patent/NO843021L/no unknown
- 1984-07-26 FR FR8411912A patent/FR2549824B1/fr not_active Expired
- 1984-07-26 YU YU01320/84A patent/YU132084A/xx unknown
- 1984-07-26 PL PL24894784A patent/PL248947A1/xx unknown
- 1984-07-27 PT PT78989A patent/PT78989B/pt unknown
- 1984-07-27 RO RO84115360A patent/RO90564A/fr unknown
- 1984-07-27 DK DK369684A patent/DK369684A/da not_active Application Discontinuation
- 1984-07-27 HU HU842899A patent/HUT36763A/hu unknown
- 1984-07-27 DD DD84265726A patent/DD222301A5/de unknown
- 1984-07-27 JP JP59155718A patent/JPS6051130A/ja active Pending
- 1984-07-27 ES ES534968A patent/ES534968A0/es active Granted
- 1984-07-27 BE BE0/213406A patent/BE900249A/fr not_active IP Right Cessation
- 1984-07-30 NL NL8402385A patent/NL8402385A/nl not_active Application Discontinuation
1985
- 1985-01-01 TR TR22072A patent/TR22072A/xx unknown
1986
- 1986-09-04 US US06/904,046 patent/US4718986A/en not_active Expired - Fee Related

Also Published As

Publication number	Publication date
YU132084A (en)	1987-12-31
KR850001142A (ko)	1985-03-16
US4718986A (en)	1988-01-12
SE8403427L (sv)	1985-01-29
AU3003984A (en)	1985-01-31
NL8402385A (nl)	1985-02-18
IT8322293A1 (it)	1985-01-28
FR2549824B1 (fr)	1986-12-19
ES8505826A1 (es)	1985-06-16
IT8322293A0 (it)	1983-07-28
SE8403427D0 (sv)	1984-06-27
GB2144145B (en)	1987-02-18
IT1194350B (it)	1988-09-14
PT78989A (en)	1984-08-01
KR870000582B1 (ko)	1987-03-23
DK369684D0 (da)	1984-07-27
CA1232617A (fr)	1988-02-09
DE3426359A1 (de)	1985-02-14
LU85467A1 (fr)	1985-04-17
BR8403666A (pt)	1985-07-02
PT78989B (en)	1986-10-23
ES534968A0 (es)	1985-06-16
JPS6051130A (ja)	1985-03-22
GR82651B (fr)	1985-02-07
ZA845089B (en)	1985-02-27
HUT36763A (en)	1985-10-28
DK369684A (da)	1985-01-29
NO843021L (no)	1985-01-29
PL248947A1 (en)	1985-04-24
BE900249A (fr)	1985-01-28
GB8417308D0 (en)	1984-08-08
GB2144145A (en)	1985-02-27
TR22072A (tr)	1986-03-11
RO90564A (fr)	1986-12-10
FR2549824A1 (fr)	1985-02-01
PH20654A (en)	1987-03-16

Publication	Publication Date	Title
DE3426359A1 (de)	1985-02-14	Verfahren zur gewinnung von hochreinem 1-buten
EP0334154B1 (fr)	1993-05-12	Procédé pour l'estérification continueuse d'acides gras
EP2118044B1 (fr)	2013-05-15	Procédé de préparation de 1,4-butanediol très pur
EP1519906B1 (fr)	2009-02-25	Procede pour la production de methyl-tert-butylether de grande purete
DD222000A5 (de)	1985-05-08	Verfahren zur wiedergewinnung von buten-1 der polymerisationsstufe
DD282909A5 (de)	1990-09-26	Verfahren zur gewinnung von reinem dimethylether (dme)
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