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1. CN101056833 - Method for producing butadiene from n-butane

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Amt China
Aktenzeichen/Anmeldenummer 200580038843.X
Anmeldedatum 11.11.2005
Veröffentlichungsnummer 101056833
Veröffentlichungsdatum 17.10.2007
Erteilungsnummer 101056833
Erteilungsdatum 23.06.2010
Veröffentlichungsart B
IPC
C07C 5/333
CChemie; Hüttenwesen
07Organische Chemie
CAcyclische oder carbocyclische Verbindungen
5Herstellung von Kohlenwasserstoffen aus Kohlenwasserstoffen, die die gleiche Anzahl von Kohlenstoffatomen im Molekül enthalten
32durch Dehydrierung unter Bildung von freiem Wasserstoff
327Bildung von ausschließlich nichtaromatischen Kohlenstoff-Kohlenstoff-Doppelbindungen
333Katalytische Verfahren
C07C 11/167
CChemie; Hüttenwesen
07Organische Chemie
CAcyclische oder carbocyclische Verbindungen
11Acyclische ungesättigte Kohlenwasserstoffe
12Alkadiene
16mit vier Kohlenstoffatomen
1671,3-Butadien
CPC
C07C 7/09
CCHEMISTRY; METALLURGY
07ORGANIC CHEMISTRY
CACYCLIC OR CARBOCYCLIC COMPOUNDS
7Purification; Separation; Use of additives
09by fractional condensation
C07C 5/333
CCHEMISTRY; METALLURGY
07ORGANIC CHEMISTRY
CACYCLIC OR CARBOCYCLIC COMPOUNDS
5Preparation of hydrocarbons from hydrocarbons containing the same number of carbon atoms
32by dehydrogenation with formation of free hydrogen
327Formation of non-aromatic carbon-to-carbon double bonds only
333Catalytic processes
C07C 5/48
CCHEMISTRY; METALLURGY
07ORGANIC CHEMISTRY
CACYCLIC OR CARBOCYCLIC COMPOUNDS
5Preparation of hydrocarbons from hydrocarbons containing the same number of carbon atoms
42by dehydrogenation with a hydrogen acceptor
48with oxygen as an acceptor
Anmelder BASF AG
巴斯福股份公司
Erfinder Crone Sven
S·克罗内
Klanner Catharina
C·克兰尔
Schindler Goetz-Peter
G-P·申德勒
Duda Mark
M·杜达
Borgmeier Frieder
F·博格迈尔
Vertreter liujin hui zhangxue zhen
北京市中咨律师事务所 11247
北京市中咨律师事务所 11247
Prioritätsdaten 102004054766.1 12.11.2004 DE
Titel
(EN) Method for producing butadiene from n-butane
(ZH) 由正丁烷制备丁二烯的方法
Zusammenfassung
(EN)
The invention relates to a method for producing butadiene from n-butane, said method comprising the following steps: A) a feed gas flow (a) containing n-butane is prepared; B) the feed gas flow (a) containing n-butane is fed into at least one first dehydrogenating region and the n-butane is subjected to non-oxidative catalytic dehydrogenation, in order to obtain a gas flow (b) containing n-butane, 1-butene, 2-butene, butadiene, hydrogen, optionally carbon dioxide, and optionally water vapour; C) the gas flow (b) and a gas having an oxygen content of at least 75 vol. % are fed into at least one second dehydrogenating region and the 1-butene and 2-butene are subjected to oxidative dehydrogenation, in order to obtain a gas flow (c) containing n-butane, butadiene, hydrogen, and water vapour; D) the gas flow (c) is compressed in at least one first compression step and cooled, in order to obtain at least one condensate flow (d1) containing water and a gas flow (d2) containing n-butane, butadiene, hydrogen, carbon dioxide, and water vapour; E) the gas flow (d2) is compressed in at least one other compression step and cooled, in order to obtain at least one condensate flow (e1) containing n-butane, butadiene and water and a gas flow (e2) containing n-butane, butadiene, hydrogen and carbon dioxide; F) the gas flow (e2) is cooled, in order to obtain a condensate flow (f1) containing n-butane and butadiene and an exhaust gas flow (f2) containing carbon dioxide and hydrogen; G) water is separated from the at least one condensate flow (e1) and optionally the condensate flow (f1) during phase separation, in order to obtain at least one C4-hydrocarbon flow (g1) containing n-butane and butadiene and at least one waste water flow (g2); H) the C4-hydrocarbon flow (g1) is fractionated into a return flow (h1) containing n-butane and a product flow (h2) essentially consisting of butadiene, and the flow (h1) is redirected into the first dehydrogenating region.

(ZH)

本发明涉及一种由正丁烷制备丁二烯的方法,包括一下步骤:A)提供包含正丁烷的进料气流a;B)将包含正丁烷的进料气流a送入至少一个第一脱氢区并使正丁烷非氧化性催化脱氢以得到包含正丁烷、1-丁烯、2-丁烯、丁二烯和氢气、任选二氧化碳以及任选蒸汽的气流b;C)将气流b和氧含量至少为75体积%的含氧气体送入至少一个第二个脱氢区并使1-丁烯和2-丁烯氧化脱氢以得到包含正丁烷、丁二烯、氢气、二氧化碳和蒸汽的气流c;D)使气流c在至少一个第一个压缩阶段中压缩并冷却以得到至少一种包含水的冷凝料流d1和包含正丁烷、丁二烯、氢气、二氧化碳和蒸汽的气流d2;E)使气流d2在至少一个另外的压缩阶段中压缩并冷却以得到至少一种包含正丁烷、丁二烯和水的冷凝料流e1和包含正丁烷、丁二烯、氢气和二氧化碳的气流e2;F)使气流e2冷却以得到包含正丁烷和丁二烯的冷凝料流f1和包含二氧化碳和氢气的废气流f2;G)将水从至少一种冷凝料流e1以及如果合适的话从冷凝料流f1中通过相分离除去以得到至少一种包含正丁烷和丁二烯的C4烃料流g1和至少一种废水流g2;H)将C4烃料流g1分离成包含正丁烷的再循环料流h1和基本上由丁二烯组成的产物流h2,并且使料流h1再循环进入第一脱氢区。

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