Title:
TUBE BUNDLE REACTOR FOR PRODUCING MALEIC ACID ANHYDRIDE
Document Type and Number:
WIPO Patent Application WO/2011/057911
Kind Code:
A3
Abstract:
The invention relates to a system for producing maleic acid anhydride by means of heterogeneously catalyzed gas phase oxidation of an inlet flow, comprising hydrocarbons having at least (4) carbon atoms per molecule, comprising a reactor having a bundle of reaction tubes into which a solid catalyst is introduced, on which the exothermal reaction of the inlet flow with a gas flow containing oxygen takes place, and one or more pumps and one or more heat exchangers located outside of the reactor, by means of which a heat carrier made of a salt melt is carried, permeating the intermediate reaction space between the reaction tubes and absorbing reaction heat, the temperature of the salt melt being in the range of 350 to 480 °C, characterized in that the reaction tubes are made of an alloyed, heat-resistant steel comprising either at least 0.5 wt % chromium, or at least 0.25 wt % molybdenum, or at least 0.5 wt % chromium and at least 0.25 wt % molybdenum.
Inventors:
OLBERT GERHARD (DE)
BASSLER HANS-JUERGEN (DE)
STEINIGER MICHAEL (DE)
BASSLER HANS-JUERGEN (DE)
STEINIGER MICHAEL (DE)
Application Number:
PCT/EP2010/066597
Publication Date:
July 14, 2011
Filing Date:
November 02, 2010
Export Citation:
Assignee:
BASF SE (DE)
OLBERT GERHARD (DE)
BASSLER HANS-JUERGEN (DE)
STEINIGER MICHAEL (DE)
OLBERT GERHARD (DE)
BASSLER HANS-JUERGEN (DE)
STEINIGER MICHAEL (DE)
International Classes:
B01J8/06; C07C51/215; C07C57/145
Domestic Patent References:
| WO2008000740A1 | 2008-01-03 |
Foreign References:
| DE102007025869A1 | 2008-07-03 | |||
| DE10011309A1 | 2001-09-13 | |||
| US5095125A | 1992-03-10 | |||
| US20060004226A1 | 2006-01-05 | |||
| DE102007035046A1 | 2009-01-22 |
Other References:
SALZGITTER FLACHSTAHL: "Heat-resistant pressure-vessel steels (Technical Datasheet)", XP002636714, Retrieved from the Internet [retrieved on 20110512]
QUICK METALL: "Wekstoffdatenblatt 1.4541", XP002636715, Retrieved from the Internet [retrieved on 20110512]
QUICK METALL: "Wekstoffdatenblatt 1.4571", XP002636716, Retrieved from the Internet [retrieved on 20110512]
See also references of EP 2498904A2
QUICK METALL: "Wekstoffdatenblatt 1.4541", XP002636715, Retrieved from the Internet
QUICK METALL: "Wekstoffdatenblatt 1.4571", XP002636716, Retrieved from the Internet
See also references of EP 2498904A2
Attorney, Agent or Firm:
Kern, Hedwig (PatentanwälteFriedrichsplatz 9, Mannheim, DE)
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