Tube bundle reactor for producing maleic acid anhydride

Tube bundle reactor for producing maleic acid anhydride

  • CN 102,639,224 A
  • Filed: 11/02/2010
  • Published: 08/15/2012
  • Est. Priority Date: 11/10/2009
  • Status: Active Application
First Claim
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1. one kind comprises the equipment that feed steam that per molecule has the hydro carbons of at least 4 carbon atoms prepares maleic anhydride through the heterogeneous catalysis gaseous oxidation;

  • Said equipment comprises;

    have the reactor of reaction tube tube bank, in said tube bank, introduce the solid catalyst that the exothermic reaction of feed steam is carried out in useful oxygen-containing gas materials flow above that;

    And one or more pumps and one or more heat exchanger;

    It flows through intermediate space between the reaction tube and the hot heat transfer medium that forms of absorption reaction in the said reactor in said reactor outside and by it through making molten salt bath;

    The temperature of wherein said molten salt bath is 350-480 °

    of C, and wherein said reaction tube is processed by the heat-resisting alloy steel that comprises 0.5 weight % chromium or 0.25 weight % molybdenum or 0.5 weight % chromium and 0.25 weight % molybdenum at least at least at least at least.

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