NO931369L - PROCEDURE FOR CONCENTRATION AND PURIFICATION OF SULFURIC ACID - Google Patents

PROCEDURE FOR CONCENTRATION AND PURIFICATION OF SULFURIC ACID

Info

Publication number
NO931369L
NO931369L NO93931369A NO931369A NO931369L NO 931369 L NO931369 L NO 931369L NO 93931369 A NO93931369 A NO 93931369A NO 931369 A NO931369 A NO 931369A NO 931369 L NO931369 L NO 931369L
Authority
NO
Norway
Prior art keywords
purification
procedure
concentration
sulfuric acid
sulphuric acid
Prior art date
Application number
NO93931369A
Other languages
Norwegian (no)
Other versions
NO931369D0 (en
Inventor
Elmar-Manfred Horn
Guenter Lailach
Stylianos Savakis
Original Assignee
Bayer Ag
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.)
Filing date
Publication date
Application filed by Bayer Ag filed Critical Bayer Ag
Publication of NO931369D0 publication Critical patent/NO931369D0/en
Publication of NO931369L publication Critical patent/NO931369L/en

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B17/00—Sulfur; Compounds thereof
    • C01B17/69—Sulfur trioxide; Sulfuric acid
    • C01B17/74—Preparation
    • C01B17/76—Preparation by contact processes
    • C01B17/80—Apparatus
    • C01B17/806—Absorbers; Heat exchangers
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B17/00—Sulfur; Compounds thereof
    • C01B17/69—Sulfur trioxide; Sulfuric acid
    • C01B17/88—Concentration of sulfuric acid
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Metallurgy (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Engineering & Computer Science (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
  • Cleaning Or Drying Semiconductors (AREA)
  • Removal Of Specific Substances (AREA)
  • Treatment Of Sludge (AREA)
  • Silicon Compounds (AREA)

Abstract

The invention relates to a process for concentrating and/or purifying sulphuric acid to concentrations of from 80 to 97% H2SO4, in which process temperatures in the range of from 90 to 350 DEG C can be employed, and installation parts which come into contact with the sulphuric acid consist of special alloys.
NO93931369A 1992-04-23 1993-04-14 PROCEDURE FOR CONCENTRATION AND PURIFICATION OF SULFURIC ACID NO931369L (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE4213324A DE4213324A1 (en) 1992-04-23 1992-04-23 Process for concentrating and purifying sulfuric acid

Publications (2)

Publication Number Publication Date
NO931369D0 NO931369D0 (en) 1993-04-14
NO931369L true NO931369L (en) 1993-10-25

Family

ID=6457298

Family Applications (1)

Application Number Title Priority Date Filing Date
NO93931369A NO931369L (en) 1992-04-23 1993-04-14 PROCEDURE FOR CONCENTRATION AND PURIFICATION OF SULFURIC ACID

Country Status (6)

Country Link
EP (1) EP0566949B1 (en)
JP (1) JPH0680408A (en)
AT (1) ATE125778T1 (en)
CA (1) CA2094453A1 (en)
DE (2) DE4213324A1 (en)
NO (1) NO931369L (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19719394C1 (en) * 1997-05-07 1999-01-07 Bayer Ag Process for concentrating or purifying sulfuric acid
DE19807632A1 (en) * 1998-02-23 1999-09-02 Bayer Ag Device for concentrating and purifying sulfuric acid
US6405214B1 (en) * 1998-12-17 2002-06-11 Hewlett-Packard Company Method of gathering usage information and transmitting to a primary server and a third party server by a client program
DE10231314B4 (en) * 2002-07-10 2008-07-31 Plinke Gmbh Process for the use of stainless steel condensers in systems for stripping nitriding waste acids

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR854510A (en) * 1938-05-10 1940-04-17 Hercules Powder Co Ltd Apparatus for concentration of acids
DE2360706C3 (en) * 1973-12-06 1980-10-16 Hoechst Ag, 6000 Frankfurt Process for the regeneration of sulfuric acid
DE2845917C2 (en) * 1978-10-21 1983-10-27 Hoechst Ag, 6230 Frankfurt Use of gray cast iron alloys for the manufacture of boilers for boiling concentrated sulfuric acid
EP0022181B1 (en) * 1979-06-13 1983-10-12 Bayer Ag Process and apparatus for regenerating sulfuric acid

Also Published As

Publication number Publication date
CA2094453A1 (en) 1993-10-24
EP0566949A1 (en) 1993-10-27
EP0566949B1 (en) 1995-08-02
NO931369D0 (en) 1993-04-14
DE4213324A1 (en) 1993-10-28
DE59300422D1 (en) 1995-09-07
ATE125778T1 (en) 1995-08-15
JPH0680408A (en) 1994-03-22

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Legal Events

Date Code Title Description
FC2A Withdrawal, rejection or dismissal of laid open patent application