NL7212296A - Removing hydrocarbons from spent sulphuric acid catalyst - which has been used for alkylation of olefins or aromatics - Google Patents

Removing hydrocarbons from spent sulphuric acid catalyst - which has been used for alkylation of olefins or aromatics

Info

Publication number
NL7212296A
NL7212296A NL7212296A NL7212296A NL7212296A NL 7212296 A NL7212296 A NL 7212296A NL 7212296 A NL7212296 A NL 7212296A NL 7212296 A NL7212296 A NL 7212296A NL 7212296 A NL7212296 A NL 7212296A
Authority
NL
Netherlands
Prior art keywords
acid
aromatics
alkylation
olefins
sulphate
Prior art date
Application number
NL7212296A
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 filed Critical
Priority to NL7212296A priority Critical patent/NL7212296A/en
Publication of NL7212296A publication Critical patent/NL7212296A/en

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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
    • C01B17/90—Separation; Purification
    • C01B17/901—Recovery from spent acids containing metallic ions, e.g. hydrolysis acids, pickling acids
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C2/00—Preparation of hydrocarbons from hydrocarbons containing a smaller number of carbon atoms
    • C07C2/54—Preparation of hydrocarbons from hydrocarbons containing a smaller number of carbon atoms by addition of unsaturated hydrocarbons to saturated hydrocarbons or to hydrocarbons containing a six-membered aromatic ring with no unsaturation outside the aromatic ring
    • C07C2/56—Addition to acyclic hydrocarbons
    • C07C2/58—Catalytic processes
    • C07C2/62—Catalytic processes with acids
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C2527/00—Catalysts comprising the elements or compounds of halogens, sulfur, selenium, tellurium, phosphorus or nitrogen; Catalysts comprising carbon compounds
    • C07C2527/02—Sulfur, selenium or tellurium; Compounds thereof
    • C07C2527/053—Sulfates or other compounds comprising the anion (SnO3n+1)2-
    • C07C2527/054—Sulfuric acid or other acids with the formula H2Sn03n+1

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

Recovering H2SO4 catalyst used for alkylation of olefins or aromatics, (a) contacting it with olefinic hydrocarbon to produce mostly dialkyl sulphate with some alkyl acid sulphate, acid-polymeric hydrocarbon complex and water (b) extracting the dialkyl sulphate from the product with a liq. hydrocarbon solvent (c) diluting the raffinate to 85-90% acidity, extracting the residual dialkyl sulphate with more solvent, (d) diluting the second raffinate to 50% H2SO4 to hydrolyse the acid sulphate to alcohol and release the polymeric hydrocarbon from the complex and finally removing the alcohol and polymeric hydrocarbon from the final acid which contains about 50% acid. The final acid may be concd. by distn.
NL7212296A 1972-09-11 1972-09-11 Removing hydrocarbons from spent sulphuric acid catalyst - which has been used for alkylation of olefins or aromatics NL7212296A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
NL7212296A NL7212296A (en) 1972-09-11 1972-09-11 Removing hydrocarbons from spent sulphuric acid catalyst - which has been used for alkylation of olefins or aromatics

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL7212296A NL7212296A (en) 1972-09-11 1972-09-11 Removing hydrocarbons from spent sulphuric acid catalyst - which has been used for alkylation of olefins or aromatics

Publications (1)

Publication Number Publication Date
NL7212296A true NL7212296A (en) 1974-03-13

Family

ID=19816903

Family Applications (1)

Application Number Title Priority Date Filing Date
NL7212296A NL7212296A (en) 1972-09-11 1972-09-11 Removing hydrocarbons from spent sulphuric acid catalyst - which has been used for alkylation of olefins or aromatics

Country Status (1)

Country Link
NL (1) NL7212296A (en)

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Legal Events

Date Code Title Description
BV The patent application has lapsed