GB470556A - Process for regenerating waste sulphuric acid - Google Patents

Process for regenerating waste sulphuric acid

Info

Publication number
GB470556A
GB470556A GB35502/36A GB3550236A GB470556A GB 470556 A GB470556 A GB 470556A GB 35502/36 A GB35502/36 A GB 35502/36A GB 3550236 A GB3550236 A GB 3550236A GB 470556 A GB470556 A GB 470556A
Authority
GB
United Kingdom
Prior art keywords
sulphuric acid
regenerating waste
waste sulphuric
acid
carbon sol
Prior art date
Legal status (The legal status 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 status listed.)
Expired
Application number
GB35502/36A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
CELLULOSE PATENTS International
Original Assignee
CELLULOSE PATENTS International
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 CELLULOSE PATENTS International filed Critical CELLULOSE PATENTS International
Publication of GB470556A publication Critical patent/GB470556A/en
Expired legal-status Critical Current

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
    • C01B17/90—Separation; Purification
    • C01B17/905—Removal of organic impurities
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F13/00—Recovery of starting material, waste material or solvents during the manufacture of artificial filaments or the like
    • D01F13/02—Recovery of starting material, waste material or solvents during the manufacture of artificial filaments or the like of cellulose, cellulose derivatives or proteins
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
    • Y02P70/62—Manufacturing or production processes characterised by the final manufactured product related technologies for production or treatment of textile or flexible materials or products thereof, including footwear

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)

Abstract

Waste and polluted sulphuric acid resulting from the parchment, artificial silk, and transparent paper industries is regenerated by heating or concentrating the acid and adding an oxidizing agent such as nitric acid, the addition being commenced at the moment when formation of a carbon sol sets in and continued gradually (in the manner of a titration) so that the carbon sol is oxidized as it is formed. Specifications 361,509, 387,569, and 441,452 are referred to.
GB35502/36A 1936-01-14 1936-12-28 Process for regenerating waste sulphuric acid Expired GB470556A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL470556X 1936-01-14

Publications (1)

Publication Number Publication Date
GB470556A true GB470556A (en) 1937-08-17

Family

ID=19786461

Family Applications (1)

Application Number Title Priority Date Filing Date
GB35502/36A Expired GB470556A (en) 1936-01-14 1936-12-28 Process for regenerating waste sulphuric acid

Country Status (2)

Country Link
GB (1) GB470556A (en)
NL (1) NL45663C (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3926112A1 (en) * 1989-08-08 1991-02-14 Hoechst Ag METHOD FOR REPROCESSING THE SULFURIC ACID FROM PHOSPHORUS CLEANING

Also Published As

Publication number Publication date
NL45663C (en) 1900-01-01

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