IT949639B - Processo per recuperare sostanze utili da soluzioni di rifiuto - Google Patents

Processo per recuperare sostanze utili da soluzioni di rifiuto

Info

Publication number
IT949639B
IT949639B IT47703/72A IT4770372A IT949639B IT 949639 B IT949639 B IT 949639B IT 47703/72 A IT47703/72 A IT 47703/72A IT 4770372 A IT4770372 A IT 4770372A IT 949639 B IT949639 B IT 949639B
Authority
IT
Italy
Prior art keywords
useful substances
waste solutions
recovering useful
recovering
waste
Prior art date
Application number
IT47703/72A
Other languages
English (en)
Original Assignee
Virginia Chemicals Inc
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 Virginia Chemicals Inc filed Critical Virginia Chemicals Inc
Application granted granted Critical
Publication of IT949639B publication Critical patent/IT949639B/it

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01D—COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM, RUBIDIUM, CAESIUM, OR FRANCIUM
    • C01D5/00—Sulfates or sulfites of sodium, potassium or alkali metals in general
    • C01D5/02—Preparation of sulfates from alkali metal salts and sulfuric acid or bisulfates; Preparation of bisulfates
    • 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
    • C01B17/02—Preparation of sulfur; Purification
    • C01B17/06—Preparation of sulfur; Purification from non-gaseous sulfides or materials containing such sulfides, e.g. ores
    • 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
    • C01B17/48—Sulfur dioxide; Sulfurous acid
    • 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
    • C01B17/64—Thiosulfates; Dithionites; Polythionates
    • C01B17/66—Dithionites or hydrosulfites (S2O42-)

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Physical Water Treatments (AREA)
  • Heat Treatment Of Water, Waste Water Or Sewage (AREA)
  • Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
IT47703/72A 1971-01-13 1972-01-13 Processo per recuperare sostanze utili da soluzioni di rifiuto IT949639B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US10617971A 1971-01-13 1971-01-13

Publications (1)

Publication Number Publication Date
IT949639B true IT949639B (it) 1973-06-11

Family

ID=22309946

Family Applications (1)

Application Number Title Priority Date Filing Date
IT47703/72A IT949639B (it) 1971-01-13 1972-01-13 Processo per recuperare sostanze utili da soluzioni di rifiuto

Country Status (9)

Country Link
US (1) US3718732A (it)
BE (1) BE777973A (it)
BR (1) BR7200195D0 (it)
CA (1) CA936979A (it)
DE (1) DE2201246B2 (it)
FR (1) FR2121817B1 (it)
GB (1) GB1360174A (it)
IT (1) IT949639B (it)
NL (1) NL151680B (it)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5238505B2 (it) * 1973-02-02 1977-09-29
JPS5341464B2 (it) * 1973-08-15 1978-11-02
US3961034A (en) * 1974-09-25 1976-06-01 Virginia Chemicals Inc. Method of removing sodium thiosulfate from a hydrosulfite reaction mixture
JPS51136596A (en) * 1975-05-21 1976-11-26 Mitsui Toatsu Chem Inc Method for processing mot her liquid in the production of sodium dithionite
JPS51136597A (en) * 1975-05-21 1976-11-26 Mitsui Toatsu Chem Inc Method for processing mother solution of sodium dithionite anhydride production
US4131642A (en) * 1976-09-17 1978-12-26 Ciba-Geigy Corporation Treatment of the waste from the production of tertiary butyl amine to recover sodium sulfate and methyl or sodium formate
JPS57209809A (en) * 1981-06-18 1982-12-23 Mitsubishi Gas Chem Co Inc Preparation of dithionite
DE3406322A1 (de) * 1984-02-22 1985-08-22 Basf Ag, 6700 Ludwigshafen Stabilisierte, wasser enthaltende, alkalisch eingestellte natriumdithionitzubereitungen
CA2016353A1 (en) * 1989-05-23 1990-11-23 Charles E. Winslow, Jr. Method for re-use of aqueous co-product from manufacture of sodium dithionite
US7759273B2 (en) * 2005-04-20 2010-07-20 Cabot Corporation Methods of forming an alkali metal salt
CN103754896B (zh) * 2013-12-21 2016-06-15 中盐安徽红四方股份有限公司 一种在保险粉废水中提取芒硝的方法
CN106706841B (zh) * 2016-12-13 2019-02-05 柳州化工股份有限公司 保险粉生产中回收甲酸钠纯度的分析方法

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE367731A (it) *
DE295859C (it) *
US1609773A (en) * 1924-12-23 1926-12-07 Squibb & Sons Inc Production of anhydrous hydrosulphites
US2359319A (en) * 1941-10-02 1944-10-03 Cons Mining & Smelting Co Process for the production of ammonium sulphate and elemental sulphur
FR1536247A (fr) * 1966-05-16 1968-08-16 Mitsubishi Edogawa Kagaku Kk Procédé de production d'un hydrosulfite anhydre de métal alcalin
DE1592013B2 (de) * 1966-05-16 1972-08-24 Mitsubishi Edogawa Kagaku K K , Tokio Verfahren zur herstellung eines wasserfreien natrium-hyposulfits

Also Published As

Publication number Publication date
NL151680B (nl) 1976-12-15
DE2201246B2 (de) 1979-08-30
US3718732A (en) 1973-02-27
BR7200195D0 (pt) 1973-06-14
BE777973A (fr) 1972-05-02
CA936979A (en) 1973-11-13
FR2121817A1 (it) 1972-08-25
GB1360174A (en) 1974-07-17
DE2201246A1 (de) 1972-08-03
NL7200490A (it) 1972-07-17
FR2121817B1 (it) 1975-06-13

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