DE446525C - Production of solid sodium bisulfite or sodium sulfite - Google Patents

Production of solid sodium bisulfite or sodium sulfite

Info

Publication number
DE446525C
DE446525C DEC36523D DEC0036523D DE446525C DE 446525 C DE446525 C DE 446525C DE C36523 D DEC36523 D DE C36523D DE C0036523 D DEC0036523 D DE C0036523D DE 446525 C DE446525 C DE 446525C
Authority
DE
Germany
Prior art keywords
sodium
bisulfite
production
solid
sulfite
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
DEC36523D
Other languages
German (de)
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.)
CHEM FAB KALK GmbH
Original Assignee
CHEM FAB KALK GmbH
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 CHEM FAB KALK GmbH filed Critical CHEM FAB KALK GmbH
Priority to DEC36523D priority Critical patent/DE446525C/en
Application granted granted Critical
Publication of DE446525C publication Critical patent/DE446525C/en
Expired legal-status Critical Current

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
    • C01D5/14—Preparation of sulfites

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Treating Waste Gases (AREA)

Description

Herstellung von festem Natriumbisulfit oder Natriumsulfit. Das Verfahren des Hauptpatents besteht darin, daß man reines Natriumbicarbonat in \Tatriumbisulfitlauge einträgt, mittels schwefliger Säure in Natriumbisulfit umwandelt und die entweichende Kohlensäure zur Gewinnung neuer Mengen von reinem Natriumbicarbonat durch Ausfällung aus technischer Sodalösung benutzt.Production of solid sodium bisulfite or sodium sulfite. The procedure of the main patent is that pure sodium bicarbonate in \ Tatriumbisulfitlauge enters, converted into sodium bisulfite by means of sulphurous acid and the escaping Carbonic acid to obtain new amounts of pure sodium bicarbonate through precipitation used from technical soda solution.

Wendet man zu diesem Verfahren Röstgase oder durch Verbrennen von Schwefel erzeugte verdünnte schweflige Säure an, so wird die bei der Umsetzung mit dem Bicarbonat entstehende Kohlensäure natürlich mit den Verdünnungsgasen der schwefligen Säure ebenfalls verdünnt, wodurch die Absorption der Kohlensäure zur Fällung des Bicarbonats erschwert wird.If you use roasting gases or by burning of this process Dilute sulphurous acid produced by sulfur, so is the reaction with The carbonic acid produced by the bicarbonate, of course, with the diluent gases of the sulphurous ones Acid also dilutes, causing the absorption of carbonic acid to precipitate the Bicarbonate is made more difficult.

Es wurde nun gefunden, daß man das Verfahren des Hauptpatents auch so leiten kann, claß ganz hochprozentige Kohlensäure entsteht, wodurch die Fällung des Bicarbonats sehr erleichtert wird. Man verfährt so, daß man die Natriumbisulfitlauge zunächst nur mit festem Natriumbicarbonat neutralisiert, wobei die Kohlensäure natürlich in hoher Konzentration entsteht und zur Fällung von Natriumbicarbonat deshalb sehr geeignet ist. Die ganz oder teilweise neutralisierte Sulfitlösung, in der je nach der Ausgangskonzentration der Bisulfitlauge festes Sulfit suspendiert ist, wird mittels schwefliger Säure wieder in Natriumbisulfit umgewandelt und die dem zugeführten Natriumbicarbonat entsprechende Bisulfitmenge fest oder als Lauge gewonnen. Natürlich kann man aber nach dem Verfahren auch neutrales Natriumsülfit in fester oder flüssiger Form gewinnen.It has now been found that the process of the main patent can also be used this can lead to the formation of a very high percentage of carbon dioxide, which causes the precipitation of the bicarbonate is greatly facilitated. The procedure is that the sodium bisulfite liquor initially only neutralized with solid sodium bicarbonate, the carbonic acid being natural arises in high concentration and therefore very much for the precipitation of sodium bicarbonate suitable is. The completely or partially neutralized sulphite solution, in which depending on solid sulfite is suspended in the initial concentration of bisulfite liquor converted back into sodium bisulfite by means of sulphurous acid and the added Sodium bicarbonate obtained as a solid or as a lye corresponding to the amount of bisulfite. Naturally but you can also use neutral sodium sulphate in solid or liquid form according to the method Gain shape.

Claims (1)

PATI:NTANSPRUCI3: Verfahren zur Herstellung von Natriumbisulfit oder Natriumsulfit aus Natriumbicarbonat und schwefliger Säure gemäß Patent 4,40 38o, dadurch gekennzeichnet, daß man Natriumbisulfitlauge mittels Natriumbicarbonat ganz oder teilweise neutralisiert und die dabei entstehende hochkonzentrierte Kohlensäure zur Fällung von reinem Natriumbicarbonat benutzt, worauf die Natriumsulfitlauge bzw. Natriumsulfitsuspension mittels schwefliger Säure wieder in Natriumbisulfitlauge übergeführt wird.PATI: NTANSPRUCI3: Process for the production of sodium bisulfite or Sodium sulfite from sodium bicarbonate and sulphurous acid according to Patent 4.40 38o, characterized in that sodium bisulfite liquor by means of sodium bicarbonate whole or partially neutralized and the resulting highly concentrated carbonic acid used for the precipitation of pure sodium bicarbonate, whereupon the sodium sulfite liquor or sodium sulphite suspension using sulphurous acid again in sodium bisulphite liquor is convicted.
DEC36523D 1925-04-05 1925-04-05 Production of solid sodium bisulfite or sodium sulfite Expired DE446525C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEC36523D DE446525C (en) 1925-04-05 1925-04-05 Production of solid sodium bisulfite or sodium sulfite

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEC36523D DE446525C (en) 1925-04-05 1925-04-05 Production of solid sodium bisulfite or sodium sulfite

Publications (1)

Publication Number Publication Date
DE446525C true DE446525C (en) 1927-07-05

Family

ID=7022318

Family Applications (1)

Application Number Title Priority Date Filing Date
DEC36523D Expired DE446525C (en) 1925-04-05 1925-04-05 Production of solid sodium bisulfite or sodium sulfite

Country Status (1)

Country Link
DE (1) DE446525C (en)

Similar Documents

Publication Publication Date Title
DE446525C (en) Production of solid sodium bisulfite or sodium sulfite
DE502908C (en) Process for the production of gases rich in hydrogen sulfide from aqueous solutions of alkali carbonate, bicarbonate and sulfhydrate
DE388343C (en) Process for the production of pulp
DE358700C (en) Process for the production of colloidal sulfur
DE388706C (en) Process for the production of liquid sulphurous acid
DE440380C (en) Production of solid sodium bisulfite
DE539317C (en) Process for the desulphurisation of gases containing hydrogen sulphide
DE578033C (en) Production of sulfur dioxide from gases
DE492976C (en) Process for the production of stable and storable, hydrogen sulfide-evolving preparations
DE325756C (en) Process for the recovery of sulphite pulp waste liquors
DE337183C (en) Process for utilizing the bisulfate residue from nitric acid production
DE439844C (en) Process for the production of cellulose xanthate
AT101305B (en) Process for the production of high quality rayon and similar structures from raw viscose.
DE558494C (en) Process for removing ammonia and hydrogen sulfide from gases
DE409010C (en) Process for the extraction of caustic potash and copper sulfate from potassium sulfate and copper oxide
DE749178C (en) Process for the recovery of sulfur from the exhaust gases containing hydrogen sulphide resulting from the manufacture of artificial structures by the viscose process
DE528521C (en) Process for the production of rayon from viscose solutions
DE453686C (en) Production of ammonium sulphate
DE507523C (en) Production of sodium sulfite or bisulfite solutions from alkaline waste liquors
DE716832C (en) Process for the production of alkali thiosulfate
DE587797C (en) Process for the desulphurization of gases
DE398040C (en) Process for cleaning ligno- or pectocellulose treated with chlorine with alkali solutions
DE588610C (en) Process for removing hydrogen sulfide from gases containing ammonia
DE582552C (en) Process for the production of a double salt which can be used for fertilization purposes
DE596159C (en) Process for the preparation of a highly concentrated fixing agent for photographic use