DE418389C - Process for the production of pure hydrochloric acid - Google Patents

Process for the production of pure hydrochloric acid

Info

Publication number
DE418389C
DE418389C DES68734D DES0068734D DE418389C DE 418389 C DE418389 C DE 418389C DE S68734 D DES68734 D DE S68734D DE S0068734 D DES0068734 D DE S0068734D DE 418389 C DE418389 C DE 418389C
Authority
DE
Germany
Prior art keywords
hydrochloric acid
production
pure hydrochloric
calcium chloride
pure
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
DES68734D
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.)
Salzwerk Heibronn A G
Original Assignee
Salzwerk Heibronn A G
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 Salzwerk Heibronn A G filed Critical Salzwerk Heibronn A G
Priority to DES68734D priority Critical patent/DE418389C/en
Application granted granted Critical
Publication of DE418389C publication Critical patent/DE418389C/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
    • C01B7/00—Halogens; Halogen acids
    • C01B7/01—Chlorine; Hydrogen chloride
    • C01B7/03—Preparation from chlorides

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Processing Of Solid Wastes (AREA)

Description

Verfahren zur Gewinnung reiner Salzsäure. Bei vielen chemischen Prozessen in der Großindustrie fallen Laugen an, deren Verarbeitung auf andere chemische Produkte zu kostspielig ist; andererseits bereitet aber ihre Beseitigung häufig große Schwierigkeiten, weil diese Abwässer die Flüsse in erheblichem Maße verunreinigen. Zu dieser Art von lästigen Betriebslaugen gehört beispielsweise die Chlorcal.ciumlauge.Process for obtaining pure hydrochloric acid. In many chemical processes In large-scale industry, alkalis are used, and other chemical products are used to process them is too expensive; on the other hand, however, their removal often causes great difficulties, because this sewage pollutes the rivers to a considerable extent. About this species One of the annoying industrial liquors is calcium chloride, for example.

Es hat sich nun gezeigt, daß geschmolzenes Chlorcalcium bei etwa 8oo° C, ganz ähnlich wie geschmolzenes Chlornatrium, die Fähigkeit hat, Sulfate der Erdalkalien, beispielsweise den sonst unlöslichen Schwerspat, in beträchtlichen Mengen zu einer vollkommen klaren Schmelze aufzulösen.It has now been shown that molten calcium chloride at about 800 ° C, very similar to molten sodium chloride, has the ability to convert sulphates of the alkaline earths, for example the otherwise insoluble heavy spar, in considerable quantities to one to dissolve completely clear melt.

Leitet man nun in diese klare Schmelze Wasserdampf ein, so findet eine ganz intensive Salzsäurebildung statt, während gleichzeitig eine Trübung der Schmelze durch Calciumoxyd zu beobachten ist. Schwerspat selbst bleibt unverändert, spielt aber offenbar die Rolle eines Katalysators, da eine Schmelze von Chlorcalcium allein mit Wasserdampf behandelt, nur in ganz geringer Menge Salzsäure .abgibt. Es wird also die gebundene Schwefelsäure des Schwerspats benutzt, um die Salzsäure frei zu machen, wobei Schwerspat unverändert aus dem Prozeß hervorgeht und für eine weitere Zersetzung von Chlorcalcium Verwendung finden kann. Die Umsetzung geht sehr rasch vor sich; die anfallende Salzsäure ist chemisch rein. Die bei dem Schmelzprozeß auftretende Abwärme dient zum Eindampfen der dünnen Chlorcalciumlösungen.If you now introduce water vapor into this clear melt, you will find a very intensive formation of hydrochloric acid takes place, while at the same time a clouding of the Melt through calcium oxide can be observed. Barite itself remains unchanged, but apparently plays the role of a catalyst, since a melt of calcium chloride Treated with steam alone, releases only a very small amount of hydrochloric acid. So the bound sulfuric acid of the barite is used to make the hydrochloric acid to make free, with barite emerging unchanged from the process and for one further decomposition of calcium chloride can be used. The implementation goes very well quickly ahead of you; the hydrochloric acid produced is chemically pure. The one in the melting process Any waste heat that occurs is used to evaporate the thin calcium chloride solutions.

Claims (1)

PATEN T-ANSPRUCH: Verfahren zur Gewinnung von reiner Salzsäure, dadurch gekennzeichnet, daß Erdalkalisulfate in geschmolzenem Erdalkalichlorid gelöst werden und die erhaltene Schmelze mit Wasserdampf behandelt wird.PATENT T-CLAIM: Process for the production of pure hydrochloric acid, thereby characterized in that alkaline earth sulfates are dissolved in molten alkaline earth chloride and the melt obtained is treated with steam.
DES68734D 1925-02-07 1925-02-07 Process for the production of pure hydrochloric acid Expired DE418389C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DES68734D DE418389C (en) 1925-02-07 1925-02-07 Process for the production of pure hydrochloric acid

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DES68734D DE418389C (en) 1925-02-07 1925-02-07 Process for the production of pure hydrochloric acid

Publications (1)

Publication Number Publication Date
DE418389C true DE418389C (en) 1925-09-04

Family

ID=7500495

Family Applications (1)

Application Number Title Priority Date Filing Date
DES68734D Expired DE418389C (en) 1925-02-07 1925-02-07 Process for the production of pure hydrochloric acid

Country Status (1)

Country Link
DE (1) DE418389C (en)

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