DE486829C - Process for drying roast gases to be electrically cleaned using sulfuric acid anhydride - Google Patents

Process for drying roast gases to be electrically cleaned using sulfuric acid anhydride

Info

Publication number
DE486829C
DE486829C DEM95327D DEM0095327D DE486829C DE 486829 C DE486829 C DE 486829C DE M95327 D DEM95327 D DE M95327D DE M0095327 D DEM0095327 D DE M0095327D DE 486829 C DE486829 C DE 486829C
Authority
DE
Germany
Prior art keywords
sulfuric acid
acid anhydride
drying
gases
electrically cleaned
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
DEM95327D
Other languages
German (de)
Inventor
Dipl-Ing Fritz Lechler
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.)
GEA Group AG
Original Assignee
Metallgesellschaft AG
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 Metallgesellschaft AG filed Critical Metallgesellschaft AG
Priority to DEM95327D priority Critical patent/DE486829C/en
Application granted granted Critical
Publication of DE486829C publication Critical patent/DE486829C/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
    • C01B17/48—Sulfur dioxide; Sulfurous acid
    • C01B17/50—Preparation of sulfur dioxide
    • C01B17/56—Separation; Purification

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Drying Of Gases (AREA)

Description

durch Schwefelsäureanhydrid Bei der mehrstufigen Feinreinigung von Röstgasen zur Abscheidung von Arsen, Selen und ähnlichen Kontaktgiften ist es bekannt, Schwefelsäureanhydrid in das Gas ausströmen zu lassen. Das S03 nimmt dabei Wasser auf, bildet HZS04 Nebel, die elektrisch niedergeschlagen werden, und dient auf diese Weise zur Trocknung des Gases.by sulfuric anhydride During the multi-stage fine cleaning of Roasting gases for separating arsenic, selenium and similar contact poisons are known to Let sulfuric anhydride flow out into the gas. The S03 takes water on, HZS04 forms nebulae that are electrically precipitated and serves on them Way to dry the gas.

Bei diesem bekannten Trocknungsverfahren wird das Schwefelsäureanhydrid dem Gas in allen Stufen der elektrischen Feinreinigung, also wiederholt, zugeführt. Im Gegensatz hierzu kommt es bei der Erfindung darauf an, daß das Schwefelsäureanhydrid nur in die im Wege des Gases letzte Stufe der elektrischen Entarsenierungsanlage eingeleitet wird. Es hat sich gezeigt, daß die Beschränkung auf die letzte Stufe oder Abteilung der elektrischen Entarsenierungsanlagefür den beabsichtigten Zweck völlig ausreicht. Da ferner in der letzten, lediglich als Reserve vorgesehenen Stufe der elektrischen Entarsenierungsanlage erfahrungsgemäß kaum noch oder zumeist kein Arsen oder Selen mehr anfällt, sondern bereits ein Teil der Produktion, z. B. in Form von Monohydrat bzw. Oleum, so ergibt sich bei der Erfindung neben der Trocknung des Gases der Vorteil, daß die nachgeschalteten Absorber eine wesentliche Entlastung erfahren.In this known drying process, the sulfuric anhydride is used the gas in all stages of the electrical fine cleaning, i.e. repeatedly fed. In contrast, it is important in the invention that the sulfuric anhydride only in the last stage of the electrical arsenic removal system by way of the gas is initiated. It has been shown that the restriction to the last stage or department of the electrical de-arsenic for the intended purpose completely sufficient. Since it is also in the last stage, which is only intended as a reserve experience has shown that hardly any or mostly none of the electrical arsenic removal system Arsenic or selenium arises more, but already a part of the production, z. Am In the form of monohydrate or oleum, the invention results in addition to drying the advantage of the gas that the downstream absorber is a significant relief Experienced.

Claims (1)

PATRNTANSPRUCH: Verfahren zum Trocknen von zwecks Abscheidung von Arsen o. dgl. mehrstufig' elektrisch gereinigten Röstgasen für Schwefelsäurekontaktanlagen durch Einführung von Schwefelsäureanhydrid, dadurch gekennzeichnet, daß das Schwefelsäureanhydrid nur in die im Wege des Gases letzte Stufe der elektrischen Entarsenierungsanlage eingeleitet wird.CLAIM: Process for drying of for the purpose of separation of Arsenic o. The like. Multi-stage 'electrically purified roasting gases for sulfuric acid contact systems by introducing sulfuric anhydride, characterized in that the sulfuric anhydride only in the last stage of the electrical arsenic removal system by way of the gas is initiated.
DEM95327D 1926-07-11 1926-07-11 Process for drying roast gases to be electrically cleaned using sulfuric acid anhydride Expired DE486829C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEM95327D DE486829C (en) 1926-07-11 1926-07-11 Process for drying roast gases to be electrically cleaned using sulfuric acid anhydride

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEM95327D DE486829C (en) 1926-07-11 1926-07-11 Process for drying roast gases to be electrically cleaned using sulfuric acid anhydride

Publications (1)

Publication Number Publication Date
DE486829C true DE486829C (en) 1929-11-27

Family

ID=7322962

Family Applications (1)

Application Number Title Priority Date Filing Date
DEM95327D Expired DE486829C (en) 1926-07-11 1926-07-11 Process for drying roast gases to be electrically cleaned using sulfuric acid anhydride

Country Status (1)

Country Link
DE (1) DE486829C (en)

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