DE859051C - Process for the fine purification of distillation gases - Google Patents

Process for the fine purification of distillation gases

Info

Publication number
DE859051C
DE859051C DEM7978A DEM0007978A DE859051C DE 859051 C DE859051 C DE 859051C DE M7978 A DEM7978 A DE M7978A DE M0007978 A DEM0007978 A DE M0007978A DE 859051 C DE859051 C DE 859051C
Authority
DE
Germany
Prior art keywords
gas
distillation gases
added
fine purification
electric
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
DEM7978A
Other languages
German (de)
Inventor
Fritz Dr Kolbe
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 DEM7978A priority Critical patent/DE859051C/en
Application granted granted Critical
Publication of DE859051C publication Critical patent/DE859051C/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
    • B03C3/01—Pretreatment of the gases prior to electrostatic precipitation
    • B03C3/013—Conditioning by chemical additives, e.g. with SO3

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Industrial Gases (AREA)

Description

Verfahren zur Feinreinigung von Destillationsgasen Bei der Feinreinigung von Destillationsgasen, wie beispielsweise Kokerei- und Stadtgasen, ist bekannt, durch elektrische Entteerung mindestens 99,91/o der ursprünglich im Gas enthaltenen Teerbestandteile auszuscheiden bzw. auf einen Teergehalt im Reingas von unter o,01 g/m3 hinzuarbeiten. Um die auf Stickoxyde im Gas zurückzuführende bekannte Gumbildung zu verhüten, hat man bereits vorgeschlagen, eine restlose Entteerung der Destillationsgase auf elektrischem Wege in den bekannten Elektrofiltern durchz.u!führen. Diese Maßnahme erfordert aber naturgemäß eine Überdimensionierung bzw. Hintereinander- oder Nachschaltung mehrerer Elektrofilter und damit einen erheblichen Kostenaufwand, zumindest in den Anlagekosten. Aber auch die Betriebskosten werden dadurch erhöht, da eine wesentlich größere Stromdichte zur Beseitigung der restlichen o, i 1/o Teerbestandteile nach Abscheidung der Hauptmasse erforderlich wird.Process for the fine cleaning of distillation gases During fine cleaning of distillation gases, such as coke oven and town gases, is known by electrical tar removal at least 99.91 / o that originally contained in the gas Separate tar components or to a tar content in the clean gas of less than 0.01 g / m3 to work towards this. About the well-known gum formation that can be traced back to nitrogen oxides in the gas To prevent it, it has already been proposed that the distillation gases be completely de-tarred to be carried out electrically in the known electrostatic precipitators. This measure but naturally requires oversizing or connecting in series or downstream several electrostatic precipitators and thus a considerable expense, at least in the Investment costs. But the operating costs are also increased as a result, since one is significantly greater current density to remove the remaining o, i 1 / o tar constituents Separation of the main mass is required.

Es wurde nun überraschenderweise gefunden, daß auf eine restlose Elektroentteerung, ohne die Gefahr der Gumbildung oder andere Nachteile heraufzubeschwören, dann verzichtet werden kann, wenn eine geringe Luftmenge dem Gas vor der Elektroentteerung zugesetzt wird, vorteilhafterweise in Verbindung mit der gegebenenfalls anschließenden Trockenentschwefelung des Gases alsdann diejenige Luftmenge, die zur Regenerierung der Reinigungsmasse an sich erforderlich wäre.It has now been found, surprisingly, that a complete electric tar removal, without causing the risk of gum formation or other disadvantages, then waived can be added if a small amount of air is added to the gas prior to the electric tar removal is, advantageously in connection with the optionally subsequent dry desulphurisation of the gas then that amount of air needed to regenerate the Cleaning compound itself would be required.

Bei dem Verfahren nach der Erfindung wird also bewußt auf eine vollständige Elelctroentteerung des Gases verzichtet und diese nur bis auf etwa 99,9% getrieben bzw. absolut genommen, über mehr als o,oi bis o,o2 g/m3 im Reingas gehalten, um auf diese Weise Überdimensionierungen der Elektrofilteranlage ohne schädliche Rückwirkung auf die weitere Gasreinigung oder -verwendung zu ersparen.The method according to the invention is therefore consciously aimed at a complete Elelctroentteerung of the gas dispensed with and this only driven up to about 99.9% or, taken in absolute terms, kept in the clean gas for more than o, oi to o, o2 g / m3 In this way, overdimensioning of the electrostatic precipitator system without harmful repercussions to save on further gas cleaning or use.

Eine Erklärung für die Verhinderung der Gumbildung trotz Belassung von restlichen Teerbestandteilen im Gas kann mit Sicherheit nicht gegeben werden, sie mag durch Oxydationswirkung auf die restlichen Gas-, insbesondere NO- und Teerbestandteile zurückzuführen sein, wobei die schnelle Wirkung der Oxydation durch die unter dem Einfluß des elektrischen Feldes bewirkte Durcheinanderwirbelung der Moleküle bedingt sein mag.An explanation for the prevention of gum formation despite leaving it in place of remaining tar constituents in the gas cannot be given with certainty, it may have an oxidative effect on the remaining gas, especially NO and tar components due to the rapid effect of the oxidation being due to the under the Influence of the electric field caused the molecules to swirl around may be.

Claims (1)

PATENTANSPRÜCHE: i. Verfahren zur Feinreinigung von Destillationsgasen durch elektrische Entteerung und gegebenenfalls anschließende Trockenentschwefelung, dadurch gekennzeichnet, daß dem Gas vor der Elektroentteerung eine geringe Luftmenge zugesetzt wird. . 2.' Verfahren nach Anspruch i, dadurch gekennzeichnet, daß in Verbindung mit einer anschließenden Trockenentschwefelung des Gases diesem vor der Elektroentteerung die zur Regenerierung der Reinigungsmasse an sich erforderliche Luftmenge zugesetzt wird.PATENT CLAIMS: i. Process for the fine purification of distillation gases by electrical tar removal and, if necessary, subsequent dry desulphurisation, characterized in that a small amount of air is added to the gas prior to the electric tar removal is added. . 2. ' Method according to claim i, characterized in that in Connection with a subsequent dry desulphurization of the gas before this Electric de-taring the necessary for the regeneration of the cleaning compound itself Amount of air is added.
DEM7978A 1950-12-17 1950-12-17 Process for the fine purification of distillation gases Expired DE859051C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEM7978A DE859051C (en) 1950-12-17 1950-12-17 Process for the fine purification of distillation gases

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEM7978A DE859051C (en) 1950-12-17 1950-12-17 Process for the fine purification of distillation gases

Publications (1)

Publication Number Publication Date
DE859051C true DE859051C (en) 1952-12-11

Family

ID=7293955

Family Applications (1)

Application Number Title Priority Date Filing Date
DEM7978A Expired DE859051C (en) 1950-12-17 1950-12-17 Process for the fine purification of distillation gases

Country Status (1)

Country Link
DE (1) DE859051C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1141406B (en) * 1960-11-11 1962-12-20 Metallgesellschaft Ag Process for the detoxification of flammable gases

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1141406B (en) * 1960-11-11 1962-12-20 Metallgesellschaft Ag Process for the detoxification of flammable gases

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