DE876836C - Process for the electrical pretreatment of gases to be cleaned mechanically by washing suspended particles - Google Patents

Process for the electrical pretreatment of gases to be cleaned mechanically by washing suspended particles

Info

Publication number
DE876836C
DE876836C DES5474D DES0005474D DE876836C DE 876836 C DE876836 C DE 876836C DE S5474 D DES5474 D DE S5474D DE S0005474 D DES0005474 D DE S0005474D DE 876836 C DE876836 C DE 876836C
Authority
DE
Germany
Prior art keywords
suspended particles
gases
washing
cleaned mechanically
pretreatment
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
DES5474D
Other languages
German (de)
Inventor
Adam Arras
Friedrich Wilhelm Hoss
Werner Dipl-Ing Moebus
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 DES5474D priority Critical patent/DE876836C/en
Application granted granted Critical
Publication of DE876836C publication Critical patent/DE876836C/en
Expired legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B03SEPARATION 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
    • B03CMAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C3/00Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
    • B03C3/017Combinations of electrostatic separation with other processes, not otherwise provided for

Landscapes

  • Electrostatic Separation (AREA)

Description

Verfahren zur elektrischen Vorbehandlung von mechanisch durch Waschen von Schwebeteilchen zu reinigenden Gasen Die Erfindung bezieht sich auf die Entstaubung von Gasen oder Gasgemischen durch Waschen oder Berieseln mit Flüssigkeit. Solche Waschanlagen, die aus Rieseltürmen, Schleuderwäschern, Schlagwäschern, Naßlüftern od. dgl. bestehen, befriedigen hinsichtlich des Staubgehaltes des Reingases nicht vollständig, weil es mit den bisher üblichen Verfahren und Einrichtungen nicht möglich war, auch die feineren und feinsten Staubanteile zu erfassen und auszuwaschen. Um hier Abhilfe zu schaffen, «-erden der Erfindung gemäß die Staubteilchen, ehe das Gas in den Wäscher gelangt, einer Vorbehandlung unterworfen, durch die die feineren und feinsten Anteile dem Einfluß der Waschflii'ssigkeit leichter als bisher zugänglich gemacht werden. Diese Vorbehandlung besteht darin, daß das mit Schwebeteilchen verunreinigte Gas vor Erreichen der Waschanlage dem Einfluß einer Vorrichtung ausgesetzt wird, durch welche die Schwebeteilchen elektrisch aufgeladen werden. Diese Vorrichtung kann in einer Röntgenröhre, einem Flammenionisator, einem elektrostatischen mit einer Gleich-oder Wechselspannung betriebenen Sprühfeld oder sonst einem Gerät bestehen, das geeignet ist, die Schwebeteilchen aufzuladen. Es hat sich gezeigt, daß die Teilchen durch diese Aufladung eine erhöhte Affinität zu der Waschflüssigkeit erlangen, an die sie ihre Ladung abgeben. Auch tritt eine mehr oder weniger erhebliche Kornvergrößerung der Staubteilchen ein. Auf Grund dieser Vorbehandlung läßt sich die Leistung der nachgeschalteten Waschanlage in bezug auf Staubfreiheit des Reingases in einem bisher nicht erreichten Ausmaß steigern.Process for electrical pre-treatment of mechanical by washing Gases to be Purified of Suspended Particles The invention relates to dedusting of gases or gas mixtures by washing or sprinkling with liquid. Such Washing systems consisting of trickle towers, spin washers, blow washers, wet fans Od. Like. Are not satisfactory in terms of the dust content of the clean gas completely, because it was not possible with the methods and facilities that have been customary up to now was to capture and wash out the finer and finest dust fractions. Around To remedy this situation, according to the invention, ground the dust particles before that Gas enters the scrubber, subjected to a pretreatment through which the finer and the finest proportions more easily accessible to the influence of the washing liquid than before be made. This pretreatment consists in that the contaminated with suspended particles Gas is exposed to the influence of a device before reaching the washing facility, through which the suspended particles are electrically charged. This device can be used in an X-ray tube, a flame ionizer, an electrostatic one a direct or alternating voltage operated spray field or some other device, that is suitable for charging the suspended particles. It has been shown that the particles gain an increased affinity for the washing liquid through this charging that they deliver their cargo. Also occurs more or less significant Grain enlargement of the dust particles. On the basis of this pretreatment can the performance of the downstream washing system with regard to the absence of dust in the clean gas increase to an extent not previously achieved.

Zur Reinigung von Gasen sind Anlagen bekannt, bei denen auf ein Elektrofilter, das zum Aufladen und Abscheiden der Schwebeteilchen dient, eine Rieselanlage od. dgl. folgt. Zum gleichen Zweck hat man auch schon eine Berieselungsanlage zwischen zwei Elektrofiltern eingeschaltet. Ferner ist es bekannt, eine Berieselungsanlage vorzugsweise zur Nebelbildung einem Elektrofilter vörzuschalten. Im Gegensatz zu diesen bekannten Anordnungen handelt es sich bei der Erfindung um eine Gasreinigung ausschließlich durch Waschen oder Berieseln mit der Besonderheit, daß die Schwebeteilchen vor dem Auswaschen oder Berieseln elektrisch aufgeladen werden. Bei Verwendung eines elektrostatischen Sprühfeldes zum Aufladen braucht dieses im Vergleich zu einem Elektrofilter, das seiner Aufgabe gemäß die Schwebeteilchen nicht nur elektrisch aufzuladen, sondern auch abzuscheiden hat, nur kurz zu sein und kann infolgedessen klein und billig gehalten werden.Systems for cleaning gases are known in which an electrostatic precipitator, which is used to charge and separate the suspended particles, a trickle system od. the like follows. For the same purpose there is already a sprinkler system between two electrostatic precipitators switched on. It is also known to have a sprinkler system preferably upstream to an electrostatic precipitator to generate mist. In contrast to In these known arrangements, the invention is a gas purification exclusively by washing or sprinkling with the peculiarity that the suspended particles be charged electrically before washing or sprinkling. When using a Electrostatic spray field for charging needs this compared to a Electrostatic precipitator, which, according to its task, not only removes suspended particles electrically to charge, but also to deposit, has to be short and can as a result kept small and cheap.

Claims (1)

PATENTANSPRUCH: Verfahren zur elektrischen Vorbehandiung von mechanisch durch Waschen von Schwebeteilchen zu reinigenden Gasen, dadurch gekennzeichnet, daß die Schwebeteilchen zwecks Erhöhung ihrer Affinität zu der Waschflüssigkeit der kurzzeitigen, ihre Abscheidung -ausschließende Einwirkung eines sprühenden elektrostatischen Feldes ausgesetzt werden, indem an Stelle des bisher üblichen Elektrofilters nur eine elektrische Aufladevorrichtung vor die Gaswaschung geschaltet wird. PATENT CLAIM: A method for the electrical pretreatment of gases to be cleaned mechanically by washing suspended particles, characterized in that the suspended particles are exposed to the brief effect of a spraying electrostatic field, which excludes their deposition, in order to increase their affinity for the washing liquid, by instead of the previously usual Electrostatic precipitator only has an electrical charging device connected before the gas scrubbing.
DES5474D 1941-02-01 1941-02-01 Process for the electrical pretreatment of gases to be cleaned mechanically by washing suspended particles Expired DE876836C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DES5474D DE876836C (en) 1941-02-01 1941-02-01 Process for the electrical pretreatment of gases to be cleaned mechanically by washing suspended particles

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DES5474D DE876836C (en) 1941-02-01 1941-02-01 Process for the electrical pretreatment of gases to be cleaned mechanically by washing suspended particles

Publications (1)

Publication Number Publication Date
DE876836C true DE876836C (en) 1953-05-18

Family

ID=7471376

Family Applications (1)

Application Number Title Priority Date Filing Date
DES5474D Expired DE876836C (en) 1941-02-01 1941-02-01 Process for the electrical pretreatment of gases to be cleaned mechanically by washing suspended particles

Country Status (1)

Country Link
DE (1) DE876836C (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3329637A1 (en) * 1983-06-17 1984-12-20 Gottfried Bischoff Bau kompl. Gasreinigungs- und Wasserrückkühlanlagen GmbH & Co KG, 4300 Essen Apparatus for dust removal from industrial gases
DE3713651A1 (en) * 1987-04-23 1988-11-17 Thomas F Burger AIR CLEANER

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3329637A1 (en) * 1983-06-17 1984-12-20 Gottfried Bischoff Bau kompl. Gasreinigungs- und Wasserrückkühlanlagen GmbH & Co KG, 4300 Essen Apparatus for dust removal from industrial gases
DE3713651A1 (en) * 1987-04-23 1988-11-17 Thomas F Burger AIR CLEANER

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