DE2160313C3 - Process for cleaning extracted vapors from a polishing plant containing sulfuric acid and fluids for glass objects - Google Patents

Process for cleaning extracted vapors from a polishing plant containing sulfuric acid and fluids for glass objects

Info

Publication number
DE2160313C3
DE2160313C3 DE19712160313 DE2160313A DE2160313C3 DE 2160313 C3 DE2160313 C3 DE 2160313C3 DE 19712160313 DE19712160313 DE 19712160313 DE 2160313 A DE2160313 A DE 2160313A DE 2160313 C3 DE2160313 C3 DE 2160313C3
Authority
DE
Germany
Prior art keywords
sulfuric acid
acid
polishing
fluids
vapors
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
DE19712160313
Other languages
German (de)
Other versions
DE2160313B2 (en
DE2160313A1 (en
Inventor
Hans 8221 Achthal Gottler
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.)
ACHTHAL-MASCHINENBAU-GMBH 8221 NEUKIRCHEN
Original Assignee
ACHTHAL-MASCHINENBAU-GMBH 8221 NEUKIRCHEN
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 ACHTHAL-MASCHINENBAU-GMBH 8221 NEUKIRCHEN filed Critical ACHTHAL-MASCHINENBAU-GMBH 8221 NEUKIRCHEN
Priority to DE19712160313 priority Critical patent/DE2160313C3/en
Publication of DE2160313A1 publication Critical patent/DE2160313A1/en
Publication of DE2160313B2 publication Critical patent/DE2160313B2/en
Application granted granted Critical
Publication of DE2160313C3 publication Critical patent/DE2160313C3/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C15/00—Surface treatment of glass, not in the form of fibres or filaments, by etching
    • C03C15/02—Surface treatment of glass, not in the form of fibres or filaments, by etching for making a smooth surface
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/14—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by absorption

Description

Das Polieren von Gegenständen aus Glas, insbesondere aus Kristall- oder Bleikristallglas, erfolgt in einem BiiugL-timch vijii Schwefelsäure und flußsäurc. wobei das Bad aufgewärmt werden kann. Hierbei entweichen zwangsläufig säurehaltige Dämpfe, vornehmlich Sili/iumieirafluorid, die nicht ungereinigt ins Freie abströmen dürfen. Das Reinigen dieser Abdämpfe geschah daher bisher in Waschaggregaten verschiedenster Konstruktion, in denen sich Wasser zur Absorption der Säuredämpfe beland und wobei gegebenenfalls dem Waschwasser noch Neutralisaiionsiruiiel, /. B. Kalkhydrai. beigegeben wurden, um die Standzeit des Wassers zu verlängern. Das Waschwasscr eines solchen Wäschers mußte von Zeit /u Zeil abgelassen oder ausgewechselt werden, wobei das ahflieliende Waschwasser zuvor einer Abwasser-Neutralisationsanlage zu/uffihren war. ehe es gereinigt und geklart in eine Kanalisation oder ein Gewässer abfließen durfte.The polishing of objects made of glass, in particular made of crystal or lead crystal glass, takes place in a BiiugL-timch vijii sulfuric acid and hydrofluoric acid. whereby the bath can be warmed up. Acidic vapors inevitably escape, primarily silicon fluoride, which are not allowed to flow into the open uncleaned. The cleaning of these fumes was done therefore so far in washing units of various designs, in which water is used to absorb the Acid vapors and, if necessary, the washing water still Neutralisaiionsiruiiel, /. B. Kalkhydrai. were added to extend the service life of the water. The wash water of such a washer had to be drained or replaced from time to time, with the washing water flowing away was previously fed to a waste water neutralization system. before it is cleaned and cleared into one Drainage or a body of water was allowed to drain.

LJm diese Nachteile /u beseitigen, wird ein Verfahren zum Reinigen abgesaugter Dämpfe aus einer .Säurepolieranlage für Glasgegenstände in Vorschlag gebracht, welches in den Patentansprüchen dargelegt ist.In order to overcome these disadvantages, a method Suggested for cleaning extracted vapors from an acid polishing system for glass objects, which is set out in the claims.

to Dieses Verfahren beruht auf der bekannten Tatsache, daß Fluorwasserstoff in kalter konzentrierter Sehv. efelsäure absorbiert v» irtl.to This procedure is based on the known fact that hydrogen fluoride in cold concentrated sev. malic acid absorbed v »irtl.

Durch den erfindungsgemäßen Vorschlag werden die fluiirsaurehaltigen Abdämpfe chemisch schnell undBy the proposal according to the invention, the vapors containing fluid and acid chemically quickly and chemically

■ 5 wirksam im Ahsorptionswäscher gebunden. Zwar wird hierbei die Schwefelsäure flußsäurehallig »verunreinigt«, was aber in keiner Weise von Nachteil ist, da die Poliersäure aus Schwefel- und Fhißsäure nestei". Man kann daher z. B. eine Verbindungsleitung von uem mit .Schwefelsäure gefüllten Wäscher /um Poliersaurebehälter führen, so daß dadurch der Anteil der durch den PüUerprw/cli verbrauchten Schwefelsäure nachgefüll! werden kann. Man füllt nun nicht mehr die benötigte Schwefelsäure direkt in das Polierbad, sondern erst in den Wäscher, was automatisch mittels Niveauregelung des Wäschers und Zuflusses aus einem Sehwefelsaure-Vorratsbehäller erfolgen kann. Die Schwefelsäure im Wäscher reinigt somit die abgesaugten Dämpfe und kann außerdem dem Poliersäurebehältcr zugeführt werden.■ 5 effectively bound in the absorption scrubber. True will here the sulfuric acid is "contaminated" with hydrofluoric acid, but this is in no way a disadvantage, since the polishing acid is composed of sulfuric and hydrofluoric acid can therefore z. B. a connection line from uem with .Sulfuric acid-filled scrubber / lead to polishing acid container, so that the proportion of the Refill PüUerprw / cli used sulfuric acid! can be. You no longer fill the required sulfuric acid directly into the polishing bath, but first in the scrubber, which is done automatically by means of level control of the scrubber and inflow from a sulfuric acid storage container can be done. The sulfuric acid in the scrubber thus cleans the extracted vapors and can also be added to the polishing acid tank.

In jedem Falle erfolgt eine ganz wesentliche Kinsparung an WasserIn each case a very important one takes place Less water

Claims (2)

PatentansprücheClaims 1. Verfahren zum Reinigen abgesaugter Dämpfe aus einer Schwefelsäure und FliiBsäure enthaltenden Polieranlage für Glasgegenstände, dadurch gekennzeichnet, daß die aus dem Poliersäurebehälter abgesaugten Dämpfe in einen Absorptionswäscher geleitet werden, der anstelle Wasser oder einer alkalischen Flüssigkeit nur Schwefelsäure enthält.1. Process for cleaning extracted vapors from a sulfuric acid and hydrofluoric acid Polishing plant for glass objects, characterized in that that the vapors sucked out of the polishing acid container are passed into an absorption scrubber, which instead of water or an alkaline liquid contains only sulfuric acid. 2. Verfahren nach Anspruch 1. dadurch gekennzeichnet, daß die im Absorptionswäscher befindliche, mit Flußsäure versetzte Schwefelsäure in den Poliersäurebehälter geleitet wird.2. The method according to claim 1, characterized in that that the sulfuric acid in the absorption scrubber mixed with hydrofluoric acid in the Polishing acid container is passed.
DE19712160313 1971-12-04 1971-12-04 Process for cleaning extracted vapors from a polishing plant containing sulfuric acid and fluids for glass objects Expired DE2160313C3 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19712160313 DE2160313C3 (en) 1971-12-04 1971-12-04 Process for cleaning extracted vapors from a polishing plant containing sulfuric acid and fluids for glass objects

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19712160313 DE2160313C3 (en) 1971-12-04 1971-12-04 Process for cleaning extracted vapors from a polishing plant containing sulfuric acid and fluids for glass objects

Publications (3)

Publication Number Publication Date
DE2160313A1 DE2160313A1 (en) 1973-06-07
DE2160313B2 DE2160313B2 (en) 1979-08-30
DE2160313C3 true DE2160313C3 (en) 1980-05-08

Family

ID=5827065

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19712160313 Expired DE2160313C3 (en) 1971-12-04 1971-12-04 Process for cleaning extracted vapors from a polishing plant containing sulfuric acid and fluids for glass objects

Country Status (1)

Country Link
DE (1) DE2160313C3 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3343704A1 (en) * 1983-12-02 1985-06-13 Siemens AG, 1000 Berlin und 8000 München METHOD AND DEVICE FOR SETTING HOLE GRID PLATES, ESPECIALLY FOR PLASMA CATHODE DISPLAY

Also Published As

Publication number Publication date
DE2160313B2 (en) 1979-08-30
DE2160313A1 (en) 1973-06-07

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Legal Events

Date Code Title Description
OD Request for examination
C3 Grant after two publication steps (3rd publication)
8339 Ceased/non-payment of the annual fee