DE3727635A1 - Method for removing styrene from the exhaust air - Google Patents

Method for removing styrene from the exhaust air

Info

Publication number
DE3727635A1
DE3727635A1 DE19873727635 DE3727635A DE3727635A1 DE 3727635 A1 DE3727635 A1 DE 3727635A1 DE 19873727635 DE19873727635 DE 19873727635 DE 3727635 A DE3727635 A DE 3727635A DE 3727635 A1 DE3727635 A1 DE 3727635A1
Authority
DE
Germany
Prior art keywords
styrene
exhaust air
potassium permanganate
emission concentration
aqueous solution
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.)
Ceased
Application number
DE19873727635
Other languages
German (de)
Inventor
Erfinder Wird Nachtraeglich Benannt Der
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.)
VEB Spezialbaukombinat Magdeburg
Original Assignee
VEB Spezialbaukombinat Magdeburg
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 VEB Spezialbaukombinat Magdeburg filed Critical VEB Spezialbaukombinat Magdeburg
Priority to DE19873727635 priority Critical patent/DE3727635A1/en
Publication of DE3727635A1 publication Critical patent/DE3727635A1/en
Ceased legal-status Critical Current

Links

Classifications

    • 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
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/46—Removing components of defined structure
    • B01D53/72—Organic compounds not provided for in groups B01D53/48 - B01D53/70, e.g. hydrocarbons

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Biomedical Technology (AREA)
  • Environmental & Geological Engineering (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Treating Waste Gases (AREA)

Abstract

The invention relates to a method for retaining styrene from the exhaust air. The object of the invention is to create a method which includes, under economic conditions, a gas scrubber for removing small amounts of styrene from the exhaust air in order to comply with limiting values of emission concentration in the surroundings of the emitting factories even when the emission concentration is below 3 g/m<3>. The object is achieved according to the invention by the styrene being retained from the exhaust air free of waste water and waste product via an aqueous solution of potassium permanganate.

Description

Die Erfindung betrifft ein Verfahren zum Rückhalten von Styren aus der Abluft, insbesondere bei einer geringen Konzentration an Styren in der Abluft.The invention relates to a method for restraint of styrene from the exhaust air, especially in one low concentration of styrene in the exhaust air.

Es ist bekannt, daß mit unterschiedlichen Reinigungsverfahren das Styren aus der Abluft entfernt werden kann.It is known that with different cleaning methods the styrene is removed from the exhaust air can.

Die international bekannten Verfahren sind solche zur Rückgewinnung des Styrens durch Tieftemperaturkondensation (Einsatz von Kältefallen) [1] oder durch Adsorption von Styren an geeigneten Adsorptionsmaterialien und anschließende Desorption (DD-PS 2 19 955), [2] und solche zur Verbrennung des Styrens durch thermische und katalytische Verfahren evtl. mit vorheriger Anreicherung des Styrens durch Adsorber [3].The internationally known methods are those for Recovery of styrene by low temperature condensation (Use of cold traps) [1] or through Adsorption of styrene on suitable adsorption materials and subsequent desorption (DD-PS 2 19 955), [2] and those for thermal styrene combustion and catalytic processes, possibly with previous enrichment of styrene by adsorbers [3].

Nachteile dieser Verfahren sind hohe Investitions- und Betriebskosten, so daß sie nur dann ökonomisch vertretbar eingesetzt werden können, wenn die Styrenkonzentration im Bereich 3 g/m³ liegt [1] und entsprechend lohnende Mengen an Styren zurückgewonnen werden können bzw. entsprechend geringe Brennstoffmengen für die Verbrennung des Styrens benötigt werden.Disadvantages of these processes are high investment and Operating costs so that they are only economically viable can be used when the styrene concentration is in the range of 3 g / m³ and accordingly worthwhile amounts of styrene can be recovered or correspondingly small amounts of fuel for combustion of styrene are needed.

Der Erfindung liegt die Aufgabe zugrunde, ein ökonomisches Verfahren zum Entfernen von Styren aus der Abluft zu entwickeln, das geringe Mengen Styren aus der Abluft schadlos so weit beseitigt, daß Emissionsgrenzwerte unterschritten werden und auch dann einzuhalten sind, wenn die Emissionskonzentrationen geringer 3 g/m³ sind, d. h., wenn eine Verbrennung oder Lösungsmittelrückgewinnung zu teuer wird.The invention has for its object an economic Process for removing styrene from the exhaust air too develop small amounts of styrene from the exhaust air harmlessly removed so far that emission limit values fall below and are then to be observed, if the emission concentrations are less than 3 g / m³, d. i.e. when a combustion or solvent recovery becomes too expensive.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß der Abluftstrom in einer geeigneten Vorrichtung einer ein- oder mehrstufigen Gaswäsche unterzogen wird. Durch Untersuchungen wurde nachgewiesen, daß Kaliumpermanganat dazu geeignet ist. This object is achieved in that the exhaust air flow in a suitable device single or multi-stage gas scrubbing. Studies have shown that Potassium permanganate is suitable for this.  

Es folgt eine chemische Umsetzung durch in der Waschflüssigkeit (Wasser) gelöstes Kaliumpermanganat vermutlich mit folgendem Reaktionsablauf:A chemical conversion follows in the Washing liquid (water) dissolved potassium permanganate probably with the following reaction sequence:

In neutraler Lösung findet folgende Reaktion des Kaliumpermanganates statt:The following reaction of the Potassium permanganates instead:

Die Gaswäsche erfolgt unter Normalbedingungen. Durch etwa 4,5 g Kaliumpermanganat wird 1 g Styren oxidiert. Kaliumpermanganat muß entsprechend der ausgewaschenen Styrenmenge zugeführt werden. Die wäßrige Lösung besteht aus 0,01 g bis 6 g Kaliumpermanganat auf 100 ml Wasser.The gas scrubbing takes place under normal conditions. About 4.5 g of potassium permanganate makes 1 g of styrene oxidized. Potassium permanganate must correspond to the washed out amount of styrene are supplied. The aqueous solution consists of 0.01 g to 6 g of potassium permanganate to 100 ml of water.

In etwa der gleichen Menge des Verbrauches an Kaliumpermanganat fällt Braunstein als Nebenprodukt an, der nach Filtration der Manganaufbereitung zugeführt werden kann. Damit ist das Verfahren abproduktfrei. Die Filtration kann kontinuierlich oder diskontinuierlich vorgenommen werden, ebenso die Angabe des Oxidationsmittels Kaliumpermanganat.Approximately the same amount of consumption Potassium permanganate is a by-product of manganese dioxide, which is fed to the manganese preparation after filtration can be. The process is thus free of waste products. Filtration can be continuous or discontinuous be made, as well as the specification of the Potassium permanganate oxidizing agent.

Das Verfahren ist abwasserfrei, da das Filtrat wieder dem Prozeß zugeführt wird. Filter- und Verdunstungsverluste müssen durch Frischwasser ersetzt werden.The process is wastewater-free since the filtrate is back is fed to the process. Filter and evaporation losses must be replaced with fresh water.

Die Erfindung ist beispielsweise bei der Verarbeitung von UP-Harzen anwendbar. Da die Luft am Arbeitsplatz maximal 200 mg/m³ (MAKD-Wert) Styren enthalten darf, fallen beim Handlaminier- und Spritzverfahren der GUP-Verarbeitung hohe Abluftmengen mit geringen Styrenkonzentrationen an.The invention can be used, for example, in the processing of UP resins. Since the air in the workplace may contain a maximum of 200 mg / m³ (MAK D value) of styrene, high levels of exhaust air with low styrene concentrations are generated in the hand lamination and spraying process of GUP processing.

Die mittlere Styrenkonzentration in der Abluft liegt im Bereich 50 mg/m³ bis 200 mg/m³. The mean styrene concentration in the exhaust air is in the range of 50 mg / m³ to 200 mg / m³.  

Durch das erfindungsgemäße Verfahren kann in einer Stufe der Gaswäsche 50% bis 70% des Styrens entfernt werden. Damit können ohne hohe Betriebs- und Investitionskosten die maximal zulässigen Emissionswerte eingehalten werden.The method according to the invention can be used in one Gas scrubbing stage removes 50% to 70% of styrene will. So that without high operating and Investment costs the maximum allowable emission values be respected.

Claims (1)

Verfahren zum Entfernen von Styren aus der Abluft, insbesondere bei einer geringen Konzentration an Styren in der Abluft, gekennzeichnet dadurch, daß das Styren mittels Gaswäsche über eine wäßrige Lösung von Kaliumpermanganat Abwasser- und Abprodukt frei aus der Abluft zurückgehalten wird.Process for removing styrene from the exhaust air, in particular in the case of a low concentration of styrene in the exhaust air, characterized in that the styrene is retained by means of gas scrubbing over an aqueous solution of potassium permanganate, free of waste water and waste product from the exhaust air.
DE19873727635 1987-08-19 1987-08-19 Method for removing styrene from the exhaust air Ceased DE3727635A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19873727635 DE3727635A1 (en) 1987-08-19 1987-08-19 Method for removing styrene from the exhaust air

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19873727635 DE3727635A1 (en) 1987-08-19 1987-08-19 Method for removing styrene from the exhaust air

Publications (1)

Publication Number Publication Date
DE3727635A1 true DE3727635A1 (en) 1989-03-02

Family

ID=6334050

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19873727635 Ceased DE3727635A1 (en) 1987-08-19 1987-08-19 Method for removing styrene from the exhaust air

Country Status (1)

Country Link
DE (1) DE3727635A1 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5209890A (en) * 1991-10-25 1993-05-11 Superliners Usa, Inc. Styrene scrubbing process for pipe and sewer liner method
US5256367A (en) * 1991-10-25 1993-10-26 Superliners Usa, Inc. Pipe and sewer lining method
CN111203085A (en) * 2020-01-07 2020-05-29 珠海格力电器股份有限公司 Air cleaning composition, air cleaning tool liquid, method of using the same, air cleaning method, and ventilation device
CN112295386A (en) * 2019-08-02 2021-02-02 中国石油化工股份有限公司 Activating agent for manganese dioxide generated in styrene waste gas treatment and application thereof
IT202100027104A1 (en) * 2021-10-21 2023-04-21 I N A I L Istituto Naz Per Lassicurazione Contro Gli Infortuni Sul Lavoro COLORIMETRIC DOSIMETER FOR THE DETECTION AND/OR MONITORING OF VOLATILE TOXIC COMPOUNDS

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2316421B2 (en) * 1973-04-02 1979-08-09 Suppan, Friedrich, 5353 Mechernich Process for the oxidation of undesirable, preferably odor-generating substances in exhaust air or in exhaust gases
DD219955A1 (en) * 1983-12-05 1985-03-20 Leipzig Chemieanlagen PROCESS FOR ADSORPTION OF STYRENE FROM EXHAUST AIR

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2316421B2 (en) * 1973-04-02 1979-08-09 Suppan, Friedrich, 5353 Mechernich Process for the oxidation of undesirable, preferably odor-generating substances in exhaust air or in exhaust gases
DD219955A1 (en) * 1983-12-05 1985-03-20 Leipzig Chemieanlagen PROCESS FOR ADSORPTION OF STYRENE FROM EXHAUST AIR

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5209890A (en) * 1991-10-25 1993-05-11 Superliners Usa, Inc. Styrene scrubbing process for pipe and sewer liner method
US5256367A (en) * 1991-10-25 1993-10-26 Superliners Usa, Inc. Pipe and sewer lining method
CN112295386A (en) * 2019-08-02 2021-02-02 中国石油化工股份有限公司 Activating agent for manganese dioxide generated in styrene waste gas treatment and application thereof
CN111203085A (en) * 2020-01-07 2020-05-29 珠海格力电器股份有限公司 Air cleaning composition, air cleaning tool liquid, method of using the same, air cleaning method, and ventilation device
IT202100027104A1 (en) * 2021-10-21 2023-04-21 I N A I L Istituto Naz Per Lassicurazione Contro Gli Infortuni Sul Lavoro COLORIMETRIC DOSIMETER FOR THE DETECTION AND/OR MONITORING OF VOLATILE TOXIC COMPOUNDS

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Legal Events

Date Code Title Description
OP8 Request for examination as to paragraph 44 patent law
8181 Inventor (new situation)

Free format text: HENSE, CHRISTOPH, DDR 7234 KOHREN-SAHLIS, DD SCHULTZ, HANS-JOACHIM, DR.RER.NAT., DDR 7025 LEIPZIG, DD

8131 Rejection