DE740186C - Process for separating sulfuric acid from gases - Google Patents

Process for separating sulfuric acid from gases

Info

Publication number
DE740186C
DE740186C DEI66125D DEI0066125D DE740186C DE 740186 C DE740186 C DE 740186C DE I66125 D DEI66125 D DE I66125D DE I0066125 D DEI0066125 D DE I0066125D DE 740186 C DE740186 C DE 740186C
Authority
DE
Germany
Prior art keywords
sulfuric acid
gases
filter
acid
electrodes
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
DEI66125D
Other languages
German (de)
Inventor
Dr Hermann Grimm
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.)
IG Farbenindustrie AG
Original Assignee
IG Farbenindustrie 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 IG Farbenindustrie AG filed Critical IG Farbenindustrie AG
Priority to DEI66125D priority Critical patent/DE740186C/en
Application granted granted Critical
Publication of DE740186C publication Critical patent/DE740186C/en
Expired legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C01INORGANIC CHEMISTRY
    • C01BNON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B17/00Sulfur; Compounds thereof
    • C01B17/69Sulfur trioxide; Sulfuric acid
    • C01B17/74Preparation

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Treating Waste Gases (AREA)

Description

Verfahren zur Abscheidung von Schwefelsäure aus Gasen Bei- der Entfernung von Schwefieltrioxyd@ oder Schwefelsäuredämpfen aus gegebenenfalls noch Stickoxyde enthaltenden Gasen mittels elektrischer Hochspannung benutzt man Elektrofilter aus. Metallen, wie Blei,oder Eisen. Diese Metalle werden von den in das Filter geleiteten Säuredämpfen sowie von der an der Elektrode niedergeschlagenen Säure stark angegriffen. Man hat daherauch schon vorgeschlagen, für den Bau der Elektrofilter Ferrosilicium oder Steinzeug zu verwenden. Hierbei besteht der Nachteil, @daß der Bau des Filters infolge icles Gewichts diesier Werkstoffe wesentlich kompliziert wird. Außerdem sind die aüs ihnen hergestellten Einzelteile des Filters schwer auswechselbar.Process for separating sulfuric acid from gases during removal of sulfur trioxide or sulfuric acid vapors from nitrogen oxides, if necessary containing gases by means of electrical high voltage one uses electrostatic precipitators. Metals such as lead or iron. These metals are drawn from the ones fed into the filter Strongly attacked by acid fumes and by the acid deposited on the electrode. It has therefore also already been proposed that ferrosilicon be used for the construction of the electrostatic precipitator or use stoneware. The disadvantage here is that the construction of the filter as a result of the weight of these materials becomes considerably more complicated. aside from that the individual parts of the filter made from them are difficult to replace.

Es wurde gefunden, @daß @es in. einfaciiz#r We:;s;e gelingt, diese Nachteile zu vermeiden., wenn man diie -Niederschlagsflächen dies Elektrofilters aus säurebeständigen Kunststoffgeweben herstellt, die mit Schwefelsäure berlesfelt werden. Als derartige Kunststoffe seien insbesondere Polymerisate auf der Basis des Vinylchlorids genannt. Ein solches Filter widersteht nicht nur allen Säureangriffen, sondern man kann auch die Filterkonstruktion ,sehr leicht ausführen und die Niederschlagselektroden bei Reparaturen sehr leicht und schnell auswechseln. Dieser Vort e. il macht das, Verfahren sowohl den mit keram.: ,chen Baustoffen als auch den mit Elektroden ,aus Metallen arbe.tenden Verfahren weit überlegen. Während @es praktisch unmöglich isst, die ,aus Metallplatten: bestsehenden Niederschlags,e#,ektrodien zwischen den üblicheriveise in einem Rahmen zusam-, mengefaßten Sprühelektroden nach obren oder unten aus dem Filter herauszunehmen, 'ist es bei dem vorliegenden. Verfahren ohne weiteres möglich, die Tücher, aus denen die Niederschlagselektroden biestehen, in einfacher Weise innerhalb des Filters zusammenzurollen und herauszunehmen.It was found that @es in. Einfaciiz # r We:; s; e succeeds in this Avoid disadvantages. If you use the precipitation areas this electrostatic precipitator made from acid-resistant synthetic fabrics coated with sulfuric acid will. Such plastics are, in particular, based on polymers called of vinyl chloride. Such a filter not only resists all acid attacks, but you can also easily do the filter construction and the collecting electrodes can be exchanged very easily and quickly in the event of repairs. This advantage e. il does that Process both those with ceramic building materials and those with electrodes Far superior to metal-working processes. While @it is practically impossible to eat, the, made of metal plates: best-looking precipitation, e #, ektrodien between the usual forms in a frame summarized spray electrodes to the top or bottom of the To take out the filter, 'it is with the present one. Procedure easily possible, the cloths that make up the collecting electrodes in a simple manner roll it up inside the filter and take it out.

Die zur Berieselung der Niederschlagselektrode verwendete Schwefelsäure kann beliebiger Art und Konzentration sein. Das Verfahren kann beispielsweise in der Sch,.vefels,äürefabrikation sowohl nach dem Kammer- als auch dem Turm- oder Kontaktverfahr-6n eingesetzt werden. Hierbei stören auch gegebenenfalls in den zu reinigenden Gasen enthaltene Stickoxyde nicht. Bei Kammer- oder Turmverfahren kann es in manchen Fällen. zweckmäßig sein, das Elektrofilter in einem Gay-Lus:sac-Turm einzubauen. Beispiel In einem Elektrofilter von i o, 5 qm im Horizontalsichnitt befinden sich zehn Nieders:chlagselektroden. Diese bestehenaus 11,5 qm großen Tüchern aus Fasern aus chlori,ertexn Polyvinylchlorid, die durch einen Rohrrahmen aus demselben Werkstoff gehalten werden. Die Tücher werden stündlich mixt 5 .cbm 75%iger Sch@yiefelsäure berieselt. Die zwischen den Elektroden des Filters angelegte Spannung beträgt 5o ooo Volt. Durch das Filter werden stündlich io ooo cbm Abgase einer nach dem Turmverfahren arbeitenden Schwefelsäurefabrk geschickt. Die Abgase enthalten im Mittel je Kubikmeter o,6 g S O.3 und o,25 g HN03. Die das Elektrofilter verlassenden Gase enthalten je Kubikmeter o,o8g S03.The sulfuric acid used to sprinkle the collecting electrode can be of any type and concentration. The method can be used, for example, in the Sch, .vefels, outer production according to the chamber as well as the tower or contact method. Nitrogen oxides possibly contained in the gases to be cleaned do not interfere here either. In the case of chamber or tower proceedings, it can in some cases. be useful to install the electrostatic precipitator in a Gay-Lus: sac tower. Example In an electrostatic precipitator with an area of 10.5 square meters in a horizontal section there are ten lowering electrodes. These consist of 11.5 square meter cloths made of fibers made of chlorinated polyvinyl chloride, which are held in place by a tubular frame made of the same material. The cloths are mixed every hour with 5 cbm of 75% Sch @ yiefelsäure sprinkled. The voltage applied between the electrodes of the filter is 50,000 volts. 10000 cbm of exhaust gases from a sulfuric acid factory operating according to the tower process are sent through the filter every hour. The exhaust gases contain on average 0.6 g S O.3 and 0.25 g HN03 per cubic meter. The gases leaving the electrostatic precipitator contain 0.08 g of S03 per cubic meter.

Claims (4)

PATENTANSPRUCH: Verfahren zur,elektrostatisichen Abscheidung von Schwefelsäure aus Gasen an mit Schwefelsäure berieselten Niederschlagselektroden, dadurch gekenn7,e:chnet, daß Gewebe aus säurefesten Kunststoffen, z. B. PATENT CLAIM: Process for electrostatic separation of sulfuric acid from gases on precipitation electrodes sprinkled with sulfuric acid, thereby marked7, e: chnet, that fabric made of acid-resistant plastics, z. B. Polymidrisaten auf Basis des Vinylchlorids, als, Niederschlagselektroden verwendet werden. Polymidrisates based on vinyl chloride, can be used as, collecting electrodes. Zur Abgrenzung desAnmeldungsgegenstandes vom Stand der Technik sind im Erteilungsverfahren in Betracht gezogen worden deutsche Patentschrift Nr. 368 283, 4. i 9o64; P.abst, Kunststoff-Taschenbuch, To delimit the subject of the registration from the state of the art, Germans were taken into account in the granting procedure U.S. Patent No. 368,283, April 19, 1964; P.abst, plastic paperback, 4. Aufl., 193c).4th ed., 193c).
DEI66125D 1939-12-08 1939-12-08 Process for separating sulfuric acid from gases Expired DE740186C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEI66125D DE740186C (en) 1939-12-08 1939-12-08 Process for separating sulfuric acid from gases

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEI66125D DE740186C (en) 1939-12-08 1939-12-08 Process for separating sulfuric acid from gases

Publications (1)

Publication Number Publication Date
DE740186C true DE740186C (en) 1943-10-26

Family

ID=7196475

Family Applications (1)

Application Number Title Priority Date Filing Date
DEI66125D Expired DE740186C (en) 1939-12-08 1939-12-08 Process for separating sulfuric acid from gases

Country Status (1)

Country Link
DE (1) DE740186C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2851757A1 (en) * 1978-11-30 1980-06-12 Weber Ekkehard Precipitation electrode for electrofilter - consists of textile and felt comprising ninety per cent silicon di:oxide fibres with metal additives

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE368283C (en) * 1920-12-24 1923-02-02 Metallbank Process for arsenic removal from roast gases
DE419064C (en) * 1924-11-01 1925-09-19 Anilin Fabrikation Ag Process for arsenic removal from roast gases

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE368283C (en) * 1920-12-24 1923-02-02 Metallbank Process for arsenic removal from roast gases
DE419064C (en) * 1924-11-01 1925-09-19 Anilin Fabrikation Ag Process for arsenic removal from roast gases

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2851757A1 (en) * 1978-11-30 1980-06-12 Weber Ekkehard Precipitation electrode for electrofilter - consists of textile and felt comprising ninety per cent silicon di:oxide fibres with metal additives

Similar Documents

Publication Publication Date Title
WO2002050346A1 (en) Method for electrostatic spinning of polymers to obtain nanofibers and microfibers
DE740186C (en) Process for separating sulfuric acid from gases
DE3900552A1 (en) ELECTRIC FILTERS IN PLASTIC AND / OR METAL, ESPECIALLY LEAD
DE1908747B2 (en) Process for the separation of a titanium dioxide pigment produced by high-temperature oxidation
DE438834C (en) Electric gas cleaning device in which spray and precipitation electrodes are alternately positioned one behind the other in a gas duct perpendicular to the gas flow
DE2025389C3 (en) Process for cleaning gases which contain mercury or mercury compounds
DE2348474C3 (en) Process for the preparation of aqueous solutions containing predominantly fluorine ions
DE2823714A1 (en) PROCESS FOR THE RECOVERY OF LEAD FROM MATERIAL CONTAINING LEAD SULFIDE
DE2705895C2 (en) Process for isotope separation
EP0518075B1 (en) Process for reprocessing contaminated water containing hydrochloric acid
DE10309449B4 (en) Process for the separation of titanium tetrachloride
DE684342C (en) Electrostatic precipitator with corrugated collecting electrodes
DE919884C (en) Process for cleaning ion exchangers
DE747771C (en) Electrical cleaning of gases containing electrically non-conductive or poorly conductive dust
DE937559C (en) Process for removing gases, in particular hydrogen, and of suspended, non-metallic impurities from aluminum and its alloys by chlorination and filtration
DE1258402B (en) Process for the production of titanium tetrachloride
DE2136557A1 (en) Chloride removal - from zinc waste, with recovery of zinc
DE1929661A1 (en) Process for cleaning cadmium solutions
DE1113444B (en) Electrostatic precipitator for the purification of chlorine gas produced during the electrolysis of aqueous alkali halide solutions
DE628483C (en) Process for removing inorganic impurities from aqueous solutions of acetic acid
DE429822C (en) Process to achieve bright and grease-free metal surfaces
DE736285C (en) Process for the separation of easily oxidizable volatile chlorides (especially iron chlorides) and difficult to oxidize volatile chlorides or oxychlorides
DE86977C (en)
DE87005C (en)
AT244070B (en) Plant and process for cleaning the exhaust gases of an alumina electrolysis plant