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DE3310047C2 - Process for gas cleaning behind boiler systems for fossil fuels using fabric filters - Google Patents

Process for gas cleaning behind boiler systems for fossil fuels using fabric filters

Info

Publication number
DE3310047C2
DE3310047C2 DE3310047A DE3310047A DE3310047C2 DE 3310047 C2 DE3310047 C2 DE 3310047C2 DE 3310047 A DE3310047 A DE 3310047A DE 3310047 A DE3310047 A DE 3310047A DE 3310047 C2 DE3310047 C2 DE 3310047C2
Authority
DE
Germany
Prior art keywords
fabric
filter
blast
compressed air
boiler
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
DE3310047A
Other languages
German (de)
Other versions
DE3310047A1 (en
Inventor
Heribert Dipl.-Ing. 4390 Gladbeck Dewert
Heinrich Ing.(grad.) 4600 Dortmund Gresch
Heinz Dipl.-Ing. Hölter
Heinrich Dipl.-Ing. 4390 Gladbeck Igelbüscher
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to DE3310047A priority Critical patent/DE3310047C2/en
Publication of DE3310047A1 publication Critical patent/DE3310047A1/en
Application granted granted Critical
Publication of DE3310047C2 publication Critical patent/DE3310047C2/en
Expired legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D46/00Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/02Particle separators, e.g. dust precipitators, having hollow filters made of flexible material
    • B01D46/04Cleaning filters
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D46/00Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/66Regeneration of the filtering material or filter elements inside the filter
    • B01D46/69Regeneration of the filtering material or filter elements inside the filter by means acting on the cake side without movement with respect to the filter elements, e.g. fixed nozzles
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D46/00Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/66Regeneration of the filtering material or filter elements inside the filter
    • B01D46/70Regeneration of the filtering material or filter elements inside the filter by acting counter-currently on the filtering surface, e.g. by flushing on the non-cake side of the filter
    • B01D46/71Regeneration of the filtering material or filter elements inside the filter by acting counter-currently on the filtering surface, e.g. by flushing on the non-cake side of the filter with pressurised gas, e.g. pulsed air

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)

Description

Hierzu 1 Blatt Zeichnungen1 sheet of drawings

Claims (1)

Patentanspruch:Claim: Verfahren zur Gasreinigung hinter Kesselanlagen für fossile Brennstoffe mittels Gewebefilter, welche mitteis DruckJuftstoß abgereinigt werden, dadurch gekennzeichnet, daß gleichzeitig mit dem Druckluftstoß zur Abreinigung der Gewebefilter (3) ein Druckluftstoß in das Verbindungsrohr (2) zwischen Kessel (1) und Gewebefilter (3) gegeben wird, der den Druckluftstoß aus dem Gewebefilter (3) kompensiertProcess for gas cleaning behind boiler systems for fossil fuels by means of fabric filters, which be cleaned by means of a pressure surge, thereby characterized in that at the same time as the blast of compressed air to clean the fabric filter (3) a blast of compressed air is placed in the connecting pipe (2) between the boiler (1) and fabric filter (3) which compensates the blast of compressed air from the fabric filter (3) Die Erfindung betrifft ein Verfahren zur Gasreinigung hinter Kesselanlagen mittels Gewebefilter, welche mittels Druckluftstoß abgereinigt werden.The invention relates to a method for gas cleaning behind boiler systems by means of fabric filters, which can be cleaned by means of a blast of compressed air. Es ist bekannt Kesselanlagen, die öl oder Kohle verbrennen, mit Rauchgasreinigungen auszurüsten. In diesem Zusammenhang ist es bekannt, hinter den Kesseln Gewebefilter anzubringen, die mit Kalkstaub beschickt werden, so daß SO2 aus dem Abgas über den Kalkstaub absorbiert wird. Da sich im Laufe des Betriebes auf und teilweise im Gewebe Staub ansammelt, steigt der Druckverlust an den Gewebefiltern an, so daß diese eine periodische Reinigung durch örtliches Ausblasen oder Rütteln erfahren (Chemiker-Zeitung, 95. Jahrgang (197I)1Nr. 10,Seite443).It is known to equip boiler systems that burn oil or coal with flue gas cleaning. In this connection, it is known to install fabric filters behind the boilers, which are charged with lime dust, so that SO2 from the exhaust gas is absorbed by the lime dust. Since dust collects on and partly in the fabric during operation, the pressure loss on the fabric filters increases so that they are periodically cleaned by blowing them out or shaking them (Chemiker-Zeitung, 95th year (197I) 1 No. 10, Page443). Für diesen Zwf:k finden vielfach Filterreinigungen Verwendung, welche mittels Druckluftstoß die Filter reinigen. Bei diesen bekannten Filtt-, reinigungen hat es sich als nachteilig erwiesen, da3 durch den plötzlich einsetzenden Druckluftstoß ein Rückstc-/ von den Gewebefiltern in den Kessel erzeugt wird, welcher in dem Kessel vielfach zu kleinen Pufferstößen führt.Filter cleanings are often found for this Zwf: k Use, which clean the filters by means of a blast of compressed air. With these well-known filter cleanings it has proved to be disadvantageous because of the sudden onset of A blast of compressed air is generated by the fabric filters in the boiler, which is in the The boiler often leads to small buffer surges. Durch die DE-OS 27 29 298 ist ein Verfahren sowie eine Vorrichtung zur Trockenabsorption von SO2, HCl, HF und NOx durch eine Zwei-Stufen-Filtertechnik bekannt. Bei dieser findet eine Düsenanordnung Verwendung, mit welcher Kalk in die Rohgaszuleitung zur ersten Filterstufe eingeblasen wird. Da der Kalk in Abhängigkeit vom Reingaswert sukzessiv dem Filter zugeführt wird, kann dieser einem durch einen Druckstoß bei der Abreinigung der Gewebefilter hervorgerufenen Rückstoß nicht entgegenwirken, da die Abreinigung der Filterschläuche in Abhängigkeit vom aufgebauten Druckverlust durchgeführt wird. Aber selbst dann, wenn die Kalkeinblasung sich während der Abreinigung im Betrieb befindet, ist diese nicht in der Lage, dem auftretenden Rückstoß entgegenzuwirken, weil die Einblasung des Kalkes mit möglichst geringem Druckverlust erfolgt.From DE-OS 27 29 298 a method and a device for dry absorption of SO2, HCl, HF and NO x by a two-stage filter technology is known. This uses a nozzle arrangement with which lime is blown into the raw gas feed line to the first filter stage. Since the lime is gradually fed to the filter depending on the clean gas value, it cannot counteract a recoil caused by a pressure surge when cleaning the fabric filter, since the cleaning of the filter bags is carried out depending on the pressure loss that has built up. But even if the lime injection is in operation during cleaning, it is not able to counteract the recoil that occurs because the lime is blown in with the lowest possible pressure loss. Von diesem Stand der Technik ausgehend liegt der Erfindung die Aufgabe zugrunde, ein Verfahren der eingangsgenannten Art zu schaffen, mit dem es unter Vermeidung vorerwähnter Nachteile möglich ist, beim Abreinigen von Gewebefiltern mittels Druckluftstoß einen Rückstoß aus den Gewebefiltern in den Kessel zu verhindern. Proceeding from this prior art, the object of the invention is to provide a method of the type mentioned at the beginning To create a way with which it is possible while avoiding the disadvantages mentioned above, when cleaning of fabric filters to prevent recoil from the fabric filters into the boiler by means of a blast of compressed air. Erfindungsgemäß wird dies dadurch erreicht, daß gleichzeitig mit dem Druckluftstoß zur Abreinigung der Gewebefilter (3) ein Druckluftstoß in das Verbindungsrohr (2) zwischen Kessel (1) und Gewebefilter (3) gegeben wird, der den Druckluftstoß aus dem Gewebefilter (3) kompensiert.According to the invention this is achieved in that at the same time with the blast of compressed air to clean the Fabric filter (3) a blast of compressed air is given into the connecting pipe (2) between the boiler (1) and the fabric filter (3) which compensates the blast of compressed air from the fabric filter (3). Die Erfindung ist an Hand der Zeichnung erläutert.The invention is explained with reference to the drawing. Mit 1 ist der Verbrennungskessel bezeichnet, aus dem die Rauchgase über das Verbindungsrohr 2 in den Gewebefilter 3 eintreten. Der Gewebefilter 3 kann auch mit einem vorgesetzten Chemisorptionsreaktor ausgerüstet sein. Die gereinigten Abgase werden mittels des Ventilators 4 dem Abgaskamin 5 zugeführt .1 with the combustion boiler is referred to, from the the flue gases enter the fabric filter 3 via the connecting pipe 2. The fabric filter 3 can also be equipped with an upstream chemisorption reactor. The cleaned exhaust gases are by means of the Fan 4 is fed to the exhaust chimney 5. In dem Verbindungsrohr 2 zwischen dem Kessel 1 und dem Gewebefilter 3 ist eine Düse 6 angeordnet, über die gleichzeitig mit dem Druckstoß zum Reiiigen des Gewebefilters 3 ain Druckluftstoß in das Verbindungsrohr 2 in Richtung auf den Gewebefilter 3 gegeben wird, durch den der aus dem Gewebefilter 3 herrührende Rückstoß kompensiert ist so daß Verpuffungsstöße im Kessel 1 nicht mehr auftreten können.A nozzle 6 is arranged in the connecting pipe 2 between the boiler 1 and the fabric filter 3, Via the compressed air blast into the connecting pipe at the same time as the pressure surge to clean the fabric filter 3 2 is given in the direction of the fabric filter 3, through which the resulting from the fabric filter 3 Recoil is compensated so that deflagration surges in boiler 1 can no longer occur.
DE3310047A 1983-03-19 1983-03-19 Process for gas cleaning behind boiler systems for fossil fuels using fabric filters Expired DE3310047C2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE3310047A DE3310047C2 (en) 1983-03-19 1983-03-19 Process for gas cleaning behind boiler systems for fossil fuels using fabric filters

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE3310047A DE3310047C2 (en) 1983-03-19 1983-03-19 Process for gas cleaning behind boiler systems for fossil fuels using fabric filters

Publications (2)

Publication Number Publication Date
DE3310047A1 DE3310047A1 (en) 1984-09-27
DE3310047C2 true DE3310047C2 (en) 1985-07-25

Family

ID=6194076

Family Applications (1)

Application Number Title Priority Date Filing Date
DE3310047A Expired DE3310047C2 (en) 1983-03-19 1983-03-19 Process for gas cleaning behind boiler systems for fossil fuels using fabric filters

Country Status (1)

Country Link
DE (1) DE3310047C2 (en)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2729298A1 (en) * 1977-06-29 1979-01-11 Heinz Hoelter Dry absorption of acid gases with lime using two=stage filter - with oxidn. of sulphur di:oxide by nitrous gas in first stage and absorption on fresh lime in second
DE2831167A1 (en) * 1978-07-15 1980-06-12 Ceag Filter Entstaubung Dust filter separator - with backflushing control unit closing clean gas duct valve and producing compressed air pulses in filter bags
DE2935464C2 (en) * 1979-09-01 1987-05-07 Heinz Dipl.-Ing. 4390 Gladbeck Hölter Process for dry chemisorption in filter separators

Also Published As

Publication number Publication date
DE3310047A1 (en) 1984-09-27

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Legal Events

Date Code Title Description
OM8 Search report available as to paragraph 43 lit. 1 sentence 1 patent law
OP8 Request for examination as to paragraph 44 patent law
D2 Grant after examination
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee