DD259686B5 - DEVICE FOR DETERMINING THE CORROSION DISTRIBUTION DISPERSER FABRIC SYSTEMS - Google Patents

Description

Hiorzu 1 page drawing

Field of application for Erlindunu

The invention relates to oino apparatus for determining the particle size distribution dlsporsor Stof fsystemo, for the application for Oourtoilung the effectiveness sowio for controlling the operation tochnischor facilities in donon said material systems in flowing Gason clisporgiort vorkommon, sowio for carrying out Korngrößenonanalyson of present as Haufwork granular materials in Laboratory, after your Rodisporgicrung in olnor goolgnoton Oisporgiorvorrichtung.

Characteristic of the bokannton tochnlschon solution

In order to determine the particle size distribution of disperson Stoffersonon, which is dispordated in Strömondon Gason, apparatuses are often used, which are based on the principle of current classification Arboiton. These are distinguished from other devices for in situ grain size analysis, such. B. optic Partikclzählgoräten, by their robustness, an uncomplicated structure and by din oinfacho evaluation.

Common devices for determining dor grain size distribution by dom principle of current classification are cascade impactors and cyclone mohrstufigo (Murphy, CH: Handbook of Particle Sampling and Analysis Methods 198 '.) Was present Chemie International, Inc., Deorficld ßoach).

Erstero are hardly suitable for discharges in gas streams with high concontration of the dispersing substances, since they generally carry only a small amount of staged tungsten, which leads to a considerable shortening of the measuring time and therefore makes it almost impossible to obtain representative values of operating conditions at the mill. In addition, these devices only allow particle size analyzes in the foinon to medium particle size range. Korngrößenonanalyiongeräto who ruminated on the principle dor stream classification by means of centrifugal forces have, in the form of two or more series-connected centrifugal separator same odor different design and / odor-size, with subsequent absolute filter found widespread. These devices are characterized, as compared to cascade impactors, by the possibility of higher Stufenbcladungon and thus enable use even at höhoron concentrations of dispergiorton substances.

A device for in situ grain size analysis is known, in which the dispersed solid particles containing gas stream is passed through two successive analysis Zyklone the same odor different size and by a subsequent absolute filter (DE-OS 1598009) Here, however, the type of grain size distribution function of

-2- 259 086

annlyslorondon dlsporson Stoffystoms boknnnl soln, what bo! dor Violzahl dor, ζ. D. In lllustrustrollon productoneprozoeson, arising disperse Stolfo sowlo bol dor Vlolfnlt your Entlohungsbodlngungon, now (Ionon ritclit without woltoros conclusions on doit type of Korngiößonvortollung gozoyon worduii könnon, yodach not presupposed wordon can.) Since tliü paramotor jndor bollobl () on zwolparamotrlgon distribution function olndou (l (j g (lon gomossonon goszytnbschoidogradon dor Tronnstufon, in connection with lliron boktinnton abdomen chaplain, bostlmmon lesson, knnn wodor olno Aussago upper (lon type dor particle size distribution, nor above that occurred anolysone foal (jomnclit wordon.) Untor dioson Umsttindon 1st dlo chaplain of Fohlanalyson rnlntlv high.

Known are arrangements of drol and mohr In Rollio goschnltoton Fllohkraftabscholclorstufon glolchor odor untorschlodlkhor üaufltt and untorschloc'lichor üougrößo with nochfolgondom Absolutfiltor. Because of the high grading of the flolhkraftobscholdorn in BaugrÖIJon, vvlo olo (for Anolysonzwocko application tlndon, llofom dloso devices, although usable results for dlsporso Stoffsystomo In folnon to mlttloron Korngrößonborolch, gostatton jodoch only unzurolchondo information about: lon lead particle size distribution in Qrobkornborolch.

For the elimination of the dinosaurs of the night, use is made of the pre-colordor for grosslsporso Ptirlikolfraktlonon, but still the principle of Trügholt's nrboiton (SU 523334), Dioso Tronnstufon woison jodoch orgungsgomüß in the Grobkornborolch olno rolotiv gorlngo Tronnschdrfo iiuf, whereby the Anolyson's ororah is raised. It should also be noted that in Eliuutz dorartlgor Tronnstufonkomblnationon for the grenboron matter systemon the grain-size analysis was already accounted for in English (London), but in London only fl oatlv goringo masses dor. Abgoschlodonon Gutos nachvolson In cllosom TaIIo bringon dlo lotzton Tronnstufon dor measure koino wosontlichon Information about dio particle size distribution mohr, sotulorn vorfälschon even the Analysonorgebnis by relatively strongo Wondanstitzo int Foinkornborolch.So orfordorn dahor oinon ungorochtfortlgt hohon effort bol dor Ausortung clorAnolyson.

ZioI dor invention

Aim of the Invention It is too feasible to carry out the comonomeranalysis of substance systomon disperse in the gas stream of onthaltonon for oino violin of different materials, with hoog Gonauigkolt and vorgloichswoiso goringom labor.

Presentation of Woson's invention

The invention is based on the object of providing an apparatus for determining the particle size distribution of substance systomon dispersed in flowing gasontron tonone, the geoignoto constructive configuration and the realization of different measuring arrangements according to the prior art truncation of a basic arrangement, results with high accuracy in oinom broad grain size borcich liofort.

The object is achieved erfindungsgomaß in that in a at least vior successively geschaltoten separation stages and a subsequent absolute filter bostehendon measuring arrangement as crsto Trennstufo a novel Stromkiassierer that causes by its constructive Gostaltung oino combined deflection and Zontrifugalabscheidung used. This invention first Stufo the Grundmoßanordnung the device bostoht from oinem cylindrical coat with a downwardly adjoining konlschon Toil, which empties into a dust container, and with oinom immediately below an annular docking ice, which closes the mantle space obon, tangentially mounted outlet channel, and from a coaxially arranged, piercing the lid and projecting into the Mantolraum tube, wolciies closed at the upper end and is provided with oinom tangentially mounted inlet channel.

Due to the design described above, in the diosor stage, ozone coating with dusting in the coarse grain borolch is realized, wherein the additional occurrence of centrifugal forces of gogon boron, usually in the coarse grain region separating deflectors, advantageously causes a steeper course of the fractional scaling curve.

The second separation stage is followed by a centrifugal separator known per se without reversal of flow and, as further separation stages, centrifugal separators known per se with flow circulation, in decreasing sizes.

To connect the first Tronnstufo with Moßloitung and the Trennstufon among themselves kommon advantageous rectangular channels used.

As a result, compared to Gaskanälon with equal, round cross-sectional area, a homogenization of the inflow and outflow conditions for the individual Volumenelemento dos flowing gas is achieved with each other.

The transitions from the circular cross sections of the outflow channels, counted in the flow direction, second to penultimate separation stage of Grundmeßanordnung on the rectangular channels are expediently as tangential, rectangular

Approaches of the rectangular channels to dio discharge channels with circular cross section executed. As a result, the residual spin of the respectively preceding separation stage which forms in the outflow channels and which negatively influences the flow in the respective subsequent separation stage is dissolved as far as possible.

Due to the different Abscheidemechanismon weison the separation stages with each other approximately the same size separation characteristics, which differ sufficiently from each other to capture the particle size distribution in a very wide range of sizes, including in the coarse grain Beroich.

The accuracy of particle size analyzes by means of multi-stage classifiers is, according to experience, particularly high when approximately mutually equal masses of the substance system to be analyzed are deposited in at least three separation stages. If this condition is fulfilled, a further increase in the number of separation stages no longer brings any significant improvement. This favorable mass distribution can be achieved in the device described in that initially in a preliminary test with the simultaneous use of all at least four stages of the Grundmeßanordnung, the mass distribution of the analyzed material system is determined on the individual separation stages.

On the basis of the results of the Vorvoreiiclios, the Troimstufon dor Qrundvoflanto, in addition to Woglaeeung oinor odor moluoror Tronnstufon, has been combined sooinandor that olno measurement arrangement with at least drol hlntorolnaiulor ongoordnoton Tronnstufon and oinotu nocligeschaltoton absolute valve arises, for which onalyalorondo material systom olno gutsiggo mass dissolution gowährlolstot,

Dio Reverse Chlorination is provided by detachable flanged connections in the Rochkockkanitlon, dio as supply line to the Tritonstufo orgasm, as well as by means of a pilot tube (Ion Tronnstufon dlonon, as well as by detachable flange connections with immersion tube and centrifugal separator with flow circulation.

Ausfillmmflsbolsplol

B'inExploratory Boosting Diameter Basic Measurement Arrangement of the Orgonomic Greater Grain Size Sonic Anorector is shown in FIG.

Dio measuring arrangement consists of vlor htoroinondor goschaltoton Tronnstufon (1, 2, 3, 4) with the connec - tion of the absolute filter (6).

The dispensable matter systom onthaltondo gas is absorbed by the ools Goblttsos (G) from the Ubor olno probe and transported through the measuring arrangement.

The oro disponioson of the gas is obtained from the tangential angoordnoton inlet (7) into the Zonaltral (8) olno Drollcompontonto, in the central tube (8), after a minor gorittotonic current is. At the exit (9) of the Zontrolrohros (8) in (lon Montolroum (10), wolchor by oinon 2yllndrischon Mantol (22) and by oinon to unton afterward konischon Mantol (23) is blinded by don Oockol (2't), os comes to oinor flow umlonkung and thus to the Abschoidung gröboror Partikoin In don Stoubbehällor

In the folgo the gas with dom in it unthaltonon disperse substance systom passes over the canal (13) In dio zwoito Tronnstufo (2).

Dioso is gobiidot by oinon Zontrifugalabschoidor without flow reversal. The gos with the onthaitonone toilchon dos disperse material systom flows tangentially into the septum, in which the whirling fluid is formed, and the tronstufo passes through the central angoordnoto outlet (25). Dio Stufon (3) and (4) are Kloinzyklono with different dimensions, with abnohmondon in the flow Baugrößon.

The supply line to the measuring arrangement (12) as well as the opening slit (13, 14, 15) between the two stages (1,2,3, Ί) are designed as Rochtockkonälo. Dio Vorbindungskanälo (14,15) between the second and the third sowio between the third and the fourth Tronnstufo connected tangentially to the Abstrt, nrohr (25) of the second Tronnstufo or to the dip tube (26) of the third Tronnstufo.

The outflow from the entire measuring arrangement takes place through the dip tube (27) of the fourth Tronnstufo.

For the realization of different combinations of stages, it is possible to use the tube flange (16, 17, 18, 19) or doi tube flanges (20, 21) on the outside by means of the tube flange (20, 21).

Claims (4)

-I- 259 606 Pntontonaprücho: 1. Apparatus for the determination of the particle size distribution dlsporsor substance systomo mlttols olnor Moss olnor direction, in clor mohroro different Tronnutufon, cliu ou (dor Grundlago clor current classification οι botton, as well as oln connecting delta absolute valve hlntorolnnndor goschaltot and clio basic moss arrangement as orsto Tronnstufo olnon current classloror (1), as zwolto Tionnstufo olnon Centrifugal separator without flow circling (2) and as woltoro Tronnstufon mlndostone zwül Zontrlfugalabscholdor with Strömungsumkohr (3,4), In decreasing ßaugrößon, bolnhaltot, gokonnzolchnot through, the clor Stromorlorloror dor orston Tronnstufo dor Grundmoßanordnung ous olnom cylindrical mantle (22) with olnom itself Toll (23), wolchos In olnon Stoubsammolboh iltor (11) orifice, and with oinom immediately below olnos kroisringförmigon Dockols (24), dordon mantol space (10) closes to obon, tangontial angobrachton outlet channel (13), sowio from oin om coaxial angoordnoton, clon Dockol (24) piercing London and In clon Mantol room hlnolnragondon tube (8), wolchos oboron endo goschlosson and with oinom tongontial angobrachton inlet channel (7) vorsohon is, is constructed. 2. Device according to claim 1, gokonnzolchnot characterized in that clio Vorbindungsloitungon of dor Moßloitung to orston Tronnstufo (12) and dip Vorbindungsloitungon between clon Tronnstufon (13, 14.1 (5) are exhausted as Rochtockkanälo. 3. Device according to clon claims 1 and 2, characterized by, i \ afh the Üborgänge of the Krolsquorschnitten dor Abströmkanal, counted in the flow direction, second to penultimate Tronnstufo the Grundmoßanordnung on clio Rochtockkanälo as tangential ©, right-angled approaches Rochteckkanälo (14,1Ö ) are executed to the outflow channels with Kroisquerschnitt (25,26). 4. Device according to clon claims 1 to 3, characterized in that the Röchckkanal (12) between clor Moßloitung and clor orston Tronnstufo (1) dor Grundmoßanordnung and the Rochtockkanälo (13,14,15) zwisuhon clon oinzolnon Tronnstufon (1,2, 3,4) of the Grundmoßanordnung with a lösbaron.Rockockflanschdß, 17,18,19) are equipped and that in the Tauchrohron (26,27) of the centrifugal force with centrifugal inversion (3,4) per a detachable pipe flange (20,21) bofindot.