DE1673231A1 - Device for determining the moisture content of adsorptive air drying devices, in particular gel dryers - Google Patents

Description

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United Austrian BiaeB * uii ^ Stahlwerke Aktiengesellgcjtia.f1 ₁ % lnz

Provision for determining the load status with ^ eucibility of adsorptive air-drying facilities, in particular

The original finding refers in general to the dynamic drying of grass, especially air in gel drying. The mode of action of the gel dryers is based on the gel strength of "adsorbing water * Greltrookner, which are used for industrial air drying". en mgiiat Wit av / ei in the gel (silica gel © der AlttgeX) provided ildsor "laern, which are driven in such a way that one adsorber operated in the Erookner", to the extent that the gel contained in it is capable adsorbed, stands, but the other is regenerated · lis is necessary to take care " _f . that the adsorbers that are in operation open in good time "

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Unterüaaer * «Art. ? 11 AN «a m% Sat« ad «8 Change« «··. **>«> ΐ967ί g _A o oRi'Q'HAL

1873231

Regenerate and the still in the Begener & tiona ^ upright adsorber is switched to Trogkner operation as soon as it is in operation standing adsorber has reached a state in which it no longer adsorbs moisture and thus the drying effect ceases. So far it is common Control devices controlled by time switches to be provided, but with appropriate safety » heitsgrensen have to work, which is why mostly the switchover to generator mode takes place before the adsorber that was in operation until then has reached its degree of saturation. It is here also common, the regeneration operation during the entire. To maintain operations »see what represents an unnecessary effort, since the regeneration mostly; is much faster than loading takes place. In addition, this goes cyclic switching independent of the control ^ State of charge, as you can see from the respective,! By « set amount and - the! moisture content of the supplied Air results in front of you. ;

Experience has shown that it is with! usual methods it is only possible to change the loading condition of a (jelbettes, especially with large i | j £ ttrQckern for? Sweeping industries. Ee θ4 | μ1 blue Sel cartridges known ι whose iarbtuäsehla ^ from blue to white indicates the presence of lucrity, but these cartridges do not allow a subjective over « check the Belapbojgsstatuses and deliver no exact Measured variables ItJr an objective date of the state 5 | B. from a learning control Bpfc # U ^,

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efficiency methods based on pressure or volume. Changes in moisture removal are only provided for large ones Moisture output levels reasonably useful aeßwerte * By determining the dew point can you can do it even with a lower moisture content carry out reasonably accurate measurements »but measuring devices built on this basis work, mostly after the Teiletroraprineip and sinü essentially only for laboratory purposes and for short-term Measurements, but not for measurements in industrial Suitable for continuous operation. Others after the leilstroiapriri & ip working Keßgeräte work according to hygroscope ^. see or psychological Hess proceedings; other devices beetimaen the load level based on the capacity or the electrolytic effect. Because of work in the part Ptronv it often comes from Pehlmesseii, so there is an industrial builder use of such heating devices icaua appears full,

For determination of the moisture content 8 it is hotter when the! l'feupunktincithodc known to use YielXaali-SPheri-ioelements »u at de eu the one point of contact in a gas line protrudes «but the other group of solder joints into a yes By Gtiindi £? en WaeeerEüfluss moist gelled porus Tonkärper xuiter brought let * From the difference of · Gas temperature and temperature at the feuoht kept Soldering spots let sioh the relative moisture content determine the gas.

The invention relates in particular to one Device for determining the loading condition with ity of cieorptive air drying devices, in particular Geltroclmeni and consists essentially in the fact that the sea temperature of the sea through the

009849/0660

Dryer. Led gas (air or energy gas), one or more pairs of thermocouples are provided, one or more of which thermocouple before or after the dryer, but that others after, in or before the dryer. Dryer, in the case of several pairs, preferably while observing a breakdown message of the elements belonging to the following pairs and - with the sleoeiiie - of a pair raiter - over a tension-sensitive (member, z ... 3, a tension-sensitive, the üiiigangsstufe a 7-Ersti TrkerB * Bind or the like connected in reverse circuit ^ so that the iemperaturdifferBiizeii occurring at the ile: be aenten each pair propox'tionalen SpannungsdiiXereiajzen üur ..iizeige brought respectively, for the control of signal generators or expensive equipment used lioimrn »2JA it Sicli usually only vm small TeTiiperaturunterschiede is, it is advantageous to form the elements of each ^r ihenrtoelecientpaareß as Vielfachjelcinente,

The invention utilizes .the physical Satsache that gels lce.lt in the adsorption of Feiichtig-, * ärrac- .. Add / Slee This AdBorptionsv, AEIC TMR commercially available gel "about 685 cai / g adsorbed Yaseer beträgt-, ifötrt to he ^ lriaung the dried Iiuft _f nut Thus when the gas temperature frocknerbefrieb Mnter the Trouknungszone larger than its prior to entry into the Srotil3iungBzone. Ber yorgeng is reversible, which means that a gel dryer removes the heat of sorption from the energy-generating gas during the generation, so that the gas is in front of the zone of the iroclaaers, which is rising in the generation, and is therefore at a footstep "Besteut be-iia! Pro eknerbetrieb zwisdien 33ln- and exit keiiie ieraperatiirdiffereiiz, co Is uer afeöcfcaer fully loaded with moisture. When Begenerleroetrleb same Tem means he $ & .- ture at the inlet and -lustrltt a vollige Eegenerätiom * 1st The erflnduagBgeiaafieii IToirrlchtung "omit a

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simple and operationally reliable monitoring of the loading edge is also possible with continuous industrial operation. Ilan, with the "device not only in! '' Ernsteuerweg detectable, relatively accurate measurement variables. Obtain an objective evaluation, but you can see the variables ^c directly or indirectly to control dee operation use a Lufttroclmungsanlage. In a system with two or Several dryers can be used to control the gas flow from one dryer to the other via the control devices and this reversal can only be carried out when the dryer that has been in operation is saturated with moisture or has been fully regenerated interrupt the regeneration gas as soon as full regeneration is achieved, which results in a significant energy saving compared to the previous mode of operation, since the Ileganerierbetrieb usually only requires a fraction of the time that a liammer or the like. is in! Prockner operation, but it was customary up to now to carry out the puegenerating operation over the same: periods of time as the dryer operation.

In the drawings is; exemplifies the subject matter of the invention. Show it: ; 3pig. 1 shows the basic arrangement of a device according to the invention on a} gel dryer in pure! | chera ± ical representation, j! 'ig. 2 4 Scheme ^as a means for visualizing

the loading condition of a dryer and Pig. 3 a control device for automatic reversing of the two chambers of a dryer from dryer to Hegenexierbetrieb.

In Pig. 1 became a dryer at Trooknerbetrieb sohematically indicated. Those with a gel ber- ' so-coated trackner chamber 1 has a connection, 2

for an air supply line and a connection 3 for discharging the dried air. When operating ·· * ' * ^: s , the; Drying takes place, this zone migrating from inlet 2 to outlet 3 ^ as the loading of the dryer progresses. In Pig, 1 a zone 4 has been indicated by hatching, which lies approximately in the middle of the dryer, which means that the dryer is about half full in the illustration shown in full. If you insert the * \ & t b for the width of the drying ^{zone and the r} .fac ± a for the distance between its bintering end, then it follows that, as soon as the value a reaches the amount al, that of the length of the chamber 1 minus "b "corresponds to the dryer 1 has reached a state in which it is fully loaded in a very short time. As can be seen, one element 5 is arranged in the inlet connection 2 and the second element 6 of a thermocouple pair is arranged in the outlet end region of the chamber 1, which elements are connected to one another via lines 7, 8, with a voltage-dependent element in line 8, ζ · Β. eiÄ tension meter 9 is located. ",

The temperatures are indicated to the right of the schematic representation. In the inlet area, that is to say in _{FIG. 2, the gas has a temperature t E} , which in the area of the adsorption zone 4 rises approximately according to the Kuirye 10 shown by the value dt to the value t ^. That

placed that ", door rise by dt ¹ " atjtf t " ¹ takes place. As can be seen, the element 6 is arranged approximately half the width of the zone 4 from the outlet 3, so that when the temperature t ^ 'occurs at the outlet 6 dii Adiorptioniiähigkeit des Trookni || s .1 Praktiaoli erscnöp.ti; 'Jtei · Pieser SSuetanä -

The tension-sensitive member 9 will look like this already appealing if only a tempera

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in which the zone 4 'reaches the end of the irocimerc on the exit side, is indicated in 1 by dash-dotted lines and in the i: urvendars division by the iZurve TO ¹ also indicated by dash-dotted lines.

In the case of hesitation, the same Yorgilnge occur with the reversed foreground, because? In the case of one of the words enteprecJieiidexi f Temperaturangenoinraen it can be seen that, in the case of the Sufiilxrmiii He ^ eneratioiiBßaseB freely follows 2 eJc, in the measure t.

and at 6 the temperature has dropped to t * ', the ^f j? roci; ner is fully regenerated, the values t. UBW ^ for the lay eratioiiabbetrieb brauclien Eelbstver- · etHndlion .not show the same appearance in the dryer operation. ·

In the AueÄnrung of FIG. 2 are included in the A · "let 2 arranged a tTrockenkannaer 1 Strieder Slierinoeleraente 5, the Rait aistandeweiße in the Ivammer aiige-'Gröneten Sleiaenten 6, Ca form ₁ Gb ^ lierraoelcnenlipaare, eo AEAs at bp £ £ en umuiißfiabhangi Glietlern 9t9a "? B ^ in the event of a teraperature differentiating fien ae Baaree iteutrEpanaungen get inside., Which are led via lines 11,1t ·, 111) TerBtHrkerii or Hegeliclituiiien 12,, i2b"". Biese amplifier- hzw, he-

can, for example, during the temperature differences in the ssugehwrieen JSleiaentpäar liaiapen 13,15a, 13b eijiee blind circuit diagram B. «Inßeechaltrt halt» n, tein sinking b »w. Stop the $ egg perature different from «r the JEU ^ owed iaiapen ^ so that then, irenn definite jLaEipen göiSaclit «Ind, the blind picture 14 shows the full load of the Ksismer 1 anaelgt.

At the ÄUBftÜirung after Tig. 3 has a lift system with ε we 1 chambers 1,1a. The inlets 2 _t 2 "ttnd Hie outlets 3,3a» ind with ewei

009849/0660 bathroom

Vierweghtthnen or the like. 15 »16 connected, to which an air duct M for the Peuohtlufti a supply line 1Θ for a heating gas, a discharge line 19 for door air and an outlet line 20 are connected to the air supply system, in the following illustration JMi position of the animal faucets 16.15 is the adsorber 1 at the regeneration operation, the

Atiorber 2 but in the ffitfüdknerbitritbi the each adsorber

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Ordered Xheraoeli ^ dpaires with their tension- • jqpfindllohen Olieätrn 9 en ßsteuerlelungen 21 are attached to the feltaentpatr of the adsorber 1a the dt ¹ proportionally · Öpaammdifferenz occurs, this is transferred via a Umohilter 22 to a desire 23 »of a motor or the like. 24, so that it turns the switch 22 and the Vitrweghlhne 15 "I" by a quarter turn close to the right via a wave «EJ, so that you are now connected to the tension-dependent tflied of the adsorber unit and connected via the Four wifhÄiine the adsorber is switched to Irookner operation, but the ▲ isorber 1a is switched to Rtgenirierbetrieb.

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Claims (2)

Claimsι 1. Device for determining the loading tobtandea with moisture from aisorptlven air drying devices, in particular GteHwqöknera, thereby characterizedι that for measuring the temperature through the.! dryer. (t »1e) guided hall (air resp. Generator gas) one or more Thermötleoient pairs (5-6,5-6a, 5-6b) provided bind, from dec * bew. Those the one thermocouple in front of or * near the dryer, the other, however, after, in or before the ₍ lyookn «r (1, Ia) ₁ in the case of several pairs, preferably uifieir adherence to one, U) would be in the flow of the elements belonging to the following pairs and where the 31 elements of a Paaljes among others about "an apannunsensitive aiied (9,9 * ^ 9b) _t aB, a tension ame" der Bingangsaiüi · eitee, Yerstärkerβ (12,12a ,, 12b) oa, d | l, in Gegeniohaltun ^ yerljijmden, are, so that the emerging T # iliperä "luifdiffe, renaen on the elements of each pair pro] iört ^ a ^ 3, en flfaÄngadifferenzen brought to aneei ^ e due to the warning -of signal transmitters (I3,1? a, 13b ^?!) "You dei ¹ Uereinrichtungen will come (23,24) used, '* *' -., 2. J Vorrloh- | ung naoh Anflpru ^ h 1 ₍ characterized by the fact that the elements "each f ^ ieriao element pairs as a multiple element * * ~ ' rf it - * 9 U 009943/0680 New lower lapon ^ m% \ _BATH