DD290593A5 - METHOD AND APPARATUS FOR MECHANIZED INPUT OF CAPILLARY MEMBRANE BOWLS IN APPARATUS FOR SEPARATING COMPONENTS OF LIQUID SOLUTIONS AND GAS MIXTURES DURING THEIR PREPARATION - Google Patents

Abstract

The invention relates to methods and apparatus for the mechanized immersion of capillary membrane bundles in apparatuses for the separation of components of liquid solutions and gas mixtures during their manufacture, which consists in mounting the resin in the required volume in the module housing interlocked in a device designed for this purpose of appropriate quality in the resin receiving chambers is poured over the Modulgehaeusen flexibly connected Gieszrohre, after which the rotating frame of the device is rotated around the axis "Y" with a centripetal acceleration of 10 g to 100 g / g9.81 m / sec2 /, and while having a number of revolutions corresponding to the quality characteristic of the resin, so that the cutting plane "V" falls between the resin inclusions in the defective and flawless fibers, after which the revolving frame is kept in rotational motion at a constant angular velocity, for 10 to 30% of the polymerisation nszeit of the resin, and after the completion of the process, the device turned off, the Gieszrohre are exchanged on the Modulgehaeusen, last Gieszverfahren is repeated. The method is implemented by means of a device having a rotating frame * stub (14; 15) for the supply and removal of the cooling air, the resin accommodating chambers (8) and a variable speed motor, the chambers (8). via flexible Gieszrohre (10) with the Anschluszrohrstutzen (2) of the Modulgehaeuse (1) are connected {Kapillarmembranbuendeleinbau; cameras; Component separation; Solutions; Gas mixtures}

Description

For this 4 pages drawings

Field of application of the invention

The invention relates to a method and a device for installing filter membrane bundles in apparatuses used for the separation of components and gas mixtures during their production.

Characteristic of the known state of the art To separate the components of liquid solutions or gas mixtures - for concentration, treatment, etc. - be in

a capillary arranged Kapillarmembrane used, which expediently based on the

Ultrasonic filtration, microfiltration, dialysis, gas diffusion or reverse osmosis work. In designing a useful filter module, the most significant problem to be solved is how to

the capillary membrane bundles in the Apparaigehäuse, enclosed in the filter module housing, mounted in the housing and can be suitably sealed.

In general, the membrane bundle is secured in the filter housing with any synthetic resin. In the itself

With the design and construction of the filter modules employing patents, it is merely mentioned that the specially designed and arranged membrane bundles with synthetic resin poured out in the module housing be attached. The

Way of pouring are not detailed.

U.S. Patent No. 4,005,667 discloses an ultrafilter apparatus consisting of a module in which hollow fibers with semipermeable wall are arranged approximately parallel and resulting in a bundle which is secured to the mold material poured into the module.

The OE-OS 2 236 226 refers to the production of asymmetric membranes in a capillary form and their application in ultrafiltration. For the purposes of the description, the continuously produced capillary membranes can be cut to the desired length, i. H. On 10-100cm, Maßgoschnitten be, after which 100-5000 pieces are combined into a bundle and installed in a convenient housing. At both ends, the capillary membranes are glued with epoxy resin or other adhesive.

In EP-PS 0062086 the attachment of the filter elements is described in that liquid, hardening resin is poured into the module housing to produce a Gußblocks, which binds to the sheath and the tubular filter elements attached to the end of the module housing.

EP-PS 0170354 specifies a membrane separator consisting of the following parts:

a cylindrical sleeve, a bundle of parallel tubular or capillary membranes, the ends of the membranes being held by a molded-in resin mass secured within the capsule. As can be clearly seen from the above, the method patents used to install the module housing do not deal at all with the method and means of casting.

Object of the invention

The invention provides a method and a) means for mounting of the filter membrane bundles in z'ir separation of components of liquid solutions and gas mixtures serving apparatus is provided during the manufacture thereof.

Explanation of the essence of the invention The present invention is based on the object, one for various apparatuses for the separation of components

liquid solutions and gas mixtures are used, suitable method and apparatus for installation of

To provide filter membrane bundles. Accordingly, the present invention relates to a casting method and to the associated mechanical device,

with the aid of their during the production of verechiedenerweise configured, capillary membranes containing apparatus - conveniently filter module - for the separation of the components of liquid solutions and

Gas mixtures is suitable, the enclosure of the capillary membrane bundles in the apparatus housing, in the housing of the Filter module - compared with the previous methods - can be solved advantageously, further in the course dos Casting the faulty Membrdnfasern can be clearly separated from the flawless. In the course of the preparation of the previously known apparatuses was pouring the fixing resin on a

Manufakturalen (manual, difficult) procedures, in the course of which the principle of the communicating vessels has been exploited, in addition, the process claimed a casting resin with special parameters.

The advantage of the method according to the invention is that it in the production of any apparatus with Capillary membrane, regardless of the arrangement of the side nozzles and the design, can be used

for pouring the casting resin, a centripetal force of various sizes belonging to the interval of 10 g to 100 g is used.

The other advantage of the method is that in the course of the resin molding and fastening by means of the centripetal Force in the faulty holey or in the flawless membrane fibers the fixing resin serving up to

ascending different heights. Now, when the final module length is designed when cutting off the resin cap, the defective capillary membranes are already closed, since in these tubes the rise of the resin is greater than in the flawless fibers.

embodiments The invention will be explained in more detail with reference to the accompanying drawings.

As it is in £ lg. 1, a membrane bundle 3 is inserted into the module housing 1, whereby the resin used for fastening is mechanized via a connecting pipe 2, is cast at an angle α (α <90 °), whereby a resin body 4 is formed at both ends of the apparatus. The design of the resin body 4 takes place in two working steps and using two different resin qualities. The configured the resin body 4 of the "Y" axis limiting side includes with the longitudinal axis of the module housing 1 an angle α.

The mechanized casting is done in the apparatus of FIG. The device is a standing on feet 5, designed with a cylindrical jacket and sight glass provided centrifuge with lower shaft drive, with a aufschließbaren cover and with a Ant / iebsmotor β with stored rotor. In the rotating frame 7 (the centrifuge) are the differently designed, with respect to each other variably arranged apparatus, filter modules, also with variable numbers, one or both sides with nozzles, with the casting angle α (α s 90 ") is used Socket 14 for the supply of cooling air, or a nozzle 15 designed for the removal of air. The chambers 8, which are provided with specially designed dividing walls 9 and serve for resin storage, form organic parts of the rotary frame 7 into which the selected liquid fixing resin of corresponding volume is filled Now, while the device is being set in rotary motion, the fixing resin flows out of the chambers 8 via flexible pouring tubes 10 into the module housing 1, through the connecting pipe stubs 2.

In the arrangement of Figure 3, the resin on the connecting pipe 2 of the rims in the frame 7, at both Ends sealed module housing 1 entered in such a way by the still liquid synthetic resin in the

predetermined volume is filled in the resin-storing chambers 8 of Figure 2, wherein the resin is a plug for

Closure of the membrane bundle forms. The synthetic resin used is specially manufactured, it is fast-bonding and has a low Viscosity on. The resin-storing chambers 8 close flexible with the pouring tube 10 the connecting pipe 2 of the Module housing 1 on. After the resin is poured in, the rotating frame 7 of the device around with the "Y" axis

a centripetal acceleration of 10-100g (g = 9.81 m / sec ² ) brought into rotational motion. The setting of the

The number of revolutions depends on the density, the viscosity of the given fixing resin, the surface tension, of the Polymerization and polymerization of the resin from. This means that the above mentioned Parameters determine the corresponding number of revolutions. In the course of operation of the device, the fixing resin in the required amount is first supplied to the module case 1

fed and flows under the action of centripetal force between the fibers of the membrane bundle 3 and in the interior of the fibers. As is apparent from Fig. 7, the resin is filled in the mold 13 to the height "D"

FIG. 1 clearly shows that, in the case of defective fibers, the rise of the resin in the defective fibers is greater than

at the flawless fibers. For flawless fibers, the height of the rise of the resin corresponds to the height "D" of the resin level in the casting mold 13. In the case of defective fibers, the rise height increases by the distance "C". For flawless fibers holds the

Increase of the air pressure - caused by the bilateral resin flow - the inflow of the resin according to the principle

of the force balance back. In view of the fact that the membrane fibers can by no means be considered as a sealed pipe system, i. H. the system is porous, they are so to speak permeable to the gases, whereby the

Maintaining pressure can only be imagined for a shorter period of time, which is why it is essential to one

special synthetic fast-binding resin with low viscosity to use. With regard to the fact that the pressure-like

Counterforce of the resulting centripetal force in direct proportion to the viscosity or density of the resin and in

is a quadratic ratio with the number of revolutions, the optimum setting of the number of revolutions is the utmost

Importance. Faulty fibers - as we can not talk about air compression due to the free air leakage

(H = failure point) - the casting resin can freely enter the membrane fibers, up to the height "D + C.

Following the hardening of the first resin serving to form the stopper, in the second phase of the Harzeir jioßens

another type of resin is supplied at the discharge angle "α", which resin is no longer able to penetrate into the interior of the sealed membrane fibers, only flows in between the membrane fibers, whereby the resin body 4 comes to the complete pouring height "A". In the selection of the second type of resin, the most important aspect is that the space between the membrane fibers is filled free of air sacs, it should be completely against the wall of the

Module housing adhere, whereby the perfect seal can be achieved. An extremely important requirement is still to set the polymerization precisely or the Minimizing polymerization temperature so that the resulting heat of reaction, the material of the membrane

could not damage. For the purpose of adjusting the rate of polymerization, the selected resin is added

Inactivator added, the concentration of which changes depending on the type of membrane and the module. The dissipation of Heat of reaction depends as a result of the ventilation effect of the number of revolutions of the rotary arm, further at

Different module housings (eg polypropylene or stainless steel), the discharge also depends on the difference in the

Thermal conductivity from. Using the above-described operations becomes the one end of the arranged according to Figure 3 module housing

Subsequently, the arrangement of the module housings in the rotating frame of Fig. 4 is changed, after which the above-described two-step molding operation is repeated.

After hardening of the resin, the final design of the module housing 1 according to Figure 7 by cutting

along the cutting plane "V designed. The cutting plane "V" is chosen to fall to the middle of the section "C", thereby keeping the defective fibers closed.

The device according to the invention is also for receiving the filter module housing of Figure 5 with the one-sided Connecting pipe socket ideally suited, so it is possible, both ends of the module housing in a single Pour out process step (α <90 °). The rotating frame 7 of the device of Figure 2 is on the rotating frame 7 of Figure 6 modified (α <90 °), now the

ausießenden module housing (filter modules) arranged one above the other; centered on the axis, Y "- regardless of the

Arrangement of the connection pipe sockets of the apparatus housing are to each module housings each two resin-storing Chambers 8 - at most three - assigned, with both ends of the arranged Modulhäuce in such a way in each case Process step are poured out. Example ^ The operation of pouring the membrane fibers into the module housing can be divided into three phases: I.Vorbereitung

The prepared, cut to size membrane bundle 3 is inserted into the cleaned and degreased module housing 1. On both ends of the module housing, the molds 13 are screwed according to Figure 7 (closed leave of silicone rubber). The thus prepared module is inserted into the rotating frame 7 of FIG. About the module, the chambers 8 are inserted with the casting resin. The nozzle located on the bottom of the chambers is connected via the pouring tube 10 to the connecting pipe connection 2 of the module housing according to FIG.

2. Pour

The casting is done in two process steps:

a) In the resin receiving chambers 8, the first resin can is poured in an amount to fill the portion D of FIG. 7 is filled. Subsequently, the openable lid 11 of the centrifuge is closed and the motor 6 is turned on. The rotary frame 7 according to Fig.2 must have a number of revolutions, that the entering through the connecting pipe socket 2 of Figure resin in full volume, such as a plug completely the volume of the mold 13 - within the distance marked "0" - fills.

For different types of membranes, for resins of constant composition different centripetal forces must be obtained with the help of the number of revolutions. For example, at a cutting value of 10,000 daltons, the optimum for a PSF "membrane is 52 g (g = 9,81 m / s ² ).

b) In the second stage of the casting, synthetic epoxy resin is poured into the chamber 8 accommodating the MR, after which the motor 6 according to FIG. 2 is again turned on. The resin gc'angt over the pouring tube 10 (see Fig. 2) in the module ends. The rotating frame 7 must have a number of revolutions that due to the acceleration, which arises on the effect of the number of revolutions, the resin completely fills the available space, but the membrane fibers are not compressed at all. This acceleration is 21 g Ig = 9.81 m / s ² in the membrane of the "PSF 10000" type.

During the second phase of the casting process, the polymerization time and heat with the help of aggregates

set, after the expiration of the corresponding speed (0.5 to 2.00 hours), the motor 6 is turned off in Fig. 2.

If the casting process in the arrangement shown in FIG. 2 according to FIG. 3 has been carried out, then the

described Gießarbeitsschritte in the arrangement of Figure 4 repeated.

When the casting according to FIG. 6 has been carried out, the casting process is terminated in one working stage, in two phases. The resulting angle of Harzgießens (Figure 7) be'rägt in the apparatus of Figure 2 a <90 °, while in the apparatus,

which has been modified according to Figure 6, is α = 90 °. The module poured out in this way is dismantled from the rotary frame 7 (FIG. 2) or from the rotary frame 7a (according to FIG. 6), after which the casting mold 13 is unscrewed.

3. cutting

The encapsulated module ends are cut off along the face "V of Figure 7, a machine used for this purpose.

Claims (4)

A method of mechanized pouring with expedient resin of - conveniently arranged in module housings - Kapillarmembranbündeln at an angle α (α <90 °) at both ends of serving for the separation of components of liquid solutions and gas mixtures apparatus, characterized in that in the a module housing (1) enclosed in a device designed for pouring, the mounting resin in the required volume and quality into the resin accommodating chamber (s) (8) above the module housing (s) (1) is flexibly connected pouring tubes (10) is poured, after which with the rotating frame (7) of the device around the axis "Y" with a centripetal acceleration of 10g-100g (g = 9.81 m / see ² ) is rotated, with a the quality characteristic of the resin corresponding number of revolutions, so that the cutting plane "V" between the Harzaufstiege falls in the faulty and flawless fibers, after which the Drehrah men (7) is kept at a constant angular velocity in rotation, for 10 to 30% of the polymerization of the fastening resin, after the completion of the process, the device off, the casting tubes (10) on the module housings (1) are reversed, last the above-described Casting process is repeated. 2. The method according to claim 1, characterized in that the module housing (1) are provided with one-sided connection pipe socket (2), wherein α <90 °, accordingly both ends of the rimmed module housing (1) are poured in one operation. 3. The method according to claim 1, characterized in that in the case when α = 90 ° the auszuschenden module housing (1) are arranged one above the other, and on the axis "Y" center-independent of the arrangement of the connecting pipe socket (2) of the module housing ( 1) -the module housings (1) each two, the resin receiving chambers - but at most three are connected, wherein the two ends of the thus arranged module housing (1) are poured in one step. 4. Apparatus for carrying out the method according to any one of claims 1 to 3, which is a feet-standing, provided with a cylindrical shell, designed with a showcase centrifuge with lower shaft drive and has a aufschließbaren Deckol and a rotor mounted, characterized in that a rotating frame (7) is provided, which for receiving apparatus (module housing) in various quantities and in different mutual arrangement, with one-sided or two-sided connection pipe socket (2) and with different casting angle α (α <90 °), further, is a supply nozzle (14) and a discharge pipe (15) for the cooling air present, and they are for storage of the resin serving chambers (8) provided with a specially designed partition (9), wherein the chambers (8) via flexible pouring pipes (10) with the Connecting pipe socket (2) of the module housing (1) are connected, further the device via a drive motor (6) variable speed.