DE1805591C

DE1805591C - Device for removing dissolved solids from a liquid by reverse osmosis

Info

Publication number: DE1805591C
Authority: DE
Inventors: George Burdette Waukesha Wis. Clark (V.St.A.)
Original assignee: Aqua Chem Inc
Current assignee: Aqua Chem Inc
Publication date: 1972-10-12

Description

sehen dem Membranmaterial und den abstützenden Die in der Zeichnung dargestellte Einrichtungsee the membrane material and the supporting The device shown in the drawing

Rohren herstellen zu können, da diese Maßnahme weist ferner eine Endkappe 32 nut einem μμιλTo be able to produce tubes, since this measure also has an end cap 32 nut a μμιλ

bei der Anordnung nach der Erfindung nicht erfor- auf, deren Grenzfläche 36 sich an_derAusm«™eis not required in the arrangement according to the invention, the boundary surface 36 of which differs from one another

derlich ist. Infolgedessen kann bei einer Einrichtung des Kanals 34 aus der Endkappe 32 befindet, an weinach der Erfindung der Membranaufbau an Ort und 5 eher Stelle an der Endkappe 32 5^m . "? fc'r^rinäthat is. As a result, when the channel 34 is located from the end cap 32, according to the invention, the membrane structure is in place and more likely to be located on the end cap 32 5 ^m . "? fc'r ^ rinä

Stelle auseinandergenommen und ersetzt werden, wo- gesehen ist In die Ringnut 46 ist ein DicMungsnngPlace to be dismantled and replaced, where seen. In the annular groove 46 is a DicMungsnng

durch die Kosten für die Stillstandszeit der Anlage, 30 eingesetzt, dessen radiale Abmessung grouer istdue to the downtime cost of the plant, 30, the radial dimension of which is larger

die Inventarkosten und die Transportkosten vermin- als die des Membranaufbaus 18. Der uicnmngbnngthe inventory costs and the transport costs are reduced than those of the membrane structure 18. The uicnmngbnng

dert werden. 30 stellt eine Abdichtung her zwischen der Grenz-be changed. 30 creates a seal between the border

Die Figur zeigt eine Ausführungsform einer nach io fläche 36 und dem Belag 24 auf derη ^™^Γ™. dem Prinzip der umgekehrten Osmose arbeitenden bau 18. Die zu reinigende Flüssigkeit strömt üurcn Einrichtung zum Reinigen von Flüssigkeiten nach den Kanal 34 in das Innere des rohrförmigen der Erfindung mit einem Kopfteil 10, der mit einer Films 20. .. . , -The figure shows an embodiment of a surface 36 according to io and the covering 24 on the η ^ ™ ^Γ ™. the principle of reverse osmosis working building 18. The liquid to be cleaned flows through the device for cleaning liquids after the channel 34 into the interior of the tubular of the invention with a head part 10, which is covered with a film 20. ... , -

Anzahl von Bohrungen 12 versehen ist (nur eine Die Endkappe 32 ist am Kopfteil 101 nuttds einesNumber of holes 12 is provided (only one The end cap 32 is on the head part 101 nuttds one

Bohrung dargestellt), die das eine Ende 14 der stei- 15 Schraubenbolzens 48 befestigt der sich durch die fen Abstützrohre 16 aufnehmen. Das steife Abstütz- aufeinander ausgerichteten Bohrunge» » «J^d » ^an rohr 16 ist widerstandsfähig für die hohen Drücke, der Endkappe 32 und am ^°Pft«l 10 hinclurcSi «- die normalerweise bei den nach dem Prinzip der um- streckt und mittels einer Muster 54 festgeha'terι vnra gekehrten Osmose arbeitenden Reinigungsanlagen Um die Kanten der Zwischenfl«he der Endkappe 3-auftreten, und die Enden der AbstüUrohre können » und dem Kopfteil 10 ist eine Dichtung 56 angeordmit Rillen versehen werden, um die herum das Kopf- net, die zusammen mit einem Abständig^58 einen stück 10 gegossen wird, wodurch eine mechanische fammelkanal bildet durch den die g^ereinif* ™^u*"f" Verbindung hergestellt wird. keil aus dem Sammelraum 44 zu einer S«nmelstelkBore shown), which attaches one end 14 of the stiff 15 screw bolts 48 which receive through the fen support tubes 16. The stiff support-aligned bore """J ^d " ^on pipe 16 is resistant to the high pressures of the end cap 32 and on the ^ ° Pft "l 10 hinclurcSi" - which normally occur in the case of the principle of the stretched and means a pattern 54 fixed from reverse osmosis-working cleaning systems. net, which together with a spacer ^ 58 is cast in a piece 10, creating a mechanical fuselage channel through which the g ^ereini f * ™ ^u * "f" connection is established. wedge from the collecting space 44 to a half-length

Im Abstützrohr 16 befindet sich eine ausdehnbare fließen kann. Im besonderen ^teB» ^d« Absuindsnng und allgemein zylindrische Membran 18 aus einem a₅ 58 mit der Außenseite 60 an der Dichtung ^ an una rohrförmigen Film 20, der aus einem an sich bekann- hält diese in der R.ngnut 46 fest. Die gla»^te ALüenten halbdurchlässigen Membranmaterial besteht. seite 60 liegt ferner an der Innenseite 62 de. EndkapIn the support tube 16 there is an expandable flow. In particular ^te B ^"d" Absuindsnng and generally cylindrical membrane 18 made of a a ₅ 58 to the outside 60 on the seal to ^ una tubular film 20 from a holding well-known to get stuck in the R.ngnut 46th The gla ^"te ALüenten semi-permeable membrane material. page 60 is also on the inside 62 de. End cap

Der rohrförmige Film 20 wird von einem halostei- pe 32 an und hält diese vom Kopfteil 10 in einem fen porösen Rohr 22 umgeben, dessen Enden (nur bestimmten Abstand. i_nnpnePit_P mitThe tubular film 20 is of a halostei- pe 32 and holds it from the head portion 10 in a fen porous tube 22 is surrounded with its ends (only certain distance. I _nnpneP it with _P

ein Ende dargestellt) mit einem flüssen undurchläs- 30 Der Abstandsnng 58 ist an der Innenseite m t sigen Material 24 beschichtet sind, das als .Verstei- einer Anzahl von Rillen 64 ™™*M?™£rJder f ung für die Zwecke der Abdichtung dient. der 66 voneinander getrennt sind, ^^¹*"" ^^r one end) shown are coated with a 30 influences undurchläs- The Abstandsnng 58 is on the inside mt sigen material 24 which serves as .Verstei- a number of grooves 64 ™™ * ™ M? £ rJder f ung for the purpose of sealing . of 66 are separated from each other, ^^ ¹ * "" ^ ^r

Im Betrieb wir. eine aufgelöste und zu entfernen- Außenseite 68 des Kopfteiles 10 ^¹'^"^¹^ de Feststoffe enthaltende Flüssigkeit in das Innere sen kann die Flüssigkeit im ^s^^el^ra™ " ™"ί des rohrförmigen Films 20 eingelassen und unter 35 die Rillen 64 zu einem ΛΟβμ« 70 bez..ichneeinen Druck gesetzt, der den osmotischen Druck ten Raum zwischen der Endkapp^ « ^de J ^ übersteigt, so daß die Flüssigkeit durch den rohrför- teil 10 fließen. Der Raum 70 steht ™* ^" bohrung migen Film 20 in gereinigter Form diffundiert und 72 an der Endkappe 32 m Verbindung und durch durch das poröse halbsteife Rohr 22 zur Zwischen- diese Bohrung 72 kann die Fluss.tgkeit zu einer Samfläche zwischen dem Membranaufbau 18 und dem 40 raelstellezwecbsp^rerVerwendungnieto steifen Rohr 16 strömt Bei der in der Figur dargestellten AustuhrungsIn operation we. a dissolved and removable outer side 68 of the head part 10 ^ ¹ '^ "^ ¹ ^ de solids containing liquid in the interior sen, the liquid in the ^s ^ ^e l ^ra ™" ™ "ί of the tubular film 20 and under 35 the Grooves 64 are set to a ΛΟβμ «70 denoting a pressure which ^{exceeds the osmotic pressure th space between the end cap ^« de} J ^, so that the liquid can flow through the pipe fitting 10. The space 70 stands ™ * ^ " Bore-like film 20 diffuses in purified form and 72 at the end cap 32 m connection and through the porous semi-rigid tube 22 to the intermediate- this bore 72 can flow to a surface between the membrane structure 18 and the 40 raelstellezwecbsp ^ rerUsenieto rigid tube 16 flows in the Ausuhrungs shown in the figure

Die Ausführin^form nach der Erfindung nutzt form der Erfindung können die Toleranzen _f„,-die die Porosität des halbsteifen Rohres 22 aus, und das Länge der Membrananordnung «rh«dtaBmaßiEgroß durch den rohrförmigen Film 20 diffundierende gewählt werden, da ^^Kch^^slf..^^J°led!s Wasser strömt seitlich zu einem Sammelraum, der 45 Kanälen aufgenommen werden Ji«^™^«- von einem schmalen Hals 44 der Bohrung 12 gebil- sen entfällt die Notwendigkeit, die Membrananorddet vird, und der sich am Außenende der Bohrung nung in das Abstutzrohr genau einpassen zu mu,-betindet. ^sen·The Ausführin ^ form of the invention form using the invention, the tolerances _f ", the porosity -the the semi-rigid tube 22, and the length of the membrane assembly" rh "dtaBmaßiEgroß be selected by the tubular film 20 diffusing as ^ ^Kch ^ ^sl f .. ^^ J ° led! s water flows laterally to a collecting space, the 45 channels are accommodated Ji «^ ™ ^" - formed by a narrow neck 44 of the bore 12 eliminates the need to arrange the membrane, and the must fit exactly into the support tube at the outer end of the bore. ^sen

Hierzu 1 Blatt Zeichnungen1 sheet of drawings

Claims

1 21 2

difference must be maintained in this

Patent Claim: Value Exceeds It is therefore not uncommon for

a pressure difference of about 70 kg / a ^ _to

Device for removing dissolved solids, so that the membrane is strongly supported substances from a liquid must be reversed by 5 in order for them to undergo considerable pressure osmosis with a tubular film made of semi- ken does not tear.

permeable membrane material, a semi-rigid. and pipe

fen, porous, shaped membranes surrounding the tubular film are used, which are in a rigid tube Tube, with a rigid tube inserted at least to support the membrane, ν et partially surrounds the porous tube and supports it, xo the liquid to be cleaned against the inside of the in order to prevent rupture of the porous tube- tubular membrane under a nonene pressure ■ when it is directed from within at a relatively high level. That through the membrane to press in between is exposed, with a head piece to the surface between the membrane and the absiüt-support the rigid pipe, with a zenden pipe diffusing drinking water is in it End attachment with a channel located therein, 15 through small openings on the supporting tube from the seeder with d'.n inside the tubular film is discharged and collected for consumption. Since the: directed is to pass a finite length through one end of the tubular tube and the membrane. · The film must have liquid inside it, must have at the ends of the membrane so that the dissolved solids are removed, a seal can be provided that ve rhi m ■■ ·, characterized in that a sealing 20 that the fed into the tubular membrane to ring (30) at a distance from the end of the rigid neaning water to the interface between 'r Tube (16) arranged is * that flows between the membrane and the supporting tube, at ■; Sealing ring and the end of the rigid pipe is where the drinking water is located. Receiving space (44) provided for residues According to the currently known methods. · .;

is that a spacer ring (58) produces the porous tube 35 required end seal in the manner. surrounds and between the end cap (32) and that the end of the tubular membrane through civ the head piece (10) is interposed, with mixed agent is softened, and that on you The spacer ring has a number of openings softened by means of an inflatable end. (64) forms, which widened the receiving space (44) with rubber tools and a Abdic, a collection point connector :. 30 processing surface is formed. Since the tubular men

If burns are extremely thin, the procedure is ■

the widening of the ends is extremely difficult.

and time consuming and unsatisfactory insofar as vci proportionately many membranes * during opening

The invention relates to a device for removing tearing, so that the one produced in this way removing dissolved solids from a liquid sealing is not very reliable. Since still there < carried out relatively precisely by reverse osmosis with a tubular widening made of semi-permeable membrane material, which is a must, so it is extremely difficult to produce this semi-rigid, porous, the tubular film in order to carry out work at the location of the desalination plant with a rigid tube, the lesser of which is based on the principle of reverse osmosis at least partially surrounds and supports the porous tube, operates, and when membranes are replaced in order to prevent breakage of the porous tube, the entire device must often be removed it took relatively high pressures from the inside and closed the supporting pipes is exposed to be conveyed with a head piece to the support of a factory in which the membranes the rigid tube, replaced with an end cap with 45 and widened, a channel located therein, which is the object of the invention with the interior, therefore, a new and

of the tubular film is oriented to provide improved end sealing through the without one end of the rohi-shaped film made liquid in des- trouble at the point of use sen inside to conduct so that the dissolved solids can not damage the membrane, and removed. 50 which causes a much better seal than before

Because of the ever-increasing water- was known.

scarcity was achieved with considerable effort. Method and means of removing that solves a sealing ring at a distance from the end of the salt from sea water or for cleaning dts rigid pipe is arranged that between the Develop brackish water. So far, the large sealing ring and the end of the rigid pipe have been exposed Successes with facilities in which the use of collection space for residues is provided that eiü Distillation process and electrodialysis process he spacer ring surrounds the porous tube and between aims. Methods for the end piece and the head piece are also promising economical production of drinking water with the help of the spacer ring opening a number of reverse osmosis. 60 gene, which forms the recording room with a

To clean salt water, connect by means of reverse most parts.

Osmc.se has to do that with a semi-permeable mem- By the invention it is achieved that the after

Bran in contact with sea water works on the principle of reverse osmosis Pressure is applied to the osmotic device for cleaning fluids after Pressure of sea water exceeds. For a typical 65 of the invention, a substantial advance against concentration of the salt in the sea water is os- above the previously known facilities, in-mix pressure of the order of magnitude at which the membranes have to be expanded, 24.5 ke / cm-, so that there is pressure on the membrane to ensure a suitable seal between