DE102010027908A1 - tubular reactor - Google Patents

Abstract

The invention relates to an arrangement for the addition of chlorine dioxide (ClO2) in water (H2O), with a first supply line (5a) for supplying a first reaction component (HCl), with a second supply line (5b) for supplying a second reaction component ( NaClO2), and with a mixing tube (7) for mixing and converting both reaction components to chlorine dioxide, both feed lines (5a, 5b) opening into the mixing tube (7) and the mixing tube (7) within a water line carrying the water to be enriched with chlorine dioxide (8) is arranged coaxially. It is based on the task of specifying a specific design of a generic arrangement with low chemical consumption. In addition, the design should allow existing water lines to be upgraded to an arrangement for adding chlorine dioxide to the water (H2O) carried by the water line (8). This object is achieved in that a substantially flat, annular flange disk (1) is provided, from the periphery of which both feed lines (5a, 5b) extend to the center of the flange disk (1) and open there into the mixing tube (7), in which the mixing tube (7) extends orthogonally to the plane (E) of the flange disk (1) away from this, is closed at its proximal end apart from the mouths (6) of the feed line (5a, 5b), and at its distal end is open, in which the water pipe (8) has two pipe sections (8a, 8b) connected via a flange connection (9), and in which the flange washer (1) is fixed in the flange connection (9).

Description

The invention relates to an arrangement for the addition of chlorine dioxide in water according to the preamble of claim 1.

Such a device is known from the DE 20 2004 005 755 U1 ,

Chlorine dioxide [ClO ₂ ] is a highly toxic, explosive chemical used as a biocide in the disinfection of water. The latter may be drinking water, swimming pool water or industrial water, in particular cooling water.

Due to its hazardous nature and low stability, chlorine dioxide is not transported or stored with relish, instead it is preferably synthesized directly at the place of use, in particular in the water to be treated.

There are different ways of chlorine dioxide known. On an industrial scale, chlorine dioxide is often prepared from sodium chlorite or sodium chlorate using hydrochloric acid, chlorine or sulfuric acid / hydrogen peroxide.

In the chlorite / acid method, hydrochloric acid [HCl] is reacted with sodium chlorite [NaClO ₂ ] to produce chlorine dioxide, water [H ₂ O] and common salt [NaCl]: 5NaClO ₂ + 4HCl → 4ClO ₂ + 5NaCl + 2H ₂ O

In the chlorite / chlorine process, the reaction stoichiometry is: 2NaClO ₂ + Cl ₂ → 2ClO ₂ + 2NaCl

In the chlorate process, sulfuric acid [H ₂ SO ₄ ] is reacted with hydrogen peroxide [H ₂ O ₂ ] and sodium chlorate [NaClO ₃ ] to form chlorine dioxide, sodium sulfate [Na ₂ SO ₄ ], oxygen [O ₂ ] and water: 2NaClO ₃ + H ₂ O ₂ + H ₂ SO ₄ → 2ClO ₂ + Na ₂ SO ₄ + O ₂ + 2H ₂ O

Out DE 20 2004 005 755 U1 An arrangement for the addition of chlorine dioxide in water is known in which two chlorine dioxide forming reaction components are introduced into a installed in a water pipe mixing tube. The water to be treated is supplied and removed via the water pipe. The mixing tube opened on both sides extends coaxially inside the water pipe. For the concrete design of such an arrangement, the script is silent.

Out JP 2008-094662 A An arrangement for the addition of chlorine dioxide in water is known, in which a mutually open mixing tube extends coaxially in a water pipe. Disadvantage of this Anorndung is that the inflowing water through the water pipe also penetrates at the end in the mixing tube to which the Reaktionskompontenten be added. There is thus an early dilution of the reaction components with water, so that the reaction components do not completely react. This is accompanied by an increased use of chemicals.

In view of this prior art, the present invention, the object of specifying a concrete design of a generic arrangement with low chemical consumption. In addition, it should allow the design to upgrade existing water lines to an arrangement for the addition of chlorine dioxide in the guided water from the water line.

This object is achieved in that in a generic arrangement, a substantially flat, annular flange plate is provided, extend from the periphery of both leads to the center of the flange and there open into the mixing tube,
in which the mixing tube extends orthogonal to the plane of the flange of this away, at its flange facing the proximal end apart from the orifices the supply line is closed, and is open at its distal end facing away from the bottle,
in which the water pipe has two pipe sections connected via a flange connection,
and wherein the flange is fixed in the flange connection.

• a) mit einer ersten Zuleitung für die Zuleitung einer ersten Reaktionskomponente,
• b) mit einer zweiten Zuleitung für die Zuleitung einer zweiten Reaktionskomponente,
• c) und mit einem Mischrohr zum Vermischen und Umsetzen beider Reaktionskomponeten zu Chlordioxid,
• d) wobei beide Zuleitungen in dem Mischrohr münden
• e) und wobei das Mischrohr innerhalb einer das mit Chlordioxid anzureichernde Wasser führende Wasserleitung koaxial angeordnet ist,
• f) wobei die Anordnung eine im Wesentlichen ebene, ringförmige Flanschscheibe umfasst, von deren Peripherie sich beide Zuleitungen zum Zentrum der Flanschscheibe hin erstrecken und dort in das Mischrohr münden,
• g) wobei sich das Mischrohr orthogonal zur Ebene der Flanschscheibe von dieser fort erstreckt, an seinem der Flanschscheibe zugewandten, proximalen Ende abgesehen von den Mündungen der Zuleitung geschlossen ist, und an seinem der Flaschscheibe abgewandten, distalen Ende geöffnet ist,
• h) wobei die Wasserleitung zwei über eine Flanschverbindung verbundene Leitungsabschnitte aufweist,
• i) und wobei die Flanschscheibe in der Flanschverbindung festgesetzt ist.

The invention therefore provides an arrangement for the addition of chlorine dioxide in water,

• a) with a first supply line for the supply of a first reaction component,
• b) with a second supply line for the supply of a second reaction component,
• c) and with a mixing tube for mixing and reacting the two reaction components to chlorine dioxide,
• d) wherein both supply lines open in the mixing tube
• e) and wherein the mixing tube is arranged coaxially within a water line to be enriched with chlorine dioxide,
• f) the arrangement comprising a substantially planar, annular flange disc, from the periphery of which both supply lines extend toward the center of the flange disc and open into the mixing tube there,
• g) wherein the mixing tube extends orthogonal to the plane of the flange of this away, is closed at its flange facing the proximal end apart from the mouths of the supply line, and is open at its distal end of the bottle, distal end,
• h) wherein the water pipe has two pipe sections connected via a flange connection,
• i) and wherein the flange is fixed in the flange connection.

A basic idea of the present invention is to arrange the mixing tube in a flanged connection of the water pipe. For this purpose, the mixing tube is centered by means of the supply lines in a matching flange flange flange and incorporated this module in the flange. In this way, it is possible to upgrade existing water pipes, which have a flange connection, by inserting the assembly into an arrangement according to the invention.

The invention thus also an assembly comprising flange, mixing tube and leads of the arrangement.

• a) Ausfindigmachen einer Flanschverbindung innerhalb einer Wasserleitung;
• b) Bereitstellen einer vorerörterten Baugruppe;
• c) Öffnen der Flanschverbindung;
• d) Einsetzen der Baugruppe in die geöffnete Flanschverbindung;
• e) Schließen der Flanschverbindung dergestalt, dass die Flanschscheibe innerhalb der Flanschverbindung festgesetzt ist.

Furthermore, a method for producing the arrangement with the following steps is the subject of the invention:

• a) locating a flange connection within a water pipe;
• b) providing a previously discussed assembly;
• c) opening the flange connection;
• d) inserting the assembly in the opened flange connection;
• e) closing the flange connection in such a way that the flange disk is fixed within the flange connection.

The flange preferably has a bolt circle so that it can be incorporated into existing flanges. The bolts of the flange then extend through the holes of the bolt circle of the flange. Preferably follows the bolt circle of Standard DIN EN 1092-1 / 2 to fit in general.

Flange, supply lines and possibly also the mixing tube are preferably made of PTFE to be resistant to the chemicals used.

The mixing tube preferably extends vertically so that the water flow flowing around the mixing tube gently rinses out the reacted chlorine dioxide.

The invention will now be explained in more detail with reference to an embodiment. For this show:

1 : Mixing tube with supply lines and flange in plan view;

2 : Arrangement, complete in side view.

flange 1 is essentially flat and lies in the drawing plane of the 1 , there is a bolt circle in it 2 introduced so that they can be introduced into conventional Rohrflaschverbindungen. From the periphery of the bottle 1 towards its center, in this embodiment radially, four support arms extend 3 to a central plate 4 , All components mentioned so far are monolithic formed from PFTE and lie in the plane E of the flange 1 , Through the interior of two of the support arms each extend a supply line 5a . 5b and lead together in a blind hole 6 in the central plate 4 ,

On the central plate 4 is a cylindrical mixing tube 7 set from a titanium material. The mixing tube 7 extends orthogonally from the plane E of the flange 1 away from this. At its proximal end is the mixing tube 7 from the central plate 4 apart from the mouths of the supply lines 5a . 5b in the blind hole 6 closed; his the bottle 1 opposite, distal end is mixing tube 7 open.

2 shows how the bottle washer 1 with the mixing tube 7 in a water pipe 8th can be used. This is the Flaschscheibe 1 in a flange connection 9 incorporated, which two line sections 8a . 8b the water pipe 8th combines.

About the supply lines 5a and 5b each becomes a reaction component from a respective outer tank 10a . 10b into the mixing tube 7 pumped. The reaction components may be, for example, hydrochloric acid [HCl] and sodium chlorite [NaClO ₂ ].

The water to be treated with chlorine dioxide [ClO ₂ ] flows along the water pipe 8th along the mixing tube 7 , From the incoming water [H ₂ O] undisturbed react the components in the mixing tube 7 to chlorine dioxide, which at the distal (open) end of the mixing tube 7 exit and mix with the passing water.

LIST OF REFERENCE NUMBERS

1

flange

2

PCD

3

support arm

4

Central plate

5a

first supply line

5b

second supply line

6

blind

7

mixing tube

8th

water pipe

8a

first section of water pipe

8b

second section of water pipe

9

flange

10a

Tank first reaction component

10b

Tank second reaction component

e

Plane of the flange disc

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• DE 202004005755 U1 [0002, 0009]
• JP 2008-094662A [0010]

Cited non-patent literature

• Standard DIN EN 1092-1 / 2 [0017]

Claims (6)

Arrangement for the addition of chlorine dioxide (ClO ₂ ) in water (H ₂ O), a) with a first supply line ( 5a ) for the supply of a first reaction component (HCl), b) with a second supply line ( 5b ) for the supply of a second reaction component (NaClO ₂ ), c) and with a mixing tube ( 7 ) for mixing and reacting both reaction components to chlorine dioxide, d) wherein both supply lines ( 5a . 5b ) in the mixing tube ( 7 ) e) and wherein the mixing tube ( 7 ) within a water line to be enriched with chlorine dioxide ( 8th ) is arranged coaxially, characterized in that f) that the arrangement has a substantially planar, annular flange disc ( 1 ), from the periphery of which both supply lines ( 5a . 5b ) to the center of the flange ( 1 ) and there into the mixing tube ( 7 ), g) that the mixing tube ( 7 ) orthogonal to the plane (E) of the flange ( 1 ) extends away from this, at its the flange ( 1 ), proximal end apart from the mouths ( 6 ) of the supply lines ( 5a . 5b ) is closed, and at its the flange ( 1 ), the distal end is open, h) that the water line ( 8th ) two via a flange connection ( 9 ) connected line sections ( 8a . 8b ), i) and that the flange disc ( 1 ) in the flange connection ( 9 ). Arrangement according to claim 1, characterized in that the flange disc ( 1 ) a bolt circle ( 2 ) having. Arrangement according to claim 1 or 2, characterized in that flange disc ( 1 ) and supply lines ( 5a . 5b ) are made of a chemical material, in particular made of PTFE. Arrangement according to claim 1, 2 or 3, characterized in that the mixing tube ( 7 ) extends vertically. Assembly comprising flange disc ( 1 ), Supply lines ( 5a . 5b ) and mixing tube ( 7 ) An arrangement according to one of claims 1 to 4. Method for producing an arrangement according to one of Claims 1 to 4, characterized by the following steps: a) locating a flange connection within a water pipe; b) providing an assembly according to claim 5; c) opening the flange connection; d) inserting the assembly in the opened flange connection; e) closing the flange connection in such a way that the flange disk is fixed within the flange connection.

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