SU1049099A1 - Apparatus for processing water solutions of hydrogen peroxide - Google Patents

Abstract

DEVICE FOR TREATMENT OF AQUEOUS SOLUTIONS OF HYDROGEN PEROXIDE; including a housing with a flare, an apparatus for introducing and withdrawing a solution and a gas outlet, and a contact layer, characterized in that, in order to increase the process economy by ensuring a continuous flow of the solution through the contact layer, the lid is made with capillary slots, the length of which is equal to their height from a material wetted with water; hydrogen peroxide. § 4s: о о; о: о.

Description

The invention relates to devices for cleaning and maintaining the purity of water solutions of hydrogen peroxide, and can be used to remove other liquids from ionic impurities that release gaseous products upon contact with ion exchange resins.

It is known to use various types of ion exchange resins for cleaning and maintaining the purity of aqueous hydrogen peroxide solutions.

A device for treating aqueous solutions of hydrogen peroxide is known, comprising a housing with a lid, devices for introducing and withdrawing a solution and withdrawal of a container, and a contact layer IJ l.

The operation of the columns and filters is carried out in two ways. In the first case, aqueous solutions of hydrogen peroxide are passed through a column filled with a fixed layer of ion exchange resin. In this case, the use of the device requires the creation of installations with complex circuits, including circulation devices. Columns of this type cannot be used outside specialized enterprises or, if necessary, emergency cleaning of aqueous solutions of hydrogen peroxide during transportation and storage.

In the second case, the column with ion; exchange resin can be loaded into the tank (storage, reservoir. ar) with an aqueous solution of hydrogen peroxide. In this case, the device does not circulate an aqueous solution of hydrogen peroxide through an ion exchange resin.

Thus, in both cases, the use of the device does not ensure the effective purification of aqueous solutions of hydrogen peroxide and the maintenance of their purity in all cases of hydraulic processes.

The aim of the invention is to increase the efficiency of the process by ensuring the continuous flow of the solution through the contact layer. This goal is achieved by the fact that in a device for treating aqueous solutions of hydrogen peroxide thieves, including a housing with a lid, devices for introducing and withdrawing a solution and withdrawing a gas and a contact layer, the lid is made with capillary slots whose length is their height from a material that is wettable. hydrogen peroxide solution.

I Fig. 1 shows the device. with slots made in wall: in {: t. caps, general, appearance; figure 2 - section. A-A in Fig. 1; FIG. 3 shows a possible embodiment of the slots (outside the lid wall); in figure 4. - section bb in fig.Z.

The device comprises a housing 1, a lid 2 with a slot 3. The contact layer 4 is fixed in the housing by means of grids 5, through which hydrogen peroxide solution is introduced and withdrawn. - Lid 2 contains some constant initial amount of gas. The width of the lid in the cover is 0.25-1.00 mm, the length of the slit is equal to its height and is 60-70 mm. The device is made of a material that is well wetted with AQUEOUS hydrogen peroxide solutions and compatible with them. The average density of the device is 5-10% higher than the density of an aqueous solution of hydrogen peroxide (out of contact with it).

The device works as follows.

When immersed in a liquid (aqueous hydrogen peroxide solution), the device is lowered due to its gravity. In this case, the aqueous solution of hydrogen peroxide passes through the contact layer 4 of the ion exchange resin and is purified from impurities. Upon contact with the ion exchange resin, there is a slight decomposition of hydrogen peroxide. The released oxygen is collected under cover 2, while the average density of the device decreases and, when it becomes lower than the density of an aqueous solution of hydrogen peroxide, the medium begins to float. The escape of accumulated oxygen from beneath the lid through the side slots 3 is prevented by the fluid retained in the gaps due to the action of capillary forces. When the device moves up, an aqueous solution of peroxide and water passes up through the layer of ion exchange resin from top to bottom. When the device reaches the surface, the cover rises above it. The liquid in the capillary gap can rise to a well-defined level. As a result of this and under, the action of gas pressure in the cap | The gap in the slits lowers and the accumulated excess gas exits / out of the cap. Average density; device reaches its original value and it again goes down. Thus, as a result of the continuous vertical movement of the device, a continuous circulation of the aqueous hydrogen peroxide solution through the ion exchange resin and its purification is carried out up and down. The constant change in the direction of the circulation of the aqueous solution of hydrogen peroxide prevents the sorption of gaseous oxygen on the ion exchange resin, the formation of loquate gases, prevents the heating and enhanced decomposition of the hydrogen flow.

Claims (1)

DEVICE FOR PROCESSING AQUEOUS SOLUTIONS OF HYDROGEN PEROXIDE; including a housing with a lid, devices for introducing and discharging a gas and a gas outlet and a contact layer, which is necessary in order to increase the efficiency of the process by ensuring the continuous flow of the solution through the contact layer, the cap is made with capillary slits, the length of which is equal to their height from a material wetted with an aqueous solution of hydrogen peroxide. The device contains a housing 1, a cover 2 with slots 3. ^ The contact layer 4 is fixed in the housing using nets 5 through which hydrogen peroxide solution is introduced and removed. - Cover 2 contains a constant initial amount of gas .. Width of the gap in the cover is 0, 25-1.00 mm, the length of the slit is equal to its height and is 60-70 mm. The device is made of material that is well wetted with and compatible with aqueous solutions of hydrogen peroxide. The average density of the device is 5-10% higher than the density of an aqueous solution of hydrogen peroxide (out of contact with it). The device operates as follows. When immersed in a liquid (an aqueous solution of hydrogen peroxide), the device drops down due to its severity. In this case, an aqueous solution of hydrogen peroxide passes through the contact layer 4 of the ion-exchange resin and is purified from impurities. Upon contact with the ion exchange resin, hydrogen peroxide is slightly decomposed. The released oxygen is collected under cover 2, while the average density of the device decreases and when it becomes lower than the density of an aqueous solution of hydrogen peroxide, the device begins to float. The liquid that is trapped prevents the accumulated oxygen from coming under the cover through the side slots 3 ^! in cracks due to the action of capillary forces. When the device I moves up, an aqueous solution of hydrogen peroxide passes through the layer of the ion exchange resin from top to bottom. When the device reaches the surface, the lid rises above it. Jew-! the bone in the capillary slots can rise to a strictly defined level. As a result of this, under the action of the gas pressure in the lid 'i, the liquid in the slots drops and the accumulated excess gas leaves / from under the lid. Average density; device reaches its original value and it again falls down. Thus,. as a result of continuous.! vertical vertical movement. The device up and down continuously circulates an aqueous solution of hydrogen peroxide through a layer of ion-exchange resin and its cleaning. Constant change of direction _; The circulation of an aqueous solution of hydrogen peroxide 60 prevents the sorption of gaseous oxygen on the ion-exchange resin, the formation of local gas layers, prevents the heating and enhanced decomposition of peroxide (hydrogen).