RU2523803C1 - Adsorber for purifying air from vapour of mercury-containing substances - Google Patents

Abstract

FIELD: chemistry.

SUBSTANCE: adsorber for purifying air from vapour of mercury-containing substances comprises a housing with a cover and an adsorbent; the housing and the cover are connected through sealing gaskets by bolts, and inside the housing, coaxial to the housing, there is a cup surrounded by an insulation made of soft heat-insulating basalt plate, and in the cup, in the top and bottom parts of the cup, there are perforated discs, wherein the volume of the cup between the discs is filled with an adsorbent - granular material with high adsorption capacity and which is sulphur-impregnated activated carbon, and meshes are placed between the discs and the adsorbent, wherein a pipe which feeds contaminated air is mounted in the cover and a pipe which outputs air purified from mercury vapour is mounted in the housing.

EFFECT: high degree of purifying a gas stream from a desired component by increasing the area of contact of the adsorbent with the desired component.

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Description

The invention relates to equipment for carrying out adsorption processes in a gas (steam) - adsorbent system.

The closest technical solution to the claimed object is an adsorber containing a housing with a lid and a bottom and an adsorbent layer located between them, according to RF patent No. 2464071 (prototype).

A disadvantage of the known adsorber is that it does not provide a high degree of purification of the gas stream from the target component and dust.

The technical result is an increase in the degree of purification of the gas stream from the target component by increasing the contact area of the adsorbent with the target component.

This is achieved by the fact that in an adsorber for purifying air from mercury-containing vapors containing a housing with a lid and an adsorbent, the housing and the lid are bolted through the gasket, and a glass is installed inside the housing, coaxially to it, around which insulation is laid from a soft heat-insulating basalt plate and in the glass, in the upper and lower parts, perforated disks are installed, while the volume of the glass between the disks is filled with adsorbent - a material in the form of granules with high adsorption capacity and vlyayuschim an activated carbon impregnated with sulfur, and between the discs and the adsorbent laid grid, wherein the lid is located pipe, contaminated air inlet, and in the case - a branch pipe discharging the purified air from mercury vapor.

In Fig.1 shows a diagram of the adsorber, in Fig.2 - an adsorbent made in the form of hollow balls, on the spherical surface of which a helical groove is cut, in Fig.3 - an adsorbent made in the form of cylindrical rings, on the side surface of which a helical groove is cut, in Fig.4 is a section bB of Fig.3, where a helical groove is cut, having in cross section perpendicular to the helical line a profile of the Berl saddle or Itallox saddle.

The adsorber for purifying air from mercury-containing vapors contains a housing 10 and a cover 8 connected by bolts through a gasket 9. Inside the case, coaxially to it, a glass 7 is installed, around which insulation from a soft heat-insulating basalt plate is laid. Perforated disks 2 and 4 are installed in the glass (in the upper and lower parts). The volume of the glass between the disks is filled with adsorbent 3, a material in the form of granules, which has high adsorption ability and is an activated carbon impregnated with sulfur. So that the adsorbent does not wake up through the openings of the perforated disks, nets are laid between the disks 2 and 4 and the adsorbent 3. A nozzle 5 is located in the lid 8, which supplies polluted air, and a nozzle 11 is located in the case 10, which removes air cleared of mercury vapor. Regeneration is carried out by sharp steam through the nozzle 1 located in the lower part of the housing.

The adsorbent is made in the form of balls, as well as solid or hollow cylinders, grains of an arbitrary surface obtained during its manufacture, as well as short segments of thin-walled tubes or rings of equal size in height and diameter: 8, 12, 25 mm.

To increase the degree of purification of the gas stream from the target component by increasing the contact area of the adsorbent with the target component, the adsorbent in shape can be made in the form of hollow balls 3, on the spherical surface of which a helical groove is cut (figure 2), or in the form of hollow balls, on a spherical surface of which a helical groove is cut, having in cross section perpendicular to the helical line a profile of the “Berl saddle” or “Itallox” saddle type (Fig. 4). The adsorbent 12 can be made in the form of cylindrical rings, on the side surface of which a helical groove is cut (Fig. 3). The adsorbent 12 can be made in the form of cylindrical rings, on the side surface of which a helical groove is cut, having in cross section perpendicular to the helical line a profile of the Berl saddle or Itallox saddle (Fig. 4). The adsorbent 12 can be made in the form of toroidal rings (not shown in the drawing). The adsorbent 12 can be made in the form of toroidal rings having a profile such as a “Berl saddle” or a Itallox saddle (not shown in the drawing).

An adsorber for purifying air from vapors of mercury-containing substances works as follows.

Polluted air is supplied to the adsorber through the nozzle 5, passes through the adsorbent 3 and the cleaned is discharged through the nozzle 11. For regeneration, sharp steam is supplied through the nozzle 1.

The adsorber is used to purify air from vapors of mercury-containing substances, for example mercury-containing phosphor during the disposal of fluorescent lamps. The adsorber allows, together with the phosphor, to extract from each lamp at least 95 ... 97% of the mercury contained in it, which accumulates on activated carbon impregnated with sulfur.

Claims (1)

An adsorber for purifying air from mercury-containing vapors containing a housing with a cover and an adsorbent, a housing and a cover are bolted through a gasket, and inside the housing, coaxially to it, a glass is installed, around which insulation is laid from a soft heat-insulating basalt plate, and in the glass, in the upper and lower parts, perforated disks are installed, while the volume of the glass between the disks is filled with an adsorbent having high adsorption ability and representing activated carbon, impregnated gray, and nets are laid between the disks and the adsorbent, with a nozzle in the cover supplying contaminated air, and a nozzle in the housing that removes air cleaned of mercury vapor, characterized in that the adsorbent is made in the form of balls, as well as solid or hollow cylinders, grains of an arbitrary surface obtained during its manufacturing, as well as in the form of short segments of thin-walled tubes or rings of equal size in height and diameter: 8, 12, 25 mm, or in the form of hollow balls, on the spherical surface of which a cut and a helical groove having a cross section perpendicular to the helical line, such as a Berl saddle or Itallox saddle, or in the form of cylindrical rings, on which the helical groove is cut, or in the form of cylindrical rings, on which the helical groove is cut a groove having in cross section perpendicular to the helix a “Berl saddle” or “Itallox” saddle profile, either in the form of toroidal rings, or in the form of toroidal rings having a “Berl saddle” or “Itallox” type profile.

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