Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • B01D—SEPARATION
  • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
  • B01D53/34—Chemical or biological purification of waste gases
  • B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • B01D—SEPARATION
  • B01D47/00—Separating dispersed particles from gases, air or vapours by liquid as separating agent
  • B01D47/16—Apparatus having rotary means, other than rotatable nozzles, for atomising the cleaning liquid
  • B01D47/18—Apparatus having rotary means, other than rotatable nozzles, for atomising the cleaning liquid with horizontally-arranged shafts

Definitions

• the invention relates to a device for removing gaseous, liquid or solid constituents from an air stream, with a housing arranged in the course of a pipeline, through which the air stream is guided horizontally.
• An air stream provided with such components is e.g. B. always present when emissions arising during working or processing processes that are harmful to people or operating facilities must be removed. These harmful emissions are then extracted with the help of an air stream.
• the amount of air for this stream is usually the environment of the origin of the emissions by means of a suitable suction device, for. B. a suction hood, removed and discharged into a pipeline.
• the suction device is designed and arranged in such a way that the amount of air drawn in detects and transports the harmful emissions, as a result of which they are removed from the point of origin.
• the harmful emissions that are now in the air stream can be both gaseous, such as in welding place extraction, liquid, such as. B. acid mist, as well as a solid consistency, such as. B. dust. In many cases, they are simply discharged into the atmosphere with the air flow. However, their damaging effect can also be so great that they have to be removed from the air stream before it is discharged into the atmosphere. In view of the stricter requirements for keeping the air clean, this is becoming increasingly necessary.
• Liquid is sprayed - To ensure good contact between the air and its components
• the latter is distributed as finely as possible onto the air flow.
• nozzles are used which break down the amount of liquid into a large number of small droplets and spray it onto the air stream.
• the air flow is then often passed over packing elements in order to intensify the contact between the air and the liquid in the event of turbulence.
• Facilities of this type are e.g. B. in the publication 4/001/1/85 from the company Kunststofftechnik KG, D-5210 Troisdorf.
• the object of the invention is to avoid the disadvantages of the devices according to the prior art and to design a simple, inexpensive and also inexpensive to operate solution corresponding to the type mentioned at the beginning.
• the object is achieved by a device consisting of a housing arranged in the course of a pipeline and containing one or more disk packs, the disk surfaces of which are parallel or at an angle _ ⁇ _ 3 ° to the direction of the air flowing through, wherein the disks are continuously wetted with the liquid by immersing their lower region in a liquid and by constant rotation.
• the individual disks of the various packets are either aligned or offset from one another.
• the number of disks in the individual disk packs is different that in the case of a plurality of disk packs arranged one behind the other, the disks of the next packet in each case begin with their greatest extent either at or behind or before the greatest extent of the disks of the previous packet
• the shape of the discs is round, oval, elliptical or polygonal
• the disks have ribs which are designed in such a way that the disk packs are set in rotation by the air flow without having their own motor drive
• liquid has properties that neutralize acidic or alkaline components in the air stream
• Figure 1 shows the device (1) in a side sectional view.
• the housing (2) has connecting pieces (3) and (3 ') on both sides - through the connecting piece (3'), the air flow comes out of a pipe, not shown, which is connected to the connecting piece (3 ') in the direction of Arrow (4) into the device (1).
• the air flow exits the device (1) via the connecting piece (3) and is passed on through a pipeline, also not shown.
• the lower part of the housing (2) is intended to hold a liquid (7) which is filled up to level (8).
• the removable cover (9) of the housing (2) carries on its underside across the entire width of the housing strips (10), which cause that part of the air flow can not sweep over the disk packs (5), but between the individual Disks (6) must move through.
• FIG 2 is a sectional view of the device (1) along the line A - A in Figure 1.
• the individual disk packs (5) with their plurality of disks (6) are shown here. All discs (6) of a package (5) are attached to a shaft (11) which is supported at both ends in the housing (2).
• the waves (11) are seen from above, i. H. not exactly perpendicular to the housing side walls (12) or (12 ') in the horizontal direction, but inclined 1 °. The inclination takes place alternately once on one side and once on the other side.
• the inclined position causes the air flow through the disks (6) to change direction.
• the air and the constituents contained therein come into intensive contact with the liquid film on the surface of the panes reached.
• the components are held in place by the liquid film and transported by the constant rotation of the disks (6) into the liquid (7) in the lower part of the housing (2). This rotation also maintains the liquid film on the surface of the disks (6) at all times.
• the swirling of the air flow between the individual disks (6) of the disk packs (5) can be promoted by an appropriate design of the disk edges (14). This is e.g. B. achieved in that the disc edge (14) is sharp-edged at right angles to the surface of the discs (6).
• the disk packs (5) can either be rotated by means of their own motor (13), as indicated in FIG. 2, or a motor can be used which, for. B. drives all packages via belts. It has proven to be a very cost-effective solution to provide each disk pack (5) with a motor (13) and, for this purpose, a commercially available motor from automotive technology, which, for. B-. otherwise used to drive windshield wipers.
• the passage of the shaft (11) through the housing (2) can be equipped with a suitable seal in order to protect the motor (13) or the drive elements from the liquid (7) and / or harmful components in the air flow.
• the device (1) installed in front of the fan which serves to promote the air flow, i. H. on its suction side, however, because of the pressure difference between the surroundings and the interior of the housing (2), no media can pass through to the outside.
• Another way to bring the disk packs into the desired rotation is not to make the disk surfaces smooth, but to provide them with ribs. These are designed in such a way that a resultant force from the flowing air is exerted on the disk packs in such a way that they move around their axis without a motor drive being present.
• the liquid (7) is water
• either the level (8) can be kept constant by a suitable device, ie only the evaporation losses are replaced, or a quantity of water is constantly added to and via an overflow dissipated again. In the former case, the water must be renewed when it has reached a certain saturation with the components taken up from the air flow. In the second case, maintenance-free continuous operation is possible.
• B a wastewater treatment plant.
• Periodic renewal of the liquid is also necessary if the liquid (7) has properties to improve the retention of harmful components in the air flow or to neutralize such components. Here it is necessary to replace the liquid before its saturation limit is reached or before its special properties are exhausted.

Landscapes

• Chemical & Material Sciences (AREA)
• Engineering & Computer Science (AREA)
• Chemical Kinetics & Catalysis (AREA)
• Environmental & Geological Engineering (AREA)
• Health & Medical Sciences (AREA)
• Biomedical Technology (AREA)
• Analytical Chemistry (AREA)
• General Chemical & Material Sciences (AREA)
• Oil, Petroleum & Natural Gas (AREA)
• Gas Separation By Absorption (AREA)

Applications Claiming Priority (2)

Publications (1)

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ID=6444697

Family Applications (1)

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Cited By (2)

Families Citing this family (7)

Citations (3)

Family Cites Families (3)

• 1991
  • 1991-11-08 DE DE19914137301 patent/DE4137301C1/de not_active Expired - Fee Related
• 1992
  • 1992-11-09 WO PCT/DE1992/000941 patent/WO1993008901A1/de active Application Filing
• 1993
  • 1993-01-14 TW TW82100207A patent/TW208659B/zh active

Patent Citations (3)

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