DE102007059549A1 - Air washing unit in which fine and very fine dust is removed automatically by addition of very fine water particles thru very fine nozzles generally useful for air cleaning provides more efficient air cleaning - Google Patents

Abstract

Air washing unit in which fine and very fine dust is removed automatically by addition of washing water consisting of very fine water particles thru very fine nozzles. The cleaned air is then displaced by fresh unused air under pressure.

Description

The problem

It forms in highly polluted areas, including on busy roads, a fine dust mixture of toxic and non-toxic solids According to data is on busy roads to
30% terosols
25% silicates
10% organic substances z. B. pollen
20% soot from combustion processes
(Car truck and possibly heating)
u. other

Size of the fabrics:

• Designation PM ₁₀ to PM _2,5
• (i.e., 10 micrometers to 2.5 micrometers in diameter)

These Grain size is like that low, that these substances usually float in the air and thus can only be washed out. This grain size records to the extent that it is "respirable" and thus by the human body - as harmful and toxins - are absorbed.

The solution:

Just with moisture d. H. naturally Moisture (eg rain) or artificial moisture d. H. with blasting nozzles can the fine substances are washed out.

There The fines gradually migrate to the ground (i.e., if none Air movement has occurred) the leaching must also be there.

The Air is sucked in through one or more sieves and over one strong fan in a tubular cavity to an exhaust air area blown. Within the tubular cavity is a water pipe with fine nozzles installed, which creates an interior with mist-like moisture. Thus, one or many of each of the fine water droplets can Apply fine dust particles. By the accumulation of fine dust that grows Weight of the water droplet strong and it forms a water-dirt particles which goes down. Below is a gutter to install over the resulting wastewater is discharged to the sewer.

execution

Sketch with description

investment

ventilation

The openings Be sure to install the dirty air directly above the unit Ground or pavement aspirate. Furthermore, the openings Cover with gratings so that necessary loads are removed can be and the openings for maintenance purposes to commit.

The ventilator

• is also safe to install (against moisture and damage) and so the maintenance is not hindered.

Installation of the nozzles

These are to be optimized, hence the size of the water drops reached an optimal level. Here is a hydrological investigation to be prepared before commissioning. The nozzle heads must be in the frame be interchangeable with maintenance.

Of the Cross section must be changed in the area of the nozzles so that the flow velocity of the Air flow reduces u. thus the sinking of the water debris promoted becomes

in the In the lower area it is important to install a gutter with the required gradient. At the end point of the gutter is an overflow which is the very dirty liquid continues to the sewage system. It must be considered and indeed in Coordination with the hydrological investigation, whether above the Gutters rinsing nozzles d. H. be installed with high performance, to prevent excessive pollution, while the maintenance to be able to remove.

exhaust

These must have such a high outlet, that the exhaust still with gaseous Pollutants - eg. B. from car exhaust - burdened, can not cause any further damage. The air emissions must continue designed so that blockage is not possible Sieves, protection against birds etc. Furthermore, should be considered be whether the exhaust air over a big Exhaust pipe is blown off at a neighboring higher house so that in the lower area by negative pressure fresh air (unloaded) is sucked in and thus the overall air quality is improved.

control

The Investment control can be automatic, eg. With timer, automatic Switch off in case of missing need like rain etc.

Appendices 1

• longitudinal section
• cross-section

1

Water-steam nozzles (possibly Booster station)

2

Zuluftanlage

3

exhaust area

4

fan (Protected from moisture)

5

cleaning nozzles

6

light (Moisture-proof)

7

power connection (from the outside)

8th

Water line connection (from the outside)

9

Waste water connection (from the outside)

10

Floor / street top

L

length

H

height

b

width

t

depth under ground / street

X

simultaneously Entry and exit

It lends itself to producing the plant as a finished part.

Material:

• z. As concrete or steel
• the connections 2 + 3
• d. H. For Zu - u. Exhaust air must be produced on site

Claims (2)

Air washer characterized in that the polluted air is cleaned automatically by the addition of wash water in fine form of dust and particulate matter. Air-washer, according to claim 1, characterized in that the purified air is blown off so high that fresh unused Air supplied by negative pressure becomes.