Page 3 - capture of airborne pollutants

Pollutant capture Capturing elements

The key to effective extraction Capturing elements are essential for the effective

removal of air pollutants. They are roughly divided into
In modern industrial production, the removal of airborne removal — i. e. the overall efficiency of an extraction and three types or systems: closed, semi-open and open.
pollutants is crucial for the health of employees, process filtration system.
stability, product quality, and environmental protection.
This is particularly important for hazardous fine dusts,
Extraction technology is often reduced to the filter sys- such as those generated during laser material processing
tem. However, even the best filtration system is useless or Additive Manufacturing. Since ambient conditions such
if pollutants are not captured efficiently. The right ideal as adhesion, air flow, or tool movement also play a role, Closed systems
capture technology forms the basis for optimum pollutant choosing the right capture element is essential.
Closed systems are work spaces hermetically sealed from
the environment with connection for air ducts.

4,000 m /h
3

Semi-open systems
1,000 m /h
3

Semi-open systems are enclosures of the pollutant source
50 cm with an open side for handling and with a connection for
air ducting.

25 cm

Open systems

Proximity to the pollutant source is crucial for: Rule of thumb: Double the distance from the Open systems are form elements, available in various
· Degree of collection emission source requires four times the energy variants. Their utilization is defined by shape, geometry,
· Suction capacity/system efficiency expenditure for extraction. and material.
· Investment and operating costs

Other important factors are:
· Characteristics of the capturing elements More detailed information on air pollutant
(shape, size, material, position) collection and capture elements from the
· Characteristics of the air ducts VDMA (German association for machin-
(length, diameter, material, surface texture) ery and equipment manufacturing)

2 Effective capture of airborne pollutants 3