Extraction plant
Safe systems for hazardous areas (Atex 94/9/EC)
Ex-protection system with pressure relief
for service in Zone 22 (as per Atex 94/9/EC)
- Casing pressure relief by ECO-Q-Rohr (Q-pipe) venting mechanism
- Explosion isolation in form of product barrier choke
- Pressure isolation of untreated gas side by explosion absorbers
- Level monitoring of product barrier choke
- Pressure isolation of the clean gas side by explosion protection valve (optional)
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| Technical data |
| Motor power (KW) |
30 |
| Air flow rate |
1.400 m3/h |
| Vacuum |
up to 800 mbar |
| Filter surface |
11 m2 |
| Piping |
800 m |
1. How the Q-pipe works
A. Development stage
The Q-pipe consists of built-in burst disc
which controls the explosion shock wave and releases it into the Q-pipe. (Fig. A + B) |
B. Overfeeding effect
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C. Contraction effect
The hot flame gases (temperatures up to 1.500°C) are cooled inside a special, stainless-steel mesh filter cage.
This reduces the gas volume
and extinguishes the flame. (Fig. C) |
D. Pressure relief
The specially developed built-in, stainless steel mesh filter
ensures that no burnt or unburnt dust escapes. (Fig. D) |
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2. Explosion isolation
The simplest and most economic type of explosion isolation it to fit a product barrier choke to the discharge of the filter housing to be protected.
You can, for example, safely protect a filter box from an explosion in the discharge area by not exceeding the minimum fill level.
RUWAC discharge options
Twin slide system
Pipe butterfly valve
Cell wheel sluice
The size of the product barrier choke depends on the properties of the material, geometrical proportions and the respective load. |
3. Explosion diverters
The simplest and most economic type of explosion isolation it to fit a product barrier choke to the discharge of the filter housing to be protected.
You can, for example, safely protect a filter box from an explosion in the discharge area by not exceeding the minimum fill level.
RUWAC discharge options
Twin slide system
Pipe butterfly valve
Cell wheel sluice
The size of the product barrier choke depends on the properties of the material, geometrical proportions and the respective load. |
4. Fill level monitoring
| Chokes consisting of an adequate depth of product (e.g. at the silo discharge) prevent flames from penetrating the product. |
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