REMBE Q-Rohr for safe indoor explosion venting
Enormous economic damage…
An explosion is a violent expansion or bursting caused by a sudden release of energy from a very rapid reaction creating enormous temperature and pressure increases. Most common reactions are of flammable gases, vapours and cracked dusts - together with ambient oxygen. As a result of today's production technologies and increased production capacities an explosion is a threat companies confront daily.
Manufacturing or production processes which create organic or chemical dusts are extremely hazardous. Finer particles of dust caused by faster machines, automatic conveying systems and air cleaning equipment increase the risk of a dust explosion. The finer the dust particle, the more severe the explosion will be. International guidelines including ATEX 95 (valid for manufacturers of machines and plants) or ATEX 137 (valid for operating companies) require companies to consider the consequences of a dust explosion due to injured workers and damaged plants. In addition, the economic risk to the company due to plant shutdown, contaminated product or adverse publicity must be considered.
Primary explosion protection only provides a limited safety
Special attention is placed on the elimination of the ignition source. The potential source of ignition is for example mechanical or electrically produced sparks, frictional heat, electrostatic charges (s. grounding systems from KERSTING GmbH SAMPLING + GROUNDING, a REMBE® ALLIANCE company), welding or other heat sources. Due to the high amount of potential ignition sources, you can imagine the difficulty in eliminating them all.
Similarly the removal of the fuel is impossible as this is the actual product or a waste product produced in the production process. As remaining measure the oxygen is completely removed. This can only be achieved through very expensive processing. The security limits here are also rapidly reached and the risk of a dust explosion can not be excluded. Therefore a constructive explosion protection is essential.
Flameless indoor explosion venting
The REMBE® Q-Rohr®-3 guarantees the indoor explosion venting without any flame and dust propagation.
The Q-Rohr®-3 is maintenance-
Proven safety for any equipment location
The Q-Rohr®-3 consists of an integrated REMBE® bursting disc which vents the explosion wave in a controlled manner into the Q-Rohr®-3. Flame gases with temperatures higher than 1,500°C (2,732°F) are cooled down to less than 90°C (195°F) via energy transfer within the special stainless steel mesh filter inlet. This leads to a reduction of the expanding gas volume as it extinguishes the flame. Additionally, the pressure rise and high noise level associated with a free vented explosion are reduced to negligible levels. The specially developed stainless steel mesh filter guarantees that no burned or unburned dust passes off the Q-Rohr®-3. The Q-Rohr®-3 is reusable immediately after cleaning.
The Q-Rohr®-3 system is the only indoor explosion device recognized worldwide by NFPA68 and accepted also by VDI-3673 and prEN 14797.
Explosion-, spark- and flame front isolation
The EXKOP® system provides safe, economic and easy explosion-, spark and flame front isolation. The quenchvalves protect interconnected equipment by high speed closure of a fast acting pinch valve.
The quench valve is triggered by 100 % reliable signal from the maintenance-
The EXKOP® has especially been developed for applications with 1-2 quench valves. EXKOP® MINI fulfils these requirements in an ideal manner. Two separate inputs (bursting panels, Q-Rohr®, spark detectors, etc.) can be combined with two quench valves QV II. The use of the system is easy and works acc. to the „one button easy handling” philosophy. As usual all events are observed by a ring storage memory. Advanced technology with EXKOP® MINI and QV II quench valve realized by a new activation system allows totally new applications.
Flame reduced explosion venting for indoor and outdoor applications
The Q-Box is the result of innovative REMBE® safety research and development.
The new protection concept provides flame reduced venting of dust explosions. Industrial plants with low strength and the demand for large venting areas are protected safely and economically - flame propagation and heat are absorbed. The Q-Box allows operators to position machines and equipment acc. to process requirements. It is a cost-saving and flexible venting system for indoor- and outdoor applications.
Photo:
http://www.prlog.org/
