FIDIA Engineering has recently signed agreements with some of the most important producers of regenerative and catalytic thermal combustors. The collaboration provides that is our society that present itself with the customer, besides taking charge of the realization of all activities by contour to the machine production, that are necessary to the insertion of combustors in the industrial contexts of destination. The wide range of products and services offered by FIDIA Engineering avoids that our society can move the client through solutions technologically disadvantageous.
If it is true that when the pollutants are oxidized, you can use the oxidation reaction with air to turn them into CO2 and H2O, we must always take into account that the gas mixture can be inside or outside the flammable range and this affects both the possibility of self sustaining flame and propagation of explosions and the modification of existing gas lines, presenting three different situations:
1) Organic concentration less than LEL: the flame is not self-supported and methane must be used when the concentration is very low and the process becomes uneconomical. If the concentration is close to the limit of flammability, it is preferable to reduce it by dilution with air, in order to avert danger of explosion on the feed line;
2) If the organic concentration is within the flammable range, the operation is economical and, on the feed line, plant devices shall be provided for fire and explosion suppression;
3) If the concentration is greater than the HEL, it is necessary to perform the air dilution, install the devices for fire and explosion suppression on the feed line and to design the system with particular attention against leakage and infiltration from and to the fuel gas.
Visit the Section USED (http://www.fidiaengineeringsrl.it/2/used_532793.html) where are listed all our available used plants.
REGENERATIVE THERMAL COMBUSTOR
The regenerative thermal combustor that we propose combine together with the combustion chamber, the heat recovery system with the regenerative process and they can be equipped with two or more columns internally insulated, containing ceramic materials specifically selected, according to the design parameters.
The polluted air is fed into the recovery chamber, for be preheated (through the ceramic bed), before entering the oxidation chamber, where in the presence of oxygen, it is reached the ignition temperature with temperatures above 750°C. In the combustion chamber, where residence times are always higher than 0.6 s, occurs the process of oxidation and neutralization of organic compounds. After the purification, the air heats a second recuperative bed, enabling a heat recovery predetermined in the design phase, from 92 up to 97%.
CATALYTIC THERMAL COMBUSTOR
The catalytic combustors that we propose exploit the great professional experience and the collaboration with world's leading manufacturers of catalysts and are routinely used in the presence of organic solvents with average concentrations between 1 and 10 g/m3 and oxidation temperatures between 250 and 400°C.
The oxidation catalytic system has a great simplicity of management and maintenance and allows even unskilled operators to intervene with ease. The system provides the presence of groups of filtration to ensure control over the presence of dust. Different solutions are available: honeycomb structure for high flow rates or pellets and metal oxides for low VOC concentrations.