Activated Carbon Filters VOC

Thermal oxidizers

Activated Carbon Filters VOC

Activated carbon filtration is an air purification technology, thanks to which a gas stream is purified of polluting elements simply going through a bed of a highly porous material and specific surface that absorbs unwanted molecules.

The absorption capacity is proportional to the surface area and is greatly influenced by a number of factors, including the type and concentration of the pollutant being filtered, humidity, temperature, flow rate, contact time and particle size of the active carbon.

Active carbon filters are particularly suitable for the abatement of VOC in general, but a particularly common use is for the deodorisation of industrial activities where unpleasant odours significantly affect production.

Our modular systems allow us to meet any request in terms of volumes to be treated.

 

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Thermal oxidizers – HFiltration

Thermal oxidizers

Thermal oxidizers

The generic combustor is a abatement system designed to eliminate volatile organic compounds (VOCs) and odours from production lines by thermal oxidation of polluting molecules.

Any type of volatile organic matter can be treated in gaseous form and, in the case of concentrations of pollutants above 1.5 g/Nm3, it is usually possible to go into self-sustaining mode reducing fuel consumption to almost zero.

A thermal oxidiser is an apparatus which aims to expose to high temperatures up to 650 ºC effluents containing pollutants by thermally oxidizing the compounds and releasing only inerts into the atmosphere.

The simplest type is that of pure combustor, where the fumes are burned and then released into the atmosphere. This process has a very high energy cost.

To recover heat and avoid waste, recoverable combustors are used in which, by means of a heat exchanger, a part of the heat produced can be reused.

A further improvement is obtained with the regenerative thermal combustor (RTO) in which the heat from the combustion chamber is transferred and retained in a special ceramic filling coming out of it. This heat is used to pre-heat the incoming polluted fumes in order to allow a reduction of the necessary energy.

The regenerative thermal oxidizer allows the oxidation of the VOCs by increasing the temperature of the polluted air beyond 750 ºC; at full capacity the heat produced by the exothermic oxidation reaction is sufficient to maintain the temperature of the combustion chamber to the desired value without the addition of auxiliary fuel (e.g. methane gas)thus minimising the costs of operating and operating the plant.

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Washing tower – SCRUBBER

Washing tower SCRUBBER

Washing tower - SCRUBBER

The scrubber is a filtering device to abate the concentration of VOC and dust found in gas streams. It is used when the substances to be removed react in water.


Abatement takes places through impact between the nebulised washing liquid and the pollutants in the air. The polluted air is suctioned into the lower part of the washing tower and is washed in counter-current at low speed over a broad contact surface.


Wet abatement systems can be composed of several washing stages, even with different types (e.g. Venturi scrubber, floating washing tower, static washing tower, horizontal scrubber) and with different washing solutions according to the pollutants to be removed and their concentrations.

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Oil mist coalescence filter – MCOS

Oil mist coalescence filter MCOS

Oil mist coalescence filter
MCOS

MCOS is a filtration system designed to separate oil and smoke particles from the air in particularly heavy duty work conditions, using the principle of coalescence. Applications for this type of filtration are heavy duty mechanical processing.

The air flow passes through the multilayer fibreglass filter element at low speed, where the coalescence process takes place. By crossing the increasingly thick layers of filtering material, the microparticles of the pollutants are agglomerated, reaching macroscopic dimensions.

What is the coalescence principle? Coalescence is the physical phenomenon through which liquid droplets, gas bubbles or solid particles come together to form larger entities.

Unlike traditional static filters, the coalescence filter does not work exclusively based on clogging, as the particles reach a weight that causes them to fall by gravity into the collecting tank, significantly increasing the useful life of the filter. Once the filter element has been crossed, the air flow goes back to the next element at a low enough speed to avoid dragging the finest particles. To ensure a higher level of purification it is possible to install an additional absolute filtration stage (FFA),with an efficiency rating of 99.99%.

The collected oil particles are expelled through a drain pipe positioned on the back of the filter.

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Cartridge filter – PULSATRON COMPACT™

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Cartridge filter
PULSATRON COMPACT™

The Pulsatron Compact® range includes a wide variety of compressed air self-cleaning high efficiency cartridge filters that can solve all dry filtration problems.

Polluted air goes into the filter through a pre-chamber that helps separate the coarse particles; the flow then goes through the cartridges, depositing the contaminant outside of them, while clean air is delivered through the filter head.


An automatic cartridge cleaningsystem maintains the suction capacity, washing them by blowing compressed air that directs the dustinto the specific collection drawer or bin.

The limited dimensions and minimal noise of the filter mean it can be installed even inside departments near the sourceofpollution.

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Cartridge filter – PULSATRON COMPACT™ ATEX

Cartridge filter
PULSATRON COMPACT™ ATEX

Reliable and silent, Pulsatron Compact® ATEX is a high efficiency self-cleaning modular dust remover cartridge filter suitable for continuous cycle industrial use.

PC® ATEX series filters are designed for industrial applications where dry dust filtration through the principle of physical separation in qualified Ex II 3D environments is required.

The air being treated enters the filter, through a pre-chamber which helps separate the coarse pollutant particles. The air flow then passes through the filtering cartridges, depositing the contaminant outside them, while the clean air is discharged from the upper part of the filter. A cyclic device manages the cleaning of the filter elements with a Pulse-jet system.

IThe Pulse-jet cleaning system consists in the counter-current injection of a high pressure air flow to remove the dust from the filtering elements without interrupting operation. In the event of an explosion, the vent panel mounted on the filter body mechanically collapses by venting the overpressure generated inside the filter upwards.

The design has been created in collaboration with ATEX standard experts and using cutting edge software (Cosmos, Fem and Solid Works3D) that made it possible to carry out simulations to offer Pulsatron Compact ATEX high resistance.

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