Suppression of emissions into the atmosphere
A great many industrial activities produce noxious emissions that are dispersed into the atmosphere provoking serious damage both to the health of persons and to the eco-system. The active carbons represent the most widespread and economical of today’s technologies for the purification of these emissions and in particular for the elimination of volatile organic substances, hydrocarbons, aromatic solvents and chlorine compounds, odours arriving from purification and refuse storage plants. When the granules of active carbon are saturated with the pollutants removed it can be thermally reactivated, allowing it to recover its capacity for specific adsorption and its subsequent re-use in the treatment of gaseous emissions.
Impregnated Carbons for special applications
The elimination of inorganic substances such as acid gases, sulphur compounds, ammonia and vapours of mercury or substances with a low adsorption coefficient on standard active carbon, such as aldehydes and mercaptans with a low molecular weight, call for the use of active carbon impregnated with specific chemical compounds that allow it to fix these types of pollutants within the porous structure of the carbon, This phenomenon, known as chemisorption is often of an irreversible kind: the removed inorganic compounds combine with the chemical product with which the carbon has been impregnated forming stable molecules that are no longer released into the surroundings,
Impregnated active Alumina for special applications
This product is particularly efficacious for the removal of volatile organic and inorganic pollutants, corrosive compounds in the air in enclosed surroundings as well as from gaseous emission in the atmosphere. The particular technique for production allows the impregnated chemical reactants to mix directly with the alumina powder before forming spherical granules, obtaining a homogeneous distribution of the reactants. The product is classified as UL 1, it does not support combustion and the growth of mildew and bacteria.
| ACTIVE CARBONS IN GRANULES with a mineral base and coconut / physical activation |  |
Deep-bed filters (250÷500 mm and more), cells and filtering cartridges |
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Elimination of Volatile Organic Substances from gaseous emissions, air and gas cleaning, abatement of odours |
| EXTRUDED ACTIVE CARBONS with a mineral base / physical activation | |
Deep-bed filters (250÷500 mm and more), cells and filtering cartridges |
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Elimination of Volatile Organic Substances from gaseous emissions, air and gas cleaning, abatement of odours |
| IMPREGNATED ACTIVE CARBONS with a mineral base and coconut/ dealt with specific chemicals | |
Deep-bed filters (250÷500 mm and more), cells and filtering cartridges |
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Elimination of acid gases , H2S, SO4, mercaptans, aldehydes, formaldehyde, ammonia, amines, mercury vapours |
| IMPREGNATED ACTIVATED ALUMINA / dealt with specific chemicals | |
Deep-bed filters (250÷500 mm and more), cells and filtering cartridges |
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Water filtering, elimination of turbidity and suspended solids |
Recovery of solvents
In certain industrial sectors such, for example, the production of adhesive tapes, rotogravure printing and flexographic printing, employment of the technology of adsorption on active carbon and subsequent stripping and recovery of the solvents used in the process is widespread. In this case the primary objective is not only to safeguard the environment but also the economic return for the productive activity deriving from the recovery of the solvents used in the process. The economic advantage of this re-use is large enough that the technology investment is repaid in a very short time. For this reason it is very important to use “specific” active carbons that guarantee high level of efficiency of adsorption and an excellent recovery yield, ensuring the greatest purity of the recovered solvent. Our range of carbons, specific for this application, enable the best product to be found that is adapted to the technology used for the recovery (inert gases, steam, etc.) and to the type of solvents t be recovered.
| ACTIVE CARBONS IN GRANULES with a coconut base / physical activation | |
Deep-bed adsorption filters (250÷500 mm and more) | |
Abatement of solvent emissions into the atmosphere and recovery by stripping with steam or inert gases |
| EXTRUDED ACTIVE CARBONS with a mineral base / physical activation | |
Deep-bed adsorption filters
(250÷500 mm and more) |
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Abatement of solvent emissions into the atmosphere and recovery by stripping with steam or inert gases |
| EXTRUDED ACTIVE CARBONS with a mineral acid-washed mineral base / physical activation | |
Deep-bed adsorption filters
(250÷500 mm and more) |
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Plants for recovery of solvents where greatest purity of recovered solvent is demanded. No phenomenon of hydrolysis of the ethyl acetate |
Purification of fumes from refuse incineration plants:
flue gas cleaning
The thermal destruction of Solid Refuse and the energy recovery from its combustible power constitutes one of today’s solutions with a minor impact on the environment.
All the same, in order to prevent serious damage to the environment and to people’s health it is necessary to purify the fumes emitted from the incinerators, not only from the acid gases they contain but also from dioxin, furans and heavy metals.
The injection of active carbon in powder form, in addition to lime or sodium bicarbonate, into the gases of combustion is the simplest technique available today, being flexible and economical. In order to obtain an effective removal of the contaminants it is, however, fundamental to use the best quality of carbon as well as the most suitable system of dosing; above all using the right type of powdered active carbon since the use of a product of an inadequate quality can often prejudice the quality of the gas emissions, being unable to guarantee the high degree of efficiency of adsorption demanded in the process, even with heavy dosing.
At the present day we have available specific products for this usage, which ensure optimal results whether in dry, semi-dry or humid processes, applied in plants for urban refuse and for industrial and hospital waste.
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ACTIVE CARBONS IN POWDER FORM |
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Continuous dosage in gaseous flows and in plants with a system of dry, semi-dry and humid suppression of fumes. | |
Purification of emissions in heat-exploiting plants and refuse incinerators. Elimination of dioxin, furans and heavy metals |