BP Oil Spill Solution - "Thermal Desorption Process" is a technology that utilizes heat to increase the volatility of organic contamination (hydrocarbon)

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  • (1888PressRelease) June 24, 2010 - AAA Construction & Development "Thermal Desorption Process"

    The Thermo Desorption Process Plant is a reliable mobile thermal desorption system.

    Thermal Desorption Process:

    Thermal desorption is a technology that utilizes heat to increase the volatility of organic contamination (hydrocarbon) such that they can be separated from the soil.

    Soil is heated in a chamber in which water, organic contaminants and certain metals are vaporized. A gas or vacuum system transports vaporized water and contaminants to an off-gas (i.e. air emission) treatment system. The system aims to volatize contaminants, while attempting not to oxidize them.

    In order to accommodate all industry needs, Thermo Desorption Process has developed a safe and reliable mobile thermal desorption system (the Thermo Desorption Process Plant) which involves three difference phases:
    •pre-treatment and feeding compartment (storage, crushing, screening, blending, pre drying, power sector to heat treatment, etc)
    • thermal desorption (proper desorption treatment system, distribution systems and /or removal of pollutants in the gas phase: double desorption, post-combustion chamber, a unit of abatement of gas pollutants, etc. )
    • cooler plant and heat recovery (compartment that includes facilities for the exchange between the gaseous products of thermal treatment, energy recovery, storage units, solid waste collection process, the units of continuous monitoring of gaseous emissions, etc.)
    Each of these processes comprises one or more modules that are installed on mobile trailers that operate independently one from another.

    The Thermo Desorption Process plant can, therefore, meet all on-site treatment needs, making it one of the most flexible solutions capable of being customized for all customer needs. For example, thanks to a heater exchanger, approximately 80% of heat energy used in the process would be recovered. This allows to break down energy request; so consumption of natural gas for heat production in thermal desorption is very low, reducing atmospheric emissions. Thermo Desorption Process's thermal desorption recover the intrinsic energy kept in the organic pollutant as well. In this way, thanks to overthrow of natural gas consumption, operating costs are really light.

    The pollutants resulted are drawn to an afterburner chamber. What comes out from that are just harmless substances. Through a system of continuous detection (FID) air emissions are always checked to ensure compliance with the limits of laws. Anyway, what comes out from the chimney is just water vapor, CO2, CO and some oxide of substances like sulfur and nitrogen. The on line control allows us to keep checked the situation and act quickly if necessary.

    All of the parts of the plant for thermal desorption are made following the ATEX directives. ATEX is the conventional name of Directive 94/9/EC of the European Union for the regulation of equipment intended for use in hazardous areas. The name comes from the words and Atmospheres Exposable.
    Methane is a lesser risks fuel than other liquid fuels.
    That lessens the dangers for environmental and people.

    •Low methane's consumption
    •Same general benefits of the fixed heat treatment (no formation of dioxins and furans, contaminated soil still retains much of the organic and chemical properties, etc..) and, thanks to the heat recovery, lower energy demand
    •Recovery for the 100% of decontaminated soil
    •Costs of treatment are lower compared to ex-situ treatments: processes are very easy to put into practice by eliminating problems such as transportation of material to place of treatment
    •Plant can be moved quickly between different contaminated areas
    •Thanks to our experience the system allows a wide range of solutions to different requirements, providing the flexibility that other systems often do not have;
    •The possibility of having additional modules for water, natural gas and electricity: they can operate in any situation and with every type of material. The customer only needs to ensure a stable base for the modules (or cement paving).

    AAA Construction & Development

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