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Global Environmental Protection System

Admat^TM is an exhaust treatment system that recovers or combusts organic solvents, detergent solvents and odors emitted by factories in such industries as paint, printing, semiconductors, electronic components, precision machinery, chemicals and pharmaceuticals.

Admat^TMSystem

Structure of Admat^TM
Admat employs felt-like activated carbon fiber mats as the adsorption element. These mats are mounted on cylindrical mesh to form cassettes, which are attached to the rotor (Fig. 1). Adsorption and desorption occur continuously and simultaneously while the rotor turns slowly.
Adsorption takes place when unprocessed gases pass through from the outside to the inside of each cassette (Fig. 2a). Desorption, or regeneration, occurs when hot air at 130^¡C passes from the inside to the outside of the cassettes(Fig. 2b).
The change from adsorption to desorption takes place when the cassettes reach the desorption zone in the uppermost part of the rotor. The desorbed solvents are then recovered or oxidized using post-treatment systems such as Cataburn, RTO or Soluse.


Admat^TM C-type (Concentration component)		Fig. 1: Cassette


Fig. 2a: Adsorption		Fig. 2b: Desorption (regeneration)

Low initial and operating costs
Admat uses less activated carbon than conventional adsorption systems, making the initial cost lower. Operating costs are also lower because the activated carbon fibers used as the adsorption element do not require complicated secondary processing, and the cost of replacing the adsorption element is 1/2 to 1/3 less than conventional systems.

Lower energy and space requirements
Because only activated carbon, which has a low heat capacity, is heated, the regenerated hot blast energy is entirely used with good efficiency in desorption, allowing for a high concentration ratio. Moreover, the components used for concentration and post-treatment are small and light.

Applicable at low or high air flow speeds
Admat can treat a wide range of exhaust gases from low airflow volumes at low concentrations to high airflow volumes. Cassettes can be added or removed to accommodate changes in air flow volume.

Safe operation
Because the system uses a small volume of activated carbon, the amount of adsorbed solvent is also less, thus improving safety.

Performance and applicable industries
The effectiveness of the Admat system differs depending on the type and concentration of process gases (Fig. 3). Compressing low-concentration gas to higher concentration increases treating efficiency.
The Admat system design has lower pressure loss. Therefore it has reduced the size and weight of the equipment as well as the power consumption for supply (Fig. 4).


Fig. 3: Processing efficiency for exhaust gases		Fig. 4: Pressure loss in Admat

Admat can be used effectively in the following industries:

Type of Factory	Main Process or Objective	Effective Against
Paint shop	Exhaust gases from spray booths/ovens Improvement of working conditions	Paint thinner
Print shop	Exhaust from ovens Spot exhaust from area around printing machines	Ink thinner
Chemical	Exhaust gases from processes that use organic chemicals Exhaust gases from cleaning processes	Organic solvents
Food processing	Exhaust gases from production lines Improvement of working conditions	Various types of alcohol
Semiconductor	Exhaust gases from cleaning process Exhaust gases from resist-painting process	Organic solvents
Electronics	Exhaust gases from cleaning process	Organic solvents
Pharmaceuticals	Exhaust gases from material production line	Organic solvents
Industrial machinery	Exhaust gases from painting process Exhaust gases from adhesion process Exhaust gases from cleaning processes	Paint thinner
Other	Improvement of condition for plant surroundings	Solvents

Type	Capacity (m³/min)	Suitable Uses

Smaller-->	100-->	Small workshop or workrooms
Medium-->	300-->	Facilities handling semiconductors, printing and painting, etc.
Larger-->	1,000-->	Larger factories or plants, including car paint shops

Composition of the Admat^TM System

The design of pre-treat section depends on the type of process exhaust to be treated. Gases containing dust or mist must be filtered through a dry filter prior to the concentration section.
Absortion and desorption occur repeatedly in the concentrating stage of the Admat system.
Concentrated solvents are to be recovered or oxidized (Direct burning / Catalytic burning) in order to meet pollution regulations. In the case of the oxidizing system, waste heat is utilized for the desorption process.