Technology Overview

As an eco-friendly activated carbon regeneration technology using superheated steam for water treatment and atmospheric fields, it makes efficient use of environmental resources and make them sustainable.

What is Superheated Steam?

If the water present in the steam is completely vaporized, the water vapor becomes dry water vapor (dry saturated steam) in gaseous state over 100℃, and it is heated to be in a state beyond the saturation temperature, called Superheated Steam.

If the water present in the steam is completely vaporized, the water vapor becomes dry water vapor
(dry saturated steam) in gaseous state over 100℃, and it is heated to be in a state beyond
the saturation temperature, called Superheated Steam.

Required amount at creation

Superheated steam is a heat medium containing
more heat than heated air PROCESS

Superheated steam is a heat medium containing more heat than heated air PROCESS

Temperature	Superheated steam	Heated Air
200℃	2,780kJ / kg	208kJ / kg
300℃	2,980kJ / kg	312kJ / kg

Process

Step 01

Saturated steam
(Wet steam)

Water vapor in
gas-droplet mixture

Step 02

Heating

Completely vaporizing
the water present in
water vapor (wet steam)

Step 03

Superheated steam
(Dry steam)

Heated steam above
saturation temperature

Characteristics of superheated steam

Its heat capacity is very compared to heated air
Rapid heating of the heated object(activated carbon), shortening the heating time

• Transfer speed increases in accordance with temperature at the same pressure
• Specific heat under constant pressure about twice as large as heating air → Excellent heating capacity
• Very high enthalpy due to latent heat → High energy

Energy efficient superheated steam

Heat transfer by air is limited to convection heat transfer. Superheated steam, on the other hand, has excellent thermal efficiency due to the complex heat transfer action transmitted by convection heat, radiant heat and condensation.

Heat transfer by air is limited to convection heat transfer. Superheated steam,
on the other hand, has excellent thermal efficiency due to the complex heat
transfer action transmitted by convection heat, radiant heat and condensation.

Safe equipment without risk of fire

The superheated steam regeneration method can suppress oxidation and combustion of the heated object by heat treatment in an oxygen-free state
(oxygen deficiency among the three elements of combustion).

The superheated steam regeneration method can suppress oxidation and
combustion of the heated object by heat treatment in an oxygen-free state
(oxygen deficiency among the three elements of combustion).

The superheated steam regeneration method can suppress oxidation and combustion of the heated object by heat treatment in an oxygen-free state (oxygen deficiency among the three elements of combustion).

Superheated Steam Activated
Carbon Regeneration

The inside of the regeneration tower and the activated carbon become high
temperature due to superheated steam injected from the irradiation tube
[Desorption and Pyrolysis of Organics by Continuous Superheated Steam Injection]

The inside of the regeneration tower and the activated carbon become high temperature due to superheated steam injected from the irradiation tube
[Desorption and Pyrolysis of Organics by Continuous Superheated Steam Injection]

Before recycling

After recycling

① Injection

② Drying

③ Activation

Recycling process according to temperature change of activated carbon after superheated steam input

100~200˚C

Thermal dry for water separation

250˚C

Decomposition of H2S compounds separating deoxidation, desulfurization, combined moisture CO2

Decomposition of H2S
compounds separating
deoxidation, desulfurization,
combined moisture CO2

Decomposition of
H2S compounds separating deoxidation, desulfurization, combined moisture CO2

340˚C

Decomposition of fat- containing substances (Decomposition into low molecular aliphatic substances such as methane)

Decomposition of fat-containing
substances (Decomposition into
low molecular aliphatic substances
such as methane)

Decomposition of fat-containing substances (Decomposition into low molecular aliphatic substances such as methane)

380˚C

Decomposition of C-containing dry matter

Decomposition of
C-containing dry matter

400˚C

Decomposition of C-0, C-N binders

500~700˚C

Carbide formation

Water treatment biz.

Project that designs, manufactures and construct activated carbon automatic recycling filtration, including a device that removes specific pollutants in water by using activated carbon and regenerates activated carbon destroyed by superheated steam

Project that designs, manufactures and construct activated
carbon automatic recycling filtration, including a device that
removes specific pollutants in water by using activated carbon
and regenerates activated carbon destroyed by superheated steam

Atmospheric treatment

Project that designs, manufactures and construct activated carbon automatic recycling tower, including a device that adsorbs and removes odor-causing substances such as VOCs from the factory with activated carbon and regenerates the destroyed activated carbon using superheated steam.

Project that designs, manufactures and construct activated carbon
automatic recycling tower, including a device that adsorbs and
removes odor-causing substances such as VOCs from the factory
with activated carbon and regenerates the destroyed activated
carbon using superheated steam.