01
Contaminated Gas Inflow
Odor and VOCs pass through pre-treatment before entering the reactor.
CORE TECHNOLOGY
Plasma System
Instead of masking odor and VOCs, we break down molecular structures with highly reactive particles.LOW-TEMPERATURE PLASMA
Energy created at low temperature,
with highly reactive power
Plasma is the fourth state of matter, after solid, liquid, and gas. Applying electrical energy to a gas produces highly reactive particles such as electrons, ions, and radicals.
These active particles react rapidly with the molecular structure of odor and VOCs, converting them into low-molecular-weight substances. Changjo Eng optimizes plasma and catalytic processes to match each site's airflow, concentration, and gas composition.
HOW IT WORKS
02
Plasma Discharge
Electrical energy generates active species such as electrons, ions, and radicals.
03
Molecular Breakdown
Highly reactive particles react with pollutants, driving oxidation and decomposition.
04
Catalytic Post-treatment
The catalyst layer further treats residual substances to improve stability.
TWO TECHNOLOGIES
Proven GAD,
and newly researched DBD
We continue to advance both the technology already applied in the field and the technology under development for the future.
CURRENT TECHNOLOGYApplied in the Field
GAD Plasma
GAD (Gliding Arc Discharge) is a method in which an arc formed between electrodes travels along the gas flow, creating a wide reaction zone. It is the core technology Changjo Eng has applied to every plasma system it has installed to date.
- High reactivity and fast odor treatment
- Modular configuration tailored to site conditions
- Simple structure and convenient maintenance
R&D TECHNOLOGYResearch & Pilot Stage
DBD Plasma
DBD (Dielectric Barrier Discharge) uses a dielectric barrier between electrodes to create a wide, stable low-temperature plasma. We are researching a next-generation system that combines it with a catalyst to efficiently treat VOCs and odor.
- Wide, uniform plasma reaction zone
- Low operating temperature and fast startup
- Structure that allows staged modular expansion
DBD PLASMA R&D
A next-generation, low-temperature technology
to replace combustion-based RTO
The DBD plasma-catalyst hybrid system reacts using electrical energy instead of high-temperature combustion, enabling fast startup and a more compact footprint. Changjo Eng is running pilot tests and performance development toward a viable alternative to RTO.※ This technology is currently in the research and pilot-validation stage; actual application and performance may vary with the target gas and site conditions.Low-Temperature Operation
Electricity-based reaction that reduces the burden of high-temperature combustionFast Startup
Operational quickly without a long preheating periodModular Expansion
Series or parallel configuration based on treatment capacityEnvironmental Benefit
Aims to cut direct carbon emissions versus combustion-based systemsFIELD APPLICATION