Introduction to Environmental Equipment [Sterilization Gas / EOG Neutralization / VOC Oxidation Decomposition / Deodorization]

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Environmental equipment

last updated：Jun 25, 2026

SHOEI MFG.CO.,LTD. Japanese Headquarters

With a wealth of achievements both domestically and internationally! Achieving high decomposition rates and energy efficiency! We propose suitable environmental equipment for our customers.

At Seiei Seisakusho, we handle a variety of environmental equipment, including sterilization gas treatment devices that discharge sterilization gas from sterilization devices, deodorization devices that process odors and components from painting drying ovens and food processing, among others. 〇 Sterilization Exhaust Gas Treatment Device [EOCS Series] This device neutralizes ethylene oxide gas (EOG) and releases it into the atmosphere. It can neutralize EOG gas discharged from sterilizers to a concentration of 1 ppm or less. - Achieves high removal efficiency and energy savings through a unique method! - Heat sources can be electric or gas combustion. - Processing capacity can be designed from a minimum of 100 L/min. 〇 Direct Combustion Deodorization Device [CH Series] This device oxidizes and decomposes VOCs and odors at high temperatures of 700 to 800°C. It achieves complete decomposition in a compact and cost-effective manner through direct combustion! The heat exchanger allows for effective utilization of waste heat. - High decomposition rate (expected value 99%) due to direct combustion. - Standard equipped with a heat exchanger, recovering about 50% of waste heat. - Custom design available to meet customer needs. In addition, we also offer catalytic deodorization devices (CT) and heat storage deodorization devices (RTO) with a heat recovery rate of up to 97%. For more details, please refer to the individual catalogs.

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basic information

**EOCS-US Series (Sterilization Gas Removal Device)** Standard EOG removal rate: Harmless up to a concentration of less than 1 ppm Processing capacity: 100–5000 L/min Processing temperature: 280–350℃ (automatic control) Processing method: Direct combustion type with gas burner + catalytic type Heat source: Gas type (electric type series also available) **CH Series (Direct Combustion Deodorization Device)** Standard VOC removal efficiency: Expected value of over 99% Maximum heat recovery rate: 50% + α (via secondary heat exchanger) Processing capacity: Up to 300 N㎥/min A movable demo unit that can be transported to your factory is available. Testing using actual odors is possible. **R-RTO Series (Rotary Heat Storage Deodorization Device)** Standard VOC removal efficiency: Expected value of over 98% Maximum heat recovery rate: 97% Processing capacity: Up to 1,700 N㎥/min **CT Series (Catalytic Deodorization Device)** Standard VOC removal efficiency: Expected value of over 99% Maximum heat recovery rate: 50% + α (via secondary heat exchanger) Processing capacity: Up to 300 N㎥/min We can design according to your usage conditions, so please feel free to contact us.

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Applications/Examples of results

【Applications】 EOCS Series - EOG exhaust gas treatment (a device for removing harmful substances from exhaust gases emitted by sterilizers) - Simultaneous treatment of gases including EOG from aerator rooms and local exhaust systems CH Series - Treatment of odors emitted from painting drying ovens, painting booths, printing dryers, leather foaming furnaces, rotary kilns, incinerators, food processing equipment, semiconductor equipment, heating furnaces, industrial furnaces, processing machines, and various production equipment. 【Track Record】 We have a wealth of delivery experience both domestically and internationally. In Japan (with experience in cold regions and measures against salt damage) Overseas (with experience in handling different voltages and international standards) Please feel free to contact us. 【Equipment】 Deodorization equipment, environmental equipment, deodorization furnaces, exhaust gas treatment, exhaust gas processing, waste gas treatment, environmental facilities, VOC treatment, deodorization machines, energy saving, built-in heat exchangers, waste heat utilization, waste heat recovery, industrial furnaces.