RTO system for medical off-gas 30000 Nm³/h

Energy-Efficient VOC Destruction Designed for Medical Applications

Project Overview — RTO System for Medical Off-Gas (30,000 Nm³/h)

Acceptance Time: March 2023
Location: Taizhou, Zhejiang
Solution: Regenerative Thermal Oxidizer (RTO)
Pollution Source: Medical / Pharmaceutical Process Off-Gas
Capacity: 30,000 Nm³/h

Project Description

This system is designed to treat process off-gas from a pharmaceutical production workshop, with pollutant concentrations ranging from 1,000–5,000 mg/Nm³ and a flow rate of 30,000 Nm³/h. Off-gas in this industry typically features large concentration fluctuations and rapid variation rates. Ruiding’s uniquely engineered RTO system provides an efficient and flexible solution tailored to these characteristics.

Process Flow & Working Principle

The off-gas first enters the heat storage chamber through a flame arrester, where it is preheated to approximately 760°C. It then enters the thermal oxidation chamber, achieving full oxidation and decomposition of organic compounds, with flue gas temperatures reaching around 800°C.

Depending on the thermal balance, the resulting high-temperature flue gas flows into another heat storage chamber to exchange heat with ceramic media. When off-gas concentration is high and excess heat is generated, part of the flue gas is diverted to a gas–liquid heat exchanger (G-L exchanger) to prevent overheating at the bottom of the heat storage chambers.

After heat exchange, the combined flue gas enters the secondary spray scrubber for acid removal and demisting, before being discharged safely through the chimney.

System Configuration

The complete system mainly includes:

Three-chamber regenerative thermal oxidizer

Spray scrubber tower

Draft fan

Chimney

Auxiliary equipment

Under normal operating conditions, the system requires no natural gas consumption, relying entirely on the heat generated by the waste gas itself to maintain proper oxidation temperature.

Project Timeline

Equipment Installation Completed: February 19, 2023

Equipment Handover: March 23, 2023