Chuan Ning Biotechnology

Project location: Chuan Ning Biotechnology Co., Ltd., Yili Prefecture, Xinjiang

Number of rotors: 2 sets

Model: 4250-400

Type of exhaust gas: VOCs gas produced during cephalosporin production

Reason for replacement: The old ADR rotor failed to meet the treatment efficiency standards

Original manufacturer of ADR: Western Technology Research Institute

Pre-replacement usage time: Less than 5 years

Replacement date: 2021.06

Main situation:

This project is located at Chuan Ning Biotechnology Co., Ltd., Yili Prefecture, Xinjiang. During the cephalosporin production process, VOCs gas is generated, including ethanol, acetone, dichloromethane, butanone, xylene, styrene, etc. The exhaust gas concentration is approximately 30mg/m³, and the processing air volume is 105000Nm³/h. The original treatment system of the owner used the rotating discs from Western Japan Technical Research. During the operation, there was a serious clogging problem with the rotating discs, and the adsorption efficiency of the discs significantly decreased.

Figure 1 shows the photos of the on-site disassembly of the old ADR.

Figure 2 shows the photo of the on-site installation of the new ADR.

Post-replacement operation conditions:

Outlet concentration of the turbine: ≤ 2mg/m3

Turbine processing efficiency: > 95%

Service aspects:

The operating space of the turbine is narrow, making it impossible to use cranes and other tools for the overall replacement of the turbine blades. After on-site investigation by the Nabok technical engineers, it was decided to use the 1/8 module replacement method to replace the turbine blades.