Noise reduction of oxygen production plant | comprehensive noise control of air separation unit

1. Project Fact Sheet

Project Title: Chifeng Yuanlian Oxygen Station Noise Reduction Factory Building Project

Project Location: Inner Mongolia Chifeng Yuanlian Iron and Steel Plant

The Problem: The project belongs to the noise comprehensive treatment project of Chifeng Yuanlian Iron and Steel Oxygen Generating Unit, which is to build a new fully sound-proof and noise-reducing plant for the steel auxiliary air-separation oxygen generating station. The core sound source of the oxygen station is the air compressor, booster, oxygen pressure machine, and large-scale pipeline airflow noise. The native noise of the equipment can reach 105~ 115dB (a), the source of sound is many, the vibration is strong, and the noise of air flow is prominent.

2.Key Engineering Methodologies & Noise Control Solutions

1. Heavy-Duty Acoustic Building Enclosure

Engineered heavy soundproof metal wall panels and a soundproof roofing system to form a fully sealed acoustic building.

Integrated high-performance spatial sound-absorption panels on internal walls to suppress reverberation noise within the shop floor, simultaneously lowering outward noise transmission and safeguarding worker health.

2. Impedance Composite Ventilation Silencer System

Installed custom impedance composite ventilation silencers and acoustic louvers at air intake and discharge points.

Allowed required airflow for thermal management while absorbing and attenuating noise, successfully overcoming the trade-off between heat dissipation and soundproof enclosure.

3. Equipment Vibration Isolation & Damping Wraps

Fitted heavy compressor foundations with resilient vibration isolation mounts/dampers.

Installed flexible expansion joints and multi-layer acoustic damping insulation wraps on high-pressure pipelines to block structure-borne vibration transmission across foundations and piping networks.

4. Specialized Acoustic Components & Sealing Treatment

Equipped the building with heavy-duty acoustic access doors, double-glazed acoustic observation windows, and retractable sealable hatches for overhead crane openings.

Applied specialized elastomeric acoustic sealants across all structural joints and gaps to completely prevent sound leaks.

3. Acoustic Results

Environmental & Operational Performance Results

Indoor Acoustic Environment: Workshop reverberation noise was dramatically reduced, meeting workplace occupational health and safety standards for field operators.

Boundary Noise Compliance: Equipment noise attenuated significantly through the acoustic building shell and ventilation mufflers. Factory perimeter noise fully complied with the Emission Standard for Industrial Enterprises Noise at Boundary (GB 12348), eliminating noise pollution risks and passing environmental protection acceptance.