One. Oxygen Degetter Exhaust Muffler: Application and Product Features

The noise emitted from the steam exhaust of deaerators, exhaust silencers, and other thermal equipment far exceeds the values specified in China's "Noise Hygiene Standards for Industrial Enterprises" (see Appendices 1 and 2). Therefore, the steam silencer series is mainly used for effective noise reduction of steam exhaust from thermal equipment such as air compressors in power generation, chemical, metallurgical, and textile industries. This series of silencers is developed based on the composite noise reduction principle of resistance,喷, and impedance, and boasts advantages such as large noise reduction capacity, small size, light weight, and easy installation. Depending on different applications, there are several forms:

Deaerator Exhaust Muffler (TB) Type

To suppress the noise from high-pressure gas flow, various types of mufflers are already in use worldwide. Most of these mufflers operate on the principle of multi-stage throttling to reduce pressure. However, their complex structures, heavy weights, and difficulty in disassembly and repair have limited their applications. This structure's muffler overcomes these drawbacks.

This model of exhaust steam silencer is designed based on a comprehensive understanding of reasonable noise reduction principles. After passing through a single flow control in the exhaust steam silencer, the high-pressure steam enters the pressure-reducing body, where it undergoes expansion through a large volume, forming low-pressure steam which is then released. During this process, part of the steam flow's internal energy is converted into a certain frequency of acoustic energy, resulting in reduced noise power. However, due to factors such as exhaust steam deviating from the designed value, the noise may still be above the standard. To address this, a double-layered sound-insulating hood is designed around the pressure-reducing body, tailored to the frequency spectrum characteristics of the residual noise emitted by the pressure-reducing body, for effective absorption of the remaining noise. Upon installation in accordance with the requirements, the total noise reduction should reach 36 to 42 decibels.

2. Oxygen Remover Exhaust Muffler (TA Model)

As is well-known, for safety valves on boilers and other thermal equipment, the exhaust steam should avoid excessive noise and ensure smooth discharge. Therefore, the commonly used methods such as multi-stage throttling and small-hole injection for noise reduction should not be employed. This limitation has always been a design challenge for safety valve silencers and a reason for their poor noise reduction performance. The silencer used for safety valves also adopts the noise reduction principle of resistance, injection, and obstruction, replacing the smaller diameter flow control holes with larger diameter holes for expansion. This enhances the noise reduction mechanism of resistance, injection, and obstruction, achieving an ideal noise reduction effect.

The above exhaust muffler meets the requirements of the "Noise Hygiene Standards for Industrial Enterprises" and has been widely applied domestically.