YUBO High-Temperature Silicon Powder Gas–Solid Separation Filter | Middle East Project

Country: Middle East Region

Treated Medium: Silicon Powder

Technology: Low-Resistance High-Temperature Gas-Solid Separation

Background

This project primarily includes construction for cold hydrogenation and distillation, tail gas recovery, reduction, post-processing, hydrogen production via electrolysis, and other supporting production facilities.

Challenge

Significant amounts of high-temperature gas at low pressure are discharged from the cold hydrogenation, tail gas recovery, and reduction workshops. The gas carries silicon powder, which must be filtered out for reuse. Given the low operating pressure of the system, the gas-solid separation filters are required to have a pressure drop ≤ 5 kPa and operate stably over the long term.

Solution

The filters supplied by YUBO feature asymmetric filter elements. An ultra-thin filtration layer, sintered from ultra-fine metal powder, meets the filtration requirements, while a support layer, composed of high-porosity, large-pore filter material, ensures structural integrity. These elements offer high filtration accuracy, large flow capacity, minimal pressure loss, and excellent filtration capacity recovery via back-pulsing.

The filter is equipped with grouped back-pulse components. Filter elements within each group are separated by baffles inside the vessel chamber, facilitating the removal and settling collection of solid particles. A central pipe added to the vessel chamber guides inlet gas to the upper part, creating a top-down gas flow distribution to accelerate the settling and collection of solids. The filter is fitted with a differential pressure transmitter for real-time monitoring of the pressure between the upper and lower chambers. Back-pulsing is triggered automatically when the set differential pressure is reached to restore the filtration capacity of the elements.

Result

The filters supplied by YUBO have operated normally since startup, with all technical indicators meeting the specified requirements.