Precautions regarding the GLT complexed iron-sulfur sedimentation process

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In the coking industry, hydrogen sulfide is converted into elemental sulfur; air is used for bubbling and flotation to form sulfur foam, followed by solid-liquid separation； In other application areas such as the petrochemical industry, the fiber industry, and the fine chemicals sector, the GLT complexed iron-based desulfurization technology employs a sulfur sedimentation process for solid-liquid separation. To ensure proper sedimentation and separation of sulfur in the solution, the following precautions should generally be observed: 1. Regularly add sulfur modifiers to promote the agglomeration of sulfur and its sedimentation, thereby achieving stable separation. The supplementary amount needs to be adjusted regularly based on pilot tests conducted on-site; too much of it will cause rapid settlement and lead to clogging, while too little will result in incomplete settlement, causing high levels of sulfur particles in the depleted solution after regeneration, which hinders the separation and recovery of sulfur ； 2. Select appropriate solid-liquid separation equipment. Currently, mature diaphragm filter presses are being used. Compared to open vacuum bag filters, they require a lower solid content and are suitable for solid-liquid separation at various solid content levels. They facilitate the rapid separation of precipitated elemental sulfur; (due to the low sulfur concentration in the slurry) this promotes further sulfur precipitation, thereby ensuring a high sulfur recovery rate ； 3. Use an automatic control recoil program for recoil. Due to the sinking of sulfur, sulfur deposition is inevitable inside the equipment; therefore, automatic flushing programs are set up for the dead zones and sedimentation concentration structures to carry out regular cleaning, thereby avoiding the risk of blockages over time.