Petrochemical Process Media Purification
A large-scale petrochemical integrated enterprise requires high-standard physical purification of the circulating or reaction medium C12 (C12 alkane/olefin) in certain fine chemical processes (such as alkylbenzene production or detergent raw material processing) to ensure the efficiency of subsequent chemical reactions.
In the petrochemical process circulation, C12 media quality directly affects production benefits:
Catalyst poisoning and coking: If the media contains fine solid particles (such as upstream corrosion products or catalyst fragments), it will block downstream fixed-bed reactors, causing catalyst activity decline.
Product color and indicator control: Trace impurities under high-temperature reactions may cause the final product color to exceed standards, affecting the grade evaluation of fine chemical products.
High-flow interception rate bottleneck: The process requires maintaining high single-pass filtration efficiency at 30m³/h flow rate, and ordinary commercial filter units struggle to maintain precision under high differential pressure and high flow.
Chemical compatibility requirements: C12 is an organic medium with specific chemical corrosion resistance requirements for seals and filter cartridge materials.
A 30m³/h dedicated process purification unit was developed for the enterprise's specific operating conditions:
Precision process filtration: Using custom high-precision filter cartridges (5–10 μm, β₅ ≥200) to intercept micron-level impurities in the C12 media, protecting downstream catalytic reactors.
Chemical compatibility optimization: The entire unit uses 316L stainless steel, equipped with fluororubber (FKM) or PTFE seals, ensuring no swelling or leakage under long-term organic media contact.
Dual parallel design: The system uses a dual parallel structure, supporting filter cartridge maintenance or online monitoring without interrupting the production process (N+1 redundancy).
Stable differential pressure: Optimized fluid dynamics design maintains low system pressure drop at 30m³/h flow rate without affecting the pressure balance of the entire process line. Equipment is designed per GB/T 150 pressure vessel standards, with electrical components in organic media areas meeting explosion-proof (Ex) requirements.
The 30m³/h custom process purification unit provided the C12 process line with the required purification precision, ensuring the continuity of chemical reactions and protecting downstream catalysts. High-precision filtration effectively intercepted micron-level impurities, improving product purity and reducing impurity content. According to customer feedback, downstream catalyst service life was extended approximately 40%, and unplanned process shutdowns caused by impurities were effectively reduced. The equipment's stability met the enterprise's expectations.
In petrochemical processes, tiny impurities can cause significant losses. This 30m³/h custom unit provides the required purification precision for our C12 process line. This is not just filtration — it is ensuring chemical reaction continuity and protecting catalysts. The equipment's stability meets our expectations.