Bulk Chemical and Petrochemicals

Adipic acid is a key intermediate in the production of nylon 6,6, where purity requirements are extremely stringent to ensure defect-free polymerization. The FUNDABAC® filter is used both upstream and downstream in the process. Upstream, it concentrates adipic acid crystals in nitric acid ahead of pusher centrifugation, replacing inefficient static decantation. Downstream, it plays a critical role in activated carbon treatment stages that remove trace organic and metallic impurities. The filter’s ability to handle slurries and separate activated carbon in a single, enclosed step makes it ideal for this application, reducing both operational complexity and disposal costs.

Aniline production often involves nitrobenzene reduction and requires effective solid-liquid separation to remove metal catalysts and byproducts from aqueous or organic process streams. FUNDABAC® filters provide an enclosed, automated solution to handle these fine particulates, ensuring high product purity and minimizing downstream fouling. The system’s compatibility with acidic and solvent-based media and its ability to integrate into continuous or batch production lines make it a reliable option in the purification of aniline.​

In the manufacture of 1,4-Butanediol (BDO), catalyst separation and clarification of reaction slurries are essential to maintain downstream product quality. FUNDABAC® filters are used to remove suspended solids after catalytic hydrogenation or esterification steps. Their fully enclosed design improves safety in handling reactive intermediates, while the filter’s backflushable elements and heel volume recovery feature optimize yield and reduce product loss. This supports both batch and continuous operations across a range of production scales.​

In chlor-alkali production using membrane cell technology, brinepurity is critical. Even trace levels of suspended solids can damage themembranes and compromise process efficiency. FUNDABAC® filtersare used in the final brine polishing step, reducing solids to below 0.5ppm to protect the electrolysers. Their enclosed design, highthroughput, use of corrosion resistant plastic materials, and flexibledischarge options (slurry or dry) make them ideal for all kinds of salts(solar, vacuum and rock salt). With alpha cellulose precoat and bodyfeed, they achieve long cycle times and minimal brine loss whileensuring reliable operation and compliance with strict purityrequirements.

Epoxy resin production involves multiple filtration steps to removecatalysts, pigments, and polymer fines. FUNDABAC® filters are used toclarify intermediate or final resin batches, ensuring product stabilityand downstream consistency. The filter’s ability to operate in closedsystems with solvent-resistant materials makes it particularly well-suited for handling viscous, reactive, or flammable compounds. Itsautomated backflush and heel volume recovery features helpminimize valuable product loss and reduce manual handling in resinmanufacturing workflows.

Filtration is a key step in the production of ferric and ferrous chloridesolutions, which are widely used in water treatment, metallurgy andpharmaceuticals. FUNDABAC® filters provide efficient removal ofsuspended iron hydroxides or solid byproducts, delivering high clarityoutput for both technical and purified grades. The fully enclosedsystem improves safety and minimizes corrosion risk when handlinghighly acidic or oxidative media. Dry or slurry discharge options allowadaptation to different production and disposal requirements.

In glycol production and recovery, filtration is used to remove spentcatalysts, salts, or carbon fines that form during the reaction orregeneration steps. FUNDABAC® systems enable closed, efficientclarification of ethylene or propylene glycol streams, preservingproduct purity and protecting downstream heat exchangers ordistillation columns. The filter’s corrosion-resistant internals andability to handle high-temperature media make it a robust solution forboth primary production and reclamation processes.

In sodium hypochlorite production, suspended solids such as iron,nickel, and copper must be removed to achieve high product clarityand improve shelf life. FUNDABAC® filters are used to polish thebleach stream, effectively separating these impurities in a single,enclosed system. The result is a premium-grade hypochlorite with hightransmittance and lower degradation over time. The filter’s corrosion-resistant construction and ability to produce dry, compact sludgemake it ideal for handling aggressive media while reducing wastedisposal costs.

In lubricant production, filtration is used to remove catalyst residues,additives, and insoluble particles from base oils and finishedformulations. FUNDABAC® filters provide consistent clarity andprotect downstream blending or packaging equipment. Their ability tooperate at elevated temperatures and handle viscous fluids makesthem suitable for a wide range of synthetic and mineral-basedlubricants. The enclosed system also ensures safe handling offlammable or reactive components, improving both process reliabilityand workplace safety.

Olefins such as ethylene and propylene are often produced withcatalytic processes that generate fine particulates or residual salts.FUNDABAC® filters are used to clarify process liquids, remove polymerfines, or recover catalysts in downstream refining steps. Their robustconstruction supports operation under challenging chemicalconditions, and the heel volume filtration feature minimizes productloss in high-value hydrocarbon streams. With options for dry or slurrycake discharge, the system can be tailored to both batch andcontinuous production lines.

C5 and C9 petroleum resins are used in adhesives, coatings, andrubber compounding, requiring efficient filtration to remove catalystsand neutralization residues. FUNDABAC® filters replace filter pressesand sintered metal filters in multiple process steps, offering superiorperformance even with sludges that have high water content. Solidsare discharged as dry cake, minimizing product loss and simplifyinghandling. The system operates reliably at temperatures up to 260 °Cand enables recovery of hydrogenation catalysts for reuse orreactivation, improving overall efficiency and reducing waste.

Polyols, including polyethylene glycol (PEG) and polypropylene glycol(PPG), require filtration after neutralization or catalyst removal steps.FUNDABAC® filters handle these viscous media efficiently, producingdry, non-sticky filter cake and supporting consistent product quality.Their enclosed design and ability to perform heel volume filtrationreduce product losses and limit manual handling. In many cases, filteraid consumption is reduced or eliminated due to the fine syntheticfilter cloths, lowering operating costs and simplifying validation inpolyurethane precursor production.

Polyphenylene sulfide (PPS) production involves catalyst-drivenpolymerization and requires effective solid-liquid separation to removeunreacted materials, salts, and metal catalysts. FUNDABAC® filtersare used in clarification steps throughout the process to ensure resinpurity and protect downstream thermal or extrusion operations. Thefilter’s resistance to aggressive solvents and high-temperatureslurries, along with its ability to operate in a closed, fully automatedcycle, makes it a dependable solution for PPS manufacturing.

PTA production generates fine catalyst residues and organic solidsthat must be separated efficiently to meet product purity standards.FUNDABAC® filters provide high-throughput clarification of motherliquors and purification stages, enabling recovery of acetic acid orcatalyst solutions with minimal product loss. The closed, automatedoperation reduces emissions and operator exposure, while the abilityto discharge dry or slurry cake provides flexibility for recovery ordisposal processes.

Sodium silicate manufacturing often involves filtration of slurriescontaining unreacted silicates or impurities formed during thedigestion of silica. FUNDABAC® filters are well-suited for thisapplication due to their enclosed operation and ability to handleviscous, high-solids slurries. The system supports continuousoperation with backflushable filter elements and offers reliableclarification in both alkaline and high-temperature environments,improving product quality and plant efficiency.

In syngas production, particularly from biomass or coal gasification,filtration is used to remove char, tar, and catalyst residues fromcondensates or quench liquids. FUNDABAC® filters help protectcompressors, heat exchangers, and downstream catalytic processesby providing consistent removal of fine particulates. Theircompatibility with hot, chemically aggressive streams and their abilityto operate in closed systems make them an effective safeguard in bothpilot and industrial-scale gas synthesis setups.

TDA is a key intermediate in the production of toluene diisocyanate(TDI), manufactured via hydrogenation of dinitrotoluene. FUNDABAC®filters are used across multiple stages of the process: for catalystpreparation, recovery during hydrogenation, and final purification. Incatalyst recovery, the system operates in CONTIBAC® mode with slurrydischarge, while in final polishing, FUNDABAC® is used to filter andwash toxic mother liquors before dry cake discharge. The ability tointegrate washing, drying, and contained solids removal in one systemimproves product purity and supports safe handling of hazardousintermediates.