Small-Scale
Reacting-Filtration-Dewatering-Bone Dry Powder
Leasing & Financing Available
Specialty and fine chemicals, agricultural, pigments and resins, terephthalic acids, cellulose and zeolites.
Bulk and final pharmaceuticals, APIs, nutraceuticals, vitamins, starches and cellulose, citric acid and sugars.
Gypsum, FGD, acid gas scrubbing, specialty wastewater, fly ash, catalyst, metals recovery, bulk mining, tailings, metals, precipitation, dissolution and coal.
Lab tests provide certainty. BHS provides benchtop scale testing either at our lab or yours
We have a Process and Filtration Laboratory for preliminary bench top testing which can either take place in our Charlotte office or at the customer’s site. This is a unique benefit of BHS and all of our work begins with this bench top (pocket leaf filter) tests.
The BHS-Sonthofen Inc., 14,000 ft² facility in Charlotte, North Carolina, is the US headquarters for the BHS filtration, mixing and recycling divisions. It combines sales, engineering, lab testing and pilot plant rental units, spare parts and assembly operations into one location.
BHS serves the chemical, energy, environmental and pharmaceutical marketplaces as well as the concrete, pre-cast and mining industries. For recycling, the size-reduction technologies are used for e-scrap, slag, aluminum and automotive residual shredding.
Abstract: A rotary pressure filter can increase filtration rates, washing and drying efficiencies and eliminate organic solvent emissions.
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Abstract: The appropriate BHS testing procedures can help direct the selection of pressure or vacuum filtration equipment and ensure optimum equipment operation.
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Abstract: The BHS Ph-RPF technology provides improved product quality with more efficient washing ratios compared with the inverting-basket centrifuges. Savings in solvent usage, energy consumption, maintenance costs and capital and installation costs result in overall project savings on the order of 4-6 to 1.
For the PDF version of this document, click here.
Abstract: The BHS Continuous-Indexing Vacuum belt filter (CI-VBF) with 12 m2 of filter area replaced a 440 m2 filter press. The CI-VBF provided improved washing efficency for a higher quality product, and lower operating and lower maintenance costs with a fully automated operation.
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Abstract: This article discusses the choice of thin-cake (2-25 mm) separation technologies and their benefits to optimizing the effectiveness of the production process. The paper continues with a discussion of clean-in-place operations to meet current Good Manufacturing Practices (cGMP) guidelines including riboflavin test and validations. ANSI/ISA S88 (and IEC 61512-1 in the international arena) batch process control system standards are also examined. Finally, factory and site acceptance testing is described.
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Abstract: This article compares three designs of vacuum belt filters (moving tray, rubber carrier belt and the BHS continuous-indexing technology). The evaluation had several stages from initial investigation, bench-top testing and finally pilot-scale testing. The BHS Continuous-Indexing Vacuum belt filter was the selected technology to replace a manually-operated filter press. The return-on-investment (ROI) calculation based upon the BHS process, operating and maintenance benefits allowed the project to be funded with a payback of less than 6 months.
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Abstract: The BHS technologies of Vertical Candle Filters and Horizontal Pressure Plate Filters provide improved product quality with more efficient operations compared with manual pressure filters. The different technologies allow for the selection of the optimum process solution depending upon the cake characteristics and cake structure. Fully automatic operations provide for complete containment of the solids and liquids for reduced maintenance costs and overall project savings.
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This article discusses how the use of thincake vertical candle filters and horizontal pressure plate filters can efficiently remove activated carbon, metal catalysts, and trace insolubles from Active Pharmaceutical Ingredient (API) slurries.
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Published in the March 2006 Issue of PharmaChem, Milano, Italy (PDF)
Abstract:
Candle Filters and Pressure Plate Filters are installed for clarification and recovery applications from liquids with low solids content. The candle filters are vertical candles while the pressure plate filters are horizontal plates and both are designed for complete containment and automatic cake discharge. The cake structure as well as the process parameters determines the optimum thin-cake technology.
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Abstract:During many chemical and pharmaceutical process operations, cake washing is required for the removal of the mother liquor, exchange of solvents, dissolution of soluble components and the displacement of insoluble contaminants. This article introduces pragmatism into cake washing theory and will help to guide engineers during their decision-making processes.
This is a PDF document: click here to download and view this document.
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