PF
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Pressure Plate Filter Recovery of clear filtrates INTO VALUE

Administrative building of BHS-Sonthofen

BHS-Sonthofen We are a mid-sized, owner-operated group of companies with over 300 employees. We are passionate about technology, innovative, and place a premium on quality. The group of companies is based in Sonthofen, Germany, and has subsidiaries in the US, China, India and Russia. We are a successful global player in the fields of mixing, crushing, recycling and filtration technology. We provide our customers with well-engineered, state-of-the-art solutions. Cake filtration BHS has specialized in cake filtration for more than 50 years. We supply a broad range of pressure and vacuum...

Pressure plate filter 4 BHS pressure plate filter (PF) The BHS pressure plate filter is a batch-operated filter with plate-shaped filter elements arranged one above the other inside a pressure vessel. The filter cake builds up on the filter plates. The clear filtrate is discharged inwards through the hollow shaft. All the process steps are carried out under pressure. Cake discharge is accomplished by vibration of the filter elements. The filter is used primarily for cake-forming solid-liquid separation of suspensions with a low solids content that are moderately or extremely difficult to...

High process versatility A variety of options are available for treating the filter cake, enabling the individual process requirements to be met. The cake can be washed in one or more stages. Air, nitrogen or other gases can be passed through the filter cake to achieve a greater degree of dewatering. If required, precoat filtration by means of filter aids is possible. For applications in the pharmaceutical, food and bioprocess industries, we make specially equipped, GMP-compliant filter plants incorporating CIP equipment if necessary. We are also ATEX certified. Vibration discharge The...

Structure of a pressure plate filter Filtrate outlet Vibration motor Drive head Vibration motor Static seal Hollow shaft Spring isolators Set of plates Pressure vessel Heel discharge Discharge valve Suspension feed Filter cake discharge Functional description Set of plates and cake formation Shaft seal The individual filter plates consist of slightly conical stainless steel plates. On the surface is a coarse-mesh backing screen that supports the actual filter cloth. The filter cake builds up on the filter cloth. The prevailing pressure differential causes the clear filtrate to flow into the...

CAKE FORMATION AND CAKE DISCHARGE Cake formation During the filtration cycle, the solid particles are deposited as a filter cake on the surface of the slightly conical plates due to the applied pressure differential. The filtrate is discharged through the backing screen, the plate hub and the hollow shaft (blue arrow). Hub Filter cake Filter cloth Clamping ring Backing screen Plate Cake discharge After the filtration cycle, the discharge valve opens. The filter cake is located on the filter plates. The set of plates is subjected to defined vertical and horizontal vibrations by unbalance...

Plate filter skid packages 8 BHS manufactures pressure plate filters and corresponding skids for diverse applications. These are based on a range of standardized modules for skids from 0.33 m² to 45 m² filter area. BHS also makes individually engineered filter skids to customer specifications. The BHS plate filter skid consists of the following four main components: » Pressure plate filter » Piping with fittings and measuring instruments » Steel structure » PLC Controls The skid can be supplemented and expanded with further accessories. Process solution Besides the machinery itself, BHS...

Accessories & versions 9 www.bhs-sonthofen.com Heel filtration device The heel filtration device enables the residual volume to be processed on completion of the filtration cycle by means of an internally filtering cylinder at the vessel cone. This ensures complete heel filtration with a minimum of compressed gas. Precoat or body feed In certain cases a precoat or body feed is required to help with filtration. They are used to suspend powdery filter aid. The precoat operates in batch mode, whereas the body feed runs continuously. BHS provides the precoat or body feed system including tanks,...

Tests give certainty We perform initial tests with our pocket leaf filters. These tests can be performed quickly and easily at your location or in any of BHS locations worldwide. Basic data can thus be obtained about the filterability of a suspension and the general design of a production filter. For more extensive tests, even spanning several weeks, we can rent out pilot and lab filters for all BHS filter types. Filters made of different materials are also available. If necessary, the filters can be equipped to meet specific customer requirements. These filters can be used to examine...

Technical data 11 www.bhs-sonthofen.com Performance data and dimensions Type Plate diameter Filter area/plate Active filter area Vessel diameter Process criteria Mode of operation Operating pressure Operating temperature Solids content (suspension) Cake thickness Particle size Filtration capacity – suspension Filtration capacity – dry solid Active filter area All specifications apply to the standard design. Technical data for customized designs may differ from the specified data. All technical data may change due to development. Subject to modification without notice.

08.2013_801000022_EN © 2013 BHS-Sonthofen GmbH All rights reserved. Mixing technology Crushing technology Recycling technology Filtration technology BHS-Sonthofen GmbH An der Eisenschmelze 47 87527 Sonthofen Germany Phone + 49 8321 6099 0 Fax + 49 8321 6099 220 info@bhs-sonthofen.com www.bhs-sonthofen.com USA BHS-Filtration Inc. 14300 South Lakes Drive Charlotte, N.C. 28273 Phone + 1 704 845 1190 Fax + 1 704 845 1902 info@bhs-filtration.com www.bhs-filtration.com India BHS-Sonthofen (India) Pvt. Ltd. 6-3-252/1/7/B, 3rd floor, Opp. IIPM Erramanzil / Banjara Hills Hyderabad 500 034 Phone...