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Ethylene dichloride Recently, Chemetry (Moss Landing, Calif.; www.chemetrycorp.com) and Braskem…
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Piping Design, Part 2 – Flanges

By W. M. Huitt, W. M. Huitt Co. |

  Pipe flanges are used to mechanically connect pipe sections to other pipe sections, inline components, and equipment. Flanges also allow pipe to be assembled and disassembled without cutting or welding, which eliminates the need for those two operations when dismantling is required. In providing a breakable joint, however, flanges unfortunately provide a potential leak path for the process fluid contained in the pipe. Because of this, the usage of flanges needs to be minimized where possible, as with all other joints. The most prevalent flange standards to be used in the process industries are based on those of the American Soc. of Mechanical Engineers (ASME). These include: B16.1 – Cast Iron Pipe Flanges and Flanged Fittings B16.5 – Pipe Flanges and Flanged Fittings (NPS 1/2 through NPS 24, where NPS is nominal pipe size; see Part 1 of this series, CE, February, pp. 42-47) B16.24 – Cast Copper Alloy Pipe Flanges and Flanged Fittings B16.36 – Orifice Flanges B16.42 – Ductile Iron Pipe Flanges and Flanged Fittings Large Diameter Steel Flanges (NPS* 26 through NPS 60) B16.47 – Large Diameter steel flanges (NPS 26 through NPS 60) Flanges are available with various contact facings (the flange-to-flange…
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The Influence of IIoT in the Dewatering Process Step of Pigment Production

Taking a look at dewatering, an important step at the heart of the colour pigment production process. By using a method for a calcined kaolin pigment as an example, we explain how an intelligent filter press can improve pigment production.

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