Adipic acid (hexanedioic acid; Figure 1) is among the most important aliphatic dicarboxylic acids, with about 2.5 billion kg produced annually. It is isolated as odorless, colorless crystals with an acidic taste. Adipic acid undergoes the reactions of carboxylic acids,…
Properly specifying process control valves for a plant project is critical to achieving efficient and effective processes. This one-page reference discusses key considerations for specifying control valves. Valve specification Process engineers should take the following aspects into consideration when specifying…
This vibratory feeder is ideal for feeding fragile materials The new line of K3 vibratory feeders (photo) features a unique, patent-pending drive system combined with an advanced control package, resulting in gentler product handling, higher accuracy and quicker product changeover…
Using a vast collection of experimental distillation-column data, sieve tray stability, and its influence on efficiency, are explored in terms of several physical and mechanical properties For trayed distillation columns, the concept of tray stability was introduced by the author…
The Water Environment Federation Technical Exhibition and Conference (Weftec; www.weftec.org) will be held October 18–20 at the McCormick Place Convention Center in Chicago, Ill. A selection of the products and services presented at the upcoming Weftec event are highlighted here.
This company’s sanitary vertical blenders (photo) are engineered for rapid homogenization and drying in delicate applications under vacuum. The design avoids the destructive effects of heat on unstable ingredients, and it promotes vaporization at lower temperatures during gentle agitation while…
This company’s line of multi-purpose pressure gages (photo) includes models designed for use with gas, oil, water and other media not corrosive to brass or bronze. There is also a dedicated device designed specifically for anhydrous ammonia applications. Gage options…
The new Xtreme (forged) head (photo) is designed for use with cone crushers in extremely demanding conditions, and complements this company’s Elect (traditional-cast) and Enhanced (heavy-duty) crusher heads for Nordberg MP800, MP1000, MP1250, HP800 and HP900 crushers. Forged as a…
Vartech Industrial System Cleaner (ISC; photo) provides turbine operators with a non-solvent-based solution for removing varnish and sludge in turbine-oil systems. Vartech ISC can be added directly to oil during operation to clean varnish and sludge before a scheduled oil…
DetaPipe (photo) is a new high-performance clad-metal pipe product designed for use in corrosive, high-temperature processing environments. DetaPipe is produced using a proprietary process that joins corrosion-resistant alloys, such as zirconium and titanium, to lower-cost, base metals, such as carbon…