BOOK_CONTENT
From Fluid Handling

Liquid-solid suspensions, called slurries, are produced and handled in many processes throughout the chemical process industries (CPI). Layout and mechanical design considerations are as important as hydrodynamic aspects, such as line sizing, pressure drop and critical deposition velocity, when designing piping systems to handle slurries. Because of the nature of slurries, proper layout and mechanical design are critical to prevent operational problems, such as pipeline plugging and erosion.

Although there are numerous articles and several good books on the hydrodynamic aspects of slurry handling and piping design, there is little information in the open technical literature on practical layout and mechanical-design practices. This article corrects that situation for slurry piping systems. Much of what is presented here was gathered from the technical literature and from design manuals produced by several engineering contractors and engineering departments of chemical manufacturers. The focus is on aboveground slurry piping systems, which are the most common type found in chemical, petrochemical and pharmaceutical plants.

Key selection criteria
Materials of construction. Materials of construction for slurry piping systems are usually selected for their ability to resist corrosion or erosion by the slurry. The following common slurry piping materials have been widely used in the CPI:

  • Carbon...

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© 2014 Chemical Engineering

Products & Services
Double Diaphragm Pumps
Double diaphragm pumps are positive displacement pumps that compress fluid by decreasing the volume of a chamber containing the fluid.
Hand Pumps and Foot Pumps
Hand pumps and foot pumps are manually operated pumps that can driven by hand or foot via a handle or lever. 
Mechanical Vacuum Pumps and Systems
Mechanical vacuum pumps and systems contain devices such as pistons, claws, scrolling spirals, and diaphragms to isolate and compress air.
Condensate Pumps
Condensate pumps are used to collect and transport condensate back into a steam system for reheating and reuse, or to remove unwanted condensate from an HVAC or appliance collection pan.

Topics of Interest

Calculations relating to compressible fluid flow incorporate non-linear equations. Trialand- error solution is often required and arduous to perform. Convergence to the right root can be slow. Even...

PIPING AND FLUID FLOW REFERENCES Anderson Computational Fluid Dynamics, McGraw-Hill; Antaki Piping and Pipeline Engineering, Marcel Dekker; Bausbacher and Hunt Process Plant Layout and Piping Design,...

Valve End Connection Concerns Once the valve has been sized, but before it can be selected, the end connections mating the control valve to the adjacent piping system must be specified. The end...

ADVANTAGES AND LIMITATIONS OF PLASTIC PIPING Advantages Plastic piping materials vary greatly in their characteristics and properties. These differences benefit the consumer in two ways: Through...

What piping materials, black steel piping with cast iron/malleable iron fittings vs. galvanized pipe and fittings, have the lowest corrosion rate when used with softened water? Corrosion can occur...