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Technical & Practical

The Impact of Off-BEP Pump Operation

Best-efficiency point (BEP), the flowrate at which a pump operates at its highest or optimum efficiency for a specific impeller diameter, is a key consideration when assessing pump performance. While most pumps do not consistently operate at their exact BEP,…

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Technology Profile: Sugar Inversion

The substance known colloquially as table sugar is actually sucrose, a disaccharide composed of fructose and glucose. Sucrose is a major agriculturally derived product with an established industry for its extraction, processing and supply. It is mainly employed as a…

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Plot Plan Design: Process Requirements

It is important to conceptualize plant layout in terms of both ideal location and optimal geographical positioning of equipment components For any chemical process facility, the cost of improper or sub-obtimal plant layout can be enormous. Designers are generally well…

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Methane Reforming: A Guide

A wide range of factors must be taken into account before selecting the most appropriate reforming technology From the agrochemicals sector to steel production, from petroleum refineries to chemicals production — many sectors of the chemical process industries (CPI) would…

Temperature Effects for High-velocity Gas Flow

Guidelines are presented to better understand the temperature profiles of high-velocity gases In high-velocity gas flows, such as those that may occur within the discharge piping of a pressure-relief or depressurization valve, the temperature experienced at the wall of the…

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Distillation Column Modeling

Process simulation methods are used to evaluate the performance of proposed distillation systems and improve the performance of existing ones. The most common approaches for modeling distillation processes can be broadly divided into equilibrium and non-equilibrium methods. This article provides…

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n-Butanol from Lignocellulosic Feedstock

The alcohol n-butanol is applied in the production of butyl acrylates to supply the coatings and adhesives industries. It is also used in plasticizers or directly as a solvent. It is commercially produced from propylene and synthesis gas (syngas) by…

Fire-Water Pumps for CPI Facilities

FIGURE 1  Fire-water pump assemblies are typically skid-mounted to ease installation and operation. Shown here is an example of a skid-mounted, diesel-engine-driven, fire-water pump package   Fire-water pumps are critical machines that save lives and prevent chemical process industries (CPI)…

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Solids Handling: Using Flowsheet Simulation to Improve Process Design

Using flowsheet simulation to model processes involving granular solids — either those that are entirely separate from fluid processes or those that are combined with them — has many advantages for improving the process design. These include avoiding unplanned downtime,…

Achieving Excellence in Energy Efficiency

In today’s environmentally conscious world, industrial energy management is increasingly recognized as an essential business practice and economic necessity, rather than an on-again, off-again activity driven by energy prices and geopolitical crises. In this article, we examine the key elements…