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Separation Technology

Extractive Distillation: An In-Depth Look

Nov 08 2010 01:40 PM | Chris Haslego in Separation Technology

Distillation is the most widely used separation technique in the chemical and petroleum industry. However, not all liquid mixture are amenable to ordinary fractional distillation. When the components of the system have low relative volatilities (1.00...

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Hollow Fiber Membranes

Nov 08 2010 01:20 PM | Chris Haslego in Separation Technology

Membrane separation processes has become one of the emerging technology which undergo a rapid growth during the past few decades. It has drawn the world attention especially in the separation technology field, one of the chemical engineers' specialty w...

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Nov 08 2010 01:30 PM | Chris Haslego in Separation Technology

Crystallization refers to the formation of solid crystals from a homogeneous solution.  It is essentially a solid-liquid separation technique and a very important one at that. Crystals are grown in many shapes, which are dependent upon downstream proc...

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Optimize Liquid-Liquid Extraction

Nov 08 2010 12:40 PM | Madhavan in Separation Technology

Liquid-Liquid extractors are often a neglected part of process plants because they are not well understood and generally form only a small part of the overall process scheme. Often, significant savings in operating costs can be achieved by fine-tuning...

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Packed Column Design

Nov 08 2010 01:20 PM | Chris Haslego in Separation Technology

Designing a randomly packed column is a subtle blend of art and science. Packed columns are most frequently used to remove contaminants from a gas stream (absorption). However, packed columns can also be used to remove volatile components from a liquid...

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Dec 13 2010 01:52 PM | Chris Haslego in Separation Technology

Biosorption is the binding and concentration of heavy metals from aqueous solutions (even very dilute ones) by certain types of inactive, dead, microbial biomass6. Pioneering research on biosorption of heavy metals has led to the identification of a nu...

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Pervaporation: An Overiew

Nov 08 2010 01:20 PM | Guest in Separation Technology

Pervaporation, in its simplest form, is an energy efficient combination of membrane permeation and evaporation.   It's considered an attractive alternative to other separation methods for a variety of processes.  For example, with the low temperature...

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Basics of Leaching

Nov 08 2010 01:30 PM | Chris Haslego in Separation Technology

Simply put, leaching generally refers to the removal of a substance from a solid via a liquid extraction media.  The desired component diffuses into the solvent from its natural solid form.  Examples of leaching include the removal of sugar from suga...

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Sizing of Packed Towers in Acid Plants

Dec 13 2010 10:20 AM | Guest in Separation Technology

Packed towers are key components in sulfuric acid plants. Drying of the sulfur furnace air is necessary to avoid acid condensation and corrosion in downstream equipment and to minimize mist formation. Absorption of SO3 in the Interpass and Final Towers...

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Trickling Biofilters for Hydrogen Sulfide Odor...

Dec 13 2010 01:36 PM | mwu in Separation Technology

Controlling hydrogen sulfide and other odor emissions is a major issue for most wastewater treatment plants. H2S odors can by reduced to very low levels by wet scrubbers using caustic and chlorine or sodium hypochlorite. However, the chemical storage,...

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Distillation Pilot Plant Design, Operating Para...

Dec 13 2010 11:53 AM | Chris Haslego in Separation Technology

In spite of the fact that tremendous progress is being made in understanding the performance of both random and structured packings in distillation, it is a long way from being able to predict from first principles, the efficiency, capacity and pressur...

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Energy Conservation in Distillation

Dec 13 2010 09:23 AM | Chris Haslego in Separation Technology

The preferred method of separation in the chemical industry, distillation, is a very energy intensive process. Fine tuning your distillation columns (and in some cases, making major changes) can save your company thousands of dollars a year or more. Co...

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