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Processing & Handling

Recently Published Books for the CPI: July 2018

The following is a list of recently published books that may be relevant to different parts of the chemical process industries (CPI).   Microplastic Contamination in Aquatic Environments: An Emerging Matter of Environmental Urgency. Edited by Eddy Y. Zeng, Elsevier…

Biosludge Drying: System Design Schemes for the Sticky Phase

Drying biosludge from wastewater-treatment plants is complicated by the “sticky phase,” making the practice more of an art than a science. Discussed here are efforts to define the beginning and endpoints of this phase analytically The drying of biosludge from…

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Technology Profile: Acrylonitrile Production from Propylene

This column is based on “Acrylonitrile Production from Propylene,” a report published by Intratec. It can be found at: www.intratec.us/analysis/acrylonitrile-e11a. The highly reactive compound acrylonitrile (AN) contains a carbon-carbon double bond conjugated with a nitrile group. The chemical became important…

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Performance Prediction for Industrial Boilers

Understanding boiler performance calculations can allow engineers to improve the operation of their facility’s steam system and better engage with boiler-system vendors Chemical plants, petroleum refineries, power plants and cogeneration systems use oil-and-gas-fired steam generators, fluid heaters and waste-heat boilers…

Facts at your Fingertips: Seal material properties

Fluid seals for chemical process equipment are commonly made from a host of elastomeric and plastic materials. Selecting a seal material requires careful consideration of several criteria. Presented here are short descriptions of the major criteria for seal selection and…

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Facts at your Fingertips: Pneumatic Conveying Flow Patterns

Pneumatic conveying is a ubiquitous mode of conveying bulk solids in a wide range of industries, including chemicals, plastics, grain, food, agriculture, mining, power generation and cement, among others. The flow patterns within conveying lines depend on the properties of…

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Tech Profile: Sodium Lauryl Ether Sulfate Production

This column is based on the report “Sodium Lauryl Ether Sulfate Production – Cost Analysis,” published by Intratec. It can be found at the following URL: www.intratec.us/analysis/sles-e11a. Sodium lauryl ether sulfate (also known as SLES and sodium laureth sulfate) is…

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Photochemical Processes in Stirred Tank Reactors

A general overview of industrial photochemistry and the design of large-scale stirred-tank photochemical reactors Photochemical processes complement or may even substitute conventional (thermal) processes. The radiant energy initiates the reaction, for example by forming radicals, and in most cases, no…

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Highly selective adsorbent tackles complex sulfur species

To meet strict sulfur specifications and reduce emissions, amine scrubbing and caustic treatment are frequently used to remove hydrogen sulfide from gas and liquid streams, but these methods are not effective for handling more complex organo-sulfur compounds, such as thiophenes…

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A Pt-free electrode for making H2 from water

One of the major obstacles to making hydrogen economically by splitting water is the high cost of noble-metal electrodes. Less expensive, non-noble metals only function as electrocatalysts under alkaline conditions, where the reaction requires more electricity. Now, professor Ryoichi Ito…