August 01, 2012 Fluidized beds are widely used in many chemical process applications to provide better heat and mass transfer between the fluid and the solid, compared to conventional packed- or moving-bed operations. This article summarizes the basic concepts of fluidized-bed technology and provides a useful collection of equations for the design and operation of gas-solids systems.

Start your Chemical Engineering PLATINUM membership today to get ALL of the Plant Cost Index + much more. Get Chemical Engineering’s Plant Cost Index to Improve Plant Cost Estimates… and delivered online in advance of the print edition! For more than 46 years, chemical process industries (CPI) professionals — engineers, managers, and technicians — have used Chemical Engineering ’s ...

Jan 1, 2025 · The industrial sector consumes more than 80% of basic and specialty chemicals. Worldwide, industrial activity saw a modest recovery in 2024. Global industrial production is expected to have increased by 1.3% The overall demand for chemicals remained weak in 2024, but strong growth areas were new investments in chemicals for the semiconductor and electronics industries, battery development and ...

Meeting climate-change goals requires steep reductions in greenhouse-gas emissions from existing power plants and hard-to-abate…Chemical Engineering [January 2025]

Jan 1, 2025 · Permanent magnets — materials that create their own persistent magnetic field — are frequently used in most types of electronics, turbines, engines and motors. Currently, nearly all powerful permanent magnets require rare-earth elements (REEs), such as neodymium or samarium. A new permanent-magnetic material eliminates the need for REEs and their associated environmental and supply-chain ...

Dec 16, 2024 · The preliminary value for the CE Plant Cost Index (CEPCI) for October 2024 (most recent available) rose slightly compared to the previous month’s value, after the final September 2024 value was revised downwardly. The small uptick in the October…

Tire recycling The Mitsubishi Chemical Group (MCG; Tokyo, Japan; www.mcgc.com) has demonstrated chemical recycling of…Chemical Engineering [October 2024]

Oct 18, 2024 · The preliminary value for the CE Plant Cost Index (CEPCI) for August 2024 (most recent available) fell slightly compared to the previous month’s value.

Mar 14, 2024 · The preliminary value for the CE Plant Cost Index® (CEPCI) for January 2024 (most recent available and first data available for this year) increased compared to the previous month. This increase is the second consecutive monthly rise, and is larger than the previous gain. The January increase was largely driven by increases in the Equipment and Buildings subindices. The Engineering ...

Nov 1, 2015 · Ethylene is a critical building block for the petrochemical industry, and is among the most produced organic compounds. It is usually produced in steam-cracking units from a range of petroleum-based feedstocks, such as naphtha, and is used in the manufacture of several major derivatives. The process The process shown in Figure 1 is a steam-cracking process for ethylene production from an ...