Fundamentals (Chemical Engineering Practice)

Aqueous Morpholine As a Potential Post-Combustion CO2 Absorption Solution

Nov 1, 2012
Krishna Mohan Jinka
Due primarily to high cyclic capacity and high absorption rates compared to other methods, aqueous amine based CO 2 capture has gained great interest for application to post-combustion CO 2 capture. While aqueous amines have a long history for acid gas removal, challenges remain for the commercial...

Mass Transfer Evaluation of CO2 Absorption in a Wetted Wall Column

Nov 1, 2012
Reynolds A. Frimpong
The chemical absorption of CO 2 in solvents is considered as one of the mature process options for reducing CO 2 emissions in power plants. Solvents with fast mass transfer rates and high CO 2 carrying capacity are therefore desired and continue to be explored to reduce equipment size and its...

Appropriate Placement of Compressors and Expanders

Apr 4, 2012
Truls Gundersen
The term “Appropriate Placement” was introduced in Pinch Analysis during the 1980s to indicate how special unit operations should be correctly integrated with the background process to ensure maximum energy savings. Pinch Analysis has provided guidelines for the design of heat exchanger networks as...

Maskless Fabrication of Nanowells Using Chemically Reactive Colloids

Oct 16, 2011
Darrell Velegol
We describe a maskless process for the fabrication of nanowells on a silicon substrate using chemically reactive nanoparticles. Positively-charged amidine-functionalized polystyrene latex (APSL) colloids are adhered onto a silicon wafer, and hydrolysis of the particles' amidine groups generates...

Solubility of CO2 and H2 In PDMS and PEGDME At 25 – 120 Oc

Oct 16, 2011
Robert M. Enick
Advanced gasification power plants will employ the water-gas shift reaction to produce a high pressure gas-phase mixture containing CO 2 , H 2 and water. This shifted syngas mixture at elevated pressures provides ample driving force for the use of physical solvents that will selectively absorb, but...

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