Process integration study of tail-end Ca-Looping process for CO 2 capture in cement plants

Integration of a Ca looping system for CO2 capture in existing power plants

This work analyses a Ca looping system that uses CaO as regenerable sorbent to capture CO2 from the flue gases generated in power plants. The CO2 is captured by CaO in a CFB carbonator while coal oxycombustion provides the energy required to regenerate the sorbent. Part of the energy introduced into the calciner can be transferred to a new supercritical steam cycle to generate additional power....

Kinetics of calcination of partially carbonated particles in a Ca - looping system for CO 2 capture

CO2 multicyclic capture of pretreated/doped CaO in the Ca-looping process. Theory and experiments.

We study in this paper the conversion of CaO-based CO2 sorbents when subjected to repeated carbonation-calcination cycles with a focus on thermally pretreated/doped sorbents. Analytical equations are derived to describe the evolution of conversion with the cycle number from a unifying model based on the balance between surface area loss due to sintering in the looping-calcination stage and surf...

CO2 recovery from CPU vent by Ca-looping process

One key unit operation in oxyfuel power plants is the CO2 purification unit (CPU), expected to be needed in most of oxyfuel installations to reduce the content of non-condensable gases (mainly O2, N2 and Ar), originated from the oxidant excess required for the combustion, air in-leakages and the non-100% purity of the O2 produced in the cryogenic ASU. Auto-refrigerated cryogenic processes are t...

study of cohesive devices in the textbook of english for the students of apsychology by rastegarpour

this study investigates the cohesive devices used in the textbook of english for the students of psychology. the research questions and hypotheses in the present study are based on what frequency and distribution of grammatical and lexical cohesive devices are. then, to answer the questions all grammatical and lexical cohesive devices in reading comprehension passages from 6 units of 21units th...