A comparative process simulation study of Ca—Cu looping involving post-combustion CO<sub>2</sub> capture

Xiaoyu Wang; Haibo Zhao; Mingze Su

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A comparative process simulation study of Ca—Cu looping involving post-combustion CO₂ capture

Process Systems Engineering and Process Safety | Updated：2026-01-06

- A comparative process simulation study of Ca—Cu looping involving post-combustion CO₂ capture
- Chinese Journal of Chemical Engineering Vol. 28, Issue 9, Pages: 2382-2390(2020)
- Affiliations：
  
  State Key Laboratory of Coal Combustion, School of Energy and Power Engineering, Huazhong University of Science and Technology,Wuhan,China,430074
- Author bio：
- Funds：
- DOI：
  CLC：
- Published：2020
- Accepted：
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capture[J]. 中国化学工程学报, 2020, 28(9): 2382-2390.
DOI：

capture[J]. 中国化学工程学报, 2020, 28(9): 2382-2390. DOI：

摘要

Abstract

This work presents a simulation study of several Ca—Cu looping variants with CO

capture

aiming at both parameter optimization and exergy analysis of these Ca—Cu looping systems. Three kinds of Ca—Cu looping are considered: 1) carbonation-calcination/reduction-oxidation; 2) carbonation-oxidation-calcination/reduction and 3) carbonation/oxidation-calcination/reduction. A conventional Ca looping is also simulated for comparison. The influences of the calcination temperature on the mole fractions of CO

and CaO at the calciner outlet

the CaCO

flow rate on the carbonator performance and the Cu/Ca ratio on the calciner performance are analyzed. The second kind of Ca—Cu looping has the highest carbonation conversion. At 1 × 10

Pa and 820 °C

complete decomposition of CaCO

can be achieved in three Ca—Cu looping systems

while the operation condition of 1 × 10

840 °C is required for the conventional Ca looping system. Furthermore

the Cu/Ca molar ratio of 5.13-5.19 is required for the Ca—Cu looping. Exergy analyses show that the maximum exergy destruction occurs in the calciner for the four mod

es and the second Ca—Cu looping system (i.e.

carbonation-oxidation-calcination/reduction) performs the highest exergy efficiency

up to 65.04%

which is about 30% higher than that of the conventional Ca looping.

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A comparative process simulation study of Ca—Cu looping involving post-combustion CO2 capture

DOI：

摘要

Abstract

关键词

Keywords

references

A comparative process simulation study of Ca—Cu looping involving post-combustion CO₂ capture