In Situ Gasification Chemical Looping Combustion of Coal Using the Mixed Oxygen Carrier of Natural Anhydrite Ore and Calcined Limestone
-
Zheng Min
and
Shen Laihong
Abstract
The utilization of CaSO4-based oxygen carrier suffers the deactivation problem caused by sulphur loss. To capture the gas sulphides and to improve the stability of CaSO4 oxygen carrier, calcined limestone was introduced into the fuel reactor of Chemical Looping Combustion (CLC). Kinetic behaviors and thermodynamics of the combined process of coal gasification and oxygen carrier reduction using the mixed oxygen carrier CaSO4-CaO under different atmospheres were investigated. The effects of reaction temperature, gasification intermediate, and molar ratio of CaO to CaSO4 on gas sulphide emissions, CO2 generation, and distribution of other gas emissions and characterization of solid products are taken into account. It is found the CaO-based additive evidently suppressed the sulphur emissions, and improved both chemical reaction rate and CO2 generation efficiency. The sulfation products, both CaS and CaSO4, can be used as oxygen carrier later. The optimum reaction parameters are evaluated and obtained in terms of gas sulphide emissions, CO2 capture, other gas releases and maintenance of oxygen transfer capability.
Award Identifier / Grant number: ‘51174105 ’, ‘51276037’, ‘51306084’, ‘51374004’
Funding statement: Scientific Research Fund of Kunming University of Science and Technology, (Grant/Award Number: ‘14118758’) National Natural Science Foundation of China, (Grant/Award Number: ‘51174105 ’, ‘51276037’, ‘51306084’, ‘51374004’)
Acknowledgement
This work was supported by the National Natural Science Foundation of China (51306084, 51276037, 51174105 and 51374004) and Scientific Research Fund of Kunming University of Science and Technology (14118758).
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©2016 by De Gruyter
Articles in the same Issue
- Frontmatter
- Research Articles
- Adsorption Properties of Arc Produced Multi Walled Carbon Nanotubes for Bovine Serum Albumin
- Experimental Study and Mathematical Modeling of Propane-SCR-NOx Using Group Method of Data Handling and Artificial Neural Network
- Experimental and Kinetic Study of Esterification of Acrylic Acid with Ethanol Using Homogeneous Catalyst
- Synthesis of Butyl Acetate in a Membrane Reactor in a Flow-Through Mode
- Heat Transfer Enhancement Around a Cylinder – A CFD Study of Effect of Corner Radius and Prandtl Number
- CFD Modeling with Experimental Validation of the Internal Hydrodynamics in a Pilot-Scale Slurry Bubble Column Reactor
- Computational Simulation of Mixing Performance in the Circulating Jet Mixing Tank
- In Situ Gasification Chemical Looping Combustion of Coal Using the Mixed Oxygen Carrier of Natural Anhydrite Ore and Calcined Limestone
- Effect of L/D Ratio on Phase Holdup and Bubble Dynamics in Slurry Bubble Column using Optical Fiber Probe Measurements
Articles in the same Issue
- Frontmatter
- Research Articles
- Adsorption Properties of Arc Produced Multi Walled Carbon Nanotubes for Bovine Serum Albumin
- Experimental Study and Mathematical Modeling of Propane-SCR-NOx Using Group Method of Data Handling and Artificial Neural Network
- Experimental and Kinetic Study of Esterification of Acrylic Acid with Ethanol Using Homogeneous Catalyst
- Synthesis of Butyl Acetate in a Membrane Reactor in a Flow-Through Mode
- Heat Transfer Enhancement Around a Cylinder – A CFD Study of Effect of Corner Radius and Prandtl Number
- CFD Modeling with Experimental Validation of the Internal Hydrodynamics in a Pilot-Scale Slurry Bubble Column Reactor
- Computational Simulation of Mixing Performance in the Circulating Jet Mixing Tank
- In Situ Gasification Chemical Looping Combustion of Coal Using the Mixed Oxygen Carrier of Natural Anhydrite Ore and Calcined Limestone
- Effect of L/D Ratio on Phase Holdup and Bubble Dynamics in Slurry Bubble Column using Optical Fiber Probe Measurements
