Hydrodynamic characteristics in a pilot-scale cold flow model for chemical looping combustion

Chemical looping combustion (CLC) is the most reliable carbon capture technology for curtailing CO2 insertion into the atmosphere. This paper presents the cold flow simulation results necessary to understand the hydrodynamic viability of the fast-fluidized bed air reactor. Hematite is selected as an oxygen carrier due to its easy availability and active nature during the reactions. The dense discrete phase model (DDPM) approach using the commercial software Ansys Fluent is applied in the simulation. An accurate and stable solution is achieved using the second-order upwind numerical scheme. A pressure difference of 150 kPa is obtained between the outlet and inlet of the selected air reactor, which is necessary for the movement of the particle. The stable circulating rate of hematite is achieved after 28 s of particle injection inside the air reactor. The results have been validated from the experimental results taken from the literature.

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Full-loop simulation of a 1 MWth pilot-scale chemical looping combustion system

Chemical Engineering Science ◽

10.1016/j.ces.2021.117301 ◽

2021 ◽

pp. 117301

Author(s):

Junjie Lin ◽

Kun Luo ◽

Chenshu Hu ◽

Liyan Sun ◽

Jianren Fan

Keyword(s):

Pilot Scale ◽

Chemical Looping Combustion ◽

Chemical Looping ◽

Combustion System

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TRANSIENT COLD FLOW SIMULATION OF A MOVING BED AIR REACTOR FOR CHEMICAL LOOPING COMBUSTION

International Journal of Energy for a Clean Environment ◽

10.1615/interjenercleanenv.2018024331 ◽

2017 ◽

Vol 18 (4) ◽

pp. 387-399

Author(s):

Mengqiao Yang ◽

Ramesh K. Agarwal

Keyword(s):

Flow Simulation ◽

Chemical Looping Combustion ◽

Chemical Looping ◽

Moving Bed ◽

Cold Flow

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One Based Magnetic Oxygen Carrier Solid Fuel Chemical Looping Combustion System Simulation

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.800.454 ◽

2013 ◽

Vol 800 ◽

pp. 454-458

Author(s):

Wen Yan Li ◽

Ming Zhong Gao

Keyword(s):

Fluid Dynamics ◽

Computational Fluid Dynamics ◽

Oxygen Carrier ◽

Chemical Looping Combustion ◽

Chemical Looping ◽

Combustion System ◽

Cold Flow ◽

Fundamental Understanding ◽

Computational Fluid Dynamics Cfd ◽

Scientific Significance

In this paper, Computational Fluid Dynamics (CFD) was used to simulate the magnetic device for the separation of Fe-base oxygen carrier in chemical-looping combustion system. The simulation was based on the Euler multiphase flow model and the k-ε turbulence model, which uses UDF programming to increase volume source phase. Here, commercial computational fluid dynamics software fluent platform was used to build the air reactor cold flow mathematical model, magnetic field under the conditions of different flow conditions were added for separating the Fe3O4 and Fe2O3. And the simulation results has an important understanding of the process of scientific significance, and will promote the fundamental understanding and applications of the Fe-base oxygen carrier.

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