Co2 Capture and Mineralization by Semi-Dry Gas-Solid Process in Circulating Fluidized Bed (Cfb) Reactor

The paper is focused on the present situation and the development of large-scale circulating fluidized bed (CFB) boilers. Several developed technology of CFB such as supercritical and ultra supercritical pressure CFB boilers for power plants, oxy-fuel CFB boiler for CO2 capture and high-density circulating fluidized bed gasifier for advanced IGCC/IGFC are introduced in this paper.

Download Full-text

Developments in fluidized bed conversion of solid fuels

Thermal Science ◽

10.2298/tsci150703135l ◽

2016 ◽

Vol 20 (suppl. 1) ◽

pp. 1-18 ◽

Cited By ~ 9

Author(s):

Bo Leckner

Keyword(s):

Fluidized Bed ◽

Co2 Capture ◽

Circulating Fluidized Bed ◽

Fuel Combustion ◽

Solid Fuels ◽

Important Development ◽

Bubbling Beds ◽

Fluidized Bed Boilers ◽

Development Tasks

A summary is given on the development of fluidized bed conversion (combustion and gasification) of solid fuels. First, gasification is mentioned, following the line of development from the Winkler gasifier to recent designs. The combustors were initially bubbling beds, which were found unsuitable for combustion of coal because of various drawbacks, but they proved more useful for biomass where these drawbacks were absent. Instead, circulating fluidized bed boilers became the most important coal converters, whose design now is quite mature, and presently the increments in size and efficiency are the most important development tasks. The new modifications of these conversion devices are related to CO2 capture. Proposed methods with this purpose, involving fluidized bed, are single-reactor systems like oxy-fuel combustion, and dual-reactor systems, including also indirect biomass gasifiers.

Download Full-text

GREENHOUSE GAS EMISSIONS CONTROL BY OXYGEN FIRING IN CIRCULATING FLUIDIZED BED BOILERS: PHASE II--PILOT SCALE TESTING AND UPDATED PERFORMANCE AND ECONOMICS FOR OXYGEN FIRED CFB WITH CO2 CAPTURE

10.2172/842821 ◽

2004 ◽

Cited By ~ 3

Author(s):

Nsakala ya Nsakala ◽

Gregory N. Liljedahl ◽

David G. Turek

Keyword(s):

Greenhouse Gas Emissions ◽

Greenhouse Gas ◽

Fluidized Bed ◽

Phase Ii ◽

Co2 Capture ◽

Circulating Fluidized Bed ◽

Pilot Scale ◽

Emissions Control ◽

Gas Emissions ◽

Fluidized Bed Boilers

Download Full-text

New CO2 Capture Process with Gas–Liquid–Solid Three-Phase Circulating Fluidized Bed

Industrial & Engineering Chemistry Research ◽

10.1021/ie401424c ◽

2013 ◽

Vol 52 (45) ◽

pp. 15905-15911 ◽

Cited By ~ 3

Author(s):

Kangtao Hu ◽

Jinghao Liu ◽

Hairui Yang ◽

Hai Zhang ◽

Qing Liu

Keyword(s):

Fluidized Bed ◽

Co2 Capture ◽

Circulating Fluidized Bed ◽

Capture Process ◽

Three Phase

Download Full-text

Simulation-Based Design and Economic Evaluation of a Novel Internally Circulating Fluidized Bed Reactor for Power Production with Integrated CO2 Capture

Processes ◽

10.3390/pr7100723 ◽

2019 ◽

Vol 7 (10) ◽

pp. 723 ◽

Cited By ~ 5

Author(s):

Jan Hendrik Cloete ◽

Mohammed N. Khan ◽

Schalk Cloete ◽

Shahriar Amini

Keyword(s):

Economic Evaluation ◽

Fluidized Bed ◽

Co2 Capture ◽

Gas Turbines ◽

Circulating Fluidized Bed ◽

Scale Up ◽

Fluidized Bed Reactor ◽

Power Production ◽

Simulation Based Design ◽

Simulation Based

Limiting global temperature rise to well below 2 °C according to the Paris climate accord will require accelerated development, scale-up, and commercialization of innovative and environmentally friendly reactor concepts. Simulation-based design can play a central role in achieving this goal by decreasing the number of costly and time-consuming experimental scale-up steps. To illustrate this approach, a multiscale computational fluid dynamics (CFD) approach was utilized in this study to simulate a novel internally circulating fluidized bed reactor (ICR) for power production with integrated CO2 capture on an industrial scale. These simulations were made computationally feasible by using closures in a filtered two-fluid model (fTFM) to model the effects of important subgrid multiphase structures. The CFD simulations provided valuable insight regarding ICR behavior, predicting that CO2 capture efficiencies and purities above 95% can be achieved, and proposing a reasonable reactor size. The results from the reactor simulations were then used as input for an economic evaluation of an ICR-based natural gas combined cycle power plant. The economic performance results showed that the ICR plant can achieve a CO2 avoidance cost as low as $58/ton. Future work will investigate additional firing after the ICR to reach the high inlet temperatures of modern gas turbines.

Download Full-text