Coal-Fueled Pressurized Chemical Looping Combustion with a Spouting Fluidized Bed


Schematic diagram of the PCLC
Schematic diagram of the PCLC
University of Kentucky Research Foundation
Website:  University of Kentucky
Award Number:  FE0025098
Project Duration:  09/01/2015 – 09/30/2018
Total Award Value:  $1,000,779
DOE Share:  $699,556
Performer Share:  $301,223
Technology Area:  Advanced Combustion Systems
Key Technology:  Chemical Looping Combustion
Location:  Lexington, Kentucky

Project Description

The University of Kentucky Center for Applied Energy Research (UK-CAER) will assess and validate an advanced coal-fueled pressurized chemical looping combustion (PCLC) technology that adopts a novel spouted bed to avoid OC (oxygen carrier) agglomeration, improve plant efficiency and reduce process complexity. The scope of the project will be the designing, fabricating, and testing of an integrated coal-fueled pressurized facility at lab scale, which uses an industrial byproduct-based oxygen carrier as a cost-effective cycling material, pulverized coal as a feedstock, and a novel spouted bed reactor as the reducer. Research will include collecting various data and information to address the major technical gaps of solid-fueled PCLC technology. The project will be conducted over two budget periods. Budget Period 1 consists of process design, modification of the existing novel spouted bed facility at UK-CAER, and cold commissioning prior to hot testing. Budget Period 2 includes hot testing, data collection, and performance evaluation of the PCLC facility. Trimeric Corporation will perform a techno-economic assessment of a commercial unit. This work builds on previous DOE contract DE-FE-0024000.

Project Benefits

The UK-CAER PCLC concept has an estimated overall thermal efficiency of approximately 43 percent of higher heating value and meets DOE cost and carbon dioxide (CO2) capture targets. Advantages of the proposed process include a noticeable reduction to cost of electricity with CO2 capture due to high overall efficiency and the avoidance of a costly air separation unit, coal pyrolyzer, and tar cracker without compromising on the concern of oxygen carrier agglomeration. Operating under elevated pressure will not only improve the gasification rate of solid fuels, but also contribute to a reduction in reactor vessel sizes and solids inventory, and therefore to the reduction of capital cost. The PCLC system produces a higher discharge pressure of the CO2 stream, which will reduce the energy consumption of downstream CO2 compression.

Contact Information

Federal Project Manager 
Steven Markovich:
Technology Manager 
John Rockey:
Principal Investigator 
Kunlei Liu:

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