Low Cost Air Separation Process for Gasification Applications


Absorption Process
Absorption Process
TDA Research, Inc.
Website:  TDA Research, Inc.
Award Number:  FE0026142
Project Duration:  10/01/2015 – 11/30/2018
Total Award Value:  $1,600,000
DOE Share:  $1,280,000
Performer Share:  $320,000
Technology Area:  Gasification Systems
Key Technology:  Air Separation
Location:  Wheat Ridge, Colorado

Project Description

TDA Research, Inc. (TDA), in collaboration with the University of California – Irvine, the University of Alberta, and the Gas Technology Institute, will develop a new chemical absorbent-based air separation process that can deliver low-cost oxygen to integrated gasification combined cycle power plants. The specific objectives of the work are to increase the technical maturity and commercial viability of the new absorbent-based air separation technology by (1) demonstrating continuous oxygen generation in a prototype test system and (2) carrying out a high fidelity process design and economic analysis. The TDA prototype unit will consist of three fixed-bed reactors, which can generate a minimum of 1 kg/hour of oxygen on a continuous basis. The system will be capable of stand-alone operation, treating up to 12 normal cubic meter per hour air at different inlet pressures. In a series of tests, the research team will validate the results from the absorption model and computational fluid dynamics simulations and conduct multiple-cycle tests under optimum operating conditions, delivering a high purity oxygen product. This project leverages research from previous DOE contracts DE-FG02-05ER84216, DE-FG02-07ER84677, and DE-FE0024060.

Project Benefits

The new sorbent used in the TDA absorbent-based air separation system operates at high temperature, eliminating the thermodynamic inefficiencies inherent in conventional cryogenic air separation units. Unlike the sorbents used in commercial pressure swing adsorption systems, this sorbent selectively removes oxygen (not nitrogen), which enables effective utilization of the large amounts of energy in the high-pressure oxygen-depleted stream. As a result, the new air separation system is highly efficient and delivers a low cost oxygen product.

Contact Information

Federal Project Manager 
Diane Revay Madden: diane.madden@netl.doe.gov
Technology Manager 
K David Lyons: k.lyons@netl.doe.gov
Principal Investigator 
Gokhan Alptekin: galptekin@tda.com

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