Permselective Membrane-based In-line Sulfur Monitoring System
Small Business Information
184 Cedar Hill Street, Marlborough, MA, 01752
AbstractAspen Systems proposes to develop a highly selective, high sensitivity and fast-response in-line sulfur monitoring system using an advanced membrane-based sensor technology. In Phase I, we developed advanced sol-gel synthesis route to fabricate solid zinc oxide coatings with desired crystalline structure on microporous ceramic membranes. Utilizing these sensors, we successfully produced MEMS sensor module to test the sulfur sensors in the simulated desulfurizer effluent gas streams. Most importantly, we clearly demonstrated the feasibility of measuring organic sulfur concentrations in simulated desulfurization process atmospheres by measuring changes in electrical resistivity of the sulfur sensors. In Phase II, we will further optimize sensor compositions to significantly increase the organic sulfur sensitivity and reduce the sensor's response time at a wide range of sensor operating temperatures. Furthermore, we will fine-tune the MEMS-based sensor architecture to significantly improve the durability and manufacturability of the sensor system. In addition, we will experimentally demonstrate the long-term durability by conducting a 100-hour performance test in tandem with a reformate desulfurization system. Our ultimate objective in Phase II is to develop universal sulfur sensors that can operate over a wide temperature range, from 400oC to 750oC, and respond to all organic sulfur compounds, including H2S.
* information listed above is at the time of submission.