Low-cost Oxygen (LCO) for Small-scale Modular Gasification Systems [electronic resource]

• Ngôn ngữ: eng
• Ký hiệu phân loại: 333.8 Subsurface resources
• Thông tin xuất bản: Washington, D.C. : Oak Ridge, Tenn. : United States. Office of the Assistant Secretary of Energy for Fossil Energy ; Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy, 2019
• Mô tả vật lý: Medium: ED : , digital, PDF file.
• Bộ sưu tập: Metadata
• ID: 267949
• Chủ đề: 1. 01 coal, lignite, and peat; 2. 20 fossil-fueled power plants; 3. 36 materials science; 4. Oxygen, perovskite, sorbent, gasification, heat integration, low cost oxygen, ceramic autothermal recovery, oxycombustion, small-scale power plants, modular power plants, vacuum pressure swing adsorption (vpsa), partial pressure swing adsorption, lscf sorbent

Tóm tắt

Development of a sorbent-based vacuum pressure swing adsorption oxygen production technology was undertaken. Newly developed perovskite ceramic sorbent materials have a higher O2 adsorption capacity, lower operating temperatures (550-600 �C vs 800-850 �C), and an order of magnitude faster desorption rate than those used in earlier development efforts. These performance advancements lead to substantial savings in capital investment and operational costs. Cost of producing oxygen using the new sorbents can be considerably lower than a cryogenic air separation unit. Development of these new sorbents and design and fabrication of a pilot demonstration unit (PDU) encompassed lab-scale work, bench-scale testing and development, demonstration-scale sorbent manufacturing, procurement of plant components, and final assembly and testing of the PDU. The goal of the project was to develop an advanced oxygen production technology based on improved perovskite ceramic sorbents that results in significantly lower oxygen cost compared to commercial state of the art technologies. The pilot demonstration unit was constructed and operated, but the performance of the scaled-up sorbent and the PDU was hindered by the mechanical problems with the system. When the problems are accounted for, the results show that the PDU would be able to produce 95% oxygen at a rate exceeding one ton per day. The same mechanical problems also mean that the PDU system was not fully optimized, which would increase the productivity as well.