DOE-GO-14154-1 OHIO FINAL report Velocys 30Sept08

Terry J. Mazanec

关键词: CAPITAL;    CATALYSTS;    ECONOMICS;    ETHANE;    ETHYLENE;    MANAGEMENT;    MASS TRANSFER;    OXIDATION;    OXYGEN;    POTENTIAL ENERGY;    PRODUCTION;    SENSITIVITY;    STEAM;    TARGETS;    TRANSPORT;    WASTES Microchannel;    catalytic ethane oxidation;    ethylene;   

DOI  :  10.2172/938780
RP-ID  :  DOE-GO-14154-1
PID  :  OSTI ID: 938780
Others  :  TRN: US200902%%871

学科分类：能源（综合）

美国|英语

来源: SciTech Connect

【 摘 要 】

The overall goal of the OHIO project was to develop a commercially viable high intensity process to produce ethylene by controlled catalytic reaction of ethane with oxygen in a microchannel reactor. Microchannel technology provides a breakthrough solution to the challenges identified in earlier development work on catalytic ethane oxidation. Heat and mass transfer limitations at the catalyst surface create destructively high temperatures that are responsible for increased production of waste products (CO, CO2, and CH4). The OHIO project focused on microscale energy and mass transfer management, designed to alleviate these transport limitations, thereby improving catalyst selectivity and saving energy-rich feedstock. The OHIO project evaluated ethane oxidation in small scale microchannel laboratory reactors including catalyst test units, and full commercial length single- and multi-channel reactors. Small scale catalyst and single channel results met target values for ethylene yields, demonstrating that the microchannel concept improves mass and heat transport compared to conventional reactors and results in improved ethylene yield. Earlier economic sensitivity studies of ethane oxidation processes suggested that only modest improvements were necessary to provide a system that provides significant feedstock, energy, and capital benefits compared to conventional steam ethane cracking. The key benefit derived from the OHIO process is energy savings. Ethylene production consumes more energy than any other U.S. chemical process.1 The OHIO process offers improved feedstock utilization and substantial energy savings due to a novel reaction pathway and the unique abilities of microchannel process technology to control the reaction temperature and other critical process parameters. Based on projected economic benefits of the process, the potential energy savings could reach 150 trillion Btu/yr by the year 2020, which is the equivalent of over 25 million barrels of oil.