Technologies for Improved Refinery Gas Utilization

摘要

The trend of processing more heavy and sour crudes, the shift in demand away fromrngasoline towards more distillate, and more stringent fuel qualities change the fuel andrnhydrogen balances in most refineries. Finding the right solution to managing fuel gas andrnhydrogen requirements has become essential for refineries to remain profitable. With arncombination of proven and new technologies, Praxair is well positioned to address refineryrn“fuel long” situations. The refinery gas value is higher for hydrogen generation than forrngenerating power and slightly lower than the value for using it as chemical feedstock.rnCryogenic processing of refinery fuel gas to recover valuable products (hydrogen and LPG) isrnalso a viable option, especially when it is integrated with post-purification technologies (e.g.rnPSA). Praxair has also developed a patented refinery gas processor based on a short contactrntime catalyst that can reliably process refinery gas and convert it into SMR suitable feed. Wernwill discuss how different technologies are suited to different refinery gas streams and how tornoptimize recovery given differing energy and capital cost constraints.