| The project is service for Anhui Huayi Chemical ltd..co, which get the permit to set up the600000tons of methanol project at Anhui Economic Development Zone, Mainly in accordance with the factory’s design requirements, provide high purity oxygen and nitrogen for the factory, primarily supply the gas oxygen(80000Nm3/h) and gas nitrogen(20000Nm3/h). The main purpose of this paper is utilizing the Praxair’s patented technology to build a set of reliable, efficient energy saving and pro-environmental control system for the plant. The project is currently the world’s largest single set of air separation project and also is one of the biggest projects for Praxair, powered by steam turbine compressor. Compared to the conventional electrically driven compressor, the technology with steam turbine compressor, can greatly reduce the energy consumption. After driving the steam turbine, the steam chill-down as boiler water through the turbine condensate recovery system, and to regenerate the superheated steam, greatly reducing the emissions and water consumption.And introduction of oxygen internal compression process, the most advanced proprietary-Praxair main cooling design and high efficiency distillation hydrogen-free argon extraction technology, replacing the traditional Hydrogenated argon extraction technology, efficiently recover the argon in the air and achieve the integrated treatment of waste gas, waste water. As a control system engineer for the project, I’m in charge of the whole plant instrumentation selection and control system(hardware) set-up and commission, to launch a reliable and efficient plant control system. Because China is now the world’s largest emerging economies, the project is of profound significance for the company, and also provide a good example for the development of domestic air separation industry. |
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