China's largest acrylic producer, Zhejiang Satellite Energy Co., Ltd, recently selected Siemens to provide a reactor effluent compressor train for Phase II of its propane dehydrogenation (PDH) plant in Pinghu City in China's Zhejian province. The dual-casing compressor train, scheduled for installation in late 2018, consists of two Siemens STC-SH single-shaft compressors driven by a Siemens SGT-750 industrial gas turbine. Plant commissioning is scheduled for early 2019.
Siemens will deliver a 41-MW SGT-750 gas turbine, rated at approximately 41 percent efficiency to drive two Siemens STC-SH single-shaft compressors for Phase II of Zhejiang Satellite Energy Co., Ltd.'s propylene dehydration plant in Pinghu City, China.
This order follows the Satellite Phase I PDH project, where Siemens supplied a compressor train consisting of two STC-SH (14) compressors and a SGT-700 gas turbine in 2013. The Phase II project represents the first downstream application for Siemens SGT-750 gas turbine. The turbine's advanced fuel flexibility and low lifecycle cost due to high reliability and ease of maintenance were critical factors in Zhejiang Satellite's decision, along with their past success with Siemens' technology.
"The Phase II PDH project has a tight schedule and once again, Siemens' project team has worked hard to support us and meet the requirements for this project," said Mr. Shen Zhiming, Deputy General Manager of Satellite Energy Co., Ltd, and Project Manager for the Phase II PDH project. "It is a pleasure to again work with such a professional, world-class provider following our successful completion of Phase I."
The SGT-750 is optimized for direct drives without intermediate gears and has a rotational speed of 6,100 revolutions per minute. Further to this, the SGT-750 gas turbine enables long intervals between maintenance events, which increases production uptime and reduces lifecycle cost.
Siemens STC-SH single-shaft compressor offers a robust, dependable design with standardized components for ease of maintenance. The compressor is particularly well suited for petrochemical process applications with a wide range of volume flows.
Compared with steam turbine-driven or electric motor-driven compressor solutions more commonly used in PDH processes, gas turbine-driven solutions are able to use waste gas generated in the process. This allows for significant fuel cost savings resulting in lower lifecycle costs. Siemens is the only manufacturer with proven experience burning waste gas with dry low emission (DLE) technology.
"The high fuel flexibility and low emissions of our SGT-750 machines were also crucial considerations for this project," explains Girish Garg, vice president, New Equipment for the Dresser-Rand business' Middle East, China and Asia Pacific region. "Despite the high concentration of ethane in the gas used for firing, the SGT-750 achieves low nitrogen oxide emissions of only 25 parts per million."
For more information on Siemens compression business, please see www.siemens.com/compression
For more information on the SGT-750 industrial gas turbine, please see www.siemens.com/sgt-750
(Berlin and Munich) is a global technology powerhouse that has stood for engineering excellence, innovation, quality, reliability and internationality for more than 165 years. The company is active in more than 200 countries, focusing on the areas of electrification, automation and digitalization. One of the world's largest producers of energy-efficient, resource-saving technologies, Siemens is a leading supplier of efficient power generation and power transmission solutions and a pioneer in infrastructure solutions as well as automation, drive and software solutions for industry. The company is also a leading provider of medical imaging equipment – such as computed tomography and magnetic resonance imaging systems – and a leader in laboratory diagnostics as well as clinical IT. In fiscal 2016, which ended on September 30, 2016, Siemens generated revenue of €79.6 billion and net income of €5.6 billion. At the end of September 2016, the company had around 351,000 employees worldwide. Further information is available on the Internet at www.siemens.com