Operation status of GSP furnace

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The Siemens SFG500MW gasifier was successfully put into industrial use. On December 31, 2010, the Coal-Based Olefins Project (NCPP) of Shenhua Ningxia Coal Industry Group Company utilized Siemens’ GSP gasification technology together with the SFG500MW gasifier supplied by Siemens (with a coal input of 2,000 tons per day). The synthetic gas produced by this gasifier was used in subsequent processing stages to yield high-quality methanol, thereby enabling the completion of the entire process flow for the olefins project. This success marks the successful industrial application in China of the world’s first Siemens SFG500MW gasifier. The project with an annual production capacity of 500,000 tons of coal-based olefins is a key project under the 11th Five-Year Plan, undertaken by Shenhua Ningxia Coal. It represents the largest industrial project in Ningxia’s history, as well as the biggest coal chemical project currently under construction in the Ningdong Energy and Chemical Industry Base. As a key unit of the olefin project, the gasification island consists of 5 Siemens SFG 500MW gasifiers that are used to gasify local coal from Ningdong, producing 1.67 million tons of methanol per year; the final product is polypropylene. Construction of this project began in April 2008. By early November 2010, the gasification unit had met the requirements for testing, and within less than 2 months, the important milestone of completing the entire process chain was achieved, setting a new record for the use of gasifiers of this scale. Through debugging, it was verified that the Siemens GSP gasification technology boasts important process advantages such as simple operation, rapid ignition, easy start-up and shutdown, efficient dense-phase transportation, as well as ease of system maintenance and debugging. The gasifier operated smoothly as a whole; it had been running continuously for over 133 hours before it was shut down voluntarily on January 1, 2011, for New Year’s maintenance. Overall, the SFG500MW gasifier and other key equipment are based on a reliable engineering design; the convenient control of the combined burners as well as their adaptability to various operating conditions are all excellent. At the same time, key processes such as the ignition of the gasification furnace, material feeding, gasification, slag accumulation on the water wall, and slag removal have all been validated through engineering applications. The achievement of the key goal of long-term stable operation across the entire process for this project is now within reach.