Siemens Energy successfully obtained orders for two gas turbine driven axial compressors for China's first propane dehydrogenation (PDH) project. The customer is Tianjin Haohai Chemical Group Co., Ltd. (Suihua), which specializes in caustic soda, organic chemicals, inorganic chemicals, precision chemicals, rubber and plastics processing industries, and biochemical industries. Siemens will provide two sets of axial compressors, each with the world's largest flow, and powered by the SGT-700 gas turbine. Suihua's new plant adopts Catofin dehydrogenation technology from Lums of the United States with a capacity of 600,000 tons per year. It is currently the world's largest PDH plant.
The new plant will be used to produce propylene, a raw material for the production of plastics. The feed air (propane = C3H8) will be dehydrogenated to propylene (C3H6). At present, the demand for propylene in Asia is growing very fast. The construction of the PDH project will benefit the development of China's autonomous propylene production and its downstream industries.
“In order to better improve the operational efficiency of the Suihua PDH project, the compression solution we provide is the most efficient axial compressor with the most efficient drive equipment.†Siemens (China) Co., Ltd. Energy Business Oil & Gas Group General Manager Luo Zhiyu said, "As a loyal partner of China's chemical industry, Siemens will continue to bring the most advanced and environmentally friendly technologies to the Chinese market and contribute to the development of China's chemical industry."
Siemens' compression solutions for the new plant include two axial compressors (STC-SX450-6V6) driven by Siemens SGT-700 industrial gas turbines. Supplementary systems including control systems, dual-fuel systems, lube units and air filters also belong to Siemens' scope of supply. Both compressors have the world's largest flow capacity and can compress approximately 700,000 cubic meters of air per hour from atmospheric pressure to 2.4 bar of exhaust pressure. Gas turbine fuel is supplied by a dual-fuel system. Its source is mainly natural gas in pipelines or factory feed gas. The main component of these feed gases is propane.
“The signing of this contract is a milestone for Siemens. China's emerging PDH market is growing rapidly. Siemens, the world’s leading manufacturer of turbine equipment, has established a comprehensive compressor portfolio that has been established in this market. A good foundation,†said Kang Junfu, general manager of Siemens Oil & Gas Turbine Equipment Business Unit.
STAINLESS STEEL Aws E308-16 Welding Electrodes
DESCRIPTION:
AWS E308-16 weld metal(19Cr-9Ni) is austenite structure, it has excellent mechanical properties and shows good resistance to intergranular corrosion.
It can be used for all position welding with excellent performances: Stable arc, small spatters, good appearance of weld. And also the welding electrodes shows arc, small spatters, good appearance of weld. And also the welding electrodes shows good heat-resistance character, not easy to turn red and gas porosity is not produced.
Application:
It can be used for welding 18Cr-8Ni(A1S1304),A1S1301, SUS308.etc.
Attention:
Before welding, the welding electrodes should be baked at the temperature of 300-350 ℃ for one hour.
Using stainless steel brush to clean the weld seam, in order to avoid scrap iron entering and affect its quality.
Notes on usage:
1. Clean up the contaminations on the base metal groove and pass to pass
To pass with stainless steel brush.
2.Maintaining short arc length as possible is highly recommend.
While welding with weave method, moving range should be
Controlled within 2.5 times of the wire`s dia.
2. Dry the electrodes at 250-300 ℃ for 60 minutes before use.
Take out consumables for half day consumption and keep in the enviroment
At 100-150 ℃ during welding process.
3. Use lower current to prevent from cracking and minimize base metal dilution.
AWS E308-16 Welding Electrodes
Aws E308-16 Welding Electrodes,308-16 Welding Electrode,308-16 Welding Rod,E308-16 Welding Electrodes
Dingzhou Jinlong Metal Production Co., Ltd. , http://www.weldingelectrodefactory.com