SMS SIEMAG
Stainless steelmaking in Taiwan with a world first in environmental concepts
Fuxin Special Steel orders a Stainless steel plant with energy recovery from SMS Siemag
Fuxin Special Steel Co. Ltd., Taiwan, has placed an order with SMS Siemag, Germany, for the planning and supply of a steelworks for the production of stainless steel slabs. It will be the first stainless steel plant in the world to utilize the waste heat from the AOD converter and the electric arc furnace.
The new construction project at the Zhangzhou location in the southeast of the Chinese province of Fujian comprises plant and equipment for stainless steelmaking on a scrap basis via the Duplex route, a continuous slab caster and comprehensive environmental technology systems for gas cleaning and energy recovery. The works is designed for a production of 720,000 t of steel per year. Commissioning is scheduled for the end of 2012.
The SMS Siemag supply scope comprises the complete basic and detailed engineering, the supply of mechanical and electrical core components, the X-Pact electrical and automation package including the process automation (Level 1) and the metallurgical process models (Level 2), all supplied items, and the supervision of erection and commissioning.
The X-Melt steel plant consists of a 160- t EAF with tapping spout, a 180-t AOD-L converter and a 180-t ladle furnace. Converter vessel changing is performed by using the proven changing car concept. This enables the converter vessel to be changed twice as quickly as with the conventional method.
The steel plant will satisfy stringent environmental protection standards through the technology employed. The primary emissions will be extracted via cooled stacks and fed to bag filter houses. The EAF and the AOD converter are to be provided with enclosures (‘’dog houses’’) for efficient capture of the dust-laden secondary emissions. Additional dust produced will be captured at emission points and extracted. The gas cleaning systems are designed for filtering more than 2.3 million cubic meters of air per hour.
The steelworks will be equipped with an innovatory X-e energy recovery system, utilizing the thermal energy of the hot weste gases from the EAF and AOD in order to produce superheated steam.
The two energy recovery systems supply 36 t of saturated steam per hour. This will be fed into the works’ steam network for various technical purposes. The customer will benefit from savings not only in energy but also in CO2 emissions.
The range of grades produced by the steelworks comprises ferritic, austenitic and martensitic stainless steels, which are processed on the X-Cast continuous caster to provide slabs of thickness 200 or 220 mm. During casting, the width can be set steplessly from 800 to 1,600 mm.
The plant is equipped with Intelligent Slab Casting (ISC) modules. These include the hydraulically powered resonance oscillator, the position-controlled CYBERLINK segments and the metallurgical Dynamic Soildification Control (DSC) process model for control of the secondary cooling. These, together with the electro-magnetic strand stirrer (EMS), a development by SMS Siemag and SMS Elotherm, enable the production of slabs to a very high degree of quality.
The works layout already makes provision for a second expansion stage, allowing production capacity to be doubled.
Fuxin Special Steel Co. Ltd, is part of the Formosa Plastics Group, a private company group with head office in Taipeh, Taiwan.
X-Melt and X-Cast are SMS Siemag trademarks from the Steelmaking Plant and Continuous Casting Technology Division. They are a brand name for plants and technologies that set standards for the economical production of hogh-quality steel products.
X-e is an SMS Siemag trademark from the Energy and Environmental Technology Specialist Department. It is the brand name for plants and technologies that make efficient use of raw materials and energy in order to achieve a balanced relationship between ecology and economy.
SMS SIEMAG
Duplex RH TOP plant at Bei Tai Iron & Steel successfully commissioned
Bei Tai Iron & Steel has successfully commissioned the duplex RH- TOP plant delivered by SMS Mevac, Germany. Bei Tai Iron &Steel is a company of the Benxi Beijing Iron & Steel Group Co., Ltd., located in Benxi, China.
The RH-TOP plant is designed to treat heats with a nominal weight of 135 t. Each treatment position is equipped with a hydraulic ladle lifting system, a metallurgical TOP lance, a system for quick charging of alloying elements, and a vacuum lock system.
The vacuum is achieved using a steam-ejector vacuum pump with variable pressure reduction for optimized process control, which also ensures low consumptions of steam and condenser cooling water.
The new unit will mainly be used for the production of flat products.
The scope includes the complete basic engineering, delivery of key components, the complete hardware and software for the process computer as well as supervision of erection and commissioning.
No comments:
Post a Comment