GE Power. Smarter. Cleaner. Industry. Iron & Steel 2017 STEAM POWER SYSTEMS INDUSTRY PRODUCT CATALOG

Transcription

1 GE Power Smarter. Cleaner. Industry. Iron & Steel 2017 STEAM POWER SYSTEMS INDUSTRY PRODUCT CATALOG

2 PORTFOLIO AND OVERVIEW IRON & STEEL, NON-FERROUS AND MINING INDUSTRY SOLUTIONS GE has supplied air quality control solutions (AQCS) to the industry for more than 70 years. Tailored to industry needs, our cost-effective solutions minimize air pollution from ore to finished products, while increasing energy efficiency and recovery of waste heat to reduce the energy demand of the plant. Engineered Solutions GE has the engineering capabilities and the process specialists to deliver integrated solutions that are cost and energy efficient from the suction hoods to the stack. Reliable Operation Our systems have a proven track record with high reliability for minimized maintenance and continuous operation. 2

3 INTRODUCTION EXTRACTION RAW MATERIAL PREPARATION IRON MAKING Mining Secondary gas cleaning Blast Furnace Secondary ventilation Sintering Plant, DeSO x, DeNO x Secondary gas cleaning Heat Recovery Coke Oven Raw gas cleaning WESP, DeSO x Secondary gas cleaning STEEL MAKING Basic Oxygen Furnance Secondary ventilation Electric Arc Furnace, quenching, HF/HCL Dioxines removal Secondary ventilation Heat Recovery Refining Unit Secondary ventilation Environmental Compliance Our systems are designed to meet every requirement and we can always supply cost effective systems for compliance. Innovative Digital Capabilities Combining the strengths of GE s advanced technologies with our agile digital technologies we can help you achieve even better performance, greater efficiencies and improved reliability for both new plants and installed units. 3

4 I&S, NON-FERROUS AND MINING Engineered Solutions to Meet Industry Needs We provide full turnkey solutions to meet your air quality control system requirements that fulfill the most rigorous emission regulations. With our dedicated engineering resources, we integrate our customized solutions directly into your plant. Our products meet the requirements of the European Union Industrial Emissions Directive (IED) and conform to its current Best Available Technology (BAT) reference document. We tailor our solutions to your requirements, ensuring that the products we recommend precisely meet your specifications. We also ensure that they are installed with the minimum amount of disruption in the most cost-effective way possible. Primary Emissions Electric Arc Furnace primary emissions are controlled by a set of water-cooled ducts with robust design for high availability with efficient gas cooling. An adjustable sliding sleeve in the elbow duct allows air to be sucked into the system to dilute the primary gas and CO combustion in the post-combustion chamber. Secondary Ventilation We tailor hoods and ducts for secondary ventilation in areas for raw material handling or casting and pouring of pig iron and hot metal. We design the hoods for optimal and energy efficient gas collection using computational fluid dynamics. The layout is optimized for maximized collection efficiency. The gas collected is treated in Fabric Filters or ESPs for efficient particulate removal. 4

5 COMPLETE SOLUTIONS Hot Quenching Cost-Effective Emissions Control To treat PCDD/F, CO and VOC emissions, we combine a post combustion chamber with a hot quenching tower. This rapidly cools gases to below 250ºC after combustion and inhibits the novo-synthesis of PCDD/F. This technology reduces the need for extensive water-cooled ducting. We also supply forced draft coolers and radiant coolers (hair pin coolers) for primary gas cooling. Customized Enclosures for Noise Reduction We design and supply industry specific noise enclosures to dampen noise associated with melting and rotating equipment. These enclosures can be retrofitted to existing meltshops and adapted to your specific plant layout. NO x reduction through Selective Catalytic Reduction (SCR) Our SCR technology reduces emissions of NO x by adding ammonia or urea with the aid of a catalyst to form nitrogen and water. Our SCR systems are designed to meet a high degree of NO x removal (up to 95% removal efficiency) while guaranteeing low reagent consumption as well as low slip of ammonia to the atmosphere (2ppmv). This is achieved by leveraging GE s know-how in designing efficient reagent injection grids and employing in-house CFD capabilities. 5

6 I&S, NON-FERROUS AND MINING Technical Product Specifictions For particulate removal, we offer electrostatic precipitators (ESP) or fabric filters (FF). Before dedusting the primary and secondary flue gases can be mixed in the main duct. ESP performance can be boosted with pulse energisation or SO 3 injection to successfully reduce peak particulate emissions. Our fabric filters are specifically designed to meet the latest emission standards for the industry and can achieve particulate emissions as low as 1mg/Nm 3. We supply both reversed air and pulse jet type filter systems. Our pulse jet fabric filters have been designed to integrate the Optipow pulse jet valve that permits the use of longer filter bags (up to 10 meters long). As a result the overall footprint of the fabric filter can be minimized. Pulse jet fabric filters can be cleaned in on and off-line modes. Dry Electrostatic Precipitators (ESP) technical features Gas Flow Rate 10-2,000 m 3 /s Gas Temperature C Dust load Up to 2 g/nm³ Emission at ESP outlet mg/nm³ Removal efficiency Up to 99.95% Availability Up to 98% Wet Electrostatic Precipitators (ESP) technical features Gas Flow Rate 15-2,000 m 3 /s Gas Temperature Up to 70 C, saturated gas Dust load Up to 1.2 g/nm³ Emission at ESP outlet down to 0.5 mg/nm³ Removal efficiency Up to 99.95% Availability Up to 98% Fabric Filters (FF) technical features Types Reverse Air Filters & Pulse jet filters Gas Temperature C Gas Flow Rate 10-1,500m 3 /s Dust Loading at FF inlet g/nm 3 Emission at FF outlet down to 1-5 g/nm 3 Availability Up to 99% Bag Life Guarantee 1 to 6 years, depending on application and filter type 6

7 TECHNICAL PRODUCT SPECIFICATIONS Flue Gas Desulfurization Our portfolio for flue gas desulfurization reduces emission of SO x by adding dry or wet sorbent and converting it into an inert compound that can be safely disposed. Our FGD systems can be either dry or wet and achieve up to 95% removal of SO x. GE can design and deliver FGD systems for a large number of applications, including boilers, sinterbands and coke ovens. Our dry sorbent system is a low cost dry flue gas desulphurization system for low to medium SO x removal requirements. Our technology can use different sorbents depending on requirements and availability. The sorbent is injected directly into the flue gas with the SO x reduction reaction taking place in the flue gas channel and on the filter bags in the downstream bag filter. For the Dry systems there is no need for waste water treatment. Drypac is our advanced high efficiency, low cost semi-dry flue gas desulfurization system which offers multipollutant control with zero waste water discharge. Drypac incorporates a column where acid gases like SO x, HCl and HF react with lime milk in a spray tower. Once the abatement reaction is finished, particulate matters are removed from the flue gas in a downstream dedusting unit. Our Wet FGD systems are tailored for any SO x abatement and have a compact foot print specifically for non-ferrous applications. The Flowpac WFGD contains a turbulent bed absorber, in which a flue gas passes through limestone slurry. It is targeted for applications requiring increased SO 2 removal efficiency and enhanced SO 3 removal efficiency. Spray Dryer Absorber (SDA) technical features SO 2 / SO 3 / HCl / HF removal rate Up to 95% Maximum SO 2 content at inlet 6,000 mg/nm³ Maximum gas flow rate per absorber Up to 1,150,000 m 3 /h Particulate emission guarantee 10 mg/nm³ Max inlet temperature 260 C Load range per absorber % Reagent Ca(OH) 2 or CaO Availability up to 98% Founded in 1994, Italiana Coke is a major European supplier of coke for foundries and steelworks. At its Cairo Montenotte plant, Italiana Coke produces over 500,000 tons of coke per year. GE supplied a new exhaust hood and a new network to capture and filter dust generated during the coke pushing process. Incorporating all the dimension and fluid dynamic parameters from the field and from the pushing machine designer, GE provided a high collection capacity hood to improve the efficiency and reduce the diffuse emissions of the plant. The hood has been installed on the new coke-guide machine to ensure better dust collection from the furnace. Through a mobile connection system with the exhaust manifold, the hoods run over the 350m of the 4 furnaces. The fumes are treated in a new fabric filter equipped with 8m long bags, and the atmospheric emissions are kept below the European standards (<1mg/Nm3 at chimney or <5g/t coke produced). 7

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