Clean and EfficientAluminium Production2017 STEAM POWER SYSTEMS PRODUCT CATALOG

GE Power

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PORTFOLIO AND OVERVIEW ALUMINIUM, ALUMINA & CARBON

Cleaner and more efficient aluminum production.

Reduced Environmental Footprint

Significantly reduced emissions with ABART counter current alumina injection.

Improved Operational Integrity, Efficiency and Sustainability

Gas Conditioning by HEX potentially results in 30% less conventional GTC size and Power requirements as cooling by dilution air is 1.78 times larger than for HEX

Primary Aluminium Industry SolutionsWith more than 230 installations globally, our aluminum technology has evolved over the past 60 years to cope with increasing pot amperage, more stringent environmental regulations and maximum return of valuable materials to the process. Along with increased production volumes encountered in the aluminum industry comes a rising demand for greater efficiency that GE is meeting with completely new and integrated approaches to gas cleaning, heat recovery, and alumina feed systems.

Gas Treatment Centers (GTCs)

Our Gas Treatment Centers (GTCs), built around our Abart*technology, add various solutions, such as heat exchangers and SO2 abatement, with benefits such as better gas temperature control, lower emissions and smaller footprint.

Novel Fume Treatment Center (FTC)

The Novel Fume Treatment Center (FTC) is also built around our Abart* but applied to PAH-laden fumes from anode baking. It also incorporates the unique GE patented integrated gas conditioning, fume scrubbing, energy recovery heat exchanger (AHEX).

Alfeed* supply-on-demand

The Alfeed*supply-on-demand horizontal transport and distribution system reliably delivers enriched alumina to the pots and is ideal for modernizing and modularization of the GTCs. This self-regulating, fully automatic air slide system requires little maintenance. Its compact form reduces space conflicts, and it can be retrofitted during normal potline operation.

Secondary Aluminium, Alumina & Carbon Industry SolutionsAdditionally for Secondary Aluminium, Alumina and dedicated Carbon plants GE possesses a host of dedusting, acid neutralization, multipollutant treatment and tar/VOC/Odour abatement systems from small pre-assembled units to fully integrated tailored solutions.

GE Air Quality Control Systems are suitable for both new plants and for upgrade of existing plants.

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INTRODUCTION

Reduced Physical Footprint

The ABART-C based GTC solution results in up to 60% less footprint compared to conventional GTC with DeSOx scrubbing

Lower Operating Cost

Gas Conditioning by HEX results in power consumption savings up to 2 MW less per GTC with HEX

Application / GE Solutions

ABA

RT G

TC

ABA

RT F

TC

ALF

EED

/Alu

min

a H

andl

ing

&

Stor

age

HEX

/AH

EX

ESP/

FF

WFG

D/D

FGD

/SW

FGD

TO/R

TO/K

EMPA

K/P

AC

GE

Dig

ital

Alumina Calciner

Aluminium Potline

Carbon/Anode Plant

Casthouse/Melt Shop

Finishing/Coating Lines

Decoating Lines

Scrap / Dross Recycling

Multi-Site Integration

Performance Analytics

Captive Power / Boilers

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SUCCESS STORY

The world’s largest single site aluminium smelter, EGA Al Taweelah (also known as EMAL), is based in the UAE. The smelter complex was constructed in two successive phases, reaching a production capacity of more than 1.3 million tonnes of molten aluminium per year. Our Potline Gas Treatment Centers (GTCs) and Carbon Anode Baking Oven Fume Treatment Centers (FTCs) were provided for both phases, as was the world’s largest GTC, the first in the area to also incorporate SWFGD.

DETAILS

ALUMINIUM, ALUMINA & CARBON

Emission Guarantees After Dry Scrubber

Hydrogen Fluoride HF 0.5 mg/Nm3

Particulate Fluoride 0.3 mg/Nm3

Total Fluorides 0.8 mg/Nm3

Total Particulates

5, with standard polyester bags

2, with MicroDenier “Super” bags

Emission Guarantees After Wet Scrubber

SO2 Emission

>95% removal, SWFGD with packing

>85% removal, WFGD Open Spray Tower

Total Fluoride 0.2 mg/Nm3

Total Particulates <0.2 mg/Nm3

Gas Treatment Center – GTC

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GTC with SWFGD FTC with AHEX

TECHNICAL PRODUCT SPECIFICATIONS

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Emission Guarantees After Dry Scrubber

Hydrogen Fluoride HF (mg/Nm3) 0.5 mg/Nm3

Particulate Fluoride 0.3 mg/Nm3

Total Fluorides 0.8 mg/Nm3

Total Particulates 5 mg/Nm3

Condensed Soluble Tars 1.7 mg/Nm3

Polycyclic Aromatic Hydrocarbons – PAH16 0.2 mg/Nm3

Emission Guarantees After Wet Scrubber

Hydrogen Fluoride HF (mg/Nm3) 0.2 mg/Nm3 achieved

Particulate Fluoride 0.1 mg/Nm3achieved

Total Fluorides 0.3 mg/Nm3achieved

Total Particulates 0.1 mg/Nm3achieved

Condensed Soluble Tars 0.4 mg/Nm3achieved

Polycyclic Aromatic Hydrocarbons – PAH16 0.2 mg/Nm3achieved

Fume Treatment Center – FTC

ALUMINIUM, ALUMINA & CARBON

Dedusting or Product Recovery

Dry ESP : PM only Up to 99.95% removal efficiency

Wet ESP : PM + Acid Gas removal Up to 99.5% removal efficiency

FF : Total Particulates Typically as low as 5 mg/Nm3

Acid Gas Neutralisation

Removal efficiency Typ. 95-98%

Wet Reagent Scrubbing Systems (WFGD) Up to 99% removal efficiency

Sea Water Reagent Scrubbing System (SWFGD) Up to 98% removal efficiency

NOx Control

Selective Catalytic Reduction (SCR) Up to 95% removal efficiency

VOC/Odour Neutralisation

Thermal Oxidiser (TO) Typ.99.5% destruction efficiency

Regenerative Thermal Oxidiser (RTO) Typ.95-99.5% dest. efficiency

Wet Chemical Scrubbing (KEMPAK) Case-by-Case

Others

Energy Recovery Case-by-Case

Alumina Storage, handling & feed Case-by-Case

Other Applications (Secondary, Alumina, Carbon)

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TECHNICAL PRODUCT SPECIFICATIONS

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