6

Company

Process

Application

Number of Installations

Date of Last Installation

SNCR of NOx

Shell

Exxon Research and Engineering Co.

Lurgi AG

Nalco Fuel Tech

Research-

Cottrell/Nalco Fuel Tech

Thermal NOx Reduction

ABB Stal

Catalytic SOx Reduction

Haldor Tops0e A/S

Noncatalytic SOx Reduction

Exxon Research and Engineering Co.

Lurgi AG

Incineration

NAO Inc.

Praxair, Inc.

Other

Edwards Engineering Corp.

Institut Français du Pétrole/Babcock Enterprises

Catalytic NOx reduction

Thermal NOx reduction

SNCR of NOx

SNCR of NOx

SNCR of NOx

Dry low NOx combustion

Catalytic SOx and NOx removal

Wet gas scrubbing process

Wet gas scrubbing

Thermal incineration of VOCs

Oxygen combustion

Hydrocarbon/ solvent vapor recovery system

Clean combustion of heavy fuel oil

Low temperature catalyst can achieve 90% reduction of NOx.

Reduces NOx emissions in flue gas streams with aqueous and anhydrous ammonia and has 80% efficiency. Temperature: 700-1100°C.

Noncatalytic process reduces NOx compounds using aqueous ammonia or urea. SNCR of NOx from stationary combustion sources uses stabilized aqueous urea. Cost: $500-1500/tn NOx. Temperature: 815-1100°C.

Process uses controlled urea injection and chemicals to reduce NOx emissions.

System reduces NOx emissions for gas turbines.

Catalytic process removes SO2 and NOx from flue gases and offgases. NOx is reduced by ammonia to N2 and H2O.

Process removes particulates and SOx from FCC unit. Simple system has economic and operating advantages over other control systems.

Dust, noxious gases, and heavy metals are scrubbed from flue gas and recovered as a slurry form.

Thermal oxidizer destroys VOC emissions with 99.9% efficiency and can recover valuable thermal energy.

Process uses high-velocity oxygen jets to replace air that recirculates organics within the incinerator.

Hydrocarbon and solvent vapor recovery system, based on the Rankine refrigeration cycle, condenses vapors to liquids. AUDE boiler burns heavy fuel oil and petroleum residues cleanly and meets European directives on atmospheric discharges.

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