Macrotek Inc. applications

Flue Gas Desulfurization (FGD) involves the removal of sulfur dioxide and other acids from flue gases. Typical sources of acid gases include fossil fuel boilers, waste combustors, and other industrial applications such as refining and smelting. The Macrotek wet and dry FGD systems can achieve over 99% acid removal by using a variety of reagents, including caustic, sodium carbonate, lime and limestone, and waste alkaline solids or liquids.

The severity of these contaminants requires the most advanced removal and treatment technologies. Macrotek has extensive experience in designing systems that will meet and exceed customers` requirements and regulations. In addition, the corrosive nature of these gases requires specific consideration for material selection.

Hydrogen Sulfide is lethal if released. Macrotek is a leader in developing advanced technologies for optimum removal and treatment. Our experience includes many installations using caustic, oxidizing reagents, catalytic and forced oxidation combination, and biofilters. Each application is unique and requires custom solutions.

Control of emissions is often required due to the hazardous nature of the contaminant. Often, control or removal is necessary due to offensive odours. Ammonia, sulfur and other related compounds fall in these categories. Macrotek offers many control technologies to capture ammonia and other odour causing contaminants. Reagents are often used to neutralize and stabilize the by-product.

Specific industrial applications require wet end of pipe treatment for NOx or CO2. Macrotek offers absorbers utilizing various reagents for neutralization of NOx or CO2. NOx scrubbing is particularly suitable in situations where Nitric Acid can be utilized elsewhere in the plant, as it is a scrubbing product. As CO2 regulations become more stringent, methods for reducing emissions are continually being evaluated. Macrotek offers CO2 scrubbing technology which isolates CO2 in a contaminated stream to produce a pure CO2 product, making sequestration a more appealing option.

Hydrometallurgical extraction of metals such as Nickel and Cobalt generate emissions of lethal gases such as Hydrogen Sulphide or Hydrogen Chloride. Macrotek has designed and supplied many systems to capture and treat these gases. In most cases the by-product is returned back to the process for reuse. Pyrometallurgical extraction of metals from sulphur containing ores generate large amounts of SO2 and particulate emissions. Macrotek has designed integrated systems to capture particulate and neutralizes SO2.

Waste incineration, including solid municipal and hazardous waste, biomedical waste and hazardous liquid are all continually under more stringent scrutiny by regulators. Macrotek has designed and supplied many integrated systems to meet most guidelines. In several installations, hazardous waste has been combined with radioactive waste, requiring nearly non-detectable emission levels for many of the contaminants. Macrotek has installed and tested systems for these processes with the results significantly better than required standards.

Gasification and synthetic gas production from various waste products are becoming increasingly important energy recovery technologies. Often, the synthetic gas contains various hazardous contaminants including H2S, HCl and other acids, heavy metals, and tars. The gas requires cleaning before it is introduced in the engine or boiler. Most of these processes generate significant concentration of tars. The tars can vary from very low molecular weight to large and complex chains.

Refineries and chemical plants increasingly face stringent environmental regulations in today’s industry while also consistently attempting to maximize output efficiency. Macrotek offers customized scrubbing technology designs to meet each unique refining application. An experienced engineering team and proven emission control technologies make Macrotek ideal for the extensive scope of refining processes.

Stringent regulations all over the world, including the new Boiler MACT ruling, are being enforced on new and existing air pollution control systems. Many of the existing scrubbers are having a more difficult time meeting performance criteria. Macrotek has the innovative solutions to retrofit existing systems or replace with new systems to meet and exceed new targets.