Coal-Fired Power Plants

Mercury Removal

Our customized powdered activated carbons (PACs) are designed with the flexibility to meet our partners’ unique needs in the most cost-effective manner. Our team works with utilities to custom engineer PACs that will best address their compliance requirements.

Our product lines feature impregnated PACs, produced from coal or domestic sustainable materials, that are designed to remove mercury in the gas and aqueous phases. The unique pore structure of our PACs permit the rapid adsorption and removal of mercury from combustion gases originating in various environments. The distinctive physical features combined with enhanced activity result in a high capacity sorbent for mercury capture.

Many of our partners select our non-corrosive activated carbons because they do not cause damage to equipment. Our superior-oxidizing additive enhances activity to make these activated carbons are just as effective as their brominated counterparts. While we prefer to use our non-corrosive additives, we also offer brominated products.

Related Products

Carbonxt’s MATS-PAC is a non-halogenated, oxidizing powdered activated carbon (PAC) that is chemically and physically enhanced for in-flight gas phase removal of mercury (Hg). It is enriched with Carbonxt’s proprietary, non-halogenated oxidizing additive, providing the necessary oxidation for Hg capture while eliminating the worry of corrosion associated with brominated sorbents.

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Carbonxt’s MATS-PAC Plus is an enhanced version of MATS-PAC that incorporates a second proprietary non-halogenated additive that targets the removal of elemental mercury. This PAC is well-suited for challenging environments with competing species such as SO3.

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Carbonxt’s MATS-PAC HgZero is a powdered activated carbon (PAC) that is chemically and physically tailored for in-flight gas phase removal of mercury. It is enriched with a blend of Carbonxt’s proprietary additives, providing enhanced oxidation in challenging flue gas environments where mercury oxidation is difficult.

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Carbonxt’s proprietary process (includes sorbent and system) developed for mercury capture in wet flue gas desulfurization systems. Cxt-WetJect™ targets the removal of air phase and water phase mercury in order to meet compliance of the Mercury and Air Toxics Standards (MATS) and Effluent Limitation Guidelines (ELGs).

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Carbonxt’s Cxt-NAQ-ACP is a high quality pelletized activated carbon sorbent. It was developed specifically for the removal of SO2, NOx and mercury from flue gas. Cxt-NAQ-ACP has a high adsorption capacity targeting multi-pollutant environments while maintaining superior mechanical strength.

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Mercury & Flue Gas Component Removal

Our proven oxidizing, non-corrosive PACs are highly suitable for flue gas with high elemental mercury and/or SO3 concentrations. Our patented technology does not contain bromine or other halogens, eliminating potential corrosion concerns. The superior-oxidizing additive enables these products to be just as effective as brominated activated carbons. We engineer both non-brominated and brominated activated carbons, though we recommend our non-corrosive options.

Non-Corrosive Activated Carbon Advantages

Our R&D team works diligently to create a unique product with distinct advantages for our clients.

We’re proud to say our
non-corrosive activated carbons are:

Non-Brominated

  • No corrosion of handling equipment, plant ductwork or equipment

Cost-Effective

  • Lower injection rates due to high capacity
  • Minimize impacts on fly ash

Flexible

  • Injection tailored to meet plant needs
  • Injection applied upstream or downstream of the air heater
  • Particulate removal electrostatic precipitator, fabric filter or combinations of these

AIR PHASE REMOVAL OF MERCURY

Carbonxt’s oxidizing, non-corrosive PACs are engineered for flue gas with high elemental mercury and/or SO3 concentrations. Our patented technology does not contain bromine or other halogens, eliminating potential corrosion concerns. The superior-oxidizing additive enables these products to be just as effective as brominated activated carbons. We engineer both non-brominated and brominated activated carbons, though we recommend our non-corrosive options.

Case Studies

Carbonxt Non-Halogenated PAC Selected for ESP Application with Fuel Additive
Replacing Brominated PACs in SDA/FF Application for Consistent Mercury Mitigation

EFFLUENT LIMITATION GUIDELINES (ELGS)

Carbonxt recognizes that utilities face an added challenge with the Effluent Limitation Guidelines (ELG) compliance requirements. As such, we are working towards an efficient solution that will target water phase mercury and selenium via a single treatment method. Carbonxt’s Cat34 technology uses a combination of filtration and advanced oxidation/reduction processes to target select heavy metals. Our technology offers several advantages over biological treatment such as low footprint, faster kinetics and operational simplicity (not load dependent). Please contact products@carbonxt.com for more information on how to schedule a pilot test.

Case Studies

ELGS Case Study

WETJECT™

Carbonxt has developed a patented process to target air and water phase mercury through the injection of a customized sorbent directly into wet flue gas desulfurization (WFGD) systems. This technology has proven to be much more efficient for mercury removal compared to standard PAC injection into the air phase for a variety of reasons:

  • Cooler temperatures favor mercury adsorption kinetics,
  • Less competing species present that hinder mercury capture (such as SO3),

  • Recirculation of PAC in the WFGD system allows more contact time, thus reducing required rates.

Case Studies

Wet FGD Injection for Consistent Mercury Mitigation

Testimonials