Redecam’s complete product portfolio, coupled with our experts’ technological know-how, allow us to tackle the most challenging flue gas treatment (FGT) issues, allowing you to reach your emissions reduction requirements in an efficient, cost-effective and rapid manner.

Based on the required abatement percentage(s), we will design complete solutions including an in-duct system, a standard reaction tower or a reaction tower with a recirculation system.

What makes our FGT systems better than the rest?

  • Redecam’s One-Step Cleaning Solution. This proven system removes all pollutants in one step (dust, SOX, mercury, HCl, Cl, HF, dioxins, furans, heavy metals). Its benefits:
    • Easy and low-cost installation;
    • Highly compact design.
  • Low maintenance. There’s no risk of corrosion, since the operation occurs above dew point, meaning low maintenance;
  • Re-usable by-product. The by-product of our FGT system is a dry, powdery residue which – depending on its composition – can be used as a filler (e.g. road construction) after stabilization or landfilled;
  • Low sorbent consumption. We can design a system that uses minimal sorbents when paired with the recirculation option.

Our solutions can reduce or eliminate the emission of:

  • Dust
  • Nitrogen oxides
  • Sulfur
  • Chloride
  • Mercury
  • Furans
  • Dioxins
  • Other heavy metals

Our Dry Injection Desulphurization (DID) Systems

Our Dry Injection Desulphurization (DID) systems remove acid gases SO2 (sulfur dioxide), SO3 (sulfur trioxide), Cl (chloride), HCl (hydrochloric acid) and HF (hydrogen fluoride). Regulations involving the emission of these gases are getting stricter, and this technology is increasingly on the radar at many power plants, as well as at incineration, biomass and waste-to-energy facilities. The systems are 80-95+% effective, depending on which of our three systems you choose and your plant’s process parameters.

Advantages of our Dry Injection Desulfurization (DID) systems compared to wet flue gas desulfurization (Wet FGD) systems:

  • Cost-effective in terms of CAPEX;
  • More compact;
  • Less water consumption due to non-clogging water spray nozzles;
  • Lower installation costs due to use of carbon steel instead of alloy metals;
  • Lower maintenance costs due to fewer moving parts;
  • Captures more pollutants due to better mixing;
  • Minimizes production of nitrogen oxides, which are greenhouse gases, due to low operating temperature.
DID-RC System with a Reaction Tower and a Re-Circulating System

DID-RC system that features a reaction tower and a re-circulating system.

Redecam offers three DID systems:

  • To consider in power plants, when the ductwork is long enough to allow gases to remain longer;
  • Ideal for retrofit applications as no extra-footprint is required;
  • Fly ash removal in a single step;
  • Low treatment time (at times less than 1s);
  • Capable of supporting multi-pollutant removal.
  • To consider in incineration, biomass or waste-to-energy plants as well as in facilities needing high performance systems;
  • Fly ash is removed with an air filtration system after sorbent is injected and SOX pollutants removed;
  • Short gas retention time (1-3 s);
  • Capable of supporting multi-pollutant removal.
This system is based on fluidized bed technology, which was introduced in the 1980s as an improvement to wet flue gas desulfurization.

  • To consider in incineration, biomass or waste-to-energy plants as well as in facilities needing high performance systems;
  • Enhanced performance and lower operating costs due to by-product recirculation, reducing the amount of reagent needed;
  • Low condensation, with a conservative approach to saturation temperature;
  • Fly ash is removed with an air filtration system after sorbent is injected and SOX pollutants removed;
  • Short gas retention time (1-3 s).

For more information about our DID systems, or to have one of our experts help with evaluating your needs please contact us.

Our Mercury Adsorption System (mercury and metals removal)

Redecam can reduce your mercury emissions by more than 90% with our air pollution control solutions, including our Mercury Adsorption System (MAS). In fact, our MAS not only removes mercury (Hg), but furans, dioxins, lead (Pb), cadmium (Cd), arsenic (As), chromium (Cr) and manganese (Mn) as well – some of these contaminants affecting DeNOX efficiency.

Over the past few years, regulatory agencies in the United States, Canada and Europe, as well as in other regions of the globe, have been introducing stricter regulations to limit mercury emissions, not only in coal power plants, but in cement mills, industrial boilers, waste incinerators and steel mills. Redecam’s Mercury Adsorption System can cost-effectively and efficiently help your plant achieve – and even surpass – its current and future mercury emissions reductions requirements. Our MAS can be used as a retrofit solution, adding it to your existing air pollution control system, or can be installed in a greenfield project.

Our MAS is a solution in which powdered activated carbon (PAC) is pneumatically-injected from a storage silo into your plant’s flue gas ductwork or reaction tower. The PAC absorbs the vaporized mercury from the flue gas and is then collected with the fly ash in the hopper.

Benefits of Redecam’s Mercury Adsorption System:

  • Effective. It can reduce mercury and other metals and contaminants by more than 90%;
  • Low CAPEX. It can be injected into existing ductwork;
  • Low operating costs. The powdered activated carbon is high quality and our silos store more, meaning fewer carbon deliveries and thus reduced transportation costs;
  • Low maintenance. Our system is designed to reduce wear and tear on various facets of the system.
MAS-R System featuring a Reaction Tower

MAS system shown with a reaction tower (optional).

Redecam offers two types of MAS:

This is the standard configuration for an existing installation.

  • Lower CAPEX;
  • No extra footprint required.
This is applicable when a reactor is needed for desulfurization as well, mainly in new plants.

  • No modification of ductwork required.

Our experts will evaluate your mercury reduction needs and propose an air pollution control solution that’s right for you.

For more information about our systems, or to talk with one of our representatives please contact us.

DeNOX Systems

Redecam offers the most effective ways of reducing nitric oxide and/or nitrogen dioxide (NOX) in raw gas emissions: with Selective Catalytic Reduction (SCR), Selective Non-Catalytic Reduction (SNCR) and Hybrid SNCR/SCR Systems.

We can help you evaluate which system is best for your needs considering your combustion process, operating parameters, NOX flue gas levels, emission reduction targets and CAPEX and OPEX availability. Based on this process data, our experts can design, build and install a customized NOX reduction solution.

Hybrid SCR and NSCR System

Selective Catalytic Reduction (SCR)

Selective Catalytic Reduction (SCR) is the optimal NOX control system, able to achieve more than 95% NOX reduction in combustion processes. It can therefore meet stricter incoming legislation.

Advantages:

  • Optimum effectiveness, reducing NOX by 95%;
  • Meets stricter incoming legislation;
  • Not as sensitive to varying temperatures as SNCR;
  • Perfect mixing is not required, as in SNCR;
  • Commissioning can be done during plant’s annual downtime.

Selective Non-Catalytic Reduction (SNCR)

Selective Non-Catalytic Reduction (SNCR) can easily reduce the NOX emissions by more than 80%, and in some cases even up to 95%. It is a cost-effective method of reducing NOX. It can often be installed without plant downtime.

SNCR is a method to reduce nitrogen oxide emissions in conventional power plants that burn biomass, waste and coal as well as in cement plants, waste incinerators and waste-to-energy plants.

Advantages:

  • Cost-effective in terms of CAPEX;
  • Faster installation, often with no plant downtime required;
  • Up to 95% effective;
  • Low maintenance, as there is no catalyst to replace and the system is fully automated.

Hybrid SNCR/SCR Systems

Hybrids are a newer technology, often an ideal choice when high NOX reduction is required and when space is limited. They are the most flexible choice to reduce NOX emissions.

Hybrid systems reduce the level of nitrogen oxides (NOX) in fossil fuel combustion flue gas with a Selective Non-Catalytic Reduction (SNCR) treatment stage followed by a Selective Catalytic Reduction (SCR) treatment stage. Hybrid systems are tailored to your needs: the percentage of the system acting as SNCR and the percentage acting as SCR vary depending on the process data of your facility.

Advantages:

  • Can be lower in terms of CAPEX;
  • Lower operating costs than SCR technology;
  • Ideal when a high NOX removal is required;
  • Requires limited space;
  • Less catalyst required than with SCR system.