Our product range

Sorbacal® is a specific trademark for flue gas treatment (FGT). Our sorbents offer excellent results for a wide variety of industries using various processes and types of fuel: from coal to biomass and refuse-derived fuel (RDF).

Sorbacal® BLENDS

Tailor-made blends of calcic and carbon sorbents

Lhoist supplies tailor-made blends of hydrated lime products with activated carbon. Blend percentages are based on the amount of each pollutant in the flue gas to be treated, as well as the process conditions.

Our market-leading hydrated lime products Sorbacal® SP and SPS can be blended with high quality activated carbon. Such a blend enables both acid-gas pollutants and mercury to be captured with one sorbent in a single DSI system. In addition, blending with a calcium sorbent mitigates the risk that the activated carbon powder will combust or explode.

Blends can be tailored to your plant operation specifications.

Others: H3PO4, HBr, organic pollutants like PCBs, HAPs and/or odors​

FGT Limestone

Crushed and milled high-purity limestone (calcium carbonate-CaCO3)

Lhoist offers a number of FGT limestone products in a range of ground and milled, high-purity products supplied in different particle size distributions (PSDs). We have the expertise to deliver the optimal PSD: from granular for packed bed absorbers (PBA) to granules for circulating fluidized boilers (CFB), and from fine to superfine particles for wet scrubber and dry injection systems.

Combined with very efficient logistics solutions, FGT limestone products are cost-effective sorbents for limestone forced oxidation (LSFO) wet scrubbers, circulating or fluidized bed boilers (CFB/FBB), and packed bed absorbers. In addition, its purity and high whiteness make gypsum by-products more valuable.

Others: H3PO4, HBr

Lime slurry

Ready-to-use lime slurry

Lime slurry is used for semi-dry or spray dry absorber processes, as well as  wet FGD units.

The quality and reactivity of lime slurry depend on the characteristics of the lime and water quality (chemical composition, temperature, particle size), as well as the slaking conditions.

Ready-for-use, our lime slurry reduces the uncertainty and operational complexity of on-site slaking. The carefully controlled manufacturing conditions ensure constant high quality and eliminate issues due to downtime with slaking equipment and poor quality lime slurry production.

Others: H3PO4, HBr


High-quality quicklime in different particle-size distributions

Quicklime, or calcium oxide (CaO), is widely used in a large variety of flue gas desulfurization (FGD) processes. The product is supplied in different particle-size distributions (PSD) varying from pebble to very fine powder , with a minimum of typically 92% available CaO as measured with ASTM C-25 method.

Quicklime can be used to produce slurry and hydrated lime for spray dryer absorber (SDA), circulating dry scrubber (CDS) and wet FGD systems. The quality and reactivity of the lime slurry depend on the characteristics of the lime and water quality (chemical composition, temperature, particle size), as well as the slaking conditions.

Others: H3PO4, HBr


Tailored magnesium quicklime blends for high removal performance

Lhoist Mag-On-Demand™ (MOD) blended quicklime products are designed to provide magnesium mainly for wet scrubbers.

Magnesium percentages, typically 4-10%, are tailored to each customer’s needs. The magnesium reacts with SO2 to form magnesium sulfite, increasing the overall alkalinity of the scrubbing liquor.

Others: H3PO4, HBr, Selenium

Sorbacal® CDS

Enhanced Flowability in CDS systems

Sorbacal® CDS is an innovative sorbent developed specifically for circulating dry scrubber systems. It has been specifically formulated to have better flowability and is able to handle more than double the water content compared to standard hydrates. This unique feature of enabling operation at increased residue water content leads to a diverse range of benefits in CDS systems.

Ideally suited for all circulating dry scrubber designs and industrial processes.

FGT Processes

Sorbacal® H

Premium grade hydrated lime

Sorbacal® H is a hydrated lime or calcium hydroxide (Ca(OH)2) of high quality for emission control applications. Compared to standard hydrates, it has a higher specific surface area of typically 15-22 m2/g (BET), as well as a porous volume of typically 0.08 cm³/g (BJH). Both enhance acid gas capture.

A white, dry, ready-to-use powder, Sorbacal® H is used directly in dry processes, as well as for producing lime slurry (milk of lime) for semi-dry processes.

Others: H3PO4, HBr

Sorbacal® SPS

Activated, highly-porous hydrated lime with best-in-class performance

Standard hydrated lime

Sorbacal® SPS

Sorbacal® SPS is an activated enhanced hydrated lime with the highest acid gas removal performances. It was developed especially for removing acid gas pollutants using dry or combined processes. Sorbacal® SPS has a specific surface area of typically 40 m2/g (BET) and a porous volume of typically 0.20 cm³/g (BJH). The particle size of Sorbacal® SPS is designed and controlled for compatibility with standard PCD equipment and for optimal reactivity, flowability and handling.
This dry, white, ready-to-use powder meets high SO2 removal demands in addition to other acid gases like HCl, SO3, and HF. Sorbacal® SPS has the same physical and chemical characteristics as Sorbacal® SP, but is activated at the time of production to improve performance. Also, like Sorbacal® SP, it does not require prior milling and is applicable for a very wide temperature range between 122-1.650 °F.  Sorbacal® SPS has an improved electrical resistivity making it more compatible with electrostatic precipitators than any other calcium based product.

Others: H3PO4, HBr

Sorbacal® SP

Highly porous hydrated lime with strong removal performance

Standard hydrated lime

Sorbacal® SP

Sorbacal SP ® is an enhanced hydrated lime especially designed for DSI applications. Its specific surface area of typically 40 m²/g (BET) is two times higher than standard hydrated lime, and its porous volume is typically 0.20 cm³/g (BJH), compared to 0.08 cm³/g for standard hydrated lime. These qualities make the material significantly more effective for acid gas removal than standard hydrates. The particle size of Sorbacal® SP is designed for optimal reactivity, flow ability and handling.
A flagship product with a long history of industrial application, Sorbacal® SP is a dry, white, ready-to-use powder. Therefore, no milling or preparation is required before injection. It is ideally suited for all kinds of industrial processes, including incinerators, coal and biomass-fueled power plants, as well as a growing number of new FGT applications in the cement and glass industries.

Others: H3PO4, HBr​

Contact our local FGT specialists to evaluate your application and determine the most appropriate sorbent for your facility.