Grate Combustion

Benefit from the most advanced thermal waste treatment available, using our proven grate combustion technology. We design and build to your individual requirements, helping select the ideal grate system for the make-up of your waste content.

• Reciprocating grate
• Counter-reciprocating grate
• Roller grate

A choice of air or water-cooled grates, tailor-made combustion chamber design, and optimised steam parameters deliver the highest levels of performance and reliability you demand.

Grate combustion leads the way as the most reliable, environmentally friendly, flexible and cost-effective thermal waste treatment technology. Our global experience in grate combustion technology, combined with constant research and development, provides you with a best-in-class solution.

The Benefits of Grate Combustion

• Unbeatable flexibility when it comes to fuel consistency and quality. Achieve reliable burnout of waste across the entire calorific value range from 6.0 to 18 MJ/kg
• Rugged construction enables domestic and commercial waste to be burned without extensive pre-treatment
• Adjustable reciprocating grate velocities in the three sections of the grate optimise the stoking action for perfect bottom ash quality
• The choice of a water-cooled grate for low wear and tear and a high thermal load-bearing capacity of up to 1MW/m2. Ideal for the incineration of high-calorific waste such as solid recovered fuel
• Tailored configuration of the combustion chamber to suit the moisture content, calorific value and volume of your waste
• An advanced roller grate design featuring six or seven graded cylindrical rollers, which are individually regulated to adapt to different waste incineration behaviours. Constant air cooling of the roller surfaces ensures even higher calorific waste is handled with ease

Steam generation

With our leading boiler concepts you safeguard to harness the maximum performance potential of the steam generated from your individual type of waste. This is made possible because our boiler units work with optimum parameters which minimise the heat losses thus maximising the efficiency.

With our specific WtE knowhow we design our steam generators from the initial concept to the detail engineering which gives us the full control over both design and performance. This approach allows us to be in a position to select the best regional manufacturing companies while ensuring highest possible quality.

What’s more, our boiler engineering features the flexibility you demand in respect of certain space challenges. With our designs being adapted to local site conditions you benefit from receiving a boiler concept fully integrated into available structures.

Flue Gas Cleaning

Deliver on your environmental and emission objectives with our trusted Circoclean® flue gas cleaning (FGC) solution, using proven fluidised bed technology.

Circoclean’s® advanced technology has been designed around the exacting demands of your WtE plant. Our processes have been developed to meet stringent emissions requirements and provide you with a robust and environmentally sound solution.

Circoclean® forms part of our comprehensive range of world-class air pollution control (APC) solutions, encompassing dry and wet processes, together with fully integrated dedusting electrostatic precipitators (ESPs) and fabric filters.

Circoclean® for WtE Delivers a Range of Benefits

• A compact, high performance and cost-effective reactor design — featuring no rotating or wearing parts — reduces investment costs and minimises your maintenance expenditure
• High flexibility to handle varying pollutant concentrations effectively, including sulphur dioxide, hydrogen chloride and hydrogenfluoride.
• An advanced process that minimises material consumption, water use and residues
• A simple, reliable process that meets all emission control and regulatory requirements

How Circoclean® Works Pollutants are effectively eliminated thanks to a fluidised bed reactor combined with a downstream fabric filter for particulate separation.

1. Fresh additives enter the fluidised bed reactor, where hydrated lime is used to absorb acid pollutant and powdered activated carbon to adsorb heavy metals, as well as poly-chlorinated hydrocarbons such as dioxins and furanes
2. The bulk of the solid material is then re-circulated from the fabric filter to the fluidised bed, maximising the use of the additives
3. Water is injected to boost the absorption performance and to control the flue gas temperature