Doosan Lentjes - Circulating Fluidised Bed Technologies
As pioneers of Circulating Fluidised Bed (CFB) technology, we deliver unrivalled expertise in maximising value through flexible and reliable boiler solutions.
Benefits
Benefit from efficient and environmentally sound solutions for steam and power generation by collaborating with Doosan Lentjes – a recognised leader and pioneer in advanced CFB boiler technology. Our solutions help you to achieve the goals associated with the global energy transition requirements.
Refinement and Innovation in Circulating Fluidised Bed Boiler Technology
When fuel quality and range are critical to your project’s viability you can depend on our advanced Circulating Fluidised Bed (CFB) boiler technology. Constant refinement and innovation means you benefit from a product which can deliver the critical reliability and environmental performance you need.
CFB technology is a part of our heritage; as a trusted name in the deployment of high efficiency boilers with integrated Fluidised Bed Heat Exchanger (FBHE) systems, we have a proven track record of up to almost 300MWe (~700MWth) with the capability to offer designs up to 500MWe (~1300MWth).
Our focus on constant refinement and innovation in our products has allowed us to develop a design that is more compact and minimises boiler footprint. Coupled with our parametric design process we can offer superlative value regardless of your application. At the heart of cleaner, highly efficient power generation at your facility, our proven CFB process delivers ‘best in class’ emissions performance. Utilising limestone furnace addition ensures that more than 90% of sulphur dioxide (SO2) emissions are captured and thanks to low, multi-stage combustion at temperatures of 850°C, we minimise thermal NOx formation and deliver remarkable NOx emission performance.
Our CFBs provide a range of further benefits :
- Product applications for a wide range of solid and liquid fuels including coals, lignites, biomasses, refinery by-products, slurries, etc
- Carbon burn-out of 98-99% depending on fuel type
- Partial load operation as low as 40%, with a rate of load change of up to 3-7% per minute dependent upon your needs
- Optimised for conventional sub-critical steam, supercritical and Combined Heat and Power (CHP) applications
We continue to deliver a range of innovations to maximise availability, reliability, efficiency and minimise emissions. Our integrated Fluidised Bed Heat Exchanger (FBHE) is just one of our key innovations delivering more effective heat transfer from hot ash to steam allowing for the optimal operating conditions that result in high efficiency. Coupled with our Spiess valve technology for reliable ash flow control such innovations also bring enhanced availability.
Our developments continue to focus on improving value with performance be that through water cooled cyclones with compact geometries to developing the next generation CFB at higher supercritical steam conditions.
With over 100 CFB plants in operation globally our clients have placed their trust in Doosan Lentjes to continue to deliver product improvements that add value to their power generation and steam production CFB.
Applications
Efficient CFB Performance Across Fuels
We understand that performance is a critical factor in your choice of CFB technology — especially where fuel quality and power availability are an issue.
Our CFB reputation was founded on delivering efficient combustion across a wide range of fuel types — even the most demanding.
We provide unrivalled expertise in fuels with variable combustion properties, including those with low calorific values, high moisture, high ash content or lower ash melting temperatures.
We can help you achieve reliable and efficient power generation for challenging fuels such as:
- High moisture/low calorific lignite (right down to 1000 kcal/kg)
- High ash coals, including lignite and bituminous
- Low volatile coals, such as anthracite and petcoke
- High sulphur coals
- Co-firing biomass applications
Our bespoke systems have been painstakingly developed to overcome the inherent problems associated with lower quality fuels, where efficient temperature control is the pre-requisite for combustion.
Our unique, robust and reliable system of Fluidised Bed Heat Exchanger (FBHE) combined with the hot ash extraction system, called Spiess valve:
- Ensures safe temperature control for efficient combustion
- Ensures in-situ desulphurisation control
- Avoids blockage associated with low melting ashes
In addition, high efficiency cyclones support efficient burn out and heat transfer in the combustor to produce steam efficiently.
Cost Effective and Cleaner CFB Solutions
Deliver on your business and environmental objectives with our cost-effective CFB solutions, featuring best-in-class emissions control.
Compared to other processes like pulverised coal combustion, our CFB technology is inherently cost effective because :
- In most cases, external SOx/NOx emissions control is not required
- We focus on an economical, compact design
- We have standardised materials and a highly efficient supply chain
You leverage a cost-competitive solution while achieving the performance, reliability and efficiency you expect from one of the world's foremost CFB technology providers.
We also assure environmental performance through our integrated emission control, which delivers :
- Highefficient sulphur dioxide (SO2) capture by adding limestone to the CFB process and
- An efficiently controlled combustion process suppressing formation of thermal NOx removes the need for separate external flue gas desulphurisation and DeNOx across a wide range of fuels while still complying with EU emission regulations
- A cleaner carbon footprint through biomass co-combustion or main combustion capabilities
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