Fuel flexible utility scale CFB boiler development
24-07-2015
China CFB technology has been typically associated with small-scale industrial boilers using difficult fuels. But with the emergence of utility-scale commercial installations, ZG CFB boiler finds that this is changing.
Given the multi-decade lifespan of the average power generating asset, security of fuel supply is a key issue for the industry. However, it is becoming increasingly evident that, as ever, flexibility is the name of the game in the modern energy environment. A number of factors, such as the changing characteristics and availability of fuels and the increasing opportunities available from generating energy from waste streams, has prompted the development of fuel-flexible technologies, in particular Circulating Fluidized Bed (CFB) boilers.
CFB technology has evolved over the last four decades or so from industrial boiler technology used to burn difficult fuels in the late 1970s to a utility-scale product supplied by a growing number of major OEMs. We do see CFB as a more favorable product for burning multiple fuels like biomass and pet-coke, either in combination with coal or alone. We see a lot more of the market moving towards renewable fuels like biomass, or projects like pet-coke, or lower-value coal. The lower-value coal is easier to com-bust with a CFB than with PC: the coal would burn too hot in PC firing so you have slagging issues in those. In a controlled environment like a CFB these lower-value fuels are more suitable. Turkey and sub-Saharan Africa as examples of the increasing use of domestic low-quality coals: "We are seeing more countries looking to utilize their lower-value coals, when they can utilize local coals, rather than importing."
Internal fuel flexible utility scale CFB boiler
The increasing use of wood and biomass, notably in co-firing applications in Europe. We see a lot of wood-fired units that are going into Europe and certain countries. People are looking to burn biomass and this would favor fluid bed boilers, because you can't pulverize wood easily. If you're looking at fuel flexibility, like firing wood in combination with coal, CFB is sometimes the best and one of the only choices.
Within a internal CFB boiler the circulating bed material flows through the furnace together with the fuel and air. Combustion gases are then separated from the solid material with cyclones and any solids are returned to the lower part of the furnace while the gases pass on through the boiler.
One of the key differences between PF and CFB technologies is the boiler transit time. In a PF system a particle of fuel must reach a high enough temperature and be supplied with sufficient oxygen for complete combustion in a transit time of perhaps three or four seconds. In a CFB any unburned material is returned to the furnace and a larger particle can spend as much as 30 minutes within the furnace for complete combustion to occur.
Circulating fluidised bed Boiler Cases
ZG Boiler Workshop
Why choose ZG Boiler as Fuel flexible utility scale CFB boiler development manufacturer
We have over 70 years' experience of boiler and autoclave, and we have a professional installation and after-sales staff for products.Take advantage of the most economical way to improve efficiency and operating flexibility, Get substantial savings on your fuel costs,Reduce all emissions for each K/W of electricity generated, including CO2.
How about the quality of Fuel flexible utility scale CFB boiler development ?
Our Fuel flexible utility scale CFB boiler development manufactured strictly according to national and international standard. our products have approved ASME, IBR, ISO9001-2008, etc
All our company's products are 100% factory inspected to ensure the high quality.
We provide one year quality warranty service, please rest assured purchase.
Basic Information of CFB Boiler manufacturer--- ZG Boiler
Established:In 1945
Number of Employees:above 1500 People
Our products:industrial horizontal steam boiler and hot water boiler(biomass boiler, gas boiler, oil boiler, coal boiler, etc), CFB boiler, power plant boiler, waste heating recovery boiler, Pressure Vessel(AAC autoclave, Curing tank,etc )
Factory Size (Sq.meters):400,000 square meters
Factory Location:Factory 1: Zhengzhou,,Henan, China. Factory 2: Xingyang,Henan,China
Number of R&D Staff:376 people
Our Trade & Market
Export Percentage:30-40%
Total Annual Sales Volume:US$100 Million
Main Market:South America(Colombia, Venezuela, Guyana, Suriname, Ecuador, Peru, Brazil, Bolivia, Chile, Paraguay, Uruguay, Argentina and French Guiana),
North America(Bahamas, Canada, Costa Rica, Cuba, El Salvador, Guatemala, Honduras, Haiti, Jamaica, Mexico, Nicaragua, Panama),
Eastern Asia(Mongolia / Russia / North Korea / South Korea / Japan),
Oceania(Australia, New Zealand, Fiji),
Mid East(Bahrain, Egypt, Iran, Iraq, Israel, Jordan, Kuwait, Lebanon, Oman, Qatar, Saudi Arabia, Syria, UAE and Yemen, Palestine, Algeria, Libya, Morocco, Tunisia and Sudan, Mauritania and Somalia),
Africa(Egypt, Sudan, Libya, Tunisia, Algeria, Morocco, Ethiopia, Somalia, Kenya, Tanzania, Sierra Leone, Liberia, Cote d'Ivoire, Ghana, Togo, Niger, Nigeria, Cameroon, Gabon, Congo (Brazzaville), Zambia, Zimbabwe, Angola, Mozambique, Botswana, Namibia, South Africa),
South Asia(Nepal, Bhutan, India, Pakistan, Bangladesh, Sri Lanka, Maldives)
Southeast Asia(Vietnam, Laos, Cambodia, Thailand, Myanmar, Malaysia, Singapore, Indonesia, Brunei, the Philippines, East Timor)
Domestic Market(China)
