Circulating fluidized bed(CFB) boiler working principle

Summary:CFB boiler working principle and How does the CFB boiler work can be get in this page, ZG is a circulating fluidized bed boiler manufacturer in China,With several years R&D, ZG boiler’s Circulating Fluidized Bed (CFB) boiler is characterized by its compatibility with a wide variety of fuels including: low-grade coal, biomass, sludge, waste plastics, etc

28-01-2015

CFB Boiler working principle

How does the CFB boiler work

CFB technology burns fuels without fire or burners in the furnace but through a process of fluidization mixes the fuel particles with limestone which captures the sulfur oxides that are formed and the low temperature reduces nitrogen oxide formation. The limestone and fuel are recycles multiples times which increases both the efficiency of producing high quality steam to produce power and also reduces pollution due to its ability to burn fuel in a clean way than the conventional processes. Circulating fluidized bed technology(CFB) also offers the flexibility of using both coal as well as biomass fuels.

Air supply is from under the bed at high pressure. This lifts the bed material and the coal particles and keeps it in suspension. The coal combustion takes place in this suspended condition. This is the Fluidized bed. Special design of the air nozzles at the bottom of the bed allows air flow without clogging. Primary air fans provide the preheated Fluidizing air. Secondary air fans provide pre-heated Combustion air. Nozzles in the furnace walls at various levels distribute the Combustion air in the furnace.

Fine particles of partly burned coal, ash and bed material are carried along with the flue gases to the upper areas of the furnace and then into a cyclone. In the cyclone the heavier particles separate from the gas and falls to the hopper of the cyclone. This returns to the furnace for recirculation. Hence the name Circulating Fluidized Bed combustion. The hot gases from the cyclone pass to the heat transfer surfaces and go out of the boiler.

CFB boiler working principle

Bed Material

To start with the bed material is sand. Some portion is lost in the ash during the operation and this has to be made-up. In coal fired boilers the ash from the coal itself will be the makeup material. When firing bio fuels with very low ash content sand will be the makeup bed material. For high Sulphur coals Limestone addition to the bed material reduces SO2 emissions.

CFBC uses crushed coal of 3 to 6 mm size. This requires only a crusher not a pulverizer. From storage hoppers Conveyer and feeders transport the coal to feed chutes in the furnace. Start up is by oil burners in the furnace. Ash spouts in the furnace remove the ash from the bottom of the furnace. it is CFB boiler working principle.

ZG is a circulating fluidized bed boiler manufacturer

The circulating fluidized bed (CFB) is a clean process with the ability to achieve lower emission of pollutants. By using this technology, up to 95% of pollutants will be absorbed before being emitted to the atmosphere.
In 1992, ZG and Tsinghua University cooperative research and development of circulating fluidized bed boilers. With several years R&D, ZG boiler’s Circulating Fluidized Bed (CFB) boiler is characterized by its compatibility with a wide variety of fuels including: low-grade coal, biomass, sludge, waste plastics, etc., whereas conventional boilers for power generation are available only for fossil fuels, such as high-grade coal, oil and gas. As the needs for a fuel shift are rising in response to the current CO2 emission reduction issues and the soaring oil prices, CFB boiler technology is increasingly attracting attention as a viable solution. Additionally, CFB boilers offer benefits such as low pollution, high-efficiency combustion, space saving, and high maintainability.

 

Circulating fluidised bed Boiler Cases

Cases about Circulating fluidized bed(CFB) boiler working principle

ZG Boiler Workshop

Factory about Circulating fluidized bed(CFB) boiler working principle supplier

Why choose ZG Boiler as Circulating fluidized bed(CFB) boiler working principle 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 Circulating fluidized bed(CFB) boiler working principle ?

About Circulating fluidized bed(CFB) boiler working principle Certificate picture

Our Circulating fluidized bed(CFB) boiler working principle 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.

About Circulating fluidized bed(CFB) boiler working principle company picture

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)

Pre product: Circulation fluid bed steam boiler technology in China

Next product: Biomass fuel for CFB power plant boiler technology in Thailand

Related products

Inquiry Products
Contact us

Email:[email protected]

Skype:zgboiler123

Telephone:0086-371-86678488

Address: NO.88 Science Road,High and New Technology Development District,Zhengzhou,China

Solution

New project

Biomass CFB Boiler Plant in Bahamas

In Bahamas, the biomass can be burned using conventional combustion technology like grate furnace or fluidized bed boilers. For power generation the biomass would be charged to the furnace of a steam boiler.Steam produces by the boiler will then drive a steam turbine generator to generate electricity. The typical capacity range for biomass power plants 1-20MW.

ZG Boiler Profiles
strenght image

Zhengzhou Boiler Co., Ltd (ZG Group), founded in 1945, is a joint-stock enterprise with A Grade Boiler design and manufacture license permits. Over 60 years' experience in Boiler design and manufacturing has rewarded us with an industrial boiler(circulating fluidized bed boiler, oil & gas fired boiler, chain grate boiler, waste heat boiler).

Back to top