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鼓泡流化床锅炉

燃料灵活性低维护

鼓泡流化床(BFB)锅炉

Rayonier Fernandina工厂With an experience base of more than 200 BFB units worldwide, B&W’s BFB boilers are helping the world realize the promise of clean energy from a wide variety of fuels.

Our BFB boilers are designed to allow a wide range of fuels to be burned, 单独或组合. The ability to utilize various fuel sources and types provides owners with the flexibility to take advantage of opportunity fuels and control fuel costs. This is necessary because fuel properties vary widely. 例如, biomass fuels have a wide range of moisture and heating values depending upon their source and the time of year.

BFB boilers can also be an integral component of the world’s decarbonization efforts. By combining traditional bioenergy production, such as B&W的鼓泡流化床锅炉, with carbon 捕获 and sequestration technologies, energy can be produced with a net-negative carbon intensity (CI) output. Read more about our BECCS capabilities.

B&W的优势

B&W’s bubbling fluidized-bed boiler is designed with reliability in mind. Several features combine to provide low maintenance costs, high availability and long-term reliability:

  • An open bottom design permits easy removal of oversized or foreign material.
  • 一个水冷, gas-tight lower furnace eliminates the potential for gas leaks caused from refractory damage.
  • Bottom-supported hoppers remove load from the boiler, 降低资本要求, and reduce potential mechanical stresses between water-cooled and non-cooled components.
  • Rapidly responds to changes in fuel and steam demands.

Incorporated in our design are these features to reduce maintenance costs:

  • 无易损件
  • 无活动部件
  • 没有水冷螺钉或梁
  • 无炉渣回喷系统
  • 长效泡沫帽

 

BFB底料斗表面

敞底炉 – results in complete debris removal with lower capital costs and maintenance expenses.

床下除灰系统 – consists of bottom-supported hoppers which isolate the bubbling bed foundation and steel from the boiler steel. This design is considered an advantage and facilitates retrofitting an existing top-supported unit to a BFB.

Bubble cap and air distribution system design – allows removal of large tramp material while durable construction rarely requires replacement.

BFB锅炉的可行燃料

生物质-to-Energy Production - Fuel Types

  • 生物质
    • 木材废料
    • 树皮芯片
    • 稻草
    • 甘蔗废料
    • 农业废弃物
  • 纸 mill and recycled paper facility sludge
  • 污水污泥
  • 轮胎衍生燃料(混合)
  • 石油
  • 天然气
  • 煤(组合)
  • 泥炭

365体育nba在线直播 benefits with BFB technology

氮氧化物(NO)X) - Due to the low temperature combustion processes that occur in the bubbling bed, NOX generation is inherently lower than that of a stoker-fired boiler. A selective catalytic reduction (SCR) system can be located before dust removal equipment to further reduce NOX.

Carbon monoxide (CO) and volatile organic compounds (VOC) - Due to the intimate contact between the bed material and fuel, improved fuel burnout occurs. This results in very low CO and VOC 排放.

二氧化硫(SO)2) - The intimate contact between the fuel and bed material allows for in-bed 捕获 of SO2. When burning biomass in combination with sulfur fuels, alkali normally present in the biomass will result in reduced SO2. Limestone can also be added to the bed material for greater SO2 捕获.

微粒, Improved carbon burnout compared with a stoker boiler reduces the potential for fires in back-end environmental equipment. This allows for the use of a baghouse to meet lower particulate requirements.

规范

设计特点:

  • 顶支撑或底支撑
  • 单鼓或双鼓设计
  • 新的或改造锅炉应用
  • 提供减少SO的选项2 也没有X 排放
  • Superior to other technologies for burning wet wood-based fuels – between approximately 2800 and 3500 Btu/lb HHV (6513 and 8141 kJ/kg) without support fuels

容量:

  • Bottom-supported: Up to 225,000 lb/h (28.4公斤/秒)
  • Top-supported: From 225,000 to 1,000,000 lb/h (28.4 ~ 126公斤/秒)
  • 蒸汽压力:至2600 psig (17).9 MPa)
  • 蒸汽温度:至1000F (538C)
B&W底支撑BFB锅炉

B&W底支撑BFB锅炉

下载BFB小册子(PDF)

BFB人造纸

 

 

B&W顶支承BFB锅炉

B&W顶支承BFB锅炉

BFB锅炉成功案例

美国国旗
美国俄勒冈州
Open-Bottom Bubbling Fluidized-Bed Technology Case Study
Bubbling fluidized-bed (BFB) systems are attractive when wide fuel flexibility is required, and for firing high moisture and lower heating value fuels. B&W’s solution – an open-bottom bubbling fluidized-bed unit, was the first such B&W设计在北美.
查看案例研究
美国国旗
美国
From Black Liquor to Sludge Case Study
365体育比分官网(B&W) has extensive experience with boiler conversions and modifications, including extensive refurbishments of older recovery boilers to BFB conversion while reusing existing buildings and ancillary equipment.
查看案例研究