SFG 130t/h Circulating Fluidized Bed Boiler for Clothing Manufacturing Machinery Maintenance

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Product Overview


Product Overview

Circulating Fluidized Bed Boiler
Circulating fluidized bed boiler adopts circulating fluidized bed combustion (CFBC) technology, that is, the fuel is burned in fluidized state, and the materials flying out of the furnace are collected by the gas-solid separator and returned to the furnace for circulating combustion and utilization. Circulating fluidized bed combustion is a high-efficiency, low-pollution clean combustion technology with the advantages of wide fuel adaptability, excellent environmental performance, wide range of load regulation and easy comprehensive utilization of ash, etc. It is one of the most practical and feasible high-efficiency and low-pollution combustion equipment at present.
In order to seek breakthroughs, our company has developed the latest generation of safe, high-efficiency, energy-saving and environment-friendly circulating fluidized bed boiler products based on our own R&D and production of circulating fluidized bed boilers, and in-depth cooperation with Tsinghua University and Chinese Academy of Sciences. Meanwhile, we have strengthened the docking of relevant national energy-saving and environmental protection policies, and combined with domestic advanced circulating fluidized bed boiler operation data.

Product name
SFG Circulating Fluidized Bed Boiler
Hotels, hospitals, medicine industry, restaurants, food industry, papermaking, heating, schools, mining, farms, clothing,manufacturing, machinery maintenance
Natural Circulation
Water Tube

Technical Advantages

Unique Structural Design

1. Steady state design theory to ensure various performances
The steady state design theory provides a theoretical basis for the structural design and performance calculation of the boiler. After the design according to the steady state theory, the layout of heating surfaces at all levels of the boiler is more reasonable, the combustion is more complete, the temperature field is more uniform, and the operating parameters are highly consistent with the design parameters.

2. Flow state reconstruction theory to reduce boiler power consumption and wear
Flow State reconstruction theory clarifies the quantitative relationship between bed material and various parameters and indexes of boiler operation. For different fuels, the fluidized bed boiler can regulate the proportion of coarse and fine particles in the circulating materials by improving the separation efficiency of the separator, and reduce the bed stock within a certain range for low bed pressure operation.
The pressure head of the primary and secondary air fans of the boiler reduces, and the power consumption of the fans decreases. The wear of the furnace chamber decreases significantly after the bed inventory is reduced and the circulating ash becomes finer. Through the flow state reconstruction, the fan power consumption of the latest generation circulating fluidized bed boiler can be reduced by 30% compared with the traditional boiler, and the boiler’s own power consumption can be the same as that of the pulverized coal boiler.

3. Low nitrogen, environmental protection and high efficiency desulfurization
The latest generation of circulating fluidized bed boiler has controlled the initial NOx emission of the boiler within 50-120mg/Nm3 by means of flow state reconstruction theory, low temperature combustion, grading air supply technology, air distribution optimization design and other methods, and the ultra-low emission can be achieved only when SNCR is used. At the same time, when Ca/S is 1.8-2, the desulfurization efficiency of limestone in the furnace can reach more than 90%-98%, saving a lot of investment costs and operation costs for users.

4. High-efficient separating technology technology to guarantee the boiler performance
High-efficient separating technology is the guarantee for the realization of steady state design and flow state reconstruction theory.
The latest generation of fluidized bed boiler has achieved a separation efficiency of more than 99.6% by optimizing the structure of the separator, and the separation diameter d50 reaches 10-15μm and d99≤100μm.
High efficienct separation technology effectively reduces material granularity, improves material concentration in the upper part of the furnace, reduces wear and tear, improves combustion efficiency, improves limestone utilization and furnace desulfurization efficiency. The latest generation of circulating fluidized bed boilers can run for more than 8,200 hours per year, and the overhaul period is more than 5 years, and its reliability is guaranteed.

5. Novel funnel cap and air distributor
The latest generation of circulating fluidized bed boiler adopts the company’s new patented technology of funnel cap, with more uniform air distribution, stronger fluidization, no stratification of bed material, and effective prevention of ash dumping, with self-cleaning function of funnel cap and simple installation and maintenance.
Optimizing the design of the air distribution plate and strengthening the air distribution at the four corners of the air distribution board and around the wall to fundamentally solve the uneven fluidization at the four corners and around, and the problem of local high temperature and local low temperature coking. Changing the arrangement of the air cap at the slag drop to achieve the effect of not blocking the slag, releasing the slag more smoothly and selecting the slag more finely.

Energy Conservation and Environmental Protection

1.Wide adaptability of fuel
A large amount of bed material is laid on the air distribution plate of circulating fluidized bed boiler. The bed material has strong heat storage capacity and can play a good role in ignition and stable combustion. It can burn all kinds of low-quality bituminous coal, anthracite, lean coal, lignite, coal gangue and slime that cannot be burned by other furnace types.

2.High combustion efficiency
The boiler adopts fly ash separation and recovery circulating combustion technology, and the combustion efficiency can reach more than 99%.

3.Efficient desulfurization
The boiler adopts low-temperature combustion technology, which can realize limestone desulfurization in the furnace, and the desulfurization efficiency can reach 90-98%.

4.Low nitrogen oxide (NOx) emission
The boiler adopts low NOx combustion technology, and the initial NOx emission of the boiler can be controlled within 50-120mg/Nm³.

5.Good activity of ash slag, easy to realize comprehensive utilization, and no secondary ash slag pollution
The ash discharged from the boiler is an ideal raw material for cement products, and can also be used for the extraction of rare metals in the ash slag.

6.Wide range of load regulation and fast load regulation
Adopting fluidized combustion, the boiler load can be flexibly adjusted by controlling coal feed and air volume, with fast load adjustment speed and wide adjustment range, and it can burn normally in the range of 30%-110% load.
In China’s current increasingly stringent environmental protection requirements, the coal type is variable, the proportion of raw coal direct combustion is high, the contradiction between coal combustion and environmental protection is increasingly prominent, circulating fluidized bed boiler has become the preferred environmental protection and energy-saving products.

More Products

Product Categories

1.Coal fired boiler:
≤ 480t/h various ultra-high pressure, high, medium and low pressure boilers

2.SFG series power station boiler:
35t/h various types of sub-pressure and medium pressure boilers
75t/h various types of high pressure, sub-pressure and medium pressure boilers
130t/h various ultra-high pressure, high pressure, sub high pressure and medium pressure boilers
260t/h various types of ultra-high pressure, high-pressure and sub-pressure boilers
480t/h various ultra-high pressure and high pressure boilers

3.DHX series steam boiler:
45t/h ~ 130t/h various low pressure boilers

4.SHX series steam boiler:
10t/h ~ 35t/h various low pressure boilers

5.QXX series hot water boiler:
7MV ~ 168MV various low pressure hot water boilers

Company View

Jiangsu Sifang Boiler Co., Ltd.
Jiangsu Sifang Boiler Co., Ltd. was established in 1998, and is the first ASME accredited special equipment manufacturing enterprise of China Special Equipment Inspection and Research Institute. Through technological and innovative development, our company has become the leading boiler industry in China.
Our company is located in Xuzhou city, a major city in Jiangsu province, China, which is the birthplace of Han culture and awarded as UN Livable City. Xuzhou, as the second largest Chinese railway hub, 582 km away from Shanghai, is not only an economic, scientific, cultural, financial, healthcare and trade center, but also an important node city of the country’s Belt and Road Initiative.
Our company covers an area of about 170,000 square meters and has more than 700 employees, including more than 200 people with professional and technical titles, and more than 70 people with middle and senior technical titles.
We have the manufacturing license of Class A boiler and Class A1 pressure vessel, ASME certification qualification, boiler installation, alteration, repair and maintenance license, and have passed IO9001 quality management system certification, ISO14001 environmental management system certification, ISO45001 occupational health and safety management system certification. Moreover, we has more than 40 technical patents of boiler products.
Main products: oil-fired (gas-fired) boilers, fluidized bed boilers (coal-fired, biomass-fired), pulverized-coal fired boilers, corner-tube boilers (coal-fired, biomass-fired), various types of waste heat utilization boilers for waste and hazardous waste incineration, large intelligent control autoclave and other products.

Our Team



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Generally, it will take 7 to 30 days after receiving your advance payment. The specific delivery time depends on the items and the quantity of your order.

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