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SHXF Circulating Fluidized Bed CFB Boiler
Introduction

SHXF series CFB boiler is a large capacity boiler, the new type boiler makes big breakthrough on the technology of cyclone fluid combustion, cyclone separation structure & parametric design, and loop seal device. It is consist of combustion chamber, separator, fly ash circulating system, superheater, convection bank, economizer, and air preheater. The boiler inherits the original technology advantages, at the same time, makes big breakthrough on the technology of cyclone fluid combustion, cyclone separation structure & parametric design, and loop seal device. The thermal efficiency is about 5% higher than the other CFB boilers.

Fuels:Lignite,Bituminous Coal,Lean Coal, Anthracite

Applications:Power Plant, central heating,chemical industry etc

Structure

Technical Advanatges:

1. Available to Burn Low Grade Fuel


Longer Fuel Combustion Period. Front arch is higher and shorter than rear arch, 45° angle between the two arches, which can extend the time of flue gas combustion time, and enhance thermal transferring efficiency. It also can burn low calorific value coal such as brown coal, lean coal, and semi coke.


2. Durable And Stable Grates

It adopts Global Environmental Facility special slag removal technology, and small flake gate, to overcome technical problem such as grate flakes falling off and air leakage, so that the grate can be operated stably and the combustion efficiency is greatly improved. The boiler grate adopts double layers or single layer layout structure, which can meet the customers requirements better.


3. Double Cyclone Separator

After separated by the second cyclone, the fuel powder particles return to furnace for circulating combustion through the separate loop seal. The diameter of particles could be cut into 10μ by separator, improve the combustion efficiency.


4. Parametrization Design on Separator

Using the results of latest experiment, redesign the parameter of separator, optimize the line and size of cyclone separator, the separate efficiency improved greatly.


5. Bubbling Fluid Loop Seal Technology

Using the hood bubbling fluid integrate loop seal device, achieve the situation of bubbling fluid. It has the advantages of material feed steadily, convenient control, and avoid coking.


6. Cyclone Combustion Technology

Arrange cyclone combustion device in furnace, achieves cyclone fluidized circulating combustion, improve combustion efficiency.

 

7. Membrane water wall

The furnace, separator and loop seal device adopts membrane water wall, prevents the low efficiency caused by air leakage, low heat loss.

 

8. Anti wear design

The buried pipe adopts anti-wear steel with the special size and angle, and reduce the fluidization velocity, to reduce the wear. The high temperature resistant material is deposited on the water cooling wall of the separator, avoiding the abrasion of membrane wall.

 



Boiler System

CFB Boiler System

Auxiliary

CFB Boiler Accessories

Parameters

Model

Rated Evaporation

Rated Steam Pressure

Rated Steam Temperature

Water Temperature

Fuel

Factory Mode

t/h

BHP

(bar)

()

()

SHXF15-1.25-H

15

1149

12.5

194

105

LigniteBituminous CoalLean Coal, Anthracite

Field Assembly

SHXF15-1.6-H

15

1149

16

204

105

Field Assembly

SHXF15-2.5-H

15

1149

25

226

105

Field Assembly

SHXF20-1.25/350-H

20

1532

12.5

350

25

Field Assembly

SHXF20-1.25-H

20

1532

12.5

194

105

Field Assembly

SHXF20-1.6-H

20

1532

16

204

105

Field Assembly

SHXF20-2.5-H

20

1532

25

226

105

Field Assembly

SHXF35-1.25-H

35

2681

12.5

194

105

Field Assembly

SHXF35-1.6-H

35

2681

16

204

105

Field Assembly

SHXF35-2.5-H

35

2681

25

226

105

Field Assembly

SHXF75-1.25-H

75

5745

12.5

194

105

Field Assembly

SHXF75-1.6-H

75

5745

16

204

105

Field Assembly

SHXF75-2.5-H

75

5745

25

226

105

Field Assembly

 


Case
6T Coal Fired Boiler for Uzbekistan Railways
6T Coal Fired Boiler for Uzbekistan Railways
ModelChain grate boiler
ApplicationRailways
Capacity6 ton
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