SZL chain grate coal-fired boiler

Short Description:

Rated evaporation : 4.2-21 MW; 

Pressure ≤1.6MPa;

Bituminous coal, lean coal, anthracite;

Food Industry, Heating Supply


Introduction

Advantages

Boiler system

Paramers

Case

Product Tags

SZL chain grate coal-fired boiler has the advantages of high efficiency, strong overload capacity and wide adaptability of coal type. The boiler is mainly composed of upper and lower drum, convection tube bundle, water wall tube,downcomer and header. The upper and lower drum are arranged longitudinally. The combustion equipment is chain grate with stepless speed change device. The boiler body is composed of vertical upper and lower drum and convection tube bundle. A water-cooled wall is arranged around the combustion chamber to absorb the radiant heat of the furnace. A dense convection tube bundle is arranged between the upper and lower drum at the rear. After the high temperature flue gas after combustion scours the convection heating surface horizontally, it is led to the separately arranged economizer, and finally enters the dust remover and is discharged through the chimney. The left and right sides of the body are full membrane water-cooled wall structure, the boiler has good sealing performance and small heat loss, so as to ensure the safe and efficient operation of the boiler.

Application fields: thermal power company, textile factory, chemical factory, food factory, pharmaceutical factory, brewery, washing factory, etc.

packing (5) packing (2)


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  • 1. The boiler adopts the structure of anti-coke collector box, which is located on both sides of the grate and is directly in contact with the burning material layer. As the main heat-absorbing surface at the bottom of the furnace, the purpose is to absorb some heat, adjust the temperature of the fuel layer, prevent coking, and cool the coking slag, which is not bonded to the side wall.

    2. Water cooling device (More than 10 ton boiler) is arranged at the coal gate of the boiler to reduce the temperature here and prevent burnt the coal gate. The combustion of the boiler is more stable.3. Compact structure, compared with the same type of boiler, small size, saving boiler room infrastructure investment.

    3. Runs steadily and convenient adjustment.

    4. The high efficiency and energy saving furnace arch of heat resistant concrete is adopted in the furnace, which improves the fuel ignition condition, adopts independent air chamber, achieves reasonable air distribution, and forms an air power field favorable to combustion in the furnace, thus enlarging the adaptability of fuel.

    5. The smoke window at the outlet of the boiler arch has a certain dedusting effect.

    Model

    Rated thermal power (MW)

    Rated working pressure(Mpa)

     Rated outlet water temperature(℃)

    Rated inlet water temperature(℃)

    SZL2.8-0.7/95/70-AⅡ

    2.8

    0.7

    95

    70

    SZL4.2-1.0/115/70-AⅡ

    4.2

    1.0

    115

    70

    SZL5.6-1.0/115/70-AⅡ

    5.6

    1.0

    115

    70

    SZL5.6-1.25/120/70-AⅡ

    5.6

    1.25

    120

    70

    SZL7-1.25/115/70-AⅡ

    7.0

    1.25

    115

    70

    SZL7-1.6/130/70-AⅡ

    7.0

    1.6

    130

    70

    SZL14-1.25/115/70-AⅡ

    14

    1.25

    115

    70

    SZL14-1.6/130/70-AⅡ

    14

    1.6

    130

    70

    SZL21-1.25/120/70-AⅡ

    21

    1.25

    120

    70

    SZL21-1.6/130/70-AⅡ

    21

    1.6

    130

    70

    SZL29-1.6/130/70-AⅡ

    29

    1.6

    130

    70

    SZL29-1.25/120/70-AⅡ

    29

    1.25

    120

    70

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