SZS Gas-fired hot water boiler

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  SZS Series Boiler is double drums, longitudinal arranged, "D" type chamber structure. Furnace is on right side and convection tube bundle is on the left. The body is fixed on the basement by middle and both end flexible supports and make the boiler to expand horizontally to sideways. Around furnace is membrane water cooling tube wall. Furnace and tube bundle is totally separated by the membrane water tube cooling wall at the left side of the furnace. The back part of bundle is sparse shift structure, front part is aligned structure. Smoke from furnace outlet enters re-burning chamber, bundle area, and then from left front part enters spiral fin coil economizer and condenser, finally discharged to atmosphere through chimney.

  • Parameter
  • Characteristics
  • System flow chart
  • Related Case
 
Items
Model
SZS7-1.0/115/70-Q SZS10.5-1.0/115/70-Q SZS14-1.25/115/70-Q SZS17.5-1.25/115/70-Q SZS21-1.25/130/70-Q SZS29-1.25/130/70-Q SZS46-1.6/130/70-Q SZS58-1.6/130/70-Q SZS70-1.6/130/70-Q SZS116-1.6/130/70-Q
Rated thermal power(MW) 7.0 10.5 14.0 17.5 21.0 29 46 58 70 116
Rated working pressure(MPa) 1.0 1.0 1.25 1.25 1.25 1.25 1.6 1.6 1.6 1.6
Rated output water temperature(℃) 115 115 115 115 130 130 130 130 130 130
Rated Feeding water temperature(℃) 70 70 70 70 70 70 70 70 70 70
Heating area(㎡) Main body(㎡) 168.0 220.0 245.30 284.40 394.75 428.1 1065.9 1225.7 1408.4 6164.8
Condenser (㎡) 164.0 306.0 527.0 645.1 738.3 990.8 985.3 1292.5 1642.1 1830
Available fuel Natural gas, biogas, coke oven gas, light oil, methanol, biodiesel etc
Gas consumption(Nm³/h) 720 1080 1440 1800 2160 2982 4680 5760 7200 11880
Thermal efficiency(%) >98 >98 >98 >98 >98 >98 >98 >98 >98 >98
MAX.transportation weight(t) 42.0 48.0 52.5 57.5 65.0 72.5 散件12.6 散件13.8 散件16 散件20
MAX. transportation dimension LxWxH(m) 7.87x3.40x3.34 8.85x3.85x3.93 8.51x3.85x3.75 9.31x3.77x3.75 10.10x4.13x4.15 10.90x4.13x4.15 11.00xΦ1.45 11.10xΦ1.46 12.00xΦ1.66 12.50xΦ1.66

01

Boiler welding process
The boiler vertical and circular seam adopts advanced unionmelt welding process to ensure the welding quality . All the vertical and circular seams will be done 100% radiographic inspection. Boiler welding process

02

Combustion chamber
Due to combustion chamber applying whole membrane water cooling structure and adopted micro-positive pressure combustion , there is no smoke leakage and there is no pollution in operation environment . Combustion chamber

03

Furnace insulation
Adopt high-class aluminium silicate fibre . Use refractory mortar to keep the furnace temperature under 45℃ and control heat loss effecient. Furnace insulation

04

Convenience
Thera are manholes on front and back side of both bundle and inspection doors on back side of boiler, which are easy to open for inspection and cleaning inner part.Convenience

05

longer lifespan
  • Membrane structure of Front and back wall is used for boiler body, which highly increased their lifespan to over 20 years.
  • The key part such as material cutting, rolling, drilling are proceeded by advanced CNC machining process to reduce the assemble stress and extend boiler working lifetime.
  • flutter prevention fastener is used for high temperature part convection tube, which avoid bundle tube cracking problem.
  • Longitudinal and girth joint adopt advanced automatic submerged-arc welding for good welding quality. All longitudinal and girth joint will have 100% radiographic inspection.
  • longer lifespan

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    SZS Gas-fired hot water boiler-System flow chart

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