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SZS series gas-fired(oil-fired) boiler

SZS series boiler is designed with longitudinal double drums and " D " type chamber structure. Furnace is placed on the right and convection tube bank is on the left, super heater is arranged at convection tube bank. The body is fixed on the basement by middle and both end flexible supports and make the boiler expand horizontally sideways. Around the furnace is membrane water cooling tube wall. Furnace and tube bank are 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, convection tube bank area and then from left front part enters spiral fine coil economizer and condenser, and finally is discharged to atmosphere through chimney.

1 . Manholes are placed on the front and back side of drums and inspection doors on back side of boiler easy to open for inspection and clean inner and outer parts.

2 . Big combustion chamber equipped with Low emission combustion burner effectively reduce the NOx to 30mg/m3. Smoke duct and smoke outlet use internal insulation to reduce operating noise.

3 . Combustion chamber uses full membrane water cooling wall structure and pressurized combustion without smoke mixture.

Technical advantages

4 . Membrane structure are used in the front and back wall for boiler body and highly increased their lifespan to over 20 years.

5 . The key processes including material cutting, rolling, drilling are done by advanced CNC machining process to reduce the assembly stress and extend boiler service lifetime.

6 . Longitudinal and girth joint adopt advanced automatic submerged-arc welding for good welding quality. All longitudinal and girth joint will be tested by radiographic inspection.

Product parameters

ModelRated evaporation(t/h)Rated working pressure(MPa)Rated steam temperature(℃)Thermal efficiency(%)
SZS20-1.25-Q.Y201.25194>98
SZS20-1.6-Q.Y201.6204>98
SZS20-2.5-Q.Y202.5225>98
SZS25-1.25-Q.Y251.25194>98
SZS25-1.6-Q.Y251.6204>98
SZS25-2.5-Q.Y252.5225>98
SZS30-1.25-Q.Y301.25194>98
SZS30-1.6-Q.Y301.6204>98
SZS30-2.5-Q.Y302.5225>98
SZS35-1.25-Q.Y351.25194>98
SZS35-1.6-Q.Y351.6204>98
SZS35-2.5-Q.Y352.5225>98
SZS40-1.25-Q.Y401.25194>98
SZS40-1.6-Q.Y401.6204>98
SZS40-2.5-Q.Y402.5225>98
SZS50-1.25-Q.Y501.25194>98
SZS50-1.6-Q.Y501.6204>98
SZS50-2.5-Q.Y502.5225>98

Technology Center

Our products have been sold to more than 100 countries and regions and set up offices in many countries to ensure that they serve customers at the first time.

ZOZEN boiler covers an area of 150 thousand square meters, with an annual production capacity of 2000 industrial boilers and 25000 tons of steam.

ZOZEN is an AQSIQ approved boiler and pressure vessel manufacturer. We hold the ASME "S" and "U" Certificates and have earned ISO9001:2000 Certification.