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.
Boiler body uses the forced circulation in the high temperature area to make sure all heating areas can be cooled down and avoid vaporization; The explosion door and flame detector are equipped for safe and reliable operation. Comb plates are used between both sides of boiler and tube bundle to avoid leakage of condensate and gas caused by using refractory concrete as sealing material. Air proof test is done before delivery in the factory to guarantee any gas leakage problem.
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.
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.
| Model | Rated evaporation（t/h） | Rated working pressure（MPa） | Rated steam temperature（℃） | Thermal efficiency（%） |
| SZS20-1.25-Q.Y | 20 | 1.25 | 194 | >98 |
| SZS20-1.6-Q.Y | 20 | 1.6 | 204 | >98 |
| SZS20-2.5-Q.Y | 20 | 2.5 | 225 | >98 |
| SZS25-1.25-Q.Y | 25 | 1.25 | 194 | >98 |
| SZS25-1.6-Q.Y | 25 | 1.6 | 204 | >98 |
| SZS25-2.5-Q.Y | 25 | 2.5 | 225 | >98 |
| SZS30-1.25-Q.Y | 30 | 1.25 | 194 | >98 |
| SZS30-1.6-Q.Y | 30 | 1.6 | 204 | >98 |
| SZS30-2.5-Q.Y | 30 | 2.5 | 225 | >98 |
| SZS35-1.25-Q.Y | 35 | 1.25 | 194 | >98 |
| SZS35-1.6-Q.Y | 35 | 1.6 | 204 | >98 |
| SZS35-2.5-Q.Y | 35 | 2.5 | 225 | >98 |
| SZS40-1.25-Q.Y | 40 | 1.25 | 194 | >98 |
| SZS40-1.6-Q.Y | 40 | 1.6 | 204 | >98 |
| SZS40-2.5-Q.Y | 40 | 2.5 | 225 | >98 |
| SZS50-1.25-Q.Y | 50 | 1.25 | 194 | >98 |
| SZS50-1.6-Q.Y | 50 | 1.6 | 204 | >98 |
| SZS50-2.5-Q.Y | 50 | 2.5 | 225 | >98 |
| SZS65-1.25-Q.Y | 65 | 1.25 | 194 | >98 |
| SZS65-1.6-Q.Y | 65 | 1.6 | 204 | >98 |
| SZS65-2.5-Q.Y | 65 | 2.5 | 225 | >98 |
| SZS75-1.25-Q.Y | 75 | 1.25 | 194 | >98 |
| SZS75-1.6-Q.Y | 75 | 1.6 | 204 | >98 |
| SZS75-2.5-Q.Y | 75 | 2.5 | 225 | >98 |
| SZS100-1.25-Q.Y | 100 | 1.25 | 194 | >98 |
| SZS100-1.6-Q.Y | 100 | 1.6 | 204 | >98 |
| SZS100-2.5-Q.Y | 100 | 2.5 | 225 | >98 |
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