ZOZEN is a steam boiler manufacturer in China.

Water tube condensing gas/oil fired boiler

Water tube condensing gas/oil fired boiler

Capacity:10-50 t/h

Pressure:0.7-2.5 Mpa

Fuel:Natural gas, coke oven gas, biogas, methanol

Temperature: 194-225°C

Applications: heat suppling, chemical, food, textile, printing and dyeing, cigarettes and tobacco, fodder, pharmacy, building materials, brewery, rubber, hospital etc.

Water tube condensing gas/oil fired boiler introduction

  SZS series boiler body is longitudinal 2-drum, d-type chamber combustion structure. The furnace is on right side and the convec-tion bank tube is on left side. The body is fixed on the body chassis by flexible supports in the middle and two ends of the lower drum, and it can secure to let the whole boiler body to expand sideways. Surround furnace there are narrow space membrane cooling tube wall. It is totally sealed and separated between the membrane wall on furnace left side and the convection bank tube. The rear part of convection tube bank is a tube-reducing staggered structure, and the front part is aligned structure. The flue gas generated from fur-nace combustion flows from furnace rear outlet to the end of combu-stion chamber convection tube bank area, and then turns from the front left of furnace to the spiral finned tube energy saver, and finally flows into ducting and through chimney emits to atmosphere.

Water tube condensing gas/oil fired boiler parameters
Rated evaporation 20 25 30 35 40 50
Rated working pressure 1.25/1.6/2.5 1.25/1.6/2.5 1.25/1.6/2.5 1.25/1.6/2.5 1.25/1.6/2.5 1.25/1.6/2.5
Rated steam temperature 194/204/225 194/204/225 194/204/225 194/204/225 194/204/225 194/204/225
Feed water temperature 20 20 20 20 20 20
Available Fuel   Natural gas,biogas,coke gas,light oil methanol,biodiesel etc.
Fuel consumption Natural gas
1440 1800 2160 2520 2880 3600
Light oil(kg/h) 1240 1550 1860 2170 2480 3100
Thermal efficiency(%) >98 >98 >98 >98 >98 >98

Notice: As the company's products continue to improve parameters of the above products will be continuously updated page listed for reference only.


Water tube condensing gas/oil fired boiler advantage
Boiler manufacturing process
  • The key processing technology like material preparation of steel tubes, circling, drilling of tube plate, etc are all adpot advanced CNC machining process to decrease the assemble stress and extend the boiler working life
  • Interior thermal insulation is adopted to flue gas duct and flue gas port to reduce the noise during the boiler operation
  • All convection tubes of high temperature area use vibrating proof fastener to provent the pipe orifice of convection tubes from fracturing
  • The inside of observation hole uses moulding high-alumina refractory and manhole cover sealing device to solve the problem of overheating of this part by constructed with refr actory bricks
  • Every piece of membrane wall between furnace and convection tubes use high temperature resistance stainless steel Cr25ni20. This avoid the breakdown of high temperature flue gas short circuit caused by using refractory materia
  • Impeller blasting and stoving varnish are done to boiler to make sure the boiler has good-looing appearance and anti-septic property
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.

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Email:   mayonghong@zozen.com

Whatsapp:  86 13506151306

Tele:  400-161-0099