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InfoGas & oil fired boiler

4.2MW gas-fired hot water boiler 1.0 MPa, supply and return water temperature 95/70℃, NOx<30mg/m3

2025-07-17
item number item name manufacturer name Specifications quantity unit  
one, The main material of the process part        
1 Gas hot water boiler   Power 4.2MW, equipment pressure 1.0 MPa, supply and return water temperature 95/70℃ including burner, NOx<30mg/m3 2 tower
1-1 Flue gas condenser   Supporting 4.2MW boiler 2 tower
1-2 4.2MW boiler supporting sound insulation cover   Supporting 4.2MW boiler 2 set
2 primary circulation pump   Q=430m3/h, H=32mH2O P=55kW, frequency conversion 2 tower
3 primary water pump   Q=16m3/h, H=34mH2O P=3kW, frequency conversion 2 tower
4 Automatic water softener   Softened water volume 15m3/h 1 set
5 soft water tank   V=10m3，3.0m×2.0m×2.0m 1 tower
6 Vertical decontamination device   DN300 PN10, straight type 1 tower
two, Main materials of hot water system        
1 Y type decontamination device   DN65  PN10 1 indivual
2 butterfly valve   DN300  PN16 D341H-16 8 indivual
      DN150  PN16 D341H-16 4 indivual
3 Flange check valve   DN300  PN16 H44H-16C 2 indivual
      DN250  PN16 H44H-16C 1 indivual
      DN65  PN16 H44H-16C 2 indivual
      DN40  PN16 H44H-16C 2 indivual
4 Manual control valve   DN200  PN16 H40H-16 2 indivual
5 Flange globe valve   DN200  PN16 J41H-16C 3 indivual
      DN65  PN16 J41H-16C 11 indivual
      DN32  PN16 J41H-16C 2 indivual
6 Flange metal soft joint   DN300  PN10 4 indivual
      DN65  PN10 4 indivual
7 Spring micro-open safety valve   DN32 A47H-16C 1 indivual
8 head size   DN300/DN250 6 indivual
      DN65/DN50 4 indivual
9 backflow preventer   DN65 1 indivual
10 cold water meter   DN65 2 indivual
11 Industrial Bimetallic Thermometer   0-100°C 6 indivual
12 Spring Tube Pressure Gauge   0-1.0MPa 13 indivual
13 seamless steel pipe   ∅325×8 150 rice
      ∅273×7 20 rice
      ∅219×6 30 rice
      ∅159×4.5 30 rice
      ∅108×4 70 rice
      ∅76×3.5 50 rice
      ∅57×3.5 20 rice
      ∅45×2.5 30 rice
      ∅38×2.5 30 rice
14 Steel for hangers     180 kg
15 Aluminum silicate     8 m3
16 0.5mm galvanized iron sheet     200 m2
17 Exhaust valve   DN20 PN16 10 indivual
18 floor drain   DN100 3 indivual
19 Ductile Iron Pipe   DN100 20 rice
  Process piping installation supporting services        
1 Valve insulation   1. Insulation material: aluminum silicate
2. Insulation thickness: see design instructions for details
3. Valve specifications: see design drawings for details		 1 m3
2 Flange insulation   1. Insulation material: aluminum silicate
2. Insulation thickness: see design instructions for details
3. Flange specifications: see design drawings for details		 1 m3
3 Weld X-ray inspection   1. Name: X-ray flaw detection of weld seam
2. Film specification: 80mm*300mm
3. Tube wall thickness: within 16		 100 open
4 Pipeline corrosion protection   1. Rust removal level: St3 very thorough manual and power tool rust removal
2. Brushing (spraying) type: Hongdan epoxy anti-rust paint
3. Brushing (spraying) times, paint film thickness: two times		 260 m
5 Corrosion protection for general steel structures   1. Rust removal level: St3 very thorough manual and power tools
2. Brushing (spraying) variety: Hongdan epoxy anti-rust paint
3. Number of brushing (spraying) times, paint film thickness: see design instructions for details		 180 kg
three, The main material of the flue gas system        
1 Double-layer insulation stainless steel chimney   DN600, height 20m 2 seat
2 round flue   Inner diameter ∅600 δ=5mm 4 m
3 90 elbow   DN600 R=650mm δ=5mm 2 indivual
4 chimney muffler   DN600 2 tower
5 Accident exhaust fan in boiler room   Low-noise DFBP35－11-5.6# explosion-proof axial flow fan, single air volume 5361m3/h 2 tower
6 Inlet muffler for boiler room   The size is 1000×630, and the maximum air volume of a single unit is 8500m3/h 2 tower
Four, heating system        
1 Steel round two-column radiator   GZY2-1.0/6-1.0 18 pieces 16 Group
2 Galvanized steel   DN40 80 rice
      DN32 80 rice
      DN20 80 rice
3 ball valve   Q11T-16 DN15 32 indivual
4 Shut-off valve   J11T-16 DN40 2 indivual
5 Auto exhaust valve   ZP-II DN32 6 indivual
  Heating pipe installation supporting services        
1 Pipe oiling   1. Rust removal level: St2 Thorough manual and power tool rust removal
2. Paint type: anti-rust paint
3. Number of times of brushing, paint film thickness: see design instructions for details		 240 m
4.2MW ,gas-fired hot water boiler, 1.0 MPa
Pre: List of 2 sets of 6 ton gas steam boiler host and auxiliary equipment Back to list Next: Equipment configuration list for 2 sets of 4.2MW gas-fired hot water boilers in the heating company

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