Coal Chain-Grate Power Station Boiler:
1 CFB boiler from15t-50t
2 fuel:coal,bagasse ,rice husk,straws
3. first class boiler
Coal Chain-Grate Power Station Boiler (WB-35 / 3.82-M)
This boiler is a medium-pressure single-drum natural cycle boiler laid in ∩-shape. It is installed with strobe coal scuttle and veering squama non-coal-leakage chain-grate burning equipment. The hearth is surrounded with water-cooling wall pipe, and the exit of the hearth is installed with loose residue congealed pipe. The horizontal flue is equipped with vertical convection super-heater. It is divided into high temperature and low temperature sections according to the steam flowing directions. The screwed pipe attemperator is used to regulate steam temperature, which is in the center of high temperature and low temperature section super-heater. The direct well of the boiler tail is installed with single steel tube coal economizer and pipe air pre-heater. The residue discharging equipment is with Martin tap tole with disc extruder available. The entire water capacity of the boiler is 30MT.
Technical parameters:
1) Rated evaporation: 35MT/h
2) Rated vapor pressure: 3.82MPa
3) Rated vapor temperature: 450oC
4) Vapor working pressure in the boiler: 4.21MPa
5) Feeding water temperature: 150oC
6) Feeding water pressure: 4.61MPa
7) Hot air temperature: 141oC
8) Continuous waste discharging rate: 2%
9) The designed efficiency of the boiler set: 80%
Applicable fuel specifications:
1) Designed fuel: lean coal (soft coal is also available)
2) Cy: 58.21%
3) Hy: 2.91%
4) Oy: 2.51%
5) Ny: 1.64%
6) Sy: 0.68%
7) Ay: 26.57%
8) Wy: 7.48%
9) Vr: 16 - 18%
10) QyDW: 21,094kJ/kg (5,038kcal/kg)
11) T1: >1,200oC
12) T2: ≥1,280oC
13) T3: ≥400
14) Calculated fuel consumption: Bj=5,053kg/h
15) Max. coal grain dimensions: 40mm, 0 - 3mm<30%, 0 - 0.1mm<2.5%
