Technical parameters:
1) Rated evaporation: 35MT/h
2) Rated vapor pressure: 3.82MPa
3) Rated vapor temperature: 450
oC
4) Vapor working pressure in the boiler: 4.21MPa
5) Feeding water temperature: 150
oC
6) Feeding water pressure: 4.61MPa
7) Hot air temperature: 141
oC
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: >1,200
oC
12) T2: ≥1,280
oC
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%
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.
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