Different Types of Mills
Different Types of Mills
Different Types of Mills
Boiler Products
Boiler Products
l
Germany USA
8
30
France
Vlizy
Bammental Stuttgart
Japan
Kobe
February 2003
l l l l l
ALSTOM Stuttgart,Germany former EVT ALSTOM Windsor, USA former Combustion Engineering ALSTOM Velizy, France former Stein Industrie ALSTOM Lisle, USA former Raymond ALSTOM Brno, CZ fromer ENS
033 238p
l l l
Vertical mills or Bowl mills Horizontal mills or Tube mills Beater wheel mills,
033 239p
Bowl Mill SM 19
036 135p_quer
033 240p
036 138b_quer
Bowl Journal
Main components
l
solid cast-iron construction, no vertical shaft bowl wear segments with hard welded overlay l with high wear resistent rollers for long service life roller liners can be rewelded several times bearings dimensioned for long lifetime (> 100000 h) dip lubrication system for bearing lubrication easy maintenance for the journals by separate swiveling of each journal l
Classifier
4 classifier outlets for homogenous coal-air distribution to the burners flow optimised classifier design to avoid coal deposits in the classifier
Housing
optimised aerodynamic design to prevent coal dust deposits journal cover cast iron construction to have optimised aerodynamic design
Grinding forces
raising of grinding forces is done by hydraulic cylinders. Hydraulic forces can easily adjusted to different coals by setting of hydraulic pressure
Gearbox
planetary gearbox which con be removed separately
036 158p
036 167p
Grinding Journal
Mill Housing
Hydraulic Cylinder
Foundation
036 164p
Bracket
NEW
Dynamical Separator Capacity Fineness Coal Hu Hg w a 105 t/h 10 - 25 % R 90 m
Bowl - Motor
Bowl - Motor
036 165p
036 155a_quer
036 155b_quer
February 2003
011 283p
0,0 m
Upper air
Oil burner
031 010p
035 001p
035 238p_quer
035 243p
035 230p
February 2003
Tube Mills
BBD
BBD
25 36 34 48 38 54 40 60 43 66 47 60 47 72
2 450 3 740 300 15 3 350 4 940 770 40 3 750 5 540 1 120 58 3 950 6 140 1 530 68 4 250 6 740 1 800 96 4 650 6 140 2 200 102 4 650 7 340 2 400 122
France India India China RSA RSA China China Denmark Philippines RSA India India India India India India India RSA India India India India India India India
40 60 40 60 40 60 40 60+ 43 43 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 66 66 60 60 60 60 60 60 60 60 72 72 72 72 72 72 72 72
x 400 MW x 660 MW x x x x x x x x x x x x x x x x 666 MW 210 MW 210 MW 210 MW 210 MW 210 MW 210 MW 210 MW 660 MW 500 MW 500 MW 250 MW 500 MW 500 MW 250 MW 250 MW
255
total:
+ +
cyclone stack
classifier
1 OUTLET
ball mill hot gas generator exhaust fan
vent fan
vent filter
High availability Low maintenance cost Constant capacity versus time Hard or abrasive coals efficiently ground Instantaneous response to load change Low air to coal ratio Wide range of coal possible Unaffected by foreign material