4"12-Z 1 - part - usaid
4"12-Z 1 - part - usaid
4"12-Z 1 - part - usaid
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INTRODUCTION<br />
ENERGO SYSTEM:<br />
LOCATION:<br />
INSTALLED CAPACITY:<br />
COMMISSIONED:<br />
FUEL:<br />
LVIVENERGO<br />
60 KM SOUTH OF LVIV<br />
2400 MW (<strong>12</strong> X 200 MW)<br />
1965-1969<br />
GENERAL DESCRIPTION OF THE PLANT<br />
ANTHRACITE, GAS AND MAZUT<br />
Unit <strong>12</strong> is now under reconstruction including turbine repair, new HP and LP cylinders, and<br />
a new 99% efficient Russian electrostatic precipitator. The next precipitators for Unit 11 and<br />
Unit 7 reconstruction in 1995 will be Ukrainian manufacturer. The Unit <strong>12</strong> boiler has all<br />
critical pressure <strong>part</strong>s and membranes replaced and the steam drum checked, with an<br />
expected 20-25 year life extension. This will restore and upgrade the rating of Unit <strong>12</strong> to<br />
225 MW, and will be finished in April 1995.<br />
COAL FEED SYSTEM<br />
The Burshtyn power station has more than thirty (30) suppliers of anthracite coal located in<br />
the Ukraine, Donbas, Poland, Lublin, Russia, Kubits, and Kazakstan, so there is<br />
considerable variation in fuel characteristics. Generally, the coal has a high volatiles content<br />
of about 30%, an ash content of 24-55%, a moisture content of 7-20%, a sulfur content of<br />
1.5-3.7%, and a heating value of 2500-5000 kca1Ikg. Because of the importance of this plant<br />
for power export, there are two main coal conveyors from reclaim, one to each end of boiler<br />
house.<br />
Each of the twelve boilers has two raw coal bunkers which are fed from the tripper belts.<br />
Coal from each of the two bunkers is fed on a constant speed conveyor (except Unit 5 which<br />
is variable speed) to the ball mills, and the height of a gate on each conveyor can be varied<br />
to produce a given volumetric feed rate. Flue gas is fed to the ball mills to dry the coal.<br />
Pulverized coal from each ball mill is transferred to a cyclone separator and then from a<br />
pulverized coal bunker through motor driven rotary vane feeders to each of the sixteen (16)<br />
burners on a boiler. The speed of these rotary vane feeders can be varied to produce<br />
different coal feed rates.<br />
5906-021PAR.5/<strong>12</strong>19194 4