A 1000-MW coal-fired unit commissioned in Zouxian Power Plant

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At 14:40:00,the load went up to 40 MW:the mill No.6 and the small oil gun No.6 were commissioned;the output of e mill came up to 30%;the large oil gun No.2 stopped.At 1 6:00:00, e load went uD to 90 MW;te mil No.3 was put nto operation; e large oil gun No.4 stopped.At 16:50:00,te unit parameters were fxed;the smal oil guns were shut down.The boiler 
As seen by the test data in Table 3,the combustion efciency was on the low side in the initial stage of boiler startup.As the main burners commissioned one by one,the heat absorption rate of furnace went up gradually,and the combustion efciency was improved step by step. 
emperature and pressure run—up curves(Figure 7)met 
requirements of technical regulation.The oil consumption 
COnCIusiOns 
nimum gasied oi ignion echnology adopted by mainly used for preheating boier and starng the coal 1)The mi
pulverzing ystem n he nial stage)was added up o 1 2 ons 
during the sliding starup.Compared to the average oil consumptionof33tiepat,tereofoil saving reached64%. 
Fularji Power Plant’ boier No.2 can be used  direct 
igting ligte,and the fring is stable.The boiler startup time,temperature and pressure curves are in conf ormity 
with operation regulations. 
Test for combustion efciency during boier startup 
The test was carried out under pre—parallel,50 MW,  00 MW and 1 20 combustion—supporing oil.The test result is shown in Table 3. 
2)The opening of outet damper of an mi coresponding to 
the minimum oil igtion burers should be in the range of 60%一80%and the coal feeder should maintain a speed of 30%durng the boiler cold startup. 
Table 3 Combustion efciency during boier startup 
3)The combuson efciency s mproved  t heat absorption 
rate of urace rse durng boiler cold startup. 
The oil consumption stands at 1 2 tons and the rate of oil saving comes up to 64%.The technical renovation is SUCCESSf1. 
References: 
[1]Chen Xuejun,Chen Tingkuan,Boier Prnciple,Beijing 
China,China Machine Press,1 99 1. 
2]Heiongjang Electc Power Research nstute,Applcaton 
Research about Litle Oi Quanty Gasfed Combuston 
Direct Igting Pulverzed Coal Techolog Used in 670一t/h Boiler Direct Flow Burer,2004. 
3]Jin Rushan,Aero—Gas Turbine Combustion Chamber, 
Beijing China,China Asonautcs Publshing House, 
 998 
舒Iency /(%) 
Combust ̄n 
57.79 46 88.59 92.64 
Translated by Wang Ben and edited by Li Shulan) 
A 1 000-MW coalfired uni commissioned in Zouxian Power Plant 
The unit 7 in Zouxian Power Plant of Huadian International smoothly finished 1 68一h trial operation 
took only two years and nineteen days fr the unit to come intuse. 
on December4.Thisisoneoftheftbackingprojects 
for localization of 1 000一MW ultra—supercritical units 
During the trial operation,its load factor reached 1 00.06%.The designed coal consumption s 272.9 (wh, 66.1 
by imported technologies. 
Two Chinese.made 1 000.MW coa1.fired uItra. supercritical condensing generating units planned to 
Wh lower than the nationwide average value 
 whie he SO2 emission was 0.4 wh, 339 wh)
6 wh lower. 
At present,the total installed capacity of Zouxian Power Plant amounts  3540 MW. 
be constucted  n he ourh phase s a key project  sted 
in the 1 1 th Five.Year Plan.The unit 7 is one of them.It 
2006.N0.4 ELECTRICITY 

A 1000-MW coal-fired unit commissioned in Zouxian Power Plant

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