四角切圆燃烧锅炉低负荷稳燃技术

StabilizedCombustionTechnologyofBoilerwithFour2cornerTangentialFiringatLowLoad(110006),,,670töh,,,;NOx,AbstractVariousstabilizedcombustiontechnologiesofboilersatlowloadaresummarizedandtheen2riched2dilutedfurnersarestudied.Throughinstallingaflow2deflectionblockinthesectionofprimaryairpipebeforethenozzleandequippedwithaseparatedi2aphragm,theenriched2diluteddeflectedcombustionhasbeenrealized.Onthebasisofcoldmodeltesting,several670töhutilityboilershavebeenupgraded.Thetestingresultindicatedthat,agoodstabilizedcom2bustioneffectatlowloadwasachieved,alargeamountofoilforstabilizingcombustionatlowwassaved,NOxemissionwasreducedandenvironmentalpollutionwasalleviated.Keywordsboilerpulverizedcoalburnerstabi2lizedcombustiontechnologylowload0,35töh2000töh,,,:(1),,;(2),;(3),,,,,,,NOx,,,,,,1HG2670ö14029HG2670ö14026,,,HG2670ö14029:(1),,(2)4,Dö4,1.0D,20%,,1.872(3)23,,,2.8641.709(4)1,,HG2670ö14026:(1),HG2670ö14026(12),,33119987©1995-2005TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.;,(2),,,,,(),,,,,,,,(3)HG2670ö14026(12)3,,3,,,2,2,670töh,NOx,6142116211116HG2670ö14029,:670töh,540,540,240,360,1594DTM2350ö600,,41200mm600mm,,70%,,,21112,23,;,14,,23,14,,,42,221113(1)11(Vdaf)11.84%19.57%21.04MJökg40.52%(2):100MW,28,,,312,,100MW:100MW12,43,,312,3,:100MW1.441.46,,(3)100MW,3h,525,5265töh,,480,445469,474,,480,,,100MW,,,,,,(),,,,,41998731©1995-2005TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.100MW,,12,;130013502.22121114HG670ö140HM6HM12S452506,,;,,,,,16.30m22.45m,;2,,,3,,3,,212121419961019973,:(1),;(2)200MW180MW,1,3100MW;(3)1ö3,;(4)1.5310MWömin,,,100MW221213,100MW,,,,2199731019973101MW961011702MPa81546910283MPa8124817245391540537ö5365th-130813327649918ö4941949215ö5007MPa019180196458MPa1013111592071320910th-1258269115418ö501650ö4912()13614ö14915146ö1511513()152ö1411514615ö1441314MPa1312ö13181306ö125315A3717ö351233.2ö33.316A3516ö33183918ö3417213NOx245NOx,33NOxmgöm3245200MW952.51002.5528140MW294486155:200MW,3,140MW,33(3),200MW,140MW,5NOx2NOx2:();(),NOx,NOx3311,,,312(8)53119987©1995-2005TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.2öN1864734215962611343701665392öMPa47.0350.2448.3743.06öMPa105.85105.85118111ö0.440.470.410.38öcm4603412336öcm0.310.223,,,33öMW200201198203ö3012105.2ö328337ö350332ö342352.5ö298331.5327347.3ö244234233232.9ö297287.8ö5354.9ö141123ö133118ö128120.43,,6.812.6;4.87.6,,,44.1,,,204.2,,,,4.3670töh,;,5111,1994,(10)211,1995,(3)311:1998204208()(5),,;,,,;,,HG2670ö14029:4,Dö4,1.0D313,,,,:20%314:,,315:,316NOx:NOxNOxNOx,:1998203202()81998731©1995-2005TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.