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1. AU2012281491 - Method for operating pulverized coal-fired boiler facility

注意: このテキストは、OCR 処理によってテキスト化されたものです。法的な用途には PDF 版をご利用ください。

[ EN ]
THE CLAIMS i)EFINING THE >NVENTTON ARE AS FOLLOWS:
1 A method fbroperating a puerizec lcona'id bIler faci tatuses an upgraded lo -grade coal as a fuelcmpiing:
a uvaeridacalied boler Nfatyinclding a carrier gas fow tat supp a nixd gas via a gas heater nto a conal pulvrizen wherein the mixed gas is supplied i adding a boiler exhaust gas o air,
a bypass carrier gas flow that connects to the carrier gas flowand that is diverged from the carrier gas fow so as to bypass the gas hater and
10                     an exhaust gas low that suiest ierexhaust gasinto the bypass carrier gas flow wherein the exhaust gas fow is nnected to the bypass caier gas flow on a more upstean position than a branch oint heeen bypass carrier gas flow and the carrier gas low.
wherein a mied gas ow, created by adding he boiler exhaustgas toair is K dAvded into a carrier gas f a bypass carrier gasflo
and. when the mixed gas is supplied into the coal pulerizrthe mixed gas has an oxygen concentrationoflessthan2% hvolme
2. The iethod for operating a puveriedMa-fied bAile failty according to 20 Claim v wherein
the nxed gas low is divided and lows into a carier gas flow thatpasses through a gas heater and a bypass carrir gas fow thatpasseshe gas heated and
the mixed gas is then supplied to the coal pulverizer.
25
3. The method forperating a puerizedbcoal-fired boilerfacilty accordng to Claim. further composing extracting the boile exhaust gasNrn the exhaust gas flow disposed ownstream of a desu'farization towr
30 4. The method for operating a pulverizedcoalfired boiled facility accordmg to Claim 2, further comprising extracting the boiler exhaust gas from the exhaust gas flow disposed downstream of a desulfurization tower.
o.A pulverized-coalired boiler facility including
a carrier gas flow that supplies a mixed gas via a gas heater into a coal pulier ein mixed gas is spied by adding a boiler exhaust gasto air,
a pass carrier gas Iflt that connects to the er gas fow and that's : diverged from the carrier gas fow so as to bypass gas heaterad
an exhaust gas flow that supplies the bOiler eust gas into the bps carrier gas flow, where the exhaust gas flowi connected the bypasscaer gas flow on a more upstream position than a branch pointbetween the bypass carter gas fow and the carter gas fow,
0                     wherein a mixed gas ow, created by addingthe boiled exhaustgasto ai i divided into a cariegas flow and bpass carrier gas flow,
and, when the mIxed gas is supied ino the coal pulverizerthe mixed gas has an xyencnetainolesta12byvolumne.
5          . The pu tried coaired oer fai according to c rather comprising
a first valve disposed on the intake side of an air fan which supphes air to the carrier gas duct
a second valve disposed on the ehast gas duct
0                      a ird vale dispoed on the carer gas duct
a forth vave dsposedon thebpas carrier gas ductn and
a control unit that contrls the degree of opening e fir vale, the second alvet thethird vale. and the fourth lv,e