公开(公告)号：JPH09125983A

公开(公告)日：1997-05-13

申请号：JP25940796

申请日：1996-09-30

Applicant: ABB RESEARCH LTD

Inventor： FURANTSU YOOSU ,  TEIMOSHII GURIFUIN ,  HANSU KOTSUHO

IPC: F01N3/08 ,  F01N3/24 ,  F02C3/20 ,  F02C3/28 ,  F02C7/26 ,  F02C9/34 ,  F23C6/04 ,  F23C13/00 ,  F23R3/40 ,  F23C11/00

Abstract: PROBLEM TO BE SOLVED: To avoid a preload generating a harmful matter by preventing hot gas derived from previously performed combustion from being supplied to a catalyst stage. SOLUTION: In an operation method of a power station plant which is mainly composed of a compressor 4, a combustion unit and a turbine 12, and takes a form in which the combustion unit is composed of an adjusting stage and a combustion chamber for at least a part of combustion air, a part 13a of compressed air 13 from the compressor 4 is mixed with a fuel quantity 14a by being quided through the adjusting stage. An air-fuel mixture reaches a genarator 8, and hydrogen fractionated in the generator is introduced into the combustion chamber. The combustion chamber is composed of a starting burner 1, a catalyst stage 2 and a second combustion stage on its downstream side. An air-fuel mixture 16a fractionated in the generator 8 and another compressed air 13 reach the combustion chamber, and between plural combustion devices in this combustion chamber, interdependent combustion is generated to reduce discharge of a harmful matter in relation to high speed operation of the plant.

公开(公告)号：JPH0842824A

公开(公告)日：1996-02-16

申请号：JP17646995

申请日：1995-07-12

Applicant: ABB RESEARCH LTD

Inventor： FURANTSU YOOSU ,  TEINOOMARUCHIN MAARINGU ,  PIITAA SHIINIA

IPC: F23D11/40 ,  F23C7/00 ,  F23D11/22 ,  F23D17/00

Abstract: PROBLEM TO BE SOLVED: To raise the lean stability limit of gas flame while enlarging the regulation range of a burner without impairing atomization of liquid fuel by controlling inflow rate of blast air into the inner burner space. SOLUTION: During operation with gas fuel, pilot gas 9 is introduced through the opening 18 of a pilot gas passage 13 into blast air 5 in an air blast nozzle 2. The pilot gas 9 is mixed with the blast air 5 thereat and supply flow of the blast air 5 is throttled. Immediately after flowing into the inner burner space 16, the mixture 23 of pilot gas and air is further mixed with the blast air 5 fed through an inner air passage 11. When the blast air 5 is throttled in such a manner, combustion gas is enriched as desired and the pilot gas 9 is mixed with the blast air 5 earlier in order to suppress adverse effect of the air flow onto the gas flame. According to the method, flame is stabilized and the lean extinction limit is improved during pilot gas operation without missing the possibility of fuel atomization.