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公开(公告)号：JPH06207527A
公开(公告)日：1994-07-26
申请号：JP26647893
申请日：1993-10-25
Applicant: ABB RESEARCH LTD
Inventor： YAAKOPU KERAA
Abstract: PURPOSE: To provide a combustion process in a maximum level and in one or plural middle levels of a 2 or more than 2 stages gas turbine having an after combustion process based on a stoichiometric excess combination, a stoichiometric insufficient combination, or both of them of a premixed combustion process. CONSTITUTION: A first combustion stage is divided into a stoichiometric insufficient combustion portion 17 and a stoichiometric excess combustion portion 18, and the high temperature gas 9 generated at least in the stoichiometric excess combustion portion 18 is supplied to a first turbine 10.
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公开(公告)号：JPH07289951A
公开(公告)日：1995-11-07
申请号：JP19225593
申请日：1993-08-03
Applicant: ABB RESEARCH LTD
Inventor： YAAKOPU KERAA
Abstract: PURPOSE: To provide a cyclone filter capable of separating particles up to a diameter smaller than about 1 μm from dust-laden gas of a type permissible in terms of a cost. CONSTITUTION: This cyclone filter has many discrete cyclone members 1, a common inlet chamber 2 and a common separation chamber 3. Respectively two supply small parts 5 in a tangent direction are mounted between the inlet chamber and the swirl chambers 4 of the cyclone members. The cyclone members are so arranged that a high degree of symmetricalness is obtained by the principle of a reflected image inclusive of the walls of the common separation chamber.
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公开(公告)号：JPH0694227A
公开(公告)日：1994-04-05
申请号：JP16464293
申请日：1993-07-02
Applicant: ABB RESEARCH LTD
Inventor： YAAKOPU KERAA
Abstract: PURPOSE: To provide a secondary burner in which thermoacoustic vibration can be damped. CONSTITUTION: In a secondary burner where a fuel feed 2, 3 arranged in a combustion chamber 1 is surrounded by an annular air duct 4, the air duct 4 communicates, by means of at least one supply tube 5, with a through-flow Helmholtz resonator 6. The outlet from at least one damping tube 7 of the Helmholtz resonator is located in the region of the burner mouth 8 in a secondary combustion space 9.
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公开(公告)号：JPH06207717A
公开(公告)日：1994-07-26
申请号：JP15682993
申请日：1993-06-28
Applicant: ABB RESEARCH LTD
Inventor： YAAKOPU KERAA
Abstract: PURPOSE: To enable running of a combustion chamber a region where NOx is not generated by executing aerated combustion by pre-mixing burners with the combination of pre-mixing burners and catalytic burners. CONSTITUTION: The surrounding wall of a combustion chamber is arranged with a plurality of pre-mixing burners 10 and catalytic burners 20, and the catalytic burners are installed locally at positions where powerful cooling is normally required. The pre-mixing burner is a double-cone type burner, comprising a pair of conical hollow partial cones 11, 12. A slit 15 is formed in the tangential direction along the length of the surrounding wall at the contacting part between both cones, combustion air flows in burner parts in this way, and fluid fuel is fed inside the cones at a sharp angle. Then an inner burner is ignited first, and then running outer positioned elements are made to run sequentially with the fuel, so that NOx value by far less than 20 ppm can be attained.
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