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1. 发明专利

JPH06159613A LOW NOX COMBUSTION METHOD AND BURNER USED FOR THE SAME 失效
公开(公告)号：JPH06159613A
公开(公告)日：1994-06-07
申请号：JP33488292
申请日：1992-11-24
申请人： NIPPON FURNACE KOGYO KK , NIPPON KOKAN KK
发明人： TANAKA RYOICHI , MATSUO MAMORU , SUDO ATSUSHI , YAHARA HITOSHI , KAWAMOTO MASAO , KIKUKAWA HIROKUNI , TADA TAKESHI , TERAMOTO TOYOKAZU , AKIYAMA SHUNICHI , ISHIGUCHI YUKIO , SASAKI TAKETO
IPC分类号： F23C99/00 , F23C11/00
摘要： PURPOSE:To enable NOx combustion lower than that of the prior art double stage fuel combustion method to be conducted. CONSTITUTION:At least one set of a heat accumulative type burner system in which combustion air is supplied through a heat accumulative member heated by heat of combustion gas is installed. Almost of all amounts of combustion air A of higher temperature than that of a normal combustion passed through the heat accumulating member is injected from a burner throat 6 and concurrently a primary fuel nozzle 1 directed toward an inner circumferential surface of the burner throat is opened and there is also provided a secondary fuel nozzle 2 for injecting directly a secondary fuel F2 inside the furnace while being substantially in parallel with the throat 6. Primary fuel F1 is injected from around a flow of combustion air A of high temperature so as to form a primary flame B1 around the combustion air A, the secondary fuel injected in parallel with the outside part is shielded against the combustion air, the primary fuel is ignited under an excessive air state and then NOx within the primary flame is reduced with the secondary fuel and at the same time the combustion air of high temperature and the secondary fuel are gradually mixed to each other so as to perform the secondary combustion B2.

2. 发明专利

JPH11350973A ADDITIONAL COMBUSTION METHOD USING GAS TURBINE EXHAUST GAS AND ADDITIONAL COMBUSTION BURNER WHICH USES SAID ADDITIONAL COMBUSTION METHOD 失效
公开(公告)号：JPH11350973A
公开(公告)日：1999-12-21
申请号：JP16227198
申请日：1998-06-10
申请人： NIPPON FURNACE KOGYO KK
发明人： YAHARA HITOSHI , ONODERA TSUTOMU
IPC分类号： F02C3/24 , F23C99/00 , F23D14/22 , F23R3/34 , F23C11/00
摘要： PROBLEM TO BE SOLVED: To enable additional carburation of gas turbine exhaust gas, increase of turndown ratio by stabilizing combustion, combustion without using a large amount of fresh air, and elimination of long straight ducts. SOLUTION: In this additional combustion method using gas turbine exhaust gas, an additional combustion fuel F is combusted by using oxygen which remains in an exhaust gas E of the gas turbine for reheating the gas turbine exhaust gas E. Further, fuel supply is divided into a primary and a secondary. To the primary fuel F1 , fresh air A of the amount that burns up the total amount of the primary fuel F1 is injected to the primary fuel F1 to generate a primary flame 2. In addition, after injection of the primary fuel F1 , in the area surrounding the primary flame 2 in the downstream of the primary fuel injection, the secondary fuel F2 is injected, while the gas turbine exhaust gas E is blown generally in parallel with the primary flame 2 around the secondary fuel F2 , which generates a secondary flame 3.

3. 发明专利

JPH0650508A LOW NOX COMBUSTION METHOD AND BURNER THEREFOR 失效
公开(公告)号：JPH0650508A
公开(公告)日：1994-02-22
申请号：JP16989492
申请日：1992-06-05
申请人： NIPPON FURNACE KOGYO KK
发明人： TANAKA RYOICHI , MATSUO MAMORU , YAHARA HITOSHI , SUDO ATSUSHI
IPC分类号： F23C99/00 , F23C6/04 , F23D14/22 , F23D14/74 , F23C11/00
摘要： PURPOSE:To contrive the reduction of NOx by a method wherein primary fuel is injected from the surrounding of stream of combustion air to form tubular primary flame for enclosing the combustion air while secondary fuel is injected to the outside of the primary flame to isolate the secondary fuel from the combustion air by the primary flame. CONSTITUTION:Almost total amount of combustion air A is injected into a burner throat 19 while primary fuel F1 is injected from the surrounding of the combustion air A gainst the combustion air A to form tubular primary flame B1 enclosing the flow of the combustion air A. Secondary fuel F2 is injected from the outside of the primary flame B1 to isolate the central combustion air A by the primary flame B1 from the secondary flame F2 just injected. Accordingly, the combustion air A will never be contacted directly with the secondary fuel F2 immediately after being injected to the outside of the primary flame B1. In this case, the secondary fuel, injected from the outside of the primary flame B1, reduces NOx in the primary flame B1 at the surface of the primary flame B1. Thereafter, the central combustion air A, ejected through the primary flame B1, is contacted with the secondary fuel F2 at the downstream thereof whereby secondary combustion is caused.

4. 发明专利

JP2788698B2 失效
公开(公告)号：JP2788698B2
公开(公告)日：1998-08-20
申请号：JP33488292
申请日：1992-11-24
申请人： NIPPON FUAANESU KOGYO KK , NIPPON KOKAN KK
发明人： TANAKA RYOICHI , MATSUO MAMORU , SUDO ATSUSHI , YAHARA HITOSHI , KAWAMOTO MASAO , KIKUKAWA HIROKUNI , TADA TAKESHI , TERAMOTO TOYOKAZU , AKYAMA SHUNICHI , ISHIGUCHI YUKIO , SASAKI TAKETO
IPC分类号： F23C99/00 , F23C11/00

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