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1. 发明专利

JPS63140208A PULVERIZED COAL BURNER 失效
公开(公告)号：JPS63140208A
公开(公告)日：1988-06-11
申请号：JP28628786
申请日：1986-12-01
申请人： HITACHI LTD , BABCOCK HITACHI KK
发明人： AZUHATA SHIGERU , SUDO KIYOSHI , SOMA KENICHI , KOBAYASHI YOSHINOBU , MASUTANI MASAO , INADA TORU , ARASHI NORIO , MIYADERA HIROSHI , MORITA SHIGEKI
IPC分类号： F23D1/00
摘要： PURPOSE:To promote the ignition of pulverized coal by a method wherein a pulverized coal nozzle and a secondary air nozzle are installed coaxially and the cross sectional area of a secondary air passage in the secondary air nozzle is formed eccentrically with reference to a coaxial center. CONSTITUTION:A pulverized coal nozzle 16 has an elliptical cross sectional shape, and thereby the cross sectional area of a secondary air passage in a secondary air nozzle is formed eccentrically with reference to a coaxial center. At the tip of the nozzle 16 a diffuser-shaped flame holding device 21 is placed. At the center of a burner 10 an auxiliary fuel nozzle 15 burning auxiliary fuel is attached. Thus, the secondary and tertiary air are spouted into a combustion chamber 11 as circular ring-shaped jet streams from the nozzle 17 and a tertiary air nozzle 18. On the other hand, pulverized coal is spouted as an elliptical jet stream from the elliptical nozzle 16. Thereby, the mixing of the secondary air having an air flow rate necessary for ignition at the optimum condition and the pulverized coal near the outlet of the burner 10 is promoted.

2. 发明专利

JPS51112393A GAS SAMPLER FOR ANALYZING APPARATUS 失效
公开(公告)号：JPS51112393A
公开(公告)日：1976-10-04
申请号：JP2596875
申请日：1975-03-05
申请人： HITACHI LTD
发明人： SUDO KIYOSHI
IPC分类号： G01N1/22 , G01N1/00
摘要： PURPOSE:To prepare an apparatus of simple in structure and operation and capable of continuous dilution and to detect samples of a variety of concentration by the addition of air pipe for dilution in sampling probe with ejector and making the suction pipe leading the sample to detector possible to ascend and descend.

3. 发明专利

JPH07133931A COMBUSTION APPARATUS 失效
公开(公告)号：JPH07133931A
公开(公告)日：1995-05-23
申请号：JP21981294
申请日：1994-09-14
申请人： HITACHI LTD
发明人： OKAZAKI HIROFUMI , KOBAYASHI YOSHINOBU , TANIGUCHI MASAYUKI , SUDO KIYOSHI
IPC分类号： F23R3/18 , F23R3/30 , F23R3/34
摘要： PURPOSE:To allow low NOx combustion and stable combustion in a wide load range to be compatible by forming a circulation flow of combustion gas at a position near an injection port of a premixing burner or at a downstream side from the vicinity, and providing means for holding premixing flame by combustion of premixed gas. CONSTITUTION:Combustion air 1 is fed from a primary air inlet 33 to a primary combustion inner cylinder 31, and fed from a secondary air inlet 25 of a premixing burner 23 into a premixing chamber 24. A diffusing flame 50 is formed in reaction with primary fuel 2 from a primary fuel nozzle 34, premixed gas 5 is formed by mixing with secondary fuel 3 from a secondary fuel nozzle 27 in the chamber 24, injected from an injection port 26 of the burner 23 to form a premixing flame 51 in a secondary combustion chamber 20. High- temperature secondary combustion gas is fed into a circulating flow forming area 52 at a downstream side of a flame stabilizer 40 to form the flame 51, and mixture of the gas 5 and primary combustion gas 6 is expedited due to presence of a protruding piece 45 at a downstream end of the cylinder 31.

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