首页> 外国专利> COMBUSTION METHOD OF PULVERIZED COAL, PULVERIZED COAL COMBUSTION DEVICE AND PULVERIZED COAL COMBUSTION BURNER

COMBUSTION METHOD OF PULVERIZED COAL, PULVERIZED COAL COMBUSTION DEVICE AND PULVERIZED COAL COMBUSTION BURNER

机译：煤粉燃烧方法，煤粉燃烧装置及煤粉燃烧器

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摘要

PROBLEM TO BE SOLVED: To provide a combustion device which forms stable combustion flames only by the supply of pulverized coal or a pulverized coal combustion burner even under the condition which burns only nonflammable pulverized coal or under a low load condition. ;SOLUTION: An air nozzle 11, which feeds air in a swirling current, is laid out around the outer periphery of a fuel nozzle 10 which conveys pulverized coal by air. The fuel nozzle 10 forms a first recirculating current around the edge of the nozzle while the swirling current forms a second recirculating current on the outer periphery of a fuel jet, and forms a third recirculating current 22 in the peripheral direction of the second recirculating current 21 and the current 22, which is partially formed integrally with the first recirculating current 20. Since the third recirculating current 22 feeds a high temperature gas of the second recirculating current 21 to the fuel nozzle, it is possible to enhance the stability of flames of pulverized coal.;COPYRIGHT: (C)1997,JPO

机译：要解决的问题：提供一种燃烧装置，即使在仅燃烧不可燃粉煤的条件下或在低负荷条件下，也仅通过供应煤粉或煤粉燃烧器才能形成稳定的燃烧火焰。 ;解决方案：以旋流形式供给空气的空气喷嘴11布置在燃料喷嘴10的外周周围，该燃料喷嘴通过空气输送煤粉。燃料喷嘴10在喷嘴的边缘周围形成第一再循环电流，而旋流在燃料射流的外周上形成第二再循环电流，并在第二再循环电流21的周向上形成第三再循环电流22。电流22与部分地与第一再循环电流20整体地形成。由于第三再循环电流22将第二再循环电流21的高温气体馈送到燃料喷嘴，所以可以提高粉状火焰的稳定性。煤炭;版权：（C）1997，日本特许厅

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公开/公告号JPH09159109A

专利类型
公开/公告日1997-06-20

原文格式PDF
申请/专利权人 HITACHI LTD;BABCOCK HITACHI KK;
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申请/专利号JP19950320203
发明设计人 OKAZAKI HIROFUMI;AMANO KEN;TANIGUCHI MASAYUKI;KIYAMA KENJI;ORITA HISAYUKI;KOBAYASHI YOSHINOBU;TANAKA TOSHIYUKI;
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申请日1995-12-08
分类号F23D1/02;F23C11/00;
国家 JP
入库时间 2022-08-22 03:35:46

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