Little oil ignition horizontal dense-dilute concentration type direct flow pulverized coal burner |
Title： |
| Little oil ignition horizontal dense-dilute concentration type direct flow pulverized coal burner |
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Application Number： |
200610088861 |
Application Date： |
2006/07/21 |
Announcement Date： |
2008/01/23 |
Pub. Date： |
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Publication Number： |
101109507 |
Announcement Number： |
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Grant Date： |
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Granted Pub. Date： |
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ApplicationType： |
Invention |
State/Country： |
11[China|beijing] |
IPC： |
F23D 1/00 |
Applicant(s)： |
Tsinghua University |
Inventor(s)： |
Zhang Hai, Lu Junfu, Xu Xiuqing, Liu Qing, Yue Guangxi |
Key Words： |
Little oil ignition, horizontal, dense-dilute concentration type,direct flow, pulverized coal burner |
Abstract： |
A horizontal gradation rich direct-flow coal-powder burner with low-oil ignition is provided, which relates to a coal-powder gradation burner with four corners arranged tangentially. The invention is characterized in that, the air flow of the primary air coal powder is separated by gradation, at the outlet of the channel for the thicker air flow, a stage-I separating block and a stage-II separating block for thicker whiff are provided so as to separate the air flow with thick powder into upper, middle and lower whiffs; the nozzle structure uses a nozzle structure for rich thick whiff; and at the thick-whiff rich nozzle, an small ignition oil gun is provided. The invention not only reduces the firing heat necessary for firing, is good for firing and burning, but also solves the low-load de-oiling steady burning when a 300-600MWe boiler burns difficult-to-burn coal; and can greatly save the firing and combustion-supporting oil; is especially suitable for 100, 200, 300 and 600MWe boilers to burn low-quality bituminous coal, poor coal, semi anthraciferous coal and anthraciferous coal as well as suitable for rebuilding the said boilers. |
Claim： |
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PCT： |
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