发明名称 |
METHOD FOR PRODUCING PULVERIZED COAL |
摘要 |
<p>A method for producing pulverized coal including the steps of providing a drying gas heated to a predefined temperature in a hot gas generator; feeding the heated drying gas into a pulverizer; introducing raw coal into the pulverizer, the pulverizer grinding the raw coal into pulverized coal; collecting a mixture of drying gas and pulverized coal from the pulverizer and feeding the mixture to a filter, the filter separating the dried pulverized coal from the drying gas; collecting the dried pulverized coal for further use and feeding the drying gas from the filter to an exhaust line; and collecting the drying gas exiting the filter and feeding part of the collected drying gas to a recirculation line for feeding recirculation drying gas to the hot gas generator. According to an important aspect of the present invention, the step of providing the drying gas includes feeding a variable flow rate of hot stove waste gas to the hot gas generator through a hot stove waste gas line so as to maximize the amount of hot stove waste gas used as drying gas. A pressure of the drying gas at a pulverizer gas inlet is controlled by regulating a flow rate of the hot stove waste gas through the hot stove waste gas line.</p> |
申请公布号 |
EP2389456(A1) |
申请公布日期 |
2011.11.30 |
申请号 |
EP20100701504 |
申请日期 |
2010.01.21 |
申请人 |
PAUL WURTH S.A. |
发明人 |
GOEDERT, PAUL;MAYER, MARKUS;STAMATAKIS, GEORGES;CAUWENBERGHS, BERNARD |
分类号 |
C21B5/00;B02C23/30;B02C23/34;C10B57/10;F26B21/10 |
主分类号 |
C21B5/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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