发明名称 |
Heat recovery system and power generation system |
摘要 |
In an improved system for recovering heat from a combustion gas produced by burning wastes, the combustion gas or combustible gas produced by partial burning of the wastes subjected to dust filtration in a temperature range of 450-650° C. at a filtration velocity of 1-5 cm/sec under a pressure of from -5 kPa (gage) to 5 MPa before heat recovery is effected. The dust filtration is preferably performed using a filter medium which may or may not support a denitration catalyst. Heat recovery is preferably effected using a steam superheater. The dust-free gas may partly or wholly be reburnt with or without an auxiliary fuel to a sufficiently high temperature to permit heat recovery. The combustion furnace may be a gasifying furnace which, in turn, may be combined with a melting furnace. If desired, the reburning to a higher temperature may be performed under pressure and the obtained hot combustion gas is supplied to a gas turbine to generate electricity, followed by introduction of the exhaust gas from the gas turbine into a steam superheater for further heat recovery. The system can raise the temperature of superheated steam to a sufficient level to enhance the efficiency of power generation without possibility of corrosion of heat transfer pipes by the combustion gas or combustible gas.
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申请公布号 |
US6321540(B1) |
申请公布日期 |
2001.11.27 |
申请号 |
US19990379904 |
申请日期 |
1999.08.24 |
申请人 |
MIYOSHI NORIHISA;FUJINAMI SHOSAKU;HIROSE TETSUHISA;IRIE MASAAKI;TAKANO KAZUO;OSHITA TAKAHIRO |
发明人 |
MIYOSHI NORIHISA;FUJINAMI SHOSAKU;HIROSE TETSUHISA;IRIE MASAAKI;TAKANO KAZUO;OSHITA TAKAHIRO |
分类号 |
F01K23/06;F22B1/18;F22B31/04;F23G5/00;F23G5/027;F23G5/46;F23G5/48;F23J15/02;(IPC1-7):F01K1/00;F02C6/00 |
主分类号 |
F01K23/06 |
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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