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公开(公告)号：US20160273756A1
公开(公告)日：2016-09-22
申请号：US15034060
申请日：2014-10-31
发明人： Franco GASPARINI , Inida PAPA , Corné WELGEMOED
CPC分类号： F22B1/18 , F01K7/18 , F01K13/02 , F01K17/025 , F01K23/064 , F22G1/04 , F22G5/12 , Y02E20/14 , Y02P80/15
摘要： A method of operating a combined heat and power plant (10) (CHP plant) includes generating hot flue gas in a hot flue gas generator (12) and cooling the hot flue gas in a sequence of cooling steps to recover heat and to generate steam in a heat recovery steam generator (16) (HRSG). The HRSG (16) includes an HP steam evaporator (26) downstream of the hot flue gas generator (12) in which HP steam is generated and in which the hot flue gas is cooled, at least one HP steam superheater (20, 22) between the hot flue gas generator (12) and the HP steam evaporator (26) in which at least HP steam from the HP steam evaporator is superheated and in which the hot flue gas is cooled, and an MP steam superheater (24) upstream of the HP steam evaporator (26) in which MP steam is superheated by the hot flue gas and in which hot flue gas is cooled.
摘要翻译： 操作热电厂（10）（CHP）组合的方法包括在热烟道气发生器（12）中产生热烟道气并以一系列冷却步骤冷却热烟道气以回收热量并产生蒸汽 在热回收蒸汽发生器（16）（HRSG）中。 HRSG（16）包括在热烟气发生器（12）下游的HP蒸汽蒸发器（26），其中产生HP蒸汽，其中热烟道气被冷却，至少一个HP蒸汽过热器（20,22） 在热烟道气发生器（12）和HP蒸汽蒸发器（26）之间，其中来自HP蒸汽蒸发器的至少HP蒸汽被过热并且其中热烟道气被冷却，并且MP蒸汽过热器（24）在 HP蒸汽蒸发器（26），其中MP蒸汽由热烟道气过热，其中热烟道气被冷却。
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公开(公告)号：US20160281975A1
公开(公告)日：2016-09-29
申请号：US15034071
申请日：2014-10-31
发明人： Franco GASPARINI , Corné WELGEMOED
CPC分类号： F22B1/18 , F01K7/165 , F01K7/18 , F01K13/006 , F01K13/02 , F01K17/02 , F01K17/025 , F01K23/064 , F22G5/12 , Y02E20/14 , Y02P80/15
摘要： A method of operating a combined heat and power plant (10) (CHP plant) is provided. The CHP plant (10) includes a hot flue gas generator (12) generating hot flue gas which is then cooled in a sequence of cooling steps to recover heat and to generate steam in a heat recovery steam generator (16) (HRSG). The HRSG (16) includes a steam evaporator (26) downstream of the hot flue gas generator (12), and at least one steam superheater (22) between the hot flue gas generator (12) and the steam evaporator (26). The steam superheater (22) is configured to superheat, during normal operating conditions of the CHP plant (10), at least steam (110) imported into the HRSG (16). The method includes, when there is insufficient heat removal from the hot flue gas downstream from the hot flue gas generator (12) but upstream of the steam evaporator (26) as a result of insufficient mass flow of imported steam (110) to the steam superheater (22), to the extent that the hot flue gas temperature downstream of the steam superheater (22) will rise or rises to or above a predetermined limit, quenching steam inside the steam superheater (22) or steam being fed to the steam superheater (22) by injecting boiler feed water or condensate (162) into the steam to produce steam in the steam superheater (22) thereby to increase the removal of heat from the hot flue gas and hence to reduce the hot flue gas temperatures downstream of the steam superheater (22).
摘要翻译： 提供了一种操作热电联产（10）（CHP工厂）的方法。 CHP装置（10）包括产生热烟道气的热烟气发生器（12），然后将其按照冷却步骤的顺序冷却以回收热量并在热回收蒸汽发生器（16）（HRSG）中产生蒸汽）。 HRSG（16）包括在热烟气发生器（12）下游的蒸汽蒸发器（26）和在热烟气发生器（12）和蒸汽蒸发器（26）之间的至少一个蒸汽过热器（22）。 蒸汽过热器（22）被配置为在CHP设备（10）的正常操作条件期间至少将导入到HRSG（16）的蒸汽（110）过热。 该方法包括，当从热烟道气发生器（12）下游的热烟道气排出的热量不足而蒸汽蒸发器（26）的上游，由于进口蒸汽（110）的质量流量不足 过热器（22），使得蒸汽过热器（22）下游的热烟道气温度升高或上升到或超过预定极限，将蒸汽过热器（22）内的蒸汽骤冷或送入蒸汽过热器 （22）通过将蒸汽给水或冷凝物（162）注入到蒸汽中以在蒸汽过热器（22）中产生蒸汽，从而增加从热烟道气中去除热量，从而减少热烟道气温度 蒸汽过热器（22）。
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公开(公告)号：US20160273405A1
公开(公告)日：2016-09-22
申请号：US15034097
申请日：2014-10-31
发明人： Franco GASPARINI , Rian WESSELS , Corné WELGEMOED
CPC分类号： F01K23/10 , F01K7/18 , F01K13/02 , F01K17/025 , F01K23/064 , F02C6/18 , F22B1/1815 , F22G5/12 , Y02E20/14 , Y02P80/15
摘要： A method of operating a combined heat and power plant (10) (CHP plant) includes generating hot flue gas and cooling the hot flue gas in a sequence of cooling steps to recover heat and to generate steam in a heat recovery steam generator (16) (HRSG). The HRSG (16) includes an LP steam evaporator (36) designed to generate steam at least over a pressure range of from 2 bar(g) to 18 bar(g) so that either LP steam or MP steam can selectively be generated by the LP steam generator (36), thereby to cool the hot flue gas, and an MP steam superheater (24) upstream of the LP steam evaporator (36) to superheat MP steam in heat exchange with the hot flue gas thereby to cool the hot flue gas. The method further includes, when no or insufficient MP steam is being imported to the MP steam superheater (24) to ensure safe operation of the MP steam superheater, and/or when a demand exists for exporting MP steam which cannot be satisfied by imported MP steam superheated in the MP steam superheater (24), and/or when a demand exists for MP steam in the CHP plant which cannot be satisfied by imported MP steam, operating the LP steam evaporator (36) at an operating pressure in the range of between 8 bar(g) and 18 bar(g) to generate MP steam to wet the MP steam superheater (24) and/or to satisfy at least to some extent said demand for MP steam, and thereafter, when sufficient MP steam is being imported to the MP steam superheater (24) from external of the CHP plant (10) to ensure safe operation of the MP steam superheater (24), and/or when any demand for exported MP steam is satisfied by imported MP steam which is superheated in the MP steam superheater (24) and then exported, and/or when there is no more demand for exporting of MP steam, and/or when the demand for MP steam in the CHP plant (10) is being satisfied at least to some extent by imported MP steam, reducing the operating pressure of the LP steam evaporator (36) to a pressure in the range of between 2 bar(g) and 8 bar(g) thereby to generate LP steam.
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