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1.发明申请公开(公告)号：US20090241860A1
公开(公告)日：2009-10-01
申请号：US12055832
申请日：2008-03-26
IPC分类号： F22B1/18
CPC分类号： F22B33/10 , F22B33/14 , Y02P60/831
摘要： An enhanced steam cycle utilizing a dual pressure recovery boiler with reheat allows a large increase in electrical generation with various turbine cycles while overcoming traditional lower furnace material limitations. A dual pressure designed recovery boiler furnace is provided with a lower furnace and an upper furnace. The lower furnace is operated at a lower temperature to prevent or reduce corrosion of the lower furnace wall tubes caused by the reducing environment. The lower furnace can be either a low pressure natural circulation steam generating (drum) system or economizer. Unlike the lower furnace, the upper furnace is not exposed to a reducing environment and is therefore not as susceptible to severe corrosion rates. The upper furnace is operated at higher temperatures and pressures which permit implementation of higher efficiency reheat steam cycles. The upper furnace thus operates as a high pressure natural circulation steam generating (drum) system, or as a once-through supercritical steam generating system. The dual pressure recovery boiler can thus be coupled to a variety of condensing, non-condensing or a combination of condensing and non-condensing turbine cycles to provide a large increase in electrical generation.
摘要翻译： 利用具有再热的双压力回收锅炉的增强的蒸汽循环允许在克服传统的较低炉材料限制的情况下，具有各种涡轮循环的发电量大大增加。 双压设计的回收锅炉炉具有下炉和上炉。 下炉在较低的温度下运行，以防止或减少由还原环境引起的下炉壁管的腐蚀。 低炉可以是低压自然循环蒸汽发生（鼓）系统或节能器。 与下炉不同，上炉没有暴露在还原环境中，因此不会受到严重的腐蚀速率的影响。 上炉在更高的温度和压力下运行，这允许实现更高效率的再热蒸汽循环。 因此，上部炉子作为高压自然循环蒸汽发生（鼓）系统，或作为一次通过的超临界蒸汽发生系统。 因此，双压力回收锅炉可以耦合到各种冷凝，非冷凝或冷凝和非冷凝涡轮循环的组合，以提供大量的发电增加。
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2.发明授权公开(公告)号：US08443606B2
公开(公告)日：2013-05-21
申请号：US12055832
申请日：2008-03-26
CPC分类号： F22B33/10 , F22B33/14 , Y02P60/831
摘要： An enhanced steam cycle utilizing a dual pressure recovery boiler with reheat. A dual pressure designed recovery boiler furnace is provided with a lower furnace and an upper furnace. The lower furnace is operated at a lower temperature to prevent or reduce corrosion of the lower furnace wall tubes. The lower furnace can be either a low pressure natural circulation steam generating (drum) system or economizer. The upper furnace operates as a high pressure natural circulation steam generating (drum) system, or as a once-through supercritical steam generating system at higher temperatures and pressures permitting implementation of higher efficiency reheat steam cycles.
摘要翻译： 利用再加热的双压力回收锅炉进行增强的蒸汽循环。 双压设计的回收锅炉炉具有下炉和上炉。 下炉在较低温度下运行，以防止或减少下炉壁管的腐蚀。 低炉可以是低压自然循环蒸汽发生（鼓）系统或节能器。 上部炉子作为高压自然循环蒸汽发生（鼓）系统运行，或者作为高温和高压下的一次性超临界蒸汽发生系统，允许实施更高效率的再热蒸汽循环。
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公开(公告)号：US09459005B2
公开(公告)日：2016-10-04
申请号：US13217833
申请日：2011-08-25
CPC分类号： F22B31/045 , D21F5/20 , F22D1/32 , Y02E20/12
摘要： A method for improving pulp mill steam cycle efficiency includes the steps of providing at least one deaerator tank having a first pressure, and lowering the pressure of said deaerator tank to a second pressure. Feedwater is supplied to a pre-economizer, where it is heated. The water is then delivered to at least one feedwater heater, where it is heated. The water is then delivered to an economizer. By this method boiler steam rate is increased while boiler efficiency is maintained and turbine extraction for deaerator and feedwater heating is minimized.
摘要翻译： 一种提高纸浆厂蒸汽循环效率的方法包括以下步骤：提供至少一个具有第一压力的除气罐，并将所述除气罐的压力降低到第二压力。 给水被提供给预热器，在那里它被加热。 然后将水输送到至少一个给水加热器，在那里加热。 然后将水送至节能器。 通过该方法，锅炉蒸汽速率提高，锅炉效率得到保持，涡轮机提取除气器和给水加热最小化。
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公开(公告)号：US20120048215A1
公开(公告)日：2012-03-01
申请号：US13217833
申请日：2011-08-25
IPC分类号： F22D1/00
CPC分类号： F22B31/045 , D21F5/20 , F22D1/32 , Y02E20/12
摘要： A method for improving pulp mill steam cycle efficiency includes the steps of providing at least one deaerator tank having a first pressure, and lowering the pressure of said deaerator tank to a second pressure. Feedwater is supplied to a pre-economizer, where it is heated. The water is then delivered to at least one feedwater heater, where it is heated. The water is then delivered to an economizer. By this method boiler steam rate is increased while boiler efficiency is maintained and turbine extraction for deaerator and feedwater heating is minimized.
摘要翻译： 一种提高纸浆厂蒸汽循环效率的方法包括以下步骤：提供至少一个具有第一压力的除气罐，并将所述除气罐的压力降低到第二压力。 给水被提供给预热器，在那里它被加热。 然后将水输送到至少一个给水加热器，在那里加热。 然后将水送至节能器。 通过该方法，锅炉蒸汽速率提高，锅炉效率得到保持，涡轮机提取除气器和给水加热最小化。
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公开(公告)号：US20120325165A1
公开(公告)日：2012-12-27
申请号：US13528208
申请日：2012-06-20
申请人： Timothy E. Hicks , Jeffrey J. Gries
发明人： Timothy E. Hicks , Jeffrey J. Gries
IPC分类号： F22G7/14
摘要： A dual-path parallel superheater includes a drum for delivering steam, a steam receiving apparatus opposite the drum for receiving steam, a first surface and a second which receive steam from the drum to provide first and second paths for superheating the steam before delivering it to the steam receiving apparatus. There are also spray attemperators along the first and second paths.
摘要翻译： 双路平行过热器包括用于输送蒸汽的滚筒，与滚筒相对的用于接收蒸汽的蒸汽接收装置，第一表面和第二表面，第二表面接收来自滚筒的蒸汽，以提供第一和第二路径，用于将蒸汽输送到 蒸汽接收装置。 沿着第一和第二条路径也有喷雾调温器。
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