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公开(公告)号：US10948178B2
公开(公告)日：2021-03-16
申请号：US16314905
申请日：2016-08-05
发明人： Jan Brückner , Frank Thomas
摘要： A method for operating a waste heat steam generator, in particular one designed according to the forced flow principle, having an evaporator, through which a flow medium flows; an economizer having a number of economizer heating surfaces, and having a bypass line, which on the flow medium side is connected in parallel to a number of economizer heating surfaces. A variable that is characteristic of the heat energy supplied to the waste heat steam generator for controlling or regulating the flow rate of the bypass line is used, wherein the regulating or controlling of the flow rate of the flow medium through the bypass line takes place at the inlet of the evaporator subject to a supercooling target value. The regulating or controlling of the flow rate of the flow medium through the bypass line also takes place at the outlet of the evaporator subject to an overheating target value.
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公开(公告)号：US10514183B2
公开(公告)日：2019-12-24
申请号：US15576498
申请日：2016-07-15
发明人： Naoki Koumoto , Tomohiro Harada , Hiroyuki Yagita , Akitoshi Sugiyama , Tarou Ichihara , Kimio Konno , Yukimitsu Sasaki
摘要： An exhaust gas latent-heat recovery device includes: a heat transfer tube disposed inside a duct through which exhaust gas flows, the heat transfer tube having a water supply inlet into which water to be heated for recovering latent heat of the exhaust gas is supplied and a water supply outlet through which the water to be heated is discharged; and a water supply control part configured to control supply of the water to be heated to the water supply inlet. The water supply control part is configured to control supply of the water to be heated from the water supply inlet so that an outlet temperature being a temperature of the water to be heated at the water supply outlet is at a set temperature.
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公开(公告)号：US20180363557A1
公开(公告)日：2018-12-20
申请号：US15739898
申请日：2016-07-07
CPC分类号： F02C7/224 , F01K7/38 , F01K23/06 , F01K23/10 , F01K23/106 , F22B1/18 , F22D1/12 , F22D1/14 , Y02E20/16
摘要： A water feeding system provided with: a first feed water line through which first feed water flows; a second feed water line through which second feed water having a lower pressure than the first feed water flows; a first heater that heats the first feed water; a first feed water introducing line that guides first heated feed water, which is the first feed water that has been heated by the first heater, to the second feed water line; a medium heat exchanger that causes the first heated feed water to exchange heat with a medium, thereby cooling the first heated feed water and heating the medium; and a cooling water injecting line that injects cooling water having a lower temperature than the first heated feed water into the first feed water introducing line, at a position located further to the second feed water line side than the medium heat exchanger.
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4.发明授权公开(公告)号：US09903583B2
公开(公告)日：2018-02-27
申请号：US15053014
申请日：2016-02-25
申请人： IHI Corporation
发明人： Terutoshi Uchida
IPC分类号： F22D1/12 , F23J15/06 , F01K13/02 , F22B1/02 , F23L7/00 , F23C9/00 , F22D1/14 , F22D11/04 , F23B30/00 , F01K5/00
CPC分类号： F22D1/12 , F01K5/00 , F01K13/02 , F22B1/02 , F22D1/14 , F22D11/04 , F23B5/02 , F23C9/00 , F23J15/06 , F23L7/007 , Y02E20/344 , Y02E20/363
摘要： A feed-water discharge side of a condenser is connected to a feed-water entry side of an flue gas cooler through a bypass line provided with a steam production preventive pump and with an inlet cutoff valve. A feed-water discharge side of the flue gas cooler is connected to the feed-water entry side of the condenser through a steam production preventive water circulation line provided with an outlet cutoff valve. When a boiler feed-water pump is stopped in boiler fuel cutoff, the inlet and outlet cutoff valves are opened and the steam production preventive pump is activated to cause water to flow through the bypass line into the flue gas cooler, is returned through the steam production preventive water circulation line to the condenser and is circulated.
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公开(公告)号：US20170234528A1
公开(公告)日：2017-08-17
申请号：US15434714
申请日：2017-02-16
发明人： Frank Winter , Thorsten Uhl
摘要： A method and a device for generating superheated steam from a working medium, which includes the following steps: feeding of a working medium in the liquid phase to a specific heating tube and temperature regulation of the specific heating tube. Furthermore, the specific heating tube is temperature-regulated with a defined amount of thermal energy, as a result of which superheated steam is formed in the specific heating tube from the working medium fed in the liquid phase, the superheated steam then departing from the specific heating tube.
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公开(公告)号：US09476583B2
公开(公告)日：2016-10-25
申请号：US14578476
申请日：2014-12-21
发明人： Bing Liu
CPC分类号： F22D1/12 , F22B1/18 , F22B1/1892 , F22D1/04 , F22D1/08 , F24D12/02 , F24D2200/18 , F24H8/00 , F28D21/001 , F28F21/082 , Y02B30/14
摘要： A recovery system of waste heat from flue gas. The system includes a first heat exchanger and a second exchanger. The first heat exchanger includes a heat absorption section, a heat release section, and a first pipeline. The second heat exchanger includes a second pipeline including an inlet header and an outlet header. The system further includes a third pipeline. The first heat exchanger is disposed at a relatively high temperature side of a flue, the second heat exchanger is disposed at a relatively low temperature side of the flue, and the first heat exchanger and the second heat exchanger are connected by the third pipeline. The heat absorption section and the heat release section are connected by the first pipeline to form a circulation loop; the heat absorption section is disposed in the flue; the heat release section is disposed in the third pipeline.
摘要翻译： 烟气废热回收系统。 该系统包括第一热交换器和第二交换器。 第一热交换器包括吸热部，放热部和第一管。 第二热交换器包括第二管道，其包括入口集管和出口集管。 该系统还包括第三管道。 第一热交换器设置在烟道的较高温度侧，第二热交换器设置在烟道的较低温度侧，第一热交换器和第二热交换器通过第三管路连接。 热吸收部分和散热部分通过第一管道连接以形成循环回路; 吸热部设置在烟道中; 热释放部分设置在第三管道中。
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公开(公告)号：US4489679A
公开(公告)日：1984-12-25
申请号：US560463
申请日：1983-12-12
申请人： Fletcher O. Holt
发明人： Fletcher O. Holt
摘要： A once-through steam generator has both radiant and convection sections. The flue gases discharged from the convection section are passed through a wet scrubber to remove both sulfur oxides (SO.sub.x) and particulate matter. The feedwater to the convection section has its temperature controlled by the temperature of the flue gases discharged from the convection section, reducing the temperature of the feedwater by the use of a feedwater exchanger, as the convection section progressively fouls due to particulates in the flue gases. An additional heat exchanger upstream of the feedwater exchanger and convection section which scavenges additional heat from the wet scrubber liquids while the temperature of the flue gases into the scrubber are lowered to a temperature equal to or less than the water dew point temperature of the flue gases entering the scrubber.
摘要翻译： 一次通过蒸汽发生器具有辐射和对流段。 从对流段排出的烟气通过湿式洗涤器以除去硫氧化物（SOx）和颗粒物质。 对流部分的给水的温度受到对流部分排出的烟气温度的控制，通过使用给水交换器降低给水温度，因为对流部分由于烟道气中的颗粒而逐渐发生污染 。 在给水交换器和对流段上游的额外的热交换器，其清除来自湿式洗涤器液体的额外热量，同时进入洗涤器的烟道气的温度降低到等于或小于烟道气的水露点温度的温度 进入洗涤器。
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公开(公告)号：US4403571A
公开(公告)日：1983-09-13
申请号：US328893
申请日：1981-12-09
CPC分类号： F22D1/12
摘要： The steam generator includes means for limiting the heat absorption of the economizer 28 during start-up and low load operation. An air bypass duct 54 is located to convey air from cold air duct 46 at a location between forced draft fan 44 and air heater 40 to the gas duct 38. The air is introduced upstream of economizer 28 where it mixes with hot flue gases to reduce the temperature of gas flowing through the economizer. Control dampers 56 are operated to maintain the desired temperature at the economizer outlet 30.
摘要翻译： 蒸汽发生器包括用于在启动和低负载运行期间限制节能器28的吸热的装置。 空气旁路管道54被定位成将来自冷风管道46的空气在强制通风风扇44和空气加热器40之间的位置输送到气体管道38.空气在节能器28的上游引入，在此与热烟气混合以减少 气体流经节能器的温度。 操作控制阻尼器56以在节能器出口30处保持期望的温度。
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公开(公告)号：US4173949A
公开(公告)日：1979-11-13
申请号：US871212
申请日：1978-01-23
申请人： Lester A. Roethe
发明人： Lester A. Roethe
CPC分类号： F22D1/12
摘要： An improved arrangement for preheating feedwater in a steam boiler system prior to the feedwater entering a fuel economizer in order to prevent corrosion due to condensation of flue gas in the fuel economizer and in the exhaust of the boiler system. The feedwater, prior to entering the fuel economizer, is heated in a preheater with a portion of steam from a boiler. The amount of steam entering the preheater is regulated by two temperature control valves. A first temperature control valve is regulated by the temperature of the feedwater prior to entering the fuel economizer. A second temperature control valve is regulated by the temperature of the flue gas in the boiler exhaust stack.
摘要翻译： 在给水进入燃料节约器之前，在蒸汽锅炉系统中预热给水的改进布置，以便防止燃料节约器和锅炉系统的排气中的烟气冷凝引起的腐蚀。 在进入燃料节约器之前，给水在预热器中被加热，其中一部分蒸汽来自锅炉。 进入预热器的蒸汽量由两个温度控制阀调节。 在进入燃料节约器之前，第一温度控制阀由给水的温度调节。 第二温度控制阀由锅炉排气管中烟道气的温度调节。
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公开(公告)号：US10352246B2
公开(公告)日：2019-07-16
申请号：US15739898
申请日：2016-07-07
摘要： A water feeding system provided with: a first feed water line through which first feed water flows; a second feed water line through which second feed water having a lower pressure than the first feed water flows; a first heater that heats the first feed water; a first feed water introducing line that guides first heated feed water, which is the first feed water that has been heated by the first heater, to the second feed water line; a medium heat exchanger that causes the first heated feed water to exchange heat with a medium, thereby cooling the first heated feed water and heating the medium; and a cooling water injecting line that injects cooling water having a lower temperature than the first heated feed water into the first feed water introducing line, at a position located further to the second feed water line side than the medium heat exchanger.
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