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    • 3. 发明申请
    • METHOD AND SYSTEM FOR HEAT RECOVERY
    • 热回收方法与系统
    • WO2006048505A1
    • 2006-05-11
    • PCT/FI2005/050371
    • 2005-10-24
    • WÄRTSILÄ FINLAND OYHÄGGLUND, Thomas
    • HÄGGLUND, Thomas
    • F01K23/10F22B33/16F22B1/18
    • F22B1/18F01K23/108F22B33/16Y02P80/152
    • The present invention relates to a method and system for heat recovery from a gas flow (2), in which method gas is led into a boiler unit (3) comprising at least an evaporator connected to a fluid circuit for generating steam. In order to increase the efficiency of steam production by way of heat recovery from the same gas flow the method employs at least two evaporators. Gas is led in the direction of the gas flow (2) past a first evaporator (4) connected to a first fluid circuit (41) and subsequently past a second evaporator (5) connected to a second fluid circuit (51), whereby the first evaporator (4) is used to generate a high pressure steam and the second evaporator (5) is used to generate a low pressure steam. High pressure steam and low pressure steam are led to a steam ejector (7) for raising the pressure of the low pressure steam in order to generate steam having a given desired pressure, useful e.g. in an industrial process or for a steam turbine. Advantageously a third evaporator (6) is placed between the first evaporator (4) and second evaporator (5) in the direction of the gas flow (2) for generating steam of a given desired pressure, whereby steam generated by the steam ejector (7) may be brought together with steam generated by the third evaporator (6) in order to further raise efficiency.
    • 本发明涉及一种用于从气流(2)进行热回收的方法和系统,其中方法将气体引入锅炉单元(3),该锅炉单元(3)至少包括连接到用于产生蒸汽的流体回路的蒸发器。 为了通过相同气体流量的热回收来提高蒸汽生产的效率,该方法采用至少两个蒸发器。 气体沿着气流(2)的方向被引导通过连接到第一流体回路(41)的第一蒸发器(4),然后通过连接到第二流体回路(51)的第二蒸发器(5),由此 第一蒸发器(4)用于产生高压蒸汽,第二蒸发器(5)用于产生低压蒸汽。 高压蒸汽和低压蒸汽被引导到蒸汽喷射器(7),用于提高低压蒸汽的压力,以产生具有给定期望压力的蒸汽,例如有用的。 在工业过程或汽轮机中。 有利地,第三蒸发器(6)沿着气流(2)的方向放置在第一蒸发器(4)和第二蒸发器(5)之间,用于产生给定期望压力的蒸汽,由此由蒸汽喷射器(7)产生的蒸汽 )可以与由第三蒸发器(6)产生的蒸汽一起被带到一起,以进一步提高效率。
    • 4. 发明申请
    • STEAM GENERATORS AND COMBINED CYCLE POWER PLANTS EMPLOYING THE SAME
    • 蒸汽发生器和组合循环电厂
    • WO1984004149A1
    • 1984-10-25
    • PCT/US1984000528
    • 1984-04-06
    • SOLAR TURBINES INCORPORATED
    • SOLAR TURBINES INCORPORATEDDUFFY, Thomas, E.ARCHIBALD, John, P.CAMPBELL, Alan, H.
    • F22B01/18
    • F01K9/00F01K23/106F22B1/1815F22B21/24F22B33/16F22B37/202Y02E20/16
    • A compact, unfired, staggered tube, once-through steam generator or boiler (26) of simple construction intended primarily for combined cycle power plants (20) in which the thermal energy utilized to generate steam is obtained from the exhaust gases of a gas turbine engine (22). The boiler (26) provides steam at two different pressure levels, which maximizes recovery of thermal energy; and all wettable components in the steam/water loop are fabricated of corrosion resistant materials. This eliminates the need for controlling the pH of the feedwater and the need for chemically controlling its dissolved oxygen content, thereby reducing maintenance and operating costs and making automatic, unattended, remotely controlled operation of the boiler practical as well as eliminating the need for blowing down the boiler (26) and minimizing requirements for make-up water. The boiler (26) can be operated dry to remove gas side fouling; and feedwater flow rates can be directly controlled. Orifice-generated pressure drops at the inlets (52, 50) of the boiler tubes (48, 46) are relatively large compared to the pressure drop in the rest of each tube (48, 46) to eliminate the flow instability that is characteristic of once-through boilers (26).
    • 一种紧凑的,未燃烧的,交错的管,直流蒸汽发生器或简单结构的锅炉(26),其主要用于联合循环发电厂(20),其中用于产生蒸汽的热能由燃气轮机的废气 发动机(22)。 锅炉(26)提供两个不同压力水平的蒸汽,这使得热能的回收最大化; 并且蒸汽/水回路中的所有可湿性部件均由耐腐蚀材料制成。 这样无需控制给水的pH值和化学控制其溶解氧含量的需要,从而降低维护和运行成本,并实现锅炉的自动,无人值守的远程控制操作,并且不需要吹扫 锅炉(26)和化妆水的最低要求。 锅炉(26)可以干燥运行,以除去气体侧面污垢; 给水流量可直接控制。 在锅炉管(48,46)的入口(52,50)处的孔口产生的压降与每个管(48,46)的其余部分中的压降相比相对较大,以消除流动不稳定性,其特征在于 一次性锅炉(26)。