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    SYSTEMS AND METHODS FOR STEAM REHEAT IN POWER PLANTS
    2.
    发明申请
    SYSTEMS AND METHODS FOR STEAM REHEAT IN POWER PLANTS 有权

    公开(公告)号：US20230096162A1

    公开(公告)日：2023-03-30

    申请号：US18072592

    申请日：2022-11-30

    申请人： GE-Hitachi Nuclear Energy Americas LLC

    发明人： Eric P. Loewen ,  Scott E. Rasmussen

    IPC分类号： F01K7/38 ,  G21D5/16 ,  F22B1/02 ,  F01K19/00 ,  F01K7/34 ,  F01K7/44 ,  F01K11/02 ,  G21D5/12 ,  G21D1/00

    摘要： Steam generators in power plants exchange energy from a primary medium to a secondary medium for energy extraction. Steam generators include one or more primary conduits and one or more secondary conduits. The conduits do not intermix the mediums and may thus discriminate among different fluid sources and destinations. One conduit may boil feedwater while another reheats steam for use in lower and higher-pressure turbines, respectively. Valves and other selectors divert steam and/or water into the steam generator or to other turbines or the environment for load balancing and other operational characteristics. Conduits circulate around an interior perimeter of the steam generator immersed in the primary medium and may have different cross-sections, radii, and internal structures depending on contained. A water conduit may have less flow area and a tighter coil radius. A steam conduit may include a swirler and rivulet stopper to intermix water in any steam flow.

    Pre-booster pumping system for increasing power generation of turbine of thermal power plant
    5.
    发明授权
    Pre-booster pumping system for increasing power generation of turbine of thermal power plant 有权

    公开(公告)号：US11280224B2

    公开(公告)日：2022-03-22

    申请号：US16828955

    申请日：2020-03-25

    申请人： Raymond Zhou Shaw ,  Bin Wu ,  Xiaoqing Pan

    发明人： Raymond Zhou Shaw ,  Bin Wu ,  Xiaoqing Pan

    IPC分类号： F01K9/00 ,  F28B9/06 ,  F01K7/38 ,  F01K11/02 ,  F28B1/02 ,  F28B7/00

    摘要： A pre-booster pumping system for increasing power generation of a turbine of a thermal power plant includes a booster pump system including an inlet end, an output end and at least one booster pump; the inlet end of the booster pump system being connected to the air draining end of the turbine through an input tube; each booster pump including an air inlet and an air outlet; the waste gas drained from the air draining end of the turbine being inputted to the booster pump; the vapor pressure being increased in the booster pump and then the vapor being outputted from the output end; and a condenser having an input end; the output end of the booster pump system being connected to the condenser through the output tube; the condenser serving to receive the waste gas from the booster pump system and cool the waste vapor as water.

    STEAM NETWORK ASSEMBLY FOR A PLANT COMPRISING AN AMMONIA-PRODUCING UNIT AND A UREA-PRODUCING UNIT
    6.
    发明申请
    STEAM NETWORK ASSEMBLY FOR A PLANT COMPRISING AN AMMONIA-PRODUCING UNIT AND A UREA-PRODUCING UNIT 有权

    公开(公告)号：US20220082032A1

    公开(公告)日：2022-03-17

    申请号：US17419815

    申请日：2020-05-08

    申请人： YARA INTERNATIONAL ASA

    发明人： Danny FRANCEUS ,  Lino Giovanni PORRO

    IPC分类号： F01K7/38 ,  F01K15/00 ,  F01K7/12 ,  C07C273/04 ,  C01C1/04

    摘要： A steam network assembly for a plant including an ammonia-producing unit and a urea-producing unit, including a high-pressure steam line, two medium-pressure steam lines and first and second turbines supplied with high-pressure steam by the high-pressure steam line; wherein the first turbine is a condensing-type turbine with extraction into one of the two medium-pressure steam lines, and is configured to deliver power to a syngas compressor in the ammonia-producing unit of the plant, and the second turbine is a counter-pressure type turbine with extraction connected to the two medium-pressure steam lines and is configured to deliver power to a CO2 compressor in the urea-producing unit of the plant. A method to distribute high-pressure steam in a steam network assembly for a plant including an ammonia-producing unit and a urea-producing unit and a method to revamp the steam network assembly for a plant including an ammonia-producing unit and a urea-producing unit.

    Solar aided coal-fired power generation system participating in primary frequency regulation and control method thereof
    7.
    发明授权
    Solar aided coal-fired power generation system participating in primary frequency regulation and control method thereof 有权

    公开(公告)号：US11236633B2

    公开(公告)日：2022-02-01

    申请号：US17279569

    申请日：2019-06-22

    申请人： XI'AN JIAOTONG UNIVERSITY

    发明人： Junjie Yan ,  Yongliang Zhao ,  Ming Liu ,  Daotong Chong

    IPC分类号： F01D15/10 ,  F01K7/38 ,  F22D1/18 ,  F22D5/34 ,  F24S20/20 ,  F22D1/50 ,  H02J3/38 ,  F22D11/06 ,  F03G6/00 ,  F03G6/06

    摘要： A solar aided coal-fired power generation system participating in primary frequency regulation and a control method thereof propose a system configuration with two regulation schemes by coupling medium-low-temperature solar collectors and a coal-fired generation unit. The two regulation schemes are a high-pressure feedwater bypass scheme and a low-pressure condensate bypass scheme. The present invention formulates a primary frequency regulation control logic, so as to efficiently and accurately participate in the primary frequency regulation, thereby keeping the power grid frequency rapidly stable. The present invention also formulates a working fluid outlet temperature control logic for the solar aided coal-fired thermal system, which adjusts a heat exchange working fluid flow of the solar collectors to ensure that the temperature in each section is stable during the primary frequency regulation. The present invention uses operation matching of the turbine system and the solar collectors to improve effectiveness of the primary frequency regulation.

    Solar aided coal-fired power generation system participating in primary frequency regulation and control method thereof
    8.
    发明申请
    Solar aided coal-fired power generation system participating in primary frequency regulation and control method thereof 有权

    公开(公告)号：US20210310365A1

    公开(公告)日：2021-10-07

    申请号：US17279569

    申请日：2019-06-22

    申请人： XI'AN JIAOTONG UNIVERSITY

    发明人： Junjie Yan ,  Yongliang Zhao ,  Ming Liu ,  Daotong Chong

    IPC分类号： F01D15/10 ,  F01K7/38 ,  F22D1/18 ,  F22D5/34 ,  F22D11/06 ,  F24S20/20 ,  F22D1/50 ,  H02J3/38

    摘要： A solar aided coal-fired power generation system participating in primary frequency regulation and a control method thereof propose a system configuration with two regulation schemes by coupling medium-low-temperature solar collectors and a coal-fired generation unit. The two regulation schemes are a high-pressure feedwater bypass scheme and a low-pressure condensate bypass scheme. The present invention formulates a primary frequency regulation control logic, so as to efficiently and accurately participate in the primary frequency regulation, thereby keeping the power grid frequency rapidly stable. The present invention also formulates a working fluid outlet temperature control logic for the solar aided coal-fired thermal system, which adjusts a heat exchange working fluid flow of the solar collectors to ensure that the temperature in each section is stable during the primary frequency regulation. The present invention uses operation matching of the turbine system and the solar collectors to improve effectiveness of the primary frequency regulation. With rational utilization of different temperature zones of different heat collectors, irreversibility is reduced, and economic efficiency of various thermal system adjustment schemes is further improved. As a result, operation flexibility of the transient process of a supplementary power generation unit can be greatly improved.