IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0862662
(2010-08-24)
|
등록번호 |
US-8567196
(2013-10-29)
|
우선권정보 |
JP-2009-198370 (2009-08-28) |
발명자
/ 주소 |
- Okita, Nobuo
- Suga, Takeo
- Hirata, Haruhiko
|
출원인 / 주소 |
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
3 인용 특허 :
3 |
초록
▼
A steam turbine power plant 10 includes a steam turbine facility 20 in which power is generated by driving steam turbines with steam from a boiler 21 generating steam using combustion heat and steam from a heat collecting steam generator 31 generating steam using sunlight, and a carbon dioxide colle
A steam turbine power plant 10 includes a steam turbine facility 20 in which power is generated by driving steam turbines with steam from a boiler 21 generating steam using combustion heat and steam from a heat collecting steam generator 31 generating steam using sunlight, and a carbon dioxide collecting facility 60 in which carbon dioxide contained in combustion gas from the boiler 21 and the like is collected. Further, steam from the heat collecting steam generator 31 is delivered to a solar heat steam turbine 32 and performs expansion work, and thereafter part of the steam is delivered to the carbon dioxide collecting facility 60 via a pipe 51 and heats the absorbing liquid 100 in the recovery tower 80.
대표청구항
▼
1. A steam turbine power plant, comprising: a steam turbine facility which comprises a boiler having a super heater and at least one reheater,a first steam turbine driven by main steam delivered from the super heater,a second steam turbine driven by steam delivered from the reheater, the reheater re
1. A steam turbine power plant, comprising: a steam turbine facility which comprises a boiler having a super heater and at least one reheater,a first steam turbine driven by main steam delivered from the super heater,a second steam turbine driven by steam delivered from the reheater, the reheater reheating steam exhausted from the first steam turbine,a third steam turbine driven by steam which is exhausted from the second steam turbine,a generator coupled with at least the third steam turbine,a steam condenser condensing steam exhausted from the third steam turbine into condensate,a feed water heater provided in a water supply system between the steam condenser and the boiler to heat feed water delivered from the steam condenser,a heat collecting steam generator generating steam from part of the condensate by utilizing heat of sunlight, anda fourth steam turbine driven by at least steam delivered from the heat collecting steam generator; anda carbon dioxide collecting facility which comprises an absorbing tower having an absorbing liquid configured to absorb carbon dioxide contained in combustion gas from the boiler,a recovery tower configured to heat the absorbing liquid by utilizing heat of steam exhausted from the fourth steam turbine so as to discharge the carbon dioxide from the absorbing liquid, anda collecting apparatus collecting carbon dioxide discharged in the recovery tower. 2. The steam turbine power plant according to claim 1, wherein the fourth steam turbine is further driven by steam exhausted from the first steam turbine. 3. The steam turbine power plant according to claim 1, wherein the steam turbine facility comprises a heat accumulator accumulating part of heat obtained in the heat collecting steam generator; andwherein the heat accumulated in the heat accumulator is used to generate steam to be delivered to the fourth steam turbine. 4. The steam turbine power plant according to claim 1, wherein the reheater comprises a first reheater and a second reheater,wherein the second steam turbine comprises two steam turbines, one of the two steam turbines is driven by steam reheated in the first reheater, the other of the two steam turbines is driven by steam reheated in the second reheater,wherein steam exhausted from the one of two steam turbines is delivered to the second reheater, and steam exhausted from the other of the two steam turbines is delivered to the third steam turbine. 5. The steam turbine power plant according to claim 1, further comprising, a pressure regulating valve adjusting a pressure of steam exhausted from the fourth steam turbine. 6. The steam turbine power plant according to claim 1, wherein steam extracted from the fourth steam turbine is delivered to the second steam turbine as cooling steam of the second steam turbine. 7. The steam turbine power plant according to claim 1, further comprising, a flow regulating valve adjusting a flow rate of steam exhausted from the fourth steam turbine, the flow regulating valve being regulated based on a temperature of the absorbing liquid in the recovery tower. 8. The steam turbine power plant according to claim 1, further comprising, a flow regulating valve adjusting a flow rate of steam exhausted from the fourth steam turbine, the flow regulating valve being regulated based on a flow rate of the absorbing liquid in the recovery tower. 9. The steam turbine power plant according to claim 1, wherein the fourth steam turbine is coupled with the third steam turbine. 10. An operating method of a steam turbine power plant, comprising: generating main steam in a boiler;driving a first steam turbine by the main steam;supplying at least part of exhaust steam from the first steam turbine to the bolier to generate reheated steam;generating the reheated steam in the boiler;driving a second steam turbine by the reheated steam;driving a third steam turbine steam exhausted from the second steam turbine;condensing steam exhausted from the third steam turbine into condensate;heating the condensate by utilizing heat of steam extracted or exhausted from at least one of the first, the second, and the third steam turbines;supplying at least part of the condensate to the boiler to generate the main steam;generating steam from part of the condensate in a heat collecting steam generator by utilizing heat of sunlight;driving a fourth steam turbine by steam generated in at least the heat collecting steam generator;absorbing carbon dioxide contained in combustion gas from the boiler into an absorbing liquid;heating the absorbing liquid by utilizing heat of steam exhausted from the fourth steam turbine at a recovery tower so as to discharge the carbon dioxide; andcollecting carbon dioxide discharged from the recovery tower.
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