CN115217554A - Dual-fuel combined cycle steam power plant - Google Patents
Dual-fuel combined cycle steam power plant Download PDFInfo
- Publication number
- CN115217554A CN115217554A CN202111683553.8A CN202111683553A CN115217554A CN 115217554 A CN115217554 A CN 115217554A CN 202111683553 A CN202111683553 A CN 202111683553A CN 115217554 A CN115217554 A CN 115217554A
- Authority
- CN
- China
- Prior art keywords
- boiler
- communicated
- steam
- channel
- steam turbine
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000000446 fuel Substances 0.000 title claims abstract description 323
- 239000002737 fuel gas Substances 0.000 claims abstract description 134
- 239000002826 coolant Substances 0.000 claims abstract description 41
- 238000000605 extraction Methods 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims 3
- 230000009977 dual effect Effects 0.000 description 38
- 238000002485 combustion reaction Methods 0.000 description 35
- 238000010586 diagram Methods 0.000 description 13
- 238000010521 absorption reaction Methods 0.000 description 10
- 238000006243 chemical reaction Methods 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 230000009467 reduction Effects 0.000 description 5
- 239000000126 substance Substances 0.000 description 5
- 230000008901 benefit Effects 0.000 description 4
- 238000004891 communication Methods 0.000 description 4
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 4
- 239000003245 coal Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 230000008016 vaporization Effects 0.000 description 3
- 241000282414 Homo sapiens Species 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000005431 greenhouse gas Substances 0.000 description 2
- 230000002427 irreversible effect Effects 0.000 description 2
- 238000003303 reheating Methods 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 238000009834 vaporization Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 125000004435 hydrogen atom Chemical class [H]* 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000009347 mechanical transmission Effects 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000004449 solid propellant Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K13/00—General layout or general methods of operation of complete plants
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D15/00—Adaptations of machines or engines for special use; Combinations of engines with devices driven thereby
- F01D15/08—Adaptations for driving, or combinations with, pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K11/00—Plants characterised by the engines being structurally combined with boilers or condensers
- F01K11/02—Plants characterised by the engines being structurally combined with boilers or condensers the engines being turbines
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B33/00—Steam-generation plants, e.g. comprising steam boilers of different types in mutual association
- F22B33/18—Combinations of steam boilers with other apparatus
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN A CARRIER GAS OR AIR
- F23C1/00—Combustion apparatus specially adapted for combustion of two or more kinds of fuel simultaneously or alternately, at least one kind of fuel being either a fluid fuel or a solid fuel suspended in a carrier gas or air
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN A CARRIER GAS OR AIR
- F23C6/00—Combustion apparatus characterised by the combination of two or more combustion chambers or combustion zones, e.g. for staged combustion
- F23C6/04—Combustion apparatus characterised by the combination of two or more combustion chambers or combustion zones, e.g. for staged combustion in series connection
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/16—Combined cycle power plant [CCPP], or combined cycle gas turbine [CCGT]
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Engine Equipment That Uses Special Cycles (AREA)
Abstract
The invention provides a dual-fuel combined cycle steam power device, belonging to the technical field of thermodynamics and thermodynamics. The external part of the boiler is provided with a low-grade fuel channel communicated with the boiler, the external part of the boiler is also provided with an air channel communicated with a heat source heat regenerator and then divided into two paths, wherein the first path is communicated with the boiler, the second path is communicated with a second boiler through the boiler, the boiler is also provided with a first-stage fuel gas channel communicated with the second boiler, the external part of the boiler is also provided with a high-grade fuel channel communicated with the second boiler, and the second boiler is also provided with a fuel gas channel communicated with the external part through the heat source heat regenerator; the condenser is communicated with a second boiler through a booster pump, an evaporator and a boiler, the compressor is communicated with the second boiler through the boiler, the second boiler is also provided with a steam channel to be communicated with a steam turbine, and the steam turbine is also provided with a low-pressure steam channel which is directly communicated with the compressor after passing through the evaporator and is communicated with the condenser through the second steam turbine; the condenser is also provided with a cooling medium channel which is communicated with the outside, and the steam turbine is connected with the compressor and transmits power to form the dual-fuel combined cycle steam power device.
Description
The technical field is as follows:
the invention belongs to the technical field of thermodynamics and thermodynamics.
Background art:
cold demand, heat demand and power demand, which are common in human life and production; among them, the conversion of chemical energy of fuel into thermal energy by combustion and the conversion of thermal energy into mechanical energy by a steam power device are important means for providing power or electricity to human beings.
The fuel has different types and different properties, wherein the temperature of fuel gas formed by burning the fuel is closely related to the heat power conversion efficiency; from the view of the temperature of fuel gas formed by combustion (such as constant-pressure combustion temperature), the high-grade fuel with high constant-pressure combustion temperature has high temperature of combustion products, and can be independently used as a high-temperature heat source capable of meeting high-efficiency power circulation to convert more mechanical energy; and low-grade fuel with low constant pressure combustion temperature is difficult to form high-temperature combustion products and to be a high-temperature heat source capable of meeting high-efficiency power circulation independently, and the converted mechanical energy is relatively less.
Due to the limitation of the working principle or material properties or the equipment manufacturing level, and the like, in the existing steam power plant adopting high-grade fuel, part of combustion heat bears the supply of a low-temperature section of a heat source in the utilization process of the high-temperature heat source formed by the high-grade fuel, which causes the quality loss of fuel utilization, and provides an opportunity for low-grade fuel to participate in the construction of the heat source.
The invention provides a dual-fuel combined cycle steam power device which can reasonably match low-grade fuel and high-grade fuel to jointly build a heat source, realize the complementation of advantages and shortages and the complementation of advantages, greatly improve the heat power-changing efficiency of the low-grade fuel, reduce the emission of greenhouse gases and effectively reduce the fuel cost.
The invention content is as follows:
the invention mainly aims to provide a dual-fuel combined cycle steam power device, and the specific invention contents are explained in the following items:
1. the double-fuel combined cycle steam power device mainly comprises a steam turbine, a compressor, a second steam turbine, a booster pump, a condenser, an evaporator, a boiler, a second boiler and a heat source heat regenerator; the external part of the boiler is provided with a low-grade fuel channel communicated with the boiler, the external part of the boiler is also provided with an air channel communicated with a heat source heat regenerator and then divided into two paths, wherein the first path is communicated with the boiler, the second path is communicated with a second boiler through the boiler, the boiler is also provided with a first-stage fuel gas channel communicated with the second boiler, the external part of the boiler is also provided with a high-grade fuel channel communicated with the second boiler, and the second boiler is also provided with a fuel gas channel communicated with the external part through the heat source heat regenerator; the condenser is provided with a condensate pipeline, the evaporator is communicated with a second boiler through a booster pump, a steam channel is formed on the evaporator, the compressor is communicated with the second boiler, the second boiler is also provided with a steam channel communicated with a steam turbine, the steam turbine is also provided with a low-pressure steam channel communicated with the evaporator and then divided into two paths, wherein the first path is directly communicated with the compressor, and the second path is communicated with the condenser through a second steam turbine; the condenser is also provided with a cooling medium channel which is communicated with the outside, and the steam turbine is connected with the compressor and transmits power to form a dual-fuel combined cycle steam power device; wherein, or the turbine connects the compressor and the booster pump and transmits power.
2. The double-fuel combined cycle steam power device mainly comprises a steam turbine, a compressor, a second steam turbine, a booster pump, a condenser, an evaporator, a boiler, a second boiler, a heat source heat regenerator and a high-temperature heat regenerator; the external part of the boiler is provided with a low-grade fuel channel communicated with the boiler, the external part of the boiler is also provided with an air channel communicated with a heat source heat regenerator and then divided into two paths, wherein the first path is communicated with the boiler, the second path is communicated with a second boiler through the boiler, the boiler is also provided with a first-stage fuel gas channel communicated with the second boiler, the external part of the boiler is also provided with a high-grade fuel channel communicated with the second boiler, and the second boiler is also provided with a fuel gas channel communicated with the external part through the heat source heat regenerator; the condenser is provided with a condensate pipeline, the condenser is communicated with the evaporator through a booster pump, then a steam channel of the evaporator is communicated with a second boiler through a high-temperature heat regenerator, a compressor is provided with a steam channel which is communicated with the second boiler through the high-temperature heat regenerator, the second boiler is also provided with a steam channel which is communicated with a steam turbine, the steam turbine is also provided with a low-pressure steam channel which is communicated with the evaporator through the high-temperature heat regenerator and then divided into two paths, namely, the first path is directly communicated with the compressor, and the second path is communicated with the condenser through the second steam turbine; the condenser is also provided with a cooling medium channel which is communicated with the outside, and the steam turbine is connected with the compressor and transmits power to form a dual-fuel combined cycle steam power device; wherein, or the turbine connects the compressor and the booster pump and transmits power.
3. The double-fuel combined cycle steam power device mainly comprises a steam turbine, a compressor, a second steam turbine, a booster pump, a condenser, an evaporator, a boiler, a second boiler, a heat source heat regenerator and a high-temperature heat regenerator; the external part of the boiler is provided with a low-grade fuel channel communicated with the boiler, the external part of the boiler is also provided with an air channel communicated with a heat source heat regenerator and then divided into two paths, wherein the first path is communicated with the boiler, the second path is communicated with a second boiler through the boiler, the boiler is also provided with a first-stage fuel gas channel communicated with the second boiler, the external part of the boiler is also provided with a high-grade fuel channel communicated with the second boiler, and the second boiler is also provided with a fuel gas channel communicated with the external part through the heat source heat regenerator; the condenser is provided with a condensate pipeline which is communicated with the evaporator through a booster pump, then a steam channel of the evaporator is communicated with a second boiler through a high-temperature heat regenerator, a steam channel of the compressor is communicated with the second boiler through the high-temperature heat regenerator, the second boiler is also provided with a steam channel which is communicated with the steam turbine, then the steam channel of the steam turbine is communicated with the steam turbine through the high-temperature heat regenerator, and the steam turbine is also provided with a low-pressure steam channel which is communicated with the evaporator and then divided into two paths, wherein the first path is directly communicated with the compressor and the second path is communicated with the condenser through the second steam turbine; the condenser is also provided with a cooling medium channel which is communicated with the outside, and the steam turbine is connected with the compressor and transmits power to form a dual-fuel combined cycle steam power device; wherein, or the turbine connects the compressor and the booster pump and transmits power.
4. The double-fuel combined cycle steam power device mainly comprises a steam turbine, a compressor, a second steam turbine, a booster pump, a condenser, a boiler, a second boiler, a heat source heat regenerator and a heat supplier; the external part of the boiler is provided with a low-grade fuel channel communicated with the boiler, the external part of the boiler is also provided with an air channel communicated with a heat source heat regenerator and then divided into two paths, wherein the first path is communicated with the boiler, the second path is communicated with a second boiler through the boiler, the boiler is also provided with a first-stage fuel gas channel communicated with the second boiler, the external part of the boiler is also provided with a high-grade fuel channel communicated with the second boiler, and the second boiler is also provided with a fuel gas channel communicated with the external part through the heat source heat regenerator; the condenser is provided with a condensate pipeline, a boiler is communicated with a second boiler through a steam channel after the condensate pipeline is communicated with the boiler through a booster pump, a compressor is provided with a steam channel communicated with the second boiler, the second boiler is also provided with a steam channel communicated with a steam turbine, the steam turbine is also provided with a low-pressure steam channel communicated with a heat supply device and then divided into two paths, namely a first path is directly communicated with the compressor and a second path is communicated with the condenser through a second steam turbine; the condenser is also provided with a cooling medium channel communicated with the outside, the heater is also provided with a heated medium channel communicated with the outside, and the steam turbine is connected with the compressor and transmits power to form a dual-fuel combined cycle steam power device; wherein, or the turbine connects the compressor and the booster pump and transmits power.
5. The double-fuel combined cycle steam power device mainly comprises a steam turbine, a compressor, a second steam turbine, a booster pump, a condenser, an evaporator, a boiler, a second boiler and a heat source heat regenerator; the external part of the boiler is provided with a low-grade fuel channel communicated with the boiler, the external part of the boiler is also provided with an air channel communicated with a heat source heat regenerator and then divided into two paths, wherein the first path is communicated with the boiler, the second path is communicated with a second boiler through the boiler, the boiler is also provided with a first-stage fuel gas channel communicated with the second boiler, the external part of the boiler is also provided with a high-grade fuel channel communicated with the second boiler, and the second boiler is also provided with a fuel gas channel communicated with the external part through the heat source heat regenerator; the condenser is provided with a condensate pipeline, the evaporator is communicated with a boiler through a steam channel after the condensate pipeline is communicated with the evaporator through a booster pump, the boiler is also provided with a steam channel which is communicated with a steam turbine through an intermediate port, the compressor is provided with a steam channel which is communicated with a second boiler, the second boiler is also provided with a steam channel which is communicated with the steam turbine, and the steam turbine is also provided with a low-pressure steam channel which is communicated with the evaporator and then divided into two paths, namely, the first path is directly communicated with the compressor and the second path is communicated with the condenser through a second steam turbine; the condenser is also provided with a cooling medium channel which is communicated with the outside, and the steam turbine is connected with the compressor and transmits power to form a dual-fuel combined cycle steam power device; wherein, or the turbine connects the compressor and the booster pump and transmits power.
6. The dual-fuel combined cycle steam power device mainly comprises a steam turbine, a compressor, a second steam turbine, a booster pump, a condenser, an evaporator, a boiler, a second boiler, a heat source regenerator and a third steam turbine; the external part of the boiler is provided with a low-grade fuel channel communicated with the boiler, the external part of the boiler is also provided with an air channel communicated with a heat source heat regenerator and then divided into two paths, wherein the first path is communicated with the boiler, the second path is communicated with a second boiler through the boiler, the boiler is also provided with a first-stage fuel gas channel communicated with the second boiler, the external part of the boiler is also provided with a high-grade fuel channel communicated with the second boiler, and the second boiler is also provided with a fuel gas channel communicated with the external part through the heat source heat regenerator; the condenser is provided with a condensate pipeline which is communicated with the evaporator through a booster pump, then the evaporator is further provided with a steam channel which is communicated with a third steam turbine, the third steam turbine is also provided with a low-pressure steam channel which is communicated with the evaporator, the compressor is provided with a steam channel which is communicated with a second boiler, the second boiler is also provided with a steam channel which is communicated with the steam turbine, the steam turbine is also provided with a low-pressure steam channel which is communicated with the evaporator, and the evaporator is also provided with a low-pressure steam channel which is respectively communicated with the compressor directly and the condenser through the second steam turbine; the condenser is also provided with a cooling medium channel which is communicated with the outside, and the steam turbine is connected with the compressor and transmits power to form a dual-fuel combined cycle steam power device; wherein, or the turbine connects the compressor and the booster pump and transmits power.
7. The dual-fuel combined cycle steam power plant mainly comprises a steam turbine, a compressor, a second steam turbine, a booster pump, a condenser, an evaporator, a boiler, a second boiler and a heat source heat regenerator; the external part of the boiler is provided with a low-grade fuel channel communicated with the boiler, the external part of the boiler is also provided with an air channel communicated with a heat source heat regenerator and then divided into two paths, wherein the first path is communicated with the boiler, the second path is communicated with a second boiler through the boiler, the boiler is also provided with a first-stage fuel gas channel communicated with the second boiler, the external part of the boiler is also provided with a high-grade fuel channel communicated with the second boiler, and the second boiler is also provided with a fuel gas channel communicated with the external part through the heat source heat regenerator; the condenser is provided with a condensate pipeline, a booster pump is communicated with the evaporator, then a steam channel of the evaporator is communicated with a second boiler through a boiler, a steam channel of the compressor is communicated with the second boiler through the boiler, a steam channel of the second boiler is communicated with a steam turbine, and the steam turbine is also provided with a low-pressure steam channel which is communicated with the evaporator and then divided into two paths, namely a first path is directly communicated with the compressor and a second path is communicated with the condenser through a second steam turbine; the condenser is also provided with a cooling medium channel which is communicated with the outside, and the steam turbine is connected with the compressor and transmits power to form a dual-fuel combined cycle steam power device; wherein, or the turbine connects the compressor and the booster pump and transmits power.
8. The dual-fuel combined cycle steam power device mainly comprises a steam turbine, a compressor, a second steam turbine, a booster pump, a condenser, an evaporator, a boiler, a second boiler, a heat source heat regenerator and a high-temperature heat regenerator; the external part of the boiler is provided with a low-grade fuel channel communicated with the boiler, the external part of the boiler is also provided with an air channel which is divided into two paths after being communicated with a heat source heat regenerator, wherein the first path is communicated with the boiler, the second path is communicated with a second boiler through the boiler, the boiler is also provided with a first section fuel gas channel communicated with the second boiler, the external part of the boiler is also provided with a high-grade fuel channel communicated with the second boiler, and the second boiler is also provided with a fuel gas channel communicated with the external part through the heat source heat regenerator; the condenser is provided with a condensate pipeline, a booster pump is communicated with the evaporator, then a steam channel of the evaporator is communicated with a second boiler through a high-temperature heat regenerator and a boiler, a compressor is provided with a steam channel, the high-temperature heat regenerator and the boiler are communicated with the second boiler, the second boiler is also provided with a steam channel communicated with a steam turbine, the steam turbine is also provided with a low-pressure steam channel, and the low-pressure steam channel is divided into two paths after being communicated with the evaporator through the high-temperature heat regenerator, wherein the first path is directly communicated with the compressor, and the second path is communicated with the condenser through the second steam turbine; the condenser is also provided with a cooling medium channel which is communicated with the outside, and the steam turbine is connected with the compressor and transmits power to form a dual-fuel combined cycle steam power device; wherein, or the turbine connects the compressor and the booster pump and transmits power.
9. The dual-fuel combined cycle steam power device mainly comprises a steam turbine, a compressor, a second steam turbine, a booster pump, a condenser, an evaporator, a boiler, a second boiler, a heat source heat regenerator and a high-temperature heat regenerator; the external part of the boiler is provided with a low-grade fuel channel communicated with the boiler, the external part of the boiler is also provided with an air channel which is divided into two paths after being communicated with a heat source heat regenerator, wherein the first path is communicated with the boiler, the second path is communicated with a second boiler through the boiler, the boiler is also provided with a first section fuel gas channel communicated with the second boiler, the external part of the boiler is also provided with a high-grade fuel channel communicated with the second boiler, and the second boiler is also provided with a fuel gas channel communicated with the external part through the heat source heat regenerator; the condenser is provided with a condensate pipeline, a booster pump is communicated with the evaporator, then a steam channel of the evaporator is communicated with a second boiler through a high-temperature heat regenerator and a boiler, a steam channel of the compressor is communicated with the second boiler through the high-temperature heat regenerator and the boiler, the second boiler is also provided with a steam channel which is communicated with a steam turbine, then the steam channel of the steam turbine is communicated with the steam turbine, the steam turbine is further provided with a steam channel which is communicated with the steam turbine, then the steam channel is divided into two paths, namely, the first path is directly communicated with the compressor, and the second path is communicated with the condenser through the second steam turbine; the condenser is also provided with a cooling medium channel which is communicated with the outside, and the steam turbine is connected with the compressor and transmits power to form a dual-fuel combined cycle steam power device; wherein, or the turbine connects the compressor and the booster pump and transmits power.
10. The double-fuel combined cycle steam power device mainly comprises a steam turbine, a compressor, a second steam turbine, a booster pump, a condenser, a boiler, a second boiler, a heat source heat regenerator and a heat supplier; the external part of the boiler is provided with a low-grade fuel channel communicated with the boiler, the external part of the boiler is also provided with an air channel communicated with a heat source heat regenerator and then divided into two paths, wherein the first path is communicated with the boiler, the second path is communicated with a second boiler through the boiler, the boiler is also provided with a first-stage fuel gas channel communicated with the second boiler, the external part of the boiler is also provided with a high-grade fuel channel communicated with the second boiler, and the second boiler is also provided with a fuel gas channel communicated with the external part through the heat source heat regenerator; the condenser is provided with a condensate pipeline, a boiler is communicated with a second boiler through a steam channel after the condensate pipeline is communicated with the boiler through a booster pump, a compressor is provided with a steam channel, the boiler is communicated with the second boiler through the boiler, the second boiler is also provided with a steam channel, the steam channel is communicated with a steam turbine, the steam turbine is also provided with a low-pressure steam channel, the low-pressure steam channel is communicated with a heat supply device and then divided into two paths, namely the first path is directly communicated with the compressor, and the second path is communicated with the condenser through a second steam turbine; the condenser is also provided with a cooling medium channel communicated with the outside, the heat supplier is also provided with a heated medium channel communicated with the outside, and the steam turbine is connected with the compressor and transmits power to form a dual-fuel combined cycle steam power device; wherein, or the turbine connects the compressor and the booster pump and transmits power.
11. The double-fuel combined cycle steam power device mainly comprises a steam turbine, a compressor, a second steam turbine, a booster pump, a condenser, an evaporator, a boiler, a second boiler and a heat source heat regenerator; the external part of the boiler is provided with a low-grade fuel channel communicated with the boiler, the external part of the boiler is also provided with an air channel communicated with a heat source heat regenerator and then divided into two paths, wherein the first path is communicated with the boiler, the second path is communicated with a second boiler through the boiler, the boiler is also provided with a first-stage fuel gas channel communicated with the second boiler, the external part of the boiler is also provided with a high-grade fuel channel communicated with the second boiler, and the second boiler is also provided with a fuel gas channel communicated with the external part through the heat source heat regenerator; the condenser is provided with a condensate pipeline, the evaporator is communicated with a boiler through a booster pump, the boiler is further provided with a steam channel which is communicated with a steam turbine through an intermediate port, the compressor is provided with a steam channel which is communicated with a second boiler through the boiler, the second boiler is further provided with a steam channel which is communicated with the steam turbine, and the steam turbine is further provided with a low-pressure steam channel which is communicated with the evaporator and then divided into two paths, wherein the first path is directly communicated with the compressor and the second path is communicated with the condenser through a second steam turbine; the condenser is also provided with a cooling medium channel which is communicated with the outside, and the steam turbine is connected with the compressor and transmits power to form a dual-fuel combined cycle steam power device; wherein, or the turbine connects the compressor and the booster pump and transmits power.
12. The dual-fuel combined cycle steam power device mainly comprises a steam turbine, a compressor, a second steam turbine, a booster pump, a condenser, an evaporator, a boiler, a second boiler, a heat source regenerator and a third steam turbine; the external part of the boiler is provided with a low-grade fuel channel communicated with the boiler, the external part of the boiler is also provided with an air channel which is divided into two paths after being communicated with a heat source heat regenerator, wherein the first path is communicated with the boiler, the second path is communicated with a second boiler through the boiler, the boiler is also provided with a first section fuel gas channel communicated with the second boiler, the external part of the boiler is also provided with a high-grade fuel channel communicated with the second boiler, and the second boiler is also provided with a fuel gas channel communicated with the external part through the heat source heat regenerator; the condenser is provided with a condensate pipeline which is communicated with the evaporator through a booster pump, then the evaporator is further provided with a steam channel which is communicated with a third steam turbine, the third steam turbine is also provided with a low-pressure steam channel which is communicated with the evaporator, the compressor is provided with a steam channel which is communicated with a second boiler through a boiler, the second boiler is further provided with a steam channel which is communicated with the steam turbine, the steam turbine is also provided with a low-pressure steam channel which is communicated with the evaporator, and the evaporator is also provided with a low-pressure steam channel which is respectively communicated with the compressor directly and the condenser through the second steam turbine; the condenser is also provided with a cooling medium channel which is communicated with the outside, and the steam turbine is connected with the compressor and transmits power to form a dual-fuel combined cycle steam power device; wherein, or the turbine connects the compressor and the booster pump and transmits power.
13. A dual-fuel combined cycle steam power device is characterized in that in any one of the dual-fuel combined cycle steam power devices 1-12, a second boiler is provided with a steam channel to be communicated with a steam turbine, the communication between the second boiler and the steam turbine is adjusted to be that the steam turbine is also provided with a reheat steam channel to be communicated with the steam turbine through the boiler, and thus the dual-fuel combined cycle steam power device is formed.
14. A dual-fuel combined cycle steam power device is characterized in that in any one of the dual-fuel combined cycle steam power devices 1-12, a second boiler is provided with a steam passage which is communicated with a steam turbine, the communication between the second boiler and the steam turbine is adjusted to be that the steam turbine is also provided with a reheat steam passage which is communicated with the steam turbine through the second boiler, and thus the dual-fuel combined cycle steam power device is formed.
15. A dual-fuel combined cycle steam power device is characterized in that in any one of the dual-fuel combined cycle steam power devices 1-12, a second boiler is provided with a steam channel to be communicated with a steam turbine, the communication between the second boiler and the steam turbine is adjusted to be that after the second boiler is provided with the steam channel to be communicated with the steam turbine, the steam turbine is also provided with a reheat steam channel to be communicated with the steam turbine through the boiler and the second boiler, and the dual-fuel combined cycle steam power device is formed.
16. A dual-fuel combined cycle steam power device is characterized in that a heat regenerator and a second booster pump are added in any one of the dual-fuel combined cycle steam power devices in items 1-15, a condenser with a condensate pipeline communicated with the booster pump is adjusted to be communicated with the condenser with the condensate pipeline communicated with the heat regenerator through the second booster pump, a compressor is provided with a steam extraction channel communicated with the heat regenerator, and the heat regenerator is further communicated with the booster pump through the condensate pipeline to form the dual-fuel combined cycle steam power device.
17. A dual-fuel combined cycle steam power device is characterized in that in any one of the dual-fuel combined cycle steam power devices 1-15, an expansion speed increaser is added to replace a steam turbine, a dual-energy compressor is added to replace a compressor, and a diffuser pipe is added to replace a booster pump, so that the dual-fuel combined cycle steam power device is formed.
18. A dual-fuel combined cycle steam power plant, which is characterized in that in any one of the dual-fuel combined cycle steam power plants described in the item 16, an expansion speed increaser is added to replace a steam turbine, a dual-energy compressor is added to replace a compressor, a diffuser pipe is added to replace a booster pump, and a second diffuser pipe is added to replace a second booster pump, so that the dual-fuel combined cycle steam power plant is formed.
19. A dual-fuel combined cycle steam power device is characterized in that in any one of the dual-fuel combined cycle steam power devices 1-15, an expansion speed increaser is added to replace a second steam turbine, a diffuser pipe is added to replace a booster pump, and the dual-fuel combined cycle steam power device is formed.
20. A dual-fuel combined cycle steam power device is characterized in that in any one of the dual-fuel combined cycle steam power devices 1-19, an external air channel is communicated with a heat source heat regenerator and then divided into two paths, wherein the first path is communicated with a boiler, the second path is communicated with a second boiler through the boiler, and the external air channel is adjusted to be communicated with the boiler through the heat source heat regenerator to form the dual-fuel combined cycle steam power device.
Description of the drawings:
FIG. 1 is a schematic thermodynamic system diagram of a dual fuel combined cycle steam power plant 1 provided in accordance with the present invention.
FIG. 2 is a schematic thermodynamic system diagram of a dual fuel combined cycle steam power plant of type 2 provided in accordance with the present invention.
FIG. 3 is a diagram of a 3 rd principle thermodynamic system of a dual fuel combined cycle steam power plant provided in accordance with the present invention.
FIG. 4 is a diagram of a 4 th principle thermodynamic system of a dual fuel combined cycle steam power plant provided in accordance with the present invention.
FIG. 5 is a diagram of a 5 th principle thermodynamic system of a dual fuel combined cycle steam power plant provided in accordance with the present invention.
Fig. 6 is a diagram of a 6 th principle thermodynamic system of a dual fuel combined cycle steam power plant provided in accordance with the present invention.
FIG. 7 is a 7 th principle thermodynamic system diagram of a dual fuel combined cycle steam power plant provided in accordance with the present invention.
FIG. 8 is a diagram of an 8 th principle thermodynamic system of a dual fuel combined cycle steam power plant provided in accordance with the present invention.
Fig. 9 is a diagram of a 9 th principle thermodynamic system of a dual fuel combined cycle steam power plant provided in accordance with the present invention.
FIG. 10 is a 10 th principal thermodynamic system diagram of a dual fuel combined cycle steam power plant provided in accordance with the present invention.
FIG. 11 is a diagram of a 11 th principle thermodynamic system of a dual fuel combined cycle steam power plant provided in accordance with the present invention.
FIG. 12 is a diagram of a 12 th principle thermodynamic system of a dual fuel combined cycle steam power plant provided in accordance with the present invention.
Fig. 13 is a 13 th principle thermodynamic system diagram of a dual fuel combined cycle steam power plant provided in accordance with the present invention.
In the figure, 1-steam turbine, 2-compressor, 3-second steam turbine, 4-booster pump, 5-condenser, 6-evaporator, 7-boiler, 8-second boiler, 9-heat source regenerator, 10-high temperature regenerator, 11-heat supplier, 12-third steam turbine, 13-regenerator, 14-second booster pump, 15-expansion speed increaser, 16-dual-energy compressor, 17-diffuser pipe, and 18-second diffuser pipe.
(1) In order to reveal the differences in the operational sequences between the steam turbine 1 and the expansion gear-box 15, the following is explained here:
(1) in the dual-fuel combined cycle steam power plant shown in fig. 1, steam flows through the steam turbine 1 to realize heat-to-power conversion, the steam at the outlet of the steam turbine 1 has very low pressure and small flow rate (corresponding to small kinetic energy), and the mechanical energy required by the compressor 2 and the booster pump 4 can be provided by the steam turbine 1 through mechanical transmission or by the outside.
(2) In contrast, in the steam power plant shown in fig. 10, the steam at the outlet of the expansion speed increaser 15 also has a very low pressure, but the flow rate is relatively large (a part of the pressure drop is converted into the kinetic energy of the low-pressure steam) to meet the requirement of reducing the speed and increasing the pressure of the diffuser pipe 17, and meanwhile, part of the mechanical energy is transmitted to the dual-energy compressor 16 through the circulating working medium itself for the requirement of increasing the pressure and the temperature.
(3) The process of realizing thermal work change by the high-pressure high-temperature steam flowing through the steam turbine 1 in fig. 1 adopts 'pressure reduction work', and the process of realizing thermal work change by the high-pressure high-temperature steam flowing through the expansion speed increaser 15 in fig. 10 adopts 'pressure reduction work and speed increase'.
(2) Description on two boilers:
(1) the heat source regenerator relates to the temperature grade of fuel gas in a boiler and is listed separately.
(2) According to the requirement, a related heat exchanger (heat exchange tube bundle) is arranged in the boiler, such as an economizer which heats and raises the temperature of the condensate after the pressure of the booster pump is raised if necessary; there are an evaporator, a reheater for reheating steam, and the like.
(3) The specific heat exchange tube bundle (economizer, evaporator or reheater) involved in the heating and vaporization or reheating of the circulating medium flowing through the boiler is not specifically indicated, but the boiler is uniformly used for expression.
(4) In the present application, the boiler 7 undertakes the task of heating the air entering the second boiler 8; in some cases, the heating and vaporizing of the circulating condensate is also undertaken.
(3) Description of the fuels:
(1) low-grade fuel: refers to a fuel with relatively low highest temperature (such as adiabatic combustion temperature or constant pressure combustion temperature) formed by combustion products, such as coal gangue, coal slime, combustible refuse and the like. From the concept of heat source, low grade fuel refers to fuel whose combustion products are difficult to form a high temperature heat source of higher temperature.
(2) High-grade fuel: refers to a fuel such as high quality coal, natural gas, methane, hydrogen, etc., that has a relatively high maximum temperature at which combustion products can form (e.g., adiabatic combustion temperature or fixed pressure combustion temperature). From the concept of heat source, a high grade fuel refers to a fuel whose combustion products can form a high temperature heat source of higher temperature.
The fuel formed after the high-grade fuel is mixed with part of the low-grade fuel, and the highest temperature (such as adiabatic combustion temperature or constant pressure combustion temperature) which can be formed by combustion products of the fuel is higher than that of the low-grade fuel; in contrast, the fuel is a high grade fuel — it should be noted that the fuel still forms a high temperature heat source to meet the thermodynamic cycle requirements.
(3) With the same fuel, the boiler 7 is responsible for heating the air, which increases the temperature of the combustion products (high temperature heat source) formed by the fuel, which is converted to (like) high grade fuel for low grade fuel, by the technology described in the claims of this patent application.
(4) For solid fuels, the gaseous substances of the combustion products are the core of the heat source and are important components of the thermodynamic system; the solid substances in the combustion products, such as the waste slag, contained in the heat energy is discharged after being utilized (the utilization process and the equipment are contained in the boiler, or the air is preheated outside the boiler body), and the solid substances do not need to be listed separately, and the functions of the solid substances are not expressed separately.
(5) The grade of the fuel is divided by the highest temperature formed by combustion products minus the temperature difference of indirect heat transfer, especially for the fuel which needs to provide driving high-temperature heat load to the circulating working medium by indirect means; or, the temperature that the circulating working medium can reach is divided according to the temperature that the circulating working medium can reach under the existing technical conditions, namely the one with higher temperature that the circulating working medium (working medium) can reach is the high-grade fuel, and the one with lower temperature that the circulating working medium (working medium) can reach is the low-grade fuel.
(4) Statement regarding initial gas:
the primary fuel gas refers to a combustion product formed by burning air and low-grade fuel in the boiler 7, and the following three conditions exist according to whether air required by burning the high-grade fuel is reserved in the primary fuel gas:
(1) the primary section fuel gas does not contain air required by the combustion of the high-grade fuel of the second boiler 8; as shown in fig. 1-12.
(2) The primary section fuel gas contains part of air required by the combustion of high-grade fuel of the second boiler 8; as shown in fig. 1-12.
(3) The primary section fuel gas contains all or most (when the fuel is conveyed by a small amount of air) of air required by the combustion of the high-grade fuel of the second boiler 8; as shown in fig. 13.
The specific implementation mode is as follows:
it is to be noted that, in the description of the structure and the flow, the repetition is not necessary; obvious flow is not described. The invention is described in detail below with reference to the figures and examples.
The dual fuel combined cycle steam power plant shown in fig. 1 is implemented as follows:
(1) Structurally, the system mainly comprises a steam turbine, a compressor, a second steam turbine, a booster pump, a condenser, an evaporator, a boiler, a second boiler and a heat source heat regenerator; the external part is provided with a low-grade fuel channel communicated with the boiler 7, the external part is also provided with an air channel communicated with the heat source heat regenerator 9 and then divided into two paths, wherein the first path is communicated with the boiler 7, the second path is communicated with the second boiler 8 through the boiler 7, the boiler 7 is also provided with a primary section fuel gas channel communicated with the second boiler 8, the external part is also provided with a high-grade fuel channel communicated with the second boiler 8, and the second boiler 8 is also provided with a fuel gas channel communicated with the external part through the heat source heat regenerator 9; the condenser 5 has a condensate pipeline, after the condensate pipeline is communicated with the evaporator 6 through the booster pump 4, the evaporator 6 is provided with a steam channel communicated with the second boiler 8, the compressor 2 is provided with a steam channel communicated with the second boiler 8, the second boiler 8 is also provided with a steam channel communicated with the steam turbine 1, the steam turbine 1 is also provided with a low-pressure steam channel communicated with the evaporator 6 and then divided into two paths, wherein the first path is directly communicated with the compressor 2, and the second path is communicated with the condenser 5 through the second steam turbine 3; the condenser 5 is also communicated with the outside through a cooling medium channel, and the steam turbine 1 is connected with the compressor 2 and transmits power.
(2) In the flow, the external air is divided into two paths after flowing through the heat source heat regenerator 9 to absorb heat and raise the temperature, wherein the first path directly enters the boiler 7 to participate in the combustion process, and the second path flows through the boiler 7 to continuously absorb heat and raise the temperature and then enters the second boiler 8; the external low-grade fuel enters a boiler 7, the low-grade fuel and air are mixed in the boiler 7 and are combusted into primary section fuel gas with higher temperature, and the primary section fuel gas releases heat to air flowing through the primary section fuel gas and then enters a second boiler 8; the external high-grade fuel enters a second boiler 8, the high-grade fuel is mixed with the primary section fuel gas and air from the boiler 7 and is combusted into high-temperature fuel gas, the high-temperature fuel gas releases heat to the circulating working medium flowing through the high-temperature fuel gas and is cooled, and then the high-temperature fuel gas flows through a heat source heat regenerator 9 to release heat and be cooled and is discharged outwards; the condensate of the condenser 5 is boosted by the booster pump 4, passes through the evaporator 6 to absorb heat, raise temperature, vaporize and overheat, then enters the second boiler 8 to absorb heat and raise temperature, and the steam discharged by the compressor 2 enters the second boiler 8 to absorb heat and raise temperature; the steam discharged by the second boiler 8 is decompressed and does work through the steam turbine 1, the low-pressure steam discharged by the steam turbine 1 is released heat and cooled through the evaporator 6, and then is divided into two paths, wherein the first path enters the compressor 2 to be boosted and heated, and the second path enters the condenser 5 to be released heat and condensed after being decompressed and done through the second steam turbine 3; the low-grade fuel and the high-grade fuel jointly provide driving heat load through a boiler 7 and a second boiler 8, and the cooling medium takes away the low-temperature heat load through a condenser 5; the work output by the steam turbine 1 and the second steam turbine 3 is provided for the compressor 2 and the external actuating power, or the work output by the steam turbine 1 and the second steam turbine 3 is provided for the compressor 2, the booster pump 4 and the external actuating power, so that a dual-fuel combined cycle steam power device is formed.
The dual fuel combined cycle steam power plant shown in fig. 2 is implemented as follows:
(1) Structurally, the system mainly comprises a steam turbine, a compressor, a second steam turbine, a booster pump, a condenser, an evaporator, a boiler, a second boiler, a heat source heat regenerator and a high-temperature heat regenerator; the external part is provided with a low-grade fuel channel communicated with the boiler 7, the external part is also provided with an air channel communicated with the heat source heat regenerator 9 and then divided into two paths, wherein the first path is communicated with the boiler 7, the second path is communicated with the second boiler 8 through the boiler 7, the boiler 7 is also provided with a primary section fuel gas channel communicated with the second boiler 8, the external part is also provided with a high-grade fuel channel communicated with the second boiler 8, and the second boiler 8 is also provided with a fuel gas channel communicated with the external part through the heat source heat regenerator 9; the condenser 5 has a condensate pipeline which is communicated with the evaporator 6 through the booster pump 4, then the evaporator 6 is provided with a steam channel which is communicated with the second boiler 8 through the high-temperature heat regenerator 10, the compressor 2 is provided with a steam channel which is communicated with the second boiler 8 through the high-temperature heat regenerator 10, the second boiler 8 is also provided with a steam channel which is communicated with the steam turbine 1, the steam turbine 1 is also provided with a low-pressure steam channel which is communicated with the evaporator 6 through the high-temperature heat regenerator 10 and then divided into two paths, wherein the first path is directly communicated with the compressor 2, and the second path is communicated with the condenser 5 through the second steam turbine 3; the condenser 5 is also communicated with the outside through a cooling medium channel, and the steam turbine 1 is connected with the compressor 2 and transmits power.
(2) In the flow, the external air is divided into two paths after flowing through the heat source heat regenerator 9 for heat absorption and temperature rise, wherein the first path directly enters the boiler 7 to participate in the combustion process, and the second path continuously absorbs heat and temperature rises after flowing through the boiler 7 and then enters the second boiler 8; the external low-grade fuel enters the boiler 7, the low-grade fuel and air are mixed in the boiler 7 and are combusted into primary section fuel gas with higher temperature, and the primary section fuel gas releases heat to air flowing through the primary section fuel gas and then enters the second boiler 8; external high-grade fuel enters a second boiler 8, the high-grade fuel is mixed with primary fuel gas and air from a boiler 7 and is combusted into high-temperature fuel gas, the high-temperature fuel gas releases heat to a circulating working medium flowing through the high-temperature fuel gas and is cooled, and then the high-temperature fuel gas flows through a heat source heat regenerator 9 to release heat, cool and discharge the high-temperature fuel gas to the outside; the condensate of the condenser 5 is boosted by the booster pump 4, absorbed by the evaporator 6, heated, vaporized and overheated, absorbed by the high-temperature heat regenerator 10, heated, and then enters the second boiler 8 for heat absorption and heating; steam discharged by the compressor 2 flows through the high-temperature heat regenerator 10 to absorb heat and raise the temperature, and then enters the second boiler 8 to absorb heat and raise the temperature; the steam discharged by the second boiler 8 flows through the steam turbine 1 to reduce the pressure and do work, the low-pressure steam discharged by the steam turbine 1 flows through the high-temperature heat regenerator 10 and the evaporator 6 to gradually release heat and reduce the temperature, and then the low-pressure steam is divided into two paths, wherein the first path enters the compressor 2 to increase the pressure and the temperature, and the second path flows through the second steam turbine 3 to reduce the pressure and do work and then enters the condenser 5 to release heat and condense; the low-grade fuel and the high-grade fuel jointly provide driving heat load through a boiler 7 and a second boiler 8, and the cooling medium takes away low-temperature heat load through a condenser 5; the work output by the steam turbine 1 and the second steam turbine 3 is provided for the compressor 2 and the external actuating power, or the work output by the steam turbine 1 and the second steam turbine 3 is provided for the compressor 2, the booster pump 4 and the external actuating power, so that a dual-fuel combined cycle steam power device is formed.
The dual fuel combined cycle steam power plant shown in fig. 3 is implemented as follows:
(1) Structurally, the system mainly comprises a steam turbine, a compressor, a second steam turbine, a booster pump, a condenser, an evaporator, a boiler, a second boiler, a heat source heat regenerator and a high-temperature heat regenerator; the external part is provided with a low-grade fuel channel communicated with the boiler 7, the external part is also provided with an air channel communicated with the heat source heat regenerator 9 and then divided into two paths, wherein the first path is communicated with the boiler 7, the second path is communicated with the second boiler 8 through the boiler 7, the boiler 7 is also provided with a primary section fuel gas channel communicated with the second boiler 8, the external part is also provided with a high-grade fuel channel communicated with the second boiler 8, and the second boiler 8 is also provided with a fuel gas channel communicated with the external part through the heat source heat regenerator 9; the condenser 5 has a condensate pipeline which is communicated with the evaporator 6 through the booster pump 4, then the evaporator 6 is provided with a steam channel which is communicated with the second boiler 8 through the high-temperature heat regenerator 10, the compressor 2 is provided with a steam channel which is communicated with the second boiler 8 through the high-temperature heat regenerator 10, the second boiler 8 is also provided with a steam channel which is communicated with the steam turbine 1, then the steam channel of the steam turbine 1 is provided with a steam channel which is communicated with the steam turbine 1 and is communicated with the steam turbine 1 through the high-temperature heat regenerator 10, the steam turbine 1 is also provided with a low-pressure steam channel which is communicated with the evaporator 6 and then divided into two paths, wherein the first path is directly communicated with the compressor 2, and the second path is communicated with the condenser 5 through the second steam turbine 3; the condenser 5 is also communicated with the outside through a cooling medium channel, and the steam turbine 1 is connected with the compressor 2 and transmits power.
(2) In the flow, the external air is divided into two paths after flowing through the heat source heat regenerator 9 for heat absorption and temperature rise, wherein the first path directly enters the boiler 7 to participate in the combustion process, and the second path continuously absorbs heat and temperature rises after flowing through the boiler 7 and then enters the second boiler 8; the external low-grade fuel enters the boiler 7, the low-grade fuel and air are mixed in the boiler 7 and are combusted into primary section fuel gas with higher temperature, and the primary section fuel gas releases heat to air flowing through the primary section fuel gas and then enters the second boiler 8; external high-grade fuel enters a second boiler 8, the high-grade fuel is mixed with primary fuel gas and air from a boiler 7 and is combusted into high-temperature fuel gas, the high-temperature fuel gas releases heat to a circulating working medium flowing through the high-temperature fuel gas and is cooled, and then the high-temperature fuel gas flows through a heat source heat regenerator 9 to release heat, cool and discharge the high-temperature fuel gas to the outside; the condensate of the condenser 5 is boosted by the booster pump 4, absorbed, heated, vaporized and overheated by the evaporator 6, absorbed and heated by the high-temperature heat regenerator 10, and absorbed and heated by the second boiler 8; steam discharged by the compressor 2 flows through the high-temperature heat regenerator 10 to absorb heat and raise the temperature, and then enters the second boiler 8 to absorb heat and raise the temperature; the steam discharged by the second boiler 8 enters the steam turbine 1 to reduce pressure and work to a certain degree, then flows through the high-temperature heat regenerator 10 to release heat and reduce temperature, and then enters the steam turbine 1 to continue reducing pressure and work; the low-pressure steam discharged by the steam turbine 1 passes through the evaporator 6 to release heat and reduce the temperature, and then is divided into two paths, wherein the first path enters the compressor 2 to increase the pressure and the temperature, and the second path passes through the second steam turbine 3 to reduce the pressure and do work and then enters the condenser 5 to release heat and condense; the low-grade fuel and the high-grade fuel jointly provide driving heat load through a boiler 7 and a second boiler 8, and the cooling medium takes away low-temperature heat load through a condenser 5; the work output by the steam turbine 1 and the second steam turbine 3 is provided for the compressor 2 and external actuating power, or the work output by the steam turbine 1 and the second steam turbine 3 is provided for the compressor 2, the booster pump 4 and external actuating power, so that a dual-fuel combined cycle steam power device is formed.
The dual fuel combined cycle steam power plant shown in fig. 4 is implemented as follows:
(1) Structurally, the system mainly comprises a steam turbine, a compressor, a second steam turbine, a booster pump, a condenser, a boiler, a second boiler, a heat source heat regenerator and a heat supplier; the external part is provided with a low-grade fuel channel communicated with the boiler 7, the external part is also provided with an air channel which is divided into two paths after being communicated with the heat source heat regenerator 9, the first path is communicated with the boiler 7, the second path is communicated with the second boiler 8 through the boiler 7, the boiler 7 is also provided with a primary section fuel gas channel communicated with the second boiler 8, the external part is also provided with a high-grade fuel channel communicated with the second boiler 8, and the second boiler 8 is also provided with a fuel gas channel communicated with the external part through the heat source heat regenerator 9; the condenser 5 is provided with a condensate pipeline, a booster pump 4 is communicated with a boiler 7, then a steam channel of the boiler 7 is communicated with a second boiler 8, a steam channel of the compressor 2 is communicated with the second boiler 8, the steam channel of the second boiler 8 is communicated with the steam turbine 1, the low-pressure steam channel of the steam turbine 1 is communicated with a heat supply device 11 and then divided into two paths, namely, the first path is directly communicated with the compressor 2, and the second path is communicated with the condenser 5 through the second steam turbine 3; the condenser 5 is also communicated with the outside through a cooling medium channel, the heat supply device 11 is also communicated with the outside through a heated medium channel, and the steam turbine 1 is connected with the compressor 2 and transmits power.
(2) In the flow, the external air is divided into two paths after flowing through the heat source heat regenerator 9 for heat absorption and temperature rise, wherein the first path directly enters the boiler 7 to participate in the combustion process, and the second path continuously absorbs heat and temperature rises after flowing through the boiler 7 and then enters the second boiler 8; the external low-grade fuel enters the boiler 7, the low-grade fuel and air are mixed in the boiler 7 and are combusted into primary section fuel gas with higher temperature, and the primary section fuel gas releases heat to air flowing through the primary section fuel gas and then enters the second boiler 8; the external high-grade fuel enters a second boiler 8, the high-grade fuel is mixed with the primary section fuel gas and air from the boiler 7 and is combusted into high-temperature fuel gas, the high-temperature fuel gas releases heat to the circulating working medium flowing through the high-temperature fuel gas and is cooled, and then the high-temperature fuel gas flows through a heat source heat regenerator 9 to release heat and be cooled and is discharged outwards; the condensate of the condenser 5 is boosted by the booster pump 4, flows through the boiler 7 to absorb heat, is boosted and vaporized, then enters the second boiler 8 to continuously absorb heat, and the steam discharged by the compressor 2 enters the second boiler 8 to absorb heat; the steam discharged by the second boiler 8 is decompressed and does work through the steam turbine 1, the low-pressure steam discharged by the steam turbine 1 is released heat and cooled through the heat supply device 11, and then is divided into two paths, wherein the first path enters the compressor 2 to be boosted and heated, and the second path enters the condenser 5 to be released heat and condensed after being decompressed and done through the second steam turbine 3; the low-grade fuel and the high-grade fuel jointly provide driving heat load through a boiler 7 and a second boiler 8, cooling medium takes away low-temperature heat load through a condenser 5, and heated medium takes away medium-temperature heat load through a heater 11; the work output by the steam turbine 1 and the second steam turbine 3 is provided for the compressor 2 and the external actuating power, or the work output by the steam turbine 1 and the second steam turbine 3 is provided for the compressor 2, the booster pump 4 and the external actuating power, so that a dual-fuel combined cycle steam power device is formed.
The dual fuel combined cycle steam power plant shown in fig. 5 is implemented as follows:
(1) Structurally, the system mainly comprises a steam turbine, a compressor, a second steam turbine, a booster pump, a condenser, an evaporator, a boiler, a second boiler and a heat source heat regenerator; the external part is provided with a low-grade fuel channel communicated with the boiler 7, the external part is also provided with an air channel communicated with the heat source heat regenerator 9 and then divided into two paths, wherein the first path is communicated with the boiler 7, the second path is communicated with the second boiler 8 through the boiler 7, the boiler 7 is also provided with a primary section fuel gas channel communicated with the second boiler 8, the external part is also provided with a high-grade fuel channel communicated with the second boiler 8, and the second boiler 8 is also provided with a fuel gas channel communicated with the external part through the heat source heat regenerator 9; the condenser 5 has a condensate pipeline which is communicated with the evaporator 6 through the booster pump 4, then the evaporator 6 is further provided with a steam channel which is communicated with the boiler 7, the boiler 7 and the steam channel are communicated with the steam turbine 1 through a middle port, the compressor 2 is provided with the steam channel which is communicated with the second boiler 8, the second boiler 8 is also provided with the steam channel which is communicated with the steam turbine 1, the steam turbine 1 is also provided with a low-pressure steam channel which is communicated with the evaporator 6 and then divided into two paths, namely, the first path is directly communicated with the compressor 2, and the second path is communicated with the condenser 5 through the second steam turbine 3; the condenser 5 is also communicated with the outside through a cooling medium channel, and the steam turbine 1 is connected with the compressor 2 and transmits power.
(2) In the flow, the external air is divided into two paths after flowing through the heat source heat regenerator 9 for heat absorption and temperature rise, wherein the first path directly enters the boiler 7 to participate in the combustion process, and the second path continuously absorbs heat and temperature rises after flowing through the boiler 7 and then enters the second boiler 8; the external low-grade fuel enters the boiler 7, the low-grade fuel and air are mixed in the boiler 7 and are combusted into primary section fuel gas with higher temperature, and the primary section fuel gas releases heat to air flowing through the primary section fuel gas and then enters the second boiler 8; external high-grade fuel enters a second boiler 8, the high-grade fuel is mixed with primary fuel gas and air from a boiler 7 and is combusted into high-temperature fuel gas, the high-temperature fuel gas releases heat to a circulating working medium flowing through the high-temperature fuel gas and is cooled, and then the high-temperature fuel gas flows through a heat source heat regenerator 9 to release heat, cool and discharge the high-temperature fuel gas to the outside; the condensate of the condenser 5 flows through the booster pump 4 to be boosted, flows through the evaporator 6 to absorb heat, be boosted and vaporized, flows through the boiler 7 to absorb heat, be boosted and then enters the steam turbine 1 through the middle steam inlet port to be decompressed and work; the steam discharged by the compressor 2 enters a second boiler 8 to absorb heat and raise the temperature, and the steam discharged by the second boiler 8 enters the steam turbine 1 to reduce the pressure and work; the low-pressure steam discharged by the steam turbine 1 passes through the evaporator 6 to release heat and cool, and then is divided into two paths, wherein the first path enters the compressor 2 to increase the pressure and the temperature, and the second path passes through the second steam turbine 3 to reduce the pressure and do work and then enters the condenser 5 to release heat and condense; the low-grade fuel and the high-grade fuel jointly provide driving heat load through a boiler 7 and a second boiler 8, and the cooling medium takes away low-temperature heat load through a condenser 5; the work output by the steam turbine 1 and the second steam turbine 3 is provided for the compressor 2 and the external actuating power, or the work output by the steam turbine 1 and the second steam turbine 3 is provided for the compressor 2, the booster pump 4 and the external actuating power, so that a dual-fuel combined cycle steam power device is formed.
The dual fuel combined cycle steam power plant shown in fig. 6 is implemented as follows:
(1) Structurally, the system mainly comprises a steam turbine, a compressor, a second steam turbine, a booster pump, a condenser, an evaporator, a boiler, a second boiler, a heat source heat regenerator and a third steam turbine; the external part is provided with a low-grade fuel channel communicated with the boiler 7, the external part is also provided with an air channel communicated with the heat source heat regenerator 9 and then divided into two paths, wherein the first path is communicated with the boiler 7, the second path is communicated with the second boiler 8 through the boiler 7, the boiler 7 is also provided with a primary section fuel gas channel communicated with the second boiler 8, the external part is also provided with a high-grade fuel channel communicated with the second boiler 8, and the second boiler 8 is also provided with a fuel gas channel communicated with the external part through the heat source heat regenerator 9; the condenser 5 has a condensate pipeline to connect with evaporator 6 through booster pump 4, then the evaporator 6 has steam channel to connect with third steam turbine 12 again, the third steam turbine 12 also has low-pressure steam channel to connect with evaporator 6, the compressor 2 has steam channel to connect with second boiler 8, the second boiler 8 also has steam channel to connect with steam turbine 1, the steam turbine 1 also has low-pressure steam channel to connect with evaporator 6, the evaporator 6 also has low-pressure steam channel to connect with compressor 2 directly and with condenser 5 through the second steam turbine 3 separately; the condenser 5 is also communicated with the outside through a cooling medium channel, and the steam turbine 1 is connected with the compressor 2 and transmits power.
(2) In the flow, the external air is divided into two paths after flowing through the heat source heat regenerator 9 for heat absorption and temperature rise, wherein the first path directly enters the boiler 7 to participate in the combustion process, and the second path continuously absorbs heat and temperature rises after flowing through the boiler 7 and then enters the second boiler 8; the external low-grade fuel enters the boiler 7, the low-grade fuel and air are mixed in the boiler 7 and are combusted into primary section fuel gas with higher temperature, and the primary section fuel gas releases heat to air flowing through the primary section fuel gas and then enters the second boiler 8; the external high-grade fuel enters a second boiler 8, the high-grade fuel is mixed with the primary section fuel gas and air from the boiler 7 and is combusted into high-temperature fuel gas, the high-temperature fuel gas releases heat to the circulating working medium flowing through the high-temperature fuel gas and is cooled, and then the high-temperature fuel gas flows through a heat source heat regenerator 9 to release heat and be cooled and is discharged outwards; the condensate of the condenser 5 flows through the booster pump 4 to be boosted, flows through the evaporator 6 to absorb heat, raise temperature, vaporize and overheat, flows through the third steam turbine 12 to be reduced in pressure and do work, and the low-pressure steam discharged by the third steam turbine 12 enters the evaporator 6; the steam discharged by the compressor 2 enters the second boiler 8 to absorb heat and raise temperature, the steam discharged by the second boiler 8 flows through the steam turbine 1 to reduce pressure and do work, and the low-pressure steam discharged by the steam turbine 1 enters the evaporator 6; the two paths of low-pressure steam entering the evaporator 6 are divided into two paths after releasing heat and reducing temperature, wherein the first path enters the compressor 2 to increase the pressure and the temperature, and the second path flows through the second steam turbine 3 to reduce the pressure and do work and then enters the condenser 5 to release heat and condense; the low-grade fuel and the high-grade fuel jointly provide driving heat load through a boiler 7 and a second boiler 8, and the cooling medium takes away low-temperature heat load through a condenser 5; the work output by the steam turbine 1, the second steam turbine 3 and the third steam turbine 12 is provided for the compressor 2 and external acting power, or the work output by the steam turbine 1, the second steam turbine 3 and the third steam turbine 12 is provided for the compressor 2, the booster pump 4 and external acting power, so that the dual-fuel combined cycle steam power device is formed.
The dual fuel combined cycle steam power plant shown in fig. 7 is implemented as follows:
(1) Structurally, the system mainly comprises a steam turbine, a compressor, a second steam turbine, a booster pump, a condenser, an evaporator, a boiler, a second boiler and a heat source heat regenerator; the external part is provided with a low-grade fuel channel communicated with the boiler 7, the external part is also provided with an air channel communicated with the heat source heat regenerator 9 and then divided into two paths, wherein the first path is communicated with the boiler 7, the second path is communicated with the second boiler 8 through the boiler 7, the boiler 7 is also provided with a primary section fuel gas channel communicated with the second boiler 8, the external part is also provided with a high-grade fuel channel communicated with the second boiler 8, and the second boiler 8 is also provided with a fuel gas channel communicated with the external part through the heat source heat regenerator 9; the condenser 5 has a condensate pipeline which is communicated with the evaporator 6 through the booster pump 4, then a steam channel of the evaporator 6 is communicated with a second boiler 8 through a boiler 7, a steam channel of the compressor 2 is communicated with the second boiler 8 through the boiler 7, the second boiler 8 is also communicated with the steam turbine 1, the steam turbine 1 is also divided into two paths after a low-pressure steam channel is communicated with the evaporator 6, wherein the first path is directly communicated with the compressor 2, and the second path is communicated with the condenser 5 through the second steam turbine 3; the condenser 5 is also communicated with the outside through a cooling medium channel, and the steam turbine 1 is connected with the compressor 2 and transmits power.
(2) In the flow, the external air is divided into two paths after flowing through the heat source heat regenerator 9 for heat absorption and temperature rise, wherein the first path directly enters the boiler 7 to participate in the combustion process, and the second path continuously absorbs heat and temperature rises after flowing through the boiler 7 and then enters the second boiler 8; the external low-grade fuel enters the boiler 7, the low-grade fuel and air are mixed in the boiler 7 and are combusted into primary section fuel gas with higher temperature, and the primary section fuel gas releases heat to air flowing through the primary section fuel gas and then enters the second boiler 8; the external high-grade fuel enters a second boiler 8, the high-grade fuel is mixed with the primary section fuel gas and air from the boiler 7 and is combusted into high-temperature fuel gas, the high-temperature fuel gas releases heat to the circulating working medium flowing through the high-temperature fuel gas and is cooled, and then the high-temperature fuel gas flows through a heat source heat regenerator 9 to release heat and be cooled and is discharged outwards; the condensate of the condenser 5 flows through the booster pump 4 to be boosted, flows through the evaporator 6 to absorb heat to be heated and is partially or completely vaporized, flows through the boiler 7 to continuously absorb heat, and then enters the second boiler 8 to absorb heat to be heated; the steam discharged by the compressor 2 flows through the boiler 7 to absorb heat and raise the temperature, and then enters the second boiler 8 to absorb heat and raise the temperature; the steam discharged by the second boiler 8 is decompressed and does work through the steam turbine 1, the low-pressure steam discharged by the steam turbine 1 is released heat and cooled through the evaporator 6, and then is divided into two paths, wherein the first path enters the compressor 2 to be boosted and heated, and the second path enters the condenser 5 to be released heat and condensed after being decompressed and done through the second steam turbine 3; the low-grade fuel and the high-grade fuel jointly provide driving heat load through a boiler 7 and a second boiler 8, and the cooling medium takes away low-temperature heat load through a condenser 5; the work output by the steam turbine 1 and the second steam turbine 3 is provided for the compressor 2 and the external actuating power, or the work output by the steam turbine 1 and the second steam turbine 3 is provided for the compressor 2, the booster pump 4 and the external actuating power, so that a dual-fuel combined cycle steam power device is formed.
The dual fuel combined cycle steam power plant shown in fig. 8 is implemented as follows:
(1) Structurally, in the dual fuel combined cycle steam power plant shown in fig. 1, the communication between the steam channel of the second boiler 8 and the steam turbine 1 is adjusted so that after the steam channel of the second boiler 8 is communicated with the steam turbine 1, the steam turbine 1 and the reheat steam channel are communicated with each other through the second boiler 8.
(2) In flow, compared to the dual fuel combined cycle steam power plant shown in fig. 1, the difference is that: the steam generated by the second boiler 8 enters the steam turbine 1 to reduce the pressure and do work to a certain degree, then enters the second boiler 8 to absorb heat and raise the temperature, then enters the steam turbine 1 to continue reducing the pressure and do work, and then is supplied to the evaporator 6 to form the dual-fuel combined cycle steam power device.
The dual fuel combined cycle steam power plant shown in fig. 9 is implemented as follows:
(1) Structurally, in the dual-fuel combined cycle steam power plant shown in fig. 1, a heat regenerator and a second booster pump are added, the condenser 5 is adjusted to be communicated with the booster pump 4 through a condensate pipeline, the condenser 5 is adjusted to be communicated with the heat regenerator 13 through the second booster pump 14, the compressor 2 is provided with a steam extraction channel to be communicated with the heat regenerator 13, and the heat regenerator 13 is communicated with the booster pump 4 through the condensate pipeline.
(2) In flow, compared to the dual fuel combined cycle steam power plant shown in fig. 1, the difference is that: the condensate discharged by the condenser 5 flows through the second booster pump 14 to be boosted and then enters the heat regenerator 13 to be mixed with the extracted steam from the compressor 2, absorb heat and raise temperature, and the extracted steam releases heat to form condensate; the condensate of the heat regenerator 13 is boosted by the booster pump 4, passes through the evaporator 6 to absorb heat, raise temperature, vaporize and overheat, then enters the second boiler 8 to absorb heat and raise temperature, and the steam discharged by the compressor 2 enters the second boiler 8 to absorb heat and raise temperature; the steam discharged by the second boiler 8 flows through the steam turbine 1 to reduce pressure and do work, the low-pressure steam discharged by the steam turbine 1 flows through the evaporator 6 to release heat and reduce temperature, and then the low-pressure steam is divided into two paths, wherein the first path enters the compressor 2 to increase pressure and temperature, and the second path flows through the second steam turbine 3 to reduce pressure and do work and then enters the condenser 5 to release heat and condense; the low-pressure steam entering the compressor 2 is subjected to pressure boosting and temperature rising to a certain degree and then divided into two paths, wherein the first path is provided for the heat regenerator 13, and the second path is subjected to pressure boosting and temperature rising continuously and then enters the second boiler 8 to form the dual-fuel combined cycle steam power device.
The dual fuel combined cycle steam power plant shown in fig. 10 is implemented as follows:
(1) Structurally, in the dual fuel combined cycle steam power plant shown in fig. 1, an expansion speed increaser 15 is added to replace the steam turbine 1, a dual energy compressor 16 is added to replace the compressor 2, and a diffuser pipe 17 is added to replace the booster pump 4.
(2) In flow, compared to the dual fuel combined cycle steam power plant shown in fig. 1, the difference is that: the condensate of the condenser 5 flows through the diffuser pipe 17 for speed reduction and pressure increase, flows through the evaporator 6 for heat absorption, temperature rise, vaporization and overheating, then enters the second boiler 8 for heat absorption and temperature rise, and the steam discharged by the dual-energy compressor 16 enters the second boiler 8 for heat absorption and temperature rise; the steam discharged by the second boiler 8 flows through the expansion speed increaser 15 to reduce the pressure, do work and increase the speed, the low-pressure steam discharged by the expansion speed increaser 15 flows through the evaporator 6 to release heat and reduce the temperature, and then is divided into two paths, wherein the first path enters the dual-energy compressor 16 to increase the pressure, raise the temperature and reduce the speed, and the second path flows through the second steam turbine 3 to reduce the pressure, do work, then enters the condenser 5 to release heat and condense; the low-grade fuel and the high-grade fuel jointly provide driving heat load through a boiler 7 and a second boiler 8, and the cooling medium takes away low-temperature heat load through a condenser 5; the work output from the second turbine 3 and the expansion gear-increaser 15 is provided to a dual-energy compressor 16 and external power to form a dual-fuel combined cycle steam power plant.
The dual fuel combined cycle steam power plant shown in fig. 11 is implemented as follows:
(1) Structurally, in the dual fuel combined cycle steam power plant shown in fig. 9, an expansion speed increaser 15 is added in place of the steam turbine 1, a dual energy compressor 16 is added in place of the compressor 2, a diffuser pipe 17 is added in place of the booster pump 4, and a second diffuser pipe 18 is added in place of the second booster pump 14.
(2) In flow, compared to the dual fuel combined cycle steam power plant shown in fig. 9, the difference is: the condensate discharged by the condenser 5 flows through a second diffuser pipe 18, is subjected to speed reduction and pressure increase, then enters a heat regenerator 13, is mixed with the extracted steam from a dual-energy compressor 16, absorbs heat and is heated, and the extracted steam releases heat to form condensate; the condensate of the heat regenerator 13 flows through the diffuser pipe 17 to reduce the speed and increase the pressure, flows through the evaporator 6 to absorb heat, raise the temperature, vaporize and overheat, then enters the second boiler 8 to absorb heat and raise the temperature, and the steam discharged by the dual-energy compressor 16 enters the second boiler 8 to absorb heat and raise the temperature; the steam discharged by the second boiler 8 flows through the expansion speed increaser 15 to reduce the pressure, do work and increase the speed, the low-pressure steam discharged by the expansion speed increaser 15 flows through the evaporator 6 to release heat and reduce the temperature, and then is divided into two paths, wherein the first path enters the dual-energy compressor 16 to increase the pressure, raise the temperature and reduce the speed, and the second path flows through the second steam turbine 3 to reduce the pressure, do work, then enters the condenser 5 to release heat and condense; the low-pressure steam entering the dual-energy compressor 16 is subjected to pressure rise, temperature rise and speed reduction to a certain degree and then divided into two paths, wherein the first path is provided for the heat regenerator 13, and the second path is subjected to pressure rise and temperature rise continuously and then enters the second boiler 8 to form the dual-fuel combined cycle steam power device.
The dual fuel combined cycle steam power plant shown in fig. 12 is implemented as follows:
(1) Structurally, in the dual fuel combined cycle steam power plant shown in fig. 1, an expansion speed increaser 15 is added in place of the second turbine 3, and a diffuser pipe 17 is added in place of the booster pump 4.
(2) In flow, compared to the dual fuel combined cycle steam power plant shown in fig. 1, the difference is that: the condensate of the condenser 5 flows through the diffuser pipe 17 to reduce the speed and increase the pressure, flows through the evaporator 6 to absorb heat, raise the temperature, vaporize and overheat, then enters the second boiler 8 to absorb heat and raise the temperature, and the steam discharged by the compressor 2 enters the second boiler 8 to absorb heat and raise the temperature; the steam discharged by the second boiler 8 is decompressed and does work through the steam turbine 1, the low-pressure steam discharged by the steam turbine 1 is released heat and cooled through the evaporator 6, and then is divided into two paths, wherein the first path enters the compressor 2 to be boosted and heated, and the second path enters the condenser 5 to be decompressed and done work and accelerated through the expansion speed increaser 15 to release heat and be condensed; the low-grade fuel and the high-grade fuel jointly provide driving heat load through a boiler 7 and a second boiler 8, cooling medium takes away low-temperature heat load through a condenser 5, work output by a steam turbine 1 and an expansion speed increaser 15 is provided for a compressor 2 and external acting power, and a dual-fuel combined cycle steam power device is formed.
The dual fuel combined cycle steam power plant shown in fig. 13 is implemented as follows:
(1) Structurally, in the dual-fuel combined cycle steam power plant shown in fig. 1, the external air channel is divided into two paths after being communicated with the heat source heat regenerator 9, wherein the first path is communicated with the boiler 7, the second path is communicated with the second boiler 8 through the boiler 7, and the external air channel is adjusted to be communicated with the boiler 7 through the heat source heat regenerator 9.
(2) The difference in flow from the dual fuel combined cycle steam power plant shown in fig. 1 is: the external air flows through the heat source heat regenerator 9 to absorb heat and raise temperature and then enters the boiler 7, and the external low-grade fuel enters the boiler 7; the low-grade fuel and the air are mixed and combusted in the boiler 7 into primary fuel gas which is high in temperature and rich in air, and then the primary fuel gas enters the second boiler 8 to form the dual-fuel combined cycle steam power device.
The effect that the technology of the invention can realize-the dual-fuel combined cycle steam power device provided by the invention has the following effects and advantages:
(1) Reasonable collocation, sectional construction and gradual temperature rise, and effectively reduces the irreversible loss of temperature difference in the process of forming a high-temperature heat source.
(2) The low-grade fuel combines with the high-grade fuel to provide a high-temperature heat source for the combined cycle, the low-grade fuel exerts the effect of the high-grade fuel, and the utilization rate of the mechanical energy converted from the low-grade fuel is greatly improved.
(3) The irreversible loss of the temperature difference in the combustion process of the high-grade fuel is reduced, and the heat power conversion efficiency of the high-grade fuel is improved.
(4) When the low-grade fuel is used in a subsection mode, the grade of high-temperature fuel gas is obviously improved, and the utilization value of the low-grade fuel is improved.
(5) The utilization value of the fuel is improved, the emission of greenhouse gases and pollutants is reduced, and the energy-saving and emission-reducing benefits are remarkable.
(6) The structure is simple, and the flow is reasonable; the fuel selection range and the use value are improved, and the energy consumption cost of the device is reduced.
(7) The technical scheme is beneficial to reducing the manufacturing cost of the device and expanding the technical application range.
Claims (20)
1. The double-fuel combined cycle steam power device mainly comprises a steam turbine, a compressor, a second steam turbine, a booster pump, a condenser, an evaporator, a boiler, a second boiler and a heat source heat regenerator; the external part is provided with a low-grade fuel channel communicated with a boiler (7), the external part is also provided with an air channel which is communicated with a heat source heat regenerator (9) and then divided into two paths, namely a first path is communicated with the boiler (7), a second path is communicated with a second boiler (8) through the boiler (7), the boiler (7) is also provided with a primary section fuel gas channel communicated with the second boiler (8), the external part is also provided with a high-grade fuel channel communicated with the second boiler (8), and the second boiler (8) is also provided with a fuel gas channel communicated with the external part through the heat source heat regenerator (9); the condenser (5) is provided with a condensate pipeline, the condensate pipeline is communicated with the evaporator (6) through the booster pump (4), then a steam channel of the evaporator (6) is communicated with the second boiler (8), the compressor (2) is provided with a steam channel which is communicated with the second boiler (8), the second boiler (8) is also provided with a steam channel which is communicated with the steam turbine (1), the steam turbine (1) is also provided with a low-pressure steam channel which is communicated with the evaporator (6) and then divided into two paths, namely, the first path is directly communicated with the compressor (2) and the second path is communicated with the condenser (5) through the second steam turbine (3); the condenser (5) is also provided with a cooling medium channel which is communicated with the outside, and the steam turbine (1) is connected with the compressor (2) and transmits power to form a dual-fuel combined cycle steam power device; wherein, or the turbine (1) is connected with the compressor (2) and the booster pump (4) and transmits power.
2. The dual-fuel combined cycle steam power device mainly comprises a steam turbine, a compressor, a second steam turbine, a booster pump, a condenser, an evaporator, a boiler, a second boiler, a heat source heat regenerator and a high-temperature heat regenerator; the external part is provided with a low-grade fuel channel communicated with a boiler (7), the external part is also provided with an air channel which is communicated with a heat source heat regenerator (9) and then divided into two paths, namely a first path is communicated with the boiler (7), a second path is communicated with a second boiler (8) through the boiler (7), the boiler (7) is also provided with a primary section fuel gas channel communicated with the second boiler (8), the external part is also provided with a high-grade fuel channel communicated with the second boiler (8), and the second boiler (8) is also provided with a fuel gas channel communicated with the external part through the heat source heat regenerator (9); the condenser (5) is provided with a condensate pipeline, the condensate pipeline is communicated with the evaporator (6) through a booster pump (4), then a steam channel of the evaporator (6) is communicated with a second boiler (8) through a high-temperature heat regenerator (10), a steam channel of the compressor (2) is communicated with the second boiler (8) through the high-temperature heat regenerator (10), the second boiler (8) is also provided with a steam channel communicated with a steam turbine (1), the steam turbine (1) is also provided with a low-pressure steam channel which is communicated with the evaporator (6) through the high-temperature heat regenerator (10) and then divided into two paths, namely, the first path is directly communicated with the compressor (2), and the second path is communicated with the condenser (5) through the second steam turbine (3); the condenser (5) is also provided with a cooling medium channel which is communicated with the outside, and the steam turbine (1) is connected with the compressor (2) and transmits power to form a dual-fuel combined cycle steam power device; wherein, or the turbine (1) is connected with the compressor (2) and the booster pump (4) and transmits power.
3. The double-fuel combined cycle steam power device mainly comprises a steam turbine, a compressor, a second steam turbine, a booster pump, a condenser, an evaporator, a boiler, a second boiler, a heat source heat regenerator and a high-temperature heat regenerator; the external part is provided with a low-grade fuel channel communicated with a boiler (7), the external part is also provided with an air channel which is communicated with a heat source heat regenerator (9) and then divided into two paths, namely a first path is communicated with the boiler (7), a second path is communicated with a second boiler (8) through the boiler (7), the boiler (7) is also provided with a primary section fuel gas channel communicated with the second boiler (8), the external part is also provided with a high-grade fuel channel communicated with the second boiler (8), and the second boiler (8) is also provided with a fuel gas channel communicated with the external part through the heat source heat regenerator (9); the condenser (5) is provided with a condensate pipeline which is communicated with the evaporator (6) through a booster pump (4), then a steam channel of the evaporator (6) is communicated with a second boiler (8) through a high-temperature heat regenerator (10), a steam channel of the compressor (2) is communicated with the second boiler (8) through the high-temperature heat regenerator (10), the second boiler (8) is also provided with a steam channel which is communicated with a steam turbine (1), then the steam channel of the steam turbine (1) is communicated with the steam turbine through the high-temperature heat regenerator (10), the steam turbine (1) is also provided with a low-pressure steam channel which is communicated with the evaporator (6) and then divided into two paths, namely, the first path is directly communicated with the compressor (2), and the second path is communicated with the condenser (5) through the second steam turbine (3); the condenser (5) is also provided with a cooling medium channel which is communicated with the outside, and the steam turbine (1) is connected with the compressor (2) and transmits power to form a dual-fuel combined cycle steam power device; wherein, or the turbine (1) is connected with the compressor (2) and the booster pump (4) and transmits power.
4. The double-fuel combined cycle steam power device mainly comprises a steam turbine, a compressor, a second steam turbine, a booster pump, a condenser, a boiler, a second boiler, a heat source heat regenerator and a heat supplier; the external part is provided with a low-grade fuel channel communicated with a boiler (7), the external part is also provided with an air channel which is communicated with a heat source heat regenerator (9) and then divided into two paths, namely a first path is communicated with the boiler (7), a second path is communicated with a second boiler (8) through the boiler (7), the boiler (7) is also provided with a primary section fuel gas channel communicated with the second boiler (8), the external part is also provided with a high-grade fuel channel communicated with the second boiler (8), and the second boiler (8) is also provided with a fuel gas channel communicated with the external part through the heat source heat regenerator (9); the condenser (5) is provided with a condensate pipeline, a boiler (7) is communicated with a second boiler (8) through a steam channel after the condensate pipeline is communicated with the boiler (7) through a booster pump (4), the compressor (2) is provided with a steam channel communicated with the second boiler (8), the second boiler (8) is also provided with a steam channel communicated with the steam turbine (1), the steam turbine (1) is also provided with a low-pressure steam channel communicated with a heater (11) and then divided into two paths, namely a first path is directly communicated with the compressor (2) and a second path is communicated with the condenser (5) through the second steam turbine (3); the condenser (5) is also provided with a cooling medium channel communicated with the outside, the heat supply device (11) is also provided with a heated medium channel communicated with the outside, and the steam turbine (1) is connected with the compressor (2) and transmits power to form a dual-fuel combined cycle steam power device; wherein, or the turbine (1) is connected with the compressor (2) and the booster pump (4) and transmits power.
5. The double-fuel combined cycle steam power device mainly comprises a steam turbine, a compressor, a second steam turbine, a booster pump, a condenser, an evaporator, a boiler, a second boiler and a heat source heat regenerator; the external part is provided with a low-grade fuel channel communicated with a boiler (7), the external part is also provided with an air channel which is communicated with a heat source heat regenerator (9) and then divided into two paths, namely a first path is communicated with the boiler (7), a second path is communicated with a second boiler (8) through the boiler (7), the boiler (7) is also provided with a primary section fuel gas channel communicated with the second boiler (8), the external part is also provided with a high-grade fuel channel communicated with the second boiler (8), and the second boiler (8) is also provided with a fuel gas channel communicated with the external part through the heat source heat regenerator (9); the condenser (5) is provided with a condensate pipeline, the condensate pipeline is communicated with the evaporator (6) through the booster pump (4), then the evaporator (6) is further provided with a steam channel to be communicated with the boiler (7), the boiler (7) is also provided with a steam channel to be communicated with the steam turbine (1) through a middle port, the compressor (2) is provided with a steam channel to be communicated with the second boiler (8), the second boiler (8) is also provided with a steam channel to be communicated with the steam turbine (1), the steam turbine (1) is also provided with a low-pressure steam channel to be communicated with the evaporator (6) and then divided into two paths, namely, the first path is directly communicated with the compressor (2), and the second path is communicated with the condenser (5) through the second steam turbine (3); the condenser (5) is also provided with a cooling medium channel which is communicated with the outside, and the steam turbine (1) is connected with the compressor (2) and transmits power to form a dual-fuel combined cycle steam power device; wherein, or the turbine (1) is connected with the compressor (2) and the booster pump (4) and transmits power.
6. The dual-fuel combined cycle steam power device mainly comprises a steam turbine, a compressor, a second steam turbine, a booster pump, a condenser, an evaporator, a boiler, a second boiler, a heat source regenerator and a third steam turbine; the external part is provided with a low-grade fuel channel communicated with a boiler (7), the external part is also provided with an air channel which is communicated with a heat source heat regenerator (9) and then divided into two paths, namely a first path is communicated with the boiler (7), a second path is communicated with a second boiler (8) through the boiler (7), the boiler (7) is also provided with a primary section fuel gas channel communicated with the second boiler (8), the external part is also provided with a high-grade fuel channel communicated with the second boiler (8), and the second boiler (8) is also provided with a fuel gas channel communicated with the external part through the heat source heat regenerator (9); the condenser (5) is provided with a condensate pipeline, the evaporator (6) is communicated with the third steam turbine (12) through a booster pump (4), the third steam turbine (12) is also provided with a low-pressure steam channel to be communicated with the evaporator (6), the compressor (2) is provided with a steam channel to be communicated with the second boiler (8), the second boiler (8) is also provided with a steam channel to be communicated with the steam turbine (1), the steam turbine (1) is also provided with a low-pressure steam channel to be communicated with the evaporator (6), and the evaporator (6) and the low-pressure steam channel are respectively and directly communicated with the compressor (2) and communicated with the condenser (5) through the second steam turbine (3); the condenser (5) is also provided with a cooling medium channel which is communicated with the outside, and the steam turbine (1) is connected with the compressor (2) and transmits power to form a dual-fuel combined cycle steam power device; wherein, or the turbine (1) is connected with the compressor (2) and the booster pump (4) and transmits power.
7. The dual-fuel combined cycle steam power plant mainly comprises a steam turbine, a compressor, a second steam turbine, a booster pump, a condenser, an evaporator, a boiler, a second boiler and a heat source heat regenerator; the external part is provided with a low-grade fuel channel communicated with a boiler (7), the external part is also provided with an air channel which is communicated with a heat source heat regenerator (9) and then divided into two paths, namely a first path is communicated with the boiler (7), a second path is communicated with a second boiler (8) through the boiler (7), the boiler (7) is also provided with a primary section fuel gas channel communicated with the second boiler (8), the external part is also provided with a high-grade fuel channel communicated with the second boiler (8), and the second boiler (8) is also provided with a fuel gas channel communicated with the external part through the heat source heat regenerator (9); the condenser (5) is provided with a condensate pipeline, the condensate pipeline is communicated with the evaporator (6) through the booster pump (4), then the evaporator (6) is provided with a steam channel which is communicated with the second boiler (8) through the boiler (7), the compressor (2) is provided with a steam channel which is communicated with the second boiler (8) through the boiler (7), the second boiler (8) is also provided with a steam channel which is communicated with the steam turbine (1), the steam turbine (1) is also provided with a low-pressure steam channel which is communicated with the evaporator (6) and then divided into two paths, namely, the first path is directly communicated with the compressor (2) and the second path is communicated with the condenser (5) through the second steam turbine (3); the condenser (5) is also provided with a cooling medium channel which is communicated with the outside, and the steam turbine (1) is connected with the compressor (2) and transmits power to form a dual-fuel combined cycle steam power device; wherein, or the turbine (1) is connected with the compressor (2) and the booster pump (4) and transmits power.
8. The dual-fuel combined cycle steam power device mainly comprises a steam turbine, a compressor, a second steam turbine, a booster pump, a condenser, an evaporator, a boiler, a second boiler, a heat source heat regenerator and a high-temperature heat regenerator; the external part is provided with a low-grade fuel channel communicated with a boiler (7), the external part is also provided with an air channel which is communicated with a heat source heat regenerator (9) and then divided into two paths, namely a first path is communicated with the boiler (7), a second path is communicated with a second boiler (8) through the boiler (7), the boiler (7) is also provided with a primary section fuel gas channel communicated with the second boiler (8), the external part is also provided with a high-grade fuel channel communicated with the second boiler (8), and the second boiler (8) is also provided with a fuel gas channel communicated with the external part through the heat source heat regenerator (9); the condenser (5) is provided with a condensate pipeline which is communicated with the evaporator (6) through a booster pump (4), then a steam channel of the evaporator (6) is communicated with a second boiler (8) through a high-temperature heat regenerator (10) and a boiler (7), a steam channel of the compressor (2) is communicated with the second boiler (8) through the high-temperature heat regenerator (10) and the boiler (7), the second boiler (8) is also provided with a steam channel which is communicated with the steam turbine (1), the steam turbine (1) is also provided with a low-pressure steam channel which is communicated with the evaporator (6) through the high-temperature heat regenerator (10) and then divided into two paths, namely, the first path is directly communicated with the compressor (2), and the second path is communicated with the condenser (5) through the second steam turbine (3); the condenser (5) is also provided with a cooling medium channel which is communicated with the outside, and the steam turbine (1) is connected with the compressor (2) and transmits power to form a dual-fuel combined cycle steam power device; wherein, or the turbine (1) is connected with the compressor (2) and the booster pump (4) and transmits power.
9. The double-fuel combined cycle steam power device mainly comprises a steam turbine, a compressor, a second steam turbine, a booster pump, a condenser, an evaporator, a boiler, a second boiler, a heat source heat regenerator and a high-temperature heat regenerator; the external part is provided with a low-grade fuel channel communicated with a boiler (7), the external part is also provided with an air channel which is communicated with a heat source regenerator (9) and then divided into two paths, namely a first path is communicated with the boiler (7), a second path is communicated with a second boiler (8) through the boiler (7), the boiler (7) is also provided with a primary section fuel gas channel communicated with the second boiler (8), the external part is also provided with a high-grade fuel channel communicated with the second boiler (8), and the second boiler (8) is also provided with a fuel gas channel communicated with the external part through the heat source regenerator (9); the condenser (5) is provided with a condensate pipeline which is communicated with the evaporator (6) through a booster pump (4), then a steam channel of the evaporator (6) is communicated with a second boiler (8) through a high-temperature heat regenerator (10) and a boiler (7), the compressor (2) is provided with a steam channel which is communicated with the second boiler (8) through the high-temperature heat regenerator (10) and the boiler (7), the second boiler (8) is also provided with a steam channel which is communicated with the steam turbine (1), then the steam channel of the steam turbine (1) is communicated with the compressor (1) through the high-temperature heat regenerator (10), and the steam turbine (1) is also provided with a low-pressure steam channel which is communicated with the evaporator (6) and then divided into two paths, namely a first path is directly communicated with the compressor (2) and a second path is communicated with the condenser (5) through the second steam turbine (3); the condenser (5) is also provided with a cooling medium channel which is communicated with the outside, and the steam turbine (1) is connected with the compressor (2) and transmits power to form a dual-fuel combined cycle steam power device; wherein, or the turbine (1) is connected with the compressor (2) and the booster pump (4) and transmits power.
10. The double-fuel combined cycle steam power device mainly comprises a steam turbine, a compressor, a second steam turbine, a booster pump, a condenser, a boiler, a second boiler, a heat source heat regenerator and a heat supplier; the external part is provided with a low-grade fuel channel communicated with a boiler (7), the external part is also provided with an air channel which is communicated with a heat source heat regenerator (9) and then divided into two paths, namely a first path is communicated with the boiler (7), a second path is communicated with a second boiler (8) through the boiler (7), the boiler (7) is also provided with a primary section fuel gas channel communicated with the second boiler (8), the external part is also provided with a high-grade fuel channel communicated with the second boiler (8), and the second boiler (8) is also provided with a fuel gas channel communicated with the external part through the heat source heat regenerator (9); the condenser (5) is provided with a condensate pipeline, a boiler (7) is communicated with a second boiler (8) through a booster pump (4), the boiler (7) is further provided with a steam channel, the compressor (2) is provided with a steam channel, the boiler (7) is communicated with the second boiler (8), the second boiler (8) is further provided with a steam channel, the steam channel is communicated with the steam turbine (1), the steam turbine (1) is further provided with a low-pressure steam channel, the low-pressure steam channel is communicated with a heat supply device (11) and then divided into two paths, namely, the first path is directly communicated with the compressor (2), and the second path is communicated with the condenser (5) through the second steam turbine (3); the condenser (5) is also provided with a cooling medium channel communicated with the outside, the heat supply device (11) is also provided with a heated medium channel communicated with the outside, and the steam turbine (1) is connected with the compressor (2) and transmits power to form a dual-fuel combined cycle steam power device; wherein, or the turbine (1) is connected with the compressor (2) and the booster pump (4) and transmits power.
11. The double-fuel combined cycle steam power device mainly comprises a steam turbine, a compressor, a second steam turbine, a booster pump, a condenser, an evaporator, a boiler, a second boiler and a heat source heat regenerator; the external part is provided with a low-grade fuel channel communicated with a boiler (7), the external part is also provided with an air channel which is communicated with a heat source heat regenerator (9) and then divided into two paths, namely a first path is communicated with the boiler (7), a second path is communicated with a second boiler (8) through the boiler (7), the boiler (7) is also provided with a primary section fuel gas channel communicated with the second boiler (8), the external part is also provided with a high-grade fuel channel communicated with the second boiler (8), and the second boiler (8) is also provided with a fuel gas channel communicated with the external part through the heat source heat regenerator (9); the condenser (5) is provided with a condensate pipeline, the condensate pipeline is communicated with the evaporator (6) through the booster pump (4), then a steam channel of the evaporator (6) is communicated with the boiler (7), the boiler (7) is also provided with a steam channel which is communicated with the steam turbine (1) through a middle port, the compressor (2) is provided with a steam channel which is communicated with a second boiler (8) through the boiler (7), the second boiler (8) is also provided with a steam channel which is communicated with the steam turbine (1), the steam turbine (1) is also provided with a low-pressure steam channel which is communicated with the evaporator (6) and then divided into two paths, namely, the first path is directly communicated with the compressor (2), and the second path is communicated with the condenser (5) through the second steam turbine (3); the condenser (5) is also provided with a cooling medium channel which is communicated with the outside, and the steam turbine (1) is connected with the compressor (2) and transmits power to form a dual-fuel combined cycle steam power device; wherein, or the turbine (1) is connected with the compressor (2) and the booster pump (4) and transmits power.
12. The dual-fuel combined cycle steam power device mainly comprises a steam turbine, a compressor, a second steam turbine, a booster pump, a condenser, an evaporator, a boiler, a second boiler, a heat source regenerator and a third steam turbine; the external part is provided with a low-grade fuel channel communicated with a boiler (7), the external part is also provided with an air channel which is communicated with a heat source heat regenerator (9) and then divided into two paths, namely a first path is communicated with the boiler (7), a second path is communicated with a second boiler (8) through the boiler (7), the boiler (7) is also provided with a primary section fuel gas channel communicated with the second boiler (8), the external part is also provided with a high-grade fuel channel communicated with the second boiler (8), and the second boiler (8) is also provided with a fuel gas channel communicated with the external part through the heat source heat regenerator (9); the condenser (5) is provided with a condensate pipeline, the condensate pipeline is communicated with the evaporator (6) through a booster pump (4), then a steam channel of the evaporator (6) is communicated with a third steam turbine (12), the third steam turbine (12) is also provided with a low-pressure steam channel which is communicated with the evaporator (6), the compressor (2) is provided with a steam channel which is communicated with a second boiler (8) through a boiler (7), the second boiler (8) is also provided with a steam channel which is communicated with the steam turbine (1), the steam turbine (1) is also provided with a low-pressure steam channel which is communicated with the evaporator (6), and the evaporator (6) is also provided with a low-pressure steam channel which is respectively communicated with the compressor (2) directly and the condenser (5) through the second steam turbine (3); the condenser (5) is also provided with a cooling medium channel which is communicated with the outside, and the steam turbine (1) is connected with the compressor (2) and transmits power to form a dual-fuel combined cycle steam power device; wherein, or the turbine (1) is connected with the compressor (2) and the booster pump (4) and transmits power.
13. A dual-fuel combined cycle steam power device is characterized in that in any one of the dual-fuel combined cycle steam power devices of claims 1-12, a second boiler (8) is provided with a steam passage to be communicated with a steam turbine (1) and adjusted to be communicated with the steam turbine (1) after the second boiler (8) is provided with the steam passage to be communicated with the steam turbine (1), and then the steam turbine (1) and a reheat steam passage are communicated with the steam turbine (1) through a boiler (7) to form the dual-fuel combined cycle steam power device.
14. A dual-fuel combined cycle steam power device is characterized in that in any one of the dual-fuel combined cycle steam power devices of claims 1-12, a second boiler (8) is provided with a steam passage to be communicated with a steam turbine (1) and is adjusted to be communicated with the steam turbine (1) after the second boiler (8) is provided with the steam passage to be communicated with the steam turbine (1), and then the steam turbine (1) and a reheat steam passage are communicated with the steam turbine (1) through the second boiler (8) to form the dual-fuel combined cycle steam power device.
15. A dual-fuel combined cycle steam power device is characterized in that in any one of the dual-fuel combined cycle steam power devices of claims 1-12, a second boiler (8) is provided with a steam passage to be communicated with a steam turbine (1) and adjusted to be communicated with the steam turbine (1) after the second boiler (8) is provided with the steam passage to be communicated with the steam turbine (1), and then the steam turbine (1) is also provided with a reheat steam passage to be communicated with the dual-fuel combined cycle steam power device through a boiler (7) and the second boiler (8) to form the dual-fuel combined cycle steam power device.
16. A dual-fuel combined cycle steam power device is characterized in that a heat regenerator and a second booster pump are added in any one of the dual-fuel combined cycle steam power devices of claims 1 to 15, a condenser (5) is provided with a condensate liquid pipeline which is communicated with the booster pump (4) and adjusted to be that the condenser (5) is provided with a condensate liquid pipeline which is communicated with the heat regenerator (13) through the second booster pump (14), a steam extraction channel is arranged on a compressor (2) and is communicated with the heat regenerator (13), and the heat regenerator (13) is further provided with a condensate liquid pipeline which is communicated with the booster pump (4), so that the dual-fuel combined cycle steam power device is formed.
17. A dual-fuel combined cycle steam power device is characterized in that in any one of the dual-fuel combined cycle steam power devices in claims 1-15, an expansion speed increaser (15) is added to replace a steam turbine (1), a dual-energy compressor (16) is added to replace a compressor (2), a diffuser pipe (17) is added to replace a booster pump (4), and the dual-fuel combined cycle steam power device is formed.
18. A dual-fuel combined cycle steam power device is characterized in that in any one of the dual-fuel combined cycle steam power devices in claim 16, an expansion speed increaser (15) is added to replace a steam turbine (1), a dual-energy compressor (16) is added to replace a compressor (2), a diffuser pipe (17) is added to replace a booster pump (4), and a second diffuser pipe (18) is added to replace a second booster pump (14), so that the dual-fuel combined cycle steam power device is formed.
19. A dual-fuel combined cycle steam power device is characterized in that in any one of the dual-fuel combined cycle steam power devices disclosed in claims 1-15, an expansion speed increaser (15) is added to replace a second turbine (3), and a diffuser pipe (17) is added to replace a booster pump (4) to form the dual-fuel combined cycle steam power device.
20. A dual-fuel combined cycle steam power device is characterized in that in any one of the dual-fuel combined cycle steam power devices disclosed in claims 1-19, an external air channel is communicated with a heat source heat regenerator (9) and then divided into two paths, wherein the first path is communicated with a boiler (7), the second path is communicated with a second boiler (8) through the boiler (7), and the external air channel is adjusted to be communicated with the boiler (7) through the heat source heat regenerator (9) to form the dual-fuel combined cycle steam power device.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2021100454254 | 2021-01-03 | ||
| CN202110045425 | 2021-01-03 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115217554A true CN115217554A (en) | 2022-10-21 |
Family
ID=83606043
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111683553.8A Pending CN115217554A (en) | 2021-01-03 | 2021-12-31 | Dual-fuel combined cycle steam power plant |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115217554A (en) |
-
2021
- 2021-12-31 CN CN202111683553.8A patent/CN115217554A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN113217125A (en) | Hydrogen fuel combined cycle power plant | |
| CN115217554A (en) | Dual-fuel combined cycle steam power plant | |
| CN115217552A (en) | Dual-fuel combined cycle steam power plant | |
| CN115217553A (en) | Dual-fuel combined cycle steam power device | |
| CN115199363A (en) | Dual-fuel combined cycle steam power device | |
| WO2022141610A1 (en) | Dual-fuel combined circulating steam power device | |
| WO2022152006A1 (en) | Dual-fuel gas-steam combined cycle power apparatus | |
| WO2022141611A1 (en) | Dual-fuel combined cycle steam power device | |
| CN115217556A (en) | Dual-fuel combined cycle steam power device | |
| WO2022156521A1 (en) | Dual-fuel combined cycle power plant | |
| CN115217548A (en) | Double-fuel steam power device | |
| CN114810245A (en) | Dual-fuel combined cycle steam power device | |
| WO2022161114A1 (en) | Dual-fuel high-temperature heat source and dual-fuel power apparatus | |
| CN114909194A (en) | Dual-fuel combined cycle steam power device | |
| CN115263470A (en) | Dual-fuel gas-steam combined cycle power device | |
| CN115217557A (en) | Dual-fuel combined cycle steam power device | |
| CN115217562A (en) | Dual-fuel gas-steam combined cycle power device | |
| WO2022156523A1 (en) | Dual-fuel gas-steam combined cycle power device | |
| CN115217547A (en) | Double-fuel steam power device | |
| CN114811574A (en) | Dual-fuel high-temperature heat source and dual-fuel steam power device | |
| WO2022206087A1 (en) | Dual-fuel combined-cycle power device | |
| WO2022148329A1 (en) | Dual-fuel gas-steam combined cycle power equipment | |
| CN115434773A (en) | Double-heat source combined cycle steam power device | |
| CN115263463A (en) | Dual-fuel combined cycle power plant | |
| CN115263464A (en) | Dual-fuel combined cycle power plant |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |