CN102191957A - Combined cycle and combined heat and power (CHP) equipment and process - Google Patents
Combined cycle and combined heat and power (CHP) equipment and process Download PDFInfo
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- CN102191957A CN102191957A CN2011101128070A CN201110112807A CN102191957A CN 102191957 A CN102191957 A CN 102191957A CN 2011101128070 A CN2011101128070 A CN 2011101128070A CN 201110112807 A CN201110112807 A CN 201110112807A CN 102191957 A CN102191957 A CN 102191957A
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- 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
- Y02E20/14—Combined heat and power generation [CHP]
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- 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]
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- 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]
- Y02E20/18—Integrated gasification combined cycle [IGCC], e.g. combined with carbon capture and storage [CCS]
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Abstract
The invention discloses a combined cycle and combined heat and power (CHP) equipment and process. The equipment is provided with a plurality of branch systems comprising gas turbines and waste heat boilers, wherein the waste heat boilers utilize high-temperature flue gas exhausted by the corresponding gas turbines as heat exchange heat sources so as to provide required steam for steam turbines and heat users; and at least one of the branch systems is an adjustable branch system which can adjust and distribute the flow of the waste heat boilers therein, which enters the steam turbines and heat supply pipe networks, so that the generated heat and power can meet the practical heat and power demands. By using coke oven gas as the fuel, the invention realizes good heat energy matching with the chemical production process and the like, and has the advantages of more reasonable energy level matching, high overall efficiency and flexible heat and power load adjustment.
Description
Technical field
The present invention relates to the cogeneration of heat and power field of energy-saving technology based on carbonization of coal, relating in particular to a kind of is the combined cycle cogeneration equipment and the technology of fuel with the coke-stove gas.
Background technique
At present, technology related to the present invention mainly comprises combined-cycle technology and cogeneration of heat and power technology (CHP).The state of development and the system features of technology is as follows separately for it:
Combined cycle is exactly that the brayton cycle of gas turbine (Brayton Cycle) is combined with the Rankine cycle (Rankine Cycle) of steam turbine, the novel thermodynamic cycle of composition, and the supply system of formation energy cascade utilization reaches the higher thermal efficiency.
The thermodynamic cycle that combined cycle is got up as a kind of RECENT DEVELOPMENTS, have a variety of arrangements: (1) steam injection (STIG) circulation: the high-temperature exhaust air of this recycling gas turbine produces steam, annotate the firing chamber, generate high-temperature fuel gas-vapor mixing working medium, enter the turbine expansion acting then; (2) humid air turbine (HAT) circulation: waste heat in the HAT cyclic utilization system and used heat produce hot water, and reusable heat water temperature means increase the turbine working medium flow, have relatively reduced working medium compression wasted work, and adopt the form recovery gas turbine heat extraction of backheat; (3) pressurized fluidized bed combined cycle (PFBC): the difference of PFBC and conventional coal burning system is that the boiler island with PFBC replaces normal stove, owing to adopt the boiler supercharging, the body of heater volume is less, so its combustion efficiency is higher; (4) integrated gasification combined cycle plants (IGCC): IGCC is made up of systems such as coal gasifier, purification plant (dedusting, desulfurization), Gas Turbine Generating Units, exhaust heat boiler and steam turbine generator set, be heat supply, power, give gas and supply chemical product multi-joint for system.
Combined cycle is applied to industrial generation since the 1950's, at present, combined cycle has become the main developing direction of thermoelectricity and relevant electricity consumption industry.Conventional combined cycle, owing to adopt the single pattern (gas turbine, an exhaust heat boiler, a steam turbine) of structure, adopting the high-quality rock gas usually is fuel, can reach higher generating efficiency, yet, aspect heat supply, do not reach the demand of flexible adjustment.
Cogeneration of heat and power (CHP) not only electrogenesis but also heat supply are the power-saving technologies that generally acknowledge countries in the world.Since 20 beginnings of the century, various countries develop in succession, particularly develop comparatively fast in developed countries such as the former Soviet Union, Denmark, Sweden, Holland, the U.S., Japan.
The cogeneration of heat and power technology has multiple arrangement, the selection of fuel and application also have bigger flexibility, the major advantage of conventional cogeneration of heat and power technology is embodied in: (1) steam is not in step-down or heat supply behind pressure and temperature reducing, but generating earlier, with drawing gas or steam discharge satisfies the needs of heat supply, refrigeration, can improve energy utilization rate then; (2) increase back pressure unit load rate, increase unit generation, reduce the condensation loss, reduce coal consumption; (3), realized the cascade utilization of heat energy preferably according to the grade energy supply of heat energy.
Common cogeneration of heat and power is adopted sucking condensing type or back pressure type based on steam turbine, and its available temperature range is limited, makes its energy consumption efficiency not high, and the potentiality that efficient improves are also little, and power supply simultaneously also is restricted with the flexibility of heat supply.
Summary of the invention
The technical problem that the present invention solves is: providing a kind of is the combined cycle cogeneration equipment and the technology of fuel with the coke-stove gas, to improve or to overcome one or multinomial defective of prior art.
Technical solution of the present invention is: a kind of combined cycle cogeneration equipment, it is provided with a plurality of branch systems that comprise gas turbine and exhaust heat boiler, the high-temperature flue gas that described exhaust heat boiler utilizes corresponding gas turbine to discharge is the heat exchange thermal source, to provide required steam to steam turbine and hot user, wherein, have at least one to be adjustable branch system in the described branch system, regulate and distribute with the flow that wherein exhaust heat boiler is entered steam turbine, heating network, so that the heat of output, electricity are coordinated mutually with actual heat, electric demand.
The present invention also proposes a kind of combined cycle cogeneration technology, it comprises a plurality of branch's flow processs of utilizing gas turbine and exhaust heat boiler, the high-temperature flue gas that described exhaust heat boiler utilizes corresponding gas turbine to discharge is the heat exchange thermal source, to provide required steam to steam turbine and hot user, wherein, have at least one to be adjustable branch flow process in the described branch flow process, regulate and distribute with the flow that wherein exhaust heat boiler is entered steam turbine, heating network, so that the heat of output, electricity are coordinated mutually with actual heat, electric demand.
Preferably, described gas turbine comprises the firing chamber of air after air pressure mechanism of qi, coke-stove gas and the compression and the combustion gas turbine that burning back flue gas does work, the main shaft of combustion gas turbine is connected the conversion that realizes mechanical energy and electric energy with the electric organ main shaft, the output electric energy, the high-temperature flue gas of combustion gas turbine outlet simultaneously enters exhaust heat boiler, the high-temperature steam that produces in each exhaust heat boiler is selected to be used to promote the steam turbine acting or to supply with hot user's heat, steam turbine links to each other with generator and exports electric energy, and the delivery of steam of steam turbine outlet is simultaneously given hot user's heat.
Preferably, the exhaust heat boiler of described adjustable branch system is two pressure exhaust heat boilers, and the high pressure vapour of this pair pressure exhaust heat boiler is supplied with steam turbine, and low pressure vapour is directly supplied with hot user.
Characteristics of the present invention and advantage are: the invention provides a kind of is the Combined-cycle Cogeneration Systems of fuel with the coke-stove gas, and this system comprises: adopt one of coal tar product---coke-stove gas, through after the purified treatment as the fuel of gas turbine; The exhaust of higher temperature gas turbine enters exhaust heat boiler, with the waste heat heated feed water, provides process steam; Behind exhaust heat boiler, arrange the suitable steam turbine system of power; The steam that in exhaust heat boiler, produces, a part is production technology heat supplies such as chemical industry, another part provides acting steam for steam turbine; Steam in steam turbine after the acting continues as the production technology heat supply.The Combined-cycle Cogeneration Systems that acts as a fuel with coke-stove gas of the present invention, not only realized good heat energy coupling with production process such as chemical industry, and the co-generation unit that is adopted is compared with traditional combined cycle and co-generation unit, the energy level coupling is more reasonable, the whole efficiency height, thermoelectric Load Regulation is flexible.This Combined-cycle Cogeneration Systems can satisfy the wilderness demand of chemical process production electricity consumption with heat in the application of coke-oven plant, and flexible operation, production safety are easy to control, and energy-saving benefit is remarkable, has promotional value widely.
Description of drawings
Fig. 1 is the mobile schematic representation of energy matter of the combined cycle cogeneration Processes and apparatus of fuel with the coke-stove gas for one embodiment of the invention.
Fig. 2 is the flow process and the structural representation of an Application Example of the combined cycle cogeneration Processes and apparatus of fuel with the coke-stove gas for one embodiment of the invention.
Embodiment
At China is the actual national conditions of main energy sources mode with coal, the output of product-coke-stove gas of considering relevant Coal Chemical Industry industry is big, take characteristics easily, linkage heat mechanics, thermal conduction study, chemical kinetics, and the correlation theory of fluid science and technology, the inventor adopts combined cycle and the thermodynamic cycle mode that the cogeneration of heat and power technology combines, and proposes combined cycle cogeneration Processes and apparatus of the present invention.
Combined cycle cogeneration technology of the present invention comprises a plurality of branch's flow processs of utilizing gas turbine and exhaust heat boiler, the high-temperature flue gas that described exhaust heat boiler utilizes corresponding gas turbine to discharge is the heat exchange thermal source, to provide required steam to steam turbine and hot user, wherein, have at least one to be adjustable branch flow process in the described branch flow process, regulate and distribute with the flow that wherein exhaust heat boiler is entered steam turbine, heating network, so that the heat of output, electricity are coordinated mutually with actual heat, electric demand.Corresponding with this technology, combined cycle cogeneration equipment of the present invention is provided with a plurality of branch systems that comprise gas turbine and exhaust heat boiler, the high-temperature flue gas that described exhaust heat boiler utilizes corresponding gas turbine to discharge is the heat exchange thermal source, to provide required steam to steam turbine and hot user, wherein, have at least one to be adjustable branch system in the described branch system, regulate and distribute with the flow that wherein exhaust heat boiler is entered steam turbine, heating network, so that the heat of output, electricity are coordinated mutually with actual heat, electric demand.
The present invention utilizes coke-stove gas to carry out the coproduction of gas-steam combined circulating thermoelectric, be that the coke-stove gas that will produce in the industrial coke oven effectively utilizes, earlier it is carried out necessary purification such as desulfurization, washing, removal of impurities, make it change into the available fuel of gas turbine, the burning back promotes combustion gas turbine acting generating, the flue gas that will have uniform temperature after will burning is again sent into exhaust heat boiler, utilize the waste heat and the water of flue gas to carry out heat exchange, utilize the steam of High Temperature High Pressure to promote steam turbine acting generating at last.The concrete energy matter of the present invention flows as shown in Figure 1.
Combined cycle cogeneration technology of the present invention can be according to gas turbine, exhaust heat boiler and the steam turbine of many different loads of industrial actual conditions flexible configuration; Simultaneously, according to various processes with heat, the electricity consumption needs can satisfy industrial heat user or steam turbine respectively by different proportion with the hot steam of exhaust heat boiler output, realize the production and the service condition of different operating modes and Various Seasonal.Further, utilize combined cycle cogeneration technology of the present invention, can just dispose flexibly, and then make whole power system more reasonable, improve the efficient of total system the utilization of heat energy according to the grade of energy.
Preferably, adjustable branch flow process (system) adopts two pressure exhaust heat boilers, and the high pressure vapour of this pair pressure exhaust heat boiler is supplied with steam turbine, and low pressure vapour is directly supplied with hot user.Further, comprise also in branch's flow process (system) that the steaming of exhaust heat boiler of at least one branch flow process (system) all is used for heat supply, the exhaust heat boiler of at least one branch flow process (system) steams and all supplies steam turbine.
Preferably, the fuel of described each gas turbine adopts the coke-stove gas after the purified treatment, carries out pressurized treatment before entering gas-turbine combustion chamber, to mate with the air pressure that enters.Further, before entering described gas turbine, air also comprises the air cooling of filtering and spray.
Understanding for technological scheme of the present invention being had more fully, is that the combined cycle cogeneration Processes and apparatus of fuel is elaborated below in conjunction with accompanying drawing and embodiment with the coke-stove gas to one embodiment of the invention.
Please refer to shown in Figure 2ly, for one embodiment of the invention is the schematic representation of an Application Example of the combined cycle cogeneration Processes and apparatus of fuel with the coke-stove gas.As shown in the figure, the combined cycle cogeneration technology of present embodiment comprises five branch's flow processs of utilizing gas turbine and exhaust heat boiler, the high-temperature flue gas that each exhaust heat boiler utilizes corresponding gas turbine to discharge is the heat exchange thermal source, to provide required steam to steam turbine and hot user, wherein, in five branch's flow processs, quintafurcation flow process (corresponding to branch system E) is an adjustable branch flow process, the flow that promptly can enter steam turbine, heating network to the exhaust heat boiler in this branch's flow process regulates and distributes so that the heat of output, the electricity coordinate mutually with actual heat, electric demand.Corresponding with this technology, the combined cycle cogeneration equipment of present embodiment comprises five branch system A～E (corresponding to five branch's flow processs) with gas turbine and exhaust heat boiler, the high-temperature flue gas that each exhaust heat boiler utilizes corresponding gas turbine to discharge is the heat exchange thermal source, thereby provide required steam to steam turbine and hot user, in the present embodiment, the branch system E of corresponding quintafurcation flow process is adjustable branch system.
As shown in the figure, the gas turbine of present embodiment comprises (air) gas compressor, the combustion gas turbine that the firing chamber of air mixing burning and burning back flue gas do work after being used for coke-stove gas and compressing, wherein, the main shaft of each combustion gas turbine is connected with generator shaft, to realize the conversion of mechanical energy and electric energy, and output electric energy, the high-temperature flue gas of combustion gas turbine outlet simultaneously enters exhaust heat boiler, the high-temperature steam that produces in each exhaust heat boiler is selected to be used to promote the steam turbine acting or to supply with hot user's heat, steam turbine links to each other with generator and exports electric energy, and the delivery of steam of steam turbine outlet is simultaneously given hot user's heat.
In the present embodiment, the exhaust heat boiler of adjustable branch system E is to adopt two pressure exhaust heat boilers, and the high pressure vapour of this pair pressure exhaust heat boiler is supplied with steam turbine, and low pressure vapour is directly supplied with hot user.
Below in conjunction with Fig. 2 the Processes and apparatus of present embodiment is elaborated, present embodiment has adopted five gas turbines, wherein gas turbine has two kinds of models, gas turbine A100～the D100 that is branch system A～D adopts the T60 type, the gas turbine E100 of branch system E adopts the T130 type, T130 and T60 type gas turbine are the matured product of the top manufacturer's Caterpillar of international light-duty combustion machine-Suo La company, the former high-energy fuel such as rock gas that are mainly used in; T60 and T130 type unit are that rope draws two the most ripe products of small-sized combustion machine.T60 combustion machine full name is a Taurus 60, and specified generated output is 5500KW.T130 combustion machine full name is god of unusual strength 130, specified 15000KW.Each gas turbine 100 has the firing chamber of the coke-stove gas that is suitable for burning, coke-stove gas is as lower calorific value, high hydrogen fuel, be different from unit with the higher calorific value rock gas, low, the easy detonation of its calorific value, operating pressure height, dangerous strong, different on installation form, each firing chamber is equipped with the unit fuel endless tube of two or two above coke-stove gas among the present invention, to obtain required calorific value, select and install to repeat no more with reference to prior art herein as for the specifications and models of endless tube.All be equipped with an exhaust heat boiler 300 behind every gas turbine 100, wherein exhaust heat boiler has two kinds of models, and promptly the exhaust heat boiler of branch system A～D A300～D300 adopts single exhaust heat boiler of pressing; The exhaust heat boiler E300 of branch system E adopts two pressure exhaust heat boilers; Be provided with a back pressure type steam turbine 500 on the whole.The heat-supplying mode that steams of exhaust heat boiler 100 has three kinds, and the exhaust heat boiler A300 of branch system A steams and all is used for heat supply; Exhaust heat boiler B300～D300 of branch system B～D steams and all supplies steam turbine 500; The exhaust heat boiler E300 of branch system E steams then different, and its high pressure vapour is supplied with steam turbine 500, and low pressure vapour is directly supplied with hot user.
The coke-stove gas after the purified treatment is all adopted in the supply of fuel of five gas turbines, carries out pressurized treatment before entering the firing chamber of each gas turbine, to mate with the air pressure that enters.
The import of all gas turbines all is provided with air-filtering and cooling unit, so that the air that enters gas turbine is filtered, and adopts the suitable type of cooling (as atomized water spray etc.) to cool off, to reduce the wasted work of each gas compressor.
The working procedure of equipment of the present invention is as follows:
Be that example describes with branch system A earlier: through filtering, the air of cooling enters the firing chamber after by the gas compressor supercharging, coke-stove gas through purified treatment feeds the firing chamber simultaneously, the two mixes in the firing chamber, burning, gas fume after burning enters combustion gas turbine and does work, the main shaft of combustion gas turbine is connected with generator shaft, realize the conversion of mechanical energy and electric energy, the output electric energy, the high-temperature flue gas of combustion gas turbine outlet simultaneously further enters exhaust heat boiler work, exhaust heat boiler is the heat transmission equipment of the flue gas of water and gas turbine discharge, and wherein the high-temperature steam of Chan Shenging is directly supplied with hot user's heat;
Be example with branch system B again: through filtering, the air of cooling enters the firing chamber after by the gas compressor supercharging, coke-stove gas through purified treatment feeds the firing chamber simultaneously, the two mixes in the firing chamber, burning, gas fume after burning enters combustion gas turbine and does work, the main shaft of combustion gas turbine is connected with generator shaft, realize the conversion of mechanical energy and electric energy, the output electric energy, the high-temperature flue gas of combustion gas turbine outlet simultaneously further enters exhaust heat boiler B300, exhaust heat boiler is the heat transmission equipment of the flue gas of water and gas turbine discharge, wherein the high-temperature steam of Chan Shenging is sent into steam turbine 500, be used to promote the steam turbine acting of steam turbine 500, steam turbine links to each other with generator and exports electric energy, and the steam of steam turbine outlet simultaneously still has certain usable heat, it can be flowed to the industrial user with hot;
The working procedure of branch system C, D is similar to branch system B, repeats no more herein;
Working procedure to branch system E describes at last: through filtering, the air of cooling enters the firing chamber after by the gas compressor supercharging, coke-stove gas through purified treatment feeds the firing chamber simultaneously, the two mixes in the firing chamber, burning, gas fume after burning enters combustion gas turbine and does work, the main shaft of combustion gas turbine is connected with generator shaft, realize the conversion of mechanical energy and electric energy, the output electric energy, the high-temperature flue gas of combustion gas turbine outlet simultaneously further enters two pressure exhaust heat boiler E300, the high pressure vapour that two pressure exhaust heat boiler E300 produce is sent into steam turbine 500, be used to promote the steam turbine acting of steam turbine 500, steam turbine links to each other with generator and exports electric energy, and the low pressure vapour that two pressure exhaust heat boiler E300 produce is directly supplied with hot user.
Wherein the water that consumed in producing steam of exhaust heat boiler then is to replenish by the reverse osmosis water manufacturing system.In this process, reverse osmosis demineralized water that water manufacturing system produces was conducted to through the desalination water pump before this and further heated by the exhaust heat boiler feed water preheater after the steam turbine gland heater heats again, the demineralized water temperature is improved, send into oxygen-eliminating device then and carry out deoxygenation, send into boiler by the high low pressure feed water pump more at last.
Utilize said structure, can carry out rational Match to the configuration of the mode of steaming in the exhaust heat boiler, help providing the efficient of entire system according to the grade height of energy.In addition, since the steam supply way of each exhaust heat boiler, existing direct heating user's mode, direct mode for steam turbine is also arranged, and the steam turbine that is adopted is a back pressure type, and it goes out vapour and can be used as the heat supply use again, thereby can realize heat supply flexibly and power demands.
The present invention is the combined cycle cogeneration process system of fuel with the coke-stove gas, be on the basis with reference to conventional combined cycle, conventional cogeneration of heat and power technology, construction is implemented in conjunction with the processing use of coke-stove gas in the process of coking with many gas turbines, many co-generation units that exhaust heat boiler mates mutually, heat exchange produces steam in exhaust heat boiler, the flow that enters steam turbine and direct heating can suitably distribute at any time, with the heat and electricity of output reasonable production, coordinate mutually with actual heat, electric demand.Outstanding feature of the present invention is the thermal efficiency height of total system, and the power supply heat supply is flexible, and each plant maintenance is easy to maintenance.In addition, also have little, construction period of investment short, take up an area of less, advantage such as water saving.
The novelty of flow process of the present invention has been to make full use of the middle aerogenesis coke-stove gas in the carbonization of coal, is that fuel carries out combined cycle cogeneration with it.Layout by idiographic flow, both combined the high efficiency of combined cycle, enlarged the temperature range of cogeneration of heat and power again, thereby overall performance height, and has heat and power supply characteristic flexibly, not only satisfied the demand of the hot electricity consumption of whole station-service, but also can provide unnecessary heat or electric, createed considerable economic for the external world.
Be example in the industrial actual arrangement mode shown in Fig. 2 below, to present embodiment is that the combined cycle cogeneration device of fuel carries out the explanation of related application and data with the coke-stove gas.Its whole system comprises five branch system A-E and a steam turbine power generating F.Wherein, branch system A-D adopts T60 gas turbine and single exhaust heat boiler of pressing, and branch system E adopts T130 gas turbine and two pressure exhaust heat boiler.Branch system A does not connect steam turbine, but adopts the form of steam direct heating; The high voltage terminal of exhaust heat boiler 300 is connected with the back pressure turbine 500 of steam turbine power generating F among branch system B-D and the E, and the outlet steam of steam turbine 500 is sent into the industrial heat user heat supply; The low voltage terminal steam direct heating of the exhaust heat boiler E300 of branch system E.But combustion gas turbine in each branch system and steam turbine be the output electric energy all, and the low voltage terminal output of branch system A and E is the heat energy of carrier with steam, and the smoke evacuation of branch system A～E exhaust heat boiler can directly be arranged to environment.
In the specific embodiment of the present invention, the design conditions major parameter is as shown in table 1.
The parameter of system is set under table 1 design conditions
At the previous designs operating mode, the performance of each flow sheet equipment is as shown in table 2 in the system that obtains by detailed calculated.
Table 2A-E flow process fire is with analyzing
At design conditions parameter and each flow sheet equipment performance, the overall performance of system ginseng is shown in Table 3.And the performance of conventional co-generation unit is according to present related data, in pressure ratio is between 10～30, the thermal efficiency of simple Ideal Cycle is 33%～38%, the thermal efficiency of combined cycle is 55%～60%, the thermal efficiency of coal-fired steam turbine power plant is 35%～42%, and is that the thermal efficiency of the IGCC of core is 45%～55% with the gas turbine engine systems.And the entire system thermal efficiency of the present invention has reached 71.42%, and fire has also reached 62.46% with efficient.Thereby apparatus arrangement mode of the present invention as can be seen and with can form conventional cogeneration of heat and power compare with combined cycle, have certain advantage aspect the flexibility of efficient and heat, CCHP.
Table 3 entire system performance
As shown in table 3, be that the overall thermal efficient of the Combined-cycle Cogeneration Systems of fuel is 71.42% with the coke-stove gas, fire is 62.46% with efficient.Because the computational methods that relate to have been ignored the fire loss of industrial heat user with the energy process, so can infer that the fire of combined cycle system in the actual production will be a little less than 62.46% with efficient.By combined cycle cogeneration device to effective utilization of industrial by-product combustion gas-coke-stove gas, both realized the associating output of heat energy and electric energy, reached higher system efficient again; Owing to combine the advantage of combined cycle and cogeneration of heat and power, greatly increase thereby make system effectiveness promote potentiality; Simultaneously can be according to different usefulness heat and needs for electricity, the reasonably high-temperature steam heat supply and the ratio that enters steam turbine power generation after the distribution residual heat boiler for exchanging heat, thereby distribute heat supply and electrogenesis amount flexibly, realize the thermoelectric suitable output of coordinating, have good industrial utilization and be worth.
The present invention explains in detail with previous embodiment, so that understand feature and the operational improvement that is used to provide these reinforcements fully.In addition, it is also understood that structure characteristics that these are additional and operations improvement uses of can using separately or mutually combine, and independent or in conjunction with the above-mentioned all features and the explanation of the mode of execution shown in element and the accompanying drawing.Therefore, should be appreciated that to the invention is not restricted to any concrete feature or the combination of element, and any desired characteristics combination described here can both be implemented and not depart from protection scope of the present invention.
Claims (14)
1. combined cycle cogeneration equipment, it is provided with a plurality of branch systems that comprise gas turbine and exhaust heat boiler, the high-temperature flue gas that described exhaust heat boiler utilizes corresponding gas turbine to discharge is the heat exchange thermal source, to provide required steam to steam turbine and hot user, it is characterized in that, have at least one to be adjustable branch system in the described branch system, regulate and distribute with the flow that wherein exhaust heat boiler is entered steam turbine, heating network, so that the heat of output, electricity are coordinated mutually with actual heat, electric demand.
2. combined cycle cogeneration equipment as claimed in claim 1, it is characterized in that, described gas turbine comprises the air pressure mechanism of qi, the combustion gas turbine that the firing chamber of coke-stove gas and compression back air and burning back flue gas do work, the main shaft of combustion gas turbine is connected the conversion that realizes mechanical energy and electric energy with the electric organ main shaft, the output electric energy, the high-temperature flue gas of combustion gas turbine outlet simultaneously enters exhaust heat boiler, the high-temperature steam that produces in each exhaust heat boiler is selected to be used to promote the steam turbine acting or to supply with hot user's heat, steam turbine links to each other with generator and exports electric energy, and the delivery of steam of steam turbine outlet is simultaneously given hot user's heat.
3. combined cycle cogeneration equipment as claimed in claim 2 is characterized in that, the exhaust heat boiler of described adjustable branch system is two pressure exhaust heat boilers, and the high pressure vapour of this pair pressure exhaust heat boiler is supplied with steam turbine, and low pressure vapour is directly supplied with hot user.
4. combined cycle cogeneration equipment as claimed in claim 1 is characterized in that, in the described branch system, steaming of the exhaust heat boiler of at least one branch system all is used for heat supply, and the exhaust heat boiler of another branch system steams and all supplies steam turbine at least.
5. combined cycle cogeneration equipment as claimed in claim 1, it is characterized in that, the fuel of described each gas turbine is the coke-stove gas after the employing purified treatment, utilizes gas compressor to carry out pressurized treatment before entering gas-turbine combustion chamber, to mate with the air pressure that enters.
6. combined cycle cogeneration equipment as claimed in claim 3 is characterized in that, in the described equipment, the gas turbine that is connected with described pair of pressure boiler in the described adjustable branch system adopts the T130 type, and the gas turbine of other branch system adopts the T60 type.
7. as each described combined cycle cogeneration equipment of claim 1 to 6, it is characterized in that the entry end of described gas turbine is provided with the inlet air filtration and the cooling equipment of air.
8. combined cycle cogeneration technology, it comprises a plurality of branch's flow processs of utilizing gas turbine and exhaust heat boiler, the high-temperature flue gas that described exhaust heat boiler utilizes corresponding gas turbine to discharge is the heat exchange thermal source, to provide required steam to steam turbine and hot user, it is characterized in that, have at least one to be adjustable branch flow process in the described branch flow process, regulate and distribute with the flow that wherein exhaust heat boiler is entered steam turbine, heating network, so that the heat of output, electricity are coordinated mutually with actual heat, electric demand.
9. combined cycle cogeneration technology as claimed in claim 8, it is characterized in that, described combined cycle cogeneration technology just disposes flexibly according to the grade of energy, and then makes whole power system more reasonable to the utilization of heat energy, improves the efficient of total system.
10. combined cycle cogeneration technology as claimed in claim 8 is characterized in that, described combined cycle cogeneration technology is according to gas turbine, exhaust heat boiler and the steam turbine of many different loads of industrial actual conditions flexible configuration; Simultaneously, according to various processes with heat, the electricity consumption needs can satisfy industrial heat user or steam turbine respectively by different proportion with the hot steam of exhaust heat boiler output, realize the production and the service condition of different operating modes and Various Seasonal.
11. combined cycle cogeneration technology as claimed in claim 8 is characterized in that, described adjustable branch flow process adopts two pressure exhaust heat boilers, and the high pressure vapour of this pair pressure exhaust heat boiler is supplied with steam turbine, and low pressure vapour is directly supplied with hot user.
12. combined cycle cogeneration technology as claimed in claim 8, it is characterized in that, in described a plurality of branches flow process, steaming of the exhaust heat boiler of at least one branch flow process all is used for heat supply, and the exhaust heat boiler of another branch's flow process steams and all supplies steam turbine at least.
13. combined cycle cogeneration technology as claimed in claim 8 is characterized in that, also comprises before air enters described gas turbine the air cooling of filtering and spray.
14. as each described combined cycle cogeneration technology of claim 8 to 13, it is characterized in that, the fuel of described each gas turbine adopts the coke-stove gas after the purified treatment, carries out pressurized treatment before entering gas-turbine combustion chamber, to mate with the air pressure that enters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110112807.0A CN102191957B (en) | 2011-05-03 | 2011-05-03 | Combined cycle and combined heat and power (CHP) equipment and process |
Applications Claiming Priority (1)
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| CN102510094A (en) * | 2011-10-23 | 2012-06-20 | 西安交通大学 | Combined cycle and pure condensed steam thermal power scheduling system and method |
| CN103836604A (en) * | 2014-03-03 | 2014-06-04 | 上海宝钢节能环保技术有限公司 | Novel waste heat recovery combined heating and power system |
| CN104088697A (en) * | 2014-06-26 | 2014-10-08 | 华电电力科学研究院 | Container type gas power generation system |
| US9739179B2 (en) | 2015-03-13 | 2017-08-22 | International Business Machines Corporation | Working fluid for a device, device and method for converting heat into mechanical energy |
| CN108119891A (en) * | 2017-12-18 | 2018-06-05 | 新智能源系统控制有限责任公司 | A kind of distributed energy cogeneration of heat and power multivariable control system and method |
| CN109634114A (en) * | 2018-11-28 | 2019-04-16 | 北京和隆软件有限公司 | A kind of metallurgy gas fired-boiler steam pipe network and gaspipe network control method for coordinating |
| CN109812306A (en) * | 2017-11-20 | 2019-05-28 | 思安新能源股份有限公司 | Optimize Internet of Things based on the local various energy resources that heat accumulation is adjusted |
| CN110030050A (en) * | 2019-04-11 | 2019-07-19 | 广州发展集团股份有限公司 | A kind of combined cycle system and operating procedure |
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| US9951977B2 (en) | 2015-07-30 | 2018-04-24 | International Business Machines Corporation | Adsorbing heat exchanger |
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| CN102510094A (en) * | 2011-10-23 | 2012-06-20 | 西安交通大学 | Combined cycle and pure condensed steam thermal power scheduling system and method |
| CN102510094B (en) * | 2011-10-23 | 2013-08-14 | 西安交通大学 | Combined cycle and pure condensed steam thermal power scheduling system and method |
| CN103836604A (en) * | 2014-03-03 | 2014-06-04 | 上海宝钢节能环保技术有限公司 | Novel waste heat recovery combined heating and power system |
| CN103836604B (en) * | 2014-03-03 | 2016-01-27 | 上海宝钢节能环保技术有限公司 | A kind of waste heat recovery cogeneration system |
| CN104088697A (en) * | 2014-06-26 | 2014-10-08 | 华电电力科学研究院 | Container type gas power generation system |
| US9739179B2 (en) | 2015-03-13 | 2017-08-22 | International Business Machines Corporation | Working fluid for a device, device and method for converting heat into mechanical energy |
| CN109812306A (en) * | 2017-11-20 | 2019-05-28 | 思安新能源股份有限公司 | Optimize Internet of Things based on the local various energy resources that heat accumulation is adjusted |
| CN108119891A (en) * | 2017-12-18 | 2018-06-05 | 新智能源系统控制有限责任公司 | A kind of distributed energy cogeneration of heat and power multivariable control system and method |
| CN108119891B (en) * | 2017-12-18 | 2019-04-12 | 新智能源系统控制有限责任公司 | A kind of distributed energy cogeneration of heat and power multivariable control system and method |
| CN109634114A (en) * | 2018-11-28 | 2019-04-16 | 北京和隆软件有限公司 | A kind of metallurgy gas fired-boiler steam pipe network and gaspipe network control method for coordinating |
| CN109634114B (en) * | 2018-11-28 | 2021-08-31 | 北京和隆优化科技股份有限公司 | Coordinated control method for steam pipe network and gas pipe network of metallurgical gas boiler |
| CN110030050A (en) * | 2019-04-11 | 2019-07-19 | 广州发展集团股份有限公司 | A kind of combined cycle system and operating procedure |
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