CN102505990B - Power generation method of condensing double-working medium gas turbine circulation system - Google Patents
Power generation method of condensing double-working medium gas turbine circulation system Download PDFInfo
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- CN102505990B CN102505990B CN 201110349830 CN201110349830A CN102505990B CN 102505990 B CN102505990 B CN 102505990B CN 201110349830 CN201110349830 CN 201110349830 CN 201110349830 A CN201110349830 A CN 201110349830A CN 102505990 B CN102505990 B CN 102505990B
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Abstract
The invention discloses a power generation method of a condensing double-working medium gas turbine circulation system, which relates to the technical field of power generation and aims to provide technical scheme for reduction of cost and fault rate and increase of power generation efficiency. The method is characterized in that: firstly, natural gas is subjected to heat exchange with exhaust gas of a gas turbine; and then is boosted in pressure by a gas compressor and then sent to a mixer, the natural gas is mixed with water vapor in the mixer and then enters a combustion chamber to combust; water vapor in the exhaust gas of the gas turbine is condensed as water in a high vacuum state by a condenser, next, the water is treated as chemical desalted water; next, the chemical desalted water is used for cooling the exhaust gas of the gas turbine and compressed air; heated return water is sent to a vapor-water separator; a heating member of the gas turbine is used for heating exhaust water of the vapor-water separator as water vapor and then the water vapor is sent back to the vapor-water separator; saturated water vapor exhausted by the vapor-water separator is heated as overheated water vapor by high-temperature compressed air, and then the overheated water vapor is sent to the mixer to be mixed with the natural gas. The method provided by the invention is low in emission concentration of pollutants in the exhaust gas.
Description
Technical field
The present invention relates to generation technology, particularly relate to a kind of technology of condensed steam type duplex matter combustion gas turbine circulatory system electricity-generating method.
Background technique
Consume the globalization energy crisis and the environmental pollution ecological failure that cause owing to fossil energy is a large amount of more and more serious, develops the generation technology of advanced high-efficiency cleaning, is the important channel that addresses these problems.
At present, though the combined cycle that with the fuel cell is core in theory can realize the highest generating efficiency (about 70%), and has an advantage of certain clean environment firendly, but need badly from material and cost of production etc. on the key issue of solution, fuel cell will the large scale investment commercial applications in present stage and following a very long time.
Gas turbine mainly has the remarkable advantage of the following aspects: compact structure, quality are light, the specific power quality is little, floor space is little, startup is fast, installation is fast, operate steadily, reliability height, thermal efficiency height, disposal of pollutants are low.The height of gas turbine research manufacture level is the important symbol that directly reflects a national science technical strength and overall national strength, many countries all first develop the emphasis of field and key technology research and development to advanced person's gas turbine technology as national science and technology, so also will exist for a long time as the gas turbine of aviation, power industry major impetus device.
The electricity generating device of existing employing gas turbine all is that employing is air cooled, about 75% of compressor air flow is used for cooling down high-temperature combustion gas and high-temperature component, therefore the compression wasted work of gas compressor is very big, the structure of firing chamber is relative complex also, its cost and rate of fault are all higher, and the exhaust heat of gas turbine is not utilized effectively yet, and the flue gas amounts of sulphur contaminants in its exhaust and the effluent concentration of NOx pollutant are also higher.
Summary of the invention
At the defective that exists in the above-mentioned prior art, cost and rate of fault that technical problem to be solved by this invention provides a kind of firing chamber are low, the compression wasted work of gas compressor is little, the generating efficiency height effectively reduces the condensed steam type duplex matter combustion gas turbine circulatory system electricity-generating method of the effluent concentration of flue gas amounts of sulphur contaminants and NOx pollutant.
In order to solve the problems of the technologies described above, a kind of condensed steam type duplex matter combustion gas turbine circulatory system electricity-generating method provided by the present invention is characterized in that:
Exhaust gas heat exchanging after the desulfurization of rock gas process after elder generation and the gas turbine work done is sent into mixer after boosting by the gas pressure mechanism of qi again, enters combustion chambers burn in mixer with after water vapor mixes, and then the propelling gas turbine engine acting, drives generator for electricity generation;
Water vapor in the exhaust after utilizing vapour condenser with the gas turbine work done condenses into water under high vacuum state;
The condensate pump of vapour condenser generation is gone into the water processor decontamination be treated to pure chemical demineralizing water;
With the chemical demineralizing water separated into two parts that water processor generates, a part is used for the exhaust of cooling gas turbine, and another part is used for cooled compressed air, and the backwater after the intensification is all sent into steam-water separator;
The hot-end component that utilizes gas turbine is sent steam-water separator back to after the draining of steam-water separator is heated to be water vapor;
Utilizing high temperature compressed air that the saturated vapor of steam-water separator discharging is heated to be sends into mixer behind the superheated vapour and mixes with rock gas.
Condensed steam type duplex matter combustion gas turbine circulatory system electricity-generating method provided by the invention has following beneficial effect:
1) adopt water cooling mode to substitute traditional cooling air mode, therefore chamber structure is fairly simple, can effectively reduce its cost and rate of fault, and air and the fuel ratio combustion of can realizing ideal, can reduce the compression wasted work of gas compressor, with respect to the air compression wasted work of high pressure ratio, the incompressibility of water makes and is pressed onto under the situation of same pressure and mass flow rate that the compression wasted work of water almost can be ignored;
2) utilize vapour condenser to reclaim the waste heat of combustion turbine exhaustion and the water conservancy project matter in the exhaust, can when improving circulating generation efficient, save water resources;
3) the gas compressor air suction inlet is equipped with the suction that electric cleaner can reduce solid grain contamination, prevents the dirty of heat transfer surface and blade; Thereby desulfurizing tower can effectively be removed the effluent concentration of the sulphur reduction flue gas amounts of sulphur contaminants in the rock gas; The firing chamber adds water the generation that steam can effectively reduce the NOx pollutant.
Description of drawings
Fig. 1 is the structural representation of the condensed steam type duplex matter combustion gas turbine circulatory system electricity generating device of the embodiment of the invention.
Embodiment
Below in conjunction with description of drawings embodiments of the invention are described in further detail, but present embodiment is not limited to the present invention, every employing analog structure of the present invention and similar variation thereof all should be listed protection scope of the present invention in.
As shown in Figure 1, a kind of condensed steam type duplex matter combustion gas turbine circulatory system electricity generating device that the embodiment of the invention provides, comprise generator 19, gas turbine 5, firing chamber 2 and air gas compressor, the relief opening of described firing chamber 2 connects the suction port of gas turbine 5, the line shaft of described gas turbine 5 connects generator 19, it is characterized in that: also comprise mixer 6, gas pressure mechanism of qi 18, steam-water separator 10, electric cleaner 1, inter cooler 8, aftercooler 9, economizer 11, vapour condenser 14, water processor 17, desulfurizing tower 7;
Described air gas compressor has two, is respectively low-pressure air gas compressor 3, high-pressure air gas compressor 4;
Described mixer 6 is provided with a relief opening, two suction ports, and two suction port is respectively first suction port, second suction port, and its relief opening is received the fuel gas inlet of firing chamber, and its second suction port is received the relief opening of gas pressure mechanism of qi 18;
The suction port of described electric cleaner 1 is communicated with atmosphere, and its relief opening is received the suction port of low-pressure air gas compressor 3;
The relief opening of low-pressure air gas compressor 3 is received in the air side import of described inter cooler 8, and the suction port of high-pressure air gas compressor 4 is received in its air side outlet, and its water side outlet is received the water intake of steam-water separator 10;
The relief opening of high-pressure air gas compressor 4 is received in the air side import of described aftercooler 9, and the air intlet of firing chamber 2 is received in its air side outlet, and the relief opening of steam-water separator 10 is received in its steam side import, and first suction port of mixer 6 is received in its steam side outlet;
The drain opening of described steam-water separator 10 is received its water intake through a feed water pump 13, a hot junction cooler 12;
The water side outlet of described economizer 11 is received the water intake of steam-water separator 10, and the relief opening of gas turbine 5 is received in its gas side-entrance, and its gas side outlet is received the air cavity suction port of vapour condenser 14;
The drain opening of described water processor 17 is received the water side-entrance of inter cooler 8 and the water side-entrance of economizer 11 respectively;
The suction port of described desulfurizing tower 7 is received outside natural air-air source;
The cooling medium inlet of described vapour condenser 14 is received the relief opening of desulfurizing tower 7, the suction port of gas pressure mechanism of qi 18 is received in its cooling medium outlet, its air cavity water supplement port is received external water source, its air cavity bleeding point is received outside gas exhaust duct through a vacuum pump 15, and the water intake of water processor 17 is received in its air cavity water of condensation outlet through a condensate pump 16.
A kind of condensed steam type duplex matter combustion gas turbine circulatory system electricity-generating method that the embodiment of the invention provides is characterized in that:
Outside air enters inter cooler 8 successively after electric cleaner 1 dust removal process, low-pressure air gas compressor 3 boost, in inter cooler 8 and after the draining heat exchange of water processor 17, enter high-pressure air gas compressor 4, behind high-pressure air gas compressor 4 secondary boosters, enter aftercooler 9, enter firing chamber 2 after the water vapor heat exchange of in aftercooler 9, discharging with steam-water separator 10;
7 desulfurization of natural gas via desulfurizing tower enter vapour condenser 14 after handling, in vapour condenser 14 and after the intensification of the exhaust gas heat exchanging of gas turbine 5, enter gas pressure mechanism of qi 18, after boosting, gas pressure mechanism of qi 18 enters mixer 6, in mixer 6 with after water vapor mixes, enter firing chamber 2 burnings, propelling gas turbine engine 5 does work after further improving temperature, thereby drives generator for electricity generation;
The exhaust of gas turbine 5 is introduced into economizer 11, in economizer 11 and after the draining heat exchange of water processor 17 cooling, enter vapour condenser 14, in vapour condenser 14 and after the heat exchange gas cooling, water vapor wherein condenses into water and discharges from the air cavity water of condensation outlet of vapour condenser 14 under high vacuum state, gas such as carbon dioxide dissolved can remove under vacuum in the water, incondensable gas is extracted by vacuum pump 15 through the air cavity bleeding point of vapour condenser 14;
The water of condensation that vapour condenser 14 is discharged to be through the condensate pump 16 laggard water processor 17 of going into that boosts, and exchanges through zwitterion water processor 17 in and removes all contaminations, becomes pure chemical demineralizing water;
The draining of water processor 17 is divided into two-way, wherein one the road flow into inter cooler 8 earlier, in inter cooler 8 Yu after the pressurized air heat exchange, flow into steam-water separator 10 again, another road flows into economizer 11 earlier, in economizer 11 and after the intensification of the exhaust gas heat exchanging of gas turbine 5, flow into steam-water separator 10 again, water processor 17 unnecessary drainings can be supplied the outside;
The draining of steam-water separator 10 enters hot junction cooler 12 after feed water pump 13 boosts, in hot junction cooler 12, become water vapor behind the heat of the hot-end component of absorption gas turbine and flow back to steam-water separator 10, the saturated vapor of steam-water separator 10 dischargings is introduced into aftercooler 9, in aftercooler 9 with the high temperature compressed air heat exchange after, become superheated vapour and enter mixer 6 and mix with rock gas.
Claims (1)
1. condensed steam type duplex matter combustion gas turbine circulatory system electricity-generating method is characterized in that:
Exhaust gas heat exchanging after the desulfurization of rock gas process after elder generation and the gas turbine work done is sent into mixer after boosting by the gas pressure mechanism of qi again, enters combustion chambers burn in mixer with after water vapor mixes, and then the propelling gas turbine engine acting, drives generator for electricity generation;
Water vapor in the exhaust after utilizing vapour condenser with the gas turbine work done condenses into water under high vacuum state;
The condensate pump of vapour condenser generation is gone into the water processor decontamination be treated to pure chemical demineralizing water;
With the chemical demineralizing water separated into two parts that water processor generates, a part is used for the exhaust of cooling gas turbine, and another part is used for cooling from the pressurized air of air compressor, and the backwater after the intensification is all sent into steam-water separator;
The hot-end component that utilizes gas turbine is sent steam-water separator back to after the draining of steam-water separator is heated to be water vapor;
Being used to send into mixer after the high temperature compressed air of high-pressure compressor is heated to be superheated vapour with the saturated vapor of steam-water separator discharging mixes with rock gas.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201110349830 CN102505990B (en) | 2011-11-08 | 2011-11-08 | Power generation method of condensing double-working medium gas turbine circulation system |
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| CN 201110349830 CN102505990B (en) | 2011-11-08 | 2011-11-08 | Power generation method of condensing double-working medium gas turbine circulation system |
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| CN102505990A CN102505990A (en) | 2012-06-20 |
| CN102505990B true CN102505990B (en) | 2013-09-25 |
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| CN107792329A (en) * | 2017-10-20 | 2018-03-13 | 厦门大学 | Power and water joint supply method |
| CN107829825A (en) * | 2017-10-20 | 2018-03-23 | 厦门大学 | The gas turbine engine systems of coproduction water and the method for gas turbine coproduction water |
| CN107725191A (en) * | 2017-10-20 | 2018-02-23 | 厦门大学 | Power and water joint supply device |
| CN111780982B (en) * | 2020-05-27 | 2022-08-02 | 中汽研汽车检验中心（天津）有限公司 | Vehicle-mounted simple emission testing device and method for non-road diesel engine |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1996038656A1 (en) * | 1995-06-01 | 1996-12-05 | Cabot Corporation | A liquefied natural gas (lng) fueled combined cycle power plant and an lng fueled gas turbine plant |
| US5822974A (en) * | 1997-02-11 | 1998-10-20 | Electric Power Research Inst. | Hybrid biomass and natural gas/oil power generation system |
| CN1807860A (en) * | 2005-01-20 | 2006-07-26 | 华南理工大学 | Smoke low-temperature residual heat utilization system with natural gas cooling-heating combined power device and operating method thereof |
| EP2133515A1 (en) * | 2007-04-11 | 2009-12-16 | Hitachi, Ltd. | Power supply equipment for natural gas liquefaction plant |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63186908U (en) * | 1987-05-25 | 1988-11-30 |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1996038656A1 (en) * | 1995-06-01 | 1996-12-05 | Cabot Corporation | A liquefied natural gas (lng) fueled combined cycle power plant and an lng fueled gas turbine plant |
| US5822974A (en) * | 1997-02-11 | 1998-10-20 | Electric Power Research Inst. | Hybrid biomass and natural gas/oil power generation system |
| CN1807860A (en) * | 2005-01-20 | 2006-07-26 | 华南理工大学 | Smoke low-temperature residual heat utilization system with natural gas cooling-heating combined power device and operating method thereof |
| EP2133515A1 (en) * | 2007-04-11 | 2009-12-16 | Hitachi, Ltd. | Power supply equipment for natural gas liquefaction plant |
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