CN104964479A - Fuel gas combined heat and power generation heating supply system based on absorption-type heat exchange - Google Patents
Fuel gas combined heat and power generation heating supply system based on absorption-type heat exchange Download PDFInfo
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- CN104964479A CN104964479A CN201510395520.1A CN201510395520A CN104964479A CN 104964479 A CN104964479 A CN 104964479A CN 201510395520 A CN201510395520 A CN 201510395520A CN 104964479 A CN104964479 A CN 104964479A
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- Prior art keywords
- absorption
- heat
- type heat
- heat exchange
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D3/00—Hot-water central heating systems
- F24D3/18—Hot-water central heating systems using heat pumps
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- 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
- F01D15/10—Adaptations for driving, or combinations with, electric generators
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- 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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D2200/00—Heat sources or energy sources
- F24D2200/12—Heat pump
- F24D2200/126—Absorption type heat pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D2200/00—Heat sources or energy sources
- F24D2200/16—Waste heat
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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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/27—Relating to heating, ventilation or air conditioning [HVAC] technologies
- Y02A30/274—Relating to heating, ventilation or air conditioning [HVAC] technologies using waste energy, e.g. from internal combustion engine
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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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P80/00—Climate change mitigation technologies for sector-wide applications
- Y02P80/10—Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier
- Y02P80/15—On-site combined power, heat or cool generation or distribution, e.g. combined heat and power [CHP] supply
Abstract
The invention discloses a fuel gas combined heat and power generation heating supply system based on absorption-type heat exchange. The fuel gas combined heat and power generation heating supply system comprises a waste heat boiler, an electric generator, a condenser, a cooling circulation pump, a cooling tower, a heat supply network circulating pump, a first absorption-type heat exchange unit, a second absorption-type heat exchange unit, a smoke ventilation device, an absorption-type heat pump and a gas and water heat exchanger; a steam turbine is installed on one side of the waste heat boiler, and the steam turbine is connected with the electric generator; the condenser and the steam turbine are connected with pipelines of the cooling tower; the smoke ventilation device is connected with pipelines of the first absorption-type heat exchange unit and the second absorption-type heat exchange unit. According to the fuel gas combined heat and power generation heating supply system based on the absorption-type heat exchange, in a heating station, by means of an absorption-type heat exchange technology, a conventional plate heat exchanger is replaced with the absorption-type heat exchange units, actual supply water temperature of a heat supply network is 120 DEG C, the return water temperature of 25 DEG C of the heat supply network is achieved so as to recycle a large number of waste heat of power stations, and the energy utilization efficiency of the system is improved.
Description
Technical field
The present invention relates to heat and change system applied technical field, especially a kind of gas cogeneration heating system based on absorption heat exchange.
Background technology
The main component of natural gas is methane (CH4), and sulfur content is very little, hardly containing SO2 and flue dust in burning.Meanwhile, due in the combustible component of natural gas containing a large amount of hydrogen, thus burning generates the CO2 contained in product and also can obviously reduce, and only has 60% of coke, 80% of oil.For some key cities, the requirement of its energy-saving and emission-reduction is relatively stricter, and under the prerequisite investigating multiple power generation and heat supply technology, gas cogeneration technology becomes the first-selection at each large thermoelectricity center.The outstanding advantages such as gas cogeneration device has that generating efficiency is high, floor space is few, using water wisely, construction period are short, flexible operation, while heating and refrigerating, also can produce high-grade electric energy, realize the cascade utilization of the energy, there is sizable energy-saving and emission-reduction meaning.
Although have certain advantage, conventional gas co-generation unit also also exists letter problem to be solved: 1) heat transfer temperature difference of first and second net between thermal substation and thermal source place carbonated drink is very large, causes very large irreversible heat loss.2) waste of gas power station fume afterheat is serious.Containing a large amount of steam gasification latent heat in flue gas, and correspond to different excess air coefficients, when exhaust gas temperature is lower than 40 DEG C-60 DEG C, the condensation heat of flue gas just can be recovered, and exhaust gas temperature just can obtain good waste heat recovery effect 30 DEG C-40 DEG C time.And in the combustion gas combined cooling, heat and power System of routine, exhaust gas temperature is generally all more than 90 DEG C, if the heat of energy recovered flue gas, will.Greatly improve efficiency of energy utilization.But in district heating field, heat supply network return water temperature, generally more than 50-60 DEG C, higher than the dew point of flue gas condensing, cannot realize effective flue gas condensing recuperation of heat.3) in addition, current cogeneration of heat and power thermoelectricity, than low, is generally 0.6-0.8.For meeting thermic load, comparing with gas fired-boiler, needing to consume 2-3 gas quantity doubly.Natural gas is valuable resource, for the city of natural gas supply anxiety, adds pressure undoubtedly, is also affected for thermal safety.
Prior art is difficult to the productive life needs meeting people, in order to solve above-mentioned Problems existing, the present invention proposes a kind of gas cogeneration heating system based on absorption heat exchange.
For realizing this technical purpose, the technical solution used in the present invention is: a kind of gas cogeneration heating system based on absorption heat exchange, comprises waste heat boiler, generator, condenser, cooling circulating water pump, cooling tower, pumps for hot water supply net, the first absorption type heat change planes group, the second absorption type heat changes planes group, flue gas rebreather, absorption heat pump and carbonated drink heat exchanger; Described waste heat boiler side is provided with steam turbine, and this steam turbine is connected with generator; Described condenser is connected with steam turbine and cooling tower pipeline; The steam turbine connecting waste heat boiler is connected with absorption heat pump and carbonated drink heat exchanger pipeline, and absorption heat pump is connected flue gas rebreather with after the series connection of carbonated drink heat exchanger pipeline; Described flue gas rebreather and the first absorption type heat are changed planes and to be organized and the second absorption type heat is changed planes and organized pipeline and be connected, and the first absorption type heat is changed planes, group and the second absorption type heat are changed planes to organize and also connected with carbonated drink heat exchanger pipeline.
As further technical scheme of the present invention: the pipeline that described condenser is connected with cooling tower is provided with cooling circulating water pump; Described flue gas rebreather and the first absorption type heat are changed planes and to be organized and the second absorption type heat is changed planes on the pipeline organizing and be connected and is provided with pumps for hot water supply net.
As further technical scheme of the present invention: described absorption heat pump and carbonated drink heat exchanger are all connected with solidifying water pipe; Described flue gas rebreather is provided with smoke-intake pipe and smoke exhaust pipe.
Compared with prior art, the present invention has following beneficial effect: should based on the gas cogeneration heating system of absorption heat exchange, in thermal substation, utilize absorption heat exchange technology, absorption heat exchange unit is adopted to replace conventional plate type heat exchanger, the actual temperature of supply water of consideration heat supply network is 120 DEG C, then can realize heat supply network return water temperature 25 DEG C, significantly reduce heat supply network return water temperature and supply backwater temperature difference, to reclaim a large amount of waste heat used heat in power plant, the efficiency of energy utilization of raising system, reduces caliber simultaneously, reduces pipe network investment.Overall structure is simple, novel in design, practical, is easy to promote the use of.
Summary of the invention
Accompanying drawing explanation
Fig. 1 is overall structure schematic diagram of the present invention;
Wherein: waste heat boiler 1; Generator 2; Condenser 3; Cooling circulating water pump 4; Cooling tower 5; Pumps for hot water supply net 6; First absorption type heat is changed planes group 7; Second absorption type heat is changed planes group 8; Flue gas rebreather 9; Absorption heat pump 10; Carbonated drink heat exchanger 11.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making other embodiments all obtained under creative work prerequisite, belong to the scope of protection of the invention.
Refer to Figure of description 1, in the embodiment of the present invention, based on a gas cogeneration heating system for absorption heat exchange, comprise waste heat boiler 1, generator 2, condenser 3, cooling circulating water pump 4, cooling tower 5, pumps for hot water supply net 6, first absorption type heat group 7, second absorption type heat of changing planes changes planes group 8, flue gas rebreather 9, absorption heat pump 10 and carbonated drink heat exchanger 11; Described waste heat boiler 1 side is provided with steam turbine, and this steam turbine is connected with generator 2; Described condenser 3 is connected with steam turbine and cooling tower 5 pipeline; The steam turbine connecting waste heat boiler 1 is connected with absorption heat pump 10 and carbonated drink heat exchanger 11 pipeline, and absorption heat pump 10 is connected flue gas rebreather 9 with after the series connection of carbonated drink heat exchanger 11 pipeline; Described flue gas rebreather 9 and the first absorption type heat group 7 and the second absorption type heat group 8 pipeline of changing planes of changing planes is connected, and the first absorption type heat is changed planes, group 7 and the second absorption type heat group 8 of changing planes also is connected with carbonated drink heat exchanger 11 pipeline.
As further technical scheme of the present invention: the pipeline that described condenser 3 is connected with cooling tower 5 is provided with cooling circulating water pump 4; Change planes group 7 and the second absorption type heat of described flue gas rebreather 9 and the first absorption type heat is changed planes on pipeline that group 8 is connected and is provided with pumps for hot water supply net 6.
As further technical scheme of the present invention: described absorption heat pump 10 and carbonated drink heat exchanger 11 are all connected with solidifying water pipe; Described flue gas rebreather 9 is provided with smoke-intake pipe and smoke exhaust pipe.
Action principle of the present invention is: the heat that burning release is carried out in combustion gas by waste heat boiler is used for steam, steam turbine rotates and then reaches the effect of generating, heat in steam turbine passes through the effect of cooling circulating water pump and steamer 3 and then cooled tower cooler, steam makes partial heat through flue gas rebreather 9, absorption heat pump 10 and carbonated drink heat exchanger 11, enter into change planes group 7 and the second absorption type heat of the first absorption type heat to change planes group 8, heat and then used.
To those skilled in the art, but the invention is not restricted to the details of above-mentioned one exemplary embodiment, and when not deviating from spirit of the present invention or essential characteristic, the present invention can be realized in other specific forms.Therefore, no matter from which point, all should embodiment be regarded as exemplary, and be nonrestrictive, scope of the present invention is limited by claims instead of above-mentioned explanation, and all changes be therefore intended in the implication of the equivalency by dropping on claim and scope are included in the present invention.Any Reference numeral in claim should be considered as the claim involved by limiting.
The above; be only preferred embodiment of the present invention; not in order to limit the present invention, every above embodiment is done according to technical spirit of the present invention any trickle amendment, equivalently replace and improve, within the protection domain that all should be included in technical solution of the present invention.
Claims (3)
1., based on a gas cogeneration heating system for absorption heat exchange, comprise waste heat boiler (1), generator (2), condenser (3), cooling circulating water pump (4), cooling tower (5), pumps for hot water supply net (6), the first absorption type heat change planes group (7), the second absorption type heat changes planes group (8), flue gas rebreather (9), absorption heat pump (10) and carbonated drink heat exchanger (11); It is characterized in that: described waste heat boiler (1) side is provided with steam turbine, this steam turbine is connected with generator (2); Described condenser (3) is connected with steam turbine and cooling tower (5) pipeline; The steam turbine connecting waste heat boiler (1) is connected with absorption heat pump (10) and carbonated drink heat exchanger (11) pipeline, and absorption heat pump (10) is connected flue gas rebreather (9) with after the series connection of carbonated drink heat exchanger (11) pipeline; Described flue gas rebreather (9) and the first absorption type heat group (7) and the second absorption type heat group (8) pipeline of changing planes of changing planes is connected, and the first absorption type heat is changed planes, group (7) and the second absorption type heat group (8) of changing planes also is connected with carbonated drink heat exchanger (11) pipeline.
2. a kind of gas cogeneration heating system based on absorption heat exchange according to claim 1, is characterized in that: the pipeline that described condenser (3) is connected with cooling tower (5) is provided with cooling circulating water pump (4); Change planes group (7) and the second absorption type heat of described flue gas rebreather (9) and the first absorption type heat is changed planes on pipeline that group (8) is connected and is provided with pumps for hot water supply net (6).
3. a kind of gas cogeneration heating system based on absorption heat exchange according to claim 1, is characterized in that: described absorption heat pump (10) and carbonated drink heat exchanger (11) are all connected with solidifying water pipe; Described flue gas rebreather (9) is provided with smoke-intake pipe and smoke exhaust pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510395520.1A CN104964479A (en) | 2015-07-07 | 2015-07-07 | Fuel gas combined heat and power generation heating supply system based on absorption-type heat exchange |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510395520.1A CN104964479A (en) | 2015-07-07 | 2015-07-07 | Fuel gas combined heat and power generation heating supply system based on absorption-type heat exchange |
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| CN104964479A true CN104964479A (en) | 2015-10-07 |
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| CN201510395520.1A Pending CN104964479A (en) | 2015-07-07 | 2015-07-07 | Fuel gas combined heat and power generation heating supply system based on absorption-type heat exchange |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105485649A (en) * | 2016-01-14 | 2016-04-13 | 张东 | Efficient waste heat recycling comprehensive utilizing system |
| CN105790312A (en) * | 2016-05-11 | 2016-07-20 | 大连派思新能源发展有限公司 | Distributed energy resource station applied to LNG (Liquefied Natural Gas) plant |
| CN105841396A (en) * | 2016-04-01 | 2016-08-10 | 华中科技大学 | Combined cooling heating and power supply composite energy supply system based on waste heat deep recycling |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105485649A (en) * | 2016-01-14 | 2016-04-13 | 张东 | Efficient waste heat recycling comprehensive utilizing system |
| CN105841396A (en) * | 2016-04-01 | 2016-08-10 | 华中科技大学 | Combined cooling heating and power supply composite energy supply system based on waste heat deep recycling |
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Application publication date: 20151007 |