CN102913941A - Two-stage fuel gas boiler flue gas heat energy recovery system - Google Patents
Two-stage fuel gas boiler flue gas heat energy recovery system Download PDFInfo
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- CN102913941A CN102913941A CN2012104430495A CN201210443049A CN102913941A CN 102913941 A CN102913941 A CN 102913941A CN 2012104430495 A CN2012104430495 A CN 2012104430495A CN 201210443049 A CN201210443049 A CN 201210443049A CN 102913941 A CN102913941 A CN 102913941A
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- boiler
- heat
- heat exchanger
- flue gas
- inlet air
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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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/52—Heat recovery pumps, i.e. heat pump based systems or units able to transfer the thermal energy from one area of the premises or part of the facilities to a different one, improving the overall efficiency
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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
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
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Abstract
The invention relates to a two-stage fuel gas boiler flue gas heat energy recovery system. The recovery system comprises a fuel gas boiler (6), a boiler air intake system (4) and a boiler smoke exhaust system (5), wherein a boiler air intake heat exchanger (3) and a flue gas heat energy recovery heat exchanger (1) are added in the boiler smoke exhaust system (5) and the boiler air intake system (4), the boiler air intake heat exchanger (3) adopts a heat pipe heat exchanger, the flue gas heat energy recovery heat exchanger (1) is arranged at a position close to the fuel gas boiler (6), the boiler air intake heat exchanger (3) is arranged at a position far away from the fuel gas boiler (6), and a pipeline system (7) of the flue gas heat energy recovery heat exchanger (1) is connected with circulating water of a heat pump (2). The recovery system recovers a large amount of latent heat and sensible heat in exhaust smoke of the fuel gas boiler, one part of the heat is used for preheating inlet air of the boiler and reducing the consumption of the natural gas, the other part of the heat serves as a heat source of the heat pump and is used by other heat sources after the grade of the heat is improved, and condensed water is produced during temperature reduction of the flue gas.
Description
Technical field
The present invention relates to a kind of two-period form gas fired-boiler smoke heat energy recovery system.Be used for the energy-saving and emission-reduction transformation of boiler or similar industry.
Background technology
Follow wideling popularize of national energy-saving environmental protection policy rules, gas fired-boiler has the trend that replaces gradually coal-burning boiler, oil burning boiler in a lot of industries.Main cause is that coal and oil produce a large amount of dust when burning, a large amount of sour gas formation of burning generation acid rain weldings.Compare with oil with coal, natural gas is a kind of clean energy resource, and sufficient combustion produces dust hardly; Natural gas has the acid gas removal link in process of production, so the content of acid gas in the natural gas is extremely low, acid gas-containing hardly in the boiler exhaust gas does not destroy environment.
Because the smoke evacuation of gas fired-boiler is very clean, so the waste heat that reclaims the gas fired-boiler smoke evacuation is convenient.But, contain the steam about 18% in the gas fired-boiler smoke evacuation, condensing at worst cold case steam discharges a large amount of latent heat, and this latent heat amount is huge, to such an extent as to rely on merely the preboiler air intake can't reclaim it fully, this just needs to adopt new scheme and technology fully to reclaim this waste heat.
Summary of the invention
The object of the invention is to overcome above-mentioned deficiency, a kind of two-period form gas fired-boiler smoke heat energy recovery system that can reclaim the latent heat that water recovery discharges in the gas fired-boiler smoke evacuation fully is provided.
The object of the present invention is achieved like this: a kind of two-period form gas fired-boiler smoke heat energy recovery system, comprise: gas fired-boiler, inlet air of boiler system and boiler exhaust gas system, have additional inlet air of boiler heat exchanger and flue gas heat in described boiler exhaust gas system and the inlet air of boiler system and reclaim heat exchanger, the inlet air of boiler heat exchanger adopts heat exchange of heat pipe, wherein the hot side of inlet air of boiler heat exchanger is arranged in the boiler exhaust gas system, cold side is arranged in the inlet air of boiler system, flue gas heat reclaims heat exchanger and is arranged near the gas fired-boiler place, the inlet air of boiler heat exchanger is arranged on away from the gas fired-boiler place, and the pipe-line system that flue gas heat reclaims heat exchanger is connected with the recirculated water of heat pump.
The invention has the beneficial effects as follows:
Waste heat in the inlet air of boiler heat exchanger recovery boiler smoke evacuation of the present invention is used for the preboiler air intake, improves the inlet air of boiler enthalpy, reduces boiler natural gas consumption; Heat in the flue gas heat recovery heat exchanger recovered flue gas is as the thermal source of heat pump, and flue gas heat reclaims heat exchanger solidifying water generates, has played simultaneously the dual purpose of recycle-water resource and the energy.
Description of drawings
Fig. 1 is two-period form gas fired-boiler smoke heat energy recovery system schematic flow sheet of the present invention.
Reference numeral among the figure:
Flue gas heat reclaims heat exchanger 1, heat pump 2, inlet air of boiler heat exchanger 3, inlet air of boiler system 4, boiler exhaust gas system 5, gas fired-boiler 6, pipe-line system 7.
The specific embodiment
Referring to Fig. 1, Fig. 1 is a kind of two-period form gas fired-boiler of the present invention smoke heat energy recovery system schematic flow sheet.As seen from Figure 1, two-period form gas fired-boiler smoke heat energy recovery system of the present invention, comprise: gas fired-boiler 6, inlet air of boiler system 4 and boiler exhaust gas system 5, have additional inlet air of boiler heat exchanger 3 and flue gas heat in described boiler exhaust gas system 5 and the inlet air of boiler system 4 and reclaim heat exchanger 1, inlet air of boiler heat exchanger 3 adopts heat exchange of heat pipe, wherein the hot side of inlet air of boiler heat exchanger 3 is arranged in the boiler exhaust gas system 5, cold side is arranged in the inlet air of boiler system 4, flue gas heat reclaims heat exchanger 1 and is arranged near gas fired-boiler 6 places, inlet air of boiler heat exchanger 3 is arranged on away from gas fired-boiler 6 places, and the pipe-line system 7 that flue gas heat reclaims heat exchanger 1 is connected with the recirculated water of heat pump 2.
The flue gas of gas fired-boiler 6 approximately enters boiler exhaust gas system 5 about 80 ℃, at first reclaim heat exchanger 1 through flue gas heat, passes through inlet air of boiler heat exchanger 3 again, after the secondary cooling, finishes flue gas energy recovery, discharges at last system; After new wind enters inlet air of boiler system 4, at first through entering gas fired-boiler after 3 preheatings of inlet air of boiler heat exchanger; After being transferred to heat pump 2 and promoting grade through pipe-line system 7, the heat that flue gas heat recovery heat exchanger 1 reclaims requires for other purposes.Flue gas reclaims heat exchanger 1 and inlet air of boiler heat exchanger 3 through flue gas heat, and the secondary temperature-fall period produces solidifying water, and these solidifying water are recyclable.
Claims (1)
1. two-period form gas fired-boiler smoke heat energy recovery system, comprise: gas fired-boiler (6), inlet air of boiler system (4) and boiler exhaust gas system (5), have additional inlet air of boiler heat exchanger (3) and flue gas heat in described boiler exhaust gas system (5) and the inlet air of boiler system (4) and reclaim heat exchanger (1), inlet air of boiler heat exchanger (3) adopts heat exchange of heat pipe, wherein the hot side of inlet air of boiler heat exchanger (3) is arranged in the boiler exhaust gas system (5), cold side is arranged in the inlet air of boiler system (4), flue gas heat recovery heat exchanger (1) is arranged near gas fired-boiler (6) and locates, inlet air of boiler heat exchanger (3) is arranged on away from gas fired-boiler (6) and locates, and the pipe-line system (7) that flue gas heat reclaims heat exchanger (1) is connected with the recirculated water of heat pump (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104430495A CN102913941A (en) | 2012-11-08 | 2012-11-08 | Two-stage fuel gas boiler flue gas heat energy recovery system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104430495A CN102913941A (en) | 2012-11-08 | 2012-11-08 | Two-stage fuel gas boiler flue gas heat energy recovery system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102913941A true CN102913941A (en) | 2013-02-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2012104430495A Pending CN102913941A (en) | 2012-11-08 | 2012-11-08 | Two-stage fuel gas boiler flue gas heat energy recovery system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104235864A (en) * | 2013-06-13 | 2014-12-24 | 烟台龙源电力技术股份有限公司 | Flue gas moisture recovery system and method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19756441A1 (en) * | 1997-12-18 | 1999-06-24 | Margot Doepp | Warm air central heating system |
| JP2004333033A (en) * | 2003-05-08 | 2004-11-25 | Babcock Hitachi Kk | Heat medium circulating device and method for gas-gas heat exchanger |
| CN101398267A (en) * | 2007-09-28 | 2009-04-01 | 杨本洛 | Internal circulation composite phase change heat exchanger |
| CN202328303U (en) * | 2011-11-17 | 2012-07-11 | 山东天力干燥股份有限公司 | Waste heat recovery system for condensing anti-corrosion gas/fuel boiler |
| CN102588946A (en) * | 2012-03-19 | 2012-07-18 | 杭州哲达科技股份有限公司 | Self-balancing distributed type steam dragging method and self-balancing distributed type steam dragging system utilizing industrial circulating water waste heat |
| CN202915394U (en) * | 2012-11-08 | 2013-05-01 | 江苏双良新能源装备有限公司 | Two-section type gas boiler flue gas heat recovery system |
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2012
- 2012-11-08 CN CN2012104430495A patent/CN102913941A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19756441A1 (en) * | 1997-12-18 | 1999-06-24 | Margot Doepp | Warm air central heating system |
| JP2004333033A (en) * | 2003-05-08 | 2004-11-25 | Babcock Hitachi Kk | Heat medium circulating device and method for gas-gas heat exchanger |
| CN101398267A (en) * | 2007-09-28 | 2009-04-01 | 杨本洛 | Internal circulation composite phase change heat exchanger |
| CN202328303U (en) * | 2011-11-17 | 2012-07-11 | 山东天力干燥股份有限公司 | Waste heat recovery system for condensing anti-corrosion gas/fuel boiler |
| CN102588946A (en) * | 2012-03-19 | 2012-07-18 | 杭州哲达科技股份有限公司 | Self-balancing distributed type steam dragging method and self-balancing distributed type steam dragging system utilizing industrial circulating water waste heat |
| CN202915394U (en) * | 2012-11-08 | 2013-05-01 | 江苏双良新能源装备有限公司 | Two-section type gas boiler flue gas heat recovery system |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104235864A (en) * | 2013-06-13 | 2014-12-24 | 烟台龙源电力技术股份有限公司 | Flue gas moisture recovery system and method |
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Application publication date: 20130206 |