CN104197306A - Boiler fuel gas waste heat recovery system - Google Patents
Boiler fuel gas waste heat recovery system Download PDFInfo
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- CN104197306A CN104197306A CN201410441959.9A CN201410441959A CN104197306A CN 104197306 A CN104197306 A CN 104197306A CN 201410441959 A CN201410441959 A CN 201410441959A CN 104197306 A CN104197306 A CN 104197306A
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- boiler
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- heat exchanger
- flue gas
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Abstract
A boiler fuel gas waste heat recovery device comprises a boiler, a boiler rear smoke channel, a flue gas heat exchanger, a secondary heat exchanger and a PLC system. The device is characterized in that the flue gas heat exchanger is installed in the boiler rear smoke channel, the heat of flue gas is recovered through heat exchanging media, and the recovered heat can heat water, air or other media according to requirements of users for industrial use or daily use. In this way, fuel can be saved, the energy utilization rate can be increased, the temperature of discharged flue gas can be reduced, thermal pollution can be reduced, and the environment can be protected.
Description
Technical field
The present invention relates to a kind of heat recovery device, specifically, relate to a kind of residual heat from boiler fume recycle device.
Background technology
China's industrial equipment falls behind, and energy utilization rate is low.As industries such as chemical industry, petrochemical industry, building materials, light textile, metallurgy, power, papermaking, electronic apparatus, a large amount of heat energy is directly emptying aborning, has not only wasted energy but also contaminated environment.
Aspect thermal power energy consumption high, pollute the fume emission that high one of the main reasons is exactly boiler, boiler exhaust gas problem is the direct pollution of flue gas pollutant on the one hand, is exactly exhaust gas temperature on the other hand.Exhaust gas temperature is generally 150 ℃ of-200 ℃ of left and right, the residual heat resources that potentiality are very large, and boiler be generally after simple dust removal process just directly discharged to atmosphere, both wasted mass energy, caused again serious environmental thermal pollution, aggravation greenhouse effects.
In country, vigorously advocate under the overall situation of " energy-saving and emission-reduction " using energy source policy, raising boiler efficiency, minimizing boiler blow-off amount just become extremely important.
Summary of the invention
In order to solve the problem of above-mentioned proposition, native system installs a kind of boiler smoke-gas residual-heat recovering device additional in boiler tail flue gas exit, this device reclaims flue gas heat by heat transferring medium, the heat reclaiming is according to user's demand heating water, air or other medium, can supplement heating winter, domestic hot-water is provided summer.So both can fuel saving, improve energy utilization rate, reduce production costs, can reduce again the flue-gas temperature of discharge, reduce thermal pollution, protection of the environment.
the technical solution adopted for the present invention to solve the technical problems is:
A kind of residual heat from boiler fume recycle device, comprise: boiler, boiler back end ductwork, flue gas heat-exchange unit, secondary heat exchanger, PLC control module, described flue gas heat-exchange unit is arranged in boiler back end ductwork, described flue can be vertical gas pass, also can be horizontal flue, heat exchanger appearance and size is respective change thereupon; Described flue sectional area is installed area change before than heat exchanger, avoids adding the resistance forming in flue after heat exchanger; The employing of described heat exchanger finned tube, finned tube has adopted anti-corrosion material, extends its service life.
In described heat exchanger tube, heat transferring medium can be water, heating oil or other media, seal for pipe joints, and pipeline stage casing arranges a circulating pump, and WATER AS FLOW MEDIUM can be circulated in two heat exchangers.
This device utilizes heat transferring medium that flue gas heat is reclaimed, and the heat of recovery by secondary heat exchanger heating water, air or other medium, industrial can be used to heat demineralized water according to user's demand, and heating boiler combustion air improves wind pushing temperature; In lifely can winter supplement heating, domestic hot-water is provided summer.
This device adopts PLC control mode, heat exchanger control module is independent of boiler control system, but by boiler operatiopn personnel unified monitoring, indoor in centralized Control, complete the processing to the supervision of institute's transformation project accidental conditions and adjustment and emergency episode, on the spot can unmanned.
In PLC control system, flue circulating pump, electric butterfly valve control signal and burning boiler internal pressure, temperature signal is linkage interlocked, guarantee pressure in the burner hearth dynamic equilibrium, guarantee equipment security of operation.
The increase of apparatus of the present invention do not affect or replacing system in original capital equipment, constant or fuel consumption is identical in boiler output, and do not produce under the prerequisite of cold end corrosion, strictly control the flue-gas temperature after heat exchange.
The invention has the beneficial effects as follows, by this device, flue gas heat is reclaimed, so both can fuel saving, improve energy utilization rate, reduce production costs, can reduce again the flue-gas temperature of discharge, reduce thermal pollution, protection of the environment.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the present invention is further described.
It in figure, is apparatus of the present invention schematic diagram.
In figure: 1. flue, 2. flue gas heat-exchange unit, 3. secondary heat exchanger, 4. heat exchange pipeline, 5. circulating pump.
The specific embodiment
Apparatus of the present invention comprise: boiler, boiler back end ductwork 1, flue gas heat-exchange unit 2, secondary heat exchanger 3, PLC control system, described flue gas heat-exchange unit 2 is arranged in boiler back end ductwork 1, described flue 1 can be vertical gas pass, also can be horizontal flue, heat exchanger appearance and size is respective change thereupon; Described flue 1 sectional area is installed area change before than heat exchanger, avoids adding the resistance forming in flue after heat exchanger; Described heat exchanger 2 has adopted finned tube, and finned tube has adopted anti-corrosion material, extends its service life.
In described heat exchanger tube 4, heat transferring medium can be water, conduction oil or other media, seal for pipe joints, and pipeline stage casing arranges a circulating pump 5, and WATER AS FLOW MEDIUM can be circulated in two heat exchangers.
This device utilizes heat transferring medium that flue gas heat is reclaimed, and the heat of recovery by secondary heat exchanger 3 heating waters, air or other medium, industrial can be used to heat demineralized water according to user's demand, and heating boiler combustion air improves wind pushing temperature; In lifely can winter supplement heating, domestic hot-water is provided summer.
This device adopts PLC control mode, heat exchanger control module is independent of boiler control system, but by boiler operatiopn personnel unified monitoring, indoor in centralized Control, complete the processing to the supervision of institute's transformation project accidental conditions and adjustment and emergency episode, on the spot can unmanned.
In PLC control system, flue circulating pump 5, electric butterfly valve control signal and burning boiler internal pressure, temperature signal is linkage interlocked, guarantee pressure in the burner hearth dynamic equilibrium, guarantee equipment security of operation.
Claims (3)
1. a residual heat from boiler fume recycle device, comprise boiler, boiler back end ductwork, flue gas heat-exchange unit, secondary heat exchanger, PLC control system, it is characterized in that: described flue gas heat-exchange unit is arranged in boiler back end ductwork, described heat exchanger has adopted finned tube, and finned tube has adopted anti-corrosion material.
2. a kind of residual heat from boiler fume recycle device according to claim 1, is characterized in that: described heat exchange pipeline sealing, in described pipeline, heat transferring medium can be water, conduction oil or other media.
3. a kind of residual heat from boiler fume recycle device according to claim 1, it is characterized in that: this device adopts PLC control system, described PLC control system is independent of boiler control system, in system, heat exchanger control signal and boiler control is linkage interlocked, guarantees security of operation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410441959.9A CN104197306A (en) | 2014-09-02 | 2014-09-02 | Boiler fuel gas waste heat recovery system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410441959.9A CN104197306A (en) | 2014-09-02 | 2014-09-02 | Boiler fuel gas waste heat recovery system |
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| CN104197306A true CN104197306A (en) | 2014-12-10 |
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| CN201410441959.9A Pending CN104197306A (en) | 2014-09-02 | 2014-09-02 | Boiler fuel gas waste heat recovery system |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104633931A (en) * | 2015-01-30 | 2015-05-20 | 宜兴市兴合树脂有限公司 | Boiler heat-conducting oil heat exchange oil supply system |
| CN108506955A (en) * | 2017-02-24 | 2018-09-07 | 爱质环保科技（上海）有限公司 | A kind of heating system using City Life Trash Power Plant fume afterheat |
| CN109853288A (en) * | 2019-03-12 | 2019-06-07 | 江苏双良低碳产业技术研究院有限公司 | A kind of energy-saving type high-temperature smoke-shock dry paper system |
| CN112944385A (en) * | 2021-04-09 | 2021-06-11 | 西安热工研究院有限公司 | Hot primary air heating system |
| CN116678007A (en) * | 2023-05-26 | 2023-09-01 | 昌吉学院 | Boiler provided with low-energy-consumption flue gas waste heat recovery device |
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| CN202630027U (en) * | 2012-06-15 | 2012-12-26 | 黄绍新 | Device for utilizing smoke waste heat of boiler of thermal generator set |
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| KR101227167B1 (en) * | 2011-04-04 | 2013-01-28 | 한국에너지기술연구원 | Boiler flue gas heat recovery system using heat pump |
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| CN104006401A (en) * | 2013-11-04 | 2014-08-27 | 成信绿集成股份有限公司 | Power station boiler smoke waste heat deep recycling and emission reducing system |
| CN204372887U (en) * | 2014-09-02 | 2015-06-03 | 叶金辉 | A kind of residual heat from boiler fume recycling system |
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| CN201819192U (en) * | 2010-10-14 | 2011-05-04 | 山东电力高等专科学校 | Two-stage serial-parallel boiler tail heat exchanger |
| KR101227167B1 (en) * | 2011-04-04 | 2013-01-28 | 한국에너지기술연구원 | Boiler flue gas heat recovery system using heat pump |
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| CN202852786U (en) * | 2012-09-21 | 2013-04-03 | 宁波和谐环保节能科技有限公司 | Waste heat boiler tail portion heat exchange face improved structure |
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| CN103375792A (en) * | 2013-08-05 | 2013-10-30 | 华北电力大学 | Engine-boiler coupled deep waste heat utilization system for air cooling unit |
| CN104006401A (en) * | 2013-11-04 | 2014-08-27 | 成信绿集成股份有限公司 | Power station boiler smoke waste heat deep recycling and emission reducing system |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104633931A (en) * | 2015-01-30 | 2015-05-20 | 宜兴市兴合树脂有限公司 | Boiler heat-conducting oil heat exchange oil supply system |
| CN108506955A (en) * | 2017-02-24 | 2018-09-07 | 爱质环保科技（上海）有限公司 | A kind of heating system using City Life Trash Power Plant fume afterheat |
| CN109853288A (en) * | 2019-03-12 | 2019-06-07 | 江苏双良低碳产业技术研究院有限公司 | A kind of energy-saving type high-temperature smoke-shock dry paper system |
| CN109853288B (en) * | 2019-03-12 | 2024-04-02 | 江苏双良低碳产业技术研究院有限公司 | Energy-saving high-temperature flue gas impact drying paper system |
| CN112944385A (en) * | 2021-04-09 | 2021-06-11 | 西安热工研究院有限公司 | Hot primary air heating system |
| CN116678007A (en) * | 2023-05-26 | 2023-09-01 | 昌吉学院 | Boiler provided with low-energy-consumption flue gas waste heat recovery device |
| CN116678007B (en) * | 2023-05-26 | 2024-03-08 | 昌吉学院 | Boiler provided with low-energy-consumption flue gas waste heat recovery device |
| CN117906161A (en) * | 2023-05-26 | 2024-04-19 | 昌吉学院 | Boiler of flue gas waste heat recovery device with forced and natural convection functions |
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Application publication date: 20141210 |