CN102563874A - Internal circulation waste heat recycling device of heat conducting oil furnace with temperature regulator - Google Patents
Internal circulation waste heat recycling device of heat conducting oil furnace with temperature regulator Download PDFInfo
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- CN102563874A CN102563874A CN2012100085922A CN201210008592A CN102563874A CN 102563874 A CN102563874 A CN 102563874A CN 2012100085922 A CN2012100085922 A CN 2012100085922A CN 201210008592 A CN201210008592 A CN 201210008592A CN 102563874 A CN102563874 A CN 102563874A
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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 an internal circulation waste heat recycling device of a conducting oil furnace with a temperature regulator. The internal circulation waste heat recycling device comprises the heat conducting oil furnace and a flue, a high-temperature air preheater is arranged in the flue, and the temperature regulator is disposed outside the flue. An internal circulation heat conducting oil loop is adopted, cold air from an air blower is heated to form hot air via the temperature regulator, the hot air is delivered to the high-temperature air preheater so that waste heat of flue gas continues to be recycled, and cooled heat conducting oil returns to a heat conducting oil circulating system. By the aid of the internal circulation waste heat recycling device, the heat conducting oil furnace runs economically while high heat efficiency is realized, low-temperature corrosion of the air preheater in the flue can be effectively avoided, the problem that waste heat of the heat conducting oil furnace is difficult to be recycled is solved, and purposes of saving energy, reducing emission and simplifying procedures are achieved.
Description
Technical field
The present invention relates to a kind of heat-conducting oil furnace internal circulation residual heat retracting device, belong to residual heat from boiler fume and reclaim the field with thermosistor.
Background technology
Heat-conducting oil furnace be a kind of be that conduction oil is the special boiler of working media with organic heat carrier; The high-temperature flue gas heating conduction oil that produces through fuel combustion, for hot equipment required heat to be provided, and the flue gas that produces after the fuel combustion is when chimney is discharged after the conduction oil rising temperature; Temperature is generally about 170 ℃; That have even up to 300 ℃, both wasted heat, again environment has been caused thermal pollution.
Heat-conducting oil furnace does not carry out waste heat recovery mostly or only increases air preheater recovery section fume afterheat.The part flow setting waste-heat recovery device of carrying vapour generator such as heat pipe boiler etc., a kind of heat-conducting oil furnace using waste heat from tail gas retracting device structural representation (like Fig. 1) of carrying vapour generator is provided: comprising: body of heater 1, flue 2 like ZL200420027889.4; Steam generator 3, steam generator shell 31, steam generator drum 32; Steam generator heat-transfer pipe 33, steam generator tube sheet 34, air preheater 4; The air inlet pipe 41 of air preheater, air-introduced machine 5, chimney 6.This technology can make the heat-conducting oil furnace exhaust gas temperature be reduced to about 160 ℃, and reclaims a certain amount of steam.
The device flow process that ZL200710046604.X provides a kind of residual heat from boiler fume to reclaim, this technology main application fields is a station boiler.This technology example structure sketch map is as shown in Figure 2: comprise self-con-tained unit 1, internally piloted valve 2, drum 3, upper hose 4; Down-comer 5, mesolow evaporimeter 6, economizer 7, feed pump 8; Air preheater 9, flue 10, phase-change heat-exchanger hypomere 11, wall temperature tester 12; Phase-change heat-exchanger epimere 13, air channel 14, drum safety valve 15, drum liquid level gauge 16.This technology is compared with ZL200420027889.4, and exhaust gas temperature can be reduced to about 130 ℃, improves boiler thermal output 1%～2%.
But; If the heat-conducting oil furnace applying unit need not the steam that the waste heat recovery flow process produces, such technological use promptly receives very big restriction, then only can increase air preheater recovery section fume afterheat; For avoiding the cold end corrosion of air preheater; The exhaust gas temperature of boiler is common more than 160 ℃, and the overall thermal efficient of boiler is still lower, does not meet energy-conservation and environmental requirement.
Therefore how rationally to recycle the fume afterheat of heat-conducting oil furnace and simplify flow process, reduce exhaust gas temperature, avoid cold end corrosion, improve the focus that the thermal efficiency becomes this area research.
Summary of the invention
The object of the invention provides a kind of heat-conducting oil furnace internal circulation residual heat retracting device with thermosistor for solving the shortcoming that above-mentioned prior art exists, and to realize the high efficiente callback of heat-conducting oil furnace fume afterheat, reaches energy saving purposes.
The objective of the invention is to realize through following measure:
The heat-conducting oil furnace internal circulation residual heat retracting device of band thermosistor; This heat-conducting oil furnace comprises body of heater 1, flue 9 and temperature end conduction oil closed circuit; Be provided with hot oil pump 7 and gs-oil separator 5 in the temperature end conduction oil closed circuit; It is characterized in that: this retracting device comprises high temperature air preheater 13, the outer thermosistor 10 of flue that is arranged in the flue 9, and connecting line; Wherein, Inner circulating tube line 12 is by drawing between hot oil pump 7 outlet and the heat-conducting oil furnace 1 heat conductive oil inlet end, or drawn by the heat-conducting oil furnace 1 conduction oil port of export, through thermosistor 10, in loop back oil pipeline 14; Be back to gs-oil separator 5 or hot oil pump 7 inlet line, closed circuit in forming; In addition; Be provided with air blast before the thermosistor; The air of discharging from air blast is after thermosistor 10 heats up (being higher than the flue gas acid dew point temperature); Get into high temperature air preheater 13 again and utilize flue gas to heat up, reclaim fume afterheat, the high temperature air after 13 heating of high temperature air preheater is sent into heat-conducting oil furnace and is used as the heat-conducting oil furnace combustion air.
Wherein heat-conducting oil furnace 1 comprises heating source 2, and heating source 2 adopts coal, oil or gas to act as a fuel.
Said temperature end conduction oil closed circuit comprises hot oil pump 7, with hot equipment 3, gs-oil separator 5, filter 6 and connecting line; The hot oil pump 7 that conduction oil connects through pipeline successively, body of heater 1, with hot equipment 3, gs-oil separator 5, filter 6; Flow back to hot oil pump 7, form closed cycle.Conduction oil gets into hot oil pump 7 after with hot equipment 3, gs-oil separator 5, filter 6 again and is connected to form closed cycle through pipe-line system after hot oil pump 7 pressurization back gets into heat-conducting oil furnace 1 and absorbs the heat of fuel combustion generation.
Said thermosistor 10 adopts the indirect heat exchange mode with conduction oil, and the entrance point of tube side or shell side is connected with conduction oil inner circulating tube line 12, loops back oil pipeline 14 in the port of export and the conduction oil and is connected; The entrance point of shell side or tube side links to each other with air blast (11) air outlet, and the port of export links to each other with the import of high temperature air preheater (13).
Closed circuit is following in the conduction oil of the present invention: the high temperature heat conductive oil after the heating of heat-conducting oil furnace 1 outlet; Get into thermosistor 10 through conduction oil inner circulating tube line 12; Conduction oil inner circulating tube line 12 outlets are between hot oil pump 7 outlets and the feed line with hot equipment 3; After reducing the conduction oil temperature, get back to gs-oil separator 5 or hot oil pump 7 inlet line through looping back oil pipeline 14 in the conduction oil, after the outer circulation conduction oil mixes; After hot oil pump 7 is sent into heat-conducting oil furnace 1 heating through the pipe-line system connection, again high temperature heat conductive oil is seen off, thereby formed closed circuit in the conduction oil.
High temperature air preheater 13 of the present invention adopts the indirect heat exchange mode with flue gas, and the hot-air 15 after 13 heating of high temperature air preheater is sent into heat-conducting oil furnace and used as combustion air.
The heat exchanger tube of high temperature air preheater 13 of the present invention can adopt tubulation, finned tube, coiled pipe or spiral grooved tube.
Thermosistor 10 among the present invention adopts the indirect heat exchange mode, can be the heat exchanger of shell-and-tube heat exchanger, plate type heat exchanger or other patterns.
The cold air that thermosistor 10 among the present invention is sent air blast here is heated above the flue gas acid dew point temperature, sends into anticorrosion air preheater 13 again and reclaims the heat-conducting oil furnace fume afterheat, and thermosistor 10 is equivalent to be arranged on the outer air preheater of flue.
Be provided with conventional flue gas discharge temperature regulation device; Means such as aperture through control thermosistor 10 control valves; Can make the exhaust gas temperature of flue outlet be reduced to the flue gas acid dew point temperature that only is higher than anticorrosion air preheater 13 walls, avoid reaching the purpose of utilizing fume waste heat to greatest extent under the prerequisite of dewfall; Make heat-conducting oil furnace ability economy, high thermal efficiency operation, reach energy saving purposes.
The present invention compares prior art and has following advantage:
1, this device closed circuit in original heat-conducting oil furnace system has designed a cover conduction oil; The conduction oil of closed circuit is through the thermosistor preheated air in utilizing; Be heated above acid dew-point temperature; Send into high temperature air preheater 13 again and reclaim fume afterheat in the flue, both avoided the cold end corrosion of high temperature air preheater, made full use of flue residue heat again.In addition, the air of preheating is sent into heat-conducting oil furnace again as combustion air, help the abundant burning of fuel, the difficult problem of waste heat recovery when having solved the heat-conducting oil furnace applying unit and need not steam that the waste heat recovery flow process produces.
2, retracting device of the present invention is reasonable in design, and the waste heat recovery rate is high, can use with existing residual heat of heat-conducting oil furnace recovery technology combination.
3, retracting device of the present invention, behind the recovery waste heat, smog discharge temperature meets energy-conservation and environmental requirement about 130 ℃.
Description of drawings
Fig. 1 is the heat-conducting oil furnace using waste heat from tail gas retracting device structural representation of the carrying vapour generator of prior art;
Fig. 1: 1-body of heater, 2-flue, 3-steam generator, 31-steam generator shell, 32-steam generator drum, 33-steam generator heat-transfer pipe, 34-steam generator tube sheet, 4-air preheater, the air inlet pipe of 41-air preheater, 5-air-introduced machine, 6-chimney.
Fig. 2 is the device flow chart that the residual heat from boiler fume of prior art reclaims;
Among Fig. 2: 1-self-con-tained unit, 2-internally piloted valve, 3-drum, 4-upper hose; The 5-down-comer, 6-mesolow evaporimeter, 7-economizer, 8-feed pump; The 9-air preheater, 10-flue, 11-phase-change heat-exchanger hypomere, 12-wall temperature tester; 13-phase-change heat-exchanger epimere, 14-air channel, 15-drum safety valve, 16-drum liquid level gauge.
Fig. 3 is the heat-conducting oil furnace internal circulation residual heat high efficiente callback apparatus structure schematic flow sheet of band thermosistor of the present invention.
Among Fig. 3,1-heat-conducting oil furnace, 2-heating source, 3-are used hot equipment; 4-high-order expansion slot, 5-gs-oil separator, 6-filter, 7-hot oil pump; 8-low level oil storage tank, 9-flue, 10-thermosistor, 11-air blast; 12-inner circulating tube line, 13-high temperature air preheater loops back oil pipeline, 15-hot-air in the 14-.
The specific embodiment
Below in conjunction with accompanying drawing and specific embodiment the present invention is described in further detail.
Embodiment 1:
As shown in Figure 3, the schematic flow sheet of the heat-conducting oil furnace internal circulation residual heat retracting device of band thermosistor of the present invention.This heat-conducting oil furnace comprises body of heater 1, flue 9 and temperature end conduction oil closed circuit, is provided with hot oil pump 7 and gs-oil separator 5 in the temperature end conduction oil closed circuit.This retracting device comprises high temperature air preheater 13, the outer thermosistor 10 of flue that is arranged in the flue 9, and connecting line; Wherein, Inner circulating tube line 12 is by drawing between hot oil pump 7 outlet and the heat-conducting oil furnace 1 heat conductive oil inlet end, or drawn by the heat-conducting oil furnace 1 conduction oil port of export, through thermosistor 10, in loop back oil pipeline 14; Be back to gs-oil separator 5 or hot oil pump 7 inlet line, closed circuit in forming; The air of discharging from air blast is after thermosistor 10 heats up (being higher than the flue gas acid dew point temperature); Getting into high temperature air preheater 13 again utilizes flue gas to heat up; Reclaim fume afterheat, the high temperature air after 13 heating of high temperature air preheater is sent into heat-conducting oil furnace and is used as the heat-conducting oil furnace combustion air.
Wherein heat-conducting oil furnace 1 comprises heating source 2, and heating source 2 adopts coal to act as a fuel.
Said temperature end conduction oil closed circuit comprises hot oil pump 7, with hot equipment 3, gs-oil separator 5, filter 6 and connecting line; The hot oil pump 7 that conduction oil connects through pipeline successively, body of heater 1, with hot equipment 3, gs-oil separator 5, filter 6; Flow back to hot oil pump 7, form closed cycle.Conduction oil gets into hot oil pump 7 after with hot equipment 3, gs-oil separator 5, filter 6 again and is connected to form closed cycle through pipe-line system after hot oil pump 7 pressurization back gets into heat-conducting oil furnace 1 and absorbs the heat of fuel combustion generation.
High temperature heat conductive oil after the heating of heat-conducting oil furnace 1 outlet; Get into thermosistor 10 through conduction oil inner circulating tube line 12; Conduction oil inner circulating tube line 12 outlets are between hot oil pump 7 outlets and the feed line with hot equipment 3; After reducing the conduction oil temperature, get back to gs-oil separator 5 or hot oil pump 7 inlet line through looping back oil pipeline 14 in the conduction oil, after the outer circulation conduction oil mixes; After hot oil pump 7 is sent into heat-conducting oil furnace 1 heating through the pipe-line system connection, again high temperature heat conductive oil is seen off, thereby formed closed circuit in the conduction oil.
Thermosistor 10 adopts the indirect heat exchange mode, can be the heat exchanger of shell-and-tube heat exchanger, plate type heat exchanger or other patterns.
High temperature air preheater 13 adopts the indirect heat exchange mode with flue gas, and the hot-air 15 after 13 heating of high temperature air preheater is sent into heat-conducting oil furnace and used as combustion air.The heat exchanger tube of high temperature air preheater 13 adopts finned tube.
The cold air that thermosistor 10 among the present invention is sent air blast here is heated above the flue gas acid dew point temperature, sends into high temperature air preheater 13 again and reclaims the heat-conducting oil furnace fume afterheat, and thermosistor 10 is equivalent to be arranged on the outer air preheater of flue.
Be provided with conventional flue gas discharge temperature adjusting device; Through regulating the aperture of thermosistor 10 control valves, the flow of the conduction oil of control thermosistor 10 can make the exhaust gas temperature of flue outlet be reduced to the flue gas acid dew point temperature that only is higher than high temperature air preheater 13 walls; Avoiding under the prerequisite of dewfall; Reach the purpose of utilizing fume waste heat to greatest extent, make heat-conducting oil furnace ability economy, high thermal efficiency operation, reach energy saving purposes.
Embodiment 2:
Another embodiment of the invention is: conduction oil inner circulating tube line 12 outlets are between hot oil pump 7 outlets and heat-conducting oil furnace 1 feed line, and all the other performances are with embodiment 1.
Though the present invention with preferred embodiment openly as above, they are not to be used for limiting the present invention, anyly are familiar with this art, in spirit that does not break away from the present invention and scope, when doing various variations or retouching, belong to the present invention's protection domain equally certainly.For example, the present invention can utilize the conduction oil recovery waste heat, preheated air, and conduction oil forms closed cycle, can realize the high efficiente callback of fume afterheat equally.Therefore protection scope of the present invention should with the application claim was defined is as the criterion.
Claims (6)
1. be with the heat-conducting oil furnace internal circulation residual heat retracting device of thermosistor; This heat-conducting oil furnace comprises body of heater (1), flue (9) and temperature end conduction oil closed circuit; Be provided with hot oil pump (7) and gs-oil separator (5) in the temperature end conduction oil closed circuit; It is characterized in that: this retracting device comprises high temperature air preheater (13), the outer thermosistor (10) of flue that is arranged in the flue (9), and connecting line; Wherein, Inner circulating tube line (12) is by drawing between hot oil pump (7) outlet and heat-conducting oil furnace (1) the heat conductive oil inlet end; Or draw by heat-conducting oil furnace (1) the conduction oil port of export; Successively through thermosistor (10), in loop back oil pipeline (14), be back to gs-oil separator (5) or hot oil pump (7) inlet line, closed circuit in forming; In addition, be provided with air blast (11) before the thermosistor, the air of discharging from air blast (11) gets into high temperature air preheater (13) through thermosistor (10), sends into heat-conducting oil furnace again.
2. the heat-conducting oil furnace internal circulation residual heat retracting device of band thermosistor according to claim 1 is characterized in that: wherein heat-conducting oil furnace (1) comprises heating source (2), and heating source (2) adopts coal, oil or gas to act as a fuel.
3. the heat-conducting oil furnace internal circulation residual heat retracting device of band thermosistor according to claim 1; It is characterized in that: said temperature end conduction oil closed circuit comprises hot oil pump (7), with hot equipment (3), gs-oil separator (5), filter (6) and connecting line; The hot oil pump (7) that conduction oil connects through pipeline successively, body of heater (1), with hot equipment (3), gs-oil separator (5), filter (6); Flow back to hot oil pump (7), form closed cycle.
4. according to the heat-conducting oil furnace internal circulation residual heat retracting device of claim 1,2 or 3 described band thermosistors, it is characterized in that: said thermosistor (10) is shell-and-tube heat exchanger, plate type heat exchanger or other forms of heat exchanger.
5. the heat-conducting oil furnace internal circulation residual heat retracting device of band thermosistor according to claim 4; It is characterized in that: said thermosistor (10) adopts shell-and-tube heat exchanger, the entrance point of tube side or shell side and the port of export respectively with loop back oil pipeline (14) in conduction oil inner circulating tube line (12) reaches and be connected; The entrance point of shell side or tube side links to each other with air blast (11) air outlet, and the port of export links to each other with the import of high temperature air preheater (13).
6. according to claim 1,2 or 3 described heat-conducting oil furnace internal circulation residual heat retracting devices, it is characterized in that: the heat exchanger tube of said high temperature air preheater (13) adopts tubulation, finned tube, coiled pipe or spiral grooved tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100085922A CN102563874A (en) | 2012-01-12 | 2012-01-12 | Internal circulation waste heat recycling device of heat conducting oil furnace with temperature regulator |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012100085922A CN102563874A (en) | 2012-01-12 | 2012-01-12 | Internal circulation waste heat recycling device of heat conducting oil furnace with temperature regulator |
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| CN102563874A true CN102563874A (en) | 2012-07-11 |
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| CN2012100085922A Pending CN102563874A (en) | 2012-01-12 | 2012-01-12 | Internal circulation waste heat recycling device of heat conducting oil furnace with temperature regulator |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103225962A (en) * | 2013-04-25 | 2013-07-31 | 安丰宝 | Antiseptic air preheater device used for kilns |
| CN113237074A (en) * | 2021-04-29 | 2021-08-10 | 中建材创新科技研究院有限公司 | Heating system and denitration method thereof |
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| US6460490B1 (en) * | 2001-12-20 | 2002-10-08 | The United States Of America As Represented By The Secretary Of The Navy | Flow control system for a forced recirculation boiler |
| CN101976987A (en) * | 2010-10-20 | 2011-02-16 | 王海波 | Industrial afterheat semiconductor power generation method and device using heat carrier as heating medium |
| CN201837064U (en) * | 2010-09-14 | 2011-05-18 | 王海波 | Highly-efficiently waste heat recovery system with organic heat carrier boiler |
| CN201866787U (en) * | 2010-11-19 | 2011-06-15 | 王海波 | Heat transfer oil furnace waste heat high-efficiency recycle device with phase-change heat exchanger |
| CN202501626U (en) * | 2012-01-12 | 2012-10-24 | 苏州工业园区瑞柯徕姆环保科技有限公司 | Temperature regulator-equipped internal circulation waste heat-recycling device for heat conducting oil furnace |
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2012
- 2012-01-12 CN CN2012100085922A patent/CN102563874A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US6460490B1 (en) * | 2001-12-20 | 2002-10-08 | The United States Of America As Represented By The Secretary Of The Navy | Flow control system for a forced recirculation boiler |
| CN201837064U (en) * | 2010-09-14 | 2011-05-18 | 王海波 | Highly-efficiently waste heat recovery system with organic heat carrier boiler |
| CN101976987A (en) * | 2010-10-20 | 2011-02-16 | 王海波 | Industrial afterheat semiconductor power generation method and device using heat carrier as heating medium |
| CN201866787U (en) * | 2010-11-19 | 2011-06-15 | 王海波 | Heat transfer oil furnace waste heat high-efficiency recycle device with phase-change heat exchanger |
| CN202501626U (en) * | 2012-01-12 | 2012-10-24 | 苏州工业园区瑞柯徕姆环保科技有限公司 | Temperature regulator-equipped internal circulation waste heat-recycling device for heat conducting oil furnace |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103225962A (en) * | 2013-04-25 | 2013-07-31 | 安丰宝 | Antiseptic air preheater device used for kilns |
| CN113237074A (en) * | 2021-04-29 | 2021-08-10 | 中建材创新科技研究院有限公司 | Heating system and denitration method thereof |
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Application publication date: 20120711 |