CN102322624A - System utilizing organic heat carrier furnace flue gas waste heat to produce low-pressure steam - Google Patents
System utilizing organic heat carrier furnace flue gas waste heat to produce low-pressure steam Download PDFInfo
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- CN102322624A CN102322624A CN201110247570A CN201110247570A CN102322624A CN 102322624 A CN102322624 A CN 102322624A CN 201110247570 A CN201110247570 A CN 201110247570A CN 201110247570 A CN201110247570 A CN 201110247570A CN 102322624 A CN102322624 A CN 102322624A
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- flue gas
- boiler
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- heat
- carrier furnace
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- 239000003546 flue gas Substances 0.000 title claims abstract description 42
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 41
- 239000002918 waste heat Substances 0.000 title abstract description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 77
- 238000010438 heat treatment Methods 0.000 claims abstract description 23
- 229920006395 saturated elastomer Polymers 0.000 claims abstract description 10
- 239000000779 smoke Substances 0.000 claims description 29
- 239000002699 waste material Substances 0.000 claims description 29
- 239000007789 gas Substances 0.000 abstract description 21
- 238000010521 absorption reaction Methods 0.000 abstract 2
- 239000002253 acid Substances 0.000 description 14
- 239000003517 fume Substances 0.000 description 14
- 230000007797 corrosion Effects 0.000 description 6
- 238000005260 corrosion Methods 0.000 description 6
- 238000011084 recovery Methods 0.000 description 5
- 229910001018 Cast iron Inorganic materials 0.000 description 3
- 238000002485 combustion reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 238000002207 thermal evaporation Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 235000014171 carbonated beverage Nutrition 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 235000013312 flour Nutrition 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000005338 heat storage Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 235000012771 pancakes Nutrition 0.000 description 1
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- Control Of Steam Boilers And Waste-Gas Boilers (AREA)
Abstract
The invention provides a system utilizing organic heat carrier furnace flue gas waste heat to produce low-pressure steam, which comprises an organic heat carrier furnace flue, a flue gas waste heat boiler used for producing low-pressure saturated steam, and a water supply and heating device, wherein the flue gas waste heat boiler is arranged in the organic heat carrier furnace flue, the water supply and heating device comprises a heat absorption section and a heat release section which are connected, the heat absorption section is arranged in the organic heat carrier furnace flue and is positioned behind the flue gas waste heat boiler, the heat release section is provided with a water inlet pipeline and a water outlet pipeline, the flue gas waste heat boiler is provided with a water supply pipe, and the water outlet pipeline is communicated with the water supply pipe. With the system, the temperature of exhaust gas is reduced to the maximum extent, and the organic heat carrier furnace flue gas reclaiming efficiency is improved.
Description
Technical field
The present invention relates to the heat recovery of Industrial Boiler organic heat carrier kiln gas, particularly a kind of system that utilizes the organic heat carrier furnace flue gas exhaust heat to produce low-pressure steam.
Background technology
Start from the U.S. thirties 20th century of organic heat carrier furnace, by the biochemical company in U.S. road initiative, custom is called gives birth to stove, and progressively forms series.It adopts the intermediate carrier of organic heat carrier as transporting heat energy; With the heat energy that fuel combustion produces, give organic heat carrier thermal energy transfer through the heating furnace heating surface, make heat carrier be heated to certain temperature; With oil circulating pump it is sent into the hot equipment of using then; Low temperature organic heat carrier behind the release heat energy returns in the heating furnace and is heated again, and so reciprocation cycle can reach the purpose of organic thermal carrier heating furnace to extraneous heat supply; Because of mostly organic heat carrier is conduction oil, so be called heat-conducting oil furnace again.Owing to extraneous general about 250 ℃ or higher, make the exhaust gas temperature of organic heat carrier furnace often be higher than more than 300 ℃ with heat.
The scheme of this thermal waste of traditional solution (to the boiler of high smoke evacuation) is to install a waste heat boiler additional, and the fume afterheat of recovery is in order to produce low-pressure saturated steam, and this waste heat boiler structure generally is divided into following two kinds:
A kind ofly being used for the occasion that exhaust gas volumn is big, flue-gas temperature is high, also is structure---the double-drum boiler that the Industrial Boiler heat convection is adopted, and it adopts the lower drum arrangement; Connect with bend pipe between last lower drum, bend pipe is as main heat convection face, in order to arrange the convenience of heating surface; The form of two collection casees about sometimes can changing lower drum into, number of tubes is very big, the down-comer that is not heated; Pipe row nature by being heated weak forms down-comer, supplies water to other tedge that is heated stronger row, and its exhaust gas temperature is still very high; The back generally is added with cast iron type economizer heated feed water and reduces exhaust gas temperature, and the exhaust gas temperature of economizer is generally about 150 ℃, still has the energy saving space the flue gas acid dew point temperature with respect to 80～90 ℃; But reveal corrosion for fear of economizer acid, the directly discharging of having to.
Another kind of structure is a multitubular boiler, and multitubular boiler is exactly that flue gas flows through in fire tube or smoke pipe, to fire tube or the outer water of smoke pipe, vapour or steam water interface heating.Multitubular boiler is claimed smaller hard flour pancake boiler again.Basic structure is the housing (appellation " flue ") of installing little cylinder, pipe (appellation " fire tube ") or other shapes in large cylinder (shell); Isolated and the formation chuck of fire tube and shell; Hold water in the chuck; And fire tube and flue are useed combustion chamber and flue as, hold flame or flue gas, and the heat that burning produces or flue gas brings is passed to water through the fire tube wall.Advantage is that water capacity is big, and heat storage capacity is big, and structure, installation and operation are all fairly simple.Shortcoming is that evaporation intensity is not high, and the steam pressure of generation is low, and shell and internals directly are heated, the condition of work variation, and shell intensity is weakened because of various perforates, the condition of work variation.The evaporating heating surface mainly boiler in being arranged in drum is called shell boiler and claims multitubular boiler again, is characterized in that flue gas flows and carbonated drink is boiler mobile outside pipe in pipe.Its exhaust gas temperature is the same very high with two drum water pipe fume afterheat stoves, and the back also can install the cast iron type economizer additional and reduce exhaust gas temperature.
The fume afterheat stove of tradition organic heat carrier furnace is owing to self structure and system's reason, and flue gas is through after these energy-saving equipment heat exchange, and exhaust gas temperature is still very high; These flue gases far above the flue gas acid dew point temperature are directly drained, and make the not thorough of reducing energy consumption, cause very big waste.
Summary of the invention
Technical problem to be solved by this invention provides a kind of system that utilizes the organic heat carrier furnace flue gas exhaust heat to produce low-pressure steam, and this system has farthest reduced exhaust gas temperature, has improved the efficient of flue gas waste heat recovery.
The system that utilizes the organic heat carrier furnace flue gas exhaust heat to produce low-pressure steam of the present invention; Comprise the organic heat carrier furnace flue, be used to produce the smoke and waste steam boiler of low-pressure saturated steam and give hot-water heating system; Said smoke and waste steam boiler is located in the organic heat carrier furnace flue; Saidly comprise continuous endotherm section and heat release section to hot-water heating system, said endotherm section is located in the organic heat carrier furnace flue and is positioned at after the said smoke and waste steam boiler, and said heat release section is provided with an inlet channel and outlet conduit; Said smoke and waste steam boiler is provided with feed pipe, and said outlet conduit is connected with said feed pipe.
Preferably, said inlet channel links to each other with first outlet of triple valve, and second outlet of said triple valve is connected through bypass duct with said feed pipe, and the inlet of said triple valve links to each other with the water source.
Further, said endotherm section is provided with temperature measurer, and said temperature measurer links to each other with a self-con-tained unit respectively with triple valve.
Preferably, said smoke and waste steam boiler is double-drum boiler or multitubular boiler.
Preferably, be provided with the working-medium water pipeline in the said endotherm section, said heat release section is a shell-and-tube heat exchanger; Comprise housing, be positioned at the tube bank of housing; Said working-medium water pipeline and said housing are connected, and an end of said tube bank is a feed-water intake, and the other end of said tube bank is to water out; Said feed-water intake is connected through inlet channel with first outlet of triple valve, and the said water out of giving is connected through outlet conduit with feed pipe.
Further, said working-medium water pipeline is Influences of Structure of Spiral Finned Tube or H type extended surface tube structure.
The system that utilizes fume afterheat to produce low-pressure steam of the present invention; Utilize and cooperate for hot-water heating system with smoke and waste steam boiler; Under the situation that does not influence boiler output; Reduce exhaust gas temperature, the waste heat that reclaims in the flue gas is used to produce low-pressure saturated steam, guarantees that simultaneously equipment of itself does not receive flue gas acid to reveal the influence of corrosion.The system that utilizes fume afterheat to produce low-pressure steam of the present invention, not only existing organic heat carrier furnace is equally applicable to other high Industrial Stoves of exhaust gas temperature.
Description of drawings
Fig. 1 produces the sketch map of the system of low-pressure steam for the present invention utilizes the organic heat carrier furnace flue gas exhaust heat.
The specific embodiment
As shown in Figure 1, the system that utilizes the organic heat carrier furnace flue gas exhaust heat to produce low-pressure steam of the present invention comprises the organic heat carrier furnace flue; Be used to produce the smoke and waste steam boiler 1 of low-pressure saturated steam and give hot-water heating system; Smoke and waste steam boiler 1 is located in the organic heat carrier furnace flue, comprises continuous endotherm section 2 and heat release section 3 to hot-water heating system, and endotherm section 2 is located in the organic heat carrier furnace flue and is positioned at after the smoke and waste steam boiler 1; Heat release section 3 is positioned at outside the organic heat carrier furnace flue; Heat release section 3 is provided with an inlet channel 4 and outlet conduit 5, and smoke and waste steam boiler 1 is provided with feed pipe 10, and outlet conduit 5 is connected with feed pipe 10.
As shown in Figure 1, inlet channel 4 links to each other with first outlet of triple valve 7, and second outlet of triple valve 7 is connected through bypass duct 8 with feed pipe 10, and the inlet of triple valve 7 links to each other with the water source.Endotherm section 2 is provided with temperature measurer 6; Inlet channel 4 links to each other with first valve port of triple valve 7; Second valve port of triple valve 7 links to each other with an end of bypass duct 8; The other end of bypass duct 8 is connected with smoke and waste steam boiler 1, and the 3rd valve port of triple valve 7 links to each other with water tank, and temperature measurer 6 links to each other with a self-con-tained unit 9 respectively with triple valve 7.
Wherein, smoke and waste steam boiler 1 can be described double-drum boiler or multitubular boiler in the background technology, and the inside is furnished with annexes such as feedwater, steam dehumidifying, platoon or the like device and safety valve, water level meter.
Wherein, be provided with the working-medium water pipeline in the endotherm section 2, heat release section 3 is a shell-and-tube heat exchanger; Comprise housing, be positioned at the tube bank of housing, working-medium water pipeline and housing are connected, and an end of tube bank is a feed-water intake 11; The other end of tube bank is to water out 12; Feed-water intake 11 is connected through inlet channel 4 with first outlet of triple valve 7, is connected for water out 12 through outlet conduit 5 with feed pipe 10, and the working-medium water pipeline is Influences of Structure of Spiral Finned Tube or H type extended surface tube structure.
The high-temperature flue gas of industry heat conducting oil boiler and the boiler water in the smoke and waste steam boiler 1 carry out heat convection, and the heat transferred boiler water, boiler water receives thermal evaporation generation low-pressure saturated steam to supply the user to use.Through the high-temperature flue gas behind the smoke and waste steam boiler, exhaust gas temperature is still higher, for fear of waste; Behind smoke and waste steam boiler, install endotherm section 2 additional; Endotherm section 2 further absorbs the flue gas heat of coming out from smoke and waste steam boiler and passes to the working medium water in the working-medium water pipeline, and working medium water receives thermal evaporation to produce high-temperature steam, and high-temperature steam rises in the working-medium water pipeline in the housing of entering heat release section 3; High-temperature steam in heat release section 3 housings is with the boiler feedwater in the heat transferred tube bank (entering into the boiler feedwater in the tube bank through feed-water intake 11 from inlet channel 4); The reduction of high-temperature steam temperature in the housing is condensed into aqueous water then, drops in the working-medium water pipeline, circulates; This working medium water receives thermogenetic Natural Circulation steam; Its heat transfer coefficient makes the wall surface temperature of endotherm section determined by working media side temperature far above fume side, controls endotherm section 2 through the temperature of control working media and avoids the corrosion of acid dew.On endotherm section 2, add temperature measurer 6; And temperature measurer 6 links to each other with self-con-tained unit 9 respectively with triple valve 7; When the acid dew point of exhaust gas volumn, endotherm section input gas temperature or flue gas changes; Temperature measurer feeds back to self-con-tained unit 9 with endotherm section 2 wall surface temperatures, and self-con-tained unit 9 is regulated the flow of inlet water that gets into heat release section 3 through triple valve 7 again and guaranteed that the wall surface temperature of endotherm section 2 is higher than the acid dew-point temperature of flue gas all the time, makes that avoiding acid with the endotherm section 2 that flue gas directly contacts reveals the corrosion influence; Endotherm section 2 working-medium water pipelines adopt the structure of spiral fin coil and H type extended surface tube according to the big I of flue gas dust burdening; Heat transfer efficiency is much higher than the version of traditional heating surface, when reducing exhaust gas temperature more, has protected heat transmission equipment.
Most of heat in the smoke and waste steam boiler 1 main recovery flue gas is in order to produce low-pressure saturated steam; The remaining fume afterheat of part is by receiving for hot-water heating system back and forth; Further reduce exhaust gas temperature for hot-water heating system, its version is different from traditional cast iron type economizer.The acid dew-point temperature of supposing flue gas is T1; Then through reducing to about T1+25 ℃ to the exhaust gas temperature the present invention behind the hot-water heating system endotherm section 2; Far below traditional flue gas waste heat recovery system, 10 ℃ is the safety allowance of acid dew point in 25 ℃, and 15 ℃ is heat transfer temperature difference.
Feedwater gets into heat release section 3 through inlet channel 4 and preheats; Sub-fraction is regulated by triple valve 7 as required and is directly got in the smoke and waste steam boiler 1 through bypass duct 8; During to hot-water heating system startup or isolation, all smoke and waste steam boilers feedwater by-passing pipelines 8.
The system that utilizes the organic heat carrier furnace flue gas exhaust heat to produce low-pressure steam of the present invention; The boiler water major part that produces low-pressure saturated steam in the smoke and waste steam boiler 1 is provided by heated boiler feedwater in the heat release section 3; And the boiler feedwater in the heat release section 3 utilizes cold water to absorb fume afterheat in giving hot-water heating system and produces, and has made full use of the waste heat of flue gas, makes high-temperature flue gas through behind smoke and waste steam boiler 1 and the endotherm section 2; The temperature of flue gas reduces greatly; Simultaneously self-con-tained unit 9 has guaranteed that endotherm section 2 avoids the influence that corrosion is revealed in acid, at utmost utilizes fume afterheat, energy-saving and emission-reduction.
In addition; Working media in the endotherm section working-medium water pipeline of the present invention is the hot water through the fume afterheat heating; This hot water is evenly distributed in the working-medium water pipeline, thereby utilizes self-con-tained unit to make the whole wall surface temperature of endotherm section working-medium water pipeline can just be controlled at above 25 degree of acid dew-point temperature, thereby more makes full use of fume afterheat; And traditional economizer is because of having cold water side (influent side) and hot water side (water outlet side); Water temperature is uneven in whole economizer, thus the bad control of economizer wall surface temperature just more than acid dew-point temperature 25 the degree, fume afterheat can not make full use of.
Through above technical scheme; The system that utilizes the boiler of organic heat carrier fume afterheat to produce low-pressure steam of the present invention; Under the situation that does not influence boiler output; Reduce exhaust gas temperature, the waste heat that reclaims in the flue gas is used to produce low-pressure saturated steam, guarantees that simultaneously equipment of itself does not receive flue gas acid to reveal the influence of corrosion.The system that utilizes fume afterheat to produce low-pressure steam of the present invention, not only existing organic heat carrier furnace is equally applicable to other high Industrial Stoves of exhaust gas temperature.
Claims (6)
1. system that utilizes the organic heat carrier furnace flue gas exhaust heat to produce low-pressure steam; Comprise the organic heat carrier furnace flue; It is characterized in that; Also comprise the smoke and waste steam boiler (1) that is used to produce low-pressure saturated steam and give hot-water heating system, said smoke and waste steam boiler (1) is located in the organic heat carrier furnace flue, saidly comprises continuous endotherm section (2) and heat release section (3) to hot-water heating system; Said endotherm section (2) is located in the organic heat carrier furnace flue and is positioned at said smoke and waste steam boiler (1) afterwards; Said heat release section (3) is provided with an inlet channel (4) and outlet conduit (5), and said smoke and waste steam boiler (1) is provided with feed pipe (10), and said outlet conduit (5) is connected with said feed pipe (10).
2. system according to claim 1; It is characterized in that; Said inlet channel (4) links to each other with first outlet of triple valve (7), and second outlet of said triple valve (7) is connected through bypass duct (8) with said feed pipe (10), and the inlet of said triple valve (7) links to each other with the water source.
3. system according to claim 2 is characterized in that, said endotherm section (2) is provided with temperature measurer (6), and said temperature measurer (6) links to each other with a self-con-tained unit (9) respectively with triple valve (7).
4. system according to claim 1 is characterized in that, said smoke and waste steam boiler (1) is double-drum boiler or multitubular boiler.
5. system according to claim 1; It is characterized in that said endotherm section is provided with the working-medium water pipeline in (2), said heat release section (3) is a shell-and-tube heat exchanger; Comprise housing, be positioned at the tube bank of housing; Said working-medium water pipeline and said housing are connected, and an end of said tube bank is feed-water intake (11), and the other end of said tube bank is to water out (12); Said feed-water intake (11) is connected through inlet channel (4) with first outlet of triple valve (7), and the said water out (12) of giving is connected through outlet conduit (5) with feed pipe (10).
6. system according to claim 5 is characterized in that, said working-medium water pipeline is Influences of Structure of Spiral Finned Tube or H type extended surface tube structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110247570A CN102322624A (en) | 2011-08-24 | 2011-08-24 | System utilizing organic heat carrier furnace flue gas waste heat to produce low-pressure steam |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110247570A CN102322624A (en) | 2011-08-24 | 2011-08-24 | System utilizing organic heat carrier furnace flue gas waste heat to produce low-pressure steam |
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| CN102322624A true CN102322624A (en) | 2012-01-18 |
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| CN201110247570A Pending CN102322624A (en) | 2011-08-24 | 2011-08-24 | System utilizing organic heat carrier furnace flue gas waste heat to produce low-pressure steam |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102607010A (en) * | 2012-03-21 | 2012-07-25 | 长春当代信息产业集团有限公司 | Composite phase-change heat exchange system |
| CN102734787A (en) * | 2012-07-06 | 2012-10-17 | 上海伏波环保设备有限公司 | Concurrent recycling system for boiler smoke afterheat |
| CN111023568A (en) * | 2019-12-04 | 2020-04-17 | 中国北方车辆研究所 | Heat-conducting oil temperature stabilizing device of organic heat carrier furnace for radiator performance test |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2042154U (en) * | 1988-10-05 | 1989-08-02 | 吴昊 | Wall-temp. controllable coal economizer |
| CN2483606Y (en) * | 2001-06-22 | 2002-03-27 | 济南济钢设计院 | Externally placed feed water preheating device for waste heat boiler |
| CN201827879U (en) * | 2010-10-20 | 2011-05-11 | 张志宇 | Horizontal natural-circulation heat exchanger |
| CN202229154U (en) * | 2011-08-24 | 2012-05-23 | 上海康洪精密机械有限公司 | System for using organic heat carrier boiler smoke waste heat to generate low voltage steam |
-
2011
- 2011-08-24 CN CN201110247570A patent/CN102322624A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2042154U (en) * | 1988-10-05 | 1989-08-02 | 吴昊 | Wall-temp. controllable coal economizer |
| CN2483606Y (en) * | 2001-06-22 | 2002-03-27 | 济南济钢设计院 | Externally placed feed water preheating device for waste heat boiler |
| CN201827879U (en) * | 2010-10-20 | 2011-05-11 | 张志宇 | Horizontal natural-circulation heat exchanger |
| CN202229154U (en) * | 2011-08-24 | 2012-05-23 | 上海康洪精密机械有限公司 | System for using organic heat carrier boiler smoke waste heat to generate low voltage steam |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102607010A (en) * | 2012-03-21 | 2012-07-25 | 长春当代信息产业集团有限公司 | Composite phase-change heat exchange system |
| CN102607010B (en) * | 2012-03-21 | 2014-09-10 | 长春当代信息产业集团有限公司 | Composite phase-change heat exchange system |
| CN102734787A (en) * | 2012-07-06 | 2012-10-17 | 上海伏波环保设备有限公司 | Concurrent recycling system for boiler smoke afterheat |
| CN102734787B (en) * | 2012-07-06 | 2014-10-22 | 上海伏波环保设备有限公司 | Concurrent recycling system for boiler smoke afterheat |
| CN111023568A (en) * | 2019-12-04 | 2020-04-17 | 中国北方车辆研究所 | Heat-conducting oil temperature stabilizing device of organic heat carrier furnace for radiator performance test |
| CN111023568B (en) * | 2019-12-04 | 2021-03-23 | 中国北方车辆研究所 | Heat-conducting oil temperature stabilizing device of organic heat carrier furnace for radiator performance test |
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Application publication date: 20120118 |