CN201053672Y - Steaming boiler exhaust heat recovery device - Google Patents

Steaming boiler exhaust heat recovery device Download PDF

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Publication number
CN201053672Y
CN201053672Y CNU2007201694068U CN200720169406U CN201053672Y CN 201053672 Y CN201053672 Y CN 201053672Y CN U2007201694068 U CNU2007201694068 U CN U2007201694068U CN 200720169406 U CN200720169406 U CN 200720169406U CN 201053672 Y CN201053672 Y CN 201053672Y
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CN
China
Prior art keywords
flue
smoke
flue gas
gas cleaner
steam boiler
Prior art date
Application number
CNU2007201694068U
Other languages
Chinese (zh)
Inventor
姚兴玉
Original Assignee
姚兴玉
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Filing date
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Application filed by 姚兴玉 filed Critical 姚兴玉
Priority to CNU2007201694068U priority Critical patent/CN201053672Y/en
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Publication of CN201053672Y publication Critical patent/CN201053672Y/en

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Abstract

An exhaust heat recovery system device of a steam boiler comprises a steam boiler, a main flue heat recovery device and a bypass flue heat recovery device, all of which are provided with a flue-gas cleaner; the upper part inside the flue-gas cleaner is provided with an exhaust underwater pipe, while the lower part inside the flue-gas cleaner is filled with water; the lower side of the inside the flue-gas cleaner is connected with a draining pool and a clean water pool; a circulating pump is arranged in the clean water pool, so that hot water which is heated by absorbing heat in the clean water pool can be sent to the boiler through pipelines for a heat exchange pipe winding in a feed-tank, and then cool water in the feed-tank can be heated through heat exchange, and enters into the boiler for heating and producing steam. The cooling water in the feed-tank returns to the clean water pool through pipelines for cycling. The bypass flue heat recovery device can recover the residual heat of the furnace under outage statement. The utility model can recover lost heat, save energy, and can improve the efficiency of flue smoke purification, and facilitate environmental protection.

Description

Steam boiler smoke discharging residual heat retracting device
Technical field
The utility model relates to a kind of steam boiler equipment, is specifically related to a kind of steam boiler gas cleaning waste-heat recovery device.
Background technology
At present, its thermal efficiency of employed steam boiler is very high in all trades and professions, generally between 70% to 90%.But, thereby still have a large amount of heat energy to run off with boiler exhaust gas because exhaust gas temperature is generally between 170 ° to 225 °.During boiler operatiopn, not only waste the limited energy, and be unfavorable for protecting environment.
The utility model content
Exist a large amount of heat energy to run off in order to overcome existing steam boiler with boiler exhaust gas; waste energy; be unfavorable for protecting the deficiency of environment; the purpose of this utility model is: a kind of steam boiler smoke discharging residual heat retracting device is provided; this device can reclaim the heat energy that runs off; energy savings is increased economic efficiency and can be improved gas cleaning efficient, helps protecting environment.
The technical scheme that its technical problem that solves the utility model adopts is as follows:
A kind of steam boiler smoke discharging residual heat retracting device, it comprises steam boiler and flue collector heat-energy recovering apparatus, by-pass flue heat-energy recovering apparatus; Described flue collector heat-energy recovering apparatus comprises air-introduced machine, flue collector Y 1, circulating pump, boiler feedwater case, heat exchanger tube winding, heat exchanger tube winding feed pipe X under the flue gas cleaner, blowoff valve, one-level sedimentation basin, second-level settling pond, clear water reserviors, liquid 1And heat exchanger tube winding return pipe X 2, described steam boiler by flue successively with air-introduced machine, flue collector Y 1, flue gas cleaner links to each other, the top in the flue gas cleaner is divided into not connected advancing smoke-box and go out smoke-box, goes out the smoke-box top and communicates with chimney; The vertically arranged smoke evacuation snorkle of some horizontal and vertical arrangements is equipped with in the bottom of advancing smoke-box, and these smoke evacuation snorkles do not contact each other, do not communicate yet; Water has been filled in the bottom of flue gas cleaner, and the bottom of all smoke evacuation snorkles is all below waterline; In the flue gas cleaner bottom blowoff valve is housed, the flue gas cleaner bottom is provided with the one-level sedimentation basin, the side of one-level sedimentation basin is provided with second-level settling pond and clear water reserviors successively, blowoff valve is in normally open when boiler operatiopn, the bottom of flue gas cleaner, one-level sedimentation basin, second-level settling pond and clear water reserviors all communicate; Circulating pump under the liquid is housed in clear water reserviors, and circulating pump is by heat exchanger tube winding feed pipe X under this liquid 1Link to each other with the heat exchanger tube winding in the boiler feedwater case, the heat exchanger tube winding is by heat exchanger tube winding return pipe X 2Link to each other with clear water reserviors; The boiler feedwater case also is connected with steam boiler;
Described by-pass flue heat-energy recovering apparatus is in the back of steam boiler a by-pass flue Y to be installed 2, a by-pass flue to be installed on this by-pass flue to be opened and closed valve, this by-pass flue keying valve advances mouth by pipeline with the bypass that is located at flue gas cleaner smoke outside and links to each other, and is provided with row's shower on the top that goes out smoke-box.
Because the utility model is provided with the flue collector heat-energy recovering apparatus and the by-pass flue heat-energy recovering apparatus of steam boiler, when boiler operatiopn, to close by-pass flue and open and close valve, flue gas is by the air-introduced machine flue collector Y that flows through 1Enter the smoke-box that advances of flue gas cleaner, separate fully under normal pressure because of advancing smoke-box and going out between the smoke-box, flue gas is under the effect of air-introduced machine blast like this, slip into by snorkle in the water of flue gas cleaner bottom, carry out " washing " one time, can reach by " washing ": 1, a large amount of heats is absorbed by water in the flue gas; 2, the high-temperature water vapor in the flue gas is soluble in water; 3, dust in flue gas almost all is melted in the water; 4, sulfur in smoke is almost all soluble in water.The flue gas of pure like this low temperature enters out smoke-box by the space between the smoke evacuation snorkle, enter atmosphere through chimney again, the water of a large amount of heats constantly circulates between process one-level sedimentation basin, second-level settling pond, clear water reserviors and circulating pump and the flue gas cleaner successively in the flue gas and absorbed, water temperature raises gradually, the hot water of being raised out by circulating pump enters the heat exchanger tube winding through heat exchanger tube winding feed pipe, change the cold water in the boiler feedwater case into hot water by the heat exchanger tube winding, again the hot water in the water tank is offered boiler and heat and steam.The water that cools off through heat exchange in the heat exchanger tube winding flows into clear water reserviors via heat exchanger tube winding return pipe simultaneously, begins new circulation.
When the boiler operation suspension, air-introduced machine is in dead ship condition, opens the keying valve of by-pass flue this moment, and the flue gas that the boiler ember is produced is by-pass flue Y because the draft effect of chimney is flowed through 2Directly enter the smoke-box that of flue gas cleaner, and become the pure flue gas chimney of flowing through after washing by shower and enter atmosphere.Shower water flows into one-level sedimentation basin, second-level settling pond and clear water reserviors, and beginning circulates under the effect of circulating pump.
The beneficial effects of the utility model are:
1, the heat energy of flue gas in the energy recovered steam boiler makes it to utilize again, and energy savings is increased economic efficiency.
2, improve gas cleaning efficient by flue gas cleaner.Reduce the discharging of sulfur dioxide and dust, help environmental protection.
Description of drawings
Fig. 1 is the structural representation of the utility model steam boiler smoke discharging residual heat retracting device
Fig. 2 is the A-A cross-sectional schematic of Fig. 3
Fig. 3 is the schematic top plan view of flue gas cleaner among Fig. 1
Fig. 4 is the B-B cross-sectional schematic of Fig. 2
Among the figure, 1. circulating pump 13. recirculated water control valve I 14. recirculated water control valve II 15. boiler feedwater casees 16. heat exchanger tube windings 17. chimneys 18. by-pass flues open and close valve 19. showers 20. heat exchanger tube winding feed pipe X under steam boiler 2. air-introduced machines 3. maintenance joints 4. flue gas cleaners 5. overflow pipes 6. smoke evacuation snorkles 7. blowoff valves 8. one-level sedimentation basins 9. second-level settling ponds 10. clear water reserviors 11. high density filter nets 12. liquid 121. heat exchanger tube winding return pipe X 222. flue collector Y 123. by-pass flue Y 224. advancing smoke-box 25. goes out smoke-box 26. waterlines 27. bypass and advances mouth 28. anticorrosive coats
The specific embodiment
Below in conjunction with drawings and Examples the utility model is further specified.
Figure 1 shows that an embodiment of the utility model steam boiler smoke discharging residual heat retracting device, this equipment is provided with flue collector heat-energy recovering apparatus and by-pass flue heat-energy recovering apparatus.The flue collector heat-energy recovering apparatus is by flue one air-introduced machine 2 to be housed in steam boiler 1 back, and flue gas is by the air-introduced machine 2 flue Y that flows through 122 enter flue gas cleaner shown in Figure 34.See also shown in Figure 2ly, the top longitudinal subdivision of this flue gas cleaner 4 is not connected advance smoke-box 24 and go out smoke-box 25, goes out smoke-box 25 tops and communicates with chimney 17.The some vertically arranged smoke evacuation snorkles 6 of horizontal and vertical arrangement are housed in the bottom of advancing smoke-box 24, and as shown in Figure 4, these smoke evacuation snorkles 6 are tubule, do not contact also each other not communicate.Water has been filled in the bottom of flue gas cleaner 4, the bottom of all smoke evacuation snorkles 6 is all in the appropriate position of waterline below 26, the side of the pipeline section that pulls the plug at all smoke evacuation snorkles 6 respectively is drilled with some apertures, the cross-sectional area of summation 〉=this root pipe of the every little hole area of pipe.Enter flue gas in the flue gas cleaner 4 like this under the blast effect of air-introduced machine, pull the plug by diving smoke exhaust pipe 6 and carry out one time " washing ".Through after " washing ", the flue gas of pure low temperature enters atmosphere by going out smoke-box 25 chimney 17 of flowing through.
In flue gas cleaner 4 bottoms one blowoff valve 7 is housed, this blowoff valve 7 is in normally open when boiler operatiopn, so that at any time dust is rinsed out.Be provided with one-level sedimentation basin 8 in the bottom of flue gas cleaner 4, one-level sedimentation basin 8 sides are provided with second-level settling pond 9 and clear water reserviors 10 successively.When blowoff valve 7 was in normally open, flue gas cleaner 4 bottoms, one-level sedimentation basin 8, second-level settling pond 9 and clear water reserviors 10 all communicated, and made the hot water that flows out in the flue gas cleaner constantly enter each pond successively, and the water temperature in the pond is constantly raise.Circulating pump 12 under the liquid is housed in clear water reserviors 10, the hot water that constantly heats up is up taken out, through the heat exchanger tube winding feed pipe X that links to each other with circulating pump 12 under the liquid 120 enter boiler feedwater case 15 Interior changes The heat pipe windingAt heat exchanger tube winding feed pipe X 1Recirculated water control valve II 14 is housed, to regulate the size of quantity of circulating water on 20.Some heat exchanger tube windings 16 are housed in boiler feedwater case 15, because the water in the boiler feedwater case 15 is cold water, with bigger from the hot water heat transfer temperature difference in the clear water reserviors 10, with a large amount of heat absorption in this hot water, the device that is connected with steam boiler 1 by boiler feedwater case 15 offers steam boiler 1 and heats and steam again.Boiler water tank 15 is a prior art with the syndeton of steam boiler 1.Water at low temperature after heat is recovered simultaneously is by heat exchanger tube winding return pipe X 221 enter clear water reserviors 10, high density filter net 11 are housed entering between clear water reserviors 10 place's second-level settling ponds and the clear water reserviors, to wash at any time, avoid screen pack to stop up.Heat exchanger tube winding 16 can determine that single winding still is the combinations in parallel of a plurality of windings according to the size of boiler 1.
Flue gas cleaner 4 in the utility model is provided with water-level control apparatus, and this water-level control apparatus comprises control valve I 13, overflow pipe 5.Recirculated water control valve I 13 is contained in circulating pump 12 and leads on the pipeline of flue gas cleaner 4, and overflow pipe 5 is contained in a side of flue gas cleaner 4, and the top height of this overflow pipe 5 is consistent with waterline 26.In order to guarantee that the water level in the flue gas cleaner 4 is in steady state, circulating pump 12 is supplementing water in flue gas cleaner 4 continuously, and the additional water yield is controlled by control valve I 13, and the principle of control is: amount of makeup water 〉=blowdown flow rate.When if liquid level surpasses constant line, the water that then has more flows out by overflow pipe 5.The water that overflows flows into one-level sedimentation basin 8 by pipeline, circulates.
The utility model also is provided with the by-pass flue heat-energy recovering apparatus, and this device is in the back of steam boiler 1 a by-pass flue Y to be installed 223, at by-pass flue Y 2A by-pass flue is installed on 23 is opened and closed valve 18, this by-pass flue opens and closes valve 18 by by-pass flue Y 223 be located at bypass that flue gas cleaner 4 goes out smoke-box 25 outsides and advance mouth 27 and link to each other, be provided with row's shower 19 on the top that goes out smoke-box 25, be lined with one deck anticorrosive coat 28 going out smoke-box 25 inwalls.When the boiler operation suspension, air-introduced machine 2 is in dead ship condition, and open by-pass flue and open and close valve 18 this moment, and the flue gas that the boiler ember is produced is owing to the draft effect of chimney, and by-pass flue Y flows through 223, advance mouth 27 by bypass and directly enter flue gas cleaner and go out smoke-box 25, and wash by shower 19, make it to reach gas cleaning, flue gas after being purified enters atmosphere through chimney 17, and the heat in the flue gas is absorbed the blowoff valve 7 of flowing through by shower water, circulates in the pond below flowing into.Cyclic process is identical with the flue collector heat-energy recovering apparatus.Boiler afterheat under the shut down condition is fully utilized.
The utility model is provided with dirt mud cleaning plant in one-level sedimentation basin 8, second-level settling pond 9 and clear water reserviors 10.For miniature boiler, when dirt mud arrives to a certain degree, can drain water and carry out artificial deashing.For the miniature boiler that can not stop transport and bigger boiler the soot blower mechanical ashing can be installed.
For the ease of maintenance, advancing smoke-box 24, go out the flue collector Y of smoke-box 25 at flue gas cleaner 4 1Respectively be provided with a maintenance joint 3 on 22.These device two ends are provided with flange, enter flue gas cleaner 4 and overhaul by the bolt of dismounting on the flange maintenance joint 3 of dismantling.
The utility model also need carry out the acid treatment of flue gas cleaner recirculated water.Because sulfur in smoke is absorbed by water, the acid concentration of recirculated water is more and more higher, shows neutrality or alkalescent for making water, and need drop into alkali in the pond or quick lime neutralizes, to avoid second environmental pollution.

Claims (9)

1. steam boiler smoke discharging residual heat retracting device is characterized in that: it comprises steam boiler and flue collector heat-energy recovering apparatus, by-pass flue heat-energy recovering apparatus; Described flue collector heat-energy recovering apparatus comprises air-introduced machine (2), flue collector Y 1(22), circulating pump (12), boiler feedwater case (15), heat exchanger tube winding (16), heat exchanger tube winding feed pipe X under flue gas cleaner (4), blowoff valve (7), one-level sedimentation basin (8), second-level settling pond (9), clear water reserviors (10), the liquid 1(20) and heat exchanger tube winding return pipe X 2(21), described steam boiler (1) by flue successively with air-introduced machine (2), flue collector Y 1(22), flue gas cleaner (4) links to each other, the top in the flue gas cleaner is divided into not connected advancing smoke-box (24) and go out smoke-box (25), goes out smoke-box (25) top and communicates with chimney (17); The vertically arranged smoke evacuation snorkles of some horizontal and vertical arrangements (6) are equipped with in the bottom of advancing smoke-box (24), and these smoke evacuation snorkles (6) do not contact each other, do not communicate yet; Water has been filled in the bottom of flue gas cleaner (4), and the bottom of all smoke evacuation snorkles (6) is all below waterline; In flue gas cleaner (4) bottom blowoff valve (7) is housed, flue gas cleaner (4) bottom is provided with one-level sedimentation basin (8), the side of one-level sedimentation basin (8) is provided with second-level settling pond (9) and clear water reserviors (10), blowoff valve (7) is in normally open when boiler operatiopn, the bottom of flue gas cleaner (4), one-level sedimentation basin (8), second-level settling pond (9) and clear water reserviors (10) all communicate; Circulating pump under the liquid (12) is housed in clear water reserviors (10), and circulating pump under this liquid (12) is by heat exchanger tube winding feed pipe X 1(20) link to each other with heat exchanger tube winding (16) in the boiler feedwater case (15), heat exchanger tube winding (16) passes through return pipe X 2(21) link to each other with clear water reserviors (10); Boiler feedwater case (15) also is connected with steam boiler (1);
Described by-pass flue heat-energy recovering apparatus is in the back of steam boiler (1) a by-pass flue Y to be installed 2(23), a keying valve (18) is installed on this by-pass flue, this by-pass flue open and close valve (18) by pipeline be located at bypass that flue gas cleaner (4) goes out smoke-box (25) outside and advance mouth (27) and link to each other, be provided with one on the top that goes out smoke-box and arrange shower (19).
2. steam boiler smoke discharging residual heat retracting device according to claim 1, it is characterized in that: described flue gas cleaner (4) is provided with water-level control apparatus, be on circulating pump (12) leads to the pipeline of flue gas cleaner (4), recirculated water control valve I (13) to be housed, side at flue gas cleaner (4) is equipped with overflow pipe (5), and the top height of overflow pipe (5) is consistent with waterline (26).
3. steam boiler smoke discharging residual heat retracting device according to claim 1 and 2 is characterized in that: at described heat exchanger tube winding return pipe X 2(21) feed clear water reserviors (10) and locate, between second-level settling pond (9) and the clear water reserviors (10) high density filter net (11) is housed.
4. steam boiler smoke discharging residual heat retracting device according to claim 1 is characterized in that: be provided with dirt mud cleaning plant in one-level sedimentation basin (8).
5. steam boiler smoke discharging residual heat retracting device according to claim 1 is characterized in that: the side at the pipeline section that pulls the plug of all smoke evacuation snorkles (6) respectively is drilled with some apertures, the cross-sectional area of the summation of every Guan Shangxiao hole area 〉=this root pipe.
6. steam boiler smoke discharging residual heat retracting device according to claim 1 is characterized in that: smoke-box (25) inwall that goes out at flue gas cleaner (4) is lined with one deck anticorrosive coat (28).
7. steam boiler smoke discharging residual heat retracting device according to claim 1 is characterized in that: determine that according to the size of steam boiler (1) heat exchanger tube winding (16) is the combination in parallel of single winding or a plurality of winding.
8. steam boiler smoke discharging residual heat retracting device according to claim 1 is characterized in that: advancing smoke-box (24), go out the flue collector Y of smoke-box (25) at flue gas cleaner (4) 1(22) respectively be provided with maintenance joint (3) on.
9. steam boiler smoke discharging residual heat retracting device according to claim 1 is characterized in that: at heat exchanger tube winding feed pipe X 1Recirculated water control valve II (14) is housed (20).
CNU2007201694068U 2007-06-25 2007-06-25 Steaming boiler exhaust heat recovery device CN201053672Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CNU2007201694068U CN201053672Y (en) 2007-06-25 2007-06-25 Steaming boiler exhaust heat recovery device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CNU2007201694068U CN201053672Y (en) 2007-06-25 2007-06-25 Steaming boiler exhaust heat recovery device

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Publication Number Publication Date
CN201053672Y true CN201053672Y (en) 2008-04-30

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102183007A (en) * 2011-04-11 2011-09-14 广西志远节能环保设备有限公司 Waste heat recovering system of boiler
CN102297412A (en) * 2010-06-24 2011-12-28 李基浩 Steam supply system
CN104613458A (en) * 2015-01-26 2015-05-13 李保军 Heat energy comprehensive utilization device of heat-power system with steam boiler

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102297412A (en) * 2010-06-24 2011-12-28 李基浩 Steam supply system
CN102297412B (en) * 2010-06-24 2014-05-07 李基浩 Steam supply system
CN102183007A (en) * 2011-04-11 2011-09-14 广西志远节能环保设备有限公司 Waste heat recovering system of boiler
CN104613458A (en) * 2015-01-26 2015-05-13 李保军 Heat energy comprehensive utilization device of heat-power system with steam boiler

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Granted publication date: 20080430