CN203115934U - Device for efficiently recovering flue gas waste heat for generating steam - Google Patents
Device for efficiently recovering flue gas waste heat for generating steam Download PDFInfo
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- CN203115934U CN203115934U CN2012207190855U CN201220719085U CN203115934U CN 203115934 U CN203115934 U CN 203115934U CN 2012207190855 U CN2012207190855 U CN 2012207190855U CN 201220719085 U CN201220719085 U CN 201220719085U CN 203115934 U CN203115934 U CN 203115934U
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- flue gas
- steam generator
- heat
- temperature flue
- steam
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Abstract
The utility model discloses a device for efficiently recovering flue gas waste heat for generating steam. The device comprises a high-temperature flue gas box and a steam generator. The high-temperature flue gas box and the steam generator are of an integral metal box. A metal baffle is arranged in the middle to partition the high-temperature flue gas box and the steam generator. The steam generator is arranged at the upper part and the flue gas box is arranged at the lower part. The steam generator is connected with the flue gas box through heat pipes which penetrate through the baffle. The steam generator is a pressure-bearing container. Full-weld sealing treatment is conducted on the penetration position of the baffle. The heat exchange area of the heat pipes is expanded by adopting a technology of welding fins at high frequency. Each heat pipe works independently. Under the effect of the existing configured induced draft fan of a boiler, the high-temperature flue gas passes through the high-temperature flue gas box at high speed and the heat contained by the high-temperature flue gas is transferred to soft water in the steam generator through the heat pipes to generate steam. The device disclosed by the utility model has the advantages that the most heat in the high-temperature flue gas is recovered, the energy is saved, the environmental pollution is reduced and the operating cost of the boiler is reduced.
Description
Technical field
The utility model relates to a kind of device of high efficiente callback fume afterheat generation steam.
Background technology
Industrial fuel oil, combustion gas, when coal-burning boiler manufactures and designs, in order to prevent heated surface at the end of boiler corrosion and stifled ash, the standard state exhaust gas temperature generally is not less than 180 ℃, reaches as high as more than 300 ℃, and the high-temperature flue gas discharging not only causes a large amount of thermal waste, and the while is contaminated environment also.Boiler thermal output generally about 70%, is wasted through the flue emptying and other 30% left and right sides heat energy are most of.The flue gas waste heat recovery apparatus that the utility model is announced is simple and reliable; Do not change boiler body any part, construction time weak point, boiler is not had risk, and can reduce the boiler operatiopn cost greatly.
Summary of the invention
The purpose of this utility model is for overcoming above-mentioned deficiency, a kind of device of high efficiente callback fume afterheat generation steam being provided.
The utility model adopts following technical proposals:
A kind of device of high efficiente callback fume afterheat generation steam.Comprise the high-temperature flue gas case, steam generator.Described high-temperature flue gas case and steam generator are a bulk metal case, the centre separates with metal partion (metp), top is divided into steam generator, and the bottom is divided into the flue gas case, links to each other by the heat pipe through dividing plate, every of described heat pipe works independently, high-temperature flue gas passes through the high-temperature flue gas collection box at a high speed under the air-introduced machine effect of the former configuration of boiler, and finishes the heat conduction by described heat pipe, in order to the normal-temperature water in the heating steam generator, produce steam.
Described heat pipe operation principle: from thermodynamic (al) angle, the good capacity of heat transmission why heat pipe has, the heat absorption, the heat release that are derived from object are relative, and be every when having temperature difference to exist, and the phenomenon of heat transmission from high temperature to the low temperature place just must occur.From three kinds of modes (radiation, convection current, conduction) of heat transmission, wherein the heat conduction is the fastest.Heat pipe utilizes sweat cooling exactly, makes that heat pipe two ends temperature difference is very big, and heat is conducted fast.General heat pipe is made up of shell, imbibition core and end cap.Inside heat pipe is to be pumped into negative pressure state, charges into suitable heat-conducting medium liquid, and this boiling point of liquid is low, easily volatilization.Tube wall has the imbibition core, and it is made of the capillary porous material.Heat pipe one end is evaporation ends, an other end is condensation end, when heat pipe one end is heated, liquid in the capillary evaporates rapidly, and steam flows to an other end under small pressure differential, and discharges heat, regelation becomes liquid, liquid flows back to evaporator section along porous material by the effect of capillary force again, and so circulation is more than, and heat reaches an other end by heat pipe one end.This circulation is carried out fast, and heat can be come by conduction continuously.As shown in Figure 1.
The utility model reduces discharging and is main purpose with energy savings, takes full advantage of the high-temperature flue gas residual heat resources generation steam of boiler emptying, greatly reduces the boiler operatiopn cost.
The beneficial effects of the utility model:
(1) heat pipe is to absorb when the Working fluid phase changing and discharge the latent heat of vaporization, and working medium flows to conduct heat, the thermal conductivity height, and its capacity of heat transmission is far longer than known any metal;
(2) the process spread heat exchange area of employing heat pipe side high-frequency welding fin, its heat transfer coefficient is compared with traditional tubular heat exchanger and can be improved more than 5 times;
(3) the isothermal performance is good.Heat pipe inner chamber is in the steam of saturation state by the pressure that evaporation ends flows to condensation end very little (having only about 1 ℃).The wall surface temperature of heat pipe work is higher, away from acid dew point and cold end corrosion zone, fundamentally avoids the appearance of dewing corrosion and clogging phenomenon;
(4) security reliability height.Even single heat pipe failure cold fluid and hot fluid also will not take place mixes, influence the safe operation of boiler.The heat exchange occasion that is used for fluids such as inflammable, explosive, many dirt of burn into has very high security reliability;
(5) save floor space.The heat exchange element of being made by finned tube, when being used in combination with heat-exchanger rig, its compact conformation, installation weight be light, save space, applicable to limited installing space;
(6) operating cost is low.Because heat pipe work does not need power, movement-less part does not produce noise, and cold fluid and hot fluid all flows outside pipe, and separates fully by dividing plate, and single heat pipe works alone, and is independent of each other;
(7) applied widely.Device has adopted composite design, can realize taking place steam according to the different operating modes of boiler.
Description of drawings
Fig. 1 is by being adopted heat exchange components and parts heat pipe schematic diagram in the utility model;
Wherein: 1. heat pipe, 2. fin, 3. heat release section, 4. dividing plate, 5. endotherm section, 6. liquid (working medium), 7. steam (working medium).
Fig. 2 is heat pipe steam generator schematic diagram of the present utility model;
Wherein: 1. high-temperature flue gas case, flue gas move towards, 2. dividing plate, 3. heat pipe, 4. steam (vapor) outlet, 5. steam generator, 6. demineralized water entrance, 7. boiler dust remover, 8. boiler induced-draft fan, 9. Industrial Boiler, 10. chimney.
The specific embodiment
Make it to produce the steam example below in conjunction with accompanying drawing with the high-temperature flue gas of recovery boiler emptying the utility model is done further detailed description.
A kind of high-temperature flue gas of recovery boiler emptying makes it to produce the heater of steam:
1, the contained heat energy in the high-temperature flue gas of high-temperature flue gas case 1 of flowing through is delivered to steam generator 5 by the heat pipe 3 through dividing plate 2;
2, the contained heat energy of high-temperature flue gas passes through via high-temperature flue gas case 1, washes away heat pipe 3 heat energy and makes it to be converted into steam to the soft water in steam generator 5 transmission and the heating steam generator 5;
3, demineralized water enters from demineralized water import 6, makes it to produce steam via heat pipe 3 heating;
4, the flue gas of process cooling under the effect of air-introduced machine 8, enters chimney discharged to atmosphere through dust arrester 7;
The heater of described high-temperature flue gas heating boiler moisturizing, top are divided into steam generator (water tank), and the bottom is divided into the flue gas case.
Described steam generator and high-temperature flue gas case have dividing plate to separate.
Described heat pipe by dividing plate through between steam generator and the flue gas case, perforation place full weld encapsulation process.
Described steam generator is pressure resistant vessel.
Described heat pipe calculates via the thermal technology and carries out specification, quantity, arranged ordered by design.
Described flue gas discharged to atmosphere calculates via the thermal technology and guarantees that its exhaust temperature is more than acid dew point.
1 6,000,000 kilocalorie coal burning heat-conducting oil residual heat from boiler fume reclaims the analysis that makes it to take place steam
Boiler power is 6,000,000 kilocalories, and Coal-fired capacity is: 1.25t/h.
Flue-gas temperature is 285 degree, adorns a fume afterheat steam generator, and exhaust gas temperature is reduced to about 185 degree, and the heat of recyclable utilization is 100 * 0.3*15
4Kcal/h.
The fume afterheat steam generator is installed on the main chimney flue, produces steam when flue gas passes through heat exchanger automatically, gets final product 630 kilograms/hour of output 0.8MPA steam.
The heat recovery computational chart
Illustrate:
1m
3Flue gas decline 1 degree heat release 0.3 kilocalorie
1m
3285-185=100 ℃ of heat release 30 kilocalories of flue gas decline
12500m
3100 ℃ of heat release 37.5 ten thousand kilocalories (flue gas flow of 12500m3 is according to the 25 tons of fire coals in 20 hours skies, 1.25 tons of calculating in a hour) descend
Be 600,000 kilocalories and 1 ton of 0.8Mp steam contains heat
The 37.5/60=0.625 ton can steam
Energy-saving benefit calculates
1, according to the steam calculation of price
Per hour produce 0.6 ton of steam
By 150 yuan/ton of present market steam valencys, per hour cost saving
150 yuan/ton * 0.6 ton/hour=90 yuan/hour
The annual boiler operatiopn time then can save by 6000 hours every year
90 yuan/hour * 6000 hours=540,000 yuan
2, calculate according to saving coal
According to 0.6 ton of steam per hour, one day 20 hours is exactly 12 tons, the heat of 7,200,000 kilocalories just, and the heat that one ton of coal combustion produces is 5,300,000 kilocalories (according to the 5300kcal/kg coals), the efficiency of combustion of boiler is generally 75%, just one ton of coal is 397.5 ten thousand kilocalories by the heat that steam absorbed fully, be equivalent to save 7,200,000/397.5 ten thousand=1.8 tons of coals after loading onto steam generator, saved 54 tons of coals in one month, calculate according to 650 yuan of/ton coals, (calculating according to 30 days) saved 35100 yuan in one month, 351000 yuan of savings in a year (calculating according to 10 months).
Claims (4)
1. the device of a high efficiente callback fume afterheat generation steam, comprise high-temperature flue gas case, steam generator, it is characterized in that: described high-temperature flue gas case and steam generator are a bulk metal case, and the centre separates with metal partion (metp), link to each other by the heat pipe through dividing plate.
2. the device of high efficiente callback fume afterheat generation steam according to claim 1, it is characterized in that, through high-temperature flue gas case and steam generator, described heat pipe adopts the process spread heat exchange area of high-frequency welding fin to described heat pipe by circular hole, and every works independently.
3. the device of high efficiente callback fume afterheat generation steam according to claim 1 is characterized in that, the dividing plate circular hole through part between described high-temperature flue gas case and steam generator is handled through full weld, and the two is isolated into two separate space.
4. according to the device of claim 1 or 2 or 3 described high efficiente callback fume afterheat generation steam, it is characterized in that described steam generator is pressure resistant vessel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012207190855U CN203115934U (en) | 2012-12-24 | 2012-12-24 | Device for efficiently recovering flue gas waste heat for generating steam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012207190855U CN203115934U (en) | 2012-12-24 | 2012-12-24 | Device for efficiently recovering flue gas waste heat for generating steam |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203115934U true CN203115934U (en) | 2013-08-07 |
Family
ID=48896273
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012207190855U Expired - Fee Related CN203115934U (en) | 2012-12-24 | 2012-12-24 | Device for efficiently recovering flue gas waste heat for generating steam |
Country Status (1)
| Country | Link |
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| CN (1) | CN203115934U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106765018A (en) * | 2016-12-01 | 2017-05-31 | 河北工业大学 | A kind of low-quality waste heat recovery generating device |
| CN108443904A (en) * | 2018-04-19 | 2018-08-24 | 北京中矿赛力贝特节能科技有限公司 | A kind of power-plant flue gas based on heat pipe heat exchanging technology disappears white system |
| CN109058956A (en) * | 2018-05-07 | 2018-12-21 | 浙江天英环保科技有限公司 | Flue gas heat exchanger |
| CN113154345A (en) * | 2021-04-20 | 2021-07-23 | 山东沣和力能源技术有限公司 | Superheated steam generator using solid heat accumulator as heat source |
-
2012
- 2012-12-24 CN CN2012207190855U patent/CN203115934U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106765018A (en) * | 2016-12-01 | 2017-05-31 | 河北工业大学 | A kind of low-quality waste heat recovery generating device |
| CN106765018B (en) * | 2016-12-01 | 2019-05-31 | 河北工业大学 | A kind of low-quality waste heat recovery generating device |
| CN108443904A (en) * | 2018-04-19 | 2018-08-24 | 北京中矿赛力贝特节能科技有限公司 | A kind of power-plant flue gas based on heat pipe heat exchanging technology disappears white system |
| CN109058956A (en) * | 2018-05-07 | 2018-12-21 | 浙江天英环保科技有限公司 | Flue gas heat exchanger |
| CN113154345A (en) * | 2021-04-20 | 2021-07-23 | 山东沣和力能源技术有限公司 | Superheated steam generator using solid heat accumulator as heat source |
| CN113154345B (en) * | 2021-04-20 | 2022-08-02 | 山东沣和力能源技术有限公司 | Superheated steam generator using solid heat accumulator as heat source |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130807 Termination date: 20131224 |