CN203771378U - Device for recycling afterheat of boiler flue gas - Google Patents
Device for recycling afterheat of boiler flue gas Download PDFInfo
- Publication number
- CN203771378U CN203771378U CN201420000665.8U CN201420000665U CN203771378U CN 203771378 U CN203771378 U CN 203771378U CN 201420000665 U CN201420000665 U CN 201420000665U CN 203771378 U CN203771378 U CN 203771378U
- Authority
- CN
- China
- Prior art keywords
- boiler
- air
- pipe
- flue gas
- heat
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title abstract description 23
- 239000003546 flue gas Substances 0.000 title abstract description 23
- 238000004064 recycling Methods 0.000 title abstract description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 21
- 239000007789 gas Substances 0.000 abstract description 15
- 239000000446 fuel Substances 0.000 abstract description 7
- 230000000694 effects Effects 0.000 abstract description 4
- 238000002485 combustion reaction Methods 0.000 abstract 1
- 230000008602 contraction Effects 0.000 abstract 1
- 239000002918 waste heat Substances 0.000 description 7
- 238000002955 isolation Methods 0.000 description 6
- 238000011084 recovery Methods 0.000 description 5
- 230000007797 corrosion Effects 0.000 description 4
- 238000005260 corrosion Methods 0.000 description 4
- 239000007788 liquid Substances 0.000 description 3
- 230000000391 smoking effect Effects 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- 238000003915 air pollution Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 238000006477 desulfuration reaction Methods 0.000 description 2
- 230000023556 desulfurization Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 239000000969 carrier Substances 0.000 description 1
- 235000019504 cigarettes Nutrition 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
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- Air Supply (AREA)
Abstract
The utility model discloses a device for recycling afterheat of boiler flue gas. The device comprises a boiler air supply fan and a boiler gas exhaust pipe, and is characterized in that an air outlet pipe of the boiler air supply fan is connected with an air mixing pipe; the air mixing pipe is connected with a boiler hearth through a pipeline; the pipe diameter of the middle part of the air mixing pipe is contracted; the boiler gas exhaust pipe is connected with the contraction end of a conical flue; an air return pipe is arranged at the bottom of the conical flue and is connected with the thinnest position on the middle part of the air mixing pipe. According to the device, heat in flue gas can pass through a heat exchange pipe so as to enlarge a contact area of the flue gas and water, so that the heat exchange effect of the flue gas and cold water is enhanced; the heated hot water is returned into a boiler, so that fuel can be saved; the air return pipe is arranged at the bottom of the conical flue, so that the collected high-temperature flue gas is conically flared, is mixed with cold air through the air return pipe and then is returned to an air inlet of the boiler to preheat the cold air; therefore the combustion efficiency of the fuel is improved.
Description
Technical field
The utility model relates to a kind of waste-heat recovery device, especially relates to a kind of boiler smoke-gas residual-heat recovering device.
Background technology
Boiler is a kind of energy conversion, and what boiler used is solid, liquid or gaseous fuel, by the conversion of boiler, outwards exports steam, high-temperature water or other heat carriers.Boiler can produce a large amount of high-temperature flue gas while use, contains a large amount of heats.As can not be rationally utilized the heat in flue gas, not only waste a large amount of heat energy, also can cause environmental pollution.Occurred on the market many boiler exhaust gas thermal recovery units, but its recycling efficiency is not high and not environmental protection.In addition existing boiler exhaust gas thermal recovery unit is easily out of order, and can not durablely use.
Summary of the invention
The purpose of this utility model is to provide a kind of boiler smoke-gas residual-heat recovering device, and to improve, existing boiler exhaust gas heat recovery and utilization is insufficient, tail gas also contains the technical problems such as many waste heats.
The utility model mainly solves the problems of the technologies described above by following technical proposals: a kind of boiler smoke-gas residual-heat recovering device, comprise boiler breeze fan, boiler exhaust pipe, the discharge pipe of described boiler breeze fan is connected with an air mixing tube, air mixing tube is connected with boiler furnace by pipeline, and the middle part caliber of described air mixing tube shrinks; Described boiler exhaust pipe is connected with the serrated end that changes taper flue, and described taper flue bottom is provided with backwind tube, and this backwind tube is the most carefully located to be connected with air mixing tube middle part.
As preferably, 1/5-1/4 of the serrated end sectional area that described backwind tube sectional area is taper flue.
The utlity model has frame for movement novelty, feature that flue gas utilization rate is high.This waste heat of boiler tail gas recycling device can increase the heat in flue gas the contact area of flue gas and water by heat-exchange tube, improve the heat exchange effect of flue gas and cold water, and the hot water after intensification returns in boiler, can fuel saving.Taper flue bottom is provided with backwind tube, and the high-temperature flue gas that taper enlarging goes out to collect under the effect of bernoulli principle, is back to the air inlet of boiler after backwind tube mixes with cold air, can carry out preheating to cold air, improves fuel economy; Isolation ward can prevent after the corrosion of heat-exchange tube welding position, and water and high-temperature flue gas directly enter heat-exchange tube, collection chamber and accelerate parts corrosion in conjunction with rear; Dirt pocket adopts water curtain dedusting, can, for flue gas desulfurization, prevent air pollution, and collection chamber can be collected the solid particle in flue gas, and openable cover plate can be cleared up heat-exchange tube very easily.This utility model has well been improved the low deficiency of existing using waste heat from tail gas reclaimer utilization rate, has good economic benefit and environment protecting.
Brief description of the drawings
Fig. 1 is a kind of structural representation of the present utility model;
Fig. 2 is that the A-A of Fig. 1 is to cutaway view;
Fig. 3 is the local enlarged diagram of B portion in Fig. 1.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the technical solution of the utility model is described in further detail.Fig. 1 is a kind of structural representation of the present utility model, Fig. 2 be the A-A of Fig. 1 to cutaway view, Fig. 3 is the local enlarged diagram of B portion in Fig. 1.
As seen from the figure, this boiler smoke-gas residual-heat recovering device, comprises heat exchange box 1, boiler breeze fan 51, taper flue 2, PLC controller etc.Outside its heat exchange box 1, be provided with heat-insulation layer 101, be equipped with many heat extractions exchanging tube 11 in heat exchange box 1, heat exchange box 1 sidewall and the recently distance between heat-exchange tube 11 are 50cm, so that the inner dirt of labor cleaning's heat exchange box.Heat exchange box 1 front portion is provided with isolation ward and taper flue 2, and these isolation ward 10 front ends are connected with the flared end of taper flue 2, and isolation ward 10 rear ends are connected with heat exchange box 1 and heat-exchange tube 11 front ends are comprised, and isolation ward 10 bottoms are provided with scum pipe 102.The serrated end of taper flue 2 is connected with boiler exhaust pipe 3.
The discharge pipe of boiler breeze fan 51 is connected with an air mixing tube 50, air mixing tube 50 is connected with boiler 5 burner hearths by pipeline, the middle part caliber of air mixing tube 50 shrinks, and taper flue 2 bottoms are provided with backwind tube 4, and backwind tube 4 is the most carefully located to be connected with air mixing tube 50 middle parts.Backwind tube 4 sectional areas be taper flue 2 serrated end sectional area 1/5-1/4.
Heat exchange box 1 bottom is provided with blow-off pipe 103, and heat exchange box 1 top is provided with water inlet pipe 12, and this water inlet pipe 12 is connected with water inlet water pump 14.Heat exchange box 1 side is provided with drainpipe 16, and drainpipe 16 is connected with high-pressure hydraulic pump 17, and high-pressure hydraulic pump 17 other ends are connected with boiler water tank 52 by pipeline.
Heat exchange box 1 other end is connected with the collection chamber 6 that the heat-exchange tube end mouth of pipe is comprised, and collection chamber top is provided with taper and closes up 61, and collection chamber 6 bottoms are provided with cigarette ash collecting mouth 62, and collection chamber 6 sidepieces are hinged with cover plate 3.Cover plate 63 can upwards open, so that the crock in cleaning heat-exchange tube.
Taper closing in 61 is connected with dirt pocket 7 tops by pipeline, is provided with fountain head 71 in dirt pocket 7, and dirt pocket 7 bottoms are provided with sewage draining exit 72, and the sidepiece of dirt pocket 7 is connected with smoking blower fan 8, and smoking blower fan 8 is connected with smoke exhaust pipe 9.
Heat exchange box bottom is also provided with PLC controller 19, heat exchange box 1 top is provided with liquid level detecting sensor 13, in heat exchange box 1, be provided with temperature sensor 15, liquid level detecting sensor 13, temperature sensor 15, water inlet water pump 14, high-pressure hydraulic pump equal 17 are connected with PLC controller 19.
Certainly, in the present embodiment, the serrated end of the taper at collection chamber 6 tops closing in 61 also can directly be connected with smoking blower fan 8 by pipeline.
This waste heat of boiler tail gas recycling device of this waste heat of boiler tail gas recycling device can increase the heat in flue gas the contact area of flue gas and water by heat-exchange tube, improve the heat exchange effect of flue gas and cold water, hot water after intensification returns in boiler, can fuel saving.Taper flue bottom is provided with backwind tube, and taper enlarging goes out the high-temperature flue gas of collection, is back to the air inlet of boiler after backwind tube mixes with cold air, can carry out preheating to cold air, improves fuel economy; Isolation ward can prevent after the corrosion of heat-exchange tube welding position, and water and high-temperature flue gas directly enter heat-exchange tube, collection chamber and accelerate parts corrosion in conjunction with rear; Dirt pocket adopts water curtain dedusting, can, for flue gas desulfurization, prevent air pollution, and collection chamber can be collected the solid particle in flue gas, and openable cover plate can be cleared up heat-exchange tube very easily.This waste heat recovery re-use device does not have waste heat waste, has saved production cost, has reduced pollutant emission.
Finally, it should be pointed out that above detailed description of the invention is only the more representational example of the utility model.Obviously, the utility model is not limited to above-mentioned detailed description of the invention, can also have many distortion.Any simple modification, equivalent variations and modification that every foundation technical spirit of the present utility model is done above detailed description of the invention, all should think and belong to protection domain of the present utility model.
Claims (2)
1. a boiler smoke-gas residual-heat recovering device, comprise boiler breeze fan, boiler exhaust pipe, the discharge pipe that it is characterized in that described boiler breeze fan is connected with an air mixing tube, and air mixing tube is connected with boiler furnace by pipeline, and the middle part caliber of described air mixing tube shrinks; Described boiler exhaust pipe is connected with the serrated end that changes taper flue, and described taper flue bottom is provided with backwind tube, and this backwind tube is the most carefully located to be connected with air mixing tube middle part.
2. boiler smoke-gas residual-heat recovering device according to claim 1, is characterized in that 1/5-1/4 of serrated end sectional area that described backwind tube sectional area is taper flue.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420000665.8U CN203771378U (en) | 2014-01-02 | 2014-01-02 | Device for recycling afterheat of boiler flue gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420000665.8U CN203771378U (en) | 2014-01-02 | 2014-01-02 | Device for recycling afterheat of boiler flue gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203771378U true CN203771378U (en) | 2014-08-13 |
Family
ID=51288567
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420000665.8U Expired - Fee Related CN203771378U (en) | 2014-01-02 | 2014-01-02 | Device for recycling afterheat of boiler flue gas |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203771378U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105066736A (en) * | 2015-08-14 | 2015-11-18 | 张洪飞 | Dust removing type gas heat exchanger |
-
2014
- 2014-01-02 CN CN201420000665.8U patent/CN203771378U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105066736A (en) * | 2015-08-14 | 2015-11-18 | 张洪飞 | Dust removing type gas heat exchanger |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170401 Address after: 433000 Hubei Province, Xiantao, No. 442 Shilu Patentee after: HUBEI JUFUMO MEMBRANE TECHNOLOGY Co.,Ltd. Address before: 433000 Hubei Province under the jurisdiction of the administrative unit of Xiantao Dry River Office Shuanglong Village Group Five Patentee before: Dai Mao Road |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140813 Termination date: 20220102 |