CN2898626Y - Smoke reutilizer - Google Patents
Smoke reutilizer Download PDFInfo
- Publication number
- CN2898626Y CN2898626Y CN 200620084438 CN200620084438U CN2898626Y CN 2898626 Y CN2898626 Y CN 2898626Y CN 200620084438 CN200620084438 CN 200620084438 CN 200620084438 U CN200620084438 U CN 200620084438U CN 2898626 Y CN2898626 Y CN 2898626Y
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- flue gas
- air
- flue
- gas heater
- utility
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Abstract
The utility model discloses a boiler desulfurization device, in particular to a smoke reutilizer. The smoke reutilizer comprises an air blower, a cold air channel and a boiler main body in order connection, wherein, a n air preheater is arranged on one side of the boiler main body. A dust collector is arranged in the tail flue of the boiler main body; the outlet of the tail flue is provided with an induced draft fan. The utility model is characterized in that: the cold air channel is connected with a flue gas heater; the back end of the dust collector is provided with a mixed device of flue gas and air; and a hot air channel between the flue gas heater and the mixed device of flue gas and air. The utility model has no rotating part without consuming power and using steam, and promotes air to flow through flue pressure difference. The heat transfer element of the flue gas heater is of inner strengthening heat transfer structure, greatly decreasing occupied space and reducing pipe wall temperature.
Description
(1) technical field
The utility model relates to a kind of boiler desulfurization device, particularly a kind of flue gas reheat device.
(2) background technology
Along with China harsh day by day to environmental requirement, ten hundreds of middle-size and small-size Industrial Boilers have installed wet desulphurization device additional at afterbody.The wet method separation of flow has higher desulfuration efficiency, but has brought some problems, problems such as the most outstanding is air-introduced machine band water, be stained with ash, corrosion of blade vibrations even the saturating alkali of chimney, serious threat the safety and economic operation of boiler.
For addressing the above problem, one of effective method is exactly the design and installation smoke re-heater.Wet flue gas after the desulfurization is heated up, make flue gas overheated and absorb excessive moisture, reach the purpose of dehumidifying.Adopt the alternative pattern of flue gas reheat device a lot, as flue gas by-pass method, intermediate medium flue gas heating, tandem steam reheater etc.But there is the high or unsafe shortcoming of operating cost mostly.
(3) summary of the invention
The utility model is in order to remedy the deficiencies in the prior art, and a kind of energy savings, reliable flue gas reheat device are provided.
The utility model is achieved by the following technical solution:
A kind of flue gas reheat device, comprise the pressure fan, cold air duct, the boiler body that connect successively, one side of boiler body is equipped with air preheater, in the back-end ductwork of boiler body deduster is installed, the back-end ductwork exit is provided with air-introduced machine, its special character is: described cold air duct is connected with a flue gas heater in addition, and the deduster rear end is provided with a flue gas and air mixing device, is connected hot-flow flue between flue gas heater and flue gas and the air mixing device.
Flue gas reheat device of the present utility model, it further improves and is: described flue gas heater front end, cold air duct are provided with the pipeline of a connection air preheater.
Be provided with a wave mode dehydrator in described flue gas and the air mixing device.
The heat exchange element that adopts in the described flue gas heater is warded off pipe for oozing, and is fit to the working environment in the flue.
There are following characteristics in the utility model:
1. behind the employing flue gas reheat, reduced SO
2Original discharge concentration, smoke evacuation oxygen amount slightly increases, cry quites, for the environmental monitoring index without any adverse effect.
2. in the desulfurization improvement project, do not need to change original blower fan.
3. the working media of reheat machine is air and flue gas, has not both had steam and has not also had combustible, no explosion danger;
4. reheat machine is an attachment of nonpressure parts, need not carry out intensity and calculate.
5. the heat exchange element resistance of flue gas heater is little, and the life-span is long.
6. the wave mode dehydrator in the reheat machine is that wet desulfurization system has increased the one-level dehydration.
The utility model does not have rotary part, and consumption of power is not used steam, and promote air by flue pressure reduction and flow, thereby the reliability height; Augmentation of heat transfer structure in the heat transfer element of smoke re-heater adopts reduces to take up room greatly, reduces the pipe wall temperature.The utility model is particularly suitable for medium small boiler and uses.
(4) description of drawings
Below in conjunction with accompanying drawing the utility model is further described.
Accompanying drawing is a structural representation of the present utility model.
Among the figure, 1 cold air duct, 2 pressure fans, 3 boiler bodies, 4 hot-flow flues, 5 air preheaters, 6 dedusters, 7 dehydrators, 8 back-end ductworks, 9 air-introduced machines, 10 flue gas heaters, 11 flue gases and air mixing device.
(5) specific embodiment
Accompanying drawing is a kind of specific embodiment of the present utility model.This embodiment comprises pressure fan 2, cold air duct 1, the boiler body 3 that connects successively, one side of boiler body 3 is equipped with air preheater 5, deduster 6, flue gas and air mixing device 11 are installed in the back-end ductwork 8 of boiler body 3 successively, back-end ductwork 8 exits are provided with air-introduced machine 9, cold air duct 1 is connected with a flue gas heater 10 in addition, be provided with wave mode dehydrator 7 in flue gas and the air mixing device 11, be connected hot-flow flue 4 between flue gas heater 10 and flue gas and the air mixing device 11; Flue gas heater 10 front ends, cold air duct 1 are provided with the pipeline of a connection air preheater 5.This product utilization gas-gas heat exchange principle, the hot blast of boiler air preheater outlet is taken out sub-fraction (about 5%～7%), connect flue gas heater with pipeline, absorb fume afterheat, on the basis of former outlet wind-warm syndrome, continue to be heated to high temperature, transfer out through warm-air pipe, spray into the flue gas and the air mixing device of back-end ductwork, hot blast with make processing after flue gas mixes after wet flue gas heat up 20 ℃～25 ℃, then water vapour becomes superheated steam in the flue gas, reaches the purpose that prevents flue gas cigarette dewfall.
Claims (5)
1. flue gas reheat device, comprise the pressure fan (2), cold air duct (1), the boiler body (3) that connect successively, one side of boiler body (3) is equipped with air preheater (5), in the back-end ductwork (8) of boiler body (3) deduster (6) is installed, back-end ductwork (8) exit is provided with air-introduced machine (9), it is characterized in that: described cold air duct (1) is connected with a flue gas heater (10) in addition, deduster (6) rear end is provided with a flue gas and air mixing device (11), is connected hot-flow flue (4) between flue gas heater (10) and flue gas and the air mixing device (11).
2. flue gas reheat device according to claim 1 is characterized in that: described flue gas heater (10) front end, cold air duct (1) are provided with the pipeline of a connection air preheater (5).
3. flue gas reheat device according to claim 1 is characterized in that: be provided with a dehydrator (7) in described flue gas and the air mixing device (11).
4. flue gas reheat device according to claim 3 is characterized in that: described dehydrator (7) is the wave mode dehydrator.
5. flue gas reheat device according to claim 1 is characterized in that: the heat exchange element of described flue gas heater (10) is warded off pipe for oozing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620084438 CN2898626Y (en) | 2006-05-18 | 2006-05-18 | Smoke reutilizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620084438 CN2898626Y (en) | 2006-05-18 | 2006-05-18 | Smoke reutilizer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2898626Y true CN2898626Y (en) | 2007-05-09 |
Family
ID=38073959
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620084438 Expired - Fee Related CN2898626Y (en) | 2006-05-18 | 2006-05-18 | Smoke reutilizer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2898626Y (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102121703A (en) * | 2010-12-28 | 2011-07-13 | 哈尔滨工业大学 | Mixed type flue gas reheating system suitable for wet type flue gas purification process of high-cold region |
| CN102269421A (en) * | 2011-07-08 | 2011-12-07 | 西安热工研究院有限公司 | Method and device for increasing hot air temperature of power station boiler |
| CN102635871A (en) * | 2012-04-18 | 2012-08-15 | 东方电气集团东方锅炉股份有限公司 | Method and device for solving contamination of boiler convection heating surface |
| CN102721075A (en) * | 2012-05-29 | 2012-10-10 | 中节能科技投资有限公司 | Device and method for preheating interior of dust remover |
| CN102997267A (en) * | 2012-12-19 | 2013-03-27 | 杭州国电机械设计研究院有限公司 | Smoke reheating device of combining phase-change heat exchanger with net gas heater |
| CN103032881A (en) * | 2011-09-30 | 2013-04-10 | 上海伏波环保设备有限公司 | System using extraction steam of boiler unit to heat clean smoke after desulfurization |
| CN104048307A (en) * | 2014-05-29 | 2014-09-17 | 舒少辛 | Smoke waste heat comprehensive utilization device and method |
| CN105805769A (en) * | 2016-03-24 | 2016-07-27 | 江苏联兴成套设备制造有限公司 | Operation process of pyrolysis gasifier heat-transfer oil fume heating device |
-
2006
- 2006-05-18 CN CN 200620084438 patent/CN2898626Y/en not_active Expired - Fee Related
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102121703A (en) * | 2010-12-28 | 2011-07-13 | 哈尔滨工业大学 | Mixed type flue gas reheating system suitable for wet type flue gas purification process of high-cold region |
| CN102269421A (en) * | 2011-07-08 | 2011-12-07 | 西安热工研究院有限公司 | Method and device for increasing hot air temperature of power station boiler |
| CN103032881B (en) * | 2011-09-30 | 2015-04-01 | 上海伏波环保设备有限公司 | System using extraction steam of boiler unit to heat clean smoke after desulfurization |
| CN103032881A (en) * | 2011-09-30 | 2013-04-10 | 上海伏波环保设备有限公司 | System using extraction steam of boiler unit to heat clean smoke after desulfurization |
| CN102635871B (en) * | 2012-04-18 | 2014-08-27 | 东方电气集团东方锅炉股份有限公司 | Method and device for solving contamination of boiler convection heating surface |
| CN102635871A (en) * | 2012-04-18 | 2012-08-15 | 东方电气集团东方锅炉股份有限公司 | Method and device for solving contamination of boiler convection heating surface |
| CN102721075A (en) * | 2012-05-29 | 2012-10-10 | 中节能科技投资有限公司 | Device and method for preheating interior of dust remover |
| CN102721075B (en) * | 2012-05-29 | 2015-06-03 | 中节能科技投资有限公司 | Device and method for preheating interior of dust remover |
| CN102997267A (en) * | 2012-12-19 | 2013-03-27 | 杭州国电机械设计研究院有限公司 | Smoke reheating device of combining phase-change heat exchanger with net gas heater |
| CN102997267B (en) * | 2012-12-19 | 2015-06-03 | 杭州华电能源工程有限公司 | Smoke reheating device of combining phase-change heat exchanger with net gas heater |
| CN104048307A (en) * | 2014-05-29 | 2014-09-17 | 舒少辛 | Smoke waste heat comprehensive utilization device and method |
| CN104048307B (en) * | 2014-05-29 | 2016-09-28 | 舒少辛 | A kind of device of fume afterheat comprehensive utilization |
| CN105805769A (en) * | 2016-03-24 | 2016-07-27 | 江苏联兴成套设备制造有限公司 | Operation process of pyrolysis gasifier heat-transfer oil fume heating device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |