CN201748404U - Boiler flue gas waste heat recovery device - Google Patents
Boiler flue gas waste heat recovery device Download PDFInfo
- Publication number
- CN201748404U CN201748404U CN2010205109667U CN201020510966U CN201748404U CN 201748404 U CN201748404 U CN 201748404U CN 2010205109667 U CN2010205109667 U CN 2010205109667U CN 201020510966 U CN201020510966 U CN 201020510966U CN 201748404 U CN201748404 U CN 201748404U
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- water
- heat exchanger
- circulating
- gas
- retracting device
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Abstract
A boiler flue gas waste heat recovery device comprises a recovery loop for recovering the flue gas waste heat by utilizing circulating water, and a heating loop for heating water by utilizing the circulating water after the flue gas waste heat recovery. The boiler flue gas waste heat recovery device has high flue gas waste heat recovery efficiency and is beneficial to the safe operation of the boiler.
Description
Technical field
The utility model relates to a kind of energy-saving emission-reducing apparatus, is a kind of residual heat from boiler fume retracting device specifically.It mainly is to heat the purpose that another water system reaches efficient flue gas waste heat recovery after utilizing a closed circle water system to absorb fume afterheat.
Background technology
Energy-saving and emission-reduction, low-carbon economy, recycling be the action of actively advocating in the world, carrying out at present, boiler tail flue gas is the main path of boiler thermal loss.Flue gas waste heat recovery mainly is to convert utilizable heat to by the heat that certain heat exchange mode carries flue gas, conventional process flow just is provided with an air-water heat exchanger and reclaims fume afterheat, significant disadvantage is: if 1 inflow temperature is higher, then can not fully reclaim fume afterheat; If 2 inflow temperatures are on the low side, the flue gas exhaust gas temperature might be lower than acid dew-point temperature and produce acid corrosion, then influences the life-span of equipment; 3, as interrupting the water source, then whole device is ended.
Summary of the invention
The purpose of this utility model provides a kind of flue gas waste heat recovery efficient height and can help the residual heat from boiler fume retracting device of safe operation of the boiler,
The residual heat from boiler fume retracting device that the utility model provides, it comprises the recovery loop that utilizes recirculated water that fume afterheat is reclaimed, and the recirculated water behind the utilization recovery fume afterheat is to the heating circuit that water is heated of needs heating.
The gas-water heat exchanger that reclaims the loop has smoke inlet, exhanst gas outlet and recirculated water inlet, circulating water outlet; The water-water heat exchanger of heating circuit has the water inlet of use, use water out and recirculated water inlet, circulating water outlet; The circulating water outlet of gas-water heat exchanger is through the recirculated water inlet of circulating water pipe water receiving-water-to-water heat exchanger, and the circulating water outlet of water-water heat exchanger connects the recirculated water inlet of gas-water heat exchanger through circulating water pipe; On circulating water pipe, be connected to water circulating pump and water tank.
The gas-water heat exchanger can be light pipe, heat pipe or fin-tube heat exchanger.
Water-water heat exchanger can be tubular type or plate type heat exchanger.
On the use water inlet of circulating water pipe that reclaims the loop and heating circuit, control valve is installed all.
General boiler tail flue gas exhaust gas temperature fluctuation is little, reclaims the loop air-water low-level (stack-gas) economizer is set, and adopts closed cycle water, and Inlet and outlet water temperature and flue gas turnover temperature all keeps within the specific limits like this; Heating circuit is provided with water-water heat exchanger, can adopt open type water or enclosed water, and heated water can be used as boiler water-filling or domestic water.
Reclaim the loop and adopted enclosed water, the fume afterheat utilization has had continuation; Heating circuit adopts open type water, and heated water can be disposed flexibly, and water temperature also can be regulated as required.
The utility model helps safe operation of the boiler to boiler tail flue gas waste heat recovery efficient height.
Description of drawings
Fig. 1 is a process chart of the present utility model.
The specific embodiment
With reference to Fig. 1, the residual heat from boiler fume retracting device, it comprises the recovery loop that utilizes recirculated water that fume afterheat is reclaimed, and the recirculated water behind the utilization recovery fume afterheat is to the heating circuit that water is heated of needs heating.
The gas-water heat exchanger 1 that reclaims the loop has smoke inlet 12, exhanst gas outlet 14 and recirculated water inlet 2, circulating water outlet 13; The water-water heat exchanger 9 of heating circuit has the water inlet 8 of use, use water out 10 and recirculated water inlet 11, circulating water outlet 7; The circulating water outlet 13 of gas-water heat exchanger 1 is through the recirculated water inlet of circulating water pipe 4 water receivings-water-to-water heat exchanger 11, and the circulating water outlet 7 of water-water heat exchanger 11 connects the recirculated water inlet 2 of gas-water heat exchanger 1 through circulating water pipe 4; On circulating water pipe 4, be connected to water circulating pump 5 and water tank 6.Wherein, gas-water heat exchanger 1 adopts fin-tube heat exchanger, and water-water heat exchanger 9 adopts plate type heat exchanger.
On the use water inlet 8 of circulating water pipe 4 that reclaims the loop and heating circuit, control valve 3 is installed all, control valve 3 is the temperature control valve, water temperature can be controlled flexibly by flow, the circulation of being convenient to when water temperature is lower than acid dew-point temperature, cut off the water supply automatically, treat progressively to open again after temperature raises, make equipment can not produce the low temperature acid etching.
In addition, gas-water heat exchanger 1 will guarantee that the flue gas full flow passes through, and only need cut off during the system failure and reclaim the water source, loop, and system normally moves, and reclaims the soft water of the hydromining in loop with chemical treatment.
Claims (6)
1. a residual heat from boiler fume retracting device is characterized in that it comprises the recovery loop that utilizes recirculated water that fume afterheat is reclaimed, and the recirculated water behind the utilization recovery fume afterheat is to the heating circuit that water is heated of needs heating.
2. residual heat from boiler fume retracting device according to claim 1 is characterized in that the gas-water heat exchanger [1] that reclaims the loop has smoke inlet [12], exhanst gas outlet [14] and recirculated water inlet [2], circulating water outlet [13]; The water-water heat exchanger of heating circuit [9] has use water inlet [8], uses water out [10] and recirculated water inlet [11], circulating water outlet [7]; The circulating water outlet [13] of gas-water heat exchanger [1] is through the recirculated water inlet of circulating water pipe [4] water receiving-water-to-water heat exchanger [11], and the circulating water outlet [7] of water-water heat exchanger [11] connects the recirculated water inlet [2] of gas-water heat exchanger [1] through circulating water pipe [4]; On circulating water pipe [4], be connected to water circulating pump [5] and water tank [6].
3. residual heat from boiler fume retracting device according to claim 2 is characterized in that gas-water heat exchanger [1] is light pipe, heat pipe or fin-tube heat exchanger.
4. residual heat from boiler fume retracting device according to claim 2 is characterized in that water-water heat exchanger [9] is tubular type or plate type heat exchanger.
5. residual heat from boiler fume retracting device according to claim 2 is characterized in that on the use water inlet [8] of circulating water pipe [4] that reclaims the loop and heating circuit control valve [3] being installed all.
6. residual heat from boiler fume retracting device according to claim 5 is characterized in that described control valve [3] is the temperature control valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205109667U CN201748404U (en) | 2010-08-31 | 2010-08-31 | Boiler flue gas waste heat recovery device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205109667U CN201748404U (en) | 2010-08-31 | 2010-08-31 | Boiler flue gas waste heat recovery device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201748404U true CN201748404U (en) | 2011-02-16 |
Family
ID=43583079
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205109667U Expired - Fee Related CN201748404U (en) | 2010-08-31 | 2010-08-31 | Boiler flue gas waste heat recovery device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201748404U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103175188A (en) * | 2011-12-20 | 2013-06-26 | 上海康洪精密机械有限公司 | Closed circulation type coaleconomizer |
| CN104523144A (en) * | 2014-12-11 | 2015-04-22 | 天津大学 | Integral type soybean milk furnace with flue gas residual heat recycling function |
| CN107726870A (en) * | 2017-10-23 | 2018-02-23 | 北京和然益华节能科技有限责任公司 | Copper smelting plant flue gas waste heat recovery system and application method |
-
2010
- 2010-08-31 CN CN2010205109667U patent/CN201748404U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103175188A (en) * | 2011-12-20 | 2013-06-26 | 上海康洪精密机械有限公司 | Closed circulation type coaleconomizer |
| CN104523144A (en) * | 2014-12-11 | 2015-04-22 | 天津大学 | Integral type soybean milk furnace with flue gas residual heat recycling function |
| CN104523144B (en) * | 2014-12-11 | 2017-02-22 | 天津大学 | Integral type soybean milk furnace with flue gas residual heat recycling function |
| CN107726870A (en) * | 2017-10-23 | 2018-02-23 | 北京和然益华节能科技有限责任公司 | Copper smelting plant flue gas waste heat recovery system and application method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110216 Termination date: 20170831 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |