CN202494345U - Industrial furnace waste heat recovery system - Google Patents
Industrial furnace waste heat recovery system Download PDFInfo
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- CN202494345U CN202494345U CN2012200974611U CN201220097461U CN202494345U CN 202494345 U CN202494345 U CN 202494345U CN 2012200974611 U CN2012200974611 U CN 2012200974611U CN 201220097461 U CN201220097461 U CN 201220097461U CN 202494345 U CN202494345 U CN 202494345U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
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Abstract
The utility model discloses an industrial furnace waste heat recovery system. The industrial furnace waste heat recovery system comprises an entire smoke-discharge channel and a waste heat recovery device which is composed of a primary heat exchange device and a secondary heat exchange device. The primary heat exchange device is a gas / water heat exchanger which is connected with the entire smoke-discharge channel in series and is provided with a water inlet and a water outlet. The secondary heat exchange device is a water / water heat exchanger which is provided with a first level water inlet, a first level water outlet, a second level water inlet and a second level water outlet. The water outlet of the gas / water heat exchanger is communicated with the first level water inlet of the water / water heat exchanger. The first level water outlet of the water / water heat exchanger is communicated with the water inlet of the gas / water heat exchanger. A cool water pipeline to be heated is communicated with the second level water inlet of the water / water heat exchanger. The second level water outlet of the water / water heat exchanger is communicated with a heat storage pool through a hot-water pipeline. The industrial furnace waste heat recovery system has the advantages of being simple in structure, high in efficiency of waste heat utilization, capable of effectively lowering industrial furnace smoke-discharge temperature to about 130 DEG C, and capable of obtaining water at 60 DEG C to meet water supplying and heating requirements of people.
Description
Technical field
The utility model relates to the waste heat recovery of industrial combustion gas (fuel oil) stove high-temperature flue gas, especially relates to a kind of industrial furnace residual neat recovering system.
Background technology
At present the energy of China 90% is from chemical fuel, and this form in a short time (15-20) can not change.Because China is a resource-starved country; Need a large amount of import energy with the support high-speed needs of economic development; And the energy is controlled through the forward market by developed country to a great extent; In order to reduce in energy problem the undue dependence of other country, energy-conservationly receive the attention of government as a practicable strategy, and proposed a kind of new theory: " energy-conservation " also is a kind of important energy source.
The outstanding aspect of practicing thrift heat energy reclaims and utilizes waste heat exactly.The flue gas that industrial combustion gas (fuel oil) stove produces in process of production is through the exhaust gas temperature still higher (can reach 350-700 ℃) after UTILIZATION OF VESIDUAL HEAT IN of industrial furnace; The flue gas that temperature is reached 350-700 ℃ directly is emitted in the atmosphere; Both wasted the energy, again contaminated environment.If can exhaust gas temperature be reduced to below 180 ℃ (even lower), then both can reach energy-saving and emission-reduction, reduce the production run cost, can play the purpose of the quality of improving the people's livelihood again.
The coke oven of at present domestic large-scale steel plant can be accomplished to utilize waste heat to generate electricity.But China's metallic heat treating furnace of also having large quantities of scales to differ simultaneously, power megawatt from hundreds of to a few does not wait.Because the thermal efficiency of heat-treatment furnace is merely about 50%, how very great practical significance to be arranged to this part UTILIZATION OF VESIDUAL HEAT IN well.
Summary of the invention
The purpose of the utility model is to provide a kind of industrial furnace residual neat recovering system, and it can fully reclaim the high-temperature flue gas that discharges in the industrial furnace production, reaches good energy-conservation purpose.
For realizing above-mentioned purpose, the utility model can be taked following technical proposals:
The described industrial furnace residual neat recovering system of the utility model; Comprise total discharge flue of being connected with a plurality of industrial furnace smokejacks and be connected the waste-heat recovery device on said total discharge flue that said waste-heat recovery device is made up of heat-exchanger rig and two times heat changing device through smoke exhaust fan; A said heat-exchanger rig is for to be connected on the gas/water-to-water heat exchanger that has intake-outlet on total discharge flue through control valve, and said two times heat changing device is the water/water-to-water heat exchanger that has one-level intake-outlet and secondary intake-outlet; The delivery port of said gas/water-to-water heat exchanger is connected with the one-level water inlet of water/water-to-water heat exchanger through pipeline, and the one-level delivery port of said water/water-to-water heat exchanger is connected with the water inlet of said gas/water-to-water heat exchanger through pipeline and the circulating pump that is arranged on the said pipeline; Cold water pipeline to be heated is connected with the secondary water inlet of said water/water-to-water heat exchanger through valve, and the secondary effluent mouth of said water/water-to-water heat exchanger is connected with the thermal storage tank with the water pump that is arranged on this hot water line through the hot water line.
Said gas/water-to-water heat exchanger is a heat exchange of heat pipe, and said water/water-to-water heat exchanger is a plate type heat exchanger.
Total discharge flue behind the said smoke exhaust fan is gentle/be provided with bypass smoke evacuation branch road between the discharge flue at water-to-water heat exchanger exhaust opening rear portion, and said bypass smoke evacuation branch road is provided with by-pass valve control.
Said cold water pipeline to be heated comprises circulation line of drawing from cistern that is connected in parallel and the water pipe of being introduced by the running water pipe network.
That the advantage of the utility model is is simple in structure, utilization rate of waste heat is high, when effectively reducing to the industrial furnace smog discharge temperature about 130 ℃, can also obtain water supply and heating demand that 60 ℃ hot water satisfies people.
Description of drawings
Fig. 1 is the systematic schematic diagram of the utility model.
The specific embodiment
As shown in Figure 1; The described industrial furnace residual neat recovering system of the utility model; Comprise total discharge flue 2 of being connected with a plurality of industrial furnace 1 smokejacks and be connected the waste-heat recovery device on total discharge flue 2 that said waste-heat recovery device is made up of heat-exchanger rig and two times heat changing device through smoke exhaust fan 3; A heat-exchanger rig is for to be connected on the heat pipe gas/water-to-water heat exchanger 5 that has intake-outlet on total discharge flue 2 through control valve 4, and two times heat changing device is the board-like water/water-to-water heat exchanger 6 that has one-level intake-outlet and secondary intake-outlet; The delivery port of heat pipe gas/water-to-water heat exchanger 5 is connected with the one-level water inlet of board-like water/water-to-water heat exchanger 6 through pipeline, and the one-level delivery port of board-like water/water-to-water heat exchanger 6 is connected with the water inlet of heat pipe gas/water-to-water heat exchanger 5 with safety valve 14 through pipeline and the circulating pump 7 that is arranged on the pipeline; Circulation line 12 of drawing from cistern 9 that is connected in parallel and the water pipe of being introduced by the running water pipe network 13 are connected with the secondary water inlet of heat pipe water/water-to-water heat exchanger 6 through valve, and the secondary effluent mouth of board-like water/water-to-water heat exchanger 6 is connected with thermal storage tank 9 through hot water line and the water pump 8 that is arranged on this hot water line; Between the discharge flue at the total discharge flue behind the smoke exhaust fan 3 and heat pipe gas/water-to-water heat exchanger 5 exhaust opening rear portions, be provided with bypass smoke evacuation branch road 10, bypass smoke evacuation branch road 10 is provided with by-pass valve control 11.
During the utility model work; The high temperature of many heating furnaces 1 smoke evacuation total discharge flue 2 of Cheng Yigen that confluxes is carried out forced fume exhaust; Through its smoke evacuation pressure of frequency conversion smoke exhaust fan 3 controls, be connected in series to heat-pipe heat exchanger 5 on total discharge flue 2, a pair of intake-outlet of heat exchanger 5 connects demineralized water; Make it carry out heat exchange with circulating pump 7, obtain the highest 120 ℃ hot mastication water through heat exchanger 5 circulations; Carry out secondary heat exchange to hot mastication water through plate type heat exchanger 6, plate type heat exchanger 6 other a pair of intake-outlets connect running water or cistern 9 respectively, and the hot water that obtains about 60 ℃ deposits cistern 9 in, supply heating or life to use.Cistern 9 can cushion the pressure of water use peak phase.Hot water in cistern 9 is full, when water temperature surpasses 70 ℃, can close residual neat recovering system, directly drains flue gas through bypass smoke evacuation branch road 10.
Claims (4)
1. industrial furnace residual neat recovering system; Comprise total discharge flue (2) of being connected with a plurality of industrial furnaces (1) smokejack and be connected the waste-heat recovery device on said total discharge flue (2) through smoke exhaust fan (3), it is characterized in that: said waste-heat recovery device is made up of heat-exchanger rig and two times heat changing device; A said heat-exchanger rig is for to be connected on the gas/water-to-water heat exchanger that has intake-outlet (5) on total discharge flue (2) through control valve (4), and said two times heat changing device is the water/water-to-water heat exchanger (6) that has one-level intake-outlet and secondary intake-outlet; The delivery port of said gas/water-to-water heat exchanger (5) is connected through the one-level water inlet of pipeline with water/water-to-water heat exchanger (6), and the one-level delivery port of said water/water-to-water heat exchanger (6) is connected with the water inlet of said gas/water-to-water heat exchanger (5) through pipeline and the circulating pump (7) that is arranged on the said pipeline; Cold water pipeline to be heated is connected through the secondary water inlet of valve with said water/water-to-water heat exchanger (6), and the secondary effluent mouth of said water/water-to-water heat exchanger (6) is connected with thermal storage tank (9) with the water pump (8) that is arranged on this hot water line through the hot water line.
2. industrial furnace residual neat recovering system according to claim 1 is characterized in that: said gas/water-to-water heat exchanger (5) is a heat exchange of heat pipe, and said water/water-to-water heat exchanger (6) is a plate type heat exchanger.
3. industrial furnace residual neat recovering system according to claim 1 and 2; It is characterized in that: the total discharge flue behind the said smoke exhaust fan (3) is gentle/be provided with bypass smoke evacuation branch road (10) between the discharge flue at water-to-water heat exchanger (5) exhaust opening rear portion, said bypass smoke evacuation branch road (10) is provided with by-pass valve control (11).
4. industrial furnace residual neat recovering system according to claim 1 is characterized in that: said cold water pipeline to be heated comprises circulation line (12) of drawing from cistern (9) that is connected in parallel and the water pipe of being introduced by the running water pipe network (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200974611U CN202494345U (en) | 2012-03-15 | 2012-03-15 | Industrial furnace waste heat recovery system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200974611U CN202494345U (en) | 2012-03-15 | 2012-03-15 | Industrial furnace waste heat recovery system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202494345U true CN202494345U (en) | 2012-10-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200974611U Expired - Lifetime CN202494345U (en) | 2012-03-15 | 2012-03-15 | Industrial furnace waste heat recovery system |
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| Country | Link |
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| CN (1) | CN202494345U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103673649A (en) * | 2013-12-16 | 2014-03-26 | 机械工业第六设计研究院有限公司 | Waste heat recovery and comprehensive utilization system of industrial furnace group |
| CN104294013A (en) * | 2014-09-10 | 2015-01-21 | 浙江长兴正达电炉制造有限公司 | Continuous mesh belt tempering heating furnace |
| CN104294017A (en) * | 2014-09-10 | 2015-01-21 | 浙江长兴正达电炉制造有限公司 | Continuous mesh belt quenching furnace capable of recovering waste heat |
| CN105135898A (en) * | 2015-09-21 | 2015-12-09 | 宝钢发展有限公司 | Smoke energy cyclic utilization system of rotary hearth furnace |
| CN106435201A (en) * | 2016-10-09 | 2017-02-22 | 云南冶金新立钛业有限公司 | Reaction system used for producing high titanium slag |
| CN106796086A (en) * | 2014-06-04 | 2017-05-31 | 斯蒂-B及T集团股份公司 | For the heat exchanger of industrial furnace |
-
2012
- 2012-03-15 CN CN2012200974611U patent/CN202494345U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103673649A (en) * | 2013-12-16 | 2014-03-26 | 机械工业第六设计研究院有限公司 | Waste heat recovery and comprehensive utilization system of industrial furnace group |
| CN106796086A (en) * | 2014-06-04 | 2017-05-31 | 斯蒂-B及T集团股份公司 | For the heat exchanger of industrial furnace |
| CN104294013A (en) * | 2014-09-10 | 2015-01-21 | 浙江长兴正达电炉制造有限公司 | Continuous mesh belt tempering heating furnace |
| CN104294017A (en) * | 2014-09-10 | 2015-01-21 | 浙江长兴正达电炉制造有限公司 | Continuous mesh belt quenching furnace capable of recovering waste heat |
| CN105135898A (en) * | 2015-09-21 | 2015-12-09 | 宝钢发展有限公司 | Smoke energy cyclic utilization system of rotary hearth furnace |
| CN106435201A (en) * | 2016-10-09 | 2017-02-22 | 云南冶金新立钛业有限公司 | Reaction system used for producing high titanium slag |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121017 |