CN205066479U - Soda recovery furnace residual heat from flue gas device - Google Patents
Soda recovery furnace residual heat from flue gas device Download PDFInfo
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- CN205066479U CN205066479U CN201520730679.XU CN201520730679U CN205066479U CN 205066479 U CN205066479 U CN 205066479U CN 201520730679 U CN201520730679 U CN 201520730679U CN 205066479 U CN205066479 U CN 205066479U
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- heat exchanger
- heat
- flue gas
- flue
- gas waste
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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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- 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
- Y02P80/00—Climate change mitigation technologies for sector-wide applications
- Y02P80/10—Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier
- Y02P80/15—On-site combined power, heat or cool generation or distribution, e.g. combined heat and power [CHP] supply
Abstract
The utility model relates to an industry waste heat utilization technical field, concretely relates to soda recovery furnace residual heat from flue gas device. The utility model discloses a first heat exchanger is equipped with a first heat exchange tube in the alkali recovery residual heat from flue gas device, has laid flue gas pipeline around the first heat exchange tube, and the flue gas transmits the waste heat for the circulation medium in the first heat exchange tube, and heat transfer efficiency is high, first heat exchange tube forms indirect transmit the flue gas waste heat of circulation circuit through the heat exchange tube with the second heat exchanger and heats the material for treating in the heating pipe of second heat exchanger, can pass through to adjust the temperature indirect control heating temperature of circulating water.
Description
Technical field
The utility model relates to industrial exhaust heat and utilizes technical field, is specifically related to a kind of alkali recovery furnace flue gas waste heat recovery apparatus.
Background technology
Energy-saving and emission-reduction have become the basis of human society survival and development.Boiler provided the energy both to our productive life, turn increase the discharge to greenhouse gases simultaneously, the discharge how reducing residual heat from boiler fume has become the important topic of pendulum in face of human society, just be equivalent to once the exhaust gas temperature reducing boiler the thermal efficiency that improve boiler, also reduce the greenhouse effects of air simultaneously.
The heat loss of boiler mainly contains: flue gas loss, carry-over loss, preserving heat and radiating heat loss, the imperfect combustion loss of fuel etc.And flue gas loss accounts for 70 ~ 80% of whole heat loss, high fume temperature is one of main index of boiler heat loss.For a long time, the corrosion that the back-end surfaces of boiler causes due to low temperature condensation occurs often, is difficult to avoid.To such an extent as to have at present to alleviate by improving exhaust gas temperature the generation of condensation and corrosion phenomenon when boiler design, and improve merely the waste that exhaust gas temperature certainly will cause a large amount of low-temperature energy sources, increase the weight of the destruction to environment simultaneously.
Often reduce exhaust gas temperature 15 DEG C through preresearch estimates, boiler thermal output 1% can be improved.If exhaust gas temperature is reduced by 30 DEG C-50 DEG C, then can improve more than boiler thermal output 2%-3%, economic benefit is considerable.What save is economic benefit, and what embody is the reduction of unit cost, and what show is exactly the competitiveness of enterprise.
The exhaust gas temperature of general boiler, all more than 160 °, enters in air and can form the phenomenons such as acid rain around, if can reduce exhaust gas temperature, on the one hand both to environmental benefits, has again objective economic benefit on the other hand.
Given this, overcome above defect of the prior art, provide a kind of alkali collection flue gas waste heat recovery apparatus to become this area technical problem urgently to be resolved hurrily.
Summary of the invention
The purpose of this utility model is the above-mentioned defect for prior art, provides a kind of alkali collection flue gas waste heat recovery apparatus.
The purpose of this utility model realizes by following technical measures:
A kind of alkali recovery furnace flue gas waste heat recovery apparatus, compared with prior art, its difference is, this device comprises:
First Heat Exchanger, comprises heat exchanger shell, vertically runs through the first heat exchanger tube that described housing is arranged and the first flue be laid in around described first heat exchanger tube;
Second heat exchanger, comprise the second heat exchanger tube be placed in described second heat exchanger heat exchanging chamber and the heating tube be placed in heat exchanging chamber, the first heat exchanger tube of the water inlet pipe of described second heat exchanger tube and outlet pipe and described First Heat Exchanger is connected to form a closed circuit;
Be located at the water circulating pump on described closed circuit;
Be located at the first disc valve on the first flue air inlet and outlet pipe and the second disc valve respectively;
And
The second flue be arranged in parallel with described first flue, described second flue is provided with three-at om system valve.
Preferably, described second heat exchanger is plate type heat exchanger or pipe heat exchanger.
Preferably, described first flue is horizontal.
Preferably, described first flue is arranged vertically.
Preferably, described closed circuit is provided with temperature control modules.
Preferably, described first heat exchanger tube is finned tube.
In alkali collection flue gas waste heat recovery apparatus of the present utility model, First Heat Exchanger is provided with the first heat exchanger tube, is laid with flue around the first heat exchanger tube, and waste heat is passed to the circulatory mediator in the first heat exchanger tube by flue gas, and heat transfer efficiency is high; Fume afterheat is passed to material to be heated in the heating tube of the second heat exchanger by forming closed circuit with the heat exchanger tube of the second heat exchanger by the first heat exchanger tube indirectly, can by regulating the temperature indirect regulation heating-up temperature of circulatory mediator.
Accompanying drawing explanation
Fig. 1 is the structural representation of the alkali collection flue gas waste heat recovery apparatus of the utility model embodiment.
Detailed description of the invention
In order to make the purpose of this utility model, technical scheme and advantage clearly understand, below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.Should be appreciated that specific embodiment described herein only in order to explain the utility model, and be not used in restriction the utility model.
Refer to shown in Fig. 1, illustrate the structural representation of the alkali collection flue gas waste heat recovery apparatus 100 of a preferred embodiment of the present utility model.The alkali collection flue gas waste heat recovery apparatus 100 that this description institute accompanying drawings is painted and dependency structure thereof, ratio, size etc., content all only in order to coordinate description to disclose, understand for person skilled in the art scholar and read, and be not used to limit the enforceable qualifications of the utility model, therefore the not technical essential meaning of tool, the modification of any structure, the change of proportionate relationship or size, the adjustment of quantity, do not affecting under effect that alkali collection flue gas waste heat recovery apparatus 100 of the present utility model can produce and the object that can reach, all should still drop in scope that technology contents that the utility model discloses covers.Simultaneously, quote in this description as " on ", D score, "left", "right", " centre " and " one " etc. term, only clear for the ease of describing, and be not used to limit the enforceable scope of the utility model, the change of its relativeness or adjustment, under changing technology contents without essence, when being also considered as the enforceable category of the utility model.
Refer to shown in Fig. 1, the alkali collection flue gas waste heat recovery system 100 of the utility model embodiment comprises: First Heat Exchanger 10, second heat exchanger 20, water circulating pump 30, second flue 40, first disc valve 51, second disc valve 52, three-at om system valve 53 and temperature control modules 60.
Wherein, First Heat Exchanger 10 comprises heat exchanger shell 101, first heat exchanger tube 102 and the first flue (not shown), first heat exchanger tube 102 vertically runs through heat exchanger shell 101 and arranges, and the first flue (not shown) is laid in around the first heat exchanger tube 102.Second heat exchanger 20 comprises the second heat exchanger tube 201 and heating tube 202, second heat exchanger tube 201 is placed in described second heat exchanger 20 heat exchanging chamber, heating tube 202 is also placed in heat exchanging chamber, and the first heat exchanger tube 102 of the water inlet pipe of described second heat exchanger tube 201 and outlet pipe and described First Heat Exchanger 10 is connected to form a closed circuit.Water circulating pump 30 is located on above-mentioned closed circuit.On the air inlet pipeline that the first flue (not shown) is located at respectively by first disc valve 51 and the second disc valve 52 and outlet pipe.Second flue 40 is arranged in parallel with described first flue (not shown), and three-at om system valve 53 is located on the second flue 40.
In one preferred embodiment, described second heat exchanger 20 is plate type heat exchanger or pipe heat exchanger (being plate type heat exchanger when the circulatory mediator in closed circuit is water, is pipe heat exchanger when the circulatory mediator in closed circuit is vapour); First flue 103 can adopt horizontal mode also can adopt mode arranged vertically; Temperature control modules 60 is arranged on closed circuit, for detecting the temperature of circulatory mediator; In one preferred embodiment, the first heat exchanger tube 102 has fin structure, is finned tube.
The acid dew piont corrosion of heat exchanger heating surface is avoided completely higher than acid dew point, the wall temperature of the first heat exchanger tube 102 outer wall and material to be heated (low-temperature receiver) temperature independence by the temperature that controls to enter circulatory mediator in First Heat Exchanger and the second heat exchanger; When sink temperature is low, the device 100 of the present embodiment can reclaim more heats; The heat reclaimed, by the recirculated water multiple low-temperature receiver of indirect simultaneously, such as, can heat demineralized water, DNCG, tail gas.In addition, fume afterheat is passed to material to be heated in the heating tube of the second heat exchanger by forming closed circuit with the heat exchanger tube of the second heat exchanger by the first heat exchanger tube indirectly, can by regulating the temperature indirect regulation heating-up temperature of recirculated water.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all do within spirit of the present utility model and principle any amendment, equivalent to replace and improvement etc., all should be included within protection domain of the present utility model.
Claims (6)
1. an alkali recovery furnace flue gas waste heat recovery apparatus, is characterized in that, this device comprises:
First Heat Exchanger, comprises heat exchanger shell, vertically runs through the first heat exchanger tube that described housing is arranged and the first flue be laid in around described first heat exchanger tube;
Second heat exchanger, comprise the second heat exchanger tube be placed in described second heat exchanger heat exchanging chamber and the heating tube be placed in heat exchanging chamber, the first heat exchanger tube of the water inlet pipe of described second heat exchanger tube and outlet pipe and described First Heat Exchanger is connected to form a closed circuit;
Be located at the water circulating pump on described closed circuit;
Be located at the first disc valve on the first flue air inlet and outlet pipe and the second disc valve respectively;
And
The second flue be arranged in parallel with described first flue, described second flue is provided with three-at om system valve.
2. alkali recovery furnace flue gas waste heat recovery apparatus according to claim 1, is characterized in that, described second heat exchanger is plate type heat exchanger or pipe heat exchanger.
3. alkali recovery furnace flue gas waste heat recovery apparatus according to claim 1, is characterized in that, described first flue is horizontal.
4. alkali recovery furnace flue gas waste heat recovery apparatus according to claim 1, is characterized in that, described first flue is arranged vertically.
5. alkali recovery furnace flue gas waste heat recovery apparatus according to claim 1, is characterized in that, described closed circuit is provided with temperature control modules.
6. alkali recovery furnace flue gas waste heat recovery apparatus according to claim 1, is characterized in that, described first heat exchanger tube is finned tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520730679.XU CN205066479U (en) | 2015-09-21 | 2015-09-21 | Soda recovery furnace residual heat from flue gas device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520730679.XU CN205066479U (en) | 2015-09-21 | 2015-09-21 | Soda recovery furnace residual heat from flue gas device |
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| Publication Number | Publication Date |
|---|---|
| CN205066479U true CN205066479U (en) | 2016-03-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520730679.XU Active CN205066479U (en) | 2015-09-21 | 2015-09-21 | Soda recovery furnace residual heat from flue gas device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105749740A (en) * | 2016-04-27 | 2016-07-13 | 武汉凯比思电力设备有限公司 | Alkali recovery boiler low-temperature denitration system and process |
-
2015
- 2015-09-21 CN CN201520730679.XU patent/CN205066479U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105749740A (en) * | 2016-04-27 | 2016-07-13 | 武汉凯比思电力设备有限公司 | Alkali recovery boiler low-temperature denitration system and process |
| CN105749740B (en) * | 2016-04-27 | 2018-06-19 | 武汉凯比思电力设备有限公司 | Alkali recovery boiler low-temperature denitrifying system and technique |
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| GR01 | Patent grant |