CN102080936A - Residual heat recovery device of industrial waste gas - Google Patents
Residual heat recovery device of industrial waste gas Download PDFInfo
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- CN102080936A CN102080936A CN 201110004870 CN201110004870A CN102080936A CN 102080936 A CN102080936 A CN 102080936A CN 201110004870 CN201110004870 CN 201110004870 CN 201110004870 A CN201110004870 A CN 201110004870A CN 102080936 A CN102080936 A CN 102080936A
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Abstract
The invention discloses a residual heat recovery device of industrial waste gas which comprises a box body, a heat exchanger, a waste gas inlet, a fresh gas outlet, a waste gas outlet and a fresh gas inlet, wherein the heat exchanger is arranged in the inner part of the box body; the waste gas inlet and the fresh gas outlet are positioned at the same side of the box body; the waste gas outlet and the fresh gas inlet are positioned at the other side corresponding to the waste gas inlet; the heat exchanger is provided with a waste gas channel and fresh air channel which are isolated mutually, adjacent and perform heat exchange; one end of the waste gas channel is communicated with the waste gas inlet, and the other end of the waste gas channel is communicated with the waste gas outlet; and one end of the fresh air channel is communicated with the fresh air inlet, and the other end of the fresh air channel is communicated with the fresh air inlet.
Description
Technical field
The present invention relates to a kind of waste-heat recovery device of industrial waste gas.
Background technology
In industrial production, can produce a large amount of industrial waste gases, these industrial waste gas typical temperatures are all very high, the for example boiler that uses in the industrial production, blast furnace, their flue-gas temperature is generally at two, 300 degree, that have even higher, it is very unfortunate that the diffusing high-temperature flue gas institute heat content in atmosphere of these rows is not used.And by waste gas afterheat recovery unit, can reclaim fume afterheat effectively and be used,, improve and advance the stove air themperature to add hot-air as the air-air type heat exchanger, also can dry former, auxiliary material etc.; Gas-liquid heat-exchange is to utilize fume afterheat to add hot water, can be used for producing using hot water.The energy-saving potential of energy recovery technology occupies second in 15 kinds of power-saving technologies of the best that USDOE promotes, and its pay off period is about 2 years.
In the air-air type waste-heat recovery device, flow through the separately different paths of heat exchanger of high-temp waste gas and new wind to be heated, the heat energy in the high-temp waste gas is transferred in the new wind through the inside heat conducting element of heat exchanger, and self temperature reduces, new wind-warm syndrome degree raises, thereby finishes heat exchanging process.
The gas gas waste-heat recovery device of prior art adopts vertical current exchanged form or following current heat exchange method, and the vertical current exchanged form is that the airflow direction of high-temp waste gas is vertical with the airflow direction of new wind, and such exchanged form efficient is lower; The following current exchanged form is that the airflow direction of new wind and high-temp waste gas is identical, and the new wind in air inlet place and the high-temp waste gas temperature difference are bigger, through heat exchange, substantially equate with the temperature of waste gas at the new wind in air outlet place, as can be seen, whole process can only be carried out a heat exchange, and efficient is lower.
Summary of the invention
For overcoming above-mentioned shortcoming, the object of the present invention is to provide the waste-heat recovery device of the higher industrial waste gas of a kind of heat exchanger effectiveness.
In order to reach above purpose, the technical solution used in the present invention is: a kind of waste-heat recovery device of industrial waste gas, it comprises casing, be arranged on the heat exchanger of this box house, be positioned at the waste gas air inlet and the new wind air outlet of casing the same side, be positioned at the waste gas air outlet and the new wind air inlet of the opposite side of waste gas air inlet correspondence, heat exchanger has mutual isolation but is adjacent, carry out the exhaust steam passage and the new wind passage of heat exchange, one end of exhaust steam passage communicates with the waste gas air inlet, the other end communicates with the waste gas air outlet, one end of new wind passage communicates with new wind air inlet, and the other end communicates with new wind air outlet.
Preferably, new wind air inlet is positioned at the top of waste gas air outlet.
More preferably, new wind air outlet is positioned at the top of waste gas air inlet.
Preferably, new wind passage is a U-shaped.
Further, exhaust steam passage is some circular heat exchanger tubes that are horizontally disposed with and pass new wind passage.
A nearlyer step ground, exhaust steam passage is a thin-wall stainless steel.
Preferably, casing is provided with first reducer pipe that connects exhaust steam passage and waste gas air inlet, so that different exhaust steam passage and the waste gas air inlets of cross sectional shape is connected.
More preferably, casing is provided with second reducer pipe that connects exhaust steam passage and waste gas air outlet, so that different exhaust steam passage and the waste gas air outlets of cross sectional shape is connected.
Further, new wind air inlet is provided with pressure fan.
Owing to adopted technique scheme, the waste-heat recovery device of industrial waste gas of the present invention, the heat exchange method that is adopted are counterflow exchange, and promptly new wind is opposite with the flow direction of high-temp waste gas.New wind enters heat exchanger by pressure fan, flow out from new wind air outlet through the new wind passage of U type, high-temp waste gas enters heat exchanger by the waste gas air inlet, through passing the new wind passage of new wind passage, carry out heat exchange with new wind, flow out by the waste gas air outlet again, because the waste gas air inlet is arranged on the same side with new wind air outlet, still there is the temperature difference without the high-temp waste gas of crossing heat exchange and through the new wind after the heat exchange intensification, similarly, the waste gas air outlet is arranged on the same side with new wind air inlet, still there is the temperature difference through the waste gas after the heat exchange cooling and without the new wind of crossing heat exchange, present technique field personnel can be easy to find out, in the whole flow process of new wind and waste gas, there is the temperature difference all the time, can carry out twice heat exchange respectively at exhaust gas inlet place and waste gas outlet place, than the following current exchanged form that traditional whole process can only be carried out a heat exchange, the efficient of the waste-heat recovery device of industrial waste gas of the present invention obviously improves.
Description of drawings
Accompanying drawing 1 is a perspective view of the present invention;
Accompanying drawing 2 is a front view of the present invention;
Accompanying drawing 3 is a vertical view of the present invention;
Accompanying drawing 4 is an A-A cross-sectional schematic of the present invention;
Accompanying drawing 5 is a B-B cross-sectional schematic of the present invention.
Number in the figure is:
10, casing; 11, waste gas air inlet; 111, first reducer pipe; 12, waste gas air outlet; 121, second reducer pipe; 13, new wind air inlet; 131, the 3rd reducer pipe; 14, new wind air outlet; 141, the 4th reducer pipe; 15, the 5th reducer pipe;
20, heat exchanger; 21, exhaust steam passage; 22, new wind passage;
30, pressure fan.
The specific embodiment
Below in conjunction with accompanying drawing preferred embodiment of the present invention is described in detail, thereby protection scope of the present invention is made more explicit defining so that advantages and features of the invention can be easier to be it will be appreciated by those skilled in the art that.
With reference to accompanying drawing 1 to accompanying drawing 5, the waste-heat recovery device of the industrial waste gas in the present embodiment, it comprises casing 10, be arranged on the heat exchanger 20 of these casing 10 inside, be provided with waste gas air inlet 11 and new wind air outlet 14 in the same side of casing 10, opposite side at the casing 10 of waste gas air inlet 11 correspondences is provided with waste gas air outlet 12 and new wind air inlet 13, heat exchanger 20 has mutual isolation but is adjacent, carry out the exhaust steam passage 21 and the new wind passage 22 of heat exchange, one end of exhaust steam passage 21 communicates with waste gas air inlet 11, the other end communicates with waste gas air outlet 12, one end of new wind passage 22 communicates with new wind air inlet 13, and the other end communicates with new wind air outlet 14.New wind air outlet 14 is positioned at the top of waste gas air inlet 11, and new wind air inlet 13 is positioned at the top of waste gas air outlet 12.
The casing 10 of present embodiment is designed to U-shaped, heat exchanger 20 is positioned at the middle part of casing 10, top is provided with the 3rd reducer pipe 131 that connects different new wind air inlet of cross sectional shape 13 and new wind passage 22, and the 4th reducer pipe 141 that connects different new wind air outlet of cross sectional shape 14 and new wind passage 22, the two ends that casing 10 bottoms are provided with the 5th reducer pipe 15, the five reducer pipes 15 all communicate with new wind passage 22.As shown in Figure 2, be provided with first reducer pipe 111 and second reducer pipe 121 in the left and right sides of casing, first reducer pipe 111 connects the different exhaust steam passage 21 of cross sectional shape and waste gas air inlet 11, the second reducer pipes 121 connect different exhaust steam passage 21 and the waste gas air outlets 12 of cross sectional shape.
Among the embodiment shown in accompanying drawing 4 and accompanying drawing 5, heat exchanger 20 be divided into symmetrical about two heat exchange portions, each heat exchange portion respectively is provided with some circular heat exchanger tubes, be described exhaust steam passage 21 in this heat exchanger tube, and the gap between the heat exchanger tube is described new wind passage 22, the exhaust steam passage 21 of the position correspondence of left and right sides heat exchange portion is connected, and promptly the new wind passage 22 of position correspondence also is connected.Between exhaust steam passage 21 and the 3rd reducer pipe 131, the 4th reducer pipe 141 and the 5th reducer pipe 15 is airtight, and is airtight between the new wind passage 22 and first reducer pipe 111, second reducer pipe 121.Exhaust steam passage 21 is the thin-wall stainless steel of the good and lighter weight of heat conductivility, and rate of heat exchange is fast, the usefulness height.
Be provided with pressure fan 30 at new wind air inlet 13, be used to produce negative pressure, the industrial waste gas that the new wind regime source that temperature is lower is constantly sent in the casing 10 and temperature is higher carries out heat exchange.Pressure fan 30 adopts VFC, can maintain preferable duty.
Hot industry waste gas enters first reducer pipe 111 by waste gas air inlet 11, and through the exhaust steam passage 21 of as shown in Figure 4 right heat exchange portion, the exhaust steam passage 21 through left heat exchange portion enters second reducer pipe 121 again, is discharged by waste gas air outlet 12 at last; The new wind that temperature is lower then enters the 3rd reducer pipe 131 by new wind air inlet 13, new wind passage 22 to the 5th reducer pipes 15 through 4 left heat exchange portion shown in the accompanying drawing, pass through new wind passage 22 to the 4th reducer pipes 141 of right heat exchange portion again, discharge by new wind air outlet 14 at last.The above, present technique field personnel can be easy to find out, the waste-heat recovery device of industrial waste gas of the present invention can not carry out twice heat exchange in left and right sides heat exchanging part, because waste gas air inlet 11 is arranged on the same side with new wind air outlet 14, without the high-temp waste gas of crossing heat exchange with heat up through a heat exchange in left heat exchange portion after new wind still have the temperature difference, similarly, waste gas air outlet 12 is arranged on the same side with new wind air inlet 13, waste gas after right heat exchange portion is through heat exchange cooling with still have the temperature difference without the new wind of crossing heat exchange, so this device can carry out twice heat exchange, heat exchange is more abundant, and efficient is higher.
Be provided with the temperature measuring equipment (not shown) respectively at waste gas air inlet 11, waste gas air outlet 12, new wind air inlet 13 and new wind air outlet 14 places, everywhere temperature more than the induction respectively can be found out the energy-saving effect of this waste-heat recovery device intuitively.Usually contain oil gas, wax, steam, volatile ingredient and dust, line hair etc. in the industrial waste gas, these impurity are deposition in heat exchanger 20 very easily, the service time of waste-heat recovery device is of a specified duration more, the impurity deposition is many more, influence the heat conductivility of heat exchanger tube, thereby influence heat exchanger effectiveness, temperature measuring equipment can remind the heat exchanging device to clean by showing energy-saving effect automatically.
Above embodiment only is explanation technical conceive of the present invention and characteristics; its purpose is to allow the people that is familiar with this technology understand content of the present invention and is implemented; can not limit protection scope of the present invention with this; all equivalences that spirit essence is done according to the present invention change or modify, and all should be encompassed in protection scope of the present invention.
Claims (8)
1. the waste-heat recovery device of an industrial waste gas, it is characterized in that: it comprises casing (10), be arranged on the inner heat exchanger (20) of this casing (10), be positioned at the waste gas air inlet (11) and the new wind air outlet (14) of described casing (10) the same side, be positioned at the waste gas air outlet (12) and the new wind air inlet (13) of the corresponding opposite side of described waste gas air inlet (11), described heat exchanger (20) has mutual isolation but is adjacent, carry out the exhaust steam passage (21) and the new wind passage (22) of heat exchange, one end of described exhaust steam passage (21) communicates with described waste gas air inlet (11), the other end communicates with described waste gas air outlet (12), one end of described new wind passage (22) communicates with described new wind air inlet (13), and the other end communicates with described new wind air outlet (14).
2. the waste-heat recovery device of industrial waste gas according to claim 1, it is characterized in that: described new wind air inlet (13) is positioned at the top of described waste gas air outlet (12).
3. the waste-heat recovery device of industrial waste gas according to claim 1, it is characterized in that: described new wind air outlet (14) is positioned at the top of described waste gas air inlet (11).
4. the waste-heat recovery device of industrial waste gas according to claim 1, it is characterized in that: described exhaust steam passage (21) is some circular heat exchanger tubes that are horizontally disposed with and pass described new wind passage (22).
5. the waste-heat recovery device of industrial waste gas according to claim 1, it is characterized in that: described exhaust steam passage (21) is a thin-wall stainless steel.
6. the waste-heat recovery device of industrial waste gas according to claim 1, it is characterized in that: described casing (10) is provided with first reducer pipe (111) that connects described exhaust steam passage (21) and waste gas air inlet (11), so that different described exhaust steam passage (21) and the waste gas air inlets (11) of cross sectional shape is connected.
7. to remove the waste-heat recovery device of 6 described industrial waste gases according to right, it is characterized in that: described casing (10) is provided with second reducer pipe (121) that connects described exhaust steam passage (21) and waste gas air outlet (12), so that different described exhaust steam passage (21) and the waste gas air outlets (12) of cross sectional shape is connected.
8. the waste-heat recovery device of industrial waste gas according to claim 1, it is characterized in that: described new wind air inlet (13) is provided with pressure fan (30).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110004870 CN102080936A (en) | 2011-01-12 | 2011-01-12 | Residual heat recovery device of industrial waste gas |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110004870 CN102080936A (en) | 2011-01-12 | 2011-01-12 | Residual heat recovery device of industrial waste gas |
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| CN102080936A true CN102080936A (en) | 2011-06-01 |
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| CN 201110004870 Pending CN102080936A (en) | 2011-01-12 | 2011-01-12 | Residual heat recovery device of industrial waste gas |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56154395A (en) * | 1980-04-25 | 1981-11-28 | Mitsubishi Heavy Ind Ltd | Inboard heating system which utilizes heat pipe |
| CN2814301Y (en) * | 2005-08-16 | 2006-09-06 | 黄云生 | Energy-saving counterflow heat exchanger |
| CN201476641U (en) * | 2009-08-03 | 2010-05-19 | 杭州航民美时达印染有限公司 | Afterheat recovery device of hot wind |
| CN101749976A (en) * | 2009-12-23 | 2010-06-23 | 李天德 | Waste heat exchange device for textile setting machine |
| CN201935598U (en) * | 2011-01-12 | 2011-08-17 | 张家港市保丽洁环保科技有限公司 | Waste heat recovering device for industrial waste gas |
-
2011
- 2011-01-12 CN CN 201110004870 patent/CN102080936A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56154395A (en) * | 1980-04-25 | 1981-11-28 | Mitsubishi Heavy Ind Ltd | Inboard heating system which utilizes heat pipe |
| CN2814301Y (en) * | 2005-08-16 | 2006-09-06 | 黄云生 | Energy-saving counterflow heat exchanger |
| CN201476641U (en) * | 2009-08-03 | 2010-05-19 | 杭州航民美时达印染有限公司 | Afterheat recovery device of hot wind |
| CN101749976A (en) * | 2009-12-23 | 2010-06-23 | 李天德 | Waste heat exchange device for textile setting machine |
| CN201935598U (en) * | 2011-01-12 | 2011-08-17 | 张家港市保丽洁环保科技有限公司 | Waste heat recovering device for industrial waste gas |
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Application publication date: 20110601 |