CN201803599U - Device for fuel gas temperature adjustment and waste heat recovery - Google Patents
Device for fuel gas temperature adjustment and waste heat recovery Download PDFInfo
- Publication number
- CN201803599U CN201803599U CN201020246904XU CN201020246904U CN201803599U CN 201803599 U CN201803599 U CN 201803599U CN 201020246904X U CN201020246904X U CN 201020246904XU CN 201020246904 U CN201020246904 U CN 201020246904U CN 201803599 U CN201803599 U CN 201803599U
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- temperature
- flue
- fuel gas
- heat recovery
- sinter fume
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Abstract
The utility model discloses a device for fuel gas temperature adjustment and waste heat recovery. The device comprises a main pipeline; a partition board is arranged in the main pipeline, and is used for dividing the main pipeline into a high-temperature pipeline (4) and a lower-temperature pipeline (3) from the middle part; a heat-insulating layer (5) is arranged on the inner wall of the high-temperature pipeline; and a switching valve (2) is arranged at the inlet of the main pipeline. In the structure, the opening degree of the fuel gas switching valve is adjusted according to the temperature of fuel gas, therefore the proportion between the fuel gas coming into the high-temperature pipeline and the fuel gas coming into the low-temperature pipeline is controlled, the temperature of the fuel gas at the outlet of a waste heat recovering device keeps stable, and the improvement on the fuel gas desulfurizing efficiency is facilitated.
Description
Technical field
The utility model relates to a kind of flue gas waste heat recovery apparatus.
Background technology
Sintering is the previous important production process of ironmaking, and the sinter fume temperature is very high, has a large amount of waste heats to utilize, and simultaneously, the sulfur dioxide of sintering circuit discharging accounts for more than 60% of iron and steel production total release.Therefore, the waste heat recovery of sinter fume and desulfurizing and purifying technology are the important technologies of iron and steel enterprise's energy-saving and emission-reduction.
At present, the flue gas desulfurization measure at sintering machine mainly contains recirculating fluidized bed method, limestone/lime-gypsum method, ammonia-ammonium sulfate method, ionic liquid method, dense-phase tower method, rotary spraying technique, two alkaline process, activated carbon method etc.Wherein, adopt the circulating fluid bed semi-drying method flue gas desulfurization of flue gas recirculation little, almost non-wastewater discharge, advantage such as system is simple, investment is relatively low, and obtain many users' favors because of its floor space.By the characteristics of sulfur dioxide reaction in lime slurry and recycle stock and the sinter fume as can be known, the higher or on the low side desulfuration efficiency that all will cause of desulfurization reaction temperature descends.In addition, flue gas and material temperature are lower in the absorption tower, also can cause absorption tower inwall material to be easy to caking.If flue-gas temperature is lower than the dew point of sinter fume, also can cause the corrosion of equipment because of the generation acid mist.
The flue-gas temperature of discharging from sintering machine head end is usually above the optimum temperature of semi-dry desulphurization, but all fluctuations in time of the flow of flue gas and temperature.The part sensible heat of sinter fume can be recycled, and needs again simultaneously the stable to improve desulfuration efficiency of sinter fume temperature regulated, strengthened to the temperature of sinter fume.
The utility model content
The purpose of this utility model is at above-mentioned the deficiencies in the prior art, and a kind of flue-gas temperature of can regulating that proposes, the device that the waste heat of flue gas is recycled simultaneously.
The purpose of this utility model is achieved through the following technical solutions:
A kind of flue-gas temperature is regulated and waste-heat recovery device, and it is characterized in that: described device comprises that inside is provided with the trunk line of dividing plate, and dividing plate is divided into high-temperature pipe and cryogenic piping with the middle part of trunk line, and the inwall of described high-temperature pipe is provided with heat insulation layer.Because the existence of high and low temperature pipeline makes flue gas can carry out a mixing, thereby obtains the flue gas of a suitable temperature, is convenient to follow-up desulphurization reaction etc.
As further optimization, for the exhaust gas volumn that dynamic adjustments enters high-temperature pipe and cryogenic piping, there is transfer valve the porch of described trunk line.
As further optimization, the connection of transfer valve for convenience, described transfer valve is articulated on the dividing plate.
When this transfer valve aperture changes, can change the flue gas ratio that enters low temperature flue and high-temperature flue.Back at the sinter fume transfer valve is provided with low temperature flue and high-temperature flue respectively.The heat-transfer surface area that is provided with in low temperature flue is greater than the heat-transfer surface area that is provided with in high-temperature flue, and during flue that sinter fume is flowed through different, because heat exchange amount difference, temperature drop is also different.The sinter fume amount of high-temperature flue and the low temperature flue of flowing through not simultaneously, the mixed temperature of sinter fume is also just different.When the temperature of sinter fume is unstable, by switching the sinter fume transfer valve, can control the temperature constant in sinter fume adjustment and waste-heat recovery device exit, remain in best 100～150 ℃ temperature range of sintering flue gas desulfurization.
The transfer valve of this device is regulated according to the original temperature of sinter fume, and during the sinter fume temperature drift, the flue gas that enters low temperature flue is more; When the sinter fume temperature was on the low side, the flue gas that enters high-temperature flue was more.
As further optimization, in order to promote the mixing of high and low temperature flue gas, the exit of described trunk line is provided with the projection towards dividing plate.
Described device is vertical or horizontal type structure.
The beneficial effects of the utility model are: greatly improved the temperature adaptive capacity of desulphurization system, realize the self-regulation to the sinter fume temperature under the situation that does not need external heat source, the desulfuration efficiency that helps desulphurization system maintains a higher level.Simultaneously, can reclaim the part sensible heat of sinter fume.This device integrates high-temperature flue and low temperature flue, is combined into the overall structure of a flue, and compact conformation helps on-the-spot the layout.
Description of drawings
Fig. 1 is the structural representation of the utility model embodiment.
Among the figure, part 1 is the sinter fume inlet, and part 2 is a transfer valve, and part 3 is a low temperature flue, and part 4 is a high-temperature flue, and part 5 is a heat insulation layer, and part 6 is a projection, and part 7 is the sinter fume outlet.
The specific embodiment
Below in conjunction with specific embodiment and accompanying drawing the utility model is further described:
Sinter fume adjustment and waste-heat recovery device as 1: one vertical layout of accompanying drawing, the sinter fume that comes out from sintering machine head end, from sinter fume 1 trunk line that enters sinter fume adjustment and waste-heat recovery device that enters the mouth, trunk line is divided into high-temperature pipe 4 and cryogenic piping 3 by a dividing plate with the intermediate portion.Hinged transfer valve 2 on the dividing plate of sinter fume porch, when this transfer valve aperture changes, can change the flue gas ratio that enters low temperature flue and high-temperature flue, when transfer valve 2 moves upward, the exhaust gas volumn that enters high-temperature flue 4 increases, when transfer valve 2 moved downward, the sinter fume amount that enters low temperature flue 3 increased.Owing in high-temperature flue, arranged heat insulation layer 5, thus the heat-transfer surface area that low temperature flue 3 in, is provided with greater than the heat-transfer surface area that high-temperature flue 4 in, is provided with, during flue that sinter fume is flowed through different, owing to heat exchange amount difference, temperature drop is difference also.The sinter fume amount of high-temperature flue 4 and the low temperature flue 3 of flowing through not simultaneously, the mixed temperature of sinter fume is also just different.When the temperature of sinter fume was unstable, by switching sinter fume transfer valve 2, during the sinter fume temperature drift, transfer valve 2 moved downward; When the sinter fume temperature was on the low side, transfer valve 2 moved upward, and the sinter fume that can control sinter fume adjustment and waste-heat recovery device exports the temperature constant at 7 places, remained in best 100～150 ℃ temperature range of sintering flue gas desulfurization.Before the sinter fume outlet 7 of the afterbody of sinter fume adjustment and waste-heat recovery device, the inwall of trunk line is provided with 6 pairs of high temperature of triangular hill and the low-temperature sintering flue gas carries out disturbance, promotes the mixing of high low temperature sinter fume.
Certainly transfer valve can be provided with separately, is not connected with dividing plate, such as can be by being arranged on the bearing support on the trunk line inwall; leg-of-mutton protruding 6 can be set to the structure of water-cooling wall; perhaps be the abnormally-structured of other, of this sort variation all is subjected to protection of the present utility model.
The utility model enters the flue gas proportion control exit gas temperature of low temperature and high-temperature flue by change, and this device also is suitable for other fume treatment auxiliaries, and the variation of gas medium does not all constitute materially affect of the present utility model.
Claims (5)
1. a flue-gas temperature is regulated and waste-heat recovery device, it is characterized in that: described device comprises that inside is provided with the trunk line of dividing plate, dividing plate is divided into high-temperature pipe (4) and cryogenic piping (3) with the middle part of trunk line, and the inwall of described high-temperature pipe is provided with heat insulation layer (5).
2. flue-gas temperature as claimed in claim 1 is regulated and waste-heat recovery device, and it is characterized in that: the porch of described trunk line is provided with transfer valve (2).
3. flue-gas temperature as claimed in claim 2 is regulated and waste-heat recovery device, and it is characterized in that: described transfer valve (2) is articulated on the dividing plate.
4. regulate and waste-heat recovery device as the arbitrary described flue-gas temperature of claim 1 to 3, it is characterized in that: the exit of described trunk line is provided with towards the projection of dividing plate (6).
5. flue-gas temperature as claimed in claim 4 is regulated and waste-heat recovery device, and it is characterized in that: described device is vertical or horizontal type structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020246904XU CN201803599U (en) | 2010-07-02 | 2010-07-02 | Device for fuel gas temperature adjustment and waste heat recovery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020246904XU CN201803599U (en) | 2010-07-02 | 2010-07-02 | Device for fuel gas temperature adjustment and waste heat recovery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201803599U true CN201803599U (en) | 2011-04-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201020246904XU Expired - Fee Related CN201803599U (en) | 2010-07-02 | 2010-07-02 | Device for fuel gas temperature adjustment and waste heat recovery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201803599U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106705689A (en) * | 2017-02-08 | 2017-05-24 | 中冶华天工程技术有限公司 | Afterheat recovery ratio-adjustable steel rolling heating furnace smoke afterheat utilization system |
| CN106766967A (en) * | 2017-02-08 | 2017-05-31 | 中冶华天工程技术有限公司 | The adjustable heater for rolling steel fume afterheat Optimum utilization system of waste heat recovery ratio |
-
2010
- 2010-07-02 CN CN201020246904XU patent/CN201803599U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106705689A (en) * | 2017-02-08 | 2017-05-24 | 中冶华天工程技术有限公司 | Afterheat recovery ratio-adjustable steel rolling heating furnace smoke afterheat utilization system |
| CN106766967A (en) * | 2017-02-08 | 2017-05-31 | 中冶华天工程技术有限公司 | The adjustable heater for rolling steel fume afterheat Optimum utilization system of waste heat recovery ratio |
| CN106705689B (en) * | 2017-02-08 | 2019-02-19 | 中冶华天工程技术有限公司 | A kind of waste heat recycling adjustable heater for rolling steel smoke waste heat utilization system of ratio |
| CN106766967B (en) * | 2017-02-08 | 2019-02-19 | 中冶华天工程技术有限公司 | Waste heat recycles the adjustable heater for rolling steel fume afterheat Optimum utilization system of ratio |
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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: 20110420 Termination date: 20180702 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |