CN201110556Y - Chimney air flue equipment of boiler flue gas rinsing method heat recovering - Google Patents
Chimney air flue equipment of boiler flue gas rinsing method heat recovering Download PDFInfo
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- CN201110556Y CN201110556Y CNU2007200631907U CN200720063190U CN201110556Y CN 201110556 Y CN201110556 Y CN 201110556Y CN U2007200631907 U CNU2007200631907 U CN U2007200631907U CN 200720063190 U CN200720063190 U CN 200720063190U CN 201110556 Y CN201110556 Y CN 201110556Y
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Abstract
The utility model relates to a chimney air flue apparatus which utilizes a boiler flue gas water washing method to recover residual heat, which is integrated with a chimney air flue, wherein spray head pipes are arranged in a chimney and a horizontal air flue, the direction of a spray hole is upwards, whose diameter is bigger and which can not be blocked, the upper portion of the spray hole is provided with a spray dip thinning device, dip is thinned, which has a longer period of staying in the air flue to interact, and the effect of removing smoke, lowering temperature and recovering residual heat. The lower portion of an air flue is provided with a reflux weir, sewage water which is sprayed from the upper stream and the down stream of the air flue is separated according to different temperatures, and the water respectively flows into a hot water tank and an encircling groove, and hot sewage water temperature which is got from spraying is effectively improved, and equipment cost and operation cost of a purified water heat exchanger are lowered. The outer side of an air flue with higher temperature is designed with a sheathed heater to further improve the temperature of purified hot water, and a baffle plate is arranged in a jacket to intensify convective heat transfer on purified water side. The chimney air flue apparatus has low equipment cost and operation cost, which is reliable to run, and can be widely applied in removing gas in high-temperature flue gas and utilizing residual heat, and is more suitable for flue gas of oil gas slurry boilers.
Description
Technical field
The utility model patent relates to the chimney flue equipment of boiler smoke WATER-WASHING METHOD waste heat recovery.It is widely applicable for the UTILIZATION OF VESIDUAL HEAT IN and the gas udst separation of various industrial high temperature flue gases, is particularly suitable for the UTILIZATION OF VESIDUAL HEAT IN and the udst separation of high temperature flue gases such as natural gas boiler, thermo oil boiler, coal water slurry boiler, direct combustion machine central air-conditioning, industrial furnace.
Background technology
UTILIZATION OF VESIDUAL HEAT IN for the high-temperature flue gas of natural gas boiler, thermo oil boiler, coal water slurry boiler, direct combustion machine central air-conditioning, industrial furnace etc., prior art generally adopts economizer, just utilize a part of waste heat wherein, the design code flue gas will be higher than the temperature discharging of dew point, in case the condensation under dew point of the sulfide in the flue gas avoids equipment to suffer serious quick corrosion.And,, make heat transfer efficiency very low owing to reasons such as economizer superficial dusts.Dust stratification influence in the finned tube waste heat boiler of the gas from oil burning of introducing according to document (Feng Xin, acoustic wave ash ejector use in waste heat boiler, petrochemical equipment, 2005 the 2nd phases, 59-60 page or leaf) just makes quantity of steam descend 25% in one month.
Existing fume afterheat utilizes in the technology, also have and adopt WATER-WASHING METHOD, but all be traditional downward spraying method, the water that the hot sewage that sprays is passed to cleaning with heat by heat exchanger (for example, the utility model patent on August 11st, 2004, a kind of flue gas multi-stage waste heat recovery device, CN151952A).There are three big problems in these technology: first, in order to prevent the obstruction of spray apertures, water droplet just must not be lower than certain value from the initial velocity of spray apertures ejection, do acceleration of gravity motion with the water droplet that certain initial velocity sprays downwards, the washing time that stops in device is very short, and the initial velocity of ejection is bigger, and stop is just shorter with the time of flue gas contact action, and effect is just poorer; The second, to stop up in order to prevent spray apertures, spray apertures is bigger, and water droplet is thick, and decentralization is low, and the water droplet total surface area of same spray flux is little, the weak effect that contacts with flue gas.Owing to these two reasons, cause not only that equipment is huge, spray flux is big, the pump operating cycle expense is high, and to cause more serious problem be that the water temperature that obtains of spray is lower, low grade residual heat utilizes the very big problem that worsens with economic index of heat exchanger area.
The utility model content
The utility model patent will solve lower, inefficient, the problems such as equipment is huge, operating cost height of coolant-temperature gage that spray that above-mentioned high-temperature flue gas UTILIZATION OF VESIDUAL HEAT IN technology exists obtains, the chimney flue equipment of boiler smoke WATER-WASHING METHOD waste heat recovery is proposed, directly utilize chimney, flue as the smoke elimination waste-heat recovery device, adopt flue shower water partial reflux circulated sprinkling and macropore upwards to spray the method for refinement again, obtain the shower water of higher temperature, reduce the clear water heat exchanger area that the hot sewage of spray utilizes heat energy, improve its operational efficiency and economic index.The efficient height of the smoke elimination flue gas waste heat recovery of this device, installation cost and running cost are low, reliability height, simple and convenient operation and maintenance.
The technical scheme of the utility model patent is: the chimney flue equipment of boiler smoke WATER-WASHING METHOD waste heat recovery, form by chimney, spray head, water droplet refinement device, flue gas even distribution plate, flue, shower, flue water droplet refinement device, sheathed heater, backflow weir, circulating slot, circulating pump, hot water storgae, clear water heat exchanger etc.
Adopt direct shower water washing method dedusting cooling recovery waste heat at the flue horizontal segment.The flue shower is installed in bottom in the horizontal flue section of dedusting cooling, and shower can be one, also can be two, even many, by the width decision of flue cross section.Being directed upwardly of the spray apertures of flue shower, spray apertures are the above macropores of diameter 1.5mm, in case stop up in the long-time running; The top of spray apertures is provided with flue water droplet refinement device, and the little water droplet of the fined one-tenth of big water droplet that spray is come out improves the gas cleaning cool effect.The hot sewage that horizontal flue dedusting temperature descending section spray obtains adopts the backflow weir to be divided into two parts, and the hot sewage temperature of flue gas upstream one side on backflow weir is higher, flows to go clear water heat exchanger and low temperature clean hydrothermal exchange after hot water storgae is clarified; The hot sewage temperature of flue gas downstream one side on backflow weir is lower, flows to circulating slot, mixes with the hot sewage that obtains of spray in the chimney, goes the water temperature that sprays so that bring up to the flue shower, and it is higher to make flue spray the sewage temperature that obtains.It is to heat from the clear hot-water that the clear water heat exchanger comes that flue gas upstream one side design on the backflow weir of the horizontal flue section of dedusting cooling has sheathed heater, jacket side again.Because temperature is higher in this section flue, the heat transfer temperature difference of sheathed heater is big, helps obtaining the high clear hot-water of temperature; Because the flue inboard of sheathed heater correspondence is not single dry flue gas heat convection, includes the direct contact heat-exchanging of water vapor condensation, chuck inwall liquid film and flue gas simultaneously, so the coefficient of heat transfer α of this side
iWill be higher than single dry flue gas convection transfer rate significantly; Design has deflection plate in the chuck, and the heat convection of clear hot-water side is also strengthened; It is more heat conduction reinforced that its resultant effect is that the flue sheathed heater obtains.
Flue gas is to the chimney recovery waste heat of further lowering the temperature again.It can be the ring tube of same layer plane, square endless tube, several straight tube that the middle part design of chimney has spray head, its structure, also can be ring tube, square endless tube, the several straight tube of installing at differing heights.Being directed upwardly of the spray apertures of spray head, spray apertures are the above macropores of diameter 1.5mm, in case stop up in the long-time running; The top of spray apertures is provided with water droplet refinement device, and the big water droplet that spray is come out is fined, improves the purifying and cooling effect of flue gas.The design of chimney inlet portion has the flue gas even distribution plate, so that improve flue gas uniform degree in chimney, improves the effect of the effect that is in contact with one another with the spray water droplet.The chimney bottom design has the circulating slot of collecting chimney shower water and flue low-temperature zone shower water, the hot water storgae that also has a collecting flue high temperature section shower water, two grooves can about isolate mutually, also can isolate up and down, can also be with hot water storgae and the integrated structure of clear water design of heat exchanger.Hot sewage removes the clear water heat exchanger after the hot water storgae clarification, the sewage cooling goes the chimney spray head recycling again later, and clear water improves after the temperature, further heats to sheathed heater.
Water droplet refinement device in flue water droplet refinement device and the chimney generally adopts the angle mount stainless steel wire sieve, and the order number of screen cloth is in 3～12 order scopes, according to the decision of the size of the soot dust granule in the flue gas; The oblique angle of itself and horizontal plane is generally 45 degree in 30 degree～60 degree scopes; Setting height(from bottom) be meant spray apertures come out vertically upward shower water and the distance between the intersection point of screen cloth, it is worth in 150～350mm scope, the increase of the speed of the water that concrete value sprays out with spray apertures increases.The structure of the water droplet refinement device in flue water droplet refinement device and the chimney has multiple, can also be structures such as the mutual stainless steel steel wire that overlaps, stainless steel wire taper spring.
Description of drawings
Fig. 1 is that the structural principle of the chimney flue equipment of boiler smoke WATER-WASHING METHOD waste heat recovery is always schemed.
Fig. 2 is the A-A cutaway view of the chimney flue device spray flue of boiler smoke WATER-WASHING METHOD waste heat recovery.
Fig. 3 is the B-B cutaway view of the chimney flue equipment flue chuck of boiler smoke WATER-WASHING METHOD waste heat recovery.
Fig. 4 is the schematic diagram that circulating slot and hot water storgae upper and lower settings and hot water storgae and clear water heat exchanger are integrated.
The specific embodiment
Be described in further detail below in conjunction with accompanying drawing 1, accompanying drawing 2, accompanying drawing 3,4 pairs of the utility model of accompanying drawing.
1B circulating pump 2 low temperature spray headers 3 hot water storgaes 4 circulating slots 5 uniform boards 6 spray heads 7 water droplet refinement devices 8 chimneys 9 flues 10 sheathed heaters 11 flue water droplet refinement devices 12 showers 13 leaking holes 14 backflow weirs 15 water legs, 16 hot sewage pipe 17 hot sewage pipe 18 clear water heat exchanger 19A circulating pumps 20 blow-off pipes 21 alkali liquor pipes 30 deflection plates 31 cold clear water inlet tubes 32 clear water pipes 33 clear water output pipes among the figure
The chimney flue equipment of the boiler smoke WATER-WASHING METHOD waste heat recovery of the utility model patent is made up of chimney 8, spray head 6, water droplet refinement device 7, flue gas even distribution plate 5, flue 9, shower 12, flue water droplet refinement device 11, sheathed heater 10, backflow weir 14, circulating slot 4, B circulating pump 1, A circulating pump 19, hot water storgae 3 etc.
Directly utilize flue 9 horizontal segments spray water washing dedust cooling recovery waste heat.Shower 12 is installed in bottom at flue 9 horizontal segments of dedusting cooling, and shower 12 can be one, also can be two, even many, by the width decision of flue cross section.Being directed upwardly of the spray apertures of shower 12, spray apertures are the above macropores of diameter 1.5mm, in case stop up in the long-time running; The top of spray apertures is provided with flue water droplet refinement device 11, and the little water droplet of the fined one-tenth of big water droplet that spray is come out improves the gas cleaning cool effect.The hot sewage that horizontal flue 9 dedusting temperature descending sections spray obtains adopts backflow weir 14 to be divided into two parts, and the hot sewage temperature of flue gas upstream one side on backflow weir 14 is higher, flows to go clear water heat exchanger 18 and low temperature clean hydrothermal exchange after hot water storgae 3 is clarified; The hot sewage temperature of flue gas downstream one side on backflow weir 14 is lower, flows to circulating slot 4, mixes with the hot sewage that obtains of spray in the chimney, goes the water temperature that sprays so that bring up to flue shower 12, further improves by flue 9 to spray the sewage temperature that obtains.It is the clear hot-waters from clear water heat exchanger 18 that flue gas upstream one side design on the backflow weir 14 of 9 sections of the horizontal flues of dedusting cooling has sheathed heater 10, chuck one side of sheathed heater 10.Because the temperature in flue 9 these sections is higher, the heat transfer temperature difference of sheathed heater 10 is big, helps obtaining the high clear hot-water of temperature; Because flue 9 inboards of sheathed heater 10 correspondences are not single dry flue gas heat convections, include the direct contact heat-exchanging of water vapor condensation, chuck inwall liquid film and flue gas simultaneously, so the coefficient of heat transfer α of this side
iWill be higher than single dry flue gas convection transfer rate significantly; Design has deflection plate 20 in the sheathed heater 10, and the heat convection of cleaning soft water side is also strengthened; It is more heat conduction reinforced that its resultant effect is that sheathed heater 10 obtains.
Flue gas is to chimney 8 recovery waste heat of further lowering the temperature again.The middle part design of chimney 8 has spray head 6, its structure can be mounted in conplane ring tube, square endless tube, several straight tube, also can be mounted in the ring tube of differing heights, square endless tube, several straight tube.Being directed upwardly of the spray apertures of spray head 6, spray apertures are the above macropores of diameter 1.5mm, in case stop up in the long-time running; The top of spray apertures is provided with water droplet refinement device 7, and the big water droplet that spray is come out is fined, improves the purifying and cooling effect of flue gas.The inlet portion design of chimney 8 has flue gas even distribution plate 5, so that improve flue gas uniform degree in chimney, improves the effect of the effect that is in contact with one another with the spray water droplet.Chimney 8 bottom design have the circulating slot 4 of collecting chimney shower water and flue low-temperature zone shower water, also have a hot water storgae 3 of collecting high temperature section flue 9 shower waters.Circulating slot 4 and hot water storgae 3 can about isolate mutually, also can isolate up and down, hot water storgae 3 and clear water heat exchanger 18 can also be designed to incorporate structure (as shown in Figure 4).Hot sewage removes clear water heat exchanger 18 after hot water storgae 3 clarifications, the sewage cooling, is further heated to sheathed heater 10 after the clear water raising temperature with after A circulating pump 19 goes chimney 8 spray heads 6 recycling.
The water droplet refinement device 7 general angle mount stainless steel wire sieves that adopt that flue water droplet refinement device 11 and chimney are 8 li, several 3～12 order scopes of the order of screen cloth are by the decision of the size of the soot dust granule in the flue gas; Spend～60 degree scopes with the oblique angle of horizontal plane 30, be generally 45 degree; Setting height(from bottom) be meant spray apertures come out vertically upward shower water and the distance between the intersection point of screen cloth, it is worth in 150～350mm scope, the increase of the speed of the water that concrete value sprays out with spray apertures increases.The structure of the water droplet refinement device 7 in flue water droplet refinement device 11 and the chimney has multiple, can also be structures such as the mutual stainless steel steel wire that overlaps, stainless steel wire taper spring.
Claims (5)
1. boiler smoke WATER-WASHING METHOD waste heat recovery chimney flue equipment, form by chimney (8), spray head (6), water droplet refinement device (7), flue (9), shower (12), flue water droplet refinement device (11), backflow weir (14), circulating slot (4), hot water storgae (30), circulating pump (1,19), it is characterized in that: the bottom of flue (9) horizontal segment is equipped with shower (12), being directed upwardly of the spray apertures of shower (12), more than the diameter 1.5mm of spray apertures, the top of spray apertures is provided with flue water droplet refinement device (11); The bottom design of horizontal flue (9) has backflow weir (14), with spray, the upstream and downstream sewage temperature of backflow weir (14) height difference keeps apart, and flows to hot water storgae (3) and circulating slot (4) respectively; The design of the middle part of chimney (8) has spray head (6), being directed upwardly of the spray apertures of spray head (6), and more than the diameter 1.5mm of spray apertures, the top of spray apertures is provided with water droplet refinement device (7).
2. according to the boiler smoke WATER-WASHING METHOD waste heat recovery chimney flue equipment of claim 1, it is characterized in that: the flue gas upstream one side design on flue (9) backflow weir (14) has the sheathed heater (10) of further raising clear hot-water temperature, and design has the deflection plate (20) that the clear hot-water convection heat transfer' heat-transfer by convection is strengthened in the sheathed heater (10).
3. according to the chimney flue equipment of the boiler smoke WATER-WASHING METHOD waste heat recovery of claim 1, it is characterized in that: the structure of the water droplet refinement device (7) of flue water droplet refinement device (11) and chimney (8) is arranged on the screen cloth of spray apertures top or stainless steel steel wire or the stainless steel wire taper spring that overlaps mutually, the general angle mount stainless steel wire sieve that adopts, the order number of screen cloth is in 3～12 order scopes, oblique angle with respect to the horizontal plane is in 30 degree～60 degree scopes, and setting height(from bottom) is in 150～350mm scope.
4. according to the chimney flue equipment of the boiler smoke WATER-WASHING METHOD waste heat recovery of claim 1, it is characterized in that: the hot water storgae (3) of the bottom of chimney (8) and circulating slot (4) can about isolate mutually, also can isolate up and down, hot water storgae (3) and clear water heat exchanger (18) can also be designed to incorporate structure.
5. according to the chimney flue equipment of the boiler smoke WATER-WASHING METHOD waste heat recovery of claim 1, it is characterized in that: the structure of chimney (8) spray head (6), can be the ring tube in same Plane Installation, square endless tube, several straight tube, also can be ring tube, square endless tube, the several straight tube of installing in the differing heights layering.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200631907U CN201110556Y (en) | 2007-05-11 | 2007-05-11 | Chimney air flue equipment of boiler flue gas rinsing method heat recovering |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200631907U CN201110556Y (en) | 2007-05-11 | 2007-05-11 | Chimney air flue equipment of boiler flue gas rinsing method heat recovering |
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| CN201110556Y true CN201110556Y (en) | 2008-09-03 |
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| CNU2007200631907U Expired - Fee Related CN201110556Y (en) | 2007-05-11 | 2007-05-11 | Chimney air flue equipment of boiler flue gas rinsing method heat recovering |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101666483B (en) * | 2009-09-09 | 2013-01-02 | 张家港市友成高新材料有限公司 | Oil boiler heat energy recycling device |
| CN104748139A (en) * | 2013-12-31 | 2015-07-01 | 常熟市第二热电有限公司 | Chimney inner heat utilization improving method |
| CN110307559A (en) * | 2019-07-04 | 2019-10-08 | 江苏江顺精密机电设备有限公司 | A kind of low-nitrogen discharged combustion system of heating furnace |
| CN116808762A (en) * | 2023-07-24 | 2023-09-29 | 宜春市江南玖源新材料有限公司 | Dust removal treatment process after roasting lithium ores |
-
2007
- 2007-05-11 CN CNU2007200631907U patent/CN201110556Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101666483B (en) * | 2009-09-09 | 2013-01-02 | 张家港市友成高新材料有限公司 | Oil boiler heat energy recycling device |
| CN104748139A (en) * | 2013-12-31 | 2015-07-01 | 常熟市第二热电有限公司 | Chimney inner heat utilization improving method |
| CN110307559A (en) * | 2019-07-04 | 2019-10-08 | 江苏江顺精密机电设备有限公司 | A kind of low-nitrogen discharged combustion system of heating furnace |
| CN116808762A (en) * | 2023-07-24 | 2023-09-29 | 宜春市江南玖源新材料有限公司 | Dust removal treatment process after roasting lithium ores |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080903 Termination date: 20100511 |