CN213147481U

CN213147481U - Flue gas deep condensation waste heat recovery device

Info

Publication number: CN213147481U
Application number: CN202021982399.5U
Authority: CN
Inventors: 王延伟; 程洁; 曹振华
Original assignee: Shandong Fuyuan Energy Saving Environmental Protection Engineering Co ltd
Current assignee: Shandong Fuyuan Energy Saving Environmental Protection Engineering Co ltd
Priority date: 2020-09-11
Filing date: 2020-09-11
Publication date: 2021-05-07
Anticipated expiration: 2030-09-11

Abstract

The utility model discloses a flue gas degree of depth condensation waste heat recovery device belongs to waste heat recovery technical field. A flue gas deep condensation waste heat recovery device comprises a conveying pipe, wherein a smoke inlet and a smoke outlet are formed in two ends of the conveying pipe respectively, a first spiral pipe attached to the inner wall is fixedly connected in the conveying pipe, a heat preservation pipe is sleeved on the outer wall of the conveying pipe, an air inlet pipe and an air outlet pipe are formed in two ends of the heat preservation pipe respectively, a second spiral pipe is fixedly connected in the heat preservation pipe, the two ends of the first spiral pipe and the two ends of the second spiral pipe are fixedly connected through a connecting pipe, a circulating pump is fixedly installed in the middle of the connecting pipe, and a deep condensation filtering device is arranged in the smoke outlet of the conveying pipe; the utility model discloses can be more abundant retrieve the temperature to the flue gas to can also carry out further reduction to the discharge temperature of flue gas when carrying out filterable to the dust in the flue gas.

Description

Flue gas deep condensation waste heat recovery device

Technical Field

The utility model relates to a waste heat recovery technical field especially relates to a flue gas degree of depth condensation waste heat recovery device.

Background

Due to energy shortage, the energy-saving work is further developed. Various novel advanced energy-saving furnaces are gradually improved, and the heat dissipation loss of the furnace is obviously reduced after the novel high-quality heat-insulating materials such as refractory fibers are adopted. The advanced combustion device is adopted to strengthen the combustion, the incomplete combustion amount is reduced, and the air-fuel ratio is also reasonable. However, techniques for reducing the heat loss of flue gas and recovering the residual heat of flue gas have not been developed rapidly. In order to further improve the heat efficiency of the kiln and achieve the purposes of energy conservation and consumption reduction, the recovery of the flue gas waste heat is also an important energy-saving way.

However, the heat loss of the existing waste heat recovery device is large, after waste heat recovery is carried out, the temperature of the flue gas is mostly higher than 40 ℃, the flue gas emission standard of some regions is not higher than 40 ℃, the dust in the flue gas is large, and the pollution to the air is relatively large.

Disclosure of Invention

The utility model aims at solving the problems of large heat loss and high discharge temperature of the flue gas waste heat recovery device in the prior art and providing a flue gas deep condensation waste heat recovery device.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a flue gas degree of depth condensation waste heat recovery device, includes the conveyer pipe, the both ends of conveyer pipe are equipped with into mouth and outlet flue respectively, the first spiral pipe of fixedly connected with and inner wall laminating in the conveyer pipe, the outer wall cover of conveyer pipe is equipped with the insulating tube, the both ends of insulating tube are equipped with intake pipe and outlet duct respectively, fixedly connected with second spiral pipe in the insulating tube, all through connecting pipe fixed connection between the both ends of first spiral pipe and second spiral pipe, the middle part fixed mounting of connecting pipe has the circulating pump, be equipped with degree of depth condensation filter equipment in the outlet flue of conveyer pipe.

Preferably, degree of depth condensation filter equipment includes two filter screens at top in the outlet flue, the lower extreme fixedly connected with of conveyer pipe rather than the collection box of intercommunication, two the lower extreme of filter screen all extends to in the collection box, the interior top fixed mounting of outlet flue has three shower, and is three crisscross setting each other between shower and the two filter screens, it is three the lower extreme of shower all is equipped with a plurality of evenly distributed's nozzle, the lower extreme of collection box is equipped with the drain pipe, fixed mounting has the filter in the collection box.

Preferably, the inside of conveyer pipe is connected with the pivot through the support rotation, the scraper blade that two symmetries of outer wall fixedly connected with of pivot set up, two the end of scraper blade all with the inner wall laminating of first spiral pipe, the outer wall fixed mounting of conveyer pipe has the motor, the output of motor and the equal fixedly connected with sprocket of one end of pivot, two connect through the chain between the sprocket.

Preferably, the outer wall of the conveying pipe is positioned in the heat preservation pipe and is fixedly connected with a spiral sheet surrounding the outer wall.

Preferably, the chain and the outer wall sleeves of the two chain wheels are provided with protective covers.

Preferably, heat preservation gaps are arranged between the second spiral pipe and the inner wall of the heat preservation pipe and between the second spiral pipe and the outer wall of the conveying pipe.

Compared with the prior art, the utility model provides a flue gas degree of depth condensation waste heat recovery device possesses following beneficial effect:

1. this flue gas degree of depth condensation waste heat recovery device, in the flue gas through the conveyer pipe in the period, the temperature that the insulating tube can the significantly reduced flue gas passes through the surface of conveyer pipe and runs off in a large number, and can also heat the cold air in the insulating tube, and in the conveyer pipe, heat is drawn to the flue gas to first spiral pipe and inside water efficient, and the circulating pump carries the heat in the first spiral pipe in the second spiral pipe, then heat the cold air in the insulating tube, the heat conductivility of cold air heating in-process normal water is good, and the insulating tube can also prevent thermal loss, thereby make the waste heat recovery performance of flue gas better.

2. This flue gas degree of depth condensation waste heat recovery device, after flue gas waste heat recovery, the flue gas carries out the filtration of smoke and dust through two filter screens, reduces the pollution of flue gas to the air to in filter screen filtering process, the shower passes through the nozzle and sprays water downwards, thereby washes two filter screens, prevents that the filter screen from appearing blockking up, and can also carry out further cooling and dust removal to the flue gas, promotes purifying effect.

3. This flue gas degree of depth condensation waste heat recovery device, during waste heat recovery, the motor drives the pivot through two sprockets and chain and rotates, and the pivot drives two scraper blades and scrapes the clearance to the inner wall of first spiral pipe to it is not hard up to blow the smoke and dust on the inner wall of first spiral pipe, and blows to the filter screen and filter under the effect of flue gas.

Drawings

Fig. 1 is a schematic structural view of a flue gas deep condensation waste heat recovery device provided by the present invention;

fig. 2 is a schematic structural view of a point a in fig. 1 of the deep condensation waste heat recovery device for flue gas of the present invention;

fig. 3 is the utility model provides a flue gas deep condensation waste heat recovery device's B department's schematic structure in fig. 1.

In the figure: 1. a delivery pipe; 2. a smoke inlet; 3. a smoke outlet; 4. a heat preservation pipe; 5. an air inlet pipe; 6. an air outlet pipe; 7. a first spiral pipe; 8. a second spiral pipe; 9. a connecting pipe; 10. a circulation pump; 11. a filter screen; 12. a recycling bin; 13. a drain pipe; 14. a shower pipe; 15. a nozzle; 16. a filter plate; 17. a support; 18. a rotating shaft; 19. a squeegee; 20. a motor; 21. a sprocket; 22. a chain; 23. a protective cover; 24. a spiral sheet.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Example (b):

referring to fig. 1-3, a flue gas deep condensation waste heat recovery device, including a conveying pipe 1, two ends of the conveying pipe 1 are respectively provided with a smoke inlet 2 and a smoke outlet 3, the conveying pipe 1 is internally and fixedly connected with a first spiral pipe 7 attached to an inner wall, the outer wall of the conveying pipe 1 is sleeved with a heat preservation pipe 4, two ends of the heat preservation pipe 4 are respectively provided with an air inlet pipe 5 and an air outlet pipe 6, the heat preservation pipe 4 is internally and fixedly connected with a second spiral pipe 8, two ends of the first spiral pipe 7 and the second spiral pipe 8 are fixedly connected through a connecting pipe 9, the middle part of the connecting pipe 9 is fixedly provided with a circulating pump 10, during the flue gas passes through the conveying pipe 1, the heat preservation pipe 4 can greatly reduce the temperature of the flue gas and greatly loss through the surface of the conveying pipe 1, and can also heat the cold air in the heat preservation pipe 4, and in the conveying pipe, and in circulating pump 10 carried the second spiral pipe 8 with the heat in the first spiral pipe 7, then heated the cold air in insulating tube 4, the heat conductivility of cold air heating in-process normal water is good to insulating tube 4 can also prevent thermal loss, thereby makes the waste heat recovery performance of flue gas better.

A deep condensation filtering device is arranged in a smoke outlet 3 of a conveying pipe 1, the deep condensation filtering device comprises two filter screens 11 fixedly arranged at the inner top of the smoke outlet 3, the lower end of the conveying pipe 1 is fixedly connected with a recovery box 12 communicated with the lower end of the conveying pipe 1, the lower ends of the two filter screens 11 extend into the recovery box 12, three spray pipes 14 are fixedly arranged at the inner top of the smoke outlet 3, the three spray pipes 14 and the two filter screens 11 are arranged in a mutually staggered mode, a plurality of uniformly distributed nozzles 15 are arranged at the lower ends of the three spray pipes 14, a drain pipe 13 is arranged at the lower end of the recovery box 12, a filter plate 16 is fixedly arranged in the recovery box 12, smoke dust is filtered through the two filter screens 11 after smoke waste heat is recovered, the pollution of the smoke gas to the air is reduced, in the filtering process of the filter screens 11, the spray pipes 14 spray water downwards through the nozzles 15, prevent that filter screen 11 from appearing blockking up to can also carry out further cooling and dust removal to the flue gas, promote purifying effect.

Conveyer pipe 1's inside is rotated through support 17 and is connected with pivot 18, the scraper blade 19 that two symmetries of outer wall fixedly connected with of pivot 18 set up, two scraper blade 19's end all with the inner wall laminating of first spiral pipe 7, conveyer pipe 1's outer wall fixed mounting has motor 20, the equal fixedly connected with sprocket 21 of the output of motor 20 and the one end of pivot 18, connect through chain 22 between two sprockets 21, during waste heat recovery, motor 20 drives pivot 18 through two sprockets 21 and chain 22 and rotates, pivot 18 drives two scraper blade 19 and scrapes the clearance of moving to the inner wall of first spiral pipe 7, thereby it is not hard up with the smoke and dust on the inner wall of first spiral pipe 7, and blow to filter screen 11 and go on filtering under the effect of flue gas.

The outer wall of conveyer pipe 1 is located insulating tube 4 internal fixation and is connected with the flight 24 that encircles the outer wall, and flight 24 can make the cold air carry out the transport in spiral route in insulating tube 4 to make the more abundant contact of cold air and second spiral pipe 8's outer wall, promote the heat conduction effect.

The chain 22 and the outer walls of the two chain wheels 21 are sleeved with protective covers 23 to prevent dust from blocking the chain 22.

All be equipped with the heat preservation clearance between the inner wall of second spiral pipe 8 and insulating tube 4 and the outer wall of conveyer pipe 1, the clearance can make the more abundant contact and the heat conduction of cold air and second spiral pipe 8 and conveyer pipe 1's outer wall.

The working principle is as follows: in the utility model, in the using process, the high temperature smoke enters the conveying pipe 1 from the smoke inlet 2 and then is discharged from the smoke outlet 3, and the cold air enters the heat preservation pipe 4 through the air inlet pipe 5 and then is discharged from the air outlet pipe 6, during the smoke passes through the conveying pipe 1, the heat preservation pipe 4 can greatly reduce the temperature of the smoke and greatly lose through the surface of the conveying pipe 1, and can also heat the cold air in the heat preservation pipe 4, and in the conveying pipe 1, the first spiral pipe 7 and the water inside the first spiral pipe can efficiently absorb heat to the smoke, the circulating pump 10 conveys the heat in the first spiral pipe 7 to the second spiral pipe 8 and then heats the cold air in the heat preservation pipe 4, the heat conductivity of the water in the cold air heating process is good, and the heat preservation pipe 4 can also prevent the heat from losing, thereby the waste heat recovery performance of the smoke is better, after the waste heat of the flue gas is recovered, the flue gas is filtered by the two filter screens 11 to reduce the pollution of the flue gas to the air, and, during the filtering process of the filter net 11, the shower pipe 14 sprays water downward through the spray nozzles 15, thereby flushing the two filter screens 11, preventing the filter screens 11 from being blocked, further cooling and dedusting the flue gas, improving the purification effect, the flushed sewage flows into the recovery tank 12 to be filtered by the filter plate 16 and finally discharged by the drain pipe 13, the discharged water can be reused after being filtered by the filter plate 16, the waste of water resources is reduced, meanwhile, the motor 20 drives the rotating shaft 18 to rotate through the two chain wheels 21 and the chain 22, the rotating shaft 18 drives the two scraping plates 19 to scrape and clean the inner wall of the first spiral pipe 7, thereby loosening the smoke dust on the inner wall of the first spiral pipe 7 and blowing the smoke dust onto the filter screen 11 for filtering under the action of the smoke gas.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The utility model provides a flue gas degree of depth condensation waste heat recovery device, includes conveyer pipe (1), its characterized in that, the both ends of conveyer pipe (1) are equipped with into mouth of cigarette (2) and outlet flue (3) respectively, first spiral pipe (7) of fixedly connected with and inner wall laminating in conveyer pipe (1), the outer wall cover of conveyer pipe (1) is equipped with insulating tube (4), the both ends of insulating tube (4) are equipped with intake pipe (5) and outlet duct (6) respectively, fixedly connected with second spiral pipe (8) in insulating tube (4), all through connecting pipe (9) fixed connection between the both ends of first spiral pipe (7) and second spiral pipe (8), the middle part fixed mounting of connecting pipe (9) has circulating pump (10), be equipped with degree of depth condensation filter equipment in outlet flue (3) of conveyer pipe (1).

2. The deep condensation waste heat recovery device for flue gas according to claim 1, wherein the deep condensation filter device comprises two filter screens (11) fixedly installed at the inner top of the flue gas outlet (3), the lower end of the conveying pipe (1) is fixedly connected with a recovery box (12) communicated with the conveying pipe, the lower ends of the two filter screens (11) extend into the recovery box (12), the inner top of the flue gas outlet (3) is fixedly provided with three spray pipes (14), the three spray pipes (14) and the two filter screens (11) are arranged in a staggered manner, the lower ends of the three spray pipes (14) are provided with a plurality of uniformly distributed nozzles (15), the lower end of the recovery box (12) is provided with a drain pipe (13), and the filter screens (16) are fixedly installed in the recovery box (12).

3. The deep condensation waste heat recovery device for flue gas according to claim 1, characterized in that a rotating shaft (18) is rotatably connected inside the conveying pipe (1) through a support (17), two symmetrically arranged scrapers (19) are fixedly connected to the outer wall of the rotating shaft (18), the tail ends of the two scrapers (19) are attached to the inner wall of the first spiral pipe (7), a motor (20) is fixedly mounted on the outer wall of the conveying pipe (1), a chain wheel (21) is fixedly connected to the output end of the motor (20) and one end of the rotating shaft (18), and the two chain wheels (21) are connected through a chain (22).

4. The deep condensation waste heat recovery device for flue gas according to claim 1, characterized in that the outer wall of the conveying pipe (1) is positioned in the heat preservation pipe (4) and is fixedly connected with a spiral sheet (24) surrounding the outer wall.

5. The deep condensation waste heat recovery device for flue gas according to claim 3, characterized in that the outer walls of the chain (22) and the two chain wheels (21) are sleeved with protective covers (23).

6. The deep condensation waste heat recovery device for flue gas according to claim 1, wherein a heat insulation gap is arranged between the second spiral pipe (8) and the inner wall of the heat insulation pipe (4) and between the second spiral pipe and the outer wall of the conveying pipe (1).