CN218120657U

CN218120657U - Shuttle kiln flue gas waste heat utilization system

Info

Publication number: CN218120657U
Application number: CN202221503447.7U
Authority: CN
Inventors: 司学歌; 边敦超; 殷培义; 马家俊
Original assignee: Zibo Kehao Thermal Engineering Co ltd
Current assignee: Zibo Kehao Thermal Engineering Co ltd
Priority date: 2022-06-15
Filing date: 2022-06-15
Publication date: 2022-12-23
Anticipated expiration: 2032-06-15

Abstract

The utility model relates to a shuttle kiln flue gas waste heat utilization system, including shuttle kiln and smoke exhaust fan, smoke exhaust fan's exit linkage has the chimney, the exhanst gas outlet of shuttle kiln is connected with burns burning furnace, the exhaust port that burns burning furnace is connected with air heat exchanger, air heat exchanger's steam outlet is connected with the exhaust column, the suction opening of smoke exhaust fan is connected to the exhaust column, air heat exchanger's air conditioning exit linkage has defeated tuber pipe, defeated tuber pipe is connected with combustion fan, combustion fan is connected with combustion-supporting conveyer pipe, the combustion-supporting wind gap that burns burning furnace is connected to the combustion-supporting conveyer pipe other end. The utility model discloses can be with the heat that contains in the flue gas can make full use of, the heat exchanger is installed at burning furnace back, burns the high temperature flue gas that burning furnace produced through the heat exchanger, and hot-blast combustion-supporting wind gap that can let in burning furnace after the heat exchanger heat transfer retrieves heat energy and is used for hot-blast combustion-supporting, better utilizes heat energy.

Description

Shuttle kiln flue gas waste heat utilization system

Technical Field

The utility model relates to a shuttle kiln flue gas waste heat utilization system belongs to waste gas incineration processing technology field.

Background

When the material containing organic matter emission is sintered at high temperature, a large amount of organic matter is emitted. The method is characterized in that no equipment for independently treating organic emission exists at first, the kiln and accessory equipment are different from a conventional kiln in size, generally, the kiln and the accessory equipment discharge smoke in an underground flue, a heat exchanger is arranged in the underground flue, and a smoke discharge fan is arranged at the tail end of the flue to exhaust and empty the smoke.

When environmental awareness is stronger and stronger, the common practice is to install an incinerator behind the smoke exhaust fan, and only add an equipment in the original system, so that reasonable layout utilization is not achieved.

There are two main problems with this approach:

1. in order to protect the smoke exhaust fan, the temperature of the smoke is controlled not to exceed 250 ℃ when the smoke passes through the smoke exhaust fan, so that certain cold air is required to be doped to reduce the temperature of the smoke to 250 ℃ when the temperature of the smoke is too high. The incinerator is required to heat the flue gas to 900 ℃ to decompose the organic matters in the flue gas. Therefore, the heat contained in the flue gas can not be fully utilized, and the doped cold air is heated to 900 ℃ at the same time, so that the energy consumption of the incinerator is increased under the flow, and the energy is wasted.

2. The incinerator is arranged at the rearmost end of the smoke discharge system, the working temperature of the incinerator is 900 ℃, the incinerated smoke is directly exhausted and cannot pass through the heat exchanger, and the high-temperature smoke waste heat generated by the incinerator cannot be fully utilized.

SUMMERY OF THE UTILITY MODEL

The utility model provides a shuttle kiln flue gas waste heat utilization system solves the problem that present shuttle kiln flue gas waste heat can not fine recycle.

The utility model relates to a shuttle kiln flue gas waste heat utilization system, including shuttle kiln and smoke exhaust fan, smoke exhaust fan's exit linkage has the chimney, and the exhanst gas outlet of shuttle kiln is connected with and burns burning furnace, and the exhaust port that burns burning furnace is connected with air heat exchanger, and air heat exchanger's steam outlet is connected with the exhaust column, and the suction opening of smoke exhaust fan is connected to the exhaust column, and air heat exchanger's air conditioning exit linkage has defeated tuber pipe, and defeated tuber pipe is connected with combustion-supporting fan, and combustion-supporting fan is connected with combustion-supporting conveyer pipe, and the combustion-supporting wind gap that burns burning furnace is connected to the combustion-supporting conveyer pipe other end. The combustion-supporting fan is a variable frequency fan.

Preferably, the steam outlet of air heat exchanger is connected with a tobacco pipe, air heat exchanger one side is equipped with the heat transfer cask, be equipped with heat transfer coil pipe in the heat transfer cask, the bottom of heat transfer cask is equipped with auxiliary barrel, all be fixed with the cloth wind disc from top to bottom in the auxiliary barrel, a plurality of heat exchange tubes of fixedly connected with between the upper and lower cloth wind disc, the tobacco pipe is connected to the heat transfer coil pipe upper end, heat transfer coil pipe's lower extreme and the cloth wind disc fixed connection of below, the cloth wind disc of top is connected to the exhaust column, upper portion one side fixedly connected with inlet tube of auxiliary barrel, be equipped with the delivery port on auxiliary barrel's the lower part lateral wall, be equipped with the drinking-water pipe on heat transfer cask's the lateral wall, the drinking-water union coupling has the conveyer pump, the exit linkage of conveyer pump has the conveyer pipe. Can carry out the secondary heat transfer to the flue gas, the heat energy storage after the heat transfer is in the hot-water, and these hot-water can be carried the hot water of bathing of factory heating or workman through delivery pump and conveyer pipe. The incinerator is a gas incinerator.

Preferably, a plurality of water outlets are uniformly formed in the side wall of the lower portion of the auxiliary barrel, the water pumping pipe is arranged on the middle lower portion of the heat exchange water barrel, and a water pump is arranged on the water inlet pipe. Cold water that can be through the water pump gets into auxiliary barrel from the inlet tube fast, carries out quick heat transfer with the hot flue gas in the heat exchange tube, then discharges from the delivery port, gets into the heat transfer cask, carries out the secondary heat transfer with heat exchange coil pipe in the heat transfer cask, and the heat transfer effect is better.

Preferably, the inner wall of the heat exchange water barrel is provided with a heat insulation layer. Can better preserve heat.

The utility model discloses, following beneficial effect has:

the incinerator is arranged at the initial stage of smoke discharge, smoke generated by the shuttle kiln directly enters the incinerator after leaving a hearth, at the moment, the heat loss of the smoke in a flue is less, cooling air is not required to be doped for cooling, a large amount of heat is also contained, the smoke is heated to 900 ℃ in the incinerator, the heat contained in the smoke can be fully utilized, the heat exchanger is arranged at the back of the incinerator, high-temperature smoke generated by the incinerator passes through the heat exchanger, hot air after heat exchange of the heat exchanger can be introduced into a combustion-supporting air port of the incinerator, and heat energy is recovered for hot air combustion supporting, so that the heat energy is better utilized.

Drawings

Fig. 1 is a schematic structural diagram of embodiment 1 of the present invention;

fig. 2 is a schematic structural diagram of embodiment 2 of the present invention;

FIG. 3 is a schematic structural diagram of a heat exchange water bucket;

in the figure: 1. a shuttle kiln; 2. a combustion fan; 3. a wind delivery pipe; 4. an incinerator; 5. an air heat exchanger; 6. a combustion-supporting delivery pipe; 7. a smoke exhaust fan; 8. a chimney; 9. an exhaust pipe; 10. a delivery pipe; 11. a delivery pump; 12. a water pumping pipe; 13. discharging the smoke tube; 14. a heat exchange water bucket; 15. the heat exchange device comprises a heat exchange coil 16, an auxiliary barrel 17, a water inlet pipe 18, a water pump 19, an air distribution disc 20, a water outlet 21 and a heat exchange pipe.

Detailed Description

The present invention will be further described with reference to the following examples.

Embodiment 1, as shown in fig. 1, the utility model relates to a 1, shuttle kiln flue gas waste heat utilization system, including shuttle kiln 1 and smoke exhaust fan 7, the exit linkage of smoke exhaust fan 7 has chimney 8, its characterized in that: the flue gas outlet of the shuttle kiln 1 is connected with an incinerator 4, the smoke outlet of the incinerator 4 is connected with an air heat exchanger 5, the hot gas outlet of the air heat exchanger 5 is connected with an exhaust pipe 9, the exhaust pipe 9 is connected with the suction opening of a smoke exhaust fan 7, the cold gas outlet of the air heat exchanger 5 is connected with a wind conveying pipe 3, the wind conveying pipe 3 is connected with a combustion-supporting fan 2, the combustion-supporting fan 2 is connected with a combustion-supporting conveying pipe 6, and the other end of the combustion-supporting conveying pipe 6 is connected with the combustion-supporting air opening of the incinerator 4.

The working principle is as follows: the flue gas that shuttle kiln 1 produced leaves furnace back direct access and burns burning furnace 4, the heat loss of flue gas in the flue is less this moment, also need not mix the cooling air cooling yet, still include a large amount of heat, heat to 900 ℃ in burning furnace 4, the heat that contains in the flue gas can make full use of, flue gas after the burning gets into the steam import of heat exchanger 5, burn the high temperature flue gas that burning furnace 4 produced and pass through heat exchanger 5, the flue gas is cooled down, flue gas after the cooling discharges from chimney 8 through smoke exhaust fan 7, the cold air after the heat exchange of air heat exchanger 5 becomes hot-blast air and gets into combustion fan 2 from defeated tuber pipe 3, then get into burning furnace 4 through combustion-supporting conveyer pipe 6 and carry out hot-blast combustion-supporting, it can obtain make full use of burning waste heat.

Embodiment 2, as shown in fig. 2 and 3, based on embodiment 1, a hot gas outlet of an air heat exchanger 5 is connected with a smoke outlet pipe 13, one side of the air heat exchanger 5 is provided with a heat exchange water barrel 14, a heat exchange coil 15 is arranged in the heat exchange water barrel 14, the bottom of the heat exchange water barrel 14 is provided with an auxiliary barrel 16, air distribution disks 19 are fixed in the auxiliary barrel 16 from top to bottom, a plurality of heat exchange pipes 21 are fixedly connected between the upper and lower air distribution disks 19, the upper end of the heat exchange coil 15 is connected with the smoke outlet pipe 13, the lower end of the heat exchange coil 15 is fixedly connected with the lower air distribution disk 19, an air exhaust pipe 9 is connected with the upper air distribution disk 19, one side of the upper portion of the auxiliary barrel 16 is fixedly connected with an water inlet pipe 17, the lower side wall of the auxiliary barrel 16 is provided with a water outlet 20, the side wall of the heat exchange water barrel 14 is provided with a water exhaust pipe 12, the water exhaust pipe 12 is connected with a delivery pump 11, and an outlet of the delivery pipe 11 is connected with a delivery pipe 10.

A plurality of water outlets 20 are uniformly arranged on the side wall of the lower part of the auxiliary barrel 16, the water pumping pipe 12 is arranged at the middle lower part of the heat exchange water barrel 14, and the water inlet pipe 17 is provided with a water pump 18.

An insulating layer is arranged on the inner wall of the heat exchange water barrel 14.

The flue gas after heat exchange of the air heat exchanger 5 enters the heat exchange coil 15 through the smoke outlet pipe 13 to exchange heat with water in the heat exchange water bucket 14, then enters the air distribution disc 19 below, then enters the air distribution disc 19 above through the heat exchange pipe 21, then enters the smoke exhaust fan 7 from the exhaust pipe 9 and is discharged from the chimney 8, the flue gas contacts with the cold water which flows rapidly and is pumped into the auxiliary bucket 16 by the water pump 18 when passing through the heat exchange pipe 21, the heat energy of the flue gas in the heat exchange pipe 21 is taken away rapidly, and the cold water enters the heat exchange water bucket 14 from the water outlet 20 after heat exchange and then enters the heat exchange water bucket 15 to exchange heat.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

In the description of the present invention, the terms "inside", "outside", "longitudinal", "lateral", "up", "down", "top", "bottom", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description of the present invention rather than requiring the present invention to be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.

Claims

1. The utility model provides a shuttle kiln flue gas waste heat utilization system, includes shuttle kiln (1) and smoke exhaust fan (7), and the exit linkage of smoke exhaust fan (7) has chimney (8), its characterized in that: the flue gas outlet of shuttle kiln (1) is connected with burns burning furnace (4), the exhaust port that burns burning furnace (4) is connected with air heat exchanger (5), the steam outlet of air heat exchanger (5) is connected with exhaust column (9), the suction opening of smoke exhaust fan (7) is connected in exhaust column (9), the air conditioning exit linkage of air heat exchanger (5) has defeated tuber pipe (3), defeated tuber pipe (3) are connected with combustion-supporting fan (2), combustion-supporting fan (2) are connected with combustion-supporting conveyer pipe (6), the combustion-supporting wind gap that burns burning furnace (4) is connected to combustion-supporting conveyer pipe (6) other end.

2. The shuttle kiln flue gas waste heat utilization system of claim 1, wherein: the hot air outlet of the air heat exchanger (5) is connected with a smoke outlet pipe (13), one side of the air heat exchanger (5) is provided with a heat exchange bucket (14), a heat exchange coil (15) is arranged in the heat exchange bucket (14), the bottom of the heat exchange bucket (14) is provided with an auxiliary bucket (16), air distribution disks (19) are fixed in the auxiliary bucket (16) from top to bottom, a plurality of heat exchange pipes (21) are fixedly connected between the upper air distribution disks (19) and the lower air distribution disks (19), the smoke outlet pipe (13) is connected to the upper end of the heat exchange coil (15), the lower end of the heat exchange coil (15) is fixedly connected with the air distribution disks (19) below, the air exhaust pipe (9) is connected with the air distribution disks (19) above, one side of the upper portion of the auxiliary bucket (16) is fixedly connected with a water inlet pipe (17), the lower portion side wall of the auxiliary bucket (16) is provided with a water outlet (20), a water exhaust pipe (12) is arranged on the side wall of the heat exchange bucket (14), the water exhaust pipe (12) is connected with a conveying pump (11), and an outlet of the conveying pump (11) is connected with a conveying pipe (10).

3. The shuttle kiln flue gas waste heat utilization system of claim 2, wherein: a plurality of water outlets (20) are uniformly arranged on the side wall of the lower part of the auxiliary barrel (16), the water pumping pipe (12) is arranged at the middle lower part of the heat exchange water barrel (14), and a water pump (18) is arranged on the water inlet pipe (17).

4. The shuttle kiln flue gas waste heat utilization system of claim 3, wherein: the inner wall of the heat exchange water barrel (14) is provided with a heat preservation layer.