CN216011780U

CN216011780U - Lime kiln waste heat recovery device

Info

Publication number: CN216011780U
Application number: CN202121010652.5U
Authority: CN
Inventors: 陈振雨; 向长清
Original assignee: Hubei Jinshenglan Metallurgical Technology Co Ltd
Current assignee: Hubei Jinshenglan Metallurgical Technology Co Ltd
Priority date: 2021-05-12
Filing date: 2021-05-12
Publication date: 2022-03-11
Anticipated expiration: 2031-05-12

Abstract

The utility model discloses a lime kiln waste heat recovery device which comprises a shell, a connecting pipe, a heat conducting plate, a sealing cover and branch pipes, wherein the connecting pipe is inserted and installed on one side of the lower end of the inner wall of the shell, an air inlet pipe is inserted and installed on one side of the outer wall of the lower end of the connecting pipe, the connecting pipe penetrates through the outer walls of the two sides of the shell and is provided with the branch pipes which are equidistantly and parallelly distributed, the heat conducting plates which are equidistantly and parallelly distributed are installed on the two sides of the inner wall of the shell and are distributed in a cross shape, the heat conducting plates penetrate through the outer wall of one end of the shell and are provided with heat dissipation plates, the heat dissipation plates are positioned in the sealing cover, and the sealing cover is welded at the upper ends of the outer walls of the two sides of the shell. According to the utility model, the sealing cover, the heat conducting plate and the connecting pipe are arranged, so that the effect of heat recovery of waste gas is achieved, workers can reuse the heated heat exchange gas through the exhaust pipe, the heat waste is avoided, the cost of using a cooler is avoided, the reduction of waste gas treatment cost is ensured, and the device is beneficial to equipment popularization.

Description

Lime kiln waste heat recovery device

Technical Field

The utility model relates to the technical field of lime kilns, in particular to a lime kiln waste heat recovery device.

Background

The lime kiln is a thermal equipment for heating and treating bulk or slurry materials, is used for roasting active lime and light-burned dolomite used in steel plants and iron alloy plants, is widely used in the fields of cement building materials, nonferrous metallurgy, refractory materials and the like, and has the approximate working flow as follows: qualified limestone is lifted by a lifter and is transported into a storage bin at the top of the preheater. The feed bin at the top of the preheater is used for controlling the feeding amount by an upper material level meter and a lower material level meter, and then limestone is uniformly distributed into each chamber of the preheater through a discharging pipe. Limestone is heated to about 900 ℃ by the kiln flue gas at 1150 ℃ in the preheater, about 30 percent of the limestone is decomposed and pushed into the rotary kiln by the hydraulic push rod, and the limestone is decomposed into CaO and CO2 by calcination in the rotary kiln. The limestone generated after decomposition enters a cooler, and is cooled to below 100 ℃ by blown cold air in the cooler and discharged. The hot air with 600 ℃ after heat exchange enters the kiln and is mixed with coal gas for combustion. The waste gas is cooled by a multi-pipe cooler, enters a bag type dust collector through a draught fan and then enters a chimney through an exhaust fan.

Waste gas has higher temperature, and current equipment does not carry out heat recovery to exhaust gas temperature, not only causes the waste, and the high temperature exhaust emission back is comparatively serious to atmospheric pollution, if cool off through the cooler, leads to the treatment cost higher, and the later maintenance cost is higher equally, is unfavorable for equipment popularization.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a lime kiln waste heat recovery device, which has the advantages of adding a waste gas heat recovery device and solves the problem of lacking the waste gas heat recovery device.

In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides a lime kiln waste heat recovery device, includes shell, connecting pipe, heat-conducting plate, sealed cowling and bleeder, the connecting pipe is installed in pegging graft in shell inner wall lower extreme one side, the intake pipe is installed in pegging graft in connecting pipe lower extreme outer wall one side, the connecting pipe runs through shell both sides outer wall and all pegs graft and install the bleeder of equidistance parallel distribution, the heat-conducting plate of equidistance parallel distribution is all installed to shell inner wall both sides, the sealed cowling has all been welded to shell both sides outer wall upper end.

Preferably, the nozzles which are distributed in parallel at equal intervals are inserted and installed on one side of the outer wall of the lower end of the branch pipe.

Preferably, the inlet tube is installed in the grafting of shell one side outer wall, the shell deviates from inlet tube one side outer wall embedding and installs the observation board, the observation board is located the inlet tube lower extreme.

Preferably, the exhaust pipe is installed in the grafting of shell upper end outer wall one side, the drain pipe is installed in the grafting of shell lower extreme outer wall one side.

Preferably, the heat-conducting plate is the crisscross distribution, the heat-conducting plate runs through shell one end outer wall and installs the heating panel, the heating panel is located inside the sealed cowling.

Preferably, the air inlet pipe is installed in the grafting of sealed cowling one side outer wall, the sealed cowling deviates from air inlet pipe one side outer wall and installs the exhaust pipe in the grafting.

Compared with the prior art, the utility model has the following beneficial effects: the utility model achieves the effect of heat recovery of waste gas by arranging the sealing cover, the heat conducting plate and the connecting pipe, an external water pump pressurizes and exchanges heat, the heat enters the shell through the water inlet pipe, the water level is lower than the water inlet pipe, the waste gas enters the connecting pipe through the air inlet pipe after being pressurized, and is uniformly sprayed out through the branch pipe and the nozzle, the waste gas is injected into the heat exchange water, the heat exchange water achieves the purpose of heat exchange, the purpose of filtering impurities in the waste gas is achieved, the emission cleanness of the waste gas is improved, when the heat exchange water generates high-temperature and high-pressure steam, the steam flows upwards, the steam is discharged through the exhaust pipe after being contacted with the heat conducting plate, the heat conducting plate absorbs the temperature in the steam and is transmitted to the heat radiating plate, the heat exchange gas enters the sealing cover through the air inlet pipe and takes away the temperature of the heat radiating plate, thereby the purpose of heat recovery is achieved, and workers can recycle the heated heat exchange gas through the exhaust pipe, the waste of heat is avoided, the cost of using a cooler is avoided, the reduction of the waste gas treatment cost is ensured, and the equipment popularization is facilitated.

Drawings

FIG. 1 is a schematic cross-sectional view of the housing structure of the present invention;

FIG. 2 is a schematic top view of the housing structure of the present invention;

fig. 3 is an enlarged schematic view of the connecting tube structure of the present invention.

In the figure: 1. a housing; 11. an observation plate; 12. a water inlet pipe; 13. a heat conducting plate; 14. a sealing cover; 15. an exhaust pipe; 16. a heat dissipation plate; 17. an exhaust duct; 18. a drain pipe; 19. an air inlet pipe; 2. a connecting pipe; 21. an air inlet pipe; 22. a branch pipe; 23. and (4) a nozzle.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front", "rear", "both ends", "one end", "the other end", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "connected," and the like are to be construed broadly, such as "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1 to 3, two embodiments of the present invention are provided:

the first embodiment is as follows: the utility model provides a lime kiln waste heat recovery device, which comprises an outer shell 1, connecting pipe 2, heat-conducting plate 13, sealing boot 14 and bleeder 22, connecting pipe 2 is installed in pegging graft in 1 inner wall lower extreme one side of shell, 2 inside check valves that are provided with of connecting pipe, avoid 1 inside heat transfer water of shell to pass through 2 discharges of connecting pipe, intake pipe 21 is installed in 2 lower extreme outer wall one sides of connecting pipe pegs graft, connecting pipe 2 runs through 1 both sides outer wall of shell and all pegs graft and install equidistance parallel distribution's bleeder 22, equidistant parallel distribution's heat-conducting plate 13 is all installed to 1 inner wall both sides of shell, the vapor temperature is absorbed the back by heat-conducting plate 13, the drop that the vapor condenses can drip and can be 1 inside the shell, sealing boot 14 has all been welded on 1 both sides outer wall upper end of shell, equidistant parallel distribution's nozzle 23 is installed in 22 lower extreme outer wall one side of bleeder in the grafting.

The inlet tube 12 is installed in the grafting of 1 one side outer wall of shell, and shell 1 deviates from the embedding of 12 one sides outer walls of inlet tube and installs observation board 11, and observation board 11 is located the 12 lower extremes of inlet tube, and the staff observes the water level that board 11 can observe the heat transfer water.

The blast pipe 15 is installed in the grafting of 1 upper end outer wall one side of shell, 1 lower extreme outer wall one side of shell is pegged graft and is installed drain pipe 18, when heat transfer water needs to be changed, heat transfer water passes through drain pipe 18 and discharges, external water pump pressurization heat transfer gets into 1 inside the shell through inlet tube 12, and the water level is less than inlet tube 12, after the waste gas pressurization, get into 2 insides of connecting pipe through intake pipe 21, and evenly spout through bleeder 22 and nozzle 23, waste gas is poured into and is traded hot water inside, the heat transfer water has reached the purpose of heat exchange, and the mesh of impurity in the filtration waste gas has been reached, the exhaust emission cleanliness factor has been improved.

Example two: the utility model provides a lime kiln waste heat recovery device, which comprises an outer shell 1, connecting pipe 2, heat-conducting plate 13, sealing boot 14 and bleeder 22, connecting pipe 2 is installed in pegging graft in 1 inner wall lower extreme one side of shell, the intake pipe 21 is installed in 2 lower extreme outer wall one sides of connecting pipe pegs graft, connecting pipe 2 runs through 1 both sides outer wall of shell and all pegs graft and install equidistance parallel distribution's bleeder 22, equidistant parallel distribution's heat-conducting plate 13 is all installed to 1 inner wall both sides of shell, 1 both sides outer wall upper end of shell all welds sealing boot 14, heat-conducting plate 13 is the fork form and distributes, the contact time of vapor and heat-conducting plate 13 has been guaranteed in the cross distribution, the absorption effect of heat-conducting plate 13 to the vapor temperature has been guaranteed, heat-conducting plate 13 runs through 1 one end outer wall of shell and installs heating panel 16, heating panel 16 is located inside sealing boot 14.

The air inlet pipe 19 is installed in the grafting of 14 one sides outer wall of sealed cowling, the exhaust pipe 17 is installed in the grafting of 14 one sides outer wall that deviates from air inlet pipe 19, when high temperature high pressure water vapor appears in the heat transfer water, water vapor upwards flows, water vapor and heat-conducting plate 13 contact back, discharge through blast pipe 15, heat-conducting plate 13 absorbs the temperature in the water vapor, and transmit to heating panel 16, heat transfer gas passes through inside the air inlet pipe 19 gets into sealed cowling 14, and take away the temperature of heating panel 16, thereby heat recovery's purpose has been reached, the staff can carry out reuse to the heat transfer gas after the heating through exhaust pipe 17, avoid heat waste, the expense of using the cooler has been avoided, guarantee the exhaust-gas treatment cost reduction, do benefit to equipment popularization.

The working principle is as follows: the external water pump is pressurized and exchanges heat, enters the inner part of the shell 1 through the water inlet pipe 12, the water level is lower than the water inlet pipe 12, after the waste gas is pressurized, enters the inside of the connecting pipe 2 through the air inlet pipe 21 and is uniformly sprayed out through the branch pipe 22 and the nozzle 23, the waste gas is injected into the heat exchange water, the heat exchange water achieves the purpose of heat exchange and the purpose of filtering impurities in the waste gas, the cleanness of the waste gas emission is improved, when the heat exchange water generates high-temperature and high-pressure steam, the steam flows upwards and contacts the heat conduction plate 13, discharged through the exhaust pipe 15, the heat conducting plate 13 absorbs the temperature of the water vapor and transfers to the heat radiating plate 16, the heat exchange gas enters the inside of the sealed cover 14 through the air inlet pipe 19 and takes away the temperature of the heat radiating plate 16, therefore, the purpose of heat recovery is achieved, and workers can reuse the heated heat exchange gas through the exhaust pipe 17.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. The utility model provides a lime kiln waste heat recovery device, includes shell (1), connecting pipe (2), heat-conducting plate (13), sealed cowling (14) and bleeder (22), its characterized in that: connecting pipe (2) are installed in pegging graft in shell (1) inner wall lower extreme one side, connecting pipe (2) lower extreme outer wall one side is pegged graft and is installed intake pipe (21), connecting pipe (2) run through shell (1) both sides outer wall and all peg graft branch pipe (22) of installing equidistance parallel distribution, heat-conducting plate (13) of equidistance parallel distribution are all installed to shell (1) inner wall both sides, all welded seal cover (14) on shell (1) both sides outer wall.

2. The lime kiln waste heat recovery device of claim 1, characterized in that: and nozzles (23) which are distributed in parallel at equal intervals are inserted and installed on one side of the outer wall of the lower end of the branch pipe (22).

3. The lime kiln waste heat recovery device of claim 1, characterized in that: the utility model discloses a water purifier, including shell (1), shell (1) one side outer wall is pegged graft and is installed inlet tube (12), shell (1) deviates from inlet tube (12) one side outer wall embedding and installs observation board (11), observation board (11) are located inlet tube (12) lower extreme.

4. The lime kiln waste heat recovery device of claim 1, characterized in that: the exhaust pipe (15) is installed in the grafting of shell (1) upper end outer wall one side, shell (1) lower extreme outer wall one side is pegged graft and is installed drain pipe (18).

5. The lime kiln waste heat recovery device of claim 1, characterized in that: the heat-conducting plate (13) are in a cross distribution, the heat-conducting plate (13) penetrates through the outer wall of one end of the shell (1) and is provided with a heat dissipation plate (16), and the heat dissipation plate (16) is located inside the sealing cover (14).

6. The lime kiln waste heat recovery device of claim 1, characterized in that: the air inlet pipe (19) is installed in the grafting of sealed cowling (14) one side outer wall, sealed cowling (14) deviate from air inlet pipe (19) one side outer wall and peg graft and install exhaust pipe (17).