CN219239538U

CN219239538U - Lime kiln high-temperature flue gas recycling device

Info

Publication number: CN219239538U
Application number: CN202320315811.5U
Authority: CN
Inventors: 陈嫩俤; 汪道林; 熊享军; 林尚伟
Original assignee: Guangshui Huaxin Metallurgical Industry Co ltd
Current assignee: Guangshui Huaxin Metallurgical Industry Co ltd
Priority date: 2023-02-27
Filing date: 2023-02-27
Publication date: 2023-06-23
Anticipated expiration: 2033-02-27

Abstract

The utility model discloses a lime kiln high-temperature flue gas recycling device, which relates to the field of lime kiln production equipment, and aims to solve the technical problem that waste is caused by inconvenient recycling of flue gas waste heat of a lime kiln on a limestone preheating program.

Description

Lime kiln high-temperature flue gas recycling device

Technical Field

The utility model belongs to the field of lime kiln production equipment, and particularly relates to a lime kiln high-temperature flue gas recycling device.

Background

The lime kiln is used as equipment for firing lime, and is in a high-heat state for a long time, or is heated by electric heating or coal combustion, high-heat flue gas generated in the kiln is discharged outwards in time, but the high-heat flue gas has very high heat energy, if the high-heat flue gas is not utilized, the production of the lime kiln is wasted, the lime in a limestone state needs to preheat materials before firing, the limestone is subjected to preliminary thermal decomposition, then is put into the kiln, the temperature is increased for firing, and the existing limestone preheating generally adopts an independent heat supply system, and has low combination degree with the lime kiln.

The utility model discloses a traditional Chinese patent with the publication number of CN218262303U, which belongs to the technical field of lime kilns and comprises a base and a kiln body arranged on one side of the surface of the base, wherein a storage cavity, a combustion cavity and an ash discharging cavity are arranged in the kiln body, two first baffles are slidably arranged at the boundary of the storage cavity and the combustion cavity, air cylinders are symmetrically arranged on two sides of the kiln body, the output ends of the air cylinders extend into the kiln body to be arranged at one ends of the two first baffles, heat return pipes are symmetrically arranged on two sides of the kiln body, one ends of the heat return pipes are in through connection with the combustion cavity, the other ends of the heat return pipes are in through connection with the storage cavity, a fire collecting box is arranged on the outer wall of the combustion cavity, a combustion pipe is fixedly arranged on one side of the fire collecting box, the end part of the combustion pipe extends into the combustion cavity, a feeding port is arranged at the top of the storage cavity, and a second baffle is arranged in a sliding manner. Through setting up storage chamber, burning chamber and heat return pipe, the material is when firing, and the flue gas of production gets into the storage chamber through the heat return pipe, and the flue gas preheats the material in the storage chamber.

Therefore, aiming at the condition that the waste is caused by inconvenient cyclic utilization of the flue gas waste heat of the lime kiln on a limestone preheating program, a novel lime kiln flue gas cyclic utilization device is developed, and the high-temperature flue gas generated during firing of the lime kiln is directly acted on a limestone storage container to carry out effective waste heat on limestone.

Disclosure of Invention

(1) Technical problem to be solved

Aiming at the defects of the prior art, the utility model aims to provide a lime kiln high-temperature flue gas recycling device which aims at solving the technical problem that waste is caused by inconvenient recycling of flue gas waste heat of a lime kiln on a limestone preheating program.

(2) Technical proposal

In order to solve the technical problems, the utility model provides the high-temperature flue gas recycling device of the lime kiln, which comprises a base, a kiln body arranged at the upper end of the base, and a storage box arranged above the kiln body, wherein an end groove is arranged at the upper end of the kiln body, a smoke outlet positioned in the middle of the end groove is arranged at the upper end of the kiln body, a sliding seat is arranged at the outer side of the kiln body, a base is arranged in the middle of the sliding seat, the base is arranged at the inner side of the end groove, a connecting disc is arranged at the upper end of the sliding seat, a smoke guide pipe is arranged between the connecting disc and the lower end of the storage box, and a heat conducting partition plate is arranged at the inner side of the storage box.

When the lime kiln high-temperature flue gas recycling device adopting the technical scheme is used, a user moves the sliding seat to the middle part of the kiln body, the smoke outlet is aligned to the base, the smoke guide pipe is communicated with the storage box, then the handle is put down, the blanking pipe falls into the feeding hole, the plug is opened, limestone on the heat conduction baffle is pushed into the kiln body through the upper end of the blanking pipe to be fired, high-temperature flue gas generated in the kiln body flows into the bottom of the storage box through the smoke guide pipe in the firing process, the limestone on the upper part is preheated through the heat conduction baffle, and meanwhile, the flue gas contacts with active carbon in the middle of the box type isolation net to adsorb toxic and harmful substances inside, and the preheated limestone is thrown into the kiln body through the blanking pipe to be fired.

Further, draw-in grooves have been seted up along the axial direction of laying of kiln body at both ends about the base, slide lower extreme fixedly connected with splint, splint set up in the base outside, the base is with the kiln body steady rest of drum type subaerial, and the slide can follow kiln body back-and-forth movement through the vertical joint of splint and base left and right sides.

Further, splint subtend one end fixedly connected with fixture block, a plurality of pulleys are installed to the fixture block lower extreme, the fixture block with the pulley all set up in the draw-in groove is inboard, and splint form vertical locking through the joint of fixture block and draw-in groove, can't break away from the kiln body, and the rolling action that utilizes the pulley also reduces frictional force at the removal in-process, and it is more smooth and easy to remove.

Further, the material storage box is internally provided with a box type isolation net, the box type isolation net is arranged on the lower side of the heat conducting partition plate, active carbon adsorption materials are arranged in cavities of the box type isolation net, the bottom of the material storage box is of an arc-shaped structure, the arc-shaped inner wall of the material storage box plays a supporting role on the heat conducting partition plate, the box type isolation net is not stressed, a rectangular cavity is formed in the middle of the box type isolation net, and various adsorption materials can be conveniently stored.

Further, through holes corresponding longitudinally are formed in the inner side of the heat conducting partition plate and the inner side of the box-type isolation net, a feeding hole in the front end of the inner side of the end groove is formed in the upper end of the kiln body, the through holes are formed in the upper portion of the feeding hole, and when the sliding seat is located in the middle of the kiln body, the through holes correspond to the feeding hole vertically, so that a feeding channel of limestone is formed.

Further, the through hole with the feed port inboard is provided with the unloading pipe, unloading pipe upper end casts into enlarged end structure, the end cap is installed to unloading pipe upper end, and the end cap adopts threaded connection's form to assemble on the unloading pipe, and the enlarged structure of unloading pipe upper end makes it can not deviate from in the through hole, and in firing the in-process, the end cap closes the unloading pipe, prevents that the flue gas from escaping and leaking.

Further, the balancing stand is installed to the unloading pipe outer wall, the balancing stand level set up in kiln body upside, the handle is installed to balancing stand left side lower extreme, uses the hand to hold the handle and reciprocates, controls the balancing stand and drives unloading pipe and pass in and out in the feed port for the horizontal locking of control slide and kiln body.

(3) Advantageous effects

Compared with the prior art, the utility model has the beneficial effects that: the lime kiln high-temperature flue gas recycling device adopts the storage box which is directly connected with the smoke discharging channel of the kiln body through the smoke guiding pipe, so that the lime stone in the storage box can be preheated by utilizing the high-temperature flue gas generated when the lime kiln burns the lime stone, the flue gas energy is fully utilized, the thermal efficiency of equipment is improved, and the lime stone is subjected to preliminary thermal decomposition in advance; the box-type isolation net in the storage box, the active carbon in the isolation net and other filtering and adsorbing materials are utilized, so that harmful substances in high-temperature smoke can be absorbed, and the pollution of the smoke discharged to the environment after recycling is reduced.

Drawings

FIG. 1 is a schematic diagram of an assembly structure of an embodiment of a lime kiln high-temperature flue gas recycling device according to the present utility model;

FIG. 2 is a schematic diagram of a kiln body structure of an embodiment of a lime kiln high-temperature flue gas recycling device according to the utility model;

FIG. 3 is a schematic diagram of a slide seat structure of an embodiment of a lime kiln high-temperature flue gas recycling device according to the utility model;

fig. 4 is a schematic diagram of a storage box structure of an embodiment of a lime kiln high-temperature flue gas recycling device.

The marks in the drawings are: 1. a base; 2. a kiln body; 3. an end groove; 4. a smoke outlet; 5. a slide; 6. a base; 7. a connecting disc; 8. a storage box; 9. a smoke guide pipe; 10. a thermally conductive separator plate; 11. a clamping groove; 12. a clamping plate; 13. a clamping block; 14. a pulley; 15. a box-type isolation net; 16. a through hole; 17. a feed hole; 18. discharging pipes; 19. a plug; 20. a balancing stand; 21. a handle.

Detailed Description

This embodiment is a high temperature flue gas recycling device for lime kiln, and its package structure schematic diagram is shown as fig. 1, and kiln body 2 structure schematic diagram is shown as fig. 2, and slide 5 structure schematic diagram is shown as fig. 3, and storage box 8 structure schematic diagram is shown as fig. 4, this high temperature flue gas recycling device include base 1, install in kiln body 2 of base 1 upper end, set up in storage box 8 above kiln body 2, kiln body 2 upper end is provided with end tank 3, kiln body 2 upper end has been seted up and is in exhaust port 4 in the middle of the end tank 3, kiln body 2 outside is provided with slide 5, be provided with base 6 in the middle of the slide 5, base 6 set up in the end tank 3 is inboard, connecting disc 7 is installed to slide 5 upper end, connecting disc 7 with install smoke guide pipe 9 between storage box 8 lower extreme, heat conduction baffle 10 is installed to storage box 8 inboard.

For this embodiment, the storage box 8 is of a bottom arc structure, the upper end of the box is of a rectangular structure, the inner cavity is divided into an upper part and a lower part through the heat conducting partition board 10, the upper part is used for storing limestone raw materials, and in the preheating stage, the limestone is smashed and peeled into small blocks in a manual auxiliary vibrating mode, and the small blocks are waited for firing.

The kiln comprises a kiln body 2, a base 1, clamping grooves 11, clamping plates 12, clamping blocks 13, pulleys 14, friction force and a sliding seat 5, wherein the clamping grooves 11 are formed in the left end and the right end of the base 1 along the axial arrangement direction of the kiln body 2, the clamping plates 12 are fixedly connected with the lower ends of the sliding seats 5, the clamping plates 12 are arranged on the outer side of the base 1, the clamping blocks 13 are fixedly connected with one opposite end of each clamping plate 12, the lower ends of the clamping blocks 13 are provided with the pulleys 14, the clamping blocks 13 and the pulleys 14 are arranged on the inner sides of the clamping grooves 11, the base 1 stably supports the cylindrical kiln body 2 on the ground, the sliding seats 5 can move back and forth along the kiln body 2 through the clamping plates 12 and the vertical clamping grooves 11, the clamping plates 12 cannot be separated from the kiln body 2 through the clamping blocks 13, and the friction force is reduced through the rolling action of the pulleys 14 in the moving process.

Meanwhile, a box type isolation net 15 is arranged on the inner side of the storage box 8, the box type isolation net 15 is arranged on the lower side of the heat conducting partition plate 10, active carbon adsorption materials are arranged in a cavity of the box type isolation net 15, through holes 16 longitudinally corresponding to the inner side of the heat conducting partition plate 10 and the inner side of the box type isolation net 15 are formed in the inner side of the storage box, a feeding hole 17 at the front end of the inner side of the end groove 3 is formed in the upper end of the kiln body 2, the through holes 16 are arranged above the feeding hole 17, the bottom of the storage box 8 is of an arc-shaped structure, the arc-shaped inner wall of the arc-shaped structure plays a supporting role on the heat conducting partition plate 10, the box type isolation net 15 is not stressed, a rectangular cavity is formed in the middle of the box type isolation net 15, various adsorption materials are conveniently stored, and when the sliding seat 5 is positioned in the middle position of the kiln body 2, the through holes 16 and the feeding hole 17 are vertically corresponding to form a limestone feeding channel.

In addition, the through hole 16 and the inboard of feed port 17 are provided with unloading pipe 18, unloading pipe 18 upper end casts into enlarged end structure, blanking pipe 18 upper end installs end cap 19, unloading pipe 18 outer wall installs balancing stand 20, balancing stand 20 level set up in kiln body 2 upside, handle 21 is installed to balancing stand 20 left side lower extreme, and end cap 19 adopts threaded connection's form to assemble on unloading pipe 18, and the enlarged structure of unloading pipe 18 upper end makes it can not deviate from in the through hole 16, and in the firing process, end cap 19 closes unloading pipe 18, prevents that the flue gas from escaping, and the user holds handle 21 and reciprocates, and control balancing stand 20 drives unloading pipe 18 and passes in from feed port 17 for control slide 5 and the horizontal locking of kiln body 2.

When the lime kiln high-temperature flue gas recycling device adopting the technical scheme is used, a user moves the sliding seat 5 to the middle part of the kiln body 2, the smoke outlet 4 is aligned to the base 6, the smoke guide pipe 9 is communicated with the storage box 8, then the handle 21 is put down, the blanking pipe 18 falls into the feeding hole 17, the plug 19 is opened, limestone on the heat conduction baffle 10 is pushed into the kiln body 2 through the upper end of the blanking pipe 18 to be fired, in the firing process, high-temperature flue gas generated in the kiln body 2 flows into the bottom of the storage box 8 through the smoke guide pipe 9, the limestone on the upper part is preheated through the heat conduction baffle 10, meanwhile, the flue gas is contacted with active carbon in the middle of the box-type isolation net 15 to adsorb internal toxic and harmful substances, and the preheated limestone is put into the kiln body 2 through the blanking pipe 18 to be fired.

Claims

1. The high-temperature flue gas recycling device for the lime kiln comprises a base, a kiln body arranged at the upper end of the base and a storage box arranged above the kiln body; the kiln is characterized in that an end groove is formed in the upper end of the kiln body, a smoke outlet in the middle of the end groove is formed in the upper end of the kiln body, a sliding seat is arranged on the outer side of the kiln body, a base is arranged in the middle of the sliding seat, the base is arranged on the inner side of the end groove, a connecting disc is arranged at the upper end of the sliding seat, a smoke guide pipe is arranged between the connecting disc and the lower end of the storage box, and a heat conduction partition plate is arranged on the inner side of the storage box.

2. The lime kiln high-temperature flue gas recycling device according to claim 1, wherein clamping grooves are formed in the left end and the right end of the base along the axial arrangement direction of the kiln body, the lower end of the sliding seat is fixedly connected with a clamping plate, and the clamping plate is arranged on the outer side of the base.

3. The lime kiln high-temperature flue gas recycling device according to claim 2, wherein a clamping block is fixedly connected to one opposite end of the clamping plate, a plurality of pulleys are mounted at the lower end of the clamping block, and the clamping block and the pulleys are arranged on the inner side of the clamping groove.

4. The lime kiln high-temperature flue gas recycling device according to claim 1, wherein a box type isolation net is arranged on the inner side of the storage box, the box type isolation net is arranged on the lower side of the heat conducting partition plate, and an activated carbon adsorption material is arranged in a cavity of the box type isolation net.

5. The lime kiln high-temperature flue gas recycling device according to claim 4, wherein the inner side of the heat conducting partition plate and the inner side of the box type isolation net are respectively provided with a longitudinally corresponding through hole, the upper end of the kiln body is provided with a feeding hole positioned at the front end of the inner side of the end groove, and the through holes are arranged above the feeding hole.

6. The lime kiln high-temperature flue gas recycling device according to claim 5, wherein a blanking pipe is arranged at the inner sides of the through hole and the feeding hole, the upper end of the blanking pipe is cast into an enlarged end structure, and a plug is arranged at the upper end of the blanking pipe.

7. The lime kiln high-temperature flue gas recycling device according to claim 6, wherein a balancing frame is installed on the outer wall of the blanking pipe, the balancing frame is horizontally arranged on the upper side of the kiln body, and a handle is installed at the lower end of the left side of the balancing frame.