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CN-224230734-U - Heat recycling device of rotary kiln

CN224230734UCN 224230734 UCN224230734 UCN 224230734UCN-224230734-U

Abstract

The utility model discloses a heat recycling device of a rotary kiln, which relates to the technical field of heat recycling of rotary kilns and comprises a first heat exchange box, wherein a first heat exchange component is arranged in the first heat exchange box, a steam generator is arranged on one side of the first heat exchange box, a second heat exchange component is arranged in the steam generator, a second heat exchange box is arranged on one side of the steam generator, a material conveying box is arranged at the top end of the second heat exchange box, and a third heat exchange component is arranged in the second heat exchange box. According to the utility model, the heat of the waste gas is recycled in a multi-level manner, so that the energy consumption of the production of the rotary kiln is reduced, the electric quantity and the warm water can be provided for the interior of the rotary kiln, the life of staff in the rotary kiln factory can be improved, the heat of the waste gas is fully utilized, the heat recovery efficiency is greatly improved compared with the prior art, and the rotary kiln is more energy-saving and environment-friendly.

Inventors

  • GAO DONGYANG
  • LI GUANJUN
  • QU SHAOFENG

Assignees

  • 郑州东红耐火材料有限公司

Dates

Publication Date
20260512
Application Date
20250722

Claims (6)

  1. 1. The heat recycling device of the rotary kiln comprises a first heat exchange box (2) and is characterized in that a first heat exchange component is arranged in the first heat exchange box (2), a steam generator (9) is arranged on one side of the first heat exchange box (2), a second heat exchange component is arranged in the steam generator (9), a second heat exchange box (14) is arranged on one side of the steam generator (9), a feed box (11) is arranged at the top end of the second heat exchange box (14), and a third heat exchange component is arranged in the second heat exchange box (14); The first heat exchange assembly comprises a first exhaust pipe (3), the first exhaust pipe (3) is arranged in the first heat exchange box (2), the input end of the first exhaust pipe (3) extends to the outer side of the first heat exchange box (2) and is provided with a gas pipe (4), and the output end of the first exhaust pipe (3) extends to the outer side of the first heat exchange box (2); The second heat exchange assembly comprises a second exhaust pipe (7), the second exhaust pipe (7) is arranged in the steam generator (9), the input end of the second exhaust pipe (7) is connected with the output end of the first exhaust pipe (3), and the output end of the second exhaust pipe (7) extends to the outer side of the steam generator (9); One side of the feeding box (11) is provided with an air inlet, the air inlet of the feeding box (11) is connected with the output end of the second waste gas pipe (7), the other side of the feeding box (11) is provided with an air outlet, the air outlet of the feeding box (11) is provided with an air duct (12), and the air duct (12) is communicated with the air inlet end of the second heat exchange box (14).
  2. 2. The heat recycling device of the rotary kiln is characterized in that the first heat exchange assembly further comprises a cold air pipe (1), the cold air pipe (1) is arranged on one side of the top end of the first heat exchange box (2), the other side of the top end of the first heat exchange box (2) is provided with a return air pipe (6), a plurality of first heat exchange plates (5) are fixed on the outer wall of a first exhaust pipe (3) in the first heat exchange box (2), the first heat exchange plates (5) are distributed in the first heat exchange box (2) in a vertically staggered mode, the front end and the rear end of each first heat exchange plate (5) are welded with the inner wall of the first heat exchange box (2), and the top end or the bottom end of each first heat exchange plate (5) is welded with the top end or the bottom end of the first heat exchange box (2).
  3. 3. The heat recycling device of the rotary kiln, as set forth in claim 1, characterized in that the second heat exchange assembly further comprises a water supply valve pipe (8), the water supply valve pipe (8) is installed on one side of the top end of the steam generator (9), and a steam exhaust pipe (10) is installed on the other side of the top end of the steam generator (9).
  4. 4. The heat recycling device of the rotary kiln is characterized in that the third heat exchange assembly comprises a water conveying pipe (15) in an S-shaped design, the water conveying pipe (15) is arranged in the second heat exchange box (14), two ends of the water conveying pipe (15) extend to the outer side of the second heat exchange box (14), a plurality of second heat exchange plates (16) are fixed on the outer wall of the water conveying pipe (15), and a discharge pipe (13) is arranged on one side of the second heat exchange box (14).
  5. 5. The heat recycling device of the rotary kiln according to claim 1, wherein the first exhaust pipe (3) and the second exhaust pipe (7) are of an S-shaped design, and the first exhaust pipe (3) and the second exhaust pipe (7) are made of high-temperature resistant alloy pipes.
  6. 6. The heat recycling device of the rotary kiln of claim 1, wherein the air inlet and the air outlet of the feeding box (11) are positioned at the same height, and the horizontal distance between the air inlet and the air outlet of the feeding box (11) is slightly smaller than the length of the feeding box (11).

Description

Heat recycling device of rotary kiln Technical Field The utility model relates to the technical field of heat recovery of rotary kilns, in particular to a heat recovery and utilization device of a rotary kiln. Background Rotary kilns are a common industrial equipment mainly used for high temperature treatment and conversion of materials. It is a long cylindrical container, usually horizontally placed and mounted at an incline. The material enters the rotary kiln from one port, then gradually moves in the rotary kiln along the axial direction, finally is discharged from the other port, and the working principle of the rotary kiln is based on the heat treatment and conversion process of the material at high temperature. By heating the materials in the rotary kiln, different treatment effects such as drying, calcining, roasting, burning, smelting, gasifying and the like can be realized, and the rotary kiln has wider application in industries such as building materials, metallurgy, chemical industry and the like. When the rotary kiln is used, waste gas is generated, the temperature of the waste gas is very high, and if the waste gas is not reused, the waste of resources is caused, so that waste heat recovery equipment for recycling the heat of the rotary kiln also exists in the prior art; However, most of the related devices in the prior art only utilize heat more singly, but only a part of the heat of the exhaust gas is utilized when the heat of the exhaust gas is high, so that the heat of the exhaust gas is utilized incompletely, and the utilization rate is very low, but a large amount of heat is not utilized, so that the problems are thoroughly studied. Disclosure of utility model The utility model aims to provide a heat recycling device of a rotary kiln, which aims to solve the problem that the recycling rate of heat generated by the rotary kiln is not high in the background technology. The heat recycling device of the rotary kiln comprises a first heat exchange box, wherein a first heat exchange assembly is arranged in the first heat exchange box, a steam generator is arranged on one side of the first heat exchange box, a second heat exchange assembly is arranged in the steam generator, a second heat exchange box is arranged on one side of the steam generator, a feeding box is arranged at the top end of the second heat exchange box, and a third heat exchange assembly is arranged in the second heat exchange box; The first heat exchange assembly comprises a first exhaust pipe, the first exhaust pipe is arranged in the first heat exchange box, the input end of the first exhaust pipe extends to the outer side of the first heat exchange box and is provided with a gas pipe, and the output end of the first exhaust pipe extends to the outer side of the first heat exchange box; The second heat exchange assembly comprises a second exhaust pipe, the second exhaust pipe is arranged in the steam generator, the input end of the second exhaust pipe is connected with the output end of the first exhaust pipe, and the output end of the second exhaust pipe extends to the outer side of the steam generator; One side of the feed box is provided with an air inlet, the air inlet of the feed box is connected with the output end of the second exhaust gas pipe, the other side of the feed box is provided with an air outlet, the air outlet of the feed box is provided with an air duct, and the air duct is communicated with the air inlet end of the second heat exchange box. Preferably, the first heat exchange assembly further comprises a cold air pipe, the cold air pipe is arranged on one side of the top end of the first heat exchange box, the air return pipe is arranged on the other side of the top end of the first heat exchange box, a plurality of first heat exchange plates are fixed on the outer wall of the first exhaust pipe inside the first heat exchange box, the first heat exchange plates are distributed in a vertically staggered mode inside the first heat exchange box, the front end and the rear end of each first heat exchange plate are welded with the inner wall of the first heat exchange box, and the top end or the bottom end of each first heat exchange plate is welded with the top end or the bottom end of the first heat exchange box. Preferably, the second heat exchange assembly further comprises a water supply valve pipe, wherein the water supply valve pipe is arranged on one side of the top end of the steam generator, and a steam calandria is arranged on the other side of the top end of the steam generator. Preferably, the third heat exchange assembly comprises a water pipe which is in an S-shaped design, the water pipe is arranged in the second heat exchange box, two ends of the water pipe extend to the outer side of the second heat exchange box, a plurality of second heat exchange plates are fixed on the outer wall of the water pipe, and a discharge pipe is arranged on one side of the second heat exchange box. Preferably,