CN-224212567-U - Device suitable for waste heat recycling mud stoving of iron and steel plant

Abstract

The utility model relates to the technical field of sludge drying in steel works and discloses a device suitable for drying waste heat recycling sludge in steel works, which comprises a support, wherein a storage box is fixedly connected to the top of the support, a drying assembly is arranged on the top of the support, the drying assembly comprises a conveying pipe, the bottom of the conveying pipe is fixedly connected to the top of the support, a low-temperature belt dryer is arranged on the outer wall of the support, a spiral pipe is rotatably connected inside the conveying pipe, and a discharge port is formed in the bottom of the conveying pipe. According to the utility model, sludge is placed in a buffer bin through a loading vehicle and conveyed to a low-temperature belt type drier through a screw and a scraper, the sludge is dried by heating the net belt to 80 ℃ through 150 ℃ hot air generated by tail gas of an air cooling section of an annealing furnace, the wet hot air is discharged after dust removal through a spray tower, and the dried sludge is conveyed by multiple stages of screws, so that the problems of waste heat waste and high sludge treatment cost are solved, and the energy utilization efficiency and the environmental protection property are improved.

Inventors

• LI FENGJUAN
• FENG XIAOTING
• LIANG WENYI
• HUANG XIAORONG

Assignees

• 阳江职业技术学院

Dates

Publication Date

20260508

Application Date

20250514

Claims (7)

1. 1. The device for drying the sludge by using the waste heat recycling in the iron and steel plant comprises a bracket (1) and is characterized in that a storage box (7) is fixedly connected to the top of the bracket (1), and a drying assembly is arranged on the top of the bracket (1); Drying component includes transportation pipe (8), transportation pipe (8) bottom fixed connection is in support (1) top, support (1) outer wall is provided with low temperature area formula desiccator (2), transportation pipe (8) inside rotation is connected with spiral pipe (9), bin outlet (10) have been seted up to transportation pipe (8) bottom, low temperature area formula desiccator (2) inside rotation is connected with transportation area (6), transportation area (6) top sets up bin outlet (10) bottom, low temperature area formula desiccator (2) top fixedly connected with connecting pipe (5), connecting pipe (5) inside is provided with adjusting part, low temperature area formula desiccator (2) top fixedly connected with draught fan (4), low temperature area formula desiccator (2) opposite side fixedly connected with discharge pipe (3).
2. 2. The device for drying waste heat recycling sludge, which is applicable to steel plants, as claimed in claim 1, is characterized in that the adjusting assembly comprises a sealing plug (11), and the outer wall of the sealing plug (11) is slidingly connected inside the connecting pipe (5).
3. 3. The device for drying the waste heat recycling sludge, which is applicable to the steel plant, according to claim 2, is characterized in that an air inlet (18) is formed in the connecting pipe (5), and the outer wall of the sealing plug (11) is slidably connected in the air inlet (18).
4. 4. The device for drying the waste heat recycling sludge, which is applicable to the steel plant, according to claim 3, is characterized in that a connecting block (12) is fixedly connected inside the connecting pipe (5), and a fixed shell (13) is fixedly connected to the other side of the connecting block (12).
5. 5. The device for drying sludge by recycling waste heat, which is applicable to steel plants, according to claim 4, wherein the inside of the fixed shell (13) is provided with a lifting groove (17), and the inside of the fixed shell (13) is connected with a connecting column (14) in a sliding manner.
6. 6. The device for drying sludge by utilizing waste heat, which is applicable to steel plants, according to claim 5, wherein the bottom of the connecting column (14) is fixedly connected to the top of the sealing plug (11), and the top of the connecting column (14) is fixedly connected with a pressing disc (15).
7. 7. The device for drying sludge by utilizing waste heat, which is applicable to a steel plant, according to claim 6, is characterized in that the outer wall of the pressing disc (15) is slidably connected inside the lifting groove (17), a spring (16) is sleeved on the outer wall of the connecting column (14), the top of the spring (16) is fixedly connected to the bottom of the pressing disc (15), and the bottom of the spring (16) is fixedly connected to the inner wall of the fixed shell (13).

Description

Device suitable for waste heat recycling mud stoving of iron and steel plant Technical Field The utility model relates to the technical field of sludge drying in steel plants, in particular to a device for drying waste heat recycling sludge in steel plants. Background In the steel industry production process, the efficient utilization of energy and the reasonable disposal of wastes are always focuses on industry, when an annealing furnace of a steel plant operates, the temperature of tail gas of an air cooling section is up to more than 150 ℃, and the tail gas containing a large amount of heat energy is directly discharged into the atmosphere without being effectively utilized, so that serious waste of energy is caused, and heat pollution is also caused to the environment. At present, in the aspect of sludge drying treatment, a gas rotary kiln is generally adopted as main equipment in a steel plant, the technical principle of the gas rotary kiln is that high temperature is generated by burning gas, high-temperature flue gas is utilized to carry out heat exchange with sludge, evaporation removal of moisture in the sludge is realized, in the actual operation process, the sludge enters from one end of the rotary kiln, along with rotation of the rotary kiln, the sludge continuously rolls in a cylinder body and fully contacts with the high-temperature flue gas, the drying process is gradually completed, the traditional drying mode depends on a large amount of gas consumption, heat energy is obtained by consuming fossil energy, the operation cost is high, and the utilization mode of the energy is single, so that potential waste heat resources in the steel plant can not be fully excavated. However, the existing sludge drying treatment mode has obvious defects that on one hand, a great amount of waste heat of tail gas of an air cooling section of an annealing furnace is wasted, the precious heat cannot be recycled, so that energy is idle and lost, on the other hand, sludge drying equipment mainly comprising a gas rotary kiln is dependent on gas for a long time as energy, the production cost of a steel plant is greatly increased, and the environment is polluted by the exhaust emission generated by burning the gas. Disclosure of utility model The utility model aims to provide a waste heat recycling sludge drying device suitable for a steel plant, and aims to solve the problems of waste heat waste and high sludge treatment cost in the prior art. The technical scheme of the utility model is realized in that the waste heat recycling sludge drying device suitable for the steel plant comprises a bracket, wherein the top of the bracket is fixedly connected with a storage box, and the top of the bracket is provided with a drying component; The drying assembly comprises a conveying pipe, the bottom of the conveying pipe is fixedly connected with the top of the support, the outer wall of the support is provided with a low-temperature belt type drier, a spiral pipe is connected to the inside of the conveying pipe in a rotating mode, a discharge port is formed in the bottom of the conveying pipe, a conveying belt is connected to the inside of the low-temperature belt type drier in a rotating mode, the top of the conveying belt is arranged at the bottom of the discharge port, a connecting pipe is fixedly connected to the top of the low-temperature belt type drier, an adjusting assembly is arranged inside the connecting pipe, an induced draft fan is fixedly connected to the top of the low-temperature belt type drier, and a discharge pipe is fixedly connected to the other side of the low-temperature belt type drier. Optionally, the adjusting assembly comprises a sealing plug, and the outer wall of the sealing plug is slidingly connected inside the connecting pipe. Optionally, an air inlet is formed in the connecting pipe, and the outer wall of the airtight plug is slidably connected in the air inlet. Optionally, the connecting pipe is inside fixedly connected with connecting block, connecting block opposite side fixedly connected with fixed shell. Optionally, the fixed shell is inside to be seted up the lift groove, the inside sliding connection of fixed shell has the spliced pole. Optionally, the spliced pole bottom fixed connection is in airtight stopper top, spliced pole top fixedly connected with presses the disc. Optionally, press disc outer wall sliding connection is in inside the lift groove, spliced pole outer wall cover is equipped with the spring, spring top fixed connection is in press disc bottom, spring bottom fixed connection is in fixed shell inner wall. 1. According to the utility model, sludge is placed in a buffer bin through a loading vehicle and conveyed to a low-temperature belt type drier through a screw and a scraper, the sludge is dried by heating the net belt to 80 ℃ through 150 ℃ hot air generated by tail gas of an air cooling section of an annealing furnace, the wet hot air is discharged after dust remov