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CN-224215857-U - Metallurgical slag heat exchange module and heat exchange system

CN224215857UCN 224215857 UCN224215857 UCN 224215857UCN-224215857-U

Abstract

A metallurgical slag heat exchange module comprises a plurality of parallel boiler tubes arranged at intervals, a plurality of membrane tube rows formed by connecting a plurality of boiler tubes which are linearly arranged, a rectangular box body structure formed by enclosing two adjacent membrane tube rows by connecting a connecting plate, wherein a closed or semi-closed heat exchange space is arranged in the middle of the rectangular box body structure, one end of the heat exchange space is a feed inlet, the other end of the heat exchange space is a discharge outlet and is arranged from top to bottom, so that metallurgical slag descends under the gravity, and communicating tubes are arranged between the adjacent boiler tubes to communicate the boiler tubes with each other. The membrane type tube bank arrangement ensures that metallurgical slag is naturally turned in the descending process, an additional power system is not needed, the energy consumption is reduced, and the turning uniformity and efficiency are improved. The boiler tube is used as a main heat exchange component, cooling water circularly flows through the communicating tube, and heat is transferred by contacting with the outer wall of the boiler tube when the high-temperature metallurgical slag descends, so that efficient heat exchange is realized. The membrane tube bank design increases heat exchange area, improves heat exchange efficiency, and adopts the cooling water cyclic utilization mode, reduces water resource consumption.

Inventors

  • WU WENBIN
  • YU YUEFEI
  • YANG BO
  • ZHAO AIXIN
  • XIE CONGYU

Assignees

  • 广西顺港资源环保科技有限责任公司

Dates

Publication Date
20260508
Application Date
20250515
Priority Date
20250427

Claims (10)

  1. 1. A metallurgical slag heat exchange module, comprising: a plurality of boiler tubes (1), wherein the boiler tubes (1) are arranged in parallel and at intervals; The welding plates (2) are respectively connected with a plurality of boiler tubes (1) which are linearly arranged to form a plurality of membrane tube rows (4); The connecting plates (3) are connected between two adjacent membrane type tube rows (4) to form a rectangular box body structure (5) in a surrounding mode, a closed or semi-closed heat exchange space (51) is arranged in the center of the rectangular box body structure (5), one end of the heat exchange space (51) is a feed inlet (52), the other end of the heat exchange space is a discharge outlet (53), and the feed inlet (52) and the discharge outlet (53) of the heat exchange space (51) are arranged from top to bottom so that metallurgical slag in the heat exchange space (51) descends under the gravity of the metallurgical slag; And the communicating pipes (6) are arranged between the adjacent boiler tubes (1) and are used for communicating the boiler tubes (1) with each other.
  2. 2. A metallurgical slag heat exchange module according to claim 1, characterized in that the arrangement between the membrane tube rows (4) is horizontal and/or vertical.
  3. 3. A metallurgical slag heat exchange module according to claim 1, wherein the rectangular box structure (5) has a length, width and height in the range 1m-5m.
  4. 4. A metallurgical slag heat exchange module according to claim 1, characterized in that the rectangular box structure (5) is provided with heat radiating fins (7) on the side facing the heat exchange space (51).
  5. 5. A metallurgical slag heat exchange module according to claim 4, wherein the height of the heat radiating fins (7) is smaller than the height of the boiler tubes (1).
  6. 6. A metallurgical slag heat exchange module according to claim 1, wherein the spacing between two adjacent boiler tubes (1) in the membrane tube array (4) is 100mm-500mm.
  7. 7. A metallurgical slag heat exchange module according to claim 1, wherein the communication pipes (6) are arranged between every two adjacent boiler tubes (1), and every two adjacent communication pipes (6) are staggered so as to form a serpentine flow path in the membrane tube array (4).
  8. 8. A metallurgical slag heat exchange module according to any one of claims 1-7, wherein the surface of the rectangular box structure (5) facing the heat exchange space (51) is further provided with a composite layer comprising a bottom chromium coating and a top silicon carbide coating, wherein the silicon carbide coating has a thickness of 0.5-3 mm.
  9. 9. A metallurgical slag heat exchange system, characterized by comprising at least two metallurgical slag heat exchange modules according to any one of claims 1-8, wherein the surface of the rectangular box structure (5) of at least one of said metallurgical slag heat recovery heat exchange modules is provided with a composite layer, and each two metallurgical slag heat recovery heat exchange modules are vertically assembled and fixed to each other so that the heat exchange space (51) is coherent and sealed, and the welding plates (2) between each two metallurgical slag heat recovery heat exchange modules are arranged in a staggered manner.
  10. 10. The metallurgical slag heat exchange system according to claim 9, further comprising a support frame (8), wherein the support frame (8) is wrapped outside at least two metallurgical slag waste heat recovery heat exchange modules, the support frame (8) comprises a total discharge port (81), a total feed port (82), a total water inlet (83) and a total water outlet (84), the total discharge port (81) is located at the bottom end of the support frame (8), the total feed port (82) is located at the top end of the support frame (8), the total water inlet (83) is located at the lower end of the side wall of the support frame (8), and the total water outlet (84) is located at the upper end of the side wall of the support frame (8).

Description

Metallurgical slag heat exchange module and heat exchange system Technical Field The utility model relates to the technical field of metallurgical slag treatment, in particular to a metallurgical slag heat exchange module and a metallurgical slag heat exchange system. Background With the rapid development of the metallurgical industry, the treatment and utilization of metallurgical slag is the focus of industry attention. At present, the main stream technology of domestic metallurgical slag treatment is to crush high-temperature metallurgical slag by adopting a rolling crushing system and cool the high-temperature metallurgical slag from a high-temperature state (about 1600 ℃) to normal temperature by a water cooling mode. However, this conventional process has a number of drawbacks: Firstly, the rolling crushing system needs a power system to provide autorotation force for the rolling crushing system so as to realize automatic material turning effect. This process requires a great consumption of kinetic energy, resulting in a great consumption of energy. In addition, because the material turning process is not efficient enough, extra power equipment is possibly needed for assistance, the energy consumption is further increased, a large amount of heat energy is contained in the high Wen Ye gold slag, and the heat quantity contained in the high Wen Ye gold slag at 1500-1600 ℃ is equivalent to 50-60 kg of standard coal. However, cooling by only the crushing system consumes a large amount of water resources and the heat exchange efficiency is low, resulting in waste of these valuable heat energy. In the process of water cooling, a large amount of water resources are evaporated or taken away, so that the water resources cannot be effectively utilized, and great waste is caused. Disclosure of utility model The utility model aims to disclose a novel slag cooler structure, which can realize automatic material turning, and simultaneously, the cooling speed is increased and the production efficiency is improved by radiating through a plurality of boiler tubes. In order to achieve the aim, the utility model discloses a metallurgical slag heat exchange module which comprises a plurality of boiler tubes, welding plates, connecting plates and communicating pipes, wherein the boiler tubes are arranged in parallel and at intervals, the welding plates are respectively connected with the boiler tubes in a linear arrangement mode to form a plurality of membrane type tube rows, the connecting plates are connected between two adjacent membrane type tube rows to form a rectangular box body structure in a surrounding mode, a closed or semi-closed heat exchange space is arranged in the center of the rectangular box body structure, one end of the heat exchange space is a feed inlet, the other end of the heat exchange space is a discharge outlet, the feed inlet and the discharge outlet of the heat exchange space are arranged from top to bottom, so that metallurgical slag in the heat exchange space descends under the gravity of the metallurgical slag, and the communicating pipes are arranged between the adjacent boiler tubes and are used for communicating the boiler tubes with each other. Through adopting above-mentioned scheme, through optimizing boiler tube and diaphragm type bank of tubes's arrangement to and the structural design in heat transfer space for metallurgical sediment can turn in the decline in-process naturally, need not extra driving system, not only reduced the energy consumption, still improved homogeneity and the efficiency of turning over the material. The boiler tube is used as a main part of heat exchange, and circulation flow of cooling water is realized through the communicating pipe. The high-temperature metallurgical slag contacts with the outer wall of the boiler tube in the descending process, and heat is transferred to cooling water, so that efficient heat exchange is realized. Meanwhile, the design of the membrane tube bank increases the heat exchange area and further improves the heat exchange efficiency. Compared with the traditional water cooling mode, the utility model adopts a mode of recycling cooling water, thereby greatly reducing the consumption of water resources. The cooling water circularly flows in the boiler tube to continuously absorb the heat of the metallurgical slag, and then is cooled by an external cooling system and then recycled or directly used for heating. Further, the arrangement mode between the membrane type tube rows is horizontal arrangement and/or vertical arrangement. Through adopting above-mentioned scheme, the level is arranged and is arranged perpendicularly and combine, improves heat exchange efficiency. Further, the length, width and height ranges of the rectangular box body structure are 1m-5m. By adopting the scheme, the metallurgical slag treatment capacity of different scales is adapted, and the residence time of the metallurgical slag in the heat exchange space