Heating coal cinder waste heat recovery device

Abstract

The utility model discloses a heating coal cinder waste heat recovery device, which relates to the technical field of waste heat recovery equipment, and comprises a furnace body, a plurality of circulating water pipes, a plurality of U-shaped water pipes and a plurality of protection pipes, the plurality of protection pipes are vertically arranged in the furnace body, and the upper ends and the lower ends of the protection pipes are respectively connected with the top and the bottom of the furnace body; mounting openings are formed in the positions, corresponding to the protection pipe, of the top and the bottom of the furnace body, the diameter of each mounting opening is larger than the inner diameter of the protection pipe and smaller than the outer diameter of the protection pipe, a plurality of through holes are evenly formed in the protection pipe, and the outer diameter of the circulating water pipe is smaller than the inner diameter of the protection pipe; the high-temperature-resistant, wear-resistant and heat-conducting protection pipes are arranged outside the circulating water pipes, abrasion caused by direct contact between slag and the circulating water pipes is avoided, safety is improved, the upper ends and the lower ends of the multiple circulating water pipes are detachably connected through the U-shaped connectors, and maintenance and replacement are convenient.

Description

TECHNICAL FIELD

[0001] The utility model relates to a waste heat recovery equipment technical field, concretely is a kind of heating coal cinder waste heat recovery device. BACKGROUND

[0002] At present, the circulating water cooling system is generally used in the industry to recover waste heat from high-temperature slag. The cooling medium (such as water or steam) flowing in the circulating water pipe exchanges heat with the slag, converting thermal energy into usable steam or hot water, which is then used for power generation, heating or process circulation.

[0003] For example, the publication number CN219797979U discloses a slag waste heat recovery and utilization mechanism, which includes a base, a support frame fixedly connected to the base, a recovery furnace fixedly connected to the support frame, and a U-shaped water guide pipe fixedly connected to the recovery furnace. The mechanism transfers the heat of the slag to the circulating water in the U-shaped water guide pipe to recover waste heat.

[0004] However, in the above-mentioned patent, the water guide pipe is directly in contact with the slag, which may cause wear and tear on the surface of the water guide pipe during the feeding and discharging processes. If not timely repaired, the circulating water may leak from the water guide pipe. Moreover, the water guide pipe in the above-mentioned patent is fixedly connected, which is not convenient for maintenance, repair and replacement. SUMMARY

[0005] To overcome the above-mentioned deficiencies of the prior art, the utility model provides a heating coal cinder waste heat recovery device. A high-temperature-resistant, wear-resistant and heat-conducting protective pipe is arranged outside the circulating water pipe to prevent the slag from directly contacting the circulating water pipe and causing wear and tear, thereby improving safety. Moreover, the upper and lower ends of the multiple circulating water pipes are detachably connected through U-shaped joints, which facilitates maintenance, repair and replacement.

[0006] To achieve the above-mentioned purposes, the utility model is implemented by the following technical solutions: a heating coal cinder waste heat recovery device includes a furnace body, multiple circulating water pipes, multiple U-shaped water pipes and multiple protective pipes. The multiple protective pipes are vertically arranged in the furnace body and connected to the top and bottom of the furnace body at the upper and lower ends, respectively. The top and bottom of the furnace body are provided with mounting ports at positions corresponding to the protective pipes. The diameter of the mounting port is greater than the inner diameter of the protective pipe and less than the outer diameter of the protective pipe. Multiple through holes are uniformly arranged on the protective pipe. The outer diameter of the circulating water pipe is less than the inner diameter of the protective pipe. The multiple circulating water pipes pass through the protective pipe and the mounting port, respectively. A gap is formed between the outer side wall of the circulating water pipe and the inner side wall of the protective pipe. The mounting port is sealed. The upper and lower ends of the multiple circulating water pipes are detachably connected through the multiple U-shaped water pipes. The multiple circulating water pipes and the multiple U-shaped water pipes are connected to form a circulating pipe. The protective pipe is made of a high-temperature-resistant, wear-resistant and heat-conductive material. The top of the furnace body is provided with a feeding port, and the bottom of the furnace body is provided with a discharging port. A plug valve is arranged on the discharging port. The furnace body is supported by support legs.

[0007] Preferably, the plurality of circulating water pipes and the plurality of protective pipes are arranged uniformly and in a row in the center of the furnace body, so that two material cavities are formed in the furnace body, and the feeding port and the discharging port are arranged on the two sides of the center of the furnace body.

[0008] Preferably, the upper end and the lower end of the protective pipe are respectively provided with a folded edge, and the folded edges are fixed to the top and the bottom of the furnace body by screws.

[0009] Preferably, the upper end and the lower end of the circulating water pipe are respectively provided with a first flange, and the two ends of the U-shaped water pipe are respectively provided with a second flange, and the first flange and the second flange are connected by bolts.

[0010] Preferably, the feeding port is provided with an openable or closable cover plate, and the side wall of the furnace body is provided with an exhaust port.

[0011] Preferably, the furnace body is provided with a heat preservation layer outside.

[0012] The utility model provides a kind of heating coal cinder waste heat recovery device, with following beneficial effects:

[0013] 1. The utility model sets up the protective pipe of high temperature resistance, wear resistance, heat conduction outside circulating water pipe, avoids that slag directly contacts with circulating water pipe and produces abrasion, improves security, and the upper end and lower end of multiple circulating water pipes are detachably connected by U-shaped water pipe, convenient maintenance and replacement;

[0014] 2. The utility model discloses that multiple circulating water pipes are arranged in a row in the center of furnace body, and slag is put in on both sides, so that circulating water pipe is wrapped, heating of circulating water is accelerated, and heat loss is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0015] Fig. 1 It is the front view sectional view of the utility model a kind of heating coal cinder waste heat recovery device;

[0016] Fig. 2 It is the left view sectional view of the utility model a kind of heating coal cinder waste heat recovery device;

[0017] Fig. 3 It is the overhead schematic view of the utility model circulating water pipe and protective pipe.

[0018] In the drawing: 1, discharging port; 2, plug-in plate valve; 3, furnace body; 4, material cavity; 5, circulating water pipe; 6, folded edge; 7, feeding port; 8, cover plate; 9, first flange; 10, U-shaped water pipe; 11, second flange; 12, exhaust port; 13, mounting port; 14, gap; 15, protective pipe; 16, through hole; 17, heat preservation layer; 18, support leg. DETAILED DESCRIPTION

[0019] Clearly and completely describe the technical scheme in the embodiments of the utility model with reference to the drawings in the embodiments of the utility model, obviously, the described embodiments are only some embodiments of the utility model, not all embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor belong to the scope of the utility model protection.

[0020] As Figs. 1-3 shown, a heating coal cinder waste heat recovery device, including furnace body 3, a plurality of circulating water pipes 5, a plurality of U-shaped water pipes 10 and a plurality of protection pipes 15, a plurality of protection pipes 15 are vertically arranged in the furnace body 3 and the upper end and the lower end are connected with the top and the bottom of the furnace body 3 respectively, the top and the bottom of the furnace body 3 and the position corresponding to the protection pipe 15 are provided with mounting port 13, the diameter of the mounting port 13 is greater than the inner diameter of the protection pipe 15 and less than the outer diameter of the protection pipe 15, a plurality of through holes 16 are uniformly arranged on the protection pipe 15, the outer diameter of the circulating water pipe 5 is less than the inner diameter of the protection pipe 15, a plurality of circulating water pipes 5 are respectively penetrated through the protection pipe 15 and the mounting port 13, the gap 14 is formed between the outer side wall of the circulating water pipe 5 and the inner side wall of the protection pipe 15, the mounting port 13 is sealed, the upper end and the lower end of the plurality of circulating water pipes 5 are detachably connected through a plurality of U-shaped water pipes 10, the plurality of circulating water pipes 5 and the plurality of U-shaped water pipes 10 are communicated to form a circulating pipeline, the protection pipe 15 is made of high-temperature-resistant, wear-resistant and heat-conducting material, the top of the furnace body 3 is provided with a feeding port 7, the bottom of the furnace body 3 is provided with a discharging port 1, the discharging port 1 is provided with a plug valve 2, the furnace body 3 is supported by supporting legs 18; the plurality of circulating water pipes 5 and the plurality of protection pipes 15 are uniformly and arranged in rows in the center of the furnace body 3, so that two left and right material cavities 4 are formed in the furnace body 3, the feeding port 7 and the discharging port 1 are arranged on the two sides of the center of the furnace body 3 respectively; the upper end and the lower end of the protection pipe 15 are respectively provided with a folded edge 6, and the folded edge 6 is fixed with the top and the bottom of the furnace body 3 through screws; the upper end and the lower end of the circulating water pipe 5 are respectively provided with a first flange 9, the two ends of the U-shaped water pipe 10 are respectively provided with a second flange 11, and the first flange 9 and the second flange 11 are connected through bolts; the feeding port 7 is provided with a cover plate 8 that can be opened or closed, and the sidewall top of the furnace body 3 is provided with an exhaust port 12; the furnace body 3 is provided with a heat preservation layer 17 outside.

[0021] The detailed connection means is a known technology in the art, and the working principle and process are mainly introduced as follows:

[0022] According to the drawings attached Figs. 1-3As can be seen, during operation, heating coal ash is fed into the furnace body 3 through the feed inlet 7, directly contacting the protective pipe 15. The protective pipe 15 is made of a high-temperature resistant, wear-resistant, and thermally conductive material, such as tungsten carbide hard alloy. Since the circulating water pipe 5 passes through the protective pipe 15, and the installation port 13 is sealed, and the protective pipe 15 has a through hole 16, small particles of coal ash can pass through and enter the gap 14 between the circulating water pipe 5 and the protective pipe 15. On the one hand, the small particle size minimizes wear on the water pipe during feeding and discharging; on the other hand, it creates a solid-state heat conduction effect between the coal ash, the protective pipe 15, the coal ash, and the circulating water pipe 5, resulting in better heat transfer. During installation, the upper and lower ends of the circulating water pipe 5 are detachably connected to the U-shaped water pipe 10, and multiple circulating water pipes 5 and multiple U-shaped water pipes 10 are connected to form a single circulating pipeline. The heat from the heating coal ash is carried away by the circulating water in the circulating water pipe 5 for recycling. Finally, the slag is discharged from outlet 1, controlled by slide valve 2. This invention features a high-temperature resistant, wear-resistant, and thermally conductive protective pipe 15 outside the circulating water pipe 5 to prevent direct contact between the slag and the circulating water pipe 5, thus improving safety. Furthermore, the upper and lower ends of multiple circulating water pipes 5 are detachably connected via U-shaped water pipes 10, facilitating maintenance and replacement. It should be noted that while this invention does not achieve the same heat conduction efficiency as existing technologies where slag directly contacts the circulating water pipe 5, it significantly enhances operational safety. If the circulating water pipe 5 leaks, the large amount of water contacting the slag will instantly generate a large amount of steam, potentially leading to an explosion and the production of harmful gases. Therefore, for safety reasons, the design of this invention is more suitable for widespread use.

[0023] Multiple circulating water pipes 5 and multiple protective pipes 15 are evenly and in rows arranged in the center of the furnace body 3, forming two material chambers 4 on the left and right sides inside the furnace body 3. The inlet 7 and outlet 1 are respectively located on both sides of the center of the furnace body 3. Slag is put into the sides, so that the circulating water pipes 5 are wrapped, which accelerates the heating of the circulating water and reduces heat loss.

[0024] The protective tube 15 has folded edges 6 at its upper and lower ends, which are fixed to the top and bottom of the furnace body 3 by screws to ensure the stability of the protective tube 15 during use and to allow for removal and replacement.

[0025] The circulating water pipe 5 is equipped with a first flange 9 at its upper and lower ends, and the U-shaped water pipe 10 is equipped with a second flange 11 at both ends. The first flange 9 and the second flange 11 are connected by bolts, which is a simple connection method and is convenient for installation and disassembly.

[0026] The feed inlet 7 is equipped with a cover plate 8 that can be opened or closed, and the top of the side wall of the furnace body 3 is equipped with an exhaust port 12, which is connected to an external waste gas treatment system to avoid air pollution.

[0027] The furnace body 3 is equipped with an insulation layer 17 on the outside to reduce heat loss.

[0028] In this utility model, the circulating water pipe 5, the furnace body 3, and the screws and other components used for connection are all made of high temperature resistant and wear resistant materials; the U-shaped water pipe 10 can be fixed to the furnace body 3 or the outside using existing clamps and other components to further ensure stability. Those skilled in the art can understand the above design.

[0029] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A heating coal cinder waste heat recovery device, characterized by, The utility model provides a kind of furnace body (3), multiple circulating water pipes (5), multiple U-shaped water pipes (10) and multiple protective tubes (15), multiple protective tubes (15) are vertically arranged in furnace body (3) and upper end and lower end are connected with furnace body (3) top and bottom respectively, the furnace body (3) top and bottom and the position corresponding protective tube (15) are provided with mounting port (13), the diameter of mounting port (13) is greater than the inner diameter of protective tube (15) and less than the outer diameter of protective tube (15), multiple through holes (16) are uniformly provided on the protective tube (15), the outer diameter of circulating water pipe (5) is less than the inner diameter of protective tube (15), multiple circulating water pipes (5) are respectively penetrated in protective tube (15) and mounting port (13), and the gap (14) between the outer side wall of circulating water pipe (5) and the inner side wall of protective tube (15) is formed, the mounting port (13) is sealed, and the upper end and lower end of multiple circulating water pipes (5) are respectively connected by multiple U-shaped water pipes (10) detachably, multiple circulating water pipes (5) and multiple U-shaped water pipes (10) are communicated into a circulating pipeline, the protective tube (15) uses high-temperature-resistant, wear-resistant, heat-conducting material, the furnace body (3) top is provided with feeding port (7), and furnace body (3) bottom is provided with discharge port (1), the discharge port (1) is provided with plug valve (2), and the furnace body (3) is supported by support leg (18).

2. A heating coal cinder waste heat recovery device according to claim 1, characterized in that, Multiple circulating water pipes (5) and multiple protective tubes (15) are evenly and arranged in rows in the center of furnace body (3), so that left and right two material cavities (4) are formed in furnace body (3), and the feeding port (7) and the discharge port (1) are arranged on the two sides of the center of the furnace body (3) respectively.

3. The device according to claim 1, wherein The upper end and the lower end of the protective tube (15) are respectively provided with a folded edge (6), and the folded edge (6) is fixed to the top and the bottom of the furnace body (3) by screws.

4. The device according to claim 1, wherein The upper end and the lower end of the circulating water pipe (5) are respectively provided with a first flange (9), and the two ends of the U-shaped water pipe (10) are respectively provided with a second flange (11), and the first flange (9) and the second flange (11) are connected by bolts.

5. The device for recovering waste heat from a heating cinder according to claim 1, wherein The feeding port (7) is provided with a cover plate (8) that can be opened or closed, and the side wall of the furnace body (3) is provided with an exhaust port (12) at the top.

6. The device for recovering waste heat from a heating cinder according to claim 1, wherein The furnace body (3) is provided with a heat preservation layer (17) outside.

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