Submerged arc furnace waste heat secondary recovery device

Abstract

The utility model relates to the technical field of submerged arc furnaces, discloses a secondary waste heat recovery device for a submerged arc furnace, and solves the problems that resources are wasted and the environment is polluted due to the fact that flue gas generated after high-temperature incineration of an existing submerged arc furnace is not secondarily utilized. Comprising a combustion furnace and a conveying water pipe fixedly connected to the upper end of the combustion furnace, a water supply pipe is arranged at the end, away from the combustion furnace, of the conveying water pipe, a water-cooled flue is fixedly connected to the upper end of the combustion furnace, and a waste heat utilization assembly is fixedly connected to the lower end of the water-cooled flue; the waste heat utilization assembly comprises a second smoke exhaust pipe and a drawing box movably connected to the lower end of the second smoke exhaust pipe, a water storage box is fixedly connected to one side of the second smoke exhaust pipe, a heat conduction pipe is arranged in the water storage box, one end of the heat conduction pipe is fixedly connected with the second smoke exhaust pipe, smoke enters the second smoke exhaust pipe through a second smoke exhaust groove, and smoke heat heats water in the water storage box through the heat conduction pipe; the secondary utilization of flue gas is realized, and the environmental pollution is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of submerged arc furnaces, in particular to a secondary recovery device for waste heat from submerged arc furnaces. Background Art

[0002] Submerged arc furnace is also called arc furnace or resistance furnace. It is mainly used for reducing smelting ore, carbonaceous reducing agent and solvent and other raw materials. It mainly produces ferrosilicon, ferromanganese, ferrochrome, ferrotungsten, silicon-manganese alloy and other ferroalloys, which are important industrial raw materials in the metallurgical industry and chemical raw materials such as calcium carbide. The transformer of the submerged arc furnace has a continuous and stable load, low impedance voltage, more voltage regulation levels, small level difference and strong overload capacity. It can be divided into two types: load and no excitation voltage regulation. Generally, the first few levels have constant capacity output, and the last few levels have constant current output.

[0003] The existing ore-fired furnace has no secondary utilization of the flue gas after high-temperature incineration, which leads to waste of resources and pollution of the environment. Utility Model Content

[0004] The utility model aims to provide a secondary recovery device for waste heat of an ore-fired furnace. The device is adopted to work, thereby solving the problem that the flue gas after high-temperature incineration in the existing ore-fired furnace is not reused for a second time, resulting in waste of resources and environmental pollution.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a secondary recovery device for waste heat from an electric arc furnace, comprising a combustion furnace and a transport water pipe fixedly connected to the upper end of the combustion furnace, a water supply pipe is arranged at the end of the transport water pipe away from the combustion furnace, a water pump assembly is fixedly connected to the lower end of the water supply pipe, a water-cooled flue is fixedly connected to the upper end of the combustion furnace, a waste heat utilization assembly is fixedly connected to the lower end of the water-cooled flue, a pipeline pump assembly is fixedly connected to one side of the waste heat utilization assembly, the waste heat utilization assembly comprises a second smoke exhaust pipe and a pull-out box movably connected to the lower end of the second smoke exhaust pipe, a water storage box is fixedly connected to one side of the second smoke exhaust pipe, a heat conduction pipe is arranged inside the water storage box, and one end of the heat conduction pipe is fixedly connected to the second smoke exhaust pipe.

[0006] Preferably, the combustion furnace includes an outer shell and a smoke exhaust pipe fixedly connected to one side of the outer shell. A circular groove is provided on the upper surface of the outer shell, and the circular groove matches the transport water pipe. A door groove is provided on one side of the combustion furnace, and there are three door grooves. A furnace door is provided inside the door groove, and a rotating shaft is movably connected to one side of the furnace door.

[0007] Preferably, a smoke exhaust groove is provided at the upper end of the smoke exhaust pipe 1, and the smoke exhaust pipe 1 is connected to the water-cooled flue.

[0008] Preferably, the transport water pipe includes a No. 4 pump room pipeline and other pump room pipelines are arranged on the upper end of the No. 4 pump room pipeline.

[0009] Preferably, the water pump assembly includes a centrifugal water pump and a connecting water pipe fixedly connected to the upper end of the centrifugal water pump, a drainage pipe 1 fixedly connected to the lower end of the centrifugal water pump, and the upper end of the connecting water pipe fixedly connected to the transport water pipe.

[0010] Preferably, a second smoke exhaust groove is provided at the upper end of the second smoke exhaust pipe, a baffle is fixedly connected to the lower end of the second smoke exhaust pipe, a drawer block is fixedly connected to one side of the drawer box, and a fixed block is movably connected to one side of the drawer block.

[0011] Preferably, a groove is provided on one side of the water storage box, an exhaust air is fixedly connected to one side of the water storage box, a water inlet pipe is fixedly connected to the upper end of the water storage box, and a control valve is arranged inside the water inlet pipe.

[0012] Preferably, the pipeline pump assembly includes a vertical pipeline pump and a drain pipe 2 fixedly connected to one side of the vertical pipeline pump, and a drain pipe 3 fixedly connected to the other side of the vertical pipeline pump, and the drain pipe 2 matches the groove.

[0013] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0014] The utility model proposes a secondary recovery device for waste heat from an electric arc furnace, comprising a combustion furnace and a transport water pipe fixedly connected to the upper end of the combustion furnace, a water supply pipe is arranged at one end of the transport water pipe away from the combustion furnace, a water pump assembly is fixedly connected to the lower end of the water supply pipe, a water-cooled flue is fixedly connected to the upper end of the combustion furnace, a waste heat utilization assembly is fixedly connected to the lower end of the water-cooled flue, a pipeline pump assembly is fixedly connected to one side of the waste heat utilization assembly, the waste heat utilization assembly comprises a second smoke exhaust pipe and a pull-out box movably connected to the lower end of the second smoke exhaust pipe, a water storage box is fixedly connected to one side of the second smoke exhaust pipe, a heat conduction pipe is arranged inside the water storage box, one end of the heat conduction pipe is fixedly connected to the second smoke exhaust pipe, smoke enters the second smoke exhaust pipe through a second smoke exhaust slot, and the heat of the smoke heats the water inside the water storage box through the heat conduction pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the utility model;

[0016] Figure 2 It is a schematic diagram of a combustion furnace of the utility model;

[0017] Figure 3 It is a schematic diagram of the water pump assembly of the utility model;

[0018] Figure 4 This is a schematic diagram of a waste heat utilization component of the utility model;

[0019] Figure 5 This is a schematic diagram of a pipeline pump assembly of the present utility model.

[0020] In the figure: 1. combustion furnace; 11. shell; 111. circular groove; 112. door groove; 113. furnace door; 114. rotating shaft; 12. exhaust pipe 1; 121. exhaust trough; 2. transport water pipe; 21. No. 4 pump room pipeline; 22. other pump room pipelines; 3. water supply pipe; 4. water pump assembly; 41. centrifugal water pump; 42. connecting water pipe; 43. drain pipe 1; 5. water-cooled flue; 6. waste heat utilization assembly; 61. exhaust pipe 2; 611. exhaust trough 2; 612. baffle; 62. pull-out box; 621. pull-out block; 622. fixing block; 63. heat conduction pipe; 64. water storage box; 641. groove; 642. exhaust air; 643. water inlet pipe; 7. pipeline pump assembly; 71. vertical pipeline pump; 72. drain pipe 2; 73. drain pipe 3. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] In order to further understand the content of the utility model, the utility model is described in detail in conjunction with the accompanying drawings.

[0023] Combination Figure 1-Figure 5A secondary recovery device for waste heat from an ore-fired furnace comprises a combustion furnace 1 and a transport water pipe 2 fixedly connected to the upper end of the combustion furnace 1, a water supply pipe 3 is arranged at one end of the transport water pipe 2 away from the combustion furnace 1, a water pump assembly 4 is fixedly connected to the lower end of the water supply pipe 3, a water-cooled flue 5 is fixedly connected to the upper end of the combustion furnace 1, a waste heat utilization assembly 6 is fixedly connected to the lower end of the water-cooled flue 5, a pipeline pump assembly 7 is fixedly connected to one side of the waste heat utilization assembly 6, the combustion furnace 1 comprises an outer shell 11 and a smoke exhaust pipe 12 is fixedly connected to one side of the outer shell 11, a circular groove 111 is provided on the upper surface of the outer shell 11, the circular groove 111 matches the transport water pipe 2, a door groove 112 is provided on one side of the combustion furnace 1, three door grooves 112 are provided, a furnace door 113 is arranged inside the door groove 112, a rotating shaft 114 is movably connected to one side of the furnace door 113, and a furnace door 113 is provided at the upper end of the smoke exhaust pipe 12. The smoke exhaust groove 121 and the smoke exhaust pipe 12 are connected to the water-cooled flue 5. The transport water pipe 2 includes the No. 4 pump room pipe 21 and other pump room pipes 22 are arranged on the upper end of the No. 4 pump room pipe 21. The water pump assembly 4 includes a centrifugal water pump 41 and a connecting water pipe 42 is fixedly connected to the upper end of the centrifugal water pump 41. The lower end of the centrifugal water pump 41 is fixedly connected to a drain pipe 43. The upper end of the connecting water pipe 42 is fixedly connected to the transport water pipe 2. By opening the furnace door 113 and rotating it on the rotating shaft 114 to open it, the groove 112 can be used to add materials to heat the transport water pipe 2. The centrifugal water pump 41 drives the water inside the No. 4 pump room pipe 21 to be discharged into the drain pipe 43. The drain pipe 43 transports hot water to the bathing area. The water-cooled flue 5 can effectively cool down, ensure the use periodicity of the cloth bag of the dust removal equipment of the main body of the electric arc furnace, and at the same time play a certain cooling and protective role on the flue body.

[0024] The waste heat utilization component 6 includes a second smoke exhaust pipe 61 and a pull-out box 62 movably connected to the lower end of the second smoke exhaust pipe 61, a water storage box 64 is fixedly connected to one side of the second smoke exhaust pipe 61, a heat conduction pipe 63 is arranged inside the water storage box 64, one end of the heat conduction pipe 63 is fixedly connected to the second smoke exhaust pipe 61, a second smoke exhaust groove 611 is provided at the upper end of the second smoke exhaust pipe 61, a baffle 612 is fixedly connected to the lower end of the second smoke exhaust pipe 61, a pull-out block 621 is fixedly connected to one side of the pull-out box 62, a fixed block 622 is movably connected to one side of the pull-out block 621, a groove 641 is provided on one side of the water storage box 64, and an exhaust air 6 is fixedly connected to one side of the water storage box 64. 42. The upper end of the water storage box 64 is fixedly connected with a water inlet pipe 643, and a control valve is arranged inside the water inlet pipe 643. The pipeline pump assembly 7 includes a vertical pipeline pump 71 and a drain pipe 2 72 fixedly connected to one side of the vertical pipeline pump 71, and a drain pipe 3 73 fixedly connected to the other side of the vertical pipeline pump 71. The drain pipe 2 72 matches the groove 641. The smoke enters the smoke exhaust pipe 2 61 through the smoke exhaust groove 2 611. The heat of the smoke heats the water inside the water storage box 64 through the heat conduction pipe 63. The vertical pipeline pump 71 drives the water inside the drain pipe 2 72 to be discharged into the drain pipe 3 73. The drain pipe 3 73 transports hot water to the washing area.

[0025] The utility model is further described below in conjunction with embodiments.

[0026] Working principle:

[0027] By opening the furnace door 113 and rotating it on the rotating shaft 114, the material heating and transport water pipe 2 can be added to the groove 112, and the centrifugal water pump 41 drives the water inside the pipe 21 of the No. 4 pump room to be discharged into the drain pipe 1 43, and the drain pipe 1 43 transports hot water to the bathing area. The smoke generated by the burning materials enters the smoke exhaust pipe 2 61 through the smoke exhaust groove 2 611, and the heat of the smoke heats the water inside the water storage box 64 through the heat conduction pipe 63. The heat of the smoke heats the water inside the water storage box 64 through the heat conduction pipe 63, and the vertical pipeline pump 71 drives the water inside the drain pipe 2 72 to be discharged into the drain pipe 3 73, and the drain pipe 3 73 transports hot water to the washing area. The cigarette ash formed after long-term use can be cleaned by pulling the pull-out box 62.

[0028] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

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

Claims

1. A secondary recovery device for waste heat from an electric arc furnace, comprising a combustion furnace (1) and a transport water pipe (2) fixedly connected to the upper end of the combustion furnace (1), a water supply pipe (3) being arranged at one end of the transport water pipe (2) away from the combustion furnace (1), a water pump assembly (4) being fixedly connected to the lower end of the water supply pipe (3), a water-cooled flue (5) being fixedly connected to the upper end of the combustion furnace (1), a waste heat utilization assembly (6) being fixedly connected to the lower end of the water-cooled flue (5), and a pipeline pump assembly (7) being fixedly connected to one side of the waste heat utilization assembly (6), characterized in that: The waste heat utilization component (6) comprises a second smoke exhaust pipe (61) and a drawer box (62) movably connected to the lower end of the second smoke exhaust pipe (61); a water storage box (64) is fixedly connected to one side of the second smoke exhaust pipe (61); a heat conduction pipe (63) is arranged inside the water storage box (64); and one end of the heat conduction pipe (63) is fixedly connected to the second smoke exhaust pipe (61).

2. The secondary recovery device for waste heat from a submerged arc furnace according to claim 1, characterized in that: The combustion furnace (1) comprises an outer shell (11) and a smoke exhaust pipe (12) fixedly connected to one side of the outer shell (11); a circular groove (111) is provided on the upper surface of the outer shell (11); the circular groove (111) matches the water transport pipe (2); a door groove (112) is provided on one side of the combustion furnace (1); three door grooves (112) are provided; a furnace door (113) is provided inside the door groove (112); and a rotating shaft (114) is movably connected to one side of the furnace door (113).

3. The secondary recovery device for waste heat from a submerged arc furnace according to claim 2, characterized in that: A smoke exhaust groove (121) is provided at the upper end of the smoke exhaust pipe (12), and the smoke exhaust pipe (12) is connected to the water-cooled flue (5).

4. The secondary recovery device for waste heat from a submerged arc furnace according to claim 1, characterized in that: The transport water pipe (2) comprises a No. 4 pump room pipe (21) and other pump room pipes (22) are arranged at the upper end of the No. 4 pump room pipe (21).

5. The secondary recovery device for waste heat from a submerged arc furnace according to claim 4, characterized in that: The water pump assembly (4) comprises a centrifugal water pump (41) and a connecting water pipe (42) fixedly connected to the upper end of the centrifugal water pump (41), a drainage pipe (43) fixedly connected to the lower end of the centrifugal water pump (41), and the upper end of the connecting water pipe (42) fixedly connected to the transport water pipe (2).

6. The secondary recovery device for waste heat from a submerged arc furnace according to claim 1, characterized in that: The second smoke exhaust pipe (61) is provided with a second smoke exhaust groove (611) at the upper end, a baffle (612) is fixedly connected to the lower end of the second smoke exhaust pipe (61), a drawer block (621) is fixedly connected to one side of the drawer box (62), and a fixed block (622) is movably connected to one side of the drawer block (621).

7. The secondary recovery device for waste heat from a submerged arc furnace according to claim 6, characterized in that: A groove (641) is provided on one side of the water storage box (64), an exhaust air (642) is fixedly connected to one side of the water storage box (64), a water inlet pipe (643) is fixedly connected to the upper end of the water storage box (64), and a control valve is provided inside the water inlet pipe (643).

8. The device for secondary recovery of waste heat from a submerged arc furnace according to claim 7, characterized in that: The pipeline pump assembly (7) comprises a vertical pipeline pump (71) and a second drainage pipe (72) fixedly connected to one side of the vertical pipeline pump (71), and a third drainage pipe (73) fixedly connected to the other side of the vertical pipeline pump (71), wherein the second drainage pipe (72) matches the groove (641).

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