Plasma excess material recovery device

Abstract

The utility model relates to the technical field of plasma smelting furnaces. The plasma excess material recovery device comprises a furnace body, a screw feeder arranged on one side of the furnace body and communicated with the furnace body, a waste heat recovery mechanism arranged on the outer side of the furnace body and communicated with the furnace body, and an excess material recovery box arranged at the bottom of the furnace body and communicated with the furnace body. The salvage assembly is arranged on the inner side and the outer side of the furnace body in a penetrating mode, and the plasma torches are arranged on the inner side of the furnace body in the circumferential direction of the inner side wall of the furnace body at equal intervals. A molten pool is arranged in the middle of the interior of the furnace body through a supporting rod, and the output end of the plasma torch corresponds to the molten pool; the salvage assembly comprises a hydraulic telescopic machine arranged on the inner side and the outer side of the furnace body in a penetrating mode and a hemispherical salvage net fixedly arranged at the extending end of the hydraulic telescopic machine and matched with a molten pool in size. A guide channel is formed in the side wall of the molten pool. The utility model aims to provide the plasma excess material recovery device, so that the heating efficiency and the energy utilization rate are improved, and the pool bottom condensation and slag accumulation are avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of plasma melting furnaces, in particular to a plasma residual material recovery device. Background Art

[0002] Plasma melting vaporization technology is internationally recognized as a "third-generation" technology for the complete and harmless disposal of hazardous waste. It offers unmatched environmental advantages and enormous potential for application. Using a plasma torch, hazardous waste is heated to over 1500 degrees Celsius, melting it into harmless crystals for discharge, effectively disposing of the waste.

[0003] However, it should be noted that: 1. During the melting process, the bottom of the molten pool is far away from the plasma torch and it is difficult to maintain a temperature above 1500 degrees Celsius, which causes the material to come into contact with the bottom of the molten pool and condense at the bottom.

[0004] 2. During the melting process, the waste heat generated inside the furnace will be wasted and cannot be effectively converted into useful heat for recycling in the furnace, resulting in energy waste and low utilization rate.

[0005] 3. Slag is deposited in the molten pool and is difficult to be discharged smoothly, resulting in reduced heating efficiency in the molten pool.

[0006] Therefore, how to design a plasma waste material recovery device that can solve the above technical problems is a technical problem that needs to be solved. Utility Model Content

[0007] In order to solve the above problems, the purpose of the present invention is to provide a plasma waste material recovery device to improve heating efficiency and energy utilization, and avoid condensation at the bottom of the pool and slag accumulation.

[0008] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme: it includes a furnace body, a screw feeder arranged on one side of the furnace body and connected to the furnace body, a waste heat recovery mechanism arranged on the outside of the furnace body and connected to the furnace body, a waste material recovery box arranged at the bottom of the furnace body and connected to the furnace body, a salvage assembly passing through the inside and outside of the furnace body, and a plurality of plasma torches arranged on the inside of the furnace body and equidistantly arranged along the circumferential direction of the inner wall of the furnace body; a molten pool is provided in the middle part of the furnace body through a support rod, and the output end of the plasma torch corresponds to the molten pool; the salvage assembly includes a hydraulic telescopic machine passing through the inside and outside of the furnace body and a hemispherical scoop net fixedly mounted on the protruding end of the hydraulic telescopic machine and matching the size of the molten pool; a guide channel is provided on the side wall of the molten pool; a heating device is provided at the bottom of the molten pool; a flue gas outlet is provided on the side wall of the furnace body, the waste heat recovery mechanism includes a waste heat recovery box, a heat exchanger arranged inside the waste heat recovery box, a hot gas pipe connecting the flue gas outlet and the input end of the heat exchanger, and an output pipe connecting the output end of the heat exchanger and the heating device.

[0009] Furthermore, the residual material recovery box is connected to the furnace body and is provided with an output valve.

[0010] Furthermore, the screw feeder is arranged on the upper part of the furnace body, and a guide slide is provided at the output end of the screw feeder, and the bottom end of the guide slide is arranged directly above the molten pool.

[0011] Furthermore, a sealed insulating door is hinged on the side wall of the furnace body.

[0012] Furthermore, the furnace body, the molten pool, the hemispherical scoop net and the telescopic rod of the hydraulic telescopic machine are all made of highly heat-resistant and erosion-resistant materials.

[0013] Furthermore, the screw feeder is connected to a feed hopper.

[0014] The utility model has the following beneficial effects:

[0015] 1- The utility model sets a salvage component. When the material enters the molten pool, it is placed above the hemispherical scooping net. On the one hand, it prevents the material from directly contacting the bottom of the molten pool and producing condensed residues that adhere to the bottom of the molten pool and are difficult to clean. On the other hand, it can decompose the components into a molten state and overflow to the outside of the molten pool through the guide slide as the liquid level in the molten pool rises. The slag is placed above the hemispherical scooping net and moves up and down by a hydraulic telescopic machine to ensure smooth slag discharge.

[0016] 2-The utility model sets up a waste heat recovery mechanism to recover the waste heat generated during operation and realize the reuse of thermal energy. On the one hand, it improves the energy utilization efficiency and reduces energy waste. On the other hand, it ensures that the bottom of the molten pool continues to maintain a high temperature to avoid condensation at the bottom of the molten pool. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the internal structure of the utility model.

[0018] Description of reference numerals:

[0019] 1-furnace body, 11-molten pool, 111-guide channel, 12-heating equipment, 13-smoke outlet, 14-output valve, 15-sealed insulation door;

[0020] 2-screw feeder, 21-guide slide, 22-feed hopper;

[0021] 3-waste heat recovery mechanism, 31-waste heat recovery box, 32-heat exchanger, 33-hot gas pipe, 34-output pipe;

[0022] 4-Residue recycling box;

[0023] 5- salvage assembly, 51- hydraulic telescopic machine, 52- hemispherical scoop net;

[0024] 6- Plasma torch. DETAILED DESCRIPTION

[0025] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments:

[0026] See also Figure 1 As shown, the scheme includes a furnace body 1, a screw feeder 2 provided on one side of the furnace body 1 and connected to the furnace body 1, a waste heat recovery mechanism 3 provided on the outside of the furnace body 1 and connected to the furnace body 1, a residual material recovery box 4 provided at the bottom of the furnace body 1 and connected to the furnace body 1, a salvage component 5 passing through the inside and outside of the furnace body 1, and a plurality of plasma torches 6 provided on the inside of the furnace body 1 and equidistantly arranged along the circumference of the inner wall of the furnace body 1.

[0027] A molten pool 11 is provided in the middle of the furnace body 1 through a support rod, and the output end of the plasma torch 6 corresponds to the molten pool 11; the salvage assembly 5 includes a hydraulic telescopic machine 51 penetrating the inside and outside of the furnace body 1 and a hemispherical scooping net 52 fixed to the protruding end of the hydraulic telescopic machine 51 and matching the size of the molten pool 11; a guide channel 111 is opened on the side wall of the molten pool 11; and a heating device 12 is provided at the bottom of the molten pool 11.

[0028] A flue gas outlet 13 is provided on the side wall of the furnace body 1, and the waste heat recovery mechanism 3 includes a waste heat recovery box 31, a heat exchanger 32 arranged inside the waste heat recovery box 31, a hot air pipe 33 connecting the flue gas outlet 13 and the input end of the heat exchanger 32, and an output pipe 34 connecting the output end of the heat exchanger 32 and the heating device 12.

[0029] The residual material recovery box 4 is connected to the furnace body 1 and is provided with an output valve 14 . The output valve 14 is opened and closed by outputting a corresponding control signal, so as to facilitate the recovery of the bottom crystals and slag in the furnace body 1 .

[0030] The screw feeder 2 is arranged on the upper part of the furnace body 1 , and a guide slide 21 is provided at the output end of the screw feeder 2 , and the bottom end of the guide slide 21 is arranged directly above the molten pool 11 .

[0031] Furthermore, a sealed insulating door 15 is hinged on the side wall of the furnace body 1 , and liquid is added into the furnace body 1 by opening the sealed insulating door 15 .

[0032] Furthermore, the furnace body 1, the molten pool 11, the hemispherical scoop net 52 and the telescopic rod of the hydraulic telescopic machine 51 are all made of highly heat-resistant and erosion-resistant materials.

[0033] Furthermore, the screw feeder 2 is connected to a feed hopper 22 for conveniently adding materials into the furnace body 1 .

[0034] The working principle is roughly as follows:

[0035] Before operation, a high-temperature molten pool 11 is established by the heating device 12, and a water quenching solution is added to the furnace body 1 so that it is placed at the bottom of the furnace body 1 to prevent the water quenching solution from flowing back into the molten pool 11 through the guide channel 111; hazardous waste, broken glass, limestone, etc. are fed from the feed hopper 22 and the screw feeder 2 into the molten pool 11 above the hemispherical scooping net 52, where they are decomposed under the high-temperature environment. The inorganic components and ash are molten and overflow through the guide channel 111 into the bottom of the furnace body 1, where they are quenched into crystals by the water quenching solution. The slag that cannot be decomposed is placed on the hemispherical scooping net 52, and the telescopic hydraulic press works regularly, moving the hemispherical scooping net 52 up and down to move it closer to the guide chute 21, so that the slag is sent out of the molten pool 11 through the guide chute 21;

[0036] At the same time, the waste heat generated during operation in the furnace body 1 enters the heat exchanger 32 through the flue gas outlet 13 and the hot gas pipe 33 to absorb the waste heat, and the heat energy is transported to the heating equipment 12 (the heating equipment 12 includes high-temperature heating equipment 12 such as molybdenum silicon heaters) through the output pipe 34 through the heat exchanger 32, thereby realizing the recycling of heat energy. On the one hand, it improves the utilization efficiency of energy and reduces energy waste. On the other hand, it ensures that the bottom of the molten pool 11 continues to maintain a high temperature to avoid condensation at the bottom of the molten pool 11.

[0037] The above description is only a specific embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformation made using the contents of the description and drawings of the present invention, or directly or indirectly applied in other related technical fields, is also included in the patent protection scope of the present invention.

Claims

1. A plasma waste material recovery device, characterized in that: The invention comprises a furnace body (1), a screw feeder (2) provided on one side of the furnace body (1) and connected to the furnace body (1), a waste heat recovery mechanism (3) provided on the outside of the furnace body (1) and connected to the furnace body (1), a waste material recovery box (4) provided on the bottom of the furnace body (1) and connected to the furnace body (1), a salvage assembly (5) provided inside and outside the furnace body (1), and a plurality of plasma torches (6) provided on the inside of the furnace body (1) and arranged at equal distances along the circumference of the inner wall of the furnace body (1); A molten pool (11) is provided in the middle of the furnace body (1) via a support rod, and the output end of the plasma torch (6) corresponds to the molten pool (11); the salvaging assembly (5) comprises a hydraulic telescopic machine (51) passing through the inside and outside of the furnace body (1) and a hemispherical scooping net (52) fixed to the protruding end of the hydraulic telescopic machine (51) and matching the size of the molten pool (11); a guide channel (111) is provided on the side wall of the molten pool (11); and a heating device (12) is provided at the bottom of the molten pool (11); The side wall of the furnace body (1) is provided with a flue gas outlet (13), and the waste heat recovery mechanism (3) comprises a waste heat recovery box (31), a heat exchanger (32) arranged inside the waste heat recovery box (31), a hot air pipe (33) connecting the flue gas outlet (13) and the input end of the heat exchanger (32), and an output pipe (34) connecting the output end of the heat exchanger (32) and the heating device (12).

2. The plasma waste material recovery device according to claim 1, characterized in that: The residual material recovery box (4) is in communication with the furnace body (1) and is provided with an output valve (14).

3. The plasma waste material recovery device according to claim 1, characterized in that: The screw feeder (2) is arranged on the upper part of the furnace body (1), and a guide slide (21) is provided at the output end of the screw feeder (2), and the bottom end of the guide slide (21) is arranged directly above the molten pool (11).

4. The plasma waste material recovery device according to claim 1, characterized in that: A sealed insulating door (15) is hingedly connected to the side wall of the furnace body (1).

5. The plasma waste material recovery device according to claim 1, characterized in that: The furnace body (1), the molten pool (11), the hemispherical scoop net (52) and the telescopic rod of the hydraulic telescopic machine (51) are all made of highly heat-resistant and erosion-resistant materials.

6. The plasma waste material recovery device according to claim 1, characterized in that: The screw feeder (2) is connected to a feed hopper (22).

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