Yellow phosphorus electric furnace stokehole flue gas collecting device and system

Abstract

The utility model provides a yellow phosphorus electric furnace stokehole flue gas collecting device which comprises a flue gas cover, a flue gas opening is formed in the top of the flue gas cover, the flue gas cover is connected with a track through idler wheels, and the flue gas cover is made of fire-resistant heat insulation materials. The smoke hood is of a multi-layer structure and sequentially comprises a coating, a color steel plate, a refractory castable layer and a refractory fiber cotton layer from outside to inside. The utility model further provides a system for collecting the flue gas in front of the yellow phosphorus electric furnace, the flue gas port is connected with a flue gas pipeline, and the flue gas pipeline is connected with a flue gas purification system. The device is driven by the motor, can be operated through a remote controller, and is convenient for operators to operate; high-temperature slag can be isolated, and potential safety hazards can be eliminated; the size is relatively small, local arrangement can be achieved, and a furnace front area does not need to be totally closed; the stokehole flue gas collecting device is connected into a flue gas treatment system, so that the stokehole flue gas can be effectively collected by utilizing the negative pressure of the system. A heat insulation material is arranged on the inner side of the smoke hood, and smoke hood deformation caused by high-temperature slag roasting is avoided.

Description

Technical Field

[0001] This utility model relates to the field of industrial smelting electric furnaces, specifically to a flue gas collection device and system for a yellow phosphorus electric furnace. Background Technology

[0002] When slag is discharged from a yellow phosphorus electric furnace, a large amount of flue gas is generated in front of the furnace. If this flue gas cannot be effectively collected and treated, it will have several adverse effects: First, the flue gas will be directly and unorganizedly discharged into the atmosphere, causing environmental pollution; second, the flue gas will permeate the operating area, posing a health hazard to the operators; and third, slag discharge in an electric furnace is a high-temperature operation, and without isolation, safety accidents are likely to occur. Therefore, it is necessary to design a device to collect the flue gas in front of the furnace. Utility Model Content

[0003] To address the aforementioned problems, this utility model provides a flue gas collection device for a yellow phosphorus electric furnace, including a flue gas hood with a flue gas inlet at the top. The flue gas hood is connected to a track via rollers, and the flue gas hood is made of refractory and heat-insulating material.

[0004] The track is equipped with limiters at the top and bottom, and the bottom of the track is connected to the track foundation.

[0005] The outer side of the fume hood is connected to a drive motor, and the drive motor is connected to rollers.

[0006] The side of the fume hood has an observation port, and the observation port is covered by a movable baffle, which is connected to a baffle track.

[0007] The smoke hood has a multi-layer structure, consisting of a coating layer, a color steel plate, a refractory castable layer, and a refractory fiber cotton layer from the outside to the inside.

[0008] The coating is a rare earth surface coating.

[0009] The refractory castable layer is a castable layer made from one of the following: brown corundum mullite refractory castable, high alumina refractory castable, or perlite insulating castable.

[0010] The refractory fiber cotton layer is an aluminum silicate refractory fiber cotton layer.

[0011] This utility model also provides a flue gas collection system for a yellow phosphorus electric furnace. Using the above-mentioned collection device, the track is divided into a working area and a standby area. The working area is the end closer to the yellow phosphorus electric furnace, and the standby area is the end farther away from the yellow phosphorus electric furnace. The slag ditch is located directly below the working area. The flue gas outlet is connected to the flue gas pipeline, and the flue gas pipeline is connected to the flue gas purification system. The flue gas pipeline is connected to an automatic alignment device.

[0012] The flue gas duct is an adjustable telescopic duct.

[0013] The tracks are symmetrically arranged on both sides of the slag ditch, and the rollers are symmetrically arranged on both sides of the flue gas hood.

[0014] In addition to being used in yellow phosphorus electric furnaces, this patent can also be used in other industrial smelting electric furnaces.

[0015] The beneficial effects of this utility model are as follows:

[0016] 1. The flue gas collection device in front of the furnace is driven by a motor and can be operated by a remote control, which is convenient for operators.

[0017] 2. The flue gas collection device in front of the furnace can isolate high-temperature slag and eliminate safety hazards.

[0018] 3. The flue gas collection device in front of the furnace is relatively small in size and can be installed locally, without the need to completely enclose the area in front of the furnace.

[0019] 4. The flue gas collection device in front of the furnace is connected to the flue gas treatment system, which can effectively collect the flue gas in front of the furnace by utilizing the negative pressure of the system.

[0020] 5. Install heat insulation material inside the flue hood to prevent the flue hood from deforming due to the high temperature of the slag. Attached Figure Description

[0021] Figure 1 Top view of the flue gas collection system described in this utility model.

[0022] Figure 2 Front view of the flue gas collection device of this utility model.

[0023] Figure 3 Side view of the flue gas collection device of this utility model.

[0024] Figure 4 A cross-sectional view of the smoke hood described in this utility model.

[0025] The markings in the diagram are as follows: 1. Fume hood; 101. Coating; 102. Color steel plate; 103. Refractory castable layer; 104. Refractory fiber cotton layer; 2. Baffle; 201. Baffle track; 202. Observation port; 3. Fume outlet; 4. Roller; 5. Track; 6. Track foundation; 7. Drive motor; 8. Limit switch; 9. Fume duct; 10. Slag ditch; 11. Fume purification system; 12. Yellow phosphorus electric furnace. Detailed Implementation

[0026] The embodiments of this utility model will be described in detail below with reference to the examples. The following examples are only used to illustrate this utility model and should not be regarded as limiting the scope of this utility model.

[0027] Example 1

[0028] A flue gas collection device for a yellow phosphorus electric furnace includes a flue gas hood 1, a flue gas inlet 3 on the top of the flue gas hood 1, and a track 5 connected to the flue gas hood 1 by rollers 4. The flue gas hood 1 is made of refractory and heat-insulating material.

[0029] A limiter 8 is provided above the track 5, and the limiter 8 is located at the front end and rear end of the track 5; the bottom of the track 5 is connected to the track foundation 6.

[0030] The outer side of the fume hood 1 is connected to a drive motor 7, and the drive motor 7 is connected to a roller 4.

[0031] The side of the fume hood 1 is provided with an observation port 202, and the observation port 202 is covered by a movable baffle 2, which is connected to a baffle track 201.

[0032] The smoke hood 1 has a multi-layer structure, consisting of a coating layer 101, a color steel plate 102, a refractory castable layer 103, and a refractory fiber cotton layer 104, from the outside to the inside.

[0033] The coating 101 is a rare earth surface coating.

[0034] The refractory castable layer 103 is a casting layer made from one of brown corundum mullite refractory castable, high alumina refractory castable, or perlite insulating castable.

[0035] The refractory fiber cotton layer 104 is an aluminum silicate refractory fiber cotton layer.

[0036] A flue gas collection system for a yellow phosphorus electric furnace employs the aforementioned collection device. The track 5 is divided into a working area and a standby area. The working area is located at the end closest to the yellow phosphorus electric furnace 12, and the standby area is located at the end furthest from the yellow phosphorus electric furnace 12. The slag ditch 10 is located directly below the working area. The flue gas inlet 3 is connected to the flue gas duct 9, which is connected to the flue gas purification system 11. The flue gas duct 9 is connected to an automatic alignment device.

[0037] The flue gas duct 9 is a telescopic duct with adjustable length.

[0038] Among them, the track 5 is symmetrically arranged on both sides of the slag ditch 10, and the roller 4 is symmetrically arranged on both sides of the flue gas hood 1.

[0039] Example 2

[0040] Using the device shown in the figure, the working principle of this utility model is as follows:

[0041] In standby mode, the flue gas hood 1 is located in the standby area. When the yellow phosphorus electric furnace 12 needs to discharge slag, the drive motor 7 drives the roller 4 to move the flue gas hood 1 along the track 5 towards the working area. The front end of the track 5 has a limiter 8. After the flue gas hood 1 reaches the working area (directly above the slag trough 10), it stops moving forward due to the blockage of the limiter 8. The flue gas pipe 9 above the working area automatically connects with the flue gas outlet 3. The slag is discharged into the slag trough 10 through the yellow phosphorus electric furnace 12. The flue gas purification system 11 effectively collects and purifies the flue gas through negative pressure. The flue gas enters the flue gas pipe 9 through the flue gas hood 1 and finally enters the flue gas purification system 11.

[0042] After the work is completed, the flue gas duct 9 is separated from the flue gas outlet 3. The drive motor 7 drives the roller 4 to move the flue gas hood 1 along the track 5 towards the standby area. The end of the track 5 is limited by the limiter 8 to prevent the flue gas hood 1 from derailing due to continuous backward movement.

[0043] An observation port 202 is provided on the side of the fume hood 1. The observation port 202 is covered by a movable baffle 2, which slides along a baffle track 201. The operator can periodically remove the baffle 2 to observe the interior of the fume hood 1 through the observation port 202.

[0044] In addition, the flue gas duct 9 can be adjusted to a telescopic duct with adjustable length, which can adjust the length according to the position of the flue gas hood 1.

Claims

1. A yellow phosphorus electric furnace furnace front flue gas collecting device, characterized in that, Includes a smoke hood (1), a smoke vent (3) on the top of the smoke hood (1), the smoke hood (1) is connected to a track (5) by rollers (4), and the smoke hood (1) is a smoke hood made of fire-resistant and heat-insulating material.

2. A yellow phosphorus furnace furnace front flue gas collecting device according to claim 1, characterized in that, A limiter (8) is provided above the track (5), and the limiter (8) is located at the front end and the rear end of the track (5); the bottom of the track (5) is connected to the track foundation (6).

3. A yellow phosphorus furnace furnace front flue gas collecting device according to claim 1, characterized in that, The outer side of the smoke hood (1) is connected to a drive motor (7), and the drive motor (7) is connected to a roller (4).

4. A yellow phosphorus furnace furnace front flue gas collecting device according to claim 1, characterized in that, The side of the smoke hood (1) is provided with an observation port (202), and the observation port (202) is covered with a movable baffle (2), which is connected to the baffle track (201).

5. A yellow phosphorus furnace furnace front flue gas collecting device according to claim 1, characterized in that, The smoke hood (1) has a multi-layer structure, consisting of a coating (101), a color steel plate (102), a refractory castable layer (103), and a refractory fiber cotton layer (104) from the outside to the inside.

6. A yellow phosphorus furnace furnace front flue gas collecting device according to claim 5, characterized in that, The coating (101) is a rare earth surface coating.

7. A yellow phosphorus furnace furnace front flue gas collecting device according to claim 5, characterized in that, The refractory castable layer (103) is a castable layer made from one of brown corundum mullite refractory castable, high alumina refractory castable or perlite thermal insulation castable.

8. A yellow phosphorus furnace furnace front flue gas collecting device according to claim 5, characterized in that, The refractory fiber cotton layer (104) is an aluminum silicate refractory fiber cotton layer.

9. A yellow phosphorus electric furnace furnace front flue gas collection system comprising the collection device according to any one of claims 1 to 8, characterized in that, The track (5) is divided into a working area and a standby area. The working area is the end closest to the yellow phosphorus electric furnace (12), and the standby area is the end furthest from the yellow phosphorus electric furnace (12). The slag ditch (10) is located directly below the working area. The flue gas outlet (3) is connected to the flue gas pipe (9), and the flue gas pipe (9) is connected to the flue gas purification system (11). The flue gas pipe (9) is connected to the automatic alignment device.

10. A yellow phosphorus furnace furnace front flue gas collection system according to claim 9, characterized in that, The flue gas duct (9) is a telescopic duct with adjustable length.

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