Dust removal system of high titanium slag smelting furnace

Abstract

The invention discloses a dust removal system of a high titanium slag smelting furnace, which comprises an air inducing pipe, a fan, an exhaust pipe, a plurality of dust removal chambers, a plurality of elevators and a plurality of dust removal bags, a first ash bucket is connected below the bottom of each dust removal chamber, a first gate valve is arranged close to the lower end of each first ash bucket, each elevator is arranged above the top of each dust removal chamber, and a second gate valve is arranged below each elevator. A hanging piece is arranged in each dust removal chamber; a plurality of through holes are formed in the bottom of each dust removal chamber, each through hole is communicated with the corresponding first dust hopper and the inner space of the dust removal chamber, the periphery of the upper part of each through hole is hermetically connected with the opening part of one dust removal bag, the upper end of each dust removal bag is hung on a hanging piece, and each lifter drives the hanging piece and the plurality of dust removal bags to move up and down through a connecting piece to remove dust; one end of the air inducing pipe is arranged on the high titanium slag smelting furnace, and the other end of the air inducing pipe is communicated with the inner space of each first ash hopper through the connecting branch pipe. According to the invention, non-stop dust removal operation can be realized, and the service life of the dust removal bag is effectively prolonged.

Description

Technical Field

[0001] The invention relates to the technical field of manufacturing dust removal equipment for smelting furnaces, in particular to a dust removal system for a high-titanium slag smelting furnace. Background Art

[0002] The high titanium slag smelting furnace will produce a lot of dusty flue gas during the smelting process. If these flue gases are directly discharged into the atmosphere, they will pollute the surrounding environment and do not meet environmental protection requirements. Therefore, these flue gases must be dust-removed and purified before they can be discharged into the atmosphere.

[0003] In order to meet the emission standards, people have adopted some dust collectors for dust removal. The commonly used dust collector is the bag dust collector. The working mechanism of the bag dust collector is that the dust-containing flue gas passes through the filter material, and the dust particles are filtered down. The filter material captures coarse dust mainly by inertial collision, and captures fine dust mainly by diffusion and screening. The dust layer of the filter material also has a certain filtering effect. The purified gas enters the clean room above the filter bag and is collected in the exhaust pipe for discharge. The bag dust collector needs to be cleaned after a period of use, otherwise the dust collection hole will lose its filtering effect due to dust blocking.

[0004] The cleaning method of bag filter is usually manual vibration cleaning or air pulse cleaning. However, the flue gas temperature generated by the high-titanium slag smelting furnace is relatively high, about 80-100°C. The manual vibration cleaning method is dirty and tiring, with high labor intensity, poor cleaning effect, and large bag wear. The bag needs to be replaced at least once a year; the use of pulse air cleaning can reduce the labor intensity of manual operation, but the later effect is obviously not good, and the bag wears a lot, and the bag needs to be replaced at least once a year. Therefore, the dust removal bag of the existing high-titanium slag smelting furnace flue gas bag filter has a short service life, poor cleaning effect, and high work intensity. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide a dust removal system for a high-titanium slag smelting furnace, which can perform dust cleaning operations without stopping the high-titanium slag smelting furnace, has high dust removal efficiency, and can effectively extend the service life of the dust removal bag.

[0006] To achieve the above-mentioned purpose, the technical scheme of the present invention is: a dust removal system for a high-titanium slag smelting furnace, comprising an induced draft duct, a fan, and an exhaust duct, and also comprising a plurality of dust removal chambers, a plurality of elevators, and a plurality of dust removal bags, each of which is provided with a bottom and a top, a first ash hopper is connected below the bottom of each dust removal chamber, a first gate valve is installed near the lower end of the first ash hopper, each elevator is installed on the top of the dust removal chamber through a bracket, and a hanging piece is provided in each dust removal chamber;

[0007] A plurality of through holes are provided on the bottom of each dust removal chamber, each through hole is connected to the corresponding first ash hopper internal space and the dust removal chamber internal space, the upper periphery of each through hole is sealed and connected to a dust bag mouth, the upper end of each dust bag is suspended on a hanging piece, each elevator is connected to the hanging piece through a connecting piece and can drive the hanging piece and a plurality of dust bags to move up and down for cleaning;

[0008] One end of the induced draft pipe is arranged on the high titanium slag smelting furnace, and the other end of the induced draft pipe is connected to the inner space of each first ash hopper through a connecting branch pipe;

[0009] The internal spaces of the dust removal chambers are interconnected, and the internal space of at least one dust removal chamber is connected to the air suction port of the fan through an air suction duct, and the exhaust pipe is connected to the exhaust port of the fan.

[0010] Preferably, the lifter is an electric hoist, the connecting member is a chain, and an upper hook is provided in the middle of the upper end of the hanging member and connected to the lower end of the connecting member, so as to facilitate control.

[0011] As a further improvement, a limit and damping spring are installed between the lower part of each elevator and the top of the dust removal chamber, and the connecting piece passes through the middle of the limit and damping spring. This can not only limit the swing of the connecting piece when it moves up and down, prevent the connecting piece and the top of the dust removal chamber from interfering with each other to cause large noise and damage, but also improve the up and down displacement accuracy of the hanging piece; at the same time, it can also reduce the vibration generated between the elevator and the top of the dust removal chamber due to the operation of the elevator, and further reduce the noise generated during dust cleaning.

[0012] Preferably, the hanging member is a hanging plate, and a plurality of lower hooks are arranged at the lower end of the hanging member, and the upper end of each dust bag is hung on one of the lower hooks by a rope, so as to facilitate the hanging of the dust bag.

[0013] As a further improvement, at least one upper limit switch is installed on the top of each dust removal chamber, and when the hanging part touches the upper limit switch, the corresponding elevator stops driving the hanging part to move upward, which can prevent the hanging part from hitting the top and improve the safety of use.

[0014] As a further improvement, a plurality of buffer springs matching with the upper end of the hanging member are installed on the top of each dust removal chamber. The contact between the hanging member and the buffer spring can drive the plurality of dust removal bags to shake, so that the dust in the dust removal bags falls into the first ash hopper more easily, and the dust cleaning effect is better.

[0015] As a further improvement, vibrators are installed on both sides of each of the first ash hoppers to better drop the ash.

[0016] As a further improvement, one end of the induced draft pipe is arranged on the high titanium slag smelting furnace through an induced draft hood, and the induced draft hood is provided with an openable or closable door, which is convenient for loading and unloading materials and can prevent smoke from leaking out.

[0017] The dust bag is preferably a filter bag made of synthetic fiber, natural fiber or glass fiber; a connection flange extends upward from the upper edge of each through hole, the mouth of the dust bag is sleeved on the connection flange, and the C-shaped clamp clamps the outer side of the mouth of the dust bag, and the two ends of the C-shaped clamp are connected by a connection spring. The dust bag has a filtration efficiency of more than 99% for particles larger than 0.1um, and has a small wind resistance, and the resistance loss is usually about 980-1470pa.

[0018] As a further improvement, one end of the induced draft pipe is bifurcated into two induced draft branch pipes, one end of each of which is respectively disposed on two sets of high-titanium slag smelting furnaces. In this way, one set of dust removal device can perform dust removal and purification treatment on two sets of high-titanium slag smelting furnaces, further improving the dust removal efficiency.

[0019] As a further improvement, the other end of the induced draft pipe is arranged horizontally, and a second ash hopper is arranged below each connecting branch pipe at the other end of the induced draft pipe, and a vertical pipe is connected to the lower end of the second ash hopper, and a second gate valve is arranged on the vertical pipe. In this way, the dust-containing flue gas introduced by the induced draft pipe first collects some dust through the second ash hopper, and then is discharged through the vertical pipe and the second gate valve, which can reduce the workload of the dust removal bag and further extend the service life of the dust removal bag.

[0020] Since the present invention is provided with multiple dust removal chambers, multiple first ash hoppers cooperate with the induced draft duct, the suction duct and the fan, the multiple dust removal chambers can perform purification operations at the same time, or the multiple dust removal chambers can partially perform purification operations and partially perform ash cleaning operations, thereby realizing the ash cleaning operation without stopping the high-titanium slag smelting furnace, saving the energy consumption of the high-titanium slag smelting furnace, improving the purification efficiency and achieving better dust removal effect.

[0021] On the other hand, the dust cleaning operation uses a lift to drive the hanging parts and multiple dust removal bags up and down through the connecting parts to clean the dust; compared with manual vibration cleaning or manual air pulse cleaning, this cleaning method has less loss of dust removal bags and effectively extends the service life of dust removal bags. It also greatly reduces the labor intensity of operators in cleaning. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is the front view of the present invention;

[0023] Figure 2 yes Figure 1 A magnified image of point A;

[0024] Figure 3 yes Figure 1 The enlarged view of point B;

[0025] Figure 4 yes Figure 1 Enlarged view of point C;

[0026] Figure 5 yes Figure 1A top view of the hidden induced draft duct and two high-titanium slag smelting furnaces;

[0027] Figure 6 yes Figure 1 The main view of the hidden induced draft duct, connecting branch pipe, second ash hopper, vertical pipe, second gate valve and two high-titanium slag smelting furnaces. DETAILED DESCRIPTION

[0028] The present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0029] Figures 1 to 6 As shown, a dust removal system for a high-titanium slag smelting furnace includes an induced draft duct 1, a fan 2, an exhaust duct 3, seven dust removal chambers 4, seven elevators 5 and two hundred and fifty-two dust removal bags 6. The seven dust removal chambers 4 are connected as one, and the internal spaces of the dust removal chambers 4 are interconnected. The internal space of the dust removal chamber 4 at the rear is connected to the air suction port of the fan 2 through an air suction duct 40, and the exhaust duct 3 is connected to the exhaust port of the fan 2; a rain cover 31 is also provided at the upper end of the exhaust duct 3; the seven elevators 5 are all electric hoists.

[0030] Each dust removal chamber 4 is provided with a bottom and a top, and a first ash hopper 7 is connected to the bottom of each dust removal chamber 4, and a first gate valve 71 is installed near the lower end of the first ash hopper 7, and the first gate valve 71 is an electric gate valve. Each elevator 5 is installed on the top of the dust removal chamber 4 through a bracket 51, and a hanging part 8 is provided in each dust removal chamber 4, and the hanging part 8 is a hanging plate. Each elevator 5 is connected to the hanging part 8 through a connecting part 52 and can drive the hanging part 8 to move up and down; the connecting part 52 is a chain, and an upper hook 81 is provided in the middle of the upper end of the hanging part 8 and connected to the lower end of the connecting part 52. A limit and shock-absorbing spring 53 is also installed between the lower part of the elevator 5 and the top of the dust removal chamber 4, and the connecting member 52 passes through the middle of the limit and shock-absorbing spring 53. This can not only limit the deflection of the connecting member 52 when it moves up and down, and prevent the connecting member 52 and the top of the dust removal chamber 4 from interfering with each other to cause large noise and damage, but also improve the up and down displacement accuracy of the hanging member 8; at the same time, it can also reduce the vibration caused by the elevator 5 working between the elevator 5 and the top of the dust removal chamber 4.

[0031] Thirty-six through holes 41 are provided on the bottom of each dust removal chamber 4, and each through hole 41 connects the internal space of the corresponding first ash hopper 7 and the internal space of the dust removal chamber 4. The upper periphery of each through hole 41 is sealedly connected to the mouth of a dust removal bag 6, and the upper end of each dust removal bag 6 is suspended on the hanging piece 8 by a rope.

[0032] Each of the dust removal bags 6 is a filter bag made of synthetic fiber, natural fiber or glass fiber; a connection flange 44 extends upward from the upper edge of each through hole 41, the mouth of the dust removal bag 6 is sleeved on the connection flange 44, and a C-shaped clamp 45 clamps the outer side of the mouth of the dust removal bag 6, and the two ends of the C-shaped clamp 45 are connected by a connection spring 46. One end of the C-shaped clamp 45 is also provided with a plurality of adjustment holes 451, and one end of the connection spring 46 can be selectively connected to one of the adjustment holes 451, such as Figure 4 As shown, in order to adjust the clamping degree. In this way, the dust removal bag 6 can be easily installed through the C-shaped clamp 45, and the sealing of the mouth can be better guaranteed.

[0033] A plurality of lower hooks 82 are provided at the lower end of the hanging member 8 , and the upper end of each dust removal bag 6 is hung on one of the lower hooks 82 via a rope.

[0034] Each lift 5 drives the hanging member 8 and a plurality of dust removal bags 6 to move up and down for dust removal via the connecting member 52 .

[0035] Two upper limit switches 42 are installed on the top of each dust removal chamber 4. When the hanging member 8 touches the upper limit switch 42, the corresponding elevator 5 stops driving the hanging member 8 to move upward. A control cabinet can be set next to the dust removal chamber 4. Each upper limit switch 42 is electrically connected to the control cabinet, and the control cabinet can control the operation of each elevator 5 and the displacement distance of the corresponding connecting member 52 respectively.

[0036] A plurality of buffer springs 43 are mounted on the top of each dust removal chamber 4, which are matched with the upper end of the hanging member 8. The contact between the hanging member 8 and the buffer spring 43 can drive the plurality of dust removal bags 6 to shake, so that the dust in the dust removal bag 6 falls into the first ash hopper 7 better, and the dust cleaning effect is better.

[0037] Each of the first ash hoppers 7 is provided with electric vibrators 72 on both sides to facilitate ash dropping.

[0038] One end of the induced draft pipe 1 is arranged on the high titanium slag smelting furnace 10. Specifically, one end of the induced draft pipe 1 is bifurcated into two induced draft branch pipes 11, and one end of the two induced draft branch pipes 11 is respectively arranged on two sets of high titanium slag smelting furnaces 10. One end of each induced draft branch pipe 11 is arranged on the high titanium slag smelting furnace 10 through an induced draft hood 12, and an openable or closable door 13 is provided on the induced draft hood 12; the other end of the induced draft pipe 1 is connected to the internal space of each first ash hopper 7 through seven connecting branch pipes 9. Such a set of dust removal equipment can remove and purify the flue gas generated by the two sets of high titanium slag smelting furnaces 10, further improving work efficiency.

[0039] The other end of the induced draft pipe 1 is arranged horizontally, and a second ash hopper 14 is arranged below each connecting branch pipe 9 at the other end of the induced draft pipe 1. A vertical pipe 15 is connected to the lower end of each second ash hopper 14. A second gate valve 16 is arranged on the vertical pipe 15. The second gate valve 16 is a manual gate valve. In this way, the dust-containing flue gas introduced through the induced draft pipe 1 can first collect some dust through the second ash hopper 14, and then be discharged through the second gate valve 16, thereby reducing the workload of the dust removal bag 6 and further extending the service life of the dust removal bag 6.

[0040] When this embodiment is used, the fan 2 is started, and the dust-containing flue gas generated by the two sets of high-titanium slag smelting furnaces 10 is sucked into the induced draft duct 1. The dust-containing flue gas introduced into the induced draft duct 1 first collects some dust through the second ash hopper 14, and then a part of the dust with larger particles can be discharged through the vertical pipe 15 and the second gate valve 16. Then the flue gas enters the inner space of the seven first ash hoppers 7 respectively through the seven connecting branch pipes 9, and then enters the dust removal bag 6 from the thirty-six through holes 41 on the bottom of each dust removal chamber 4 for filtering and dust removal. After filtering and dust removal, the flue gas is discharged into gas that meets environmental protection requirements through the inner space of each dust removal chamber 4, the suction duct 40, the fan 2 and the exhaust pipe 3.

[0041] When cleaning is required after a period of use, each dust removal chamber 4 can be cleaned independently. Start the elevator 5 above the dust removal chamber 4 that needs cleaning, and drive the hanging parts 8 and thirty-six dust removal bags 6 to move up and down through the elevator 5 and the connecting parts 52. The dust in the dust removal bags 6 is shaken off and enters the first ash hopper 7. Then, the electric vibrators 72 on both sides of the first ash hopper 7 are started to remove the dust. Then, the first gate valve 71 is opened to discharge the dust from the outlet below the first gate valve 71.

[0042] The seven dust removal chambers 4 can realize partial cleaning and partial continuous filtering and purification work, and realize non-stop cleaning operation to meet the non-stop operation of the high-titanium slag smelting furnace 10, reduce energy consumption, and improve cleaning and dust removal efficiency.

[0043] The use of this dust cleaning operation of moving the dust removal bag 6 up and down can effectively increase the service life of the dust removal bag 6.

[0044] Although the present invention has been specifically shown and described in conjunction with the preferred embodiments, it should be understood by those skilled in the art that various changes may be made to the present invention in form and details without departing from the spirit and scope of the present invention as defined by the appended claims, all of which are within the scope of protection of the present invention.

Claims

1. A dust removal system for a high titanium slag smelting furnace, comprising an induced draft duct, a fan, and an exhaust duct, characterized in that: It also includes a plurality of dust removal chambers, a plurality of elevators and a plurality of dust removal bags, each dust removal chamber is provided with a bottom and a top, a first ash hopper is connected to the bottom of each dust removal chamber, a first gate valve is installed near the lower end of the first ash hopper, each elevator is installed on the top of the dust removal chamber through a bracket, and a hanging piece is provided in each dust removal chamber; A plurality of through holes are provided on the bottom of each dust removal chamber, each through hole is connected to the corresponding first ash hopper internal space and the dust removal chamber internal space, the upper periphery of each through hole is sealed and connected to a dust bag mouth, the upper end of each dust bag is suspended on a hanging piece, each elevator is connected to the hanging piece through a connecting piece and can drive the hanging piece and a plurality of dust bags to move up and down for cleaning; One end of the induced draft pipe is arranged on the high titanium slag smelting furnace, and the other end of the induced draft pipe is connected to the inner space of each first ash hopper through a connecting branch pipe; The internal spaces of the dust removal chambers are interconnected, and the internal space of at least one dust removal chamber is connected to the air suction port of the fan through an air suction duct, and the exhaust pipe is connected to the exhaust port of the fan.

2. The dust removal system for a high titanium slag smelting furnace according to claim 1, characterized in that: The lift is an electric hoist, the connecting piece is a chain, and an upper hook is provided in the middle of the upper end of the hanging piece and is connected to the lower end of the connecting piece.

3. The dust removal system for a high titanium slag smelting furnace according to claim 1, characterized in that: A limit and shock absorbing spring is installed between the lower part of each lift and the top of the dust removal chamber, and the connecting piece passes through the middle of the limit and shock absorbing spring.

4. The dust removal system for a high titanium slag smelting furnace according to claim 1, characterized in that: The hanging member is a hanging plate, and a plurality of lower hooks are arranged at the lower end of the hanging member, and the upper end of each dust removal bag is hung on one of the lower hooks through a rope.

5. The dust removal system for a high titanium slag smelting furnace according to claim 4, characterized in that: At least one upper limit switch is arranged on the top of each dust removal chamber, and when the hanging part touches the upper limit switch, the corresponding elevator stops and drives the hanging part to move upward.

6. The dust removal system for a high titanium slag smelting furnace according to claim 4, characterized in that: A plurality of buffer springs matching with the upper ends of the hanging parts are arranged on the top of each dust removal chamber.

7. The dust removal system for a high titanium slag smelting furnace according to claim 1, characterized in that: Vibrators are installed on both sides of each of the first ash hoppers; one end of the induced draft pipe is arranged on the high-titanium slag smelting furnace through an induced draft hood, and the induced draft hood is provided with a door that can be opened or closed.

8. The dust removal system for a high titanium slag smelting furnace according to claim 1, characterized in that: The dust bag is a filter bag made of synthetic fiber, natural fiber or glass fiber; a connecting flange is extended upward from the upper edge of each through hole, the mouth of the dust bag is sleeved on the connecting flange, and a C-shaped clamp clamps the outside of the mouth of the dust bag, and the two ends of the C-shaped clamp are connected by a connecting spring.

9. The dust removal system for a high titanium slag smelting furnace according to claim 1, characterized in that: One end of the induced draft pipe is bifurcated into two induced draft branch pipes, and one end of the two induced draft branch pipes is respectively arranged on two sets of high-titanium slag smelting furnaces.

10. A dust removal system for a high titanium slag smelting furnace according to any one of claims 1 to 9, characterized in that: The other end of the induced draft duct is arranged horizontally, and a second ash hopper is arranged below the other end of the induced draft duct corresponding to each connecting branch pipe, and the lower end of the second ash hopper is connected to a vertical pipe, and a second gate valve is arranged on the vertical pipe.

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