Blast furnace fuel combustion-supporting device

Abstract

The utility model relates to the technical field of combustion-supporting devices, in particular to a blast furnace fuel combustion-supporting device. According to the technical scheme, the device comprises a bottom plate, a box body and guide pipes, side boxes are fixed to the two sides of the upper end face of the bottom plate, the box body is fixed to the middle of the upper end face of the bottom plate, heating boxes are embedded into the two sides of the interior of the box body and communicate with the interiors of the side boxes through the guide pipes, and heating rods are distributed in the heating boxes in an array mode; a temperature detection sensor is fixed to the upper side of an opening in the inner side of the heating box, pressurizing boxes are fixed to the front side and the rear side of the interior of the box body, exhaust pipes are installed on the front side and the rear side of the upper end face of the box body in a penetrating mode, the lower ends of the exhaust pipes communicate with the corresponding pressurizing boxes, and four foot pads are fixed to the outer side of the lower end face of the bottom plate. The four foot pads are distributed in an array mode, and anti-skid pads are fixed to the lower ends of the foot pads. The device has the advantages of improving air temperature, reducing burnup, improving top pressure, increasing yield and saving coke.

Description

Technical Field

[0001] The utility model relates to the technical field of combustion-supporting devices, in particular to a combustion-supporting device for blast furnace fuel combustion. Background Art

[0002] In the process of exploring the fuel ratio of blast furnace ironmaking, the main technical processes can be summarized into two ways, one is to input more heat, and the other is to control the heat output. As for the way of inputting more heat, it can be achieved in many ways, such as increasing the wind temperature, improving the combustion effect, reducing the blast humidity, etc. These processes can generate a lot of energy.

[0003] In order to improve the above problems and ensure production capacity, the following improvements can be made: increase top pressure, increase production and save coke. High-pressure operation can improve the permeability of the material column, reduce the gas flow rate in the furnace, increase production, reduce the coke ratio, and facilitate stable and smooth furnace operation; by increasing the wind temperature and reducing fuel consumption, the use of high wind temperature can increase the heat compensation after coal injection and make the combustion zone have a higher temperature level. Utility Model Content

[0004] The utility model aims to provide a blast furnace fuel combustion supporting device, which has the advantages of increasing wind temperature, reducing fuel consumption and top pressure, increasing production and saving coke, and solving the problems in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a blast furnace fuel combustion and combustion-supporting device, comprising a base plate, a box body and a conduit, side boxes are fixed on both sides of the upper end surface of the base plate, the box body is fixed in the middle of the upper end surface of the base plate, and heating boxes are embedded and installed on both sides of the interior of the box body, and the heating boxes are connected to the interior of the side boxes through conduits, heating rods are distributed in an array inside the heating box, a temperature detection sensor is fixed on the upper side of the inner opening of the heating box, boosting boxes are fixed on the front and rear sides of the interior of the box body, exhaust pipes are installed through the front and rear sides of the upper end surface of the box body, and the lower end of the exhaust pipe is connected to the corresponding boosting box.

[0006] When using a blast furnace fuel combustion and combustion-supporting device in the technical solution, start the built-in fan of the wind duct to introduce external air into the side box, and then inject the air into the inner side of the heating box through the conduit, and heat the gas by starting the heating rod inside the heating box to form high-temperature hot air. The high-temperature gas is filled into the interior of the box, and the temperature is detected by the built-in temperature detection sensor, and the detection data is displayed on the display screen of the control panel. When the temperature reaches the standard, start the air pump, and inject the hot air into the corresponding boosting box through the three-way valve pipe. Continuous filling increases the internal air pressure. When the specified air pressure is reached, start the ball valve in the three-way valve pipe to switch the passage, so that the air supply passage is switched to another boosting box. When the other boosting box is being pressurized and filled, the corresponding solenoid valve can be started to open the corresponding exhaust pipe, and the boosting box that has been injected and pressurized can be exhausted, and the exhausted high-pressure hot air is filled into the blast furnace for processing. The two boosting boxes switch to supply air in turn to ensure continuous operation.

[0007] Preferably, a foot pad is fixed to the outer side of the lower end surface of the bottom plate, and a total of four foot pads are provided, and the four foot pads are arranged in an array, and an anti-skid pad is fixed to the lower end of the foot pad. The bottom plate is placed and supported by the foot pad, and the anti-skid pad increases friction and ensures support stability.

[0008] Preferably, a control panel is embedded in the front end surface of the heating box, and the control panel is electrically connected to the temperature detection sensor. The detection data of the temperature detection sensor is displayed through a display screen on the control panel.

[0009] Preferably, a wind tube is embedded and installed on the outer side of the side box, and a fan is arranged in the wind tube, and a protective net is arranged at the open end of the wind tube. The fan of the wind tube sucks in the external airflow, and the protective net filters it.

[0010] Preferably, there are two booster boxes, and the two booster boxes are located between the two heating boxes, and the two heating boxes are connected through a three-way valve pipe. The three-way valve pipe is used to switch the passages for hot air to supply the two booster boxes.

[0011] Preferably, an air pump is provided on the upper side of the three-way valve pipe, and the two sides of the air pump are fixed on two booster boxes, and the exhaust port of the air pump is connected to the upper end opening of the three-way valve pipe. The air pump injects hot air into the corresponding booster box through the three-way valve pipe to form high-pressure hot air.

[0012] Preferably, a solenoid valve is provided at the connection between the boost box and the exhaust pipe, and the exhaust pipe passage is opened by the solenoid valve to discharge the high-pressure hot air in the boost box to the outside.

[0013] Compared with the prior art, the beneficial effects of the utility model are as follows: the operator starts the device through an external control device after being powered by an external power supply, starts the built-in blower of the air duct to introduce the outside air into the side box, and then injects the air into the inside of the heating box through the conduit, and heats the gas by starting the heating rod inside the heating box to form high-temperature hot air, and the high-temperature gas fills the inside of the box, and the temperature is detected by the built-in temperature detection sensor, and the detection data is displayed on the display screen of the control panel, and when the temperature reaches the standard, the air pump is started to inject the hot air into the corresponding The inside of the booster box is continuously filled to increase the internal air pressure. When the specified air pressure is reached, the ball valve in the three-way valve tube is started to switch the passage, so that the air supply passage is switched to another booster box. When the other booster box is being pressurized and filled, the corresponding solenoid valve can be started to open the corresponding exhaust pipe, and the booster box that has been injected and pressurized is exhausted. The exhausted high-pressure hot air is filled into the blast furnace for processing. The two booster boxes switch to supply air in turn to ensure continuous operation. The device has a simple structure and is easy to operate. It reduces fuel consumption by supplying hot air to the combustion chamber of the blast furnace. At the same time, it increases production and saves coke by increasing the top pressure. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0015] Figure 2 This is a schematic diagram of the cross-sectional structure of the box body of the utility model;

[0016] Figure 3 This is a schematic diagram of the structure of the heating box of the utility model;

[0017] Figure 4 This is a schematic diagram of the structure of the air pump of the utility model.

[0018] In the figure: 1. side box; 2. bottom plate; 3. heating box; 4. box body; 5. control panel; 6. air duct; 7. foot pad; 8. exhaust pipe; 9. duct; 10. boost box; 11. temperature detection sensor; 12. heating rod; 13. solenoid valve; 14. three-way valve pipe; 15. air pump. DETAILED DESCRIPTION

[0019] 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.

[0020] Embodiment 1

[0021] See also Figures 1 to 4The utility model provides an embodiment: a blast furnace fuel combustion and combustion-supporting device, comprising a base plate 2, a box body 4 and a conduit 9, side boxes 1 are fixed on both sides of the upper end surface of the base plate 2, the box body 4 is fixed in the middle of the upper end surface of the base plate 2, and heating boxes 3 are embedded and installed on both sides of the interior of the box body 4, and the heating box 3 is connected to the interior of the side box 1 through the conduit 9, heating rods 12 are distributed in an array inside the heating box 3, and a temperature detection sensor 11 is fixed on the upper side of the inner opening of the heating box 3.

[0022] Furthermore,

[0023] A foot pad 7 is fixed to the outer side of the lower end surface of the base plate 2. There are four foot pads 7 in total, and the four foot pads 7 are distributed in an array. An anti-skid pad is fixed to the lower end of the foot pad 7. The base plate 2 is placed and supported by the foot pad 7. The anti-skid pad increases friction and ensures the stability of support.

[0024] Furthermore,

[0025] A control panel 5 is embedded in the front end surface of the heating box 3 , and the control panel 5 is electrically connected to the temperature detection sensor 11 , and the detection data of the temperature detection sensor 11 is displayed through the display screen on the control panel 5 .

[0026] Furthermore,

[0027] An air duct 6 is embedded and installed on the outer side of the side box 1, and a fan is arranged inside the air duct 6. A protective net is arranged at the open end of the air duct 6, and the fan of the air duct 6 sucks in external airflow, which is filtered by the protective net.

[0028] Embodiment 2

[0029] See also Figures 1 to 4 The utility model provides an embodiment: a blast furnace fuel combustion supporting device, including a bottom plate 2, a box body 4 and a conduit 9, a booster box 10 is fixed on the front and rear sides of the interior of the box body 4, an exhaust pipe 8 is installed through the front and rear sides of the upper end face of the box body 4, and the lower end of the exhaust pipe 8 is connected to the corresponding booster box 10.

[0030] Furthermore,

[0031] There are two booster boxes 10 in total, and the two booster boxes 10 are located between the two heating boxes 3. The two heating boxes 3 are connected through a three-way valve pipe 14, and the three-way valve pipe 14 switches the passage for hot air to supply the two booster boxes 10.

[0032] Furthermore,

[0033] An air pump 15 is provided on the upper side of the three-way valve tube 14, and both sides of the air pump 15 are fixed on two booster boxes 10. The exhaust port of the air pump 15 is connected to the upper end opening of the three-way valve tube 14. The hot air is injected into the corresponding booster box 10 through the three-way valve tube 14 by the air pump 15 to form high-pressure hot air.

[0034] Furthermore,

[0035] A solenoid valve 13 is provided at the connection between the boost box 10 and the exhaust pipe 8. The solenoid valve 13 opens the passage of the exhaust pipe 8 to discharge the high-pressure hot air in the boost box 10 to the outside.

[0036] During the operation of the utility model, the external power supply is used, and the operator starts the device through the external control device, starts the built-in fan of the air duct 6 to introduce the outside air into the side box 1, and then injects the air into the inside of the heating box 3 through the conduit 9, and heats the gas by starting the heating rod 12 inside the heating box 3 to form high-temperature hot air. The high-temperature gas fills the inside of the box body 4, and the temperature is detected by the built-in temperature detection sensor 11, and the detection data is displayed on the display screen of the control panel 5. When the temperature reaches the standard, the air pump 15 is started. , inject the hot air into the corresponding booster box 10 through the three-way valve tube 14, and continue filling to increase the internal air pressure. When the specified air pressure is reached, start the ball valve switching passage in the three-way valve tube 14 to switch the air supply passage to another booster box 10. When the other booster box 10 is being pressurized and filled, the corresponding solenoid valve 13 can be started to open the corresponding exhaust pipe 8, and the booster box 10 that has been injected and pressed can be exhausted, and the exhausted high-pressure hot air can be filled into the blast furnace for processing. The two booster boxes 10 switch to supply air in turn to ensure continuous operation.

[0037] 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 blast furnace fuel combustion supporting device, comprising a base plate (2), a box (4) and a guide tube (9), characterized in that: Side boxes (1) are fixed on both sides of the upper end surface of the bottom plate (2); the box body (4) is fixed in the middle of the upper end surface of the bottom plate (2); heating boxes (3) are embedded and installed on both sides of the interior of the box body (4); the heating box (3) is connected to the interior of the side box (1) through a conduit (9); heating rods (12) are distributed in an array inside the heating box (3); a temperature detection sensor (11) is fixed on the upper side of the inner opening of the heating box (3); a boost box (10) is fixed on the front and rear sides of the interior of the box body (4); an exhaust pipe (8) is installed through the front and rear sides of the upper end of the box body (4); and the lower end of the exhaust pipe (8) is connected to the corresponding boost box (10).

2. A blast furnace fuel combustion and combustion-supporting device according to claim 1, characterized in that: A foot pad (7) is fixed to the outer side of the lower end surface of the bottom plate (2), and a total of four foot pads (7) are provided, and the four foot pads (7) are distributed in an array, and an anti-slip pad is fixed to the lower end of the foot pad (7).

3. A blast furnace fuel combustion supporting device according to claim 1, characterized in that: A control panel (5) is embedded and installed on the front end surface of the heating box (3), and the control panel (5) is electrically connected to the temperature detection sensor (11).

4. A blast furnace fuel combustion supporting device according to claim 1, characterized in that: A wind tube (6) is embedded and installed on the outer side of the side box (1), and a fan is arranged inside the wind tube (6). A protective net is arranged at the open end of the wind tube (6).

5. A blast furnace fuel combustion and combustion-supporting device according to claim 1, characterized in that: There are two pressurizing boxes (10) in total, and the two pressurizing boxes (10) are located between the two heating boxes (3), and the two heating boxes (3) are connected via a three-way valve pipe (14).

6. A blast furnace fuel combustion supporting device according to claim 5, characterized in that: An air pump (15) is provided on the upper side of the three-way valve tube (14), and both sides of the air pump (15) are fixed on two booster boxes (10), and the exhaust port of the air pump (15) is connected to the upper end opening of the three-way valve tube (14).

7. A blast furnace fuel combustion and combustion-supporting device according to claim 1, characterized in that: A solenoid valve (13) is provided at the connection between the boost box (10) and the exhaust pipe (8).

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