Mechanism for inhibiting carbon deposition of peephole of hydrogen-carbon-rich blast furnace tuyere

Abstract

The utility model belongs to the technical field of tuyere peepholes, and particularly discloses a mechanism for inhibiting carbon deposition of a tuyere peephole of a hydrogen-carbon-rich blast furnace, which comprises a connecting pipe, a valve seat arranged on the connecting pipe, threads arranged at one end of the connecting pipe, a nut in threaded connection with the connecting pipe, and a lantern ring arranged on the inner side of the nut. A glass peeping sheet is placed between the connecting pipe and the lantern ring, a vertical pipe is communicated with the connecting pipe between the nut and the valve seat, a nitrogen pipe is communicated with the vertical pipe, and a valve is arranged on the nitrogen pipe. The problem that the labor intensity of a water watching worker is increased due to the fact that carbon powder blocks a tuyere peephole is solved. According to the utility model, generated carbon deposits are blown into the blast furnace through nitrogen purging, and the carbon deposits are prevented from blocking the peephole, so that the phenomenon that the peephole of the tuyere is frequently blocked by the carbon deposits of the peephole of the tuyere is avoided, and the labor intensity of the peephole of the tuyere is greatly reduced; meanwhile, gas leakage is reduced, so that the risk of gas poisoning caused by inspecting the hydraulic tuyere is reduced.

Description

Technical Field

[0001] This utility model relates to the field of tuyere inspection hole technology, specifically to a mechanism for suppressing carbon buildup in the tuyere inspection hole of a hydrogen-rich carbon blast furnace. Background Technology

[0002] The hydrogen-rich carbon blast furnace replaces the traditional hot blast stove with a brand-new gas-fired heater, changing the tuyeres from hot blast to the injection of hot coke oven gas and decarbonized gas. During normal production, the hydrogen-rich carbon blast furnace injects coke oven gas and decarbonized gas from the tuyeres, which then enter the furnace to participate in chemical reactions with coke, iron ore, and other materials. The self-circulation utilization rate of the hydrogen-rich carbon blast furnace gas reaches approximately 40% or more, with a maximum utilization coefficient of 5.0, resulting in a carbon reduction of approximately 30%.

[0003] A tuyere inspection hole is installed at the rear end of the hydrogen-rich carbon blast furnace air supply device. The main things to observe through the inspection hole are whether the tuyere coal gun head is worn, whether the tuyere coal injection angle is appropriate, whether the tuyere sleeve is worn, whether the tuyere sleeve is damaged, whether there is slag buildup, and whether the tuyere is bright.

[0004] However, the high-temperature coke oven gas and decarbonized gas sent from the gas heater will undergo carbon precipitation reaction during the heating process, producing a large amount of carbon powder. The carbon powder will block the tuyere inspection hole, making it impossible to observe the tuyere's working condition normally. The water watcher needs to clean the ash in time, with the cleaning frequency being every half hour, which increases the labor intensity of the water watcher. Utility Model Content

[0005] The purpose of this invention is to provide a mechanism for suppressing carbon buildup in the tuyere inspection hole of a hydrogen-rich carbon blast furnace, thereby solving the problem that carbon powder clogging the tuyere inspection hole requires timely cleaning by the water inspector, which increases the labor intensity of the water inspector.

[0006] To achieve the above objectives, the basic solution provided by this utility model is as follows: a mechanism for suppressing carbon buildup in the tuyere inspection hole of a hydrogen-rich carbon blast furnace, comprising a connecting pipe, a valve seat on the connecting pipe, a thread on one end of the connecting pipe, a nut threadedly connected to the connecting pipe, a collar on the inner side of the nut, a glass inspection plate placed between the connecting pipe and the collar, a vertical pipe connected to the connecting pipe between the nut and the valve seat, a nitrogen pipe connected to the vertical pipe, and a valve on the nitrogen pipe.

[0007] The working principle of this utility model is as follows: a mechanism for suppressing carbon buildup in the tuyere inspection hole of a hydrogen-rich carbon blast furnace. When the hydrogen-rich carbon blast furnace is running, the operator first opens the valve on the nitrogen pipe, and nitrogen gas enters the connecting pipe through the nitrogen pipe and riser, blowing the generated carbon powder into the blast furnace, thereby suppressing carbon buildup on the inspection hole. When the blast furnace stops running, the nitrogen gas is stopped from entering through the valve on the nitrogen pipe.

[0008] The beneficial effects of this utility model are as follows: ① By blowing the generated carbon deposits into the blast furnace through nitrogen purging, the carbon deposits are prevented from clogging the inspection holes, thereby eliminating the need for water inspectors to frequently deal with carbon deposit blockages and ash removal operations at the tuyere inspection holes, greatly reducing the labor intensity of water inspectors; ② The temperature of the valve seat on the connecting pipe is significantly reduced, preventing the valve seat from overheating and turning red, thus improving safety; ③ The gas leakage during the process of dealing with carbon deposit blockages and ash removal operations at the tuyere inspection holes is reduced, thereby reducing the risk of gas poisoning for water inspectors during tuyere inspections.

[0009] Option 2, which is a preferred option of the basic option, is provided with a spiral guide plate inside the riser; the spiral guide plate can make the nitrogen entering the riser form a spiral airflow, thereby enhancing the flushing effect of nitrogen on the toner.

[0010] Option 3, which is the preferred option of the basic option, is that a pressure gauge is installed on the riser. The pressure gauge can monitor the pressure of nitrogen in the riser in real time, so that the operator can adjust the valve opening according to the pressure, ensuring the safety and stability of the nitrogen purging process, and preventing the dust removal effect or equipment failure due to excessively high or low pressure.

[0011] Option 4, which is a preferred option of the basic option, connects the riser and the nitrogen pipe via a quick connector. The use of quick connectors makes it easier to connect and disconnect the nitrogen pipe from the riser, facilitating the installation, maintenance, and repair of the equipment.

[0012] Option 5, which is a preferred option of the basic option, is a flow regulating valve; the flow regulating valve can more accurately control the flow of nitrogen and meet the diverse needs for cleaning intensity under different working conditions.

[0013] Option 6, a preferred option of the basic option, involves placing a graphite gasket between the glass viewing plate and the collar; the graphite gasket has good sealing performance and high temperature resistance, which can effectively prevent gas and carbon powder from leaking from the gap between the glass viewing plate and the collar, ensuring the sealing of the viewing hole. Attached Figure Description

[0014] Figure 1 This is a perspective view of a mechanism for suppressing carbon buildup in the tuyere inspection hole of a hydrogen-rich carbon blast furnace, according to this utility model.

[0015] Figure 2 This is an exploded view of a mechanism for suppressing carbon buildup in the tuyere inspection hole of a hydrogen-rich carbon blast furnace, according to this utility model.

[0016] Figure 3 This is a cross-sectional view of the vertical pipe in a mechanism for suppressing carbon buildup in the tuyere inspection hole of a hydrogen-rich carbon blast furnace, according to this utility model. Detailed Implementation

[0017] The present invention will be further described in detail below through specific embodiments:

[0018] The reference numerals in the accompanying drawings of the instruction manual include: 1. connecting pipe; 2. valve seat; 3. nut; 4. collar; 5. glass sight glass; 6. riser; 7. nitrogen pipe; 8. valve; 9. spiral guide plate; 10. pressure gauge; 11. graphite gasket.

[0019] like Figures 1 to 3 The diagram shows a mechanism for suppressing carbon buildup in the tuyere inspection hole of a hydrogen-rich carbon blast furnace. It includes a connecting pipe 1, a valve seat 2 on the connecting pipe 1, a threaded end to the connecting pipe 1, a nut 3 threadedly connected to the connecting pipe 1, a collar 4 welded to the inner side of the nut 3, a glass inspection plate 5 placed between the connecting pipe 1 and the collar 4, a graphite pad 11 placed between the glass inspection plate 5 and the collar 4, a handle fixedly connected to the nut 3, a rubber sleeve on the handle, a riser 6 connected to the connecting pipe 1 between the nut 3 and the valve seat 2, a nitrogen pipe 7 connected to the riser 6, and a quick-connect coupling connecting the riser 6 and the nitrogen pipe 7. The nitrogen pipe 7 is equipped with a valve 8, which is a manual flow regulating valve. A spiral guide plate 9 is welded inside the riser 6, and a pressure gauge 10 is installed on the riser 6.

[0020] The implementation method of this embodiment is as follows: When the hydrogen-rich carbon blast furnace is running, the operator first opens the valve 8 on the nitrogen pipe 7. Nitrogen gas flows from the nitrogen pipe 7 through the spiral guide plate 9 inside the riser 6, forming a spiral airflow that enters the connecting pipe 1, blowing the generated carbon powder into the blast furnace, thereby inhibiting carbon buildup on the inspection hole. When the blast furnace stops running, the entry of nitrogen gas is stopped through the valve 8 on the nitrogen pipe 7. During this process, the operator can observe the nitrogen pressure by observing the pressure gauge 10 on the riser 6, and thus dynamically adjust the nitrogen pressure value entering the riser 6 according to the actual situation by adjusting the opening degree of the valve 8.

[0021] When it is necessary to remove the nut 3, graphite gasket 11 and glass sight glass 5 on the connecting pipe 1, close the valve seat 2 before removing them. After the nut 3, graphite gasket 11 and glass sight glass 5 on the connecting pipe 1 are reinstalled, open the valve seat 2.

[0022] The above descriptions are merely embodiments of this utility model, and common knowledge regarding specific structures and characteristics is not elaborated upon here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the structure of this utility model, and these should also be considered within the scope of protection of this utility model. These modifications will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application shall be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A mechanism for inhibiting the deposition of carbon in the tuyere peepholes of a hydrogen-enriched carbon blast furnace, characterized in that, The utility model provides a nitrogen gas filling device for glass bottle, including connecting pipe (1), be equipped with valve seat (2) on connecting pipe (1), one end of connecting pipe (1) is equipped with screw thread, nut (3) is connected on connecting pipe (1), the inside of nut (3) is equipped with collar (4), glass peep piece (5) is placed between connecting pipe (1) and collar (4), the connecting pipe (1) between nut (3) and valve seat (2) is connected with riser (6), riser (6) is connected with nitrogen gas pipe (7), nitrogen gas pipe (7) is equipped with valve (8).

2. A mechanism for inhibiting the deposition of carbon on the sight hole of a hydrogen-rich carbon blast furnace burner according to claim 1, characterized in that, Spiral guide vane (9) is arranged in the riser (6).

3. A mechanism for inhibiting the deposition of carbon on the sight hole of the tuyere of a hydrogen-rich carbon blast furnace according to claim 1, characterized in that, The riser (6) is provided with a pressure gauge (10).

4. A mechanism for inhibiting the deposition of carbon on the sight hole of the tuyere of a hydrogen-rich carbon blast furnace according to claim 1, characterized in that, The riser (6) and the nitrogen gas pipe (7) are communicated through a quick connector.

5. A mechanism for inhibiting the deposition of carbon on the sight hole of the tuyere of a hydrogen-rich carbon blast furnace according to claim 1, characterized in that, The valve (8) is a flow regulating valve.

6. A mechanism for inhibiting the deposition of carbon on the sight hole of a hydrogen-rich carbon blast furnace burner according to claim 1, characterized in that, A graphite pad (11) is placed between the glass peep piece (5) and the collar (4).

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