CN216780313U

CN216780313U - Ladle argon blowing station

Info

Publication number: CN216780313U
Application number: CN202123244079.7U
Authority: CN
Inventors: 袁晓峰
Original assignee: Wisdri Engineering and Research Incorporation Ltd
Current assignee: Wisdri Engineering and Research Incorporation Ltd
Priority date: 2021-12-22
Filing date: 2021-12-22
Publication date: 2022-06-21
Anticipated expiration: 2031-12-22

Abstract

The utility model provides a ladle argon blowing station, which comprises: a ladle; a dust cage disposed above the ladle; the annular pipe is arranged on the dust collection cover and positioned on the inner side of the dust collection cover; the air source supply pipeline is communicated with the annular pipe; a water source supply pipeline communicated with the annular pipe; a plurality of atomizing nozzles in communication with the annular tube; wherein the annular tube is distributed around the center line of the ladle, and the atomizing nozzles are distributed around the center line of the ladle. The ladle argon blowing station provided by the utility model can prevent hot flue gas from escaping from a gap between the dust hood and the atomizing nozzle, can improve the effect of isolating the hot flue gas by the annular gas curtain formed by the spray sprayed by the atomizing nozzle, and improves the workshop environment.

Description

Ladle argon blowing station

Technical Field

The utility model relates to the technical field of steel making, in particular to a ladle argon blowing station.

Background

The argon blowing of the ladle is an important means for external refining of molten steel. The molten steel has uniform components and uniform temperature by blowing gas with a certain flow rate from the bottom of the ladle. And the bubbles can promote inclusions in the steel to float upwards, so that the purification of the quality of the molten steel is facilitated. During the production process, a large amount of smoke is generated in the ladle argon blowing station during the technological operations of ladle argon blowing stirring, blanking and the like, and the smoke components are mainly ferric oxide powder and the like. However, the dust removal system of the existing ladle argon blowing station has limited suction capacity, and a large amount of hot flue gas is easily dispersed in a workshop, so that the working environment at the ladle argon blowing station is worsened, and the production safety and the personnel health are seriously threatened.

At present, the common solution is to improve the effective collection rate of smoke dust through reasonable matching of the air volume of a fan of a dust removal system of a ladle argon blowing station and optimized design of a dust collection cover of the dust removal system of the ladle argon blowing station. However, the methods have the defects that a dust removal system of the ladle argon blowing station needs to be greatly modified, the primary investment amount is high, the modification period is long, and the influence on the existing production is large.

Therefore, there is a need to provide a new ladle argon blowing station to efficiently and economically improve the problem of hot flue gas emissions from the ladle argon blowing station.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a ladle argon blowing station, which aims to efficiently and economically improve the problem of hot smoke dissipation of the ladle argon blowing station.

In order to solve the technical problem, the utility model provides a ladle argon blowing station, which comprises: a ladle; a dust cage disposed above the ladle; the annular pipe is arranged on the dust collection cover and positioned on the inner side of the dust collection cover; the air source supply pipeline is communicated with the annular pipe; a water source supply line in communication with the annular tube; a plurality of atomizing nozzles in communication with the annular tube; wherein the annular tube is distributed around the center line of the ladle, and the atomizing nozzles are distributed around the center line of the ladle.

Optionally, the atomizing nozzles are uniformly distributed around the center line of the ladle.

Optionally, the atomizing nozzle further comprises a connecting pipe, one end of the connecting pipe is communicated with the annular pipe, and the other end of the connecting pipe is communicated with the atomizing nozzle.

Optionally, the connecting pipe coincides with a central axis of the atomizing nozzle.

Optionally, the opening at the upper end of the steel ladle is circular, and the annular tube is circular.

Optionally, the annular tube is disposed above the opening at the upper end of the ladle and surrounds the opening at the upper end of the ladle.

Optionally, the air source supply pipeline and the water source supply pipeline are respectively provided with a pressure regulating valve, so as to respectively regulate the pressure of the air source supply pipeline and the pressure of the water source supply pipeline.

The ladle argon blowing station provided by the utility model has the following beneficial effects:

because the dust collecting cover is arranged above the steel ladle, the annular pipe is arranged on the dust collecting cover and is positioned on the inner side of the dust collecting cover, the plurality of atomizing nozzles are arranged on the annular pipe and are communicated with the annular pipe, the annular pipe surrounds the central line of the steel ladle and is distributed, and the atomizing nozzles surround the central line of the steel ladle, the annular air curtain part formed by spraying and spraying through the atomizing nozzles can isolate dissipated hot smoke, and the hot smoke is prevented from dissipating from a gap between the dust collecting cover and the steel ladle, thereby improving the workshop environment. Because the annular pipe is located the dust cage inboard, a plurality of atomizing nozzle with the annular pipe intercommunication, consequently the annular gas curtain that the atomizing nozzle sprays the spraying and forms can prevent that hot flue gas from follow the dust cage with clearance loss between the atomizing nozzle can further improve the effect of the isolated hot flue gas of annular gas curtain that the spraying that the atomizing nozzle sprays formed, improve workshop environment.

Meanwhile, the spray sprayed by the atomizing nozzle contains a large amount of water particles with small particle size, high speed and large kinetic energy, when the water particles are contacted with hot flue gas, the water particles firstly absorb the sensible heat of the hot flue gas to cool the hot flue gas to below the dewing temperature, then collide, adhere and grow with dust particles in the flue gas, and when the particle diameters grow to a certain degree, the particles can be separated from the hot flue gas under the action of gravity and settle on the ground, so that the effects of cooling, purifying and trapping the flue gas are achieved, and the flue gas trapping efficiency and the flue gas purifying effect are improved.

In addition, the air curtain formed by spraying can realize short-time rapid cooling of hot smoke and large volume contraction, thereby reducing the air quantity of the dust hood and reducing the operation energy consumption cost of the dust removal system. Because the atomizing nozzle is adopted for spraying, atomized water particles are completely gasified after contacting with hot flue gas, and potential danger of explosion caused by mechanical water is avoided.

The annular pipe is arranged on the dust collecting cover above the steel ladle, the annular pipe is arranged on the inner side of the dust collecting cover, the atomizing nozzle is arranged on the annular pipe and surrounds the annular pipe on the central line of the steel ladle, the atomizing nozzle surrounds the central line of the steel ladle and is distributed, the atomizing nozzle can spray mist right above the steel ladle to form an annular air curtain so as to avoid the loss of hot flue gas, meanwhile, the hot flue gas is cooled and purified, the surrounding environment of a workshop is improved, and therefore, the dust removing effect of the argon blowing station for the steel ladle can be improved economically and efficiently.

Drawings

FIG. 1 is a schematic structural view of a ladle argon blowing station in an embodiment of the present invention;

fig. 2 is a partially enlarged schematic view of a ladle argon blowing station in the embodiment of the present invention.

Description of reference numerals:

100-steel ladle;

200-a dust cage;

310-a ring-shaped tube; 320-an atomizing nozzle; 330-connecting tube.

Detailed Description

The ladle argon blowing station provided by the utility model is further explained in detail by combining the attached drawings and the specific embodiment. The advantages and features of the present invention will become more apparent from the following description. It is to be noted that the drawings are in a very simplified form and are not to precise scale, which is merely for the purpose of facilitating and distinctly claiming the embodiments of the present invention.

Referring to fig. 1 and 2, fig. 1 is a schematic structural view of a ladle argon blowing station in an embodiment of the present invention, and fig. 2 is a partially enlarged schematic view of the ladle argon blowing station in the embodiment of the present invention, and the embodiment provides a ladle argon blowing station including: a ladle 100; a dust cage 200 disposed above the ladle; an annular tube 310 arranged on the dust collection cover 200 and positioned at the inner side of the dust collection cover 200; a gas source supply line in communication with the annular tube 310; a water source supply line communicating with the ring pipe 310; a plurality of atomizing nozzles 320 provided on the annular pipe 310 and communicating with the annular pipe 310; wherein the annular tube 310 is distributed around a center line of the ladle 100, and the atomizing nozzle 320 is distributed around the center line of the ladle 100. Since the dust cage 200 is disposed above the ladle, the annular tube 310 is disposed on the dust cage 200, the annular tube 310 is disposed inside the dust cage 200, the plurality of atomizing nozzles 320 are disposed on the annular tube 310, the plurality of atomizing nozzles 320 are communicated with the annular tube 310, the annular tube 310 is distributed around the center line of the ladle 100, and the atomizing nozzles 320 are distributed around the center line of the ladle 100, an annular air curtain portion formed by spraying mist through the atomizing nozzles 320 isolates escaping hot flue gas, prevents the hot flue gas from escaping from a gap between the dust cage 200 and the ladle 100, and thus improves a workshop environment. Because the annular tube 310 is positioned at the inner side of the dust hood 200, and the plurality of atomizing nozzles 320 are communicated with the annular tube 310, the annular air curtain formed by spraying of the atomizing nozzles 320 can prevent hot flue gas from escaping from a gap between the dust hood 200 and the atomizing nozzles 320, the effect of isolating the hot flue gas by the annular air curtain formed by spraying of the atomizing nozzles 320 can be further improved, and the workshop environment is improved. Meanwhile, the spray sprayed by the atomizing nozzle 320 contains a large amount of water particles with small particle size, high speed and large kinetic energy, when the water particles are contacted with hot flue gas, the water particles firstly absorb the sensible heat of the hot flue gas to cool the hot flue gas to below the dewing temperature, then collide, adhere and grow with dust particles in the flue gas, and when the particle diameters grow to a certain degree, the particles are separated from the hot flue gas under the action of gravity and settle on the ground, so that the effects of cooling, purifying and trapping the flue gas are achieved, and the flue gas trapping efficiency and the flue gas purifying effect are improved. In addition, the air curtain formed by spraying can realize short-time rapid cooling of hot smoke and large volume contraction, thereby reducing the air quantity of the dust hood 200 and lowering the energy consumption cost of the operation of a dust removal system. Because the atomizing nozzle 320 is used for spraying, atomized water particles are completely gasified after contacting with hot smoke, and potential danger of explosion caused by mechanical water is avoided. The annular pipe is arranged on the dust collection cover 200 above the steel ladle, the annular pipe 310 is arranged on the inner side of the dust collection cover 200, the atomizing nozzle 320 is arranged on the annular pipe 310, the annular pipe 310 is distributed around the central line of the steel ladle 100, the atomizing nozzle 320 can spray mist right above the steel ladle 100 to form an annular air curtain, so that the heat smoke is prevented from escaping, the heat smoke is cooled and purified, the surrounding environment of a workshop is improved, and therefore the dust removal effect of the steel ladle argon blowing station can be improved economically and efficiently.

The atomizing nozzles 320 are uniformly distributed around the centerline of the ladle 100.

The total number of the atomizing nozzles 320 is 36, and the distance between every two adjacent atomizing nozzles 320 is 0.3-0.4 m.

The ladle argon blowing station further comprises a connecting pipe 330, one end of the connecting pipe 330 is communicated with the annular pipe 310, and the other end of the connecting pipe 330 is communicated with the atomizing nozzle 320. The connection pipe 330 may be a straight pipe or an elbow pipe.

In order to make the sprayed spray more uniform, in a preferred embodiment of the present invention, the connecting pipe 330 is coincident with the central axis of the atomizing nozzle 320.

In this embodiment, the atomizing nozzle 320 sprays the mist from top to bottom.

The opening of the upper end of the ladle 100 is circular, and the annular tube 310 is circular.

The annular pipe 310 is disposed above the upper opening of the ladle 100 and surrounds the upper opening of the ladle 100.

And the air source supply pipeline and the water source supply pipeline are respectively provided with a pressure regulating valve so as to be used for respectively regulating the pressure of the air source supply pipeline and the water source supply pipeline.

The pressure of compressed air in the air source supply pipeline is 0.4-0.6 MPa, and the pressure of water in the water source supply pipeline is 0.4-0.6 MPa. The grain diameter of the atomized water particles sprayed by the atomizing nozzle 320 is less than or equal to 40 mu m.

The above description is only for the purpose of describing the preferred embodiments of the present invention, and is not intended to limit the scope of the present invention, and any variations and modifications made by those skilled in the art based on the above disclosure are within the scope of the appended claims.

Claims

1. A ladle argon blowing station is characterized by comprising:

a ladle;

a dust cage disposed above the ladle;

the annular pipe is arranged on the dust collection cover and positioned on the inner side of the dust collection cover;

the air source supply pipeline is communicated with the annular pipe;

a water source supply line in communication with the annular tube;

a plurality of atomizing nozzles in communication with the annular tube;

wherein the annular tube is distributed around the center line of the ladle, and the atomizing nozzles are distributed around the center line of the ladle.

2. The ladle argon station of claim 1, wherein the atomizing nozzles are evenly distributed about the ladle centerline.

3. The ladle argon blowing station according to claim 1, further comprising a connection pipe, one end of which communicates with the annular pipe and the other end of which communicates with the atomizing nozzle.

4. The ladle argon blowing station of claim 3, wherein the connecting tube coincides with a central axis of the atomizing nozzle.

5. The ladle argon blowing station according to claim 1, wherein the ladle upper end opening is circular and the annular tube is circular.

6. The ladle argon blowing station of claim 5, wherein the annular tube is disposed above and around the ladle upper end opening.

7. The ladle argon blowing station as defined in claim 1, wherein the gas source supply line and the water source supply line are respectively provided with a pressure regulating valve for respectively regulating the pressure of the gas source supply line and the water source supply line.