阅读说明：本技术 组合式转炉三次集尘装置及转炉炼钢系统 (Combined converter tertiary dust collecting device and converter steelmaking system ) 是由 徐伟华 张国利 史光 张传波 任乐 于 2019-11-12 设计创作，主要内容包括：本发明提供了一种组合式转炉三次集尘装置及转炉炼钢系统,组合式转炉三次集尘装置包括：集尘罩,用于设置在转炉的上方,集尘罩与除尘组件连接；气幕组件,设置在集尘罩上,气幕组件能够在集尘罩的下方形成气幕墙；挡烟板,设置在集尘罩的下方,挡烟板与气幕墙连接并形成集尘空间。本发明的有益效果是,通过设置气幕组件进行密封,本发明实施例能够在不影响起重机行走的情况下,最大程度阻止烟尘向四周大范围扩散,被限制在桶状集尘空间中的烟尘集中向屋面移动,通过屋顶的集尘罩进入除尘组件内。(The invention provides a combined converter tertiary dust collecting device and a converter steelmaking system, wherein the combined converter tertiary dust collecting device comprises: the dust hood is arranged above the converter and is connected with the dust removal component; the air curtain component is arranged on the dust collecting cover and can form an air curtain wall below the dust collecting cover; and the smoke baffle is arranged below the dust collection cover and is connected with the air curtain wall to form a dust collection space. The dust collection device has the advantages that the air curtain component is arranged for sealing, so that the embodiment of the invention can prevent smoke dust from diffusing to the periphery in a large range to the maximum extent under the condition of not influencing the traveling of the crane, the smoke dust limited in the barrel-shaped dust collection space is concentrated to move to the roof, and the smoke dust enters the dust collection component through the dust collection cover of the roof.)

1. A combined converter tertiary dust collecting device is characterized by comprising:

the dust hood (1) is arranged above the converter (5), and the dust hood (1) is connected with the dust removal component;

the air curtain component is arranged on the dust collection cover (1), and an air curtain wall can be formed below the dust collection cover (1);

and the smoke baffle plate (2) is arranged below the dust collection cover (1), and the smoke baffle plate (2) is connected with the air curtain wall to form a dust collection space.

2. The combined converter tertiary dust collector apparatus of claim 1, wherein the air curtain assembly comprises:

the air curtain device body (9) is fixedly arranged on the dust collection cover (1), and the air curtain device body (9) is provided with a strip-shaped air port facing downwards;

the air curtain device comprises a fan (7) and an air curtain device body (9), wherein the fan (7) is connected with the air curtain device body (9) through an air supply pipeline (8), and the fan (7) can form an air curtain wall through a strip-shaped air opening.

3. The combined type converter tertiary dust collecting device as claimed in claim 2, wherein the two strip-shaped air ports are arranged on two opposite side walls of the air curtain device body (9) at intervals in parallel.

4. The combined type converter tertiary dust collecting device according to claim 3, wherein the number of the fans (7) is two, and each fan (7) is correspondingly communicated with one strip-shaped air port.

5. The combined type converter tertiary dust collection device according to claim 3, wherein the number of the smoke baffle plates (2) is two, the two smoke baffle plates (2) are arranged in parallel at intervals, and the two smoke baffle plates (2) are connected with the air curtain wall to form a cubic dust collection space.

6. The combined converter tertiary dust collector device according to claim 2, wherein the fan (7) is a variable frequency fan.

7. A combined converter tertiary dust collector apparatus according to claim 1, characterized in that the opening size of the dust cage (1) is gradually reduced in a vertically upward direction.

8. A converter steelmaking system including a converter (5) and a combined converter tertiary dust collector, characterised in that the combined converter tertiary dust collector is as claimed in any one of claims 1 to 7.

9. Converter steelmaking system according to claim 8, further comprising a crane (3), said crane (3) being able to pass through said air curtain wall and be placed in a dust collecting space.

10. Converter steelmaking system according to claim 8, characterised in that it comprises a steelworks charging bay and a converter bay, between which the smoke barrier (2) is arranged, and on the opposite side of the converter (5) the smoke barrier (2) is also arranged.

Technical Field

The invention relates to the field of converter dust removal, in particular to a combined converter tertiary dust collecting device and a converter steelmaking system.

Background

At present, with the increasing national environmental protection requirements, more strict emission standards of steelmaking atmosphere pollution are put forward in all places. The converter is used as the most main smelting equipment for steelmaking and is the key of smoke dust treatment in a steelmaking workshop.

The technical level of steel making is continuously improved, the iron adding speed of the converter is continuously accelerated, and particularly when low-quality scrap steel containing hydrocarbon impurities is added, a large amount of paroxysmal smoke is generated and burnt above a converter mouth to cause the rapid rise of the smoke temperature and the volume expansion, so that the smoke collecting capacity of a traditional converter secondary dust collecting cover is weakened, the environmental condition is continuously worsened, and the three-time dust removal treatment technology of the converter in a steel-making workshop is brought forward. Three-time dust removal facilities for domestic practical application are more, but a certain part of the three-time dust removal facilities are serious in smoke dust diffusion and poor in dust collection effect due to the fact that the position of a dust collection cover is higher, and only part of the three-time dust removal facilities can remove paroxysmal flying dust generated during iron adding and steel tapping of a converter, smoke dust in a workshop is still diffused, and the working environment is not optimistic. In order to realize efficient dust removal, a new method and a new idea are urgently needed, so that a combined converter tertiary dust collecting device is provided to solve the problem of diffusion of smoke dust in a steelmaking workshop.

Disclosure of Invention

The invention provides a combined converter tertiary dust collecting device and a converter steelmaking system, which aim to remove dust on the premise of not influencing the movement of a crane.

The technical scheme adopted by the invention for solving the technical problems is as follows: a combined converter tertiary dust collecting device comprises: the dust hood is arranged above the converter and is connected with the dust removal component; the air curtain component is arranged on the dust collecting cover and can form an air curtain wall below the dust collecting cover; and the smoke baffle is arranged below the dust collection cover and is connected with the air curtain wall to form a dust collection space.

Further, the air curtain assembly includes: the air curtain device body is fixedly arranged on the dust collecting cover and is provided with a strip-shaped air port facing downwards; the fan is connected with the air curtain device body through the air supply pipeline, and the fan can form an air curtain wall through the strip-shaped air opening.

Further, the two strip-shaped air ports are arranged on two opposite side walls of the air curtain device body at intervals in parallel.

Further, the number of the fans is two, and each fan is correspondingly communicated with one strip-shaped air port.

Furthermore, the number of the smoke baffle plates is two, the two smoke baffle plates are arranged in parallel at intervals, and the two smoke baffle plates are connected with the air curtain wall to form a cubic dust collecting space.

Further, the fan is the frequency conversion fan.

Further, the opening size of the dust cage is gradually reduced in the vertically upward direction.

The invention also provides a converter steelmaking system which comprises a converter and the combined converter tertiary dust collecting device.

Further, the converter steelmaking system also comprises a crane, and the crane can penetrate through the air curtain wall and is arranged in the barrel-shaped dust collecting space.

Further, the converter steelmaking system comprises a steelmaking workshop feeding span and a converter span, wherein a smoke baffle is arranged between the steelmaking workshop feeding span and the converter span, and the smoke baffle is also arranged on the opposite side of the converter.

The dust collection device has the advantages that the air curtain component is arranged for sealing, so that the embodiment of the invention can prevent smoke dust from diffusing to the periphery in a large range to the maximum extent under the condition of not influencing the traveling of the crane, the smoke dust limited in the barrel-shaped dust collection space is concentrated to move to the roof, and the smoke dust enters the dust collection component through the dust collection cover of the roof.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:

FIG. 1 is a schematic view of a converter according to an embodiment of the present invention;

fig. 2 is a schematic view of an assembly structure of the dust hood and the air curtain assembly.

Reference numbers in the figures: 1. a dust collection cover; 2. a smoke baffle; 3. a crane; 4. a ladle; 5. a converter; 6. a dust removal pipeline; 7. a fan; 8. an air supply duct; 9. an air curtain device body.

Detailed Description

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.

As shown in fig. 1 and 2, the embodiment of the present invention provides a combined converter tertiary dust collecting device, which comprises a dust hood 1, an air curtain assembly and a smoke baffle 2. The dust hood 1 is arranged above the converter 5, and the dust hood 1 is connected with the dust removal component through a dust removal pipeline 6. The air curtain component is arranged on the dust hood 1 and can form an air curtain wall below the dust hood 1. And the smoke baffle 2 is arranged below the dust hood 1, and the smoke baffle 2 is connected with the air curtain wall to form a barrel-shaped dust collecting space.

By arranging the air curtain component for sealing, the embodiment of the invention can prevent smoke dust from diffusing to the periphery in a large range to the maximum extent under the condition of not influencing the traveling of the crane, and the smoke dust limited in the barrel-shaped dust collecting space is concentrated to move to the roof and enters the dust removing component through the dust collecting cover 1 on the roof.

The air curtain assembly includes an air curtain device body 9 and a fan 7. The air curtain device body 9 is fixedly arranged on the dust collection cover 1, and the air curtain device body 9 is provided with a strip-shaped air port facing downwards. The fan 7 is connected with the air curtain device body 9 through the air supply pipeline 8, and the fan 7 can form an air curtain wall through the strip-shaped air opening.

The fan 7 can form a stable and dense air curtain wall through the strip-shaped air port, thereby avoiding the transverse movement of rising smoke dust and ensuring the stability of a barrel-shaped dust collecting space.

It should be noted that, in the embodiment of the present invention, two strip-shaped air ports are arranged in parallel and at an interval on two opposite side walls of the air curtain device body 9. The number of the fans 7 is two, and each fan 7 is communicated with one strip-shaped air port correspondingly. The two smoke baffles 2 are arranged in parallel at intervals, and the two smoke baffles 2 are connected with the air curtain wall to form a cubic dust collecting space.

The two smoke baffles 2 are correspondingly connected with the two air curtain walls which are arranged in parallel at intervals to form a cubic dust collecting space, the cylindrical dust collecting space is the simplest dust collecting space form, effective plugging can be formed around the converter, smoke and dust can be discharged through the direction of the dust collecting cover 1 as far as possible, and the situation that the smoke and dust overflows to the outside in a workshop is avoided.

Preferably, the dust collecting space may have a triangular prism structure, the air curtain wall formed by the air curtain assembly arranged obliquely on the plane is two connected vertical side walls of the triangular prism, and the smoke baffle 2 on the converter side is the other vertical side wall of the triangular prism.

The air curtain wall can also be arc-shaped, namely, the air curtain wall forms a cylindrical dust collecting space with an opening in the vertical direction, and the smoke baffle 2 is arranged at the opening and closes the cylindrical dust collecting space.

Of course, the combination of the air curtain wall and the smoke barrier 2 may have other forms, which are not listed here, and any dust collecting space form that can form a closed structure and allow a crane to be placed therein is within the scope of the present invention.

In the embodiment of the invention, the fan 7 is a variable frequency fan. By adopting frequency conversion control, the flow speed and the flow of the high-speed airflow can be adjusted according to the actual process production condition, the flexible use of facilities is realized, and the operation cost is saved. Meanwhile, the size of the strip-shaped air port can be calculated through the pressure head of the model selection fan 7, and certain air speed and air curtain length are ensured. In the embodiment of the invention, the fan 7 is connected with the air source system and the control system, and can send the air of the air source system to the strip-shaped air port to form an air curtain wall.

As shown in fig. 1, in the embodiment of the present invention, the opening size of the dust cage 1 is gradually reduced in a vertically upward direction. The dust collection cover 1 is set to be a structure with a large lower part and a small upper part, so that dust can be better collected, and meanwhile, the cost can be saved. It should be noted that the dust collecting cover 1 should be made as low as possible to collect the smoke to the maximum extent without affecting the traveling of the crane 3 and leaving a safe distance.

The dust hood 1 is connected with the dust removal component through the dust removal pipeline 6, and when the dust hood works, as the dust collection is carried out in the form of a barrel-shaped dust collection space, the air volume of the dust hood 1 can be reduced, the same or better dust collection effect as that in the prior art can be achieved, and the energy consumption cost can be effectively reduced.

The invention also provides a converter steelmaking system which comprises the converter 5 and the combined converter tertiary dust collecting device. The combined converter tertiary dust collecting device is arranged right above the converter 5 and does not influence the normal work of the crane 3 and the ladle 4.

Preferably, the crane 3 in this embodiment is capable of passing through the air curtain wall and placing in the bucket-shaped dust collecting space. In the embodiment shown in fig. 1, the running direction of the crane 3 is in a direction perpendicular to the paper plane, and the air curtain wall is perpendicular to the running direction of the crane 3, i.e. parallel to the paper plane. The crane 3 can pass through the air curtain wall during operation and cannot cause interference phenomenon.

As shown in fig. 1, the converter steelmaking system includes a steelmaking workshop charging bay (the left side of the converter in fig. 1 includes the area where the converter is located) and a converter bay (the right side of the converter in fig. 1), a smoke barrier 2 is arranged between the steelmaking workshop charging bay and the converter bay, the smoke barrier 2 should be sealed to the roof by a beam of a crane 3 to achieve the actually required sealing effect, and the dust cage 1 should be connected with the smoke barrier 2 in a sealing manner to prevent smoke from escaping from the gap between the two.

Meanwhile, as shown in fig. 1, a smoke barrier 2 is also provided on the opposite side of the converter 5 (the left side of the converter shown in fig. 1). The smoke barrier 2 should also be sealed from the beam of the crane 3 to the roof to achieve the desired sealing effect, and the dust hood 1 should be connected to the smoke barrier 2 in a sealing manner to prevent smoke from escaping through the gap between the two.

When the embodiment of the invention is put into use, firstly, the dust removal device connected with the roof dust removal pipeline 6 is started, meanwhile, the air source system and the control system required by the air curtain device body 9 are started, and the high-pressure air feeder 7 is started to feed air to the strip-shaped air port to form the air curtain wall. In the stage of rising of smoke dust generated by adding iron or adding scrap steel in the converter, the smoke dust is blocked by the gas curtain wall, so that the smoke dust is effectively sealed, and the smoke dust can only rise to the dust collection cover 1 and enter the dust collection assembly through the dust collection pipeline 6 arranged on the roof, thereby well treating the smoke dust in a steelmaking workshop and greatly improving the working environment of a post.

From the above description, it can be seen that the above-described embodiments of the present invention achieve the following technical effects:

the smoke and dust is collected with high efficiency, and the working environment of the workshop is greatly improved.

The discharge amount of factory pollutants is reduced, the pollution to the atmosphere is reduced, and the practical significance on the improvement of the surrounding environment is realized; and the development concept of consistent innovation, coordination, greenness, openness and sharing in the country and the society is followed, and the method has great significance for realizing the sustainable development of the whole society and promoting the ecological civilization construction.

The above description is only exemplary of the invention and should not be taken as limiting the scope of the invention, so that the invention is intended to cover all modifications and equivalents of the embodiments described herein. In addition, the technical features, the technical schemes and the technical schemes can be freely combined and used.